JP5119648B2 - Slitter - Google Patents

Description

  The present invention relates to a slitter that cuts a printed sheet into a predetermined dimension at a cutting mark position, and more particularly to a media tilting device that can correct this state when a printed image is tilted with respect to the sheet.

As is well known, a large number of printed sheets (media sheets) after printing are usually stacked so that the register marks on each sheet coincide with each other, and are usually cut to a predetermined size by a guillotine cutting machine. is there.
By the way, with recent progress in demand for printing sheets, printing and cutting of one to several large sheets are increasing. However, such large sheets have a large size. Since it takes too much time and money to process with a cutter, a printed sheet is placed on a large table and manually cut to a predetermined size using a cutter knife or the like.

  However, the manual cutting operation not only requires skill, but also has to process dozens of large-sized sheets of the same size. Work was sometimes required.

Conventionally, there has been proposed a slitter that uses a plurality of rotary cutters to cut a printed sheet after printing into a predetermined size.
Japanese Patent Laid-Open No. 10-76495 JP 2002-346984 A JP 2004-237377 A

Since none of these slitters has a predetermined position of the rotary cutter, it cannot be applied to a printing sheet having different cutting dimensions, and the slitter must be designed for each cutting dimension. Is based on the premise that the cutting mark position is accurately printed with respect to the cut edge of the print sheet. The image was tilted with respect to the sheet.
In particular, in the large format printing sheet, even if the image is slightly inclined with respect to the cutting edge of the printing sheet, there is a problem that the influence of the inclination appears greatly in the cutting result.

  The object of the present invention is to take into account the above-mentioned problems with cutting of a conventional media sheet. Even when the image is printed with an inclination relative to the media sheet, the inclined cutting is performed. There is a slitting media tilting device that will never be missed.

In order to achieve this object, the present invention is provided with a releasable feed roller having a large surface area on which a large-sized media sheet to be processed can be placed and feeding the media sheet in the length direction. and cutting table, a transparent scale extending in the width direction having a width extension scale can be visually recognized cut mark position in the width direction of the provided and and the media sheet on the table, corresponding to the width direction extending graduation of the transparent scale And a camera scale provided on the table in parallel with the transparent scale, and can be manually adjusted along the camera scale and read through the transparent scale. At least two supervisions positioned at the corresponding scale positions of the camera scale corresponding to the cut mark position scale values. The camera is disposed on the media sheet taking side of the table so that it can be tilted about the vertical center axis of the apparatus fixing unit, and the media sheet can be temporarily clamped when the feed roller is released and from the monitoring camera. A media sheet tilting table that adjusts the tilt of the clamped media sheet with respect to the table in accordance with a cut mark position signal in the length direction, and a media sheet that is disposed behind the feed roller and has been tilt-adjusted from the feed roller. A top and bottom cutter that receives and cuts the cutting mark position, and is positioned so as to be movable in the width direction of the table and moved to a position in the width direction in response to a cutting mark position signal in the width direction from the monitoring camera and immediately after the top and bottom cutter Take the media sheet from the secondary feed roller and length at the cut mark position A slitter unit having at least two slitter units with a built-in rotary cutter for cutting a media sheet in a direction, wherein the media tilting table is biased upward by a push-up spring and between the upper surface of the media tilting table A clamp plate that can temporarily clamp the media sheet is provided, and this clamp plate is forcibly lowered via a vertical movement member that is operated up and down by an operating means and a pusher that is biased downward by a strong pressing spring. We propose a slitting media tilting device.

  According to the present invention, since the slitter unit is adjusted to the position corresponding to the cutting mark by the signal of the mark position detector for detecting the cutting mark, an arbitrary cutting size can be obtained, and the image is inclined and printed with respect to the media sheet. In such a case, since the inclination of the media sheet is adjusted in advance according to the inclination between the cutting marks, an accurate cutting result without the inclination of the image can be obtained even with a large sheet.

In the description of the preferred embodiments of the invention described below,
1)
The media tilting table is fixed to the corresponding end of the media tilting table and is followed by the nut fixing plate which is reciprocated by a feed screw of a reversible tilting motor provided at one end of the media tilting table. The slitting media tilting device according to claim 1, wherein the tilting media tilting device is tilted by the holding member.
2)
The slitting media tilting device according to any one of claims 1 and 2, wherein the central axis is provided at a central position in the media sheet width direction of the media tilting base. The

The details of the slitter according to the embodiment of the present invention will be described below with reference to the drawings.
FIG. 2 is an overall cross-sectional view of the slitter of the present invention, and the slitter includes a table T on which a print sheet, that is, a media sheet S is supplied in the length direction (left-right direction in FIG. 2).

