JP6804746B2 - Paper transport equipment and paper processing equipment - Google Patents

Description

The present invention relates to a paper transport device that transports paper with a 90 ° direction change. Furthermore, the present invention relates to a paper processing device including the paper transport device.

The bookbinding system is equipped with a paper processing device. FIG. 6A shows an example of the paper processing apparatus 1'. The first processing section 51 of the paper processing device 1'is a buckle folding machine, and folds the paper S sequentially supplied from the paper feeding section 50 in a direction perpendicular to the first direction X. The paper transport unit 52 transports the paper S folded by the first processing unit 51 in the first direction X, changes the transport direction by 90 °, and transfers the paper S in the second direction perpendicular to the first direction X. Transport to Y. The second processing section 57 is a buckle folding machine that folds the paper S supplied from the paper transport section 52 in a direction perpendicular to the second direction Y. Then, the paper S folded by the second processing unit 57 is sent to the post-processing device P arranged after the paper processing device 1'and post-processed.

The paper transport unit 52 receives the first transport unit 53 that transports the paper S discharged from the first processing unit 51 in the first direction X and the paper S sent out from the first transport unit 53, and receives the paper S sent out from the first transport unit 53 in the second direction Y. It is composed of a second transport unit 54 that is conveyed to the paper S and further corrects the skew of the paper S being conveyed. Such a mechanism for correcting the skew of the paper S is disclosed in Patent Document 1 and the like.

The first conveyor 53 is made of a general conveyor. The second transport unit 54 includes a reference guide 55 extending in the second direction Y and an inclined transport mechanism 56 that transports the paper S in an oblique direction with respect to the second direction Y from the upstream side of the second direction Y toward the reference guide 55. Is provided, and one side edge of the paper S being conveyed is brought into contact with the reference guide 55 over its entire length to correct the skew of the paper S.

As shown in FIG. 6A, the reference guide 55 is brought to the first conveying portion 53 so that the entire one side edge of the paper S is stably in contact with the reference guide 55 by the time the paper S is conveyed to the second processing portion 57. Place them as close together as possible. Then, the aftertreatment device P is positioned with reference to the position of the reference guide 55. Specifically, the post-processing device P is positioned so that its processing reference line C passes through the center of the paper S that abuts on the reference guide 55.

However, when the post-processing device P cannot be easily moved, the reference guide 55 must be positioned with reference to the position of the processing reference line C of the post-processing device P as shown in FIG. 6B. As a result, the distance between the first transport unit 53 and the reference guide 55 becomes large, so that the paper S sent out from the first transport unit 53 is transported to the second processing unit 57. The entire side edge was stable and did not contact the reference guide 55. That is, the skew of the paper S may not be completely corrected.

Japanese Unexamined Patent Publication No. 2014-201382 DE161132A1 JP-A-61-02643

Therefore, the present invention provides a paper transport device and a paper processing device capable of appropriately correcting the skew of paper even when the position of the reference guide is limited.

The paper transport device according to the present invention receives a first transport unit that transports and feeds paper in the first direction, and the paper that is fed from the first transport unit, and receives the paper in a second direction perpendicular to the first direction. A second transport unit for transporting is provided. The second transport unit faces the reference guide from the upstream side in the second direction in order to bring the reference guide extending in the second direction and one side edge of the paper into contact with the reference guide over its entire length. An inclined transport mechanism for transporting the paper in an oblique direction with respect to the second direction is provided. The first transport unit includes a transport conveyor that transports the paper in the first direction on the transport path, and the transport path is expanded and contracted so that the downstream end of the transport conveyor is set with respect to the reference guide. A moving mechanism for moving in a direction and the opposite direction is provided.

Further, the conveyor is provided with a pulley at the upstream end, a pulley at the downstream end provided at a distance from the pulley at the upstream end in the first direction, and a pulley at the upstream end and a pulley at the downstream end. An endless transport belt is provided, and the lower surface of the paper is supported by an upper portion of the transport belt extending in the first direction to transport the paper in the first direction. The moving mechanism is arranged inside the transport belt, and includes a telescopic pulley that engages with a lower portion of the transport belt, a vertical movement mechanism for moving the telescopic pulley in the vertical direction, and a vertical movement mechanism. A horizontal movement mechanism for moving the pulley at the downstream end in the first direction and the opposite direction is provided. Then, the moving mechanism moves the expansion / contraction pulley upward by the vertical movement mechanism, moves the pulley at the downstream end in the first direction by the horizontal movement mechanism, and moves the expansion / contraction pulley in the first direction. Is moved downward by the vertical movement mechanism, and the pulley at the downstream end is moved in the opposite direction of the first direction by the horizontal movement mechanism.

