JP2009280363A - Stacker device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stacker device can solve any trouble in which a lower edge of a paper sheet is damaged or stacked paper sheets are oscillated and the stacked state of the paper sheets is collapsed. <P>SOLUTION: The stacker device includes a discharging roller 1 which holds a conveyed paper sheet and discharges it onto a stacking surface 200 extending downstream of the conveying direction, a conveying belt 21 which constitutes the stacking surface 200 and is provided movably in the conveying direction by a belt driving mechanism, a longitudinal receiving guide 31 which is provided movable in the conveying direction on the stacking surface 200 by a guide driving mechanism and receives the discharged paper sheet in an upright state upstream of the conveying direction, a paper sheet position detection unit for detecting the paper sheet stacked and arrived at the predetermined position, and a control unit for controlling the guide driving mechanism and the belt driving mechanism. When the paper sheet is detected by the paper sheet position detection unit, the control unit controls both mechanisms so that the longitudinal receiving guide 31 and the conveying belt 21 are simultaneously moved downstream of the conveying direction by the predetermined distances, respectively. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a stacker device that sequentially stacks conveyed sheets in a standing state toward the upstream in the conveying direction.

For example, Patent Documents 1 and 2 disclose stacker devices that sequentially stack the conveyed sheets in a standing state toward the upstream in the transport direction. In these apparatuses, a sheet is conveyed toward a vertical receiving guide by a conveying belt and is received in a standing state by the vertical receiving guide.
Japanese Patent Laid-Open No. 10-194553 Japanese Patent Laid-Open No. 2007-119088

  In the above apparatus, since the conveyance belt is constantly moving at a constant speed, the lower edge of the sheet received by the vertical receiving guide is always in sliding contact with the conveyance belt. For this reason, there is a problem that the lower edge of the paper is damaged or the stacked paper is vibrated and the stacked state of the paper is lost.

  It is an object of the present invention to provide a stacker device that can solve the above-mentioned problems.

  The first invention of the present application is a stacker device that stacks the conveyed sheets in a standing state toward the upstream in the conveying direction, and stacks the conveyed sheets sandwiched therebetween and extends downstream in the conveying direction. A pair of upper and lower discharge rollers for discharging onto the surface and the stacking surface are configured to be movable in the transport direction by a belt drive mechanism, and are transported on the stack surface by a guide drive mechanism. A vertical receiving guide that receives the discharged paper in a state where it is stood on the upstream side in the transport direction, and a paper position detection unit that detects the paper that has been stacked and has come to a predetermined position. A control unit that controls the guide drive mechanism and the belt drive mechanism, and when the paper is detected by the paper position detection unit, the control unit simultaneously holds the vertical receiving guide and the transport belt by a predetermined distance. Transport direction As is moved into the flow, so as to control the both mechanisms, it is characterized in that.

  The second invention of the present application is a stacker device that stacks the conveyed sheets in a standing state toward the upstream in the conveying direction, and stacks the conveyed sheets sandwiched therebetween and extends downstream in the conveying direction. A pair of upper and lower discharge rollers for discharging onto the surface and the stacking surface are configured to be movable in the transport direction by a belt drive mechanism, and are transported on the stack surface by a guide drive mechanism. A vertical receiving guide that is movably provided and receives the discharged paper in a standing state on the upstream side in the conveyance direction, a sheet number detection unit that detects the number of sheets conveyed, and a guide A control unit that controls the drive mechanism and the belt drive mechanism. When the predetermined number of sheets are detected by the sheet number detection unit, the control unit simultaneously moves the vertical receiving guide and the conveyance belt at a predetermined distance. Only under the transport direction To move to, so as to control the both mechanisms, it is characterized in that.

  In the first and second inventions, when the sheets are stacked on the stacking surface one after another, the transport belt moves together with the longitudinal guide, that is, with the stacked sheets. Therefore, the conveyance belt hardly comes into sliding contact with the lower edge of the stacked paper. Therefore, according to the present invention, it is possible to prevent the problem that the lower edge of the paper is damaged or the stacked paper is vibrated and the stacked state is destroyed.

[First Embodiment]
FIG. 1 is a perspective view of a stacker device according to an embodiment of the first invention of the present application. The stacker device 10 is configured to sequentially stack the conveyed sheets in the upright direction in the conveying direction (X direction). 2 is a partially omitted plan view of the stacker device 10, FIG. 3 is a view taken along arrow III in FIG. 2, FIG. 4 is a view taken along arrow IV in FIG. 2, and FIG. FIG.