In the upper part of the table T, a transparent scale S1 through which the positions of registration marks M1, M2 (cutting marks, shown in FIG. 4) printed on the surface of the media sheet S can be seen through extends in the width direction of the media sheet S. The operator can know the positions of the registration marks M1, M2 of the media sheet S set from the scale of the same transparent scale S1 corresponding to the registration marks M1, M2.
The table T is provided with a releasable feed roller F1 positioned immediately after the transparent scale S1, and the lower roller 1a of the feed roller F1 is driven at a constant speed by the sheet feed motor 1.

  The upper roller 1b of the feed roller F1 can be separated and released from the lower roller 1a by operating a release lever 2 that is manually operated by an operator. That is, the release lever 2 that can be tilted about the fulcrum pin 3 (FIG. 2) of the apparatus fixing portion has the media sheet S sandwiched between the lower roller 1a and the upper roller 1b when in the release position indicated by the solid line. When the manual operation is performed at the release position indicated by the two-dot chain line, the upper roller 1b is separated from the lower roller 1a, and the restriction of the media sheet S can be released.

The first sheet sensor 4 adjacent to the feed roller F1 senses the leading edge of the media sheet S and notifies whether there is an abnormality in sheet feeding.
A camera scale S2 (standard scale) placed in parallel with the transparent scale S1 is positioned on the table T, and a mark position detector showing the case of the monitoring cameras P1 and P2 using the scale of the camera scale S2. Can be positioned at the position of the corresponding register mark M1, M2. That is, the two surveillance cameras P1 and P2 are fixed to the lower part of the camera base 21 that can move along the guide rail 5 extending in a direction perpendicular to the paper surface of FIG. Towards.

Therefore, the operator grasps the knob 21a of the camera base 21 and the operator sets the standard line of the camera base 21 on the corresponding scale of the camera scale S2 corresponding to the position of the registration marks M1 and M2 read on the scale of the transparent scale S1 (FIG. 3). , The corresponding register marks M1 and M2 can be standardized in the field of view of the surveillance cameras P1 and P2. The length direction deviation information and the width direction deviation information of the registration marks M1, M2 from the monitoring cameras P1, P2 are stored in the memory of the control device cpu of FIG. And a tilt motor 31 (shown in FIG. 10), which will be described later, is driven.

  In the illustrated embodiment, the camera base 21 is manually operated. However, the camera base 21 is driven by a stepping motor, and the position information of the register marks M1 and M2 read by the transparent scale S1 is input key 98 (FIG. 10). The camera base 21 can be moved by a stepping motor by a value corresponding to the input signal, and the monitoring cameras P1, P2 can be aimed at the positions of the corresponding register marks M1, M2.

A media tilting base 30 for adjusting the tilt of the media sheet S by temporarily clamping the media sheet S to be handled is disposed at the media sheet receiving end of the table T.
The media tilting table 30 shown in detail in FIGS. 5 to 9 can be tilted in a horizontal plane by a tilting motor 31 that can be reversed about a rotation shaft 32 at the center in the width direction of the media sheet S. The clamp plate 34 urged upward by the push-up spring 33 is provided.

A tilting motor 31 that can be rotated forward and backward is provided at one end of the media tilting table 30, and a pair of main driving plates 41 a, a nut fixing plate 41 that is reciprocated by a feed screw 39 of the tilting motor 31. 41b is raised. The bearing 43 positioned between the main moving plates 41a and 41b is rotatably supported by a shaft 45 of a holding member 44 that is fixed to the end surface of the media tilting base 30 in a cantilever state.
Therefore, when the tilt motor 31 is rotated by the number of rotations corresponding to the length direction deviation information of the registration marks M1 and M2 according to a command from the control device cpu, the media tilt base 30 is rotated by the rotation shaft 32 while the media sheet S is clamped. And the inclination of the image of the media sheet S with respect to the table T is corrected.

That is, as shown in FIGS. 5 and 7, one end of the clamp plate 34 is pin-attached to the pins 47 of the support brackets 30 a and 30 b that are fixed to the media tilting base 30 in an opposed state in the width direction. A pair of toggle links 48a and 48b are provided, and a vertical movement member 36 extending in the horizontal direction is supported by these toggle links 48a and 48b so as to be movable up and down.

A pair of pushers 37 pressed downward by a strong pressing spring 48 are supported at the intermediate portion of the vertical movement member 36 so as to be movable up and down, and the clamp plate 34 is forcibly lowered and supplied by the lowering of these pushers 37. The media sheet S is pressed and clamped to the surface of the media tilting table 30.

