JP5389512B2 - Paper sheet cutting device and finisher device using the same - Google Patents

Description

  The present invention relates to a cutting device that cuts paper sheets held on a paper platform, for example, aligns sheets formed with an image by an image forming apparatus in a bundle shape, and sets them in a predetermined cutting line. The present invention relates to an improvement of a cutting apparatus that performs cutting with a printer.

  In general, this type of cutting apparatus is widely used as an apparatus for setting paper sheets on a paper table and cutting a predetermined portion thereof. For example, a sheet fed from a printer device or the like is aligned in a bundle and bound in a bookbinding manner, and a trimming device that trims and aligns the peripheral edges of the bound sheets or a sheet from an image forming device is halved. It is known as a cutting device that cuts in half.

  Conventionally, as such a cutting apparatus, for example, as disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 10-138194), a cutting apparatus that sets a single sheet on a table and cuts it, and Patent Document 2 (Japanese Patent Laid-Open No. 2003-71780) discloses a cutting apparatus that sets a large number of sheets in a bundle and cuts them at once. And as a cutting method, when cutting with a cutting blade (rotary blade) that moves from one end of the sheet to the other end as in Patent Document 1, and flat plate cutting from above the bundle-shaped sheet as in Patent Document 2 What cuts when a blade (guillotine blade) descends is known.

  Moreover, when cutting a large number of paper sheets at once with a flat cutting blade (guillotine blade) that moves up and down in the thickness direction as in Patent Document 2, it is necessary to increase the shear energy required for cutting. There is. This is for cutting the paper sheet with its striking force by lowering the cutting blade vigorously at a high speed. In this case, the apparatus must be constructed robustly and the drive device must be large.

  Similarly, in Patent Document 3 (Japanese Utility Model Publication No. 47-8308) and Patent Document 4 (Japanese Utility Model Publication No. 52-1034889), a device for miniaturizing a drive mechanism for moving a plate-shaped cutting blade up and down is described. Has been proposed. In this document, it is proposed that the cutting blade is oscillated while the plate-like cutting blade is supported by a pair of left and right oscillating arms. In this way, when the cutting blade that moves up and down is swung by a pair of arm members and cut, the length of the pair of swinging arms is varied to cut the inclination of the cutting blade with respect to the sheet surface. For example, document 4 proposes to reduce the cutting force.

  When such a movable cutting blade is moved up and down to cut a sheet bundle, a problem arises in the engagement between the fixed blade and the movable blade arranged on the paper platform side. In other words, if a backlash occurs in one of the movable blade and the fixed blade, the paper sheet cannot be cut or the cut surface of the paper sheet is distorted. In order to guarantee a close engagement relationship between the movable blade and the fixed blade, for example, Japanese Patent Application Laid-Open No. 62-159299 proposes disposing the movable blade and the fixed blade so as to intersect each other.

  This Patent Document 5 discloses a cutting structure in which a pair of upper and lower blade edges cross each other in a hook shape so that the upper and lower blades are reliably meshed, and one of them is gradually moved backward as the cutting progresses. In this publication, one of the cutting blades is slidably fitted to a rod-shaped shaft, and this cutting blade is elastically pressed against the other cutting blade by a spring.

Japanese Patent Laid-Open No. 10-138194 JP 2003-71780 A Japanese Utility Model Publication No. 47-8308 Japanese Utility Model Publication No. 52-1034889 Japanese Utility Model Publication No. 62-159299

  As described above, it is known in Patent Documents 2 to 4 and the like to provide a fixed cutting blade on the paper mounting side when cutting a sheet bundle with a flat movable cutting blade. In this case, it is well known that if there is a discrepancy due to rattling between the fixed blade and the movable blade, cutting is impossible and cutting jam occurs. In this case, since the movable blade is generally elastically pressed against the fixed blade, a guide surface is provided so as to be flush with the cutting surface of the fixed blade, and the movable blade is moved upward and downward along the guide surface. doing. For this reason, a strong urging force is applied to the movable blade, which causes problems such as frictional force between the guide surface, wear, and corrosion. This causes failures such as blade spillage due to biting between the movable blade and the fixed blade. Is a problem.

  Therefore, in order to solve the engagement error between the movable blade and the fixed blade, Patent Document 5 discloses a technique in which the fixed blade and the movable blade intersect at a predetermined angle and one of them is gradually moved backward. A reliable cutting meshing relationship is obtained by the intersection of the fixed blade and the movable blade. However, conventionally, a retreating blade (movable blade in Document 5) is fitted with a sleeve integrally formed with the movable blade on the rotating shaft.

  In other words, the movable blade is fitted to the rotating shaft with a sleeve so as to maintain a predetermined angle, and at the same time, the sleeve is moved and displaced in the axial direction. For this reason, it is good when the cutting width is small, but when the width is wide like a sheet bundle, the movable blade is cantilevered by the bearing, and smooth cutting operation cannot be obtained due to variations in component accuracy. At the same time, the frictional load generated in the bearing portion (the sleeve of Patent Document 5) is increased, and the loss of the driving mechanism causes the apparatus to be enlarged, so that it is not adopted as a paper sheet cutting apparatus.

  In the present invention, when cutting a paper sheet with a fixed cutting blade and a movable cutting blade, the cutting blades can be surely engaged with each other and cut sharply, and at the same time, the driving load for this cutting is reduced and the apparatus is reduced. The main issue is to provide a paper sheet cutting apparatus that can be manufactured in a small, compact and inexpensive manner. Another object of the present invention is to provide a paper sheet cutting apparatus that can easily convey and position a paper sheet bundle by disposing a fixed cutting blade on the paper table on which the paper sheet bundle is placed. .

  In order to achieve the above object, the present invention forms the movable cutting blade into a blade shape inclined at a predetermined angle with respect to the sheet surface so that the movable cutting blade is gradually cut from one end to the other end. Inclined by a predetermined angle with respect to the cutting line so as to cross the fixed cutting blade, it is supported on the apparatus frame. An urging means is provided for supporting the movable cutting blade on the frame so as to be displaceable in a direction perpendicular to the cutting surface and for pressing the movable cutting blade toward the fixed cutting blade. Therefore, this biasing means is composed of a pair of left and right spring means for applying elastic force to the cutting start point side and the cutting end point side of the movable cutting blade, and the movable cutting blade moves backward against the biasing means against the fixed cutting blade side. It is characterized in that cam means is provided.