  The stacker device 10 includes a discharge roller 1, a conveyance belt 21 and a belt drive mechanism 22, a longitudinal receiving guide 31 and a guide drive mechanism 32, an upper edge regulation guide 4, a paper position detection unit 5, and a paper presence / absence detection unit 6. And a control unit (not shown).

  The discharge roller 1 includes an upper roller 11 and a lower roller 12 that discharge the sheet 100 onto a stacking surface 200 that extends downstream in the conveyance direction. The discharge roller 1 is provided such that a line L connecting the rotation centers of both rollers 11 and 12 is inclined with respect to the vertical line E toward the upstream side in the transport direction. As a result, the discharge roller 1 can discharge the paper 100 obliquely upward as indicated by an arrow.

  The belt drive mechanism 22 includes two horizontal rollers 221 and 222 disposed on the upstream side and the downstream side in the transport direction, and a drive motor 223 that rotationally drives the downstream roller 222. The conveyor belt 21 is stretched between a roller 221 and a roller 222, and the upper surface constitutes a stacking surface 200. In addition, the conveyance belt 21 is inclined so as to become lower toward the downstream in the conveyance direction. The conveyor belt 21 includes a thick central portion 211 and narrow end portions 212 and 213 on both sides.

  The guide drive mechanism 32 includes two rotary shafts 321 and 322 arranged on the upstream side and the downstream side in the transport direction, and two rotary shafts 321 and 322 that are spanned at both ends. Drive belts 323 and 324 and a drive motor 325 for rotating the rotary shaft 322 are provided. The vertical receiving guide 31 is located on the stacking surface 200 and is fixed to the driving belts 323 and 324 by flanges 311 and 312 extending downward from both sides in the width direction, and moves along with the movement of the driving belts 323 and 324. It is supposed to be.

  The vertical receiving guide 31 is slightly inclined to the downstream side in the transport direction with respect to the surface F perpendicular to the stacking surface 200. As shown in FIGS. 1 and 2, the vertical receiving guide 31 has a receiving surface 310 formed by stretching a wire 313.

  The guide drive mechanism 32 further includes a blocking mechanism that blocks drive transmission to the vertical receiving guide 31 when a load exceeding a certain level that prevents the vertical receiving guide 31 from moving upstream in the conveying direction is applied. Specifically, this blocking mechanism is a torque limiter 33 shown in FIG. 6 provided on the output shaft of the drive motor 325. The drive motor 325 is configured to rotationally drive the rotary shaft 322 via the torque limiter 33. 7 and 8 are exploded perspective views of the torque limiter 33. FIG. The torque limiter 33 is configured by connecting a driving pulley 331 and a driven pulley 332 using four springs 333 and four balls 334. Both the pulleys 331 and 332 insert the shaft 3311 of the driving pulley 331 into the through hole 3321 of the driven pulley 332, and four balls 334 in contact with the four recesses 3322 of the driven pulley 332 are arranged in the four of the driving pulley 331. The four springs 333 inserted in the holes 3312 are pressed and connected. As a result, when a large load is applied to one of the pulleys 331 and 332, the torque limiter 33 causes the four balls 334 to be disengaged from the recess 3322 so that the pulleys 331 and 332 are relatively idle. It has become. The torque limiter 33 may be provided not on the output shaft of the drive motor 325 but on the rotating shaft 321 or the rotating shaft 322.

  The upper edge regulation guide 4 extends from the support arm 41 toward the downstream in the transport direction. The support arm 41 extends with a slight inclination from a position directly above the discharge roller 1 to the downstream side in the transport direction. The upper edge regulation guide 4 is supported by the support arm 41 so as to be movable up and down. The upper edge regulation guide 4 has a pressing surface 40 configured by stretching a wire 42.

  The paper position detection unit 5 is composed of a sensor disposed almost directly below the discharge roller 1. When the lower edge 102 (FIG. 12) of the paper 100 comes directly above, the paper position detection unit 5 detects it.

  As shown in FIG. 2, the paper presence / absence detection unit 6 detects the presence / absence of the paper 100 received by the vertical receiving guide 31 by transmission sensors 61 and 62 arranged on the upstream side and the downstream side in the transport direction. It is configured as such. Note that the paper presence / absence detection unit 6 is provided at two places in the width direction, and can detect even if the paper 100 is stacked on one side in the width direction.

