JP6207380B2 - Paper slitter, paper processing apparatus provided with the same, and control method therefor - Google Patents

Description

  The present invention relates to a paper slitter that cuts paper along a paper conveyance direction by a rotary blade and a paper processing apparatus including the same, and in particular, by a plurality of rotary blades arranged at intervals in the paper conveyance width direction. The present invention relates to a paper slitter capable of cutting two or more places, a paper processing apparatus including the paper slitter, and a control method thereof.

  Patent Documents 1 and 2 are prior art documents disclosing the paper slitter. In the paper slitter described in Patent Document 1, the intermediate head is composed of one cylindrical upper blade and a pair of left and right disk-shaped lower blades that respectively contact with both axial sides of the upper blade. . By cutting the paper in the paper transport direction with both ends in the axial direction of the upper blade and each lower blade, an unnecessary intermediate sheet corresponding to the width of the upper blade and a side sheet as a pair of products on both sides thereof To divide.

  Patent Document 2 is a prior application by the applicant of the present application, in which two cutting cutters composed of a pair of upper and lower rotary blades are arranged at intervals in the paper conveyance width direction, and each cutting cutter is The slitter main body can be moved and adjusted independently in the paper conveyance width direction. That is, by independently moving and adjusting the position in the conveyance width direction of the pair of rotary blades of each cutting cutter, unnecessary divided sheets (cut pieces) in the middle of the conveyance width direction, and divided sheets as products on both sides thereof Divide into two.

JP2013-144322A JP-A-2005-239307

  In the paper slitter of Patent Document 1, the dimension of the unnecessary intermediate sheet to be cut off in the paper conveyance width direction is determined by the dimension of the upper blade in the paper conveyance width direction. Therefore, if you want to change the size of the intermediate sheet to be cut in the paper conveyance width direction, you must replace it with another intermediate head that has a different size in the paper conveyance width direction of the upper blade. Take it. In addition, since it is necessary to own and manage a plurality of intermediate heads having different sizes in the paper conveyance width direction of the upper blade, a storage space for replacement parts is required, and maintenance of the parts is troublesome.

  In Patent Document 2, when the cutting position in the paper conveyance width direction is changed at a predetermined interval in the paper conveyance width direction, two cutting cutters each composed of a pair of upper and lower rotary blades are separated from each other independently. It is necessary to move in the direction, there is a possibility that a minute shift occurs in the predetermined interval, and it is difficult to maintain high cutting position accuracy.

  The object of the present invention is to adjust the size of the intermediate divided sheet in the sheet conveyance width direction without cutting parts and without requiring a storage space for replacement parts, and can be cut with high accuracy. A sheet slitter, a sheet processing apparatus including the sheet slitter, and a control method thereof.

  In order to solve the above-described problem, a paper slitter according to a first invention of the present application includes a pair of first rotary blades for cutting paper along a paper transport direction and a first blade that rotatably supports the first rotary blades. A first cutting unit having a holding body, a pair of second rotary blades for cutting paper along the paper transport direction, and a second cutting unit having a second blade holding body for rotatably supporting the second rotary blade; The second blade holder is configured to move the first cutting unit in the paper conveyance width direction and to increase or decrease the interval in the paper conveyance width direction between the first rotary blade and the second rotary blade. An interval adjusting mechanism that is connected to the first blade holder so as to be able to move closer to and away from the first sheet holding width direction.

  A paper slitter according to a second invention of the present application includes a pair of first rotary blades for cutting paper along the paper transport direction, a pair of second rotary blades for cutting paper along the paper transport direction, A blade holder that rotatably supports the first rotary blade and the second rotary blade and is movable in the paper conveyance width direction, and the second rotary blade are moved closer to and away from the first rotary blade in the paper width direction. An interval adjusting mechanism that moves in a possible manner.

  A paper slitter according to a third invention of the present application is in contact with a cylindrical common rotary blade receiver having a fixed length in the paper conveyance width direction, and an outer peripheral surface of the common rotary blade receiver, and along the paper conveyance direction. A first rotary blade for cutting paper; a second rotary blade for contacting the outer peripheral surface of the common rotary blade receiver and cutting paper along the paper transport direction; the first rotary blade and the second rotary blade A blade holder that can freely rotate and move in the paper conveyance width direction, a blade holder that rotatably supports the common rotary blade receiver and that can move in the paper conveyance width direction, and the second rotation. An interval adjusting mechanism that moves the blade so as to be close to and away from the first rotary blade in the paper conveyance width direction.

  In the paper slitter of each of the inventions described above, the present invention can preferably have the following configurations.

(A) In the first invention, among the divided sheets divided into a plurality of sheets by the second rotary blade, support for supporting a divided sheet located on the far side in the sheet conveyance width direction from the first rotary blade from below. A guide portion is provided on the second blade holder.

(B) In each of the first to third inventions, the second rotary blade side in the transport width direction with respect to the cutting position by the first rotary blade, and the downstream side in the paper transport direction from the cutting position by the first rotary blade. A first discharge guide is provided on the side to discharge the cut divided sheets downward. In this case, more preferably, a first position switching mechanism for displacing the first discharge guide between a guide position where the first discharge guide is in contact with the divided paper and guided downward and a non-guide position which is not in contact with the divided paper. It has.

(C) In each of the first to third inventions, the first rotary blade side in the transport width direction from the cutting position by the second rotary blade, and the downstream side in the paper transport direction from the cutting position by the second rotary blade. A second discharge guide for discharging the cut divided sheets downward is provided on the side, and the second discharge guide is movable in the sheet conveyance width direction with respect to the first rotary blade together with the second rotary blade. It has become. In this case, a second position switching mechanism for displacing the second discharge guide between a guide position where the second discharge guide is in contact with the divided paper and guided downward and a non-guide position where the second discharge guide is not in contact with the divided paper is provided. it can. Furthermore, it is preferable that the second rotary blade further includes a contact / separation mechanism for displacing the second rotary blade between a contact position for cutting the paper and a separation position for not cutting the paper, and the second position switching mechanism includes the contact / separation mechanism. The second discharge guide is displaced in conjunction with the displacement of the second rotary blade by the mechanism.

  The present application also provides a paper processing apparatus provided with each of the paper slitters. In the paper processing apparatus, the paper slitter is a paper width direction in which the first rotary blade and the second rotary blade are in contact with the paper. Between the use area and the retreat position located outward in the paper transport width direction from the paper side edge, is movable in the paper transport width direction.

  In the paper processing apparatus, preferably, the following configuration can be provided.

(D) The first rotary blade is located closer to the retracted position than the second rotary blade in the paper transport width direction.

(E) an intermediate divided paper width detection unit that detects an intermediate divided paper width between the first rotary blade and the second rotary blade in the paper width direction; and the intermediate divided paper detected by the intermediate divided paper width detection unit. And a display unit for displaying the width.

(F) An input unit that inputs an intermediate divided paper width between the first rotary blade and the second rotary blade in the paper width direction, and a display unit that displays the input intermediate divided paper width. ing.

(G) The display unit is disposed on the paper slitter.

(H) The display unit is disposed on an operation panel of the sheet processing apparatus.

(I) A plurality of the paper slitters are arranged side by side so as to be movable in the paper conveyance width direction, a moving mechanism that moves the slitters in the paper width direction, and a control unit that controls the movement of the slitters. The control unit controls the movement of each sheet slitter so that the width of the adjacent sheet slitters in the sheet width direction is equal to or greater than a preset minimum interval.

(J) The paper slitter having a pair of first rotary blades and a pair of second rotary blades is cut to release the pair of first rotary blades and the pair of second rotary blades so that they cannot be cut. A mechanism, and in the vicinity of the retracted position in the paper conveyance width direction, when the paper slitter moves to the retracted position, the pair of rotary blades are brought into a cutting release state by abutting against an acting portion of the cutting release mechanism. A release action part is provided.

  The present application further provides a control method of the paper processing apparatus, and in the control method of the paper processing apparatus, sets the width of the intermediate divided paper generated between the first rotary blade and the second rotary blade. In this case, the position of the first rotary blade in the paper width direction at the retracted position is set as a reference position, and the position of the first rotary blade in the paper width direction with respect to the reference position is first determined, and then the determination is performed. The cutting position of the second rotary blade with respect to the cutting position of the first rotary blade is determined.