  The structure will be described in detail. A paper table 15 for placing and supporting paper sheets, press means 21 for pressing and holding the paper sheets on the paper table, and paper sheets on the paper table. A flat plate-shaped movable cutting blade 25 movable in the vertical cutting direction with respect to the paper sheet surface and a predetermined shape with respect to the paper sheet surface so as to gradually cut the paper sheet formed on the movable cutting blade from one end to the other end. The cutting edge 25c inclined at an angle, a flat plate-shaped fixed cutting blade 28 that is disposed on the paper platform side and is in sliding contact with the cutting edge of the movable cutting blade, and the cutting so that the movable cutting blade intersects the fixed cutting blade And an apparatus frame 10 that is supported at an angle with respect to the line.

  The movable cutting blade is provided with urging means 16R and 16L for supporting the device frame so as to be displaceable in a direction perpendicular to the cutting surface of the paper sheet and for repressing the fixed cutting blade. The means comprises a pair of left and right spring means for applying elastic force to the cutting start point side and the cutting end point side of the movable cutting blade, respectively, and the movable cutting blade is opposed to the biasing means on the fixed cutting blade side. Thus, the cam means 32 for moving backward is provided.

  The present invention is arranged so that a movable cutting blade for gradually cutting a paper sheet from one end to the other end intersects with a fixed cutting blade disposed on the paper platform side, and the cutting start point side of this movable cutting blade Since the cutting end point side is elastically pressed to the fixed cutting blade side by a pair of spring means and the movable cutting blade is moved backward on the fixed cutting blade side, the following effects are produced.

  In the present invention, since the movable cutting blade is inclined at a predetermined angle with respect to the cutting line so as to intersect the fixed cutting blade and moves up and down in the cutting direction, the movable cutting blade and the fixed cutting blade are reliably engaged with each other. The cutting edges are not separated and cannot be cut. Therefore, even if the cutting edge is worn out and the cutting force is inferior, cutting is not possible and the life of the movable cutting blade can be increased.

  Further, the intersecting state of the movable cutting blade and the fixed cutting blade has a simple structure, and the cut surface quality can be kept constant without largely changing the intersecting angle between the initial cutting and the final cutting. In other words, this intersecting state is to move the movable cutting blade backward by the elastic force acting on the movable cutting blade on the cutting start point side and the cutting end point side and the cam means on the fixed cutting blade side. Cutting is performed at a substantially constant angle from the initial stage to the end of cutting. At the same time, the movable cutting blade is moved backward by the cam means according to the cutting depth, and the frictional load that makes surface contact with the paper sheet cutting surface can be reduced.

  Further, in the present invention, the cam means for moving the movable cutting blade backward is constituted by a sliding contact surface of the fixed cutting blade and the movable cutting blade disposed on the cutting end side, and at least one of the sliding contact surfaces is an inclined cam surface. It can be manufactured inexpensively with a simple structure and few failures.

The perspective view which shows the whole structure of the paper sheet cutting apparatus concerning this invention. (A) It is explanatory drawing which shows the front structure of the apparatus of FIG. 1, (b) is attachment explanatory drawing of a cutting blade. (A) The longitudinal cross-sectional structure figure of the apparatus of FIG. 1 is shown, (b) is A part detailed drawing, (c) shows B detailed drawing, (d) shows C detailed drawing. Explanatory drawing which shows the back surface structure of the apparatus of FIG. Explanatory drawing which shows the structure of the press means in the apparatus of FIG. Explanatory drawing of the operation state of a cam means, (a) The cutting start point of a movable cutting blade is shown, (b) shows the cam operation state of (a). Explanatory drawing of the operation state of a cam means, (a) The cutting middle point of a movable cutting blade is shown, (b) shows the cam operation state of (a). Explanatory drawing of the operation state of a cam means, (a) The cutting | disconnection end point of a movable cutting blade is shown, (b) shows the cam operation state of (a). Explanatory drawing of the cutting state of the paper sheets in the apparatus of FIG. 3A and 3B show the embodiment of the cam means different from FIG. 3, (a) and (c) show the driving state of the movable cutting blade, and (b) and (d) show the structure of the inclined cam surface. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration explanatory diagram of a finisher device incorporating a paper sheet cutting device according to the present invention.

  The present invention will be described in detail below based on the preferred embodiments shown in the drawings. FIG. 1 is a perspective view showing the overall configuration of a sheet bundle cutting device (trimmer unit) according to the present invention, and FIG. 2 is a front view thereof. FIG. 3 is a longitudinal sectional view of the apparatus shown in FIG. 1, and FIG. 4 is an explanatory view showing the rear structure of the apparatus. FIG. 5 is an explanatory diagram of the configuration of the pressing means.

  A paper sheet bundle cutting apparatus (trimmer unit) A shown in FIG. 1 includes a paper table 15 for loading and supporting paper sheets P, a press means 20 for pressing and holding the paper sheets P on the paper table, and a paper sheet. The movable cutting blade 25 cuts the leaves P along a predetermined cutting line CL, and a fixed cutting blade 28 provided integrally with the paper mount 15. These paper table 15, pressing means 20, and movable cutting blade 25 are attached to an apparatus frame (base plate) 10. Each configuration will be described below.

[Basic configuration]
First, the basic configuration of the present invention will be described. As shown in FIG. 1, the sheet bundle fed to the paper platform 15 is cut along a preset cutting line CL with a fixed cutting blade 28 and a movable cutting blade 25 formed in a flat plate shape. At this time, the blade edge of the movable cutting blade 25 is also inclined at a predetermined angle with respect to the sheet surface so that the sheet bundle is gradually cut from one end to the other end. That is, the movable cutting blade 25 is inclined by a predetermined angle α (shown in FIG. 2, hereinafter referred to as “shear angle”) in the cutting direction (Z direction in the drawing). The fixed cutting blade 28 is fixed integrally to the apparatus frame (base plate) 10 together with the paper platform 15, and the movable cutting blade 25 moves up and down in the cutting direction (Z direction). As a result, the sheet bundle on the paper platform 15 is gradually cut from the cutting start point S1 at the left end of FIG. 2 toward the cutting end point S2.

  The movable cutting blade 25 is inclined at a predetermined angle with respect to the cutting line CL so as to intersect the fixed cutting blade 28 integral with the paper platform 15. That is, the movable cutting blade 25 forms a predetermined angle β (shown in FIG. 2, which is hereinafter referred to as “intersection angle”) in the Y direction of FIG. As a result, the movable cutting blade 25 is inclined at the intersecting angle β with respect to the fixed cutting blade 28 arranged so as to coincide with the cutting line CL of the sheet bundle, and the two cutting edges intersect.