  When the paper position is detected by the paper position detection unit 5, the control unit moves the vertical receiving guide 31 and the transport belt 21 simultaneously by the predetermined distances T2 and T3 to the downstream in the transport direction. 22 is controlled. The moving distance T3 of the conveyor belt 21 is set slightly longer than the moving distance T2 of the vertical receiving guide 31. Further, the control unit controls the guide drive mechanism 32 so that the vertical receiving guide 31 cannot be moved upstream in the transport direction when the presence / absence of the sheet 100 is detected by the sheet presence / absence detection unit 6. It has become.

  Next, the operation of the stacker device 1 configured as described above will be described. Prior to the operation of the apparatus 1, the vertical receiving guide 31 is disposed closest to the discharge roller 1, as shown in FIG. 9, and the distance T1 here is determined by the vertical receiving guide 31. This is the distance at which one sheet of paper 100 can be received.

  First, as shown in FIG. 9, when the first sheet V-folded 100 passes through the discharge roller 1 with the fold 101 as the head, the sheet 100 has the longitudinal receiving guide 31 with the fold 101 as the head. It moves upward along the receiving surface 310 and stands along the receiving surface 310 as shown in FIG. As a result, the paper 100 is received by the vertical receiving guide 31.

  Next, as shown in FIG. 11, when the second sheet 100 passes the discharge roller 1 with the fold 101 as the head, the sheet 100 follows the first sheet 100 with the fold 101 as the head. Then, as shown in FIG. 12, it is in a state of standing side by side with the first sheet 100. As a result, the paper 100 is stacked on the stacking surface 200.

  However, in the state of FIG. 12, the lower edge 102 of the second sheet 100 is detected by the sheet position detection unit 5. For this reason, the guide drive mechanism 32 and the belt drive mechanism 22 are controlled by the controller, and as shown in FIG. 13, the longitudinal receiving guide 31 and the transport belt 21 are simultaneously transported in the transport direction by a predetermined distance T2, T3, respectively. Move downstream. That is, the movement of the vertical guide 31 by the distance T2 and the movement of the conveyance belt 21 by the distance T3 occur simultaneously. As a result, the second sheet 100 becomes a position that is not detected by the sheet position detection unit 5.

  Next, as shown in FIG. 14, when the third sheet 100 passes through the discharge roller 1 with the fold line 101 as the head, it is stacked on the stacking surface 200 as shown in FIG. The edge 102 is detected by the paper position detection unit 5. As a result, as shown in FIG. 16, the vertical receiving guide 31 and the transport belt 21 are simultaneously moved further downstream by a predetermined distance T2, T3 in the transport direction.

  Then, the fourth sheet 100 is also stacked on the stacking surface 200 in the same manner as shown in FIG.

  As described above, while the vertical receiving guide 31 and the conveying belt 21 are simultaneously moved to the downstream in the conveying direction by the predetermined distances T2 and T3, the sheets 100 passing through the discharge roller 1 are successively placed on the stacking surface 200. It is loaded while standing.

  When a certain number of sheets 100 are stacked, feeding of the sheets 100 to the discharge roller 1 is stopped, and the stacked sheets 100 are manually removed from the vertical receiving guide 31, that is, the stacking surface 200.

  When the paper 100 is removed from the vertical receiving guide 31, the paper presence / absence detecting unit 6 detects the absence of the paper 100, the control unit controls the guide driving mechanism 32, and the vertical receiving guide 31 is initially moved upstream in the transport direction. Move to the position (position in FIG. 9). Then, the feeding of the paper 100 to the discharge roller 1 is resumed, and the same operation as described above is started. On the other hand, when the paper 100 remains in the vertical receiving guide 31, the presence / absence of the paper 100 is detected by the paper presence / absence detecting unit 6, and the vertical receiving guide 31 cannot be moved upstream in the conveying direction.

  If the vertical receiving guide 31 moves toward the upstream in the transport direction even though the paper 100 remains in the vertical receiving guide 31, the paper 100 is compressed between the vertical receiving guide 31 and the discharge roller 1 or the like. As a result, the product value of the paper 100 is impaired. However, in the present apparatus 10, when the paper 100 starts to contact the discharge roller 1 or the like, a load exceeding a certain level that prevents the vertical guide 31 from moving upstream in the transport direction is applied, so the torque limiter 33 is idled, The drive transmission to the vertical receiving guide 31 is cut off, and the movement of the vertical receiving guide 31 stops. Therefore, the vertical receiving guide 31 does not move to the extent that the paper 100 is compressed.