(1) According to the paper slitter according to the first to third inventions, when the paper is divided into unnecessary intermediate divided paper (cut pieces) and divided paper as products on both sides thereof, intermediate divided paper Can be set easily and accurately by simply adjusting the position of the second rotary blade. In addition, when changing the width of the intermediate divided paper, it is not necessary to replace the rotating blade parts with different dimensions, so the number of parts can be reduced, and there is no need for storage space for replacement parts. Is also unnecessary.

(2) In the invention of the paper processing apparatus and the control method therefor, the same effects as the paper slitter are obtained. Further, when only the cutting position of the sheet is different in the width direction without changing the width of the intermediate divided sheet, it is only necessary to move the slitter in the width direction, and the distance between the first rotary blade and the second rotary blade is set. Misalignment does not occur. Further, when the paper slitter is not used, the non-use state can be easily set by simply moving the entire paper slitter to the retracted position.

(3) According to the configuration (a) of the first invention, even if the second rotary blade is moved and adjusted in the paper conveyance width direction with respect to the first rotary blade, the product division divided by the second rotary blade The paper can be always and smoothly sent out to the next process by the support guide portion.

(4) According to the configuration (b), unnecessary intermediate divided paper generated between the first rotary blade and the second rotary blade is quickly discharged downward by the first discharge guide immediately after cutting. In addition, since the first discharge guide can be displaced between the guide position and the non-guide position, only when an unnecessary intermediate divided sheet is generated, the first discharge guide is positioned at the guide position to discharge the unnecessary intermediate divided sheet. can do.

(5) According to the said structure (c), there exists an effect similar to the effect in the said structure (b) by utilizing a 2nd discharge guide. Further, by moving the second rotary blade to a separation position where the paper is not cut by the contact / separation mechanism, it is possible to perform cutting similar to a paper slitter having only a pair of conventional rotary blades.

(6) According to the configuration (d), when the retracted position is the home position in the paper conveyance width direction of the entire paper slitter, the first rotary blade is disposed closer to the home position than the second rotary blade. Therefore, the cutting position by the paper slitter is set on the basis of the position of the first rotary blade at the home position, and the width of the intermediate divided paper is accurately based on the first rotary blade on the fixed side. The width and cutting position of the intermediate divided sheet can be set. Similar effects can be expected in the invention of the control method.

(7) According to the configurations (e) to (h), the operator can easily confirm the set dimension in the sheet conveyance width direction of the intermediate divided sheet by the display unit.

(8) According to the configuration (i), in a structure in which one slit processing unit includes a plurality of paper slitters, it is possible to prevent the two paper slitters from colliding during the position adjustment of the paper slitter.

(9) According to the configuration (j), since the rotary blades are automatically separated from each other when the paper slitter is moved to a retracted position that is not used, deterioration of the rotary blades during storage can be prevented.

1 is a schematic perspective view of a sheet processing apparatus including a sheet slitter according to the present invention. FIG. 2 is a simplified longitudinal sectional view of the paper processing apparatus of FIG. 1. It is a perspective view of the slit processing unit which has a paper slitter concerning a 1st embodiment. FIG. 4 is a perspective view of the paper slitter of FIG. 3. FIG. 4 is a schematic front view of a state in which an interval between rotating blades of the paper slitter of FIG. 3 is narrowed. FIG. 4 is a schematic front view of a state in which a space between rotating blades of the paper slitter of FIG. 3 is widened. It is a front view of the paper slitter of FIG. It is VIII-VIII sectional drawing of FIG. It is IX-IX sectional drawing of FIG. It is the front schematic of the paper slitter which shows the modification of 1st Embodiment. It is a schematic side view showing a modified example of the discharge guide. FIG. 12 is a schematic side view showing a state of the non-guide position of the discharge guide of FIG. 11. It is a top view which shows an example of the cutting pattern of a paper. It is a top view which shows another example of the cutting pattern of a paper. FIG. 14 is a simplified perspective view of a paper slitter in a state of being cut with the cutting pattern of FIG. 13. FIG. 15 is a simplified perspective view of a paper slitter in a state of being cut with the cutting pattern of FIG. 14. FIG. 9 is a schematic front view of a paper slitter according to a second embodiment of the present invention in a state in which a space between rotary blades is narrowed. FIG. 18 is a schematic front view of the paper slitter of FIG. FIG. 9 is a schematic front view of a paper slitter according to a third embodiment of the present invention in a state in which a space between rotary blades is narrowed. FIG. 20 is a schematic front view showing a state in which the interval between the rotary blades of the paper slitter of FIG. 19 is widened. FIG. 20 is a schematic side view of the upper half of the paper slitter of FIG. 19. It is a modification of the 3rd Embodiment of this invention, and is the front schematic of the paper slitter of the state which narrowed the space | interval between rotary blades. FIG. 23 is a schematic front view showing a state in which the interval between the rotary blades of the paper slitter of FIG. 22 is widened. 10 is a schematic front view of a paper slitter according to a fourth embodiment of the present invention. FIG. 25 is a schematic vertical side view of the paper slitter of FIG. 24. It is a schematic side view showing a modification of the second discharge guide. FIG. 27 is a schematic side view showing a state of the non-guide position of the discharge guide of FIG. 26. It is a perspective view of the principal part of the paper slitter which shows the modification of a 2nd discharge guide and a connection mechanism.

[First Embodiment]
A paper slitter and a paper processing apparatus according to the first embodiment of the present invention will be described with reference to FIGS. For convenience of explanation, the upstream side of the sheet conveyance direction X1 of the apparatus is the rear side of the apparatus and each component, and the left and right direction (sheet conveyance width direction W) when the apparatus is viewed in the sheet conveyance direction X1 It demonstrates as a left-right direction of components. In FIG. 1, the paper processing apparatus includes a paper feed unit 2 at an upstream end (rear end) in the paper transport direction X1 of the apparatus main body 1, and a paper discharge unit at a downstream end (front end) in the paper transport direction X1. 3, between the paper feed unit 2 and the paper discharge unit 3, a plurality of processing units 11, 12, 13, 14, 15, and 16 incorporating various paper processing mechanisms are provided along the paper transport direction X <b> 1. It is installed side by side.

  A pair of transparent upper lids 5 are provided on the upper end surface of the apparatus body 1 so as to be openable and closable. By opening the upper lid 5, each processing unit 11, 12, 13, 14, 15, 16 can be moved from above. It can be mounted in the main body 1. In addition, the processing unit 14 shown with a virtual line has shown the state taken out upwards from the inside of the apparatus main body 1. FIG. An operation panel 7 having operation keys and a display unit is provided on the operation side of the upper surface of the sheet feeding unit 2.

  FIG. 2 is a simplified cross-sectional view of the paper processing apparatus. As each processing unit, a plurality of slit processing units 11, 12, 13, which cut the paper along the paper transport direction X 1 in order from the paper feeding unit 2 side. 14, a folding unit 15 that forms a fold in the paper conveyance width direction W, and a cutting unit 16 that cuts the paper in the paper conveyance width direction W are housed. Each processing unit 11 to 16 is connected to a drive motor M, and each drive motor M is electrically connected to the control unit 17. The control unit 17 is electrically connected to the operation panel 7. A pair of transport rollers 18 for transporting paper is disposed between the processing units 11 to 16 and at the front and rear ends of the apparatus body 1, and the transport roller pair 18 is connected to the drive motor M.

  FIG. 3 is a perspective view of the slit processing unit 14 provided with a pair of left and right paper slitters 22, and the slit processing unit 14 includes a lower U-shaped support frame 21, and the support frame 21 has a pair of left and right side wall plates 21a, a top wall plate 21b that connects upper ends of both side wall plates 21a, and a connecting member 21c that connects both side wall plates 21a. Between the side wall plates 21a, upper and lower guide rods for supporting a paper slitter (only the upper side is shown) 25, a blade driving shaft 26 for driving a rotary blade, and two front and rear lead screws for moving the slitter (only the rear side) 28), a roller driving shaft for driving the discharge roller (only the end portion is shown) 29 and the like are installed in parallel with each other. The guide rod 25 is fixed to the side wall plates 21a, and the blade drive shaft 26, the roller drive shaft 29, and the lead screw 28 are rotatably supported on the side wall plates 21a via bearings. The blade drive shaft 26 is linked to a drive motor M (FIG. 2) via a pair of gears 31 arranged on one of the left and right (for example, left) side wall plates 21a, and is a roller for driving the discharge roller. The drive shaft 29 is linked to the blade drive shaft 26 through gears 32, 33, and 34. The top wall plate 21b is provided with a pair of left and right handles 35, and is used when the slit processing unit 14 is attached or detached.