  Therefore, the movable cutting blade 25 is supported between the apparatus frame (base plate) 10 and the pressing member 19 so as to be displaceable in a direction orthogonal to the cutting end surface of the paper sheet P (Y direction in the drawing). At the same time, a pair of left and right urging means 16R and 16L for applying elastic pressure to the cutting start point S1 side and the cutting end point S2 side of the movable cutting blade 25 are provided. As a result, the movable cutting blade 25 is elastically pressed against the base plate 10 by the urging means 16R and 16L, and can be displaced (moved) in a direction (Y direction in the drawing) perpendicular to the cutting end surface against this urging force.

  In this way, the movable cutting blade 25 intersects the fixed cutting blade 28 fixed together with the paper mount 15 at the intersecting angle β, and the movable cutting blade 25 having the shear angle α is moved to the cutting depth (the movement of the cutting edge in the Z direction in FIG. 1). Cam means 32 for moving the movable cutting blade 25 backward (displaces) against the urging means 16R and 16L according to the amount). The cam means 32 is moved by the movement of the movable cutting blade 25 in the cutting direction (Z direction), the sliding contact surface 25x of the movable cutting blade side (movable cutting blade 25 or blade receiving holder 25h integral with this), and the fixed blade side. It is arranged on at least one of the sliding contact surfaces 15x of the fixed cutting blade 28 or the paper platform 15 or the apparatus frame 10 integrated therewith. This cam means 32 is constituted by an inclined cam surface on which the movable cutting blade 25 is displaced backward in accordance with the cutting depth (movement in the Z direction).

  The movable cutting blade 25 arranged so as to intersect with the fixed cutting blade 28 (intersection angle β) in the above-described configuration gradually moves backward along the inclined cam surface 32 according to the cutting direction movement. Then, the paper sheet P fed to a predetermined position on the paper table 25 and pressed and held by the pressing means 20 is fixed to the other end (S2) from one end (S1) by the fixed cutting blade 28 and the movable cutting blade 25 that intersect each other. It is cut gradually toward.

  As described above, according to the present invention, when the movable cutting blade 25 intersects the fixed cutting blade 28 and is gradually cut from one end to the other end of the paper sheet P, the movable cutting blade 25 is changed according to the cutting depth. Move backward (in the direction of the cut end face). For this reason, the paper sheet P only needs to be positioned with reference to a preset cutting line CL on the paper table, and the paper sheet P does not move back and forth in the cutting process, so that the positioning becomes easy.

  At the same time, the movable cutting blade 25 that moves backward according to the cutting depth is biased toward the fixed cutting blade 28 by the biasing means 16R and 16L, and moves backward while securing the crossing angle β by the cam means 32. The support structure of the movable cutting blade is easy, and the drive mechanism has a small friction load.

  More specifically, the above-mentioned shear angle α is set to 8 degrees to 25 degrees, and the above-mentioned crossing angle is set to 0.5 degrees to 1.5 degrees. This is because when the shear angle α is set to 25 ° or more, the shear load increases, and when the shear angle α is set to 8 ° or less, the shear stroke (momentum in the Z direction) of the movable cutting blade increases, and the range is preferably 8 ° to 25 °. It is. Further, when the shear angle α is set to 1.5 ° or more, the amount of the reciprocating movement of the movable cutting blade 25 becomes large, and the retreating operation is loose and causes displacement spots. Conversely, if the shear angle α is set to 0.5 degrees or less, there is a possibility that a problem occurs in the meshing of the fixed cutting blade and the movable cutting blade.

  The urging means 16R and 16L may have a structure that exerts an urging force on the movable cutting blade 25 on the cutting start point S1 side and the cutting end point S2 side. The apparatus shown in FIG. 1 is capable of moving the holding member 19 in the Y direction in FIG. 1 when fixing the holding member 19 (shown by a pair of left and right stems) to the base plate 10 constituting the apparatus frame. It is composed. As shown in FIGS. 1 and 3, for example, the pressing member 19 is fixed with fixing bolts 14 (four shown in the figure, 14 a to 14 d). At this time, the first spring means (biasing means 16R) and the second spring means (biasing means 16L) are interposed between the left and right pressing members 19. The cutting start point side of the movable cutting blade 25 is elastically pressed by the first spring means 16R, and the cutting start point side is elastically pressed by the second spring means 16L.

  In detail, the fixing bolt 14 shown in FIG. 1 is fitted (freely fitted) so that the holding member 19 can move in the Y direction (indicated by the arrow in FIG. 3), and the fixing bolts 14a and 14d are bolts. Spring members (biasing means) 16R and 16L are wound between the head and the pressing member 19. The bolt tip is screwed into the base plate 10 and fixed so that the movable cutting blade 25 is sandwiched between the base plate 10 and the pressing member 19. Accordingly, the movable cutting blade 25 is sandwiched between the base plate 10 and the pressing member 19, and the pressing member 19 is configured to be movable in a direction away from the spring members 16R and 16L. The remaining fixing bolts 14b and 14c are elastically fixed by the rubber bush 14x and allow the movement of the pressing member 19 that moves backward against the action of the spring members 16R and 16L.

  Although the above-described spring members 16R and 16L are wound around the fixing bolts 14a and 14d as shown in the figure, the spring members are wound around the four fixing bolts 14a, 14b, 14c and 14d, respectively. Also good.

  The cam means 32 described above will be described in detail. The apparatus shown in FIG. 1 is provided with sliding contact surfaces 15x and 25x that are in sliding contact with each other on the fixed cutting blade 28 side and the movable cutting blade 25 side, and an inclined cam is provided on one of the sliding contact surfaces. A surface 32 is provided. In FIG. 1, a sliding contact surface 15 x is provided on the paper platform 15, and a sliding contact surface 25 x is provided on the blade surface of the movable cutting blade 25. The sliding contact surface 15x may be provided on the blade surface of the fixed cutting blade 28 or may be provided on the base plate 10. The sliding contact surface 25x may be provided on a blade receiving holder 25h that supports the fixed cutting blade 25. Therefore, an inclined cam surface (cam means) 32 is provided on one or both of the sliding contact surface 15x and the sliding contact surface 25x that are in sliding contact with each other according to the cutting operation of the movable cutting blade 25. In FIG. 3, the inclined cam surface 32 is formed on the sliding contact surface 15 x, and the blade surface of the movable cutting blade 25 is in sliding contact with the inclined cam surface 32. The inclined cam surface 32 is formed on an inclined surface that causes the movable cutting blade 25 to recede from the cutting end surface in accordance with the cutting depth of the movable cutting blade 25.