According to the stacker device 1 having the above configuration, the following effects can be exhibited.
(1) When the sheets 100 are successively stacked on the stacking surface 200, the transport belt 21 moves together with the vertical receiving guide 31, that is, with the stacked sheets 100. Therefore, the transport belt 21 hardly comes into sliding contact with the lower edge 102 of the stacked paper 100. Therefore, it is possible to prevent a problem that the lower edge 102 of the paper 100 is damaged or the stacked paper 100 is vibrated to collapse the stacked state.

(2) The conveyance belt 21 and the vertical receiving guide 31 move simultaneously, but the movement distance T3 of the conveyance belt 21 is slightly longer than the movement distance T2 of the vertical reception guide 31, so that the conveyance belt 21 is loaded on the stacked paper 100. Is transported slightly toward the vertical guide 31. For this reason, the stacked sheets 100 can be pressed against the vertical guide 31 and the stacking is dense. Therefore, the stacked state of the sheets 100 can be stabilized. In particular, the stacked state of the folded sheets 100 can be stabilized.

(3) Since the sheet 100 passing through the discharge roller 1 has a momentum, there is a possibility that the sheet 100 may be shifted upward. In particular, the paper 100 coming later may shift the paper 100 loaded immediately before upward. However, since the upper edge of the paper 100 received by the vertical receiving guide 31 is regulated by the upper edge regulation guide 4, it is possible to reliably prevent the paper 100 from shifting upward.

(4) Since the conveyance belt 21 is inclined so as to become lower toward the downstream in the conveyance direction, the sheet 100 can be smoothly set on the vertical receiving guide 31.

(5) Since the discharge roller 1 can discharge the paper 100 obliquely upward, the paper 100 can be smoothly set up on the vertical receiving guide 31.

(6) When the paper 100 remains in the vertical receiving guide 31, the presence / absence of the paper 100 is detected by the paper presence / absence detection unit 6, and the vertical receiving guide 31 cannot be moved upstream in the transport direction. When the paper 100 is manually removed from the vertical guide 31, the vertical guide 31 can be prevented from moving upstream in the transport direction. Therefore, it is possible to prevent an operator who is removing the stacked paper 100 from being injured by the movement of the vertical guide 31 during the work.

(7) Even if the paper 100 remains in the vertical receiving guide 31, even if the vertical receiving guide 31 tries to move upstream in the transport direction, the torque limiter 33 rotates idly and moves to the vertical receiving guide 31. Is interrupted, and the vertical guide 31 stops moving. Therefore, also from this point, it is possible to prevent the operator from being injured by the movement of the vertical guide 31 during the work, and further to prevent the commercial value of the paper 100 from being damaged.

[Second Embodiment]
This embodiment relates to the second invention of the present application. In the present embodiment, instead of the sheet position detection unit 5 of the first embodiment, a sheet number detection unit that detects the number of sheets conveyed is provided, and the control unit is configured to detect the number of sheets. When a predetermined number of sheets are detected at, the guide driving mechanism 32 and the belt driving mechanism 22 are controlled so that the longitudinal receiving guide 31 and the conveying belt 21 are simultaneously moved downstream by a predetermined distance T2, T3 in the conveying direction, respectively. It is like that. In addition, the other structure and operation | movement in this embodiment are the same as 1st Embodiment.

  That is, in the present embodiment, the number of sheets 100 sent out from the discharge roller 1 is detected instead of detecting the lower edge 102 of the stacked sheets 100.

  According to this embodiment, the same effect as that of the first embodiment can be exhibited.

  Note that the predetermined number of sheets 100 to be detected may be one, or may be two or more.

  In the first and second embodiments, the distances T1 and T2 are set to dimensions that allow a single sheet of paper 100 to be stacked. However, two or more sheets of paper 100 are appropriately included. You may set to the dimension only loaded.

  Moreover, although the moving distance T3 of the conveyance belt 21 is set longer than the moving distance T2 of the vertical receiving guide 31, T3 and T2 may be the same.