Further, the vertical movement mechanism includes a first feed screw extending in the vertical direction, and the first feed screw is rotatably provided around the axis of the first feed screw. Further, the first slider is attached to the first feed screw so as to move along the first feed screw by the rotation of the first feed screw, and supports the expansion / contraction pulley. The horizontal movement mechanism includes a second feed screw extending in the first direction, the second feed screw is rotatably provided around the axis of the second feed screw, and the horizontal movement mechanism is provided. Further, a second slider attached to the second feed screw so as to move along the second feed screw by rotation of the second feed screw, and a second slider attached to the second slider and move together with the second slider. A support that supports the pulley at the downstream end is provided. The moving mechanism further includes a motor for rotating the first feed screw and a transmission mechanism for transmitting the rotation of the first feed screw by the motor to the second feed screw.

The paper processing apparatus according to the present invention includes a first processing unit for processing paper and a second processing unit for processing the paper, and further includes the above-mentioned paper transfer device as a paper transfer unit. Then, the paper transport unit conveys the paper processed by the first processing unit in the first direction by the first transport unit, and conveys the paper in the second direction by the second transport unit. Supply to the second processing section.

In one embodiment, the paper processing apparatus determines the position of the downstream end of the transport conveyor based on at least the length of the paper processed by the first processing unit in the first direction, and the transport conveyor A control unit that controls the movement mechanism so that the downstream end moves to a determined position is further provided.

Further, in one embodiment, the first processed portion folds the paper at a right angle to the first direction, and the second processed portion folds the paper at a right angle to the second direction. ..

In the paper transport device and the paper processing device according to the present invention, the distance from the downstream end of the transport conveyor to the reference guide of the second transport section is adjusted by moving the downstream end of the transport conveyor of the first transport section by the moving mechanism. can do. As a result, stable correction of paper skew is guaranteed even when the position of the reference guide is limited.

It is a top view which shows typically the paper transporting apparatus and paper processing apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the main part of the 1st transport part. It is a side view which shows roughly the moving mechanism of the 1st transfer part, and shows the state which the transfer conveyor is most extended. It is a side view which shows the moving mechanism of the 1st transfer part roughly, and shows the intermediate state of the transfer conveyor. It is a side view which shows roughly the moving mechanism of the 1st transfer part, and shows the state which the transfer conveyor is shortened most. It is a top view which shows typically the conventional paper processing apparatus.

Hereinafter, the paper transport device and the paper processing device according to the present invention will be described with reference to the accompanying drawings.
The paper processing apparatus 1 is provided in the bookbinding system. With reference to FIG. 1, the paper processing apparatus 1 includes a paper feeding unit 2 that receives the paper S discharged from a preprocessing apparatus (not shown) arranged in front of the paper processing apparatus 1 and sequentially conveys the paper S in the first direction X. .. The paper feed unit 2 is composed of a conveyor.

The paper processing apparatus 1 includes a first processing unit 3 arranged after the paper feeding unit 2. The first processing unit 3 processes the paper S supplied from the paper feeding unit 2. In the embodiment, the first processing unit 3 is a paper folding machine, more specifically, a buckle folding machine. The first processing unit 3 includes, for example, a buckle, a pair of take-in rollers for taking the paper S into the buckle, and a pair of discharge rollers for folding the portion of the paper S taken into the buckle that protrudes outside the buckle. Etc. are included. According to the above configuration, the first processing unit 3 folds and discharges the paper S in a direction perpendicular to the first direction X.

The paper processing apparatus 1 conveys the paper S processed by the first processing unit 3 in the first direction X, changes the conveying direction by 90 °, and transfers the paper S in the second direction Y perpendicular to the first direction X. It is provided with a paper transport unit 4 (paper transport device) for transporting to.