[Modification of cam means]
FIG. 10 shows a different embodiment of the cam means 32 from the above. In this embodiment, the movable cutting blade 25 and its blade receiving holder 25h are arranged in the plane of FIG. 1Z in the relationship that the apparatus shown in FIG. 1 moves up and down by a pair of drive rotary members 13d and 13f that axially support the movable cutting blade 25 on the base plate 10. If the above-described inclined cam surface 32 is configured to be an inclined cam surface that gradually increases in the vertical direction of this elliptical locus or an inclined cam surface that increases gradually in the left-right direction. good. FIG. 10 shows an inclined cam surface that gradually increases in the left-right direction.

  Therefore, the sliding contact surface 25x is provided on the blade receiving holder 25h on the movable cutting blade 25 side, and the sliding surface 10x is provided on the base plate 10 on the fixed cutting blade 28 side. The sliding contact surface 25x is formed by an inclined cam surface 32a, and the sliding contact surface 10x is formed by an inclined cam surface 32b. When the movable cutting blade 25 shown in FIG. 10 (a) is positioned at the cutting start point p3 with such a configuration, the inclined cam surfaces 32a and 32b are in sliding contact with each other as shown in FIG. 10 (b). When the movable cutting blade 25 is positioned at the cutting end point p5 as shown in FIG. 6C, the cam surfaces are in sliding contact with each other as shown in FIG. Accordingly, the inclined cam surfaces 32a and 32b gradually move backward in the direction of the arrow in FIG. 10C as the cutting depth of the movable cutting blade 25 increases. Since other configurations are the same as those described above, the description thereof is omitted.

[Device frame]
The apparatus frame 10 is equipped with a paper table 15, a movable cutting blade 25, and a pressing means 20, and is made of, for example, a steel plate having an appropriate thickness for mechanical strength according to the cutting of the paper sheet P. The apparatus frame 10 shown in FIG. 1 is composed of a flat base plate arranged in a direction orthogonal to the paper surface of the paper sheet P (the Z direction shown in FIG. 1; the vertical direction). The flat base plate (apparatus frame) 10 is provided with a cutting opening 12 for feeding and discharging the paper sheet P, and a direction in which a paper mount 15 (to be described later) is orthogonal to the cutting opening 12 (the Y direction shown in the figure). ). The base plate 10 has a pair of left and right drive rotation members 13d and 13f (hereinafter, collectively referred to as reference numeral 13) that support the movable cutting blade 25 on the front side, and a pair of drive rotation members on the back side. A transmission chain 29 for synchronously rotating the member 13 is arranged.

[Configuration of the paper platform]
A paper platform 15 having a fixed cutting blade 28 is attached to the cutting opening 12 of the base plate 10 described above. The paper platform 15 is configured by a placement member such as a tray that holds a paper sheet (or a bundle of paper sheets) to be cut in a predetermined posture. The shape may be a shape that supports the entire paper sheet P, or a shape that partially supports the cutting edge of the paper sheet P as shown in the figure. As shown in FIG. 5, the illustrated paper platform 15 is composed of a beam-like member having a predetermined length along a cutting line CL. The beam-like member has a fixed cutting blade 28 at a cutting edge along the cutting line CL. It is attached integrally. As shown in FIG. 3, the paper platform 15 is provided with a step portion 15w along the cutting edge CL, and a plate-like fixed cutting blade 28 is embedded in the step portion 15w. The fixed cutting blade 28 is made of a tough material such as carbon steel, cemented carbide or stainless steel.

  A pair of left and right guide members 17R and 17L (see FIG. 3) are integrally attached to the paper mount 15 with bolts or the like along a cutting line CL. A guide groove 17g is formed in the pair of left and right guide members 17R and 17L so as to guide a pressurizing plate 21 described later so as to be movable up and down. Thus, the paper table 15 is integrally formed with the apparatus frame (base plate) 10, and the fixed cutting blade 28 is integrally attached to the cutting opening 12.

[Composition of cutting blade]
As shown in FIG. 5, a pair of left and right drive rotating members 13d (drive side) and 13f (driven side) are rotatably supported by the base plate (device frame; the same applies hereinafter) 10 as bearings. A movable cutting blade 25 is axially supported by the drive rotating members 13d and 13f. The movable cutting blade 25 is composed of a blade receiving holder 25h and a blade edge member 25c, and is fitted and supported on the transmission pin 13p of the drive rotating member 13 via a bearing sleeve 13s. As shown in FIG. 2, the blade member 25c is inclined at a predetermined angle (hereinafter referred to as a shear angle) α with respect to the sheet surface, and is cut into the recessed groove 25w (see FIG. 3) formed in the blade holder 25h. The starting point S1 and the cutting end point S2 at the right end are attached to each other with a slight inclination.

  This inclination is inclined at a β angle (0.5 ° to 1.5 °; hereinafter referred to as a crossing angle) with respect to the cutting line CL. At the same time, the angle β is enlarged for explanation. This inclination is to cross the fixed cutting blade 28 arranged so as to coincide with the cutting line CL and to make sure that it is meshed. Accordingly, in the illustrated example, the recessed groove 25w of the blade holder 25h is inclined, but in order to facilitate processing, a spacer may be interposed when the blade member 25c is mounted in the groove.

The blade holder 25h is formed of a member having mechanical strength that can withstand a drag generated by cutting a sheet bundle. Reference numeral 25b denotes a stay for reinforcement, which is integrally fixed to the blade holder 25h along the cutting line CL. A blade member 25c is attached to the recessed groove 25w with an adhesive tape or the like.

  The above-described guide members 17R, 17L and the movable cutting blade 25 are sandwiched between the base plate 10 and the pressing member 19. A pressing member 19 (a pair of left and right stay members in the figure) is fixed to the base plate 10 with bolts or the like at a predetermined interval Ld. Guide members 17R and 17L and a movable cutting blade 25 are sandwiched between the base plate 10 and the pressing member 19 (see FIG. 3). At this time, an urging means 16 composed of a compression spring is provided between the base plate 10 and the guide members 17R and 17L so as to press the guide members 17R and 17L against the movable cutting blade 25. Therefore, the fixed cutting blade 28 integral with the guide members 17R and 17L is always urged by the movable cutting blade 25. The biasing means 16 is not limited to the illustrated spring, and may be constituted by a spacer made of an elastic member such as sponge or rubber.