  The left and right sheet slitters 22 are symmetrical and have the same structure except that they are individually connected to the front and rear lead screws 28. Therefore, only the structure of the right paper slitter 22 will be described in detail, and a detailed description of the left paper slitter 22 will be omitted.

[Configuration of the paper slitter 22]
FIG. 5 is a schematic front view of the right sheet slitter 22 as viewed from the upstream side (rear side) in the sheet transport direction X1. The sheet slitter 22 includes upper and lower first blade holders 41a and 41b and upper and lower second slits. The blade holders 42a and 42b, the upper first rotary blade 51a rotatably supported by the upper first blade holder 41a, and the upper first rotary blade rotatably supported by the upper second blade holder 42a. The upper second rotary blade 52a facing the left side 51a, the lower first rotary blade 51b rotatably supported by the lower first holding body 41b, and the lower second blade holding body 42b are rotatable. A pair of discharge rollers 36 and 37 (see FIG. 5) supported by the lower second rotary blade 52b that is supported and opposed to the lower first rotary blade 51b from the left, and the lower first blade holder 41b. 8 and FIG. 9).

  The upper and lower first blade holders 41a and 41b are connected to each other by a stepped (Z-shaped) first connection plate (indicated by a broken line) 43 on the front side (downstream in the transport direction) of the upper and lower first rotary blades 51a and 51b. The upper first blade holder 41a is fitted and supported by the upper guide rod 25 so as to be movable in the left-right direction (paper conveyance width direction) W, and the lower first blade holder 41b is a lower guide. The rod 25 is fitted and supported so as to be movable in the left-right direction W. The upper and lower first blade holders 41a and 41b and the upper and lower first rotary blades 51a and 51b constitute a first cutting unit 41.

  A moving nut 48 for moving the slitter is provided on the upper surface of the upper first blade holder 41a. The moving nut 48 is screwed into the lead screw 28, and the moving nut 48 and the lead screw 28 The moving mechanism of the paper slitter 22 is configured. When the gear 30 (FIG. 5) provided at the axial end portion of the lead screw 28 is rotated by the drive motor M, the first cutting unit 41 including the upper and lower first blade holders 41a and 41b is caused by the screw feed action. , Move in the left-right direction W.

  The boss portion 51c of the upper first rotary blade 51a is supported by the upper first blade holding body 41a so as not to move in the axial direction and to be rotatable through a bearing.

  The lower first blade holder 41 b includes a main body portion 60 that fits into the lower guide rod 25, a right support plate 61 that protrudes upward from the right end portion of the main body portion 60, and the right support plate 61. A bracket 62 protruding leftward from the lower portion and a left support plate 63 extending upward from the left end of the bracket 62 are integrally provided. A first support shaft 58 extending in the left-right direction W is fixed between the upper portions of the left and right support plates 63, 61, and the lower first rotary blade 51b is freely rotatable on the first support shaft 58 and has a shaft. It is supported so as to be movable in the direction (left-right direction). The lower first rotary blade 51b is biased to the left side (the lower second rotary blade 52b side) by the first coil spring 64, whereby the upper end portion of the lower first rotary blade 51b is The lower first end of the upper first rotary blade 51a abuts with a constant pressure from the right. Although not shown, the left end of the coil spring 64 and the right end surface of the lower first rotary blade 51b do not interfere with the rotation of the lower first rotary blade 51b. It is in contact with the inner race of the bearing.

  The upper and lower second blade holders 42a and 42b are coupled to each other by a U-shaped second connecting plate (shown by a broken line) 44 on the front side (downstream in the transport direction) of the upper and lower second rotary blades 52a and 52b. The upper and lower second blade holders 42a and 42b and the upper and lower second rotary blades 52a and 52b constitute a second cutting unit 42.

  The upper second blade holding body 42a is connected to the upper first blade holding body 41a so as to be movable and adjustable in the left-right direction W by an interval adjusting mechanism 55 having an adjusting bolt 56. The adjustment bolt 56 is supported by the upper first blade holding body 41a so as to be rotatable and immovable in the left-right direction, and the left end portion of the adjustment bolt 56 is screwed into the female screw hole 56b of the upper second blade holding body 42a. That is, by gripping and rotating the knob 56a provided at the right end of the adjustment bolt 56, the upper second blade holding body 42a (second cutting unit 42) is turned into the upper first blade holding body 41a (first cutting). It moves in the left-right direction W with respect to the unit 41), and adjusts the interval in the left-right direction W of the left and right upper rotary blades 51a, 52a. The boss portion 52c of the upper second rotary blade 52a is supported by the upper second blade holder 42a so as not to move in the axial direction and to be rotatable through a bearing.

  The lower second blade holding body 42b integrally includes a left support plate 71, a bracket 72 protruding rightward from the lower portion of the left support plate 71, and a right support plate 73 extending upward from the right end of the bracket 72. Is prepared. A second support shaft 59 extending in the left-right direction is fixed between the upper portions of the left and right support plates 71, 73, and the lower second rotary blade 52 b is rotatable on the second support shaft 59, and is axial. It is supported movably. The lower second rotary blade 52b is urged to the right side (the lower first rotary blade 51b side) by the second coil spring 74, whereby the upper end portion of the lower second rotary blade 52b is The second rotary blade 52a is in contact with the lower end of the second rotary blade 52a from the left with a constant pressure. Although not shown, the right end of the coil spring 74 and the left end surface of the lower second rotary blade 52b do not interfere with the rotation of the lower second rotary blade 52b. It is in contact with the inner race of the bearing.

  An L-shaped fixing piece 75 extending downward and extending to the right is fixed to the lower left end of the lower second blade holding body 42b. A long hole 75a is formed extending in the direction. On the other hand, a fixing bolt 76 having a knob (head) 76a is screwed into the main body portion 60 of the lower first blade holding body 41b, and a long hole 75a of the fixing piece 75 is formed in the bolt 76. It is engaged so as to be movable in the left-right direction. That is, by loosening the fixing bolt 76, the second cutting unit 42 is released from being fixed in the axial direction (left-right direction) with respect to the first cutting unit 41, and the second cutting unit 42 is moved to the left and right with respect to the first cutting unit 41. It is possible to move in the direction W, and the interval in the left-right direction W of the rotary blades 51a, 51b, 52a, 52b is adjusted. After the adjustment, the fixing piece 75 is fixed to the main body portion 60 of the lower first blade holding body 41b by tightening the fixing bolt 76, whereby the second cutting unit 42 is fixed to the first cutting unit 41. It is fixed at a predetermined position in the left-right direction W.

  In FIG. 3, a detection plate 77 for detecting a home position protruding downward is provided on the lower surface of the lower second blade holder 42b of the right paper slitter 22. An optical sensor 78 for the right home position HPR is provided at a predetermined position in the main body 1, and when the optical sensor 78 detects the detection plate 77, the right sheet slitter 22 is positioned at the right home position HPR. Detect that.

  In FIG. 5, the drive structure of the upper first and second rotary blades 51 a and 52 a will be described. The boss portions 51 c and 52 c of the upper first and second rotary blades 51 a and 52 a are arranged on the outer peripheral surface of the blade drive shaft 26. The blade drive shaft 26 is key-coupled so as to be movably fitted in the axial direction (left-right direction W) and to rotate integrally with the blade drive shaft 26. That is, a keyway extending in the axial direction (left-right direction W) is formed on the outer peripheral surface of the blade drive shaft 26, while the inner peripheral surfaces of the boss portions 51c, 52c of the upper first and second rotary blades 51a, 52a. Is provided with a key that fits into the key groove.

  In FIG. 7, in the right region (region far from the second rotary blades 52a, 52b) of the upper and lower first rotary blades 51a, 51b, the lower end of the upper first blade holder 41a and the lower first blade Upper and lower sheet first support guide portions 68 are provided at the upper end of the right support plate 61 of the holding body 41b. On the other hand, in the left region of the upper and lower second rotary blades 52a and 52b (region far from the first rotary blades 51a and 51b), the lower end of the upper second blade holder 42a and the lower second blade holder Upper and lower sheet second support guide portions 69 are provided at the upper end of the left support plate 71 of 42b. The first support guide portion 68 and the second support guide portion 69 may be provided only at the upper ends of the right support plate 61 and the left support plate 71, and the upper ends of the support plates 61 and 71 may be provided. The support guide part may be comprised.