A clamp lever 35 whose base is rotatably supported by a mounting pin 51 is attached to the one support bracket 30 b, and a joint pin 52 at an intermediate portion of the clamp lever 35 is coupled to one end of a connecting link 49. The other end of the connection link 49 is connected to a connection pin 49a that connects the toggle links 48a and 48b and the vertical movement member 36.
Accordingly, the vertical movement member 36 and the pusher 37 are forcibly lowered by the rotation of the clamp lever 35 shown in FIG. 6 in the direction of the arrow, and the media sheet S to which the clamp plate 34 that comes into contact with these pushers 37 is supplied is tilted to the media 30. Press and clamp to the surface of.

Returning to FIG. 2, the top and bottom cutters C positioned substantially immediately below the guide rails 5 are arranged on the table T, and the registration marks M <b> 1 are aligned by the top and bottom cutters C extending in the width direction of the table T. , M2 is cut by the same ground cutter C. The top and bottom cutter C is operated at a timing corresponding to the distance between the registration marks M1 and M2 in the length direction of the media sheet S inputted in advance from the input key 7, and cuts the media sheet S at the positions of the trailing registration marks M1 and M2. To do.

A secondary feed roller F2 for picking up the media sheet S cut from the position of the register marks M1 and M2 is disposed on the table T immediately after the top and bottom cutter C, and the surface is flattened by the rotational feed movement of these secondary feed rollers F2. While maintaining the state, the media sheet S is fed to the subsequent slitter units U1 and U2.
The slitter units U1 and U2 provided in a pair adjacent to each other in the width direction of the media sheet S include a unit frame 53 that can move in the width direction along the moving feed screw 52 as shown in FIG. The unit frame 53 includes a rotary cutter 54 that is rotationally driven by a slide and rotary shaft 71 and a rotary blade 58 that is pressed against the surface of the rotary cutter 54 by a pressing spring 56.

  In order to move the slitter units U1 and U2 independently in the width direction, a feed screw shaft 52 parallel to the slide and rotary shaft 71 is provided, and the slitter units U1 and U2 correspond to each other by the rotation of the feed screw shaft 52. Along with the feeding movement of the media sheet S caused by the rotational movement of the secondary feed roller F2, the media is fed from the corresponding registration mark M1, M2 position by the rotary cutter 54 of each slitter unit U1, U2. The sheet S is cut in the length direction.

Next, the operation of the slitter described above will be described in the block diagram of the control unit shown in FIG.
Single mode When the operator selects the single mode, the upper roller 1b of the feed roller F1 is lifted by the release lever 2, and the media sheet S is placed under the clamp plate 34 of the media tilting base 30 and the feed roller F1. It is introduced onto the table T through a space formed between the upper roller 1b and the lower roller 1b. In this case, the operator inputs a known distance between the registration marks M1 and M2 from the input key 98, and the distance between the registration marks M1 and M2 is stored in the memory of the control device cpu.
When the media sheet S is introduced, as shown in FIG. 4, the operator aligns the register marks M1 and M2 printed on the image surface of the media sheet S with the scale position of the transparent scale S1, and manually operates the release lever 2. Then, the upper roller 1b is lowered, the knob 21a is grasped, the camera base 21 is moved in the width direction, and the standard line of the camera base 21 is adjusted to the corresponding scale of the camera scale S2 (step S1).

Next, when a start button (not shown) is pressed, the sheet feeding motor 1 is driven by a predetermined number of rotations, and the registration marks M1, M2 of the media sheet S are positioned in the field of view of the corresponding monitoring cameras P1, P2. Is done. In this case, the presence of the media sheet S is confirmed by the first sheet sensor 4, and if there is no media sheet S, an alarm signal is transmitted (step S2).
Thereafter, the recognition signals of the registration marks M1 and M2 from the first monitoring camera P1 and the second monitoring camera P2 are input to the control device cpu. If the recognition signals are abnormal values or are not recognized, An alarm signal is transmitted to notify that the media sheet S is set abnormally or that the positioning of the first monitoring camera P1 and / or the second monitoring camera P2 is abnormal (step S3).

If there is a positional deviation in the length direction of the registration marks M1 and M2 among the recognition signals of the registration marks M1 and M2 from the first monitoring camera P1 and the second monitoring camera P2, the control device cpu determines that “there is an inclination”. To do. The display lamp is turned on and a reading completion is transmitted (step S4). Simultaneously when the clamp lever 35 is manually operated, the clamp plate 34 is lowered, the upper roller 1b of the feed roller F1 is lifted by the operation of the release lever 2, and the media sheet S is temporarily clamped on the media tilting base 30. The media sheet S becomes free from the feed roller F1 (step S5).