  The stacker apparatus according to the present invention has a great industrial utility value because it can prevent problems such as the bottom edge of the paper being damaged or the stacked paper being vibrated to collapse the stacked state.

It is a perspective view of the stacker device of one embodiment of the present invention. It is a partially omitted plan view of the stacker device. FIG. 3 is a view taken in the direction of arrow III in FIG. 2. FIG. 4 is a view taken along arrow IV in FIG. 2. It is a cross-sectional schematic fragmentary diagram of the stacker apparatus on the upstream side in the transport direction. It is a perspective view of a torque limiter. It is a disassembled perspective view of a torque limiter. It is a disassembled perspective view of a torque limiter. It is a fragmentary sectional view showing the starting state of operation of a stacker device. FIG. 10 is a partial sectional view showing the operation following FIG. 9. FIG. 11 is a partial cross-sectional view illustrating the operation following FIG. 10. FIG. 12 is a partial sectional view showing an operation following FIG. 11. FIG. 13 is a partial sectional view showing an operation following FIG. 12. It is a fragmentary sectional view which shows the operation | movement following FIG. FIG. 15 is a partial cross-sectional view showing an operation following FIG. 14. FIG. 16 is a partial cross-sectional view illustrating the operation following FIG. 15. FIG. 17 is a partial cross-sectional view showing an operation following FIG. 16.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Discharge roller 10 Stacker apparatus 100 Paper 102 Lower edge 21 Conveyance belt 22 Belt drive mechanism 200 Loading surface 31 Vertical receiving guide 32 Guide drive mechanism 33 Torque limiter 4 Upper edge regulation guide 5 Paper position detection part 6 Paper presence detection part 6

Claims (7)

In the stacker device that stacks the conveyed paper upright in a standing state toward the upstream in the transport direction,
A pair of upper and lower discharge rollers for sandwiching and discharging the conveyed paper onto a stacking surface extending downstream in the transport direction;
Conveying belt, which is configured to constitute the loading surface and is movable in the conveying direction by a belt driving mechanism;
A vertical receiving guide provided by the guide drive mechanism so as to be movable in the transport direction on the stacking surface and receiving the discharged paper in a standing state on the upstream side in the transport direction;
A paper position detection unit for detecting the paper that has been loaded and has come to a predetermined position;
A control unit for controlling the guide driving mechanism and the belt driving mechanism;
With
When the paper is detected by the paper position detection unit, the control unit controls both the mechanisms so that the vertical receiving guide and the conveyance belt are simultaneously moved downstream by a predetermined distance in the conveyance direction.
A stacker device characterized by that. In the stacker device that stacks the conveyed paper upright in a standing state toward the upstream in the transport direction,
A pair of upper and lower discharge rollers for sandwiching and discharging the conveyed paper onto a stacking surface extending downstream in the transport direction;
Conveying belt, which is configured to constitute the loading surface and is movable in the conveying direction by a belt driving mechanism;
A vertical receiving guide provided by the guide drive mechanism so as to be movable in the transport direction on the stacking surface and receiving the discharged paper in a standing state on the upstream side in the transport direction;
A paper number detection unit that detects the number of papers that have been conveyed;
A control unit for controlling the guide driving mechanism and the belt driving mechanism;
With
When a predetermined number of sheets are detected by the sheet number detection unit, the control unit controls both the mechanisms so that the vertical receiving guide and the conveyance belt are simultaneously moved downstream by a predetermined distance in the conveyance direction. ing,
A stacker device characterized by that.   The stacker device according to claim 1, further comprising an upper edge regulation guide that regulates an upper edge of the stacked paper from above.   The stacker device according to claim 1, wherein the transport belt is inclined so as to become lower toward the downstream in the transport direction.   The stacker device according to claim 1, wherein the discharge roller is provided so as to discharge the sheet obliquely upward. A paper presence / absence detecting unit for detecting the presence / absence of paper in the vertical guide;
The control unit is configured to control the guide driving mechanism so as to disable the movement of the vertical receiving guide upstream in the conveyance direction when the presence of the sheet is detected by the sheet presence / absence detection unit. Item 3. A stacker device according to item 1 or 2.   The guide driving mechanism has a blocking mechanism that blocks drive transmission to the vertical receiving guide when a load of a certain level or more is applied to the vertical receiving guide that prevents the upstream movement of the vertical receiving guide. The stacker device described in 1.

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