The paper transport unit 4 includes a first transport unit 5 arranged after the first processing unit 3 and a second transport unit 6 arranged after the first transport unit 5. The first transport unit 5 transports (that is, folded) the paper S processed (that is, folded) by the first processing unit 3 in the first direction X and sends it out. The configuration of the first transport unit 5 will be described in detail later.

The second transport unit 6 receives the paper S sent out from the first transport unit 5, transports it in the second direction Y, and further corrects the skew of the paper S being conveyed. The second transport unit 6, the reference guide 7 extending in the second direction Y, in order to abut the one side edge of the sheet S to the reference guide 7 over its entire length, the sheet S, on the conveying path G _2, the It is provided with an inclined conveying mechanism 8 for conveying diagonally from the upstream side of the two directions Y toward the reference guide 7 in the second direction Y. The height of the transport path G ₂ of the second transport unit 6 is lower than that of the transport path G ₁ of the first transport unit 5. Reference guide 7 is disposed on the conveying path G _2, are directed to the downstream end of the first conveyor 5.

When the paper S is fed from the downstream end of the first transport unit 5 onto the transport path G ₂ of the second transport unit 6, the paper S is transported in the oblique direction by the inclined transport mechanism 8. As a result, one side edge of the paper S comes into contact with the reference guide 7 in order from the tip end portion. Finally, one side edge of the paper S abuts on the reference guide 7 over its entire length. As a result, the skew of the paper S is corrected.

Specifically, as in Patent Document 1, the inclined transfer mechanism 8 creates a negative pressure in the inclined roller row composed of a plurality of rollers, the suction chamber arranged below the inclined roller row, and the suction chamber. It may be provided with a decompressor for sucking the paper S onto the tilting roller. The inclined transfer mechanism 8 sucks the paper S onto the inclined roller row by the decompressor and conveys the paper S in the oblique direction by the inclined roller row, thereby causing the paper S to skid on the inclined roller row. As a result, one side edge of the paper S comes into contact with the reference guide 7 over its entire length, and the skew of the paper S is corrected.

Further, the inclined transport mechanism 8 may include, for example, a tilted transport belt and a plurality of balls rotatably held on the tilted transport belt, as in Patent Document 2. The tilting transport mechanism 8 transports the paper S in the oblique direction by the tilting transport belt while pressing the paper S against the tilting transport belt by its own weight, and slides it sideways on the tilted transport belt. As a result, one side edge of the paper S comes into contact with the reference guide 7 over its entire length, and the skew of the paper S is corrected.

Further, as in Patent Document 3, for example, the inclined transfer mechanism 8 has an inclined transfer belt in which innumerable holes are formed, a suction chamber arranged inside the inclined transfer belt, and a paper with a negative pressure inside the suction chamber. It may be provided with a decompressor for sucking S onto the inclined transport belt. The inclined transfer mechanism 8 conveys the paper S in the oblique direction by the inclined transfer belt while sucking the paper S on the inclined transfer belt by the decompressor, and slides on the inclined transfer belt. As a result, one side edge of the paper S comes into contact with the reference guide 7 over its entire length, and the skew of the paper S is corrected.

The paper processing apparatus 1 includes a second processing unit 9 arranged after the second transport unit 6. The second processing unit 9 processes the paper S supplied from the second transport unit 6. In the embodiment, the second processing unit 9 is a buckle folding machine similar to the first processing unit 3, and the paper S supplied from the second transport unit 6 is folded and discharged at a right angle to the second direction Y.

In the embodiment, the first processed portion 3 and the second processed portion 9 are paper folding machines, specifically buckle folding machines, but knife folding machines and the like may be used instead. Further, the first processing section 3 and the second processing section 9 replace the paper folding machine with a scoring machine for forming streaks on the paper S, a perforation machine for forming perforations on the paper S, and a paper S having a predetermined shape. It may be a punching machine for punching paper or a cutting machine / slitter for cutting paper S. Further, the first processed portion 3 and the second processed portion 9 may be an image forming machine that forms an image on the paper S.

The paper S discharged from the second processing unit 9 is received by the post-processing device P arranged in the subsequent stage of the paper processing device 1 and post-processed. The aftertreatment device P of this embodiment is large and cannot be easily moved.