After manual operation of the clamp lever 35 and the release lever 2, when an “tilt adjustment” start button (not shown) is pressed by the operator and “tilt adjustment” is instructed, the tilt motor 31 is driven and the media The tilt table 30 is tilted in the horizontal plane about the central axis 32 (step S6).

That is, as shown in FIG. 6, when the clamp lever 35 is rotated in the direction of the arrow about the mounting pin 51, the toggle links 48a and 48b are rotated clockwise around the pin 47 by the connecting link 49 to move up and down. The member 36 is forcibly lowered, and the clamp plate 34 comes into contact with the pusher 37 supported by the vertical movement member 36.
The clamp plate 34 is lowered as the pusher 37 is lowered, and the media sheet S supplied with the clamp plate 34 is pressed against the surface of the feed roller F1 by the force of the push-down spring 48.

Thereafter, the tilt motor 31 is rotationally driven, and the nut fixing plate 41 is moved in the left-right direction in FIG. 7 by the rotation of the feed screw 39, and the bearing 43 is driven by the main driving plates 41a and 41b of the nut fixing plate 41. The media tilting base 30 integrated with the holding member that supports the bearing 43 rotates about the central axis 32. As a result, the media sheet S clamped on the media tilting base 30 is tilted with respect to the table T, and the tilt of the image of the media sheet S with respect to the table T is adjusted.

  After this step S6, the process returns to step S2, and the tilting motion of the media tilting table 30 is continued until there are no positional deviations in the length direction of the register marks M1, M2 from the first monitoring camera P1 and the second monitoring camera P2. However, when the registration marks M1 and M2 have no positional deviation in the length direction, this is notified to the operator by a notification means such as a buzzer (step S7).

Thereafter, the release lever 2 is returned by the operator, the media sheet S is sandwiched between the feed rollers F1 with the inclination of the image corrected, and the clamp plate 34 is raised by manual operation of the crank lever 35 of the media tilting base 30. Thus, the clamped state of the media sheet S with respect to the media tilting table 30 is canceled (step S8). That is, as shown in FIG. 5, when the clamp lever 35 is rotated in the direction of the arrow about the mounting pin 51, the toggle links 48a and 48b are rotated counterclockwise about the pin 47 by the connecting link 49, The moving member 36 is raised, and the clamp plate 34 is released from the pusher 37 supported by the vertical moving member 36.
As a result, the clamp plate 34 is raised by the force of the push-up spring 33, and the media sheet S becomes free from the restraint of the clamp plate 34 as shown in FIG.

  After these manual operations, when the fact that the preparation state is completed is input from the input key 98, each of the position information of the register marks M1 and M2 input by the operator and the position information in the width direction detected by the monitoring cameras P1 and P2 is used. The positions of the slitter units U1 and U2 are determined, the unit feed motor 63 is driven based on the command signal, and the slitter units U1 and U2 are moved in the width direction of the media sheet S by the feed screw shaft 61. . As a result, the position of the rotary cutter 54 of each slitter unit U1, U2 corresponds strictly to the corresponding register mark M1, M2 (step S9).

After the slitter units U1 and U2 are moved and stopped in the width direction, the feed roller F1 is driven by the sheet feed motor 1 for a predetermined time, but the registration marks M1 and M2 coincide with the top and bottom cutters C in the feed roller F1. Is stopped. Then, after the media sheet S is stopped, the cutter motor 69 is operated, and the top and bottom cutter C cuts the media sheet S from the position of the registration marks M1 and M2, and the leading ends of the registration marks M1 and M2 are cut off (step S10). .
Next, upon detection of the media sheet S by the second sheet sensor 99 at the position of the secondary feed roller F2, the feed roller F1 and the secondary feed roller F2 are rotationally driven by the sheet feed motor 1 and the feed motor 65, and the controller cpu The rotary blade motor 67 is rotated in response to the command, and blank portions on both sides in the width direction of the media sheet S are cut off (step S11).

At the same time, when the media sheet S is fed by the distance in the length direction of the media sheet S of the registration marks M1 and M2 by the rotational driving of the feed roller F1 and the secondary feed roller F2, the feed roller F1 and The secondary feed roller F2 is stopped. After the feed roller F1 and the secondary feed roller F2 are stopped, the cutter actuator 69 is operated again, and the media sheet S is cut from the position of the trailing edge registration marks M1 and M2 by the top and bottom cutter C, so that the media sheet S has a predetermined size. Is cut (step S12).
Finally, the feed roller F1 and the secondary feed roller F2 are rotated again by the sheet feed motor 1 and the feed motor 65, and the remaining part of the media sheet S is discharged outside the apparatus (step S13).