  In FIG. 8, the upper and lower sheet first support guides 68 are arranged so that the downstream part (front part) in the sheet transport direction X1 from the cutting part (contact part) of the upper and lower first rotary blades 51a and 51b is in the vertical direction. They are formed at a narrow interval, substantially parallel to each other, and substantially horizontally. On the other hand, the upstream portion (rear portion) in the paper transport direction X1 from the cutting portion is formed in a square shape that opens in the vertical direction toward the upstream side in the paper transport direction X1 in order to reliably receive the paper. Has been.

  The pair of discharge rollers 36 and 37 is configured such that the resin drive side discharge roller 36 is disposed below the lower rotary blades 51b and 52b and is key-coupled to the roller drive shaft 29. The roller drive shaft 29 can be integrally rotated and moved in the left-right direction. The driven-side discharge roller 37 is disposed on the front side of the drive-side discharge roller 36, has a surface made of rubber, contacts the front end of the drive-side discharge roller 36, and is provided on the lower first holding body 41b. The support shaft 39 is rotatably supported.

  In FIG. 9, the upper and lower paper second support guide portions 69 are also downstream in the paper transport direction X1 from the cutting portions (contact portions) of the upper and lower second rotary blades 52a and 52b, similarly to the paper first support guide portion 68. The side portions are formed substantially parallel to each other at a narrow interval in the vertical direction and substantially horizontally. On the other hand, the upstream side portion in the paper transport direction X1 from the cutting portion reliably receives the paper, so the paper transport direction X1. It is formed in a square shape that opens in the vertical direction toward the upstream side.

  In FIG. 6, the left support plate 63 of the lower first blade holding body 41b and the right support plate 73 of the lower second blade holding body 42b are both positioned between the lower first and second rotary blades 51b and 52b. In addition, arc-shaped inner first and second discharge guides 81b and 82b are formed from the upper end to the front end of both support plates 63 and 73, respectively. That is, in order to discharge unnecessary intermediate divided paper generated between the first rotary blades 51a and 51b and the second rotary blades 52a and 52b to the both support plates 63 and 73, the inner first and second inner plates are discharged. Two discharge guide portions 81b and 82b are provided.

  FIG. 8 clarifies the shape of the inner first discharge guide 81b. The inner first discharge guide 81b extends from the cutting portion of the upper and lower first rotary blades 51a and 51b toward the downstream side in the paper transport direction X1. It is formed in an arc shape so as to curve downward.

  Furthermore, the first connecting plate 43 that connects the upper and lower first blade holders 41a and 41b has an arc-shaped upper first that faces the inner first discharge guide 81b with a gap from the outside in the radial direction. A discharge guide 81a is formed. That is, the intermediate divided sheets discharged from the first rotary blades 51a and 51b are guided downward by the outer first discharge guide 81a and the inner first discharge guide 81b facing each other.

  FIG. 9 clarifies the shape of the second discharge guide 82b. The second discharge guide 82b has an arc shape that curves downward from the cutting portion of the upper and lower second rotary blades 52a and 52b toward the downstream side in the paper transport direction X1. Is formed.

  Furthermore, the second connecting plate 44 that connects the upper and lower second blade holders 42a and 42b has an arc-shaped outer second facing the inner second discharge guide 82b with a gap from the outside in the radial direction. A discharge guide 82a is formed. That is, the first rotary blades 51a and 51b and the second rotary blade 52a in cooperation with the first discharge guides 81a and 81b described above by the outer second discharge guide 82a and the inner second discharge guide 82b facing each other. The intermediate divided sheet discharged from 52b is guided downward.

  In FIG. 4, the lower first and second rotary blades 51b and 52b are placed on the lower first and second blade holders 41b and 42b on the lower side of the right paper slitter 22 at the right home position HPR (FIG. 3). A cutting release mechanism 83 is provided for each of the upper first and second rotary blades 51a and 52a to be separated in the axial direction.

  The cutting release mechanism 83 is supported by a support bracket 84 (shown in a transparent manner) fixed to the main body portion 60 of the lower first blade holder 41b, and extends in the left-right direction W and is rotatably supported by the support bracket 84. A cam shaft 85; a cam 86 provided integrally with the cam shaft 85; a cam follower 87 provided on each of the support plates 61 and 71 of the lower first and second blade holders 41b and 42b; 3 and a push-in bolt 89 provided on the right wall plate 21a of the support frame 21 shown in FIG.

  In FIG. 4, the cam 86 is eccentric with respect to the cam shaft 85, and the bolt abutting portion 88 has an inclined surface 88 a that is inclined upward toward the right, and this inclined surface 88 a is the pushing bolt 89. It faces from the left. The cam follower 87 is supported by a vertical support shaft 90 provided on each support plate 61, 71 of the lower first and second blade holding portions 41b, 42b so as to be rotatable about the support shaft. It is formed in an L shape as seen. Each cam follower 87 has a contact portion 87 a that protrudes downward, and each contact portion 87 a is in contact with the front end of the cam 86. The front end portion of each cam follower 87 faces the left end surface of the lower first rotary blade 51b and the right end surface of the lower second rotary blade 52b so as to be able to contact each other. The push-in bolt 89 protrudes leftward from the right side wall plate 21 a (FIG. 3) of the support frame 21.

  That is, when the right sheet slitter 22 moves to the right home position HPR (FIG. 3), the inclined surface 88a of the bolt contact portion 88 contacts the tip of the right push bolt 89, and the bolt contact portion 88 is pushed up. As a result, the cam shaft 85 rotates in the direction of the arrow B1, the cam 86 pushes the abutting portions 87a of both cam followers 87 forward, and rotates both cam followers 87 around the support shaft 90 in the B2 direction. By rotation of each cam follower 87 in the B2 direction, the lower first and second rotary blades 51b and 52b are separated in the left-right direction W from the upper first and second rotary blades 51a and 52a, respectively. Thereby, the contact state between the upper first rotary blade 51a and the lower first rotary blade 51b and the contact state between the upper second rotary blade 52a and the lower second rotary blade 52b are released. According to this configuration, even when the paper slitter 22 is stored for a long time, it is possible to prevent the rotating blades from adhering to each other or deteriorating at the contact portion.

  In FIG. 15, the right home position HPR of the right paper slitter 22 is located at the right end in the transport path and deviates from the right edge of the paper, while the left home position HPL of the left paper slitter 22 is transported. It is located at the left edge in the path and is off the left edge of the paper. When one paper slitter 22 is moved to the home position and the other paper slitter 22 cuts the paper, the upper rotary blades 51 a and 52 a of the one paper slitter 22 located at the home position are rotated by the blade drive shaft 26. However, since the contact between the upper rotary blades 51a, 52a and the lower rotary blades 51b, 52b is released and there is no friction between the blades, the rotary blades 51a, 52a, 51b, 52b are not deteriorated. .

  FIG. 13 shows an example of a cutting pattern for one sheet N, and a total of eight products G, four on each of the left and right sides, are manufactured. Specifically, eight divided sheets G for product are manufactured by four slit lines E extending in the sheet conveying direction X1 and five cutting lines C extending in the left-right direction (paper conveying width direction) W. Unnecessary margin divided sheets G1 are generated at the front and rear ends and the left and right ends of the sheet, respectively, and one unnecessary intermediate divided sheet G2 is generated at the central portion of the left and right widths.

  FIG. 14 shows another example of the cutting pattern, and a total of twelve products G are manufactured, four in each of the left and right and middle three regions. Specifically, 12 product divided sheets G are manufactured by six slit lines E extending in the sheet conveying direction X1 and five cutting lines C extending in the left-right direction (paper conveying width direction) W. Unnecessary margin divided sheets G1 are generated at the front and rear ends and the left and right ends of the sheet N, respectively, and unnecessary intermediate divided sheets G2 are generated in the two areas of the left and right width intermediate portions.

  FIG. 15 shows a cutting operation based on the cutting pattern shown in FIG. 13. For example, the slit processing unit 11 on the upstream side in the transport direction X1 cuts off the margin divided sheet G1 at the left and right end portions, and a pair of left and right sheets. The slit processing unit 14 having the slitter 22 cuts out unnecessary intermediate divided paper (so-called dove) G2 in the center portion of the left and right widths. In the cutting operation of FIG. 15, the left paper slitter 22 has retreated to the left home position HPL, and the right paper slitter 22 is positioned at the center of the left and right width of the paper N.