  In the above configuration, the pressure plate 21 is disposed between the base plate 10 and the movable cutting blade 25. A flat plate-like pressure plate 21 is sandwiched between the base plate 10 and the movable cutting blade 25, and the pressure surface 21p of the pressure plate 21 is arranged at a position for pressing and supporting the sheet surface on the paper table. Yes. The guide groove 17g formed in the above-described guide members 17R and 17L supports the press plate 21 so as to be movable up and down. A bent piece 10r is formed on the base plate 10, and a pressure spring 18 is provided on the bent piece 10r so as to press and urge the pressure plate 21 downward. Therefore, the pressure plate 21 disposed between the base plate 10 and the movable cutting blade 25 is configured such that the pressure surface 21 p presses the paper sheet surface on the paper table 15.

  The above-described pressure plate 21 is acted upon by the pressure spring 18 and a non-operating position (home position) where the movable cutting blade 25 is moved up and down to a position separated from the sheet surface above the paper table 15. Then, it moves up and down between the operating position for pressing the paper surface on the paper table 15. Therefore, the upper end flange portion 25f of the movable cutting blade 25 and the engagement piece 21k of the pressure plate 21 are configured to engage with each other. Therefore, the movable cutting blade 25 and the drive rotating member 13 that moves up and down the same constitute a pressure releasing means.

  Next, the relationship between the fixed cutting blade 28 and the movable cutting blade 25 will be described with reference to the operation state explanatory diagram shown in FIG. The movable cutting blade 25 is supported by a pair of left and right drive rotation members 13d and 13f, and moves up and down with respect to the paper table 15 by the rotation. Therefore, in the state shown in FIG. 6A where the movable cutting blade 25 stands by above the paper platform, the pressure plate 21 interlocked with the movable cutting blade 25 stands by at the non-operating position (standby position). In this state, the paper sheet P is inserted and set on the paper table 15.

  Therefore, after the paper sheet P is fed and set on the paper platform 15, when the drive rotating member 13 is rotated in a predetermined direction, the movable cutting blade 25 descends from the top dead center p1. When the movable cutting blade 25 is lowered by a predetermined amount, the pressure plate 21 is also lowered toward the sheet surface, and the upper end flange portion 25f of the movable cutting blade 25 is separated from the engagement piece 21k of the pressure plate 21. Then, the lower end surface 21p of the pressure plate 21 presses the sheet surface by the action of the pressure spring 18. This state is shown in FIG. 9B, and the pressure plate 21 presses the paper platform 15 from above by the action of the pressure spring 18.

[Configuration of movable cutting blade]
The configuration of the movable cutting blade 25 described above will be described with reference to FIGS. As described above, the pair of drive rotation members 13d and 13f are arranged on the base plate 10 at positions spaced apart along the cutting line CL. As shown in FIG. 4, the drive rotating member 13 has a pair of rotating shafts 13 x and 13 y supported by the base plate 10 at positions separated by a distance L in the cutting line CL direction. Drive rotation members 13d and 13f such as arm members and eccentric cams are fixed to the pair of left and right rotation shafts 13x and 13y. Each drive rotary member 13 is provided with a transmission pin (may be a cam follower) 13p at a position different from the rotary shafts 13x, 13y, and a movable cutting blade 25 is supported by the transmission pin 13p. Accordingly, when the pair of left and right drive rotation members 13d and 13f are rotated about the rotation shafts 13x and 13y, the movable cutting blade 25 moves up and down while drawing an arc along the base plate 10.

  As shown in FIG. 3, a drive motor M is connected to the rotation shafts 13x and 13y of the drive rotation members 13d and 13f. A sprocket 30 is provided integrally with the rotary shafts 13x and 13y on the back side of the base plate 10, and a transmission chain 29 is bridged between the left and right sprockets 30a and 30b. A drive motor M is connected to the sprocket 30a of the drive rotating member 13d located on the drive side via a reduction gear 31.

  Next, the connection relationship between the drive rotating members 13d and 13f and the movable cutting blade 25 shown in FIG. 9 will be described. As described above, the pair of left and right drive rotation members 13d and 13f are rotated at the same angular velocity in synchronization with the rotation of the drive motor M. At this time, the illustrated apparatus interlocks the drive-side rotary shaft 13x connected to the drive motor M and the driven-side rotary shaft 13y connected to the rotary shaft 13x by the transmission chain 29 so as to form a phase difference θ. It is. In other words, the drive rotation member 13f of the driven side rotation shaft 13y is configured to rotate with a delay of the angle θ shown in FIG. 9A with respect to the drive rotation member 13d of the drive side rotation shaft 13x. Due to this phase difference (angle θ), the inclination angle α (shear angle) between the movable cutting blade 25 and the sheet surface is the angle α1 in the standby state in FIG. 9A and the angle in the shear start state in FIG. With α2, the latter angle is large (α1 <α2).

  Accordingly, it is possible to increase the shear angle for cutting the paper sheet without increasing the vertical stroke of the movable cutting blade 25 (without increasing the size of the apparatus). As the paper sheet is cut, the angle during cutting and the angle α3 at the end of cutting in FIG. 4C are substantially the same as the angle α1 at the start of cutting (α1≈α2≈α3). ).

  As described above, the drive-side rotary shaft 13x and the driven-side rotary shaft 13y rotate at the same peripheral speed, and the phase difference between the drive-side drive rotary member 13d and the driven-side drive rotary member 13f attached thereto. θ is formed. In this relationship, at least one of the driving side and the driven side needs to freely connect the movable cutting blade 25 and the driving rotary member 13 in a direction perpendicular to the vertical cutting direction (if there is no such movement, the two driving rotary members Will buffer each other and their movement will be locked). Therefore, in the illustrated example, the driven rotary member 13f and the movable cutting blade 25 are fitted and supported in a freely movable manner by the long hole 11 (see FIG. 2).

  The above-mentioned movable cutting blade 25 is configured to cut the cutting blade while moving it in the cutting line CL direction when descending from above to cut the paper sheet P. The moving direction of the movable cutting blade 25 is reversed between the start of cutting and the end of cutting. That is, as shown in FIG. 9A, the movable cutting blade 25 stands by at the point p1 shown in the drawing where the driving rotary member 13d on the driving side is located at the top dead center, and pressurizes at the point p2 shown in the figure rotated counterclockwise by a predetermined angle. The plate 21 presses the paper surface. Then, cutting is started at the point p3 in the figure, and cutting is finished at the point p5 (bottom dead point) in the figure.