2 and 3, the first transport portion 5 includes a frame 10, a conveyor 11 mounted on frame 10 for conveying the sheet S in the first direction X on the conveying path G _1, It has.

The conveyor 11 includes a pulley 12 at the upstream end and a pulley 13 at the downstream end provided at intervals in the first direction X from the pulley 12 at the upstream end. The pulley 12 at the upstream end and the pulley 13 at the downstream end are attached to the rotating shafts 14 and 15 extending at right angles to the first direction X, respectively, and are rotatable around the rotating shafts 14 and 15, respectively.

The conveyor 11 drives the conveyor belt 16 by rotating an endless conveyor belt 16 spanned by a pulley 12 at the upstream end and a pulley 13 at the downstream end and a rotating shaft 14 of the pulley 12 at the upstream end. It is equipped with a belt drive mechanism 17 (FIG. 2). A plurality of transport belts 16 are provided at appropriate intervals in a direction perpendicular to the first direction X. Conveyor 11 is conveyed at the upper portion extending in the first direction X of the belt 16 to support the lower surface of the sheet S, first by the conveyor belt 16 which is driven by the belt drive mechanism 17 on the conveying path G ₁ the sheet S It is transported in the direction X.

The first transfer unit 5 includes a moving mechanism 18 attached to the frame 10 for moving the downstream end of the transfer conveyor 11 in the first direction X and the opposite direction with respect to the reference guide 7. As shown in FIG. 3, the moving mechanism 18 has a telescopic pulley 19, a vertical movement mechanism for moving the telescopic pulley 19 in the vertical direction, and a pulley 13 at the downstream end in the first direction X and the opposite direction. It is equipped with a horizontal movement mechanism for moving.

As shown in FIG. 3, the expansion / contraction pulley 19 is arranged inside the endless transport belt 16 and engages with the lower portion of the transport belt 16. The tension rollers 20 and 21 are also engaged with the lower portion of the transport belt 16.

The first feed screw 22 extends in the vertical direction and is rotatably supported by the frame 10 around its axis, and the first slider 23 is rotated along the first feed screw 22 by the rotation of the first feed screw 22. It is attached to the first feed screw 22 so as to move. The telescopic pulley 19 is rotatably supported by the first slider 23 around the rotation shaft via a rotation shaft extending at right angles to the first direction X. As a result, when the first feed screw 22 rotates around its axis, the expansion / contraction pulley 19 moves in the vertical direction.
The vertical movement mechanism is configured by the first feed screw 22 and the first slider 23.

The second feed screw 24 extends in the first direction X and is rotatably supported by the frame 10 around its axis, and the second slider 25 becomes the second feed screw 24 by the rotation of the second feed screw 24. It is attached to the second feed screw 24 so as to move along it. The slide guide 26 is supported by the frame 10 so as to extend in the first direction X, and the support 27 is provided on the slide guide 26 so as to be movable in the first direction X and the opposite direction by the guidance of the slide guide 26. ing. Further, the support 27 is attached to the second slider 25 and moves together with the second slider 25. The pulley 13 at the downstream end is supported by the support 27 via the rotating shaft 15. As a result, when the second feed screw 24 rotates around its axis, the pulley 13 at the lower end moves in the first direction X and the opposite direction. Since the pulley 12 at the upstream end is supported by the frame 10 via the rotating shaft 14, it does not move.
The horizontal movement mechanism is composed of the second feed screw 24, the second slider 25, the slide guide 26, and the support 27.

As shown in FIG. 2, a plurality of holding rollers 28 for suppressing the lifting of the paper S are arranged above the pulley 13 at the downstream end for each of the transport belts 16. The holding roller 28 is supported by the support 27 via the support arm 29 and the support shaft 30, and moves in the first direction X and the opposite direction together with the pulley 13 at the downstream end.

As shown in FIG. 3, the moving mechanism 18 includes a driving motor 31. The drive shaft of the motor 31 is connected to the lower end of the first feed screw 22 via a coupling 32, and rotates the first feed screw 22.