  FIG. 16 shows a cutting operation based on the cutting pattern shown in FIG. 14, and the left and right margin divided sheets G1 are cut off by, for example, the slit processing unit 11 on the upstream side in the sheet conveying direction X1, and a pair of left and right sheets. The slit processing unit 14 having the slitter 22 cuts out two unnecessary intermediate divided sheets G2 at two positions in the middle part of the left and right width. In the cutting operation of FIG. 16, unnecessary intermediate divided paper G2 is discharged at two locations, so that the left and right paper slitters 22 are arranged at predetermined intervals from each other in the intermediate portion in the left-right direction W.

[Position adjustment of the paper slitter 22 in the left-right direction W and the interval adjustment between the rotary blades]
In FIG. 15, the right paper slitter 22 includes a use area in the paper conveyance width direction W where the first rotary blades 51 a and 51 b and the second rotary blades 52 a and 52 b abut on the paper N, and a right home position HPR (right retracted position). ) And the paper conveyance width direction W. Further, the left side paper slitter 22 includes a use area in the paper conveyance width direction W where the first rotary blades 51a and 51b and the second rotary blades 52a and 52b abut on the paper N, a left home position HPL (left side retracted position), and , And can be moved in the paper conveyance width direction W.

  In the case of cutting with the cutting pattern of FIG. 13, as described above, in FIG. 15, the left paper slitter 22 is retracted to the left home position HPL, and the right paper slitter 22 is set at the center of the left and right width. When the right paper slitter 22 is moved, the right paper slitter 22 is moved in the left-right direction W by rotating the gear 30 of the lead screw 28 for the right paper slitter 22 in FIG. Set. Thereby, the position of the 1st rotary blade 51a, 51b supported by the 1st cutting unit 41 in the left-right direction W is first determined. This position is set with reference to the position in the left-right direction W of the first rotary blades 51a, 51b at the right home position HPR.

  Next, the bolt 76 for fixing the second cutting unit is loosened, the knob 56a of the adjustment bolt 56 is pinched, and the adjustment bolt 56 is rotated, so that the second cutting unit 42 is relative to the first cutting unit 41. To the left and right direction W, and the distance in the left and right direction W between the first rotary blades 51a and 51b and the second rotary blades 52a and 52b, that is, the left and right width of the unnecessary intermediate divided paper G2 is set. After the setting, the position in the left-right direction W of the second cutting unit 42 with respect to the first cutting unit 41 is fixed by tightening the fixing bolt 76.

  FIG. 6 shows a state where the interval in the left-right direction W between the rotary blades 51a, 51b, 52a, 52b is wider than the state of FIG. The adjustment stroke in the left-right direction W that can be adjusted by the interval adjustment mechanism 55 is defined by the length of the long hole 75a of the fixed piece 75, and is about several centimeters, for example.

[Cutting work by the paper slitter 22]
8 and 9, during the paper processing operation, the paper N that reaches the entrance of the paper slitter 22 of the slit processing unit 14 is caused by the paper first and second support guide portions 68 and 69 opened in the shape of C. Guided by the contact portions (cutting portions) of the upper and lower rotary blades 51a, 51b, 52a, 52b, the paper N is cut in the transport direction X1 along two slit lines E as shown in FIG.

  The divided sheets G that are cut into products are guided in a substantially horizontal posture by the sheet conveyance downstream portions (parallel portions) of the first and second support guides 68 and 69 on the left and right sheets in FIGS. And discharged forward. On the other hand, unnecessary intermediate divided paper G2 generated between the left and right rotary blades 51a, 51b, 52a, 52b is guided downward and discharged by the first and second discharge guides 81a, 82a, 81b, 82b. The

"Configuring Control Relationships"
In FIG. 5, the upper first blade holding body 41a includes a position detector 100 that detects the position of the upper second rotary blade 52a in the left-right direction W with respect to the upper first rotary blade 51a. By inputting the position information of the rotary blade 52a to the control unit 17 in FIG. 2, the distance in the left-right direction W between the upper first rotary blade 51a and the upper second rotary blade 52a is detected. The detected numerical value of the interval is displayed, for example, on the operation panel 7 of FIG. 1 or a display unit provided on the paper slitter 22. As the position detector 100, a linear scale, a potentiometer, etc. can be used in addition to a distance measuring sensor using laser or LED light. The position detector 100 may be installed at an appropriate place according to the characteristics of the position detector. The place to do is not limited to the upper blade holder 41a.

  In addition to using the position sensor 100, the operation panel 7 may be provided with an input unit for inputting the interval between the rotary blades, and the input value may be displayed on the operation panel 7.

  Further, as shown in FIG. 3, when two slitters 22 are provided in one slit processing unit 14, the minimum interval in the left-right direction of the two slitters 22, for example, the two slitters 22 is provided. The width between the edges of the member that protrudes most to the other paper slitter side, such as the head of the bolt or the fixed piece 75, is set to the minimum limit interval, and always the both sheet slitters exceed the minimum limit interval. The movement of each sheet slitter 22 in the left-right direction can be adjusted so that 22 is separated. The minimum limit interval is, for example, about 2 to 3 mm.

[Effects of the embodiment]
(1) The paper slitter 22 has a first rotary blade 51a, 51b and a second rotary blade 51a capable of adjusting the position in the left-right direction (paper counterclaim width direction) W relative to the first rotary blades 51a, 51b. 52b, when the paper N is divided into unnecessary intermediate divided paper G2 and product divided paper G on both sides thereof, only by adjusting the position of the second rotary blades 52a, 52b, The dimension of the intermediate divided paper G2 in the left-right direction (paper conveyance width direction) W can be set easily and accurately. In addition, when changing the width of the intermediate divided paper G2, it is not necessary to replace the paper slitter with a different size, so the number of parts can be reduced, storage space for replacement parts is not required, and maintenance of replacement parts is also possible. It becomes unnecessary. Further, when only the cutting position of the sheet is different in the width direction without changing the width of the intermediate divided sheet, it is only necessary to move the sheet slitter 22 in the sheet conveyance width direction. There is no deviation in the distance between the two rotary blades 52a and 52b.

(2) Since the second cutting unit 42 includes the paper second support guide portion 69 that moves in the left-right direction together with the second rotary blades 2a and 52b on the side opposite to the intermediate divided paper forming region, the second rotary blade Even if 52 a and 52 b are moved and adjusted with respect to the first rotary blades 51 a and 51 b in the left-right direction W, the divided paper G for product divided by the second rotary blades 52 a and 52 b is separated by the paper second support guide portion 69. It can always be smoothly and smoothly sent to the next process.

(3) Since the first discharge guides 81a and 81b are provided between the first rotary blades 51a and 51b and the second rotary blades 52a and 52b, the first rotary blades 51a and 51b and the second rotary blade 52a, The unnecessary intermediate divided sheet G2 generated between the sheets 52b is immediately discharged downward by the first discharge guides 81a and 81b immediately after cutting.

(4) Since the second discharge guides 82a and 82b are provided in the second cutting unit 42, the second discharge guides 82a and 82b cooperate with the first discharge guides 81a and 81b to reliably transfer the intermediate divided sheet G2. It can be discharged downward.

(5) The display unit provided on the operation panel 7 or the paper slitter 22 can display the distance in the left-right direction W between the first rotary blades 51a and 51b and the second rotary blades 52a and 52b. The person can easily check the set dimension of the intermediate divided sheet G2 in the sheet conveyance width direction on the display unit.

(6) Since the first rotary blades 51a and 51b of the right sheet slitter 22 are disposed closer to the right retracted position (right home position HPR) than the second rotary blades 52a and 52b, the right home position The cutting position by the paper slitter 22 is set on the basis of the position of the first rotary blades 51a and 51b of the HPR, and the left and right width of the intermediate divided paper G2 is based on the first rotary blades 51a and 51b on the fixed side, The width and cutting position of the intermediate divided sheet G2 can be set accurately. Of course, the left side paper slitter 22 also has the same effect as the right side paper slitter 22, although the left and right sides are reversed.

(7) In a structure in which, for example, two sheet slitters 22 are provided in one slit processing unit 14, a minimum limit interval (2 mm to 3 mm) in the left-right direction of both sheet slitters 22 is set, and from this minimum limit interval Since both the sheet slitters 22 are controlled so as not to approach each other, it is possible to prevent the two sheet slitters 22 from colliding while adjusting the position of the sheet slitter 22 in the left-right direction.