  Accordingly, the movable cutting blade 25 that pivots around the rotation shafts 13x and 13y starts cutting the sheet bundle between the top dead center p1 and the inflection point p4 of the arc locus, and exceeds the inflection point p4. The cutting is set to end at the bottom dead center p5. Since the cutting start point of the maximum allowable sheet bundle is set between the top dead center p1 and the inflection point p4 in this way, the movable cutting blade 25 moves in the direction of the cutting line CL when descending from the standby position to the cutting position. First, it moves to the left side, and then moves to the right side (after exceeding the inflection point P2). As a result, the cutting edge of the movable cutting blade 25 descends while moving the sheet bundle on the paper platform 15 to the left at the start of cutting, and after exceeding the inflection point p4, the cutting edge descends while moving to the right. A sheet bundle will be cut.

  As described above, the movable cutting blade 25 moves forward (left side in FIG. 9) while entering the paper bundle while being pushed, so that the cutting depth can be ensured even with a soft paper bundle. . At the end of cutting, the movable cutting blade 25 finishes cutting while moving to the right in FIG. For example, when cutting a soft and soft material with a flat blade-shaped knife blade, cutting the paper sheet with the movable cutting blade 25 is easy to cut in the depth direction by pushing the blade edge forward at the start of cutting. It is understood from the fact that when the cutting is finished, the cut surface is adjusted by cutting the blade edge backward.

  The operation of the movable cutting blade 25 configured as described above will be described. When the movable cutting blade 25 is retracted to the upper standby position (cutting standby state), the drive rotating member 13d located on the driving side is positioned at the top dead center p1, and the movable cutting blade 25 and the pressure plate 21 are placed on the paper platform. 15 is retracted upward from the surface of the paper sheet 15. In this standby state, the sheet bundle is fed and set on the paper platform 15. Next, when the drive motor M is activated and the drive rotating members 13d and 13f are rotated counterclockwise, the movable cutting blade 25 gradually moves downward from the top dead center p1, and the pressure plate 21 engaged therewith. Also descends. When the drive rotating member 13d reaches the point p2 in the figure, the lower end surface 21p of the pressure plate 21 presses the sheet surface. Next, when the drive rotation members 13d and 13f further move to the point p3 in the figure, the movable cutting blade 25 starts cutting the sheet surface.

  While the drive rotating member 13d moves from the point p3 to the point p4 in the drawing, the movable cutting blade 25 moves downward while moving to the left side of the drawing, and the blade edge member 25c enters the inside while pushing the sheet bundle. Next, when the drive rotation members 13d and 13f exceed the point p4 (inflection point), the movable cutting blade 25 moves deeply into the sheet bundle while moving to the right side and cuts it. When the movable cutting blade 25 reaches the bottom dead center p5, the cutting of the sheet bundle ends.

[Description of action]
Next, the operation in the above basic configuration will be described with reference to FIG. 6 (cutting start point), FIG. 7 (cutting middle point), and FIG. 8 (cutting end point). A movable cutting blade 25 to be described later moves up and down in the cutting direction by arm-shaped drive rotating members 13d and 13f. Although this operation will be described later with reference to FIG. 9, by the rotational movement of the drive rotary members 13d and 13f, the standby position p1, the press start point p2, the cutting start point p3, the inflection point p4, and the cutting end point p5 are formed at the top dead center. The

  Therefore, the movable cutting blade 25 moves up and down from the top dead center of the standby position p1 to the bottom dead center of the cutting end point p5. FIG. 6 shows a cutting start point. As shown in FIG. 6A, the movable cutting blade 25 is inclined at an intersecting angle β with respect to the fixed cutting blade 28. Further, a shear angle α is formed at the blade edge so as to gradually cut the sheet bundle from one end to the other end from the left end (cutting start point 25S) to the right end (cutting end point). When the movable cutting blade 25 is the cutting start point, the sheet bundle P slides against the fixed cutting blade 28 at the cutting point op1 to cut the paper sheet. At this time, the sliding contact surface 25 x of the movable cutting blade 25 does not reach the inclined cam surface 32. Accordingly, the movable cutting blade 25 is elastically pressed against the base plate 10 by the urging means 16R and 16L, and is located in a state where it is in sliding contact with this fret surface.

  Next, when the movable cutting blade 25 advances to the cutting middle point, the movable cutting blade 25 comes into sliding contact with the fixed cutting blade 28 at a cutting point op2 shown in FIG. At this time, the movable cutting blade 25 is moved backward in the direction of the arrow (a) by the inclined cam surface 32. Regardless of the elastic force of the first biasing means 16R acting on the movable cutting blade 25 in this state, the position of the cutting start point 25S side of the movable cutting blade 25 is regulated by the cam surface 32, and the other cutting end point 25e side is second attached. The base plate 10 is pressed by the pressing force of the biasing means 16L. For this reason, the movable cutting blade 25 moves backward in a direction away from the cut end surface of the paper sheet while maintaining a predetermined crossing angle β. In this operation, the movable cutting blade 25 gradually moves backward in a direction away from the cutting end surface until the cutting point advances from the start point op1 to the end point op3.

  When the movable cutting blade 25 advances to the cutting end point, the cutting point op3 movable cutting blade 25 shown in FIG. 8A comes into sliding contact with the fixed cutting blade. At this time, the movable cutting blade 25 is moved to the maximum retracted position by the inclined cam surface 32. As described above, the movable cutting blade 25 has a support structure in which the movable cutting blade 25 is elastically pressed toward the fixed cutting blade 28 by the pair of left and right urging means 16R and 16L. While maintaining, the sheet bundle is gradually cut from one end to the other end. 6 to 8, the crossing angle β is enlarged and displayed for ease of illustration, and this angle is about 0.5 to 1.5 degrees (not limited to this angle range). Therefore, in an actual apparatus (embodiment), the angle is fine.

  In the present invention, when one of the movable cutting blade 25 and the fixed cutting blade 28 is inclined with respect to the other by a predetermined angle (β) so as to cross each other, the fixed cutting blade 28 matches the cutting line CL. A case has been described in which the movable cutting blade 25 is inclined at an angle (β). As a different method, the present invention may be configured such that the movable cutting blade 25 is arranged so as to coincide with the cutting line CL and the fixed cutting blade 28 is inclined at an angle (β).