Further, the moving mechanism 18 includes a transmission mechanism that transmits the rotation of the first feed screw 22 by the motor 31 to the second feed screw 24. The transmission mechanism is composed of a first gear 33 and a second gear 34. The first gear 33 is attached to the upper end of the first feed screw 22, and the second gear 34 is attached to the upstream end of the second feed screw 24. The first gear 33 and the second gear 34 are in mesh with each other. When the first feed screw 22 is rotated around its axis by the motor 31, this rotation is transmitted to the second feed screw 24 by the first gear 33 and the second gear 34, and the second feed screw 24 is also around the axis. Rotate.

According to the moving mechanism 18 as described above, when the first feed screw 22 and the second feed screw 24 are rotated in one direction around the axis by the motor 31, the expansion / contraction pulley 19 is as shown in FIGS. Moves downward and the pulley 13 at the downstream end moves in the direction opposite to the first direction X. As a result, the upper portion of the transport belt 16 that supports the lower surface of the paper S and transports the paper S is shortened while extending in the first direction X, and the downstream end of the transport conveyor 11 is relative to the reference guide 7. To separate.

On the other hand, when the first feed screw 22 and the second feed screw 24 are rotated in the other direction around the axis by the motor 31, the expansion / contraction pulley 19 moves upward and the downstream end pulley 13 moves in the first direction X. Move to. As a result, the upper portion of the conveyor belt 16 extends in the state of extending in the first direction X, and the downstream end of the conveyor belt 11 approaches the reference guide 7.

As described above, by the pulley 13 and the telescoping of the pulley 19 of the downstream end is simultaneously moved by vertical movement mechanism and the horizontal movement mechanism, the conveyor 11, i.e. the conveying path G ₁ is expanded or contracted, the conveyor 11 The downstream end moves in the first direction X and the opposite direction with respect to the reference guide 7.

Further, as shown in FIG. 1, the paper processing apparatus 1 includes a control unit 35. The control unit 35 is for controlling the moving mechanism 18 of the first processing unit, and includes a processor and the like. The moving mechanism 18 (the motor 31 thereof) is connected to the control unit 35. The control unit 35 stably corrects the skew of the paper S based on the length of the first direction X of the paper S processed by the first processing unit 3 and the position of the reference guide 7. The position of the downstream end of the conveyor 11 is determined. For example, as shown in FIG. 1, the distance between the downstream end of the conveyor 11 and the reference guide 7 is slightly larger than the length of the paper S processed by the first processing unit 3 in the first direction X. The position of the downstream end of the conveyor 11 is determined.

Then, the control unit 35 controls the motor 31 of the moving mechanism 18 so that the downstream end of the conveyor 11 moves to the position determined as described above. As a result, the optimum distance between the downstream end of the conveyor 11 and the reference guide 7 is set, the paper S is smoothly delivered from the first conveyor 5 to the second conveyor 6, and the paper S is skewed. The correction is stable.

In the above, the control unit 35 transfers the length of the paper S processed by the first processing unit 3 in the first direction X from the first processing unit 3 to the control unit 35 of the paper S of the first processing unit 3. It is calculated based on the processing information. When the first processing unit 3 is a buckle folding machine as in the embodiment, the processing information includes the size, folding mold, and folding size of the folded paper S, and the control unit 35 is based on these, and the first processing unit 35. The length of the first direction X of the paper (that is, the signature) S folded by 3 is calculated. Instead of this, the operator may input the length of the first direction X of the paper S through an input unit (not shown), and the control unit 35 may acquire this from the input unit.

When the post-processing device P cannot be easily moved as in the embodiment, the reference guide 7 includes the position of the processing reference line C of the post-processing device P and the first direction X of the paper S processed by the first processing unit 3. It must be located on the transport path G2 as determined by the length of. Therefore, in the above, the control unit 35 sets the position of the reference guide 7 as the position of the processing reference line C acquired from the post-processing device P and the first direction of the paper (signature) S calculated as described above. It is calculated based on the length of X. Instead of this, a detection sensor for detecting the position of the reference guide 7 may be provided, and the control unit 35 may acquire the position of the reference guide 7 from this detection sensor. Further, the operator may input the position of the reference guide 7 through the input unit, and the control unit 35 may acquire this from the input unit.

According to the above configuration according to the present invention, even when the position of the reference guide 7 is restricted due to reasons such as the aftertreatment device P not being easily moved, the distance between the downstream end of the conveyor 11 and the reference guide 7 is limited. The distance can be optimally adjusted by the moving mechanism 18 according to the length of the paper S processed by the first processing unit 3 in the first direction X. As a result, stable correction of the skew of the paper S is guaranteed regardless of the position of the reference guide 7.