(8) When the right paper slitter 22 is moved to the right home position HPR (right retracted position), the lower rotary blades 51b are automatically made to the upper rotary blades 51a and 52a by the cutting release mechanism 83. , 52b are separated from each other in the left-right direction, so that deterioration of the rotary blades 51a, 51b, 52a, 52b can be prevented even when the paper slitter is not used for a long period of time. The left paper slitter 22 also has the same effect.

[Modification of First Embodiment]
(1) FIG. 10 is a modification of the first embodiment of the paper slitter 22, and the main body portion 60 of the lower first blade holding body 41b is also provided with a lower moving nut 48. The moving nut 48 is screwed into the lead screw 28b disposed on the lower side. The lower lead screw 28b rotates in synchronization with the upper lead screw 28a so that the lower first blade holding body 41b moves in the left-right direction at the same speed as the upper first blade holding body 41a. It has become.

  Furthermore, the lower second blade holding body 42b of the second cutting unit 42 is fitted to a guide shaft 93 that extends substantially in the left-right direction W of the support frame body 21 (FIG. 3) so as to be movable in the left-right direction. By removing the adjusting bolt 56 of the interval adjusting mechanism 55 from the female screw hole 56b of the upper second blade holder 42a, only the second cutting unit 42 is moved to the retracted position that is disengaged from the side edge of the paper in the paper conveyance width direction. It can be moved. According to this, a single slit line can be formed like a normal slitter by using only the first rotary blades 51a and 51b.

(2) FIGS. 11 and 12 show modifications of the outer second discharge guide 82a. The outer second discharge guide 82a is divided into upper and lower members 82a1 and 82a2, and the upper member 82a1 is a support shaft 95. Are supported so as to be swingable in the vertical direction. By a first position switching mechanism such as an operation lever (not shown), the upper member 82a1 is moved to an upper non-guide position (position in FIG. 12) that does not contact the paper, and a lower guide position that contacts the paper and guides downward ( It is possible to switch between the positions shown in FIG.

  When the unnecessary intermediate divided sheet G2 is generated, as shown in FIG. 11, the upper member 82a1 is rotated to the lower guide position to guide the unnecessary intermediate divided sheet G2 downward. On the other hand, when the unnecessary intermediate divided sheet G2 does not occur, the upper member 82a1 is rotated to the upper non-guide position as shown in FIG.

  Although not shown, the outer first discharge guide 81a provided in the first cutting unit 41 is also divided into upper and lower parts, like the outer second discharge guide 82a, by a second position switching mechanism such as an operation lever. The second upper member can be configured to rotate between an upper non-guide position and a lower guide position.

[Second Embodiment]
17 and 18 show a second embodiment of the present invention, and the paper slitter 22 includes a pair of upper and lower first rotary blades 51a and 51b and a pair of upper and lower second rotary blades 52a and 52b. However, the structure of the blade holder is different from that of the first embodiment. In addition, the same code | symbol is attached | subjected to the components of the structure similar to 1st Embodiment.

  In FIG. 17, the paper slitter 22 includes an upper blade holder 241a and a lower blade holder 241b. The upper and lower blade holders 241a and 241b include moving nuts 248a and 248b, respectively, and the moving nuts 248a and 248b. Are screwed into the upper and lower moving lead screws 28a and 28b, respectively. The upper and lower lead screws 28a and 28b are rotated synchronously by an appropriate interlocking mechanism such as a belt.

 The upper blade holder 241a is formed in an open U shape, and a blade drive shaft 226 is rotatably supported between the left and right side walls. The blade drive shaft 226 is connected to the drive motor M through an appropriate interlocking mechanism. A boss portion 51c of the upper first rotary blade 51a is supported on the side wall of one of the upper blade holders 241a (right side in the drawing) so as to be rotatable and not movable in the left-right direction. The boss portion 51 c of the upper first rotary blade 51 a is key-coupled to the blade drive shaft 226 so that it can rotate integrally with the blade drive shaft 226 and can move in the left-right direction W with respect to the blade drive shaft 226. It is mated.

  The boss portion 52d of the upper second rotary blade 52a is supported by the movable holder 242 disposed between the left and right side walls of the upper blade holder 241a so as to be rotatable and immovable in the left-right direction with respect to the movable holder 242. Has been. Furthermore, the upper second rotary blade 52 a is key-coupled to the blade drive shaft 226, can be rotated integrally with the blade drive shaft 226, and is fitted to the blade drive shaft 126 so as to be movable in the left-right direction W. .

  The movable holding body 242 is connected to the other side wall (left side) of the upper blade holding body 241 a via a distance adjusting mechanism 55 having an adjusting bolt 56. The adjustment bolt 56 is supported on the other side wall of the upper blade holder 241a so as to be rotatable and non-movable in the axial direction. The right end of the adjustment bolt 56 is screwed into the female screw hole 56b of the movable holder 242. ing. That is, by holding and rotating the knob 56a of the adjustment bolt 56, the movable holding body 242 and the upper second rotary blade 52a can be moved in the left-right direction W relative to the upper first rotary blade 51a. It has become. Thereby, the space | interval of the left-right direction of the upper side 1st rotary blade 51a and the upper side 2nd rotary blade 52a is adjusted.

  The lower blade holder 241b is formed in an upper U-shape, and the lower first and second rotary blades 51b and 52b are freely rotatable on the support shaft 245 installed on the left and right side walls. It is mated. The lower first rotary blade 51b is urged toward the lower second rotary blade 52b by the first coil spring 64, whereby the upper end portion of the lower first rotary blade 51b is the upper first rotary blade. It is in contact with the lower end of 51a at a constant pressure. The lower second rotary blade 52b is biased toward the lower first rotary blade 51b by the second coil spring 74, whereby the upper end portion of the lower second rotary blade 52b is moved to the upper second rotation. The blade 52a is in contact with the lower end of the blade 52a at a constant pressure.

  When adjusting the position in the left-right direction W of the entire paper slitter 22, the upper blade holder 241a and the lower holder 241b are integrally moved in the left-right direction W by synchronously rotating the upper and lower lead screws 28a, 28b. To set the desired position in the left-right direction W.

  When adjusting the space between the first rotary blades 51a, 51b and the second rotary blades 52a, 52b in the left-right direction W, the movable holding body 242 and the upper second rotary blade 52a are integrated by rotating the adjustment bolt 56. Move and adjust in the left-right direction W. Since the upper end of the lower second rotary blade 52b is pressed against the upper second rotary blade 52a, the upper second rotary blade 52a moves with the upper second rotary blade 52a kept in contact with the upper second rotary blade 52a. And move in the left-right direction W. In addition, the movable range in the left-right direction of the lower second rotary blade 52 b is defined by the compression stroke of the second coil spring 59. Further, a discharge guide (not shown) for discharging the intermediate divided paper G2 downward may be fixed to the movable holding body 242, or a support shaft (not shown) may be provided to be rotatably supported. Good.

[Third Embodiment]
FIGS. 19 to 21 show a third embodiment of the present invention. In FIG. 19, the lower half of the paper slitter 22 has both the upper first and second rotary blades 51a and 52a from the lower side. A cylindrical common rotary blade receiver 351b that abuts is disposed. Note that the cutting method of the third embodiment is a push-cut type. In addition, the same code | symbol is attached | subjected to components of the structure similar to 1st Embodiment or 2nd Embodiment.

  The common rotary blade receiver 351b is rotatably supported by an upper U-shaped common lower blade holder holding body 313, and a lower movement nut 348b is provided on the lower surface of the blade holder holding body 313. The lower lead screw 28b for moving the slitter is screwed.

  The support structure of the upper first and second rotary blades 51a and 52a will be described. The common support 320 is supported by a guide rod (not shown) so as to be movable in the left-right direction. Is provided with an upper moving nut 348a. The upper moving nut 348 is screwed into an upper lead screw 28a for moving the slitter, and the lead screws 28a and 28b rotate synchronously, whereby the common support 320 and the blade are held. The body 313 moves in the left-right direction at the same speed.