  Further, in the present invention, the fixed cutting blade 28 and the movable cutting blade 25 are each formed in a flat plate shape in which the cutting edge is a straight line, but one of the fixed cutting blade and the movable cutting blade is drawn with a predetermined curvature. It may be formed to be curved.

[Configuration of Image Forming Apparatus]
Next, the configuration of the post-processing apparatus and the image forming apparatus provided with the above-described sheet bundle cutting apparatus A will be described with reference to FIG. As the image forming apparatus B, various structures such as a copying machine, a printer, and a printing machine can be adopted, and an electrostatic printing apparatus is illustrated. In the image forming apparatus B, a paper feed unit 52, a printing unit 53, a paper discharge unit 54, and a control unit are built in a casing 51. A plurality of cassettes 52 a corresponding to the sheet size are prepared in the sheet feeding unit 52, and a sheet having a size designated by the control unit is fed out to the sheet feeding path 55. The sheet feeding path 55 is provided with a registration roller 55a, and after feeding the sheet to the leading edge, feeds the sheet to the downstream printing unit 53 at a predetermined timing.

  The printing unit 53 is provided with an electrostatic drum 53a. Around the electrostatic drum 53a, a print head 53b, a developing device 53c, a transfer charger 53d, and the like are arranged. The print head 53b is composed of, for example, a laser light emitter, and forms an electrostatic latent image on the electrostatic drum 53a. A toner ink is attached to the latent image by the developing device 53c, and printing is performed on the sheet by the transfer charger 53d. . This print sheet is fixed by the fixing device 56 and carried out to the paper discharge path 54b. A paper discharge port 58 and a paper discharge roller 59 formed in the casing 51 are disposed in the paper discharge unit 54. The print sheet on which the image is formed in this manner is carried out from the paper discharge port 58 by the paper discharge roller 59.

  A scanner unit 45 shown in the figure optically reads a document image to be printed by the print head 53b. As is generally known, the platen 46 on which an original sheet is placed and set, a carriage 47 that scans an original image along the platen 46, and an optical device that photoelectrically converts an optical image from the carriage 47. A reading means (for example, a CCD device) 48 is included. In the illustrated example, a document feeder 49 for automatically feeding a document sheet to the platen 46 is provided on the platen 46.

[Configuration of finisher device (sheet handling device)]
Next, a finisher device C is connected to the downstream side of the image forming apparatus B, and the image-formed sheets are aligned in a bundle, and the sheet bundle aligned in the bundle is stapled, adhesive tape, adhesive Binding is done with glue, and the bookbinding process is performed. The sheet bundle after the bookbinding process is cut and aligned by the aforementioned sheet bundle cutting apparatus A and stored in the paper discharge stacker. The finisher device C shown in FIG. 11 staples and binds the center of the bundle of paper sheets aligned in a bundle, and folds the saddle-stitched paper bundle into a booklet, and then cuts the folded leading end. The apparatus to align is shown.

  Therefore, a carry-in route 61 that is continuous with the paper discharge port 58 of the image forming apparatus B is provided, and the stacking tray 62 is disposed on the downstream side of the route paper discharge port 61 a of the carry-in route 61. The tray is provided with a switchback roller 62a for transferring the sheet back and forth in the paper discharge direction and a rear end regulating member 62b for regulating the rear end of the sheet. The switchback roller 62a conveys the sheet from the path sheet discharge outlet 61a to the front end side of the tray in the sheet discharge direction, and after the sheet rear end enters the tray, the sheet is transferred in the direction opposite to the sheet discharge direction. Abutting the end regulating member 62b for positioning. The rear end regulating member 62b is swingable between a position protruding from the tray and a position retracted from the tray, and is connected to a shift means (not shown) such as an electromagnetic solenoid.

  The stacking tray 62 is provided with a rear end pushing member 63 for carrying the stacked sheet bundle (paper sheets) to the downstream side. A side alignment member (not shown) is arranged on the stacking tray 62 so as to position and align the conveyance orthogonal direction of the sheet entering from the path discharge port 61a. Accordingly, the sheets from the path discharge port 61a are carried onto the tray, and are stacked in a bundle shape with the trailing end of the sheet being regulated by the trailing end regulating member 62b. Thereafter, the paper sheets are carried out to the downstream side by the rear end pushing member 63 with the rear end regulating member 62b retracted from the stacking tray 62.

  A bookbinding path 64 is provided downstream from the stacking tray 62, and a saddle stitch stapler 65 is disposed in the bookbinding path 64. The structure of the saddle stitching stapler 65 is not described in detail, but is composed of a unit that inserts staples into a sheet bundle and bends the leading end, and an upper unit that inserts staples and a lower unit that bends the leading end transfer the sheet bundle. The bookbinding path 64 is arranged vertically. The bookbinding path 64 is provided with a first stopper 64a and a second stopper 64b for locking the leading end of the sheet bundle. The first stopper 64a is configured by a movable member that can freely move in and out of the bookbinding path 64, and is arranged so that the saddle stitching stapler 65 is positioned at the center of the sheet bundle in a state where the leading end of the sheet bundle is locked. Accordingly, the sheet bundle accumulated on the accumulation tray 62 is transferred to the bookbinding path 64 by the rear end pushing member 63, and is bound by the saddle stitching stapler 65 with the front end locked by the first stopper 64a.

  After the first stopper 64a is retracted from the bookbinding path 64, the sheet bundle that has been saddle stitched and bound as described above is engaged with the second stopper 64b on the downstream side. In this state, a folding roll 66a and a middle folding knife 66b are arranged to bend the center (staple binding position) of the sheet bundle. The middle folding knife 66b is composed of a blade that can move up and down in the direction of the arrow, and guides the sheet bundle in the bookbinding path to the folding roll 66a. The folding roll 66a is composed of a pair of rolls, and is bent at the center of the sheet bundle and transported to the paper discharge path 67 on the downstream side.

  A paper discharge path 67 disposed on the downstream side of the folding roll 66 a is configured as a switchback path, and guides the sheet to the cutting path 68. In the figure, 67a is a switchback roller, and 67b is an intermediate tray. The cutting device A is arranged in the cutting path 68 configured as described above. The cutting apparatus A is the apparatus described with reference to FIG. 1, and the operation thereof will be described later. The cutting path 68 is provided with a belt conveying means 69 for transferring paper sheets and a grip rotating means 70.