Repeat mode When processing a plurality of media sheets S of the same specification, when the repeat mode is selected by the operator, the user is prompted to input the required number of sheets. The operation up to S13 is repeated, and the counter for storing the required number is subtracted at the end of step S13, and the width direction distance and the length direction distance of the register marks M1, M2 manually input after the processing of the last media sheet S are determined. Information will be cleared.

Series Mode When processing the media sheet S in which the same image is continuously printed in the length direction on one media sheet S, the series mode is selected by the operator. In this series mode, the user is prompted to input a set number indicating the continuous number, the counter for storing the required number at the end of step S12 is subtracted by the input of the set number, and the operations from step S10 to step S12 are repeated. . Of course, as in the repeat mode, information on the distance in the width direction and the distance in the length direction of the register marks M1 and M2 manually input after the processing of the last media sheet S is cleared.

  In the description of the above embodiment, the structure in which the clamp plate is controlled by a manually operated clamp lever is exemplified. However, the clamp lever may be a known actuator such as an electromagnetic solenoid, and the central axis of the media tilt base is However, it is not always necessary to provide the center of the media sheet in the width direction. For example, the media sheet may be provided at the end of the media tilt base opposite to the tilt motor.

It is a conceptual diagram of the slitter by this invention. It is a whole sectional view of the slitter. It is a principal part enlarged plan view of the slitter. It is a top view which shows the relationship between the transparent scale of the slitter, and a camera scale. It is a principal part end view of the release state in the media tilting stand of the slitter. It is the same figure as FIG. 5 of the clamp state of the same media tilting table. It is an enlarged plan view of the drive part of the same media tilting table. It is an expanded end view of the drive part of the same media tilting table. It is a perspective view of the drive part of the same media tilting table. It is a block diagram of the slitter control part by this invention.

Explanation of symbols

C Top and bottom cutter F1 Feed roller M1, M2 Registration mark S Media sheet S1 Transparent scale S2 Camera scale T Table U1, U2 Slitter unit 30 Media tilt base 31 Tilt motor 32 Center shaft 33 Push-up spring 34 Clamp plate 35 Clamp lever 36 Vertical Moving member 37 Pusher 39 Feed screw 41 Nut fixing plate 48 Pressing spring

Claims (3)

A cutting table having a large surface area on which a large-sized media sheet to be processed can be placed and a releasable feed roller for feeding the media sheet in the length direction; And a transparent scale extending in the width direction having a scale extending in the width direction in which the position of the cut mark in the width direction of the media sheet can be visually recognized, and a scale corresponding to the scale extending in the width direction of the transparent scale and And a camera scale provided on the table in parallel with each other, and a camera scale that can be manually adjusted along the camera scale and that corresponds to the cut mark position scale value read through the transparent scale. At least two surveillance cameras each located at the corresponding scale position of the scale and in the vertical direction of the device fixing part The media sheet is arranged on the media sheet taking side of the table so that it can tilt around an axis, and the media sheet can be temporarily clamped when the feed roller is released, and in response to a cut mark position signal in the length direction from the monitoring camera A media sheet tilting table that adjusts the tilt of the clamped media sheet relative to the table, and a top and bottom cutter that is disposed behind the feed roller and receives the media sheet after tilt adjustment from the feed roller and cuts the cutting mark position The media sheet is pulled from the secondary feed roller that is positioned so as to be movable in the width direction of the table and is moved to a position in the width direction corresponding to the cutting mark position signal in the width direction from the monitoring camera. Rotating to cut the media sheet in the length direction at the cutting mark position A slitter comprising at least two slitter units with a built-in cutter, wherein the media tilting table is biased upward by a push-up spring and can temporarily clamp a media sheet between the upper surface of the media tilting table. A slitting media tilting device characterized in that a clamp plate is provided, and the clamp plate is forcibly lowered through a vertically moving member that is operated up and down by an operating means and a pusher that is biased downward by a strong pressing spring. .   The media tilting table is fixed to the corresponding end of the media tilting table and is followed by the nut fixing plate which is reciprocated by a feed screw of a reversible tilting motor provided at one end of the media tilting table. The slitting media tilting device according to claim 1, wherein the tilting media tilting device is tilted by the holding member. The central axis, the media tilter slitter according to any one of claims 1 or claim 2, characterized in that provided in the media inclined base media sheet widthwise center position.