  The common support 320 has a fixed blade holding body 311 fixed to one side in the left-right direction W, and a movable blade holding body 312 arranged on the other side. The movable blade holding body 312 has an interval having an adjustment bolt 56. The adjustment mechanism 55 can be moved close to and away from the common upper holder 320 in the left-right direction W. The adjustment bolt 56 is supported by the movable blade holding body 312 so as to be rotatable and non-movable in the axial direction, and the tip of the adjustment bolt 56 is screwed into the female screw hole 56b of the common support 320. . By rotating the adjusting bolt 56, the movable blade holder 312 moves together with the upper second rotary blade 52a so as to approach and separate in the left-right direction W with respect to the common support member 320 and the fixed blade holder 311.

  In the third embodiment, the upper rotary blades 51a and 52a are in contact with the lower common rotary blade receiver 351b (the state shown in FIG. 19), and the upper rotary blades 51a and 52a are A contact / separation mechanism is provided that can displace between the common rotary blade receiver 351b and a separation position spaced upward.

  The contact / separation mechanism will be described. In FIG. 21, the fixed blade holder 311 is supported so as to be swingable in the vertical direction with respect to the common support 320 via a swing support shaft 321, and is biased downward by a coil spring 328. The upper first rotary blade 51a is pressed against the upper end of the common rotary blade receiver 351b. That is, the first rotary blade 51a is biased to the contact position by the coil spring 328.

  By swinging the fixed holding body 311 upward against the coil spring 328, the upper first rotary blade 51a rises from the contact position and reaches the separated position. In this state of separation, the upper first rotary blade 51a is moved in the left-right direction.

  The movable blade holder 312 shown in FIG. 19 also includes a contact / separation mechanism similar to that of the fixed blade holder 311. The movable blade holder 312 is configured to be swingable in the vertical direction. By swinging the movable blade holding body 312 upward, the upper second rotary blade 52a can be separated from the contact position contacting the upper end portion of the common rotary blade receiver 351b to the upper separation position. In this state of separation, the upper second rotary blade 52a is moved in the left-right direction.

  Cam mechanisms are provided to swing the fixed blade holding body 311 and the movable blade holding body 312, respectively. This cam mechanism includes cams 325 and 326 that come into contact with the cam follower portions 311 a and 312 a of the fixed blade holding body 311 and the movable blade holding body 312. The cams 325 and 326 are fitted to the drive shaft 251 such that the cams 325 and 326 are key-coupled to the drive shaft 251 so that the cams 325 and 326 can rotate integrally with the drive shaft 251 and move in the left-right direction integrally with the common support 320. Yes.

  In FIG. 21, the cam 325 for the fixed blade holder is in contact with the cam follower 311a of the fixed blade holder 311 from the rear side, and the cam 325 is rotated by the rotation of the drive shaft 251 so that the cam follower 311a is moved forward. , The fixed blade holder 311 is rotated around the support shaft 321 against the coil spring 328, and the first rotary blade 51a is separated from the common rotary blade receiver 351b to the upper spaced position.

  Although not shown, the movable blade holder 312 of FIG. 19 is also pressed against the upper end of the common rotary blade receiver 351b by a coil spring, and the movable blade holder 312 is adjusted by rotating the cam 326 for the movable blade holder. By rotating around the bolt 56, the second rotary blade 52a can be separated upward from the common rotary blade receiver 351b.

  In FIG. 19, when adjusting the space | interval of the left-right direction W of the 1st rotary blade 51a and the 2nd rotary blade 52a, the 2nd rotary blade 52a is first rocked by swinging the movable blade holding body 312 upwards. Move away from the contact position that contacts the upper end of the common rotary blade receiver 351b to the upper separation position, and then rotate the adjustment bolt 56 to move and adjust the movable blade holder 312 and the upper second rotary blade 52a in the left-right direction. To do.

  In the third embodiment, as described with reference to FIGS. 11 and 12, the outer discharge guides 81a and 82a are configured to be displaceable between the non-guide position and the guide position. The two-position switching mechanism can be switched. In this case, the second position switching mechanism and the aforementioned contact / separation mechanism can be interlocked. The contact / separation mechanism provides the cam 325 and the cam 326 so as to have a phase difference in the mounting angle of the cam 325 and the cam 326 with respect to the drive shaft 251, thereby separating only the upper second rotary blade 52 a to the separation position. It is possible. That is, when the upper second rotary blade 52a is displaced to the upper separation position using the contact / separation mechanism, the outer first, second, and second positions are switched by the first and second position switching mechanisms. 2 The discharge guides 81a and 82a are switched from the guide position to the non-guide position. As a result, it is possible to perform cutting similar to the conventional one using one slit line by the first rotary blades 51a and 51b, and it is possible to send the cut divided paper as a product to the next process.

  FIG. 20 shows a state in which the distance between the upper and lower first and second rotary blades 51a and 52a in the left-right direction W is increased from the state shown in FIG.

[Modification of Third Embodiment]
22 and 23 show a modification of the third embodiment, and the structure of the lower common rotary blade receiver 351c is different from the common rotary blade receiver 351b of FIG. Other structures are the same as those of the third embodiment, and the same components are denoted by the same reference numerals.

  In FIG. 22, a plurality of annular grooves 355 are provided at predetermined intervals in the left-right direction on the cylindrical outer peripheral surface of the common rotary blade receiver 351 c, and an upper side is provided on the side surface in the left-right direction of each annular groove 355. The lower ends of the rotary blades 51a and 52a are in contact with the lateral sides.

  The modified example of the third embodiment is not a so-called push-off method, and is similar to the first and second embodiments, by rubbing the upper rotary blades 51a and 52a and the side surface of the groove 355, thereby making the paper Is cut. In this case, the blade tips of the upper rotary blades 51a and 52a do not come into contact with the cylindrical outer peripheral surface of the common rotary blade receiver 351c, and wear of the upper rotary blades 51a and 52a is reduced.

  In order to widen the left-right distance between the upper first rotary blade 51a and the upper second rotary blade 52a, the upper second rotary blade 52a is moved to the left as shown in FIG. It abuts on the groove 355. In this case, the upper second rotary blade 52a is moved up and down using the contact / separation mechanism described in FIG.

[Fourth Embodiment]
24 and 25 show a fourth embodiment of the present invention, in which the first rotary blades 51a and 51b and the second rotary blades 52a and 52b are arranged shifted in the paper transport direction X1, Other structures are the same as those of the second embodiment (FIGS. 17 and 18), and the same components are denoted by the same reference numerals. The aforementioned blade drive shaft 226 is divided into front and rear blade drive shafts 226a and 226b. Of course, the support shaft 245a of the lower first rotary blade 51b and the support shaft 245b of the lower second rotary blade 52b are also shifted from each other in the paper transport direction.

  According to the fourth embodiment, the cutting operation by the upper and lower first rotary blades 51a and 51b and the cutting operation by the upper and lower second rotary blades 52a and 52b are performed in terms of time and distance in the paper transport direction X1. It is carried out in a shifted state. Thus, the first rotary blades 51a and 51b and the second rotary blades 52a and 52b do not act on the same place in the left-right direction at the same time, thereby reducing the conveyance resistance and preventing paper jam.

[Modification of discharge guide]
26 and 27 are modifications of the movable outer second discharge guide 82a described with reference to FIGS. In the modified example, the upper member 82a1 includes a pair of elongated holes 400 in the upper end portion, and a pair of front and rear pins 401 provided on the upper second blade holding body 42a are provided in the elongated holes 400. Is engaged. That is, the upper member 82a1 is actuated by the second position switching mechanism and is guided by the pin 401, so that it can move between the upper non-guide position and the lower guide position. In addition, since the elongated hole 400 is formed in a U-shape, the upper member 82a1 does not contact the upper second rotary blade 52a even at the upper non-guide position. Although not shown, the outer first discharge guide 81a has the same structure.

[Another modification of the discharge guide]
FIG. 28 shows the operation of the cutting release mechanism 83 and the outer and inner second discharge guides 82a and 82b in the paper slitter 22 having the cutting release mechanism 83 that can separate the upper and lower second rotary blades 52a and 52b. The operation is linked.

  The cutting release mechanism 83 has the same structure as in FIG. 4 and includes a cam shaft 85, a cam 86, a cam follower 87, a bolt contact portion 88 of the cam shaft 85, and a push-in bolt 89. . When the inclined surface 88a of the bolt contact portion 88 contacts the tip of the push-in bolt 89, the bolt contact portion 88 is pushed up, the cam shaft 85 and the cam 85 rotate in the arrow B1 direction, and the cam follower 87 contacts. The portion 87a is pushed forward, and the cam follower 87 is rotated around the support shaft 90 in the B2 direction. Accordingly, the lower second rotary blade 52b is pulled leftward from the upper second rotary blade 52a.

