JP6283179B2 - Sheet cutting device - Google Patents

Description

  The present invention relates to a sheet cutting apparatus for cutting a sheet.

  2. Description of the Related Art Conventionally, a sheet cutting apparatus that cuts a sheet has been used for the purpose of bookbinding or the like (for example, see Patent Document 1). A conventional sheet cutting apparatus includes a table on which a sheet to be cut is placed, a band-shaped fixed blade provided on the table, and a movable blade that cuts the sheet in cooperation with the fixed blade. In a conventional sheet cutting apparatus, a sheet to be cut is placed on a table, and the fixed blade and the movable blade cooperate to cut the sheet to be cut. At that time, the conventional sheet cutting apparatus cuts sheets in order from one end of the sheet to another end. The waste generated by the cutting is dropped and stored in the waste bin.

JP 2010-247237 A

  Like a conventional sheet cutting apparatus, from one end of a sheet to another end (hereinafter, “another end” may be referred to as “another end”). When the sheets are cut sequentially, the portion of the sheet that is about to be cut is sandwiched between the fixed blade and the movable blade of the sheet cutting apparatus and supported by the fixed blade and the movable blade. The scrap generated by the cutting hangs vertically downward due to gravity.

  Immediately before the end of cutting, the other end portion of the sheet is supported by the fixed blade and the movable blade, so that the waste generated by the cutting is positioned near the vertically lower side of the other end portion without leaving the sheet. When cutting is completed, the waste falls in a state of being biased vertically downward from the other end and is stored in the waste bin. In the trash box, the length of the side parallel to the fixed blade is only slightly longer than the length from one end to the other end described above, and the trash box is shallow. That is, the waste bin is small.

  Therefore, a part of the waste overflows from the waste bin in the vicinity of the lower end of the other end vertically. The waste overflowing from the trash box is placed on the sheet to be cut in the next cutting process, or is sandwiched between two adjacent sheets when the cutting target is a plurality of stacked sheets. As a result, problems may occur in the cutting process itself and the subsequent sheet processing. In addition, as described above, the waste is stored in the waste box in a state of being biased vertically below the other end, so that the recovery of the waste stored in the waste box can be performed as compared with the case where the waste is stored in the waste box without being biased. A lot must be done. There is a need to provide a sheet cutting device that reduces the uneven distribution of waste generated by cutting even if the sheet is sequentially cut from one end of the sheet toward another end, and stores the waste in the waste bin. It has been.

  The present invention relates to a sheet cutting apparatus that reduces the uneven distribution of waste generated by cutting and stores waste in a waste box even if the sheet is sequentially cut from one end to another end of the sheet. The purpose is to provide.

One aspect of the sheet cutting apparatus according to the present invention includes a table on which a sheet to be cut is mounted, a table having a mounting surface facing upward in the vertical direction in a substantially horizontal state, and the other end from one end side of the table . A band-shaped fixed blade extending to the side, and sequentially approaching the fixed blade in order from one end side to the other end side of the fixed blade, and in cooperation with the fixed blade, a movable blade for cutting sequentially the placed said sheet from the side of one end of the fixed blade toward the side of the other end, between said second end and said one end of said fixed blade, vertical than the previous SL fixed blade while positioned in the direction downwards, have a, a supporting portion located vertically above the bottom surface of the waste box to be disposed vertically below the stationary blade, wherein the support portion includes: the base of the mounting surface direction orthogonal to the other end of the one end and the fixed blade of the fixed blade in the adjacent outer surface of including the surface Projects, even without less inclined hand is relative to the previous SL surface, side closer to the one end of the fixed blade for temporarily supporting a part of the debris caused by the cutting by the movable blade and the fixed blade and A side portion close to the other end of the fixed blade is provided .

The side part of the one side of the fixed blade among the side parts of the support part may be orthogonal to the plane. Alternatively, at least a part of the side portion on the one end side of the fixed blade in the side portion of the support portion is a flat surface adjacent to the flat surface and the mounting surface of the table and located on one end side of the fixed blade. You may have fallen to the surface side .

The side part on the other end side of the fixed blade among the side parts of the support part may be orthogonal to the plane. Alternatively, at least a part of the side portion on the other end side of the fixed blade among the side portions of the support portion is a plane adjacent to the plane and the mounting surface of the table, and is located on one end side of the fixed blade. it may have fallen on the flat surface side.

Supporting part is a film, the support unit has a function to restore the function of changing the posture in the vertical direction downward from a substantially horizontal state when the pedestal mounting surface is oriented upward in the vertical direction in a substantially horizontal state You may have. In that case, the shape of the support portion is a comb shape composed of a plurality of teeth, and each of the plurality of teeth of the support portion is vertical when the mounting surface of the table is substantially horizontal and faces upward in the vertical direction. You may arrange | position so that it may not overlap in a direction.

The sheet cutting device further includes a holding portion to which the support portion is attached. The support portion includes a plate-like member and an attachment portion. The attachment portion includes a hinge and a spring. The plate-like member is a base. The mounting surface may be attached to the holding portion by the attachment portion so as to be positioned substantially horizontally when the mounting surface is directed upward in the vertical direction in a substantially horizontal state.

The upper surface of the support portion may be inclined downward in the vertical direction when the mounting surface of the base is directed upward in the vertical direction in a substantially horizontal state.

  According to the present invention, even when a sheet is sequentially cut from one end of the sheet toward another end, the uneven distribution of the waste generated by the cutting is further reduced and the waste is stored in the waste bin. Can do.

It is a perspective view of the sheet | seat cut by the sheet | seat cutting apparatus of embodiment of this invention. It is a figure showing simply the situation where the sheet cutting device of an embodiment of the invention is cutting the sheet to be cut. It is a perspective view of the sheet cutting device in an embodiment of the present invention. It is a front view of the sheet cutting apparatus shown in FIG. It is sectional drawing of the sheet | seat cutting apparatus in the VV line shown in FIG. It is a top view of the support part of the sheet | seat cutting apparatus shown in FIG. It is a figure which shows the condition where the waste adheres to the guide surface of the guide plate of a sheet cutting device, when the sheet | seat of cutting is cut by the sheet cutting device in embodiment of this invention. It is a figure for demonstrating the condition where the scrap adhering to the guide surface of a guide plate is scraped off by the scraping part of the sheet | seat cutting apparatus of this Embodiment. It is the 1st figure for explaining the situation where the waste generated when the conventional sheet cutting device cuts a sheet falls and is stored in a waste box. It is the 2nd figure for explaining the situation where the waste generated when the conventional sheet cutting device cuts a sheet falls and is stored in a waste box. It is FIG. 3 for demonstrating the condition where the waste which arises when the conventional sheet | seat cutting apparatus cuts a sheet | seat falls, and is stored in a waste box. It is FIG. 1 for demonstrating the condition where the waste which arises when the sheet cutting