Further, since the moving mechanism 18 is controlled by the control unit 35 and the position of the downstream end (downstream end pulley 13) of the conveyor 11 is optimally and automatically adjusted, the burden on the user is reduced. ..

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

1 Paper processing device 1'Paper processing device (conventional technology)
3 First processing unit 4 Paper transfer unit (paper transfer device)
5 1st transport section 6 2nd transport section 7 Reference guide 8 Inclined transport mechanism 9 2nd processing section 11 Conveyor conveyor 12 Upstream end pulley 13 Downstream end pulley 18 Moving mechanism 19 Telescopic pulley S Paper X 1st direction Y 2nd direction G1 Conveyor path of 1st processing section G2 Conveyor path of 2nd processing section P Post-processing device C Processing reference line of post-processing device

Claims (4)

A first transport unit that transports and feeds paper in the first direction,
A second transport unit that receives the paper fed from the first transport unit and transports the paper in a second direction perpendicular to the first direction is provided.
The second transport unit
The reference guide extending in the second direction and
An inclined transport mechanism for transporting the paper in an oblique direction with respect to the second direction from the upstream side of the second direction toward the reference guide in order to bring one side edge of the paper into contact with the reference guide over its entire length. With,
The first transport unit
A conveyor that transports the paper in the first direction on the transport path,
A moving mechanism for expanding and contracting the transport path to move the downstream end of the transport conveyor in the first direction and the opposite direction with respect to the reference guide is provided .
The conveyor
The pulley at the upstream end and
A pulley at the downstream end provided at a distance from the pulley at the upstream end in the first direction, and a pulley at the downstream end.
An endless transport belt spanning the upstream end pulley and the downstream end pulley is provided.
The lower surface of the paper is supported by the upper portion of the transport belt extending in the first direction, and the paper is transported in the first direction.
The moving mechanism
An expansion / contraction pulley that is arranged inside the transport belt and engages with the lower portion of the transport belt.
A vertical movement mechanism for moving the telescopic pulley in the vertical direction,
A horizontal movement mechanism for moving the pulley at the downstream end in the first direction and the opposite direction is provided.
The expansion / contraction pulley is moved upward by the vertical movement mechanism, the pulley at the downstream end is moved in the first direction by the horizontal movement mechanism, and the expansion / contraction pulley is moved downward by the vertical movement mechanism. The pulley at the downstream end is moved in the direction opposite to the first direction by the horizontal movement mechanism.
The vertical movement mechanism
A first feed screw extending in the vertical direction is provided, and the first feed screw is rotatably provided around the axis of the first feed screw.
The vertical movement mechanism further
A first slider attached to the first feed screw so as to move along the first feed screw by rotation of the first feed screw and supports the expansion / contraction pulley.
The horizontal motion mechanism is
A second feed screw extending in the first direction is provided, and the second feed screw is rotatably provided around the axis of the second feed screw.
The horizontal motion mechanism further
A second slider attached to the second feed screw so as to move along the second feed screw by rotation of the second feed screw.
A support that is attached to the second slider and moves with the second slider to support the pulley at the downstream end is provided.
The moving mechanism further
A motor that rotates the first feed screw and
A transmission mechanism for transmitting the rotation of the first feed screw by the motor to the second feed screw is provided.
A paper transport device characterized by this. The first processing part that processes paper and
A second processing section for processing the paper is provided, and further
The paper transport device according to claim 1 is provided as a paper transport unit.
The paper transport unit transports the paper processed by the first processing unit in the first direction by the first transport unit, and conveys the paper in the second direction by the second transport unit to the second. A paper processing device characterized by supplying to the processing section. The position of the downstream end of the conveyor is determined based on at least the length of the paper processed by the first processing unit in the first direction, and the downstream end of the conveyor is moved to the determined position. The paper processing apparatus according to claim 2 , further comprising a control unit that controls the moving mechanism. A claim characterized in that the first processed portion folds the paper at a right angle to the first direction, and the second processed portion folds the paper at a right angle to the second direction. The paper processing apparatus according to claim 2 or 3 .

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