  In the above configuration, the sheets on which the image is formed by the image forming apparatus B are stacked and aligned on the stacking tray 62 in a bundle. Therefore, when a control CPU (not shown) provided in the finisher apparatus C receives a job end signal from the image forming apparatus B, the rear end regulating member 62b is retracted out of the tray, and the rear end pushing member 63 moves the sheets downstream. Transfer to the bookbinding path 64 on the side. Then, the leading end of the paper sheet is brought into contact with the first stopper 64a in the bookbinding path and stopped. In this state, the saddle stitching stapler 65 is operated to staple the center (center folding position) of the sheet bundle.

  Next, the control CPU retracts the first stopper 64a out of the path and stops the paper sheet against the second stopper 64b further downstream. Then, the center (staple binding position) of the sheet bundle faces the folding roll 66a, and the middle folding knife 66b is moved in the direction of the arrow in this state. Then, the sheet bundle is guided to the folding roll 66a while being bent at the center. Therefore, when the folding roll 66a is rotationally driven, the sheet bundle is bent at the center and transferred to the paper discharge path 67 on the downstream side.

  Thus, the paper sheet guided to the paper discharge path 67 is sent to the cutting path 68 with its transport direction reversed. In the cutting path 68, the paper sheet is switched back by the belt conveying means 69 to position the leading edge. In this leading edge positioning, the paper sheet is conveyed to the right side in FIG. 8 with the movable cutting blade 25 retracted to the standby position, and the entire paper sheet enters the cutting path 68. Therefore, the paper sheet is moved back to the left side of the figure by the belt conveying means 69, and the paper sheet is positioned so that the predetermined cutting line CL coincides with the position of the cutting blade. Next, the control CPU nips the paper sheet with the grip rotating means 70, and then presses and holds the paper sheet with the press means 20. Therefore, the movable cutting blade 25 is moved in a predetermined direction. In this cutting state, the edge of the paper sheet is cut according to the procedure described above with reference to FIG.

  Next, after cutting the small edge portion of the sheet bundle, the control CPU releases the pressing means 20 and operates the grip rotating means 70 to rotate the sheet bundle, for example, 90 degrees so that the top portion faces the cutting position. After the sheet bundle is rotated, the sheet bundle is fed to the cutting line CL by a predetermined amount. The sheet bundle is transferred by moving the grip rotating means 70 to the right side in the drawing or by the belt conveying means 69. Thereafter, the top of the sheet bundle is cut, and the fore edge is cut similarly. When the cutting of the sheet bundle in the three directions is completed, the control CPU carries out the sheet bundle to the sheet discharge stacker 71 by the belt conveying means 69.

  The illustrated finisher device C shows a case where booklet binding is performed by the saddle stitch stapler 65. However, in this case, an adhesive is applied to the end face of a bundle of paper sheets and the case sheet is bound by a cover sheet (case binding). Of course, it is also possible to bind the top paste without covering with a cover sheet.

A Paper sheet bundle cutting device (trimmer unit)
P Paper sheet CL Cutting line α Shear angle β Crossing angle S1 Cutting start point S2 Cutting end point 10 Device frame (base plate)
10x sliding contact surface 12 cutting opening 13d drive rotation member (13)
13f Drive rotation member (13)
13p Transmission pin 13s Bearing sleeve 14 Fixing bolt (14a-14d)
14x rubber bush 15 paper mount 15x sliding contact surface 15w step 16R urging means (first spring means) (spring member)
16L biasing means (second spring means) (spring member)
17R guide member 17L guide member 17g guide groove 20 pressing means 21 pressure plate 25 movable cutting blade 25c cutting edge member 25b reinforcing stay 25h blade receiving holder 25w recessed groove 25x sliding contact surface 28 fixed cutting blade 29 transmission chain 32 cam means ( (Inclined cam surface)
32a Inclined cam surface (modification)
32b Inclined cam surface (modification)

Claims (7)

An apparatus for cutting paper sheets along a predetermined cutting line,
A paper platform for placing and supporting paper sheets;
Press means for pressing and holding paper sheets on the paper table;
A flat plate-shaped movable cutting blade that is movable in the vertical cutting direction with respect to the paper sheets on the paper table;
A blade tip that is formed on the movable cutting blade and is inclined at a predetermined angle with respect to the paper sheet surface so as to gradually cut the paper sheet from one end to the other end;
A fixed cutting blade having a flat plate shape that is arranged on the paper platform side and is in sliding contact with the cutting edge of the movable cutting blade;
An apparatus frame that supports the movable cutting blade by being inclined at a predetermined angle with respect to the cutting line so as to intersect the fixed cutting blade;
With
The movable cutting blade is supported by the apparatus frame so as to be displaceable in a direction orthogonal to the cutting end surface of the paper sheet, and is provided with an urging means that elastically presses the fixed cutting blade.
This biasing means is composed of a pair of left and right spring means for applying elastic force to the cutting start point side and the cutting end point side of the movable cutting blade,
A paper sheet cutting apparatus, wherein cam means for moving the movable cutting blade backward against the biasing means is provided on either the fixed cutting blade side or the movable cutting blade side. The biasing means is composed of first spring means for elastically pressing the cutting start point side of the movable cutting blade, and second spring means for elastically pressing the cutting end point side,
2. The paper sheet cutting apparatus according to claim 1, wherein each of the first and second spring means comprises one or a plurality of spring members. It said cam means is constituted by sliding contact surfaces in sliding contact with each other in the arranged the fixed cutting blade and the movable cutting blade the cutting start point side,
2. The paper sheet cutting apparatus according to claim 1, wherein at least one of the sliding contact surfaces is an inclined cam surface that gradually moves the movable cutting blade backward in accordance with a cutting depth in a cutting direction. The movable cutting blade is configured to move up and down in a cutting direction by a swinging motion,
4. The paper sheet cutting apparatus according to claim 3, wherein the inclined cam surface is configured as a cam surface inclined in a swinging left-right direction with respect to an arcuate locus of the movable cutting blade. The movable cutting blade is supported by a pair of left and right drive rotation members disposed on the apparatus frame, and moves up and down in a cutting direction in a cutting direction by the rotation of the drive rotation member. Item 5. A sheet cutting apparatus according to Item 4. Tray means for collecting sequentially supplied sheets in a bundle;
A bundle binding means for binding paper sheets from the tray means;
A paper sheet cutting device for cutting the paper sheets bound by the bundle binding means;
With
A finisher apparatus comprising the paper sheet cutting apparatus having the structure according to any one of claims 1 to 5. The paper sheet folding means for folding the paper sheets bound by the bundle binding means is arranged between the bundle binding means and the paper sheet cutting device. Finisher equipment.

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