  The outer second discharge guide 82a and the inner second discharge guide 82b are integrally connected at their lower ends by a U-shaped connecting portion 370 in plan view, and the rear lower end of the inner second discharge guide 82b. The part is freely rotatable around a rotation axis through a rotation shaft 371. The inner second discharge guide 82b is urged rearward by a suitable elastic member, and the rear end edge of the inner second discharge guide 82b is in contact with the cam 86 from the front. That is, when the cam 86 rotates in the direction of the arrow B1, when the lower second rotary blade 52b is moved away from the upper second rotary blade 52a, at that time, the inner second discharge guide 82b is pushed forward and around the rotation shaft 371. By rotating forward, the upper end portion of the outer second discharge guide 82a can be retracted below the contact portions of the upper and lower second rotary blades 52a and 52b. As a result, the divided sheets passing between the upper and lower second rotary blades 52a and 52b while being cut by the upper and lower first rotary blades (not shown) are conveyed forward while maintaining a substantially horizontal state.

14 Slit processing unit 22 Paper slitter 28, 48 Lead screw, moving nut (moving mechanism)
28a, 28b, 248a, 248b Lead screw, moving nut (moving mechanism)
41 First cutting unit 41a Upper first blade holder 41b Lower first blade holder 42 Second cutting unit 42a Upper second blade holder 42b Lower second blade holder 51a Upper first rotary blade 51b Lower first 1 rotary blade 52a Upper second rotary blade 52b Lower second rotary blade 55 Spacing adjustment mechanism 56 Adjustment bolt (component of spacing adjustment mechanism)
68 First support guide portion 69 Second support guide portion 81a Outer first discharge guide 81b Inner first discharge guide 82a Outer second discharge guide 81b Inner second discharge guide 83 Cutting release mechanism 241a Upper blade holder 241b Lower blade holder Body 325, 326 cam (component of contact / separation mechanism)
348a, 348b Moving nut

Claims (18)

A first cutting unit having a pair of first rotary blades for cutting the paper along the paper transport direction and a first blade holder for rotatably supporting the first rotary blade;
A second cutting unit having a pair of second rotary blades for cutting the paper along the paper transport direction and a second blade holder for rotatably supporting the second rotary blade;
A moving mechanism for moving the first cutting unit in the paper conveyance width direction;
The second blade holder can be moved closer to and away from the first blade holder in the paper conveyance width direction so as to increase or decrease the distance between the first rotary blade and the second rotary blade in the paper conveyance width direction. A paper sheet slitter comprising: an interval adjusting mechanism coupled to the paper slitter. The paper slitter according to claim 1.
Among the divided sheets divided into a plurality of sheets by the second rotary blade, a support guide portion that supports the divided paper located on the far side in the paper transport width direction from the first rotary blade from the lower side, the second blade holding A paper slitter provided on the body. A pair of first rotary blades for cutting the paper along the paper transport direction;
A pair of second rotary blades for cutting the paper along the paper transport direction;
A blade holder that rotatably supports the first rotary blade and the second rotary blade and is movable in the paper conveyance width direction;
A paper slitter, comprising: an interval adjusting mechanism that moves the second rotary blade so as to be close to and away from the first rotary blade in the paper paper width direction. A cylindrical common rotary blade receiver having a certain length in the paper conveyance width direction;
A first rotary blade that contacts the outer peripheral surface of the common rotary blade receiver and cuts the paper along the paper transport direction;
A second rotary blade that contacts the outer peripheral surface of the common rotary blade receiver and cuts the paper along the paper transport direction;
A blade holder that rotatably supports the first rotary blade and the second rotary blade and is movable in the paper conveyance width direction;
A blade holder holding body that rotatably supports the common rotary blade holder and is movable in the paper conveyance width direction;
A paper slitter, comprising: an interval adjusting mechanism that moves the second rotary blade so as to be close to and away from the first rotary blade in the paper conveyance width direction. The paper slitter according to any one of claims 1 to 4,
The divided sheets after cutting are discharged downward from the cutting position by the first rotating blade to the second rotating blade side in the sheet conveying width direction and downstream from the cutting position by the first rotating blade in the sheet conveying direction. A paper slitter provided with a first discharge guide. The paper slitter according to claim 5,
A sheet slitter comprising a first position switching mechanism for displacing the first discharge guide between a guide position where the first discharge guide is in contact with the divided sheet and guided downward and a non-guide position where the first discharge guide is not in contact with the divided sheet. . The paper slitter according to any one of claims 1 to 6,
The divided sheets after cutting are discharged downward from the cutting position by the second rotating blade to the first rotating blade side in the sheet conveying width direction and downstream from the cutting position by the second rotating blade in the sheet conveying direction. A second discharge guide is provided,
The second discharge guide, together with the second rotary blade, is movable in the paper transport width direction with respect to the first rotary blade. The paper slitter according to claim 7,
A sheet slitter comprising a second position switching mechanism for displacing the second discharge guide between a guide position where the second discharge guide contacts the divided sheet and guides downward, and a non-guide position where the second discharge guide does not contact the divided sheet. . The paper slitter according to claim 8,
A contact / separation mechanism for displacing the second rotary blade between a contact position for cutting the paper and a separation position for cutting the paper;
The second position switching mechanism is a paper slitter that displaces the second discharge guide in conjunction with the displacement of the second rotary blade by the contact / separation mechanism. In the paper processing apparatus provided with the paper slitter according to any one of claims 1 to 9,
The paper slitter includes: a use area in a paper conveyance width direction where the first rotary blade and the second rotary blade are in contact with the paper; and a retreat position located outward from the paper side edge in the paper conveyance width direction. A paper processing device that can move in the paper transport width direction. In the paper processing apparatus provided with the paper slitter according to claim 10,
The paper processing apparatus, wherein the first rotary blade is located closer to the retracted position in the paper transport width direction than the second rotary blade. In the paper processing apparatus according to claim 10 or 11,
An intermediate divided paper width detector for detecting an intermediate divided paper width between the first rotary blade and the second rotary blade in the paper conveyance width direction;
And a display unit that displays the intermediate divided paper width detected by the intermediate divided paper width detection unit. In the paper processing apparatus according to claim 10 or 11,
An input unit for inputting an intermediate divided paper width between the first rotary blade and the second rotary blade in the paper width direction;
A sheet processing apparatus comprising: a display unit configured to display the input intermediate divided sheet width. The paper processing apparatus according to claim 12 or 13,
The paper processing apparatus, wherein the display unit is disposed in the paper slitter. The paper processing apparatus according to claim 12 or 13,
The paper processing apparatus, wherein the display unit is disposed on an operation panel of the paper processing apparatus. The paper processing apparatus according to any one of claims 10 to 15,
A plurality of the paper slitters are arranged side by side so as to be movable in the paper conveyance width direction,
A moving mechanism for moving each of the paper slitters in the paper width direction;
A control unit for controlling the movement of each of the paper slitters,
The paper processing apparatus, wherein the control unit controls movement of each paper slitter so that a width of adjacent paper slitters in a paper conveyance width direction is equal to or greater than a preset minimum interval. In the paper processing apparatus provided with the paper slitter as described in any one of Claims 1 thru | or 3,
The paper slitter includes: a use area in a paper conveyance width direction where the first rotary blade and the second rotary blade are in contact with the paper; and a retreat position located outward from the paper side edge in the paper conveyance width direction. It is possible to move in the paper conveyance width direction between
The paper slitter includes a cutting release mechanism that detaches the pair of first rotary blades and the pair of second rotary blades so that they cannot be cut.
In the vicinity of the retracted position in the paper conveyance width direction, when the paper slitter moves to the retracted position, the pair of rotary blades are brought into a cutting release state by abutting against an actuated portion of the cutting release mechanism. A paper processing apparatus provided with an action section. In the control method of the paper processing apparatus according to any one of claims 10 to 17,
When setting the width of the intermediate divided paper generated between the first rotary blade and the second rotary blade,
The position in the paper width direction of the first rotary blade in the retracted position is set as a reference position,
First, a position in the paper width direction of the first rotary blade with respect to the reference position is determined,
Next, a control method of the paper processing apparatus, wherein the cutting position of the second rotary blade with respect to the determined cutting position of the first rotary blade is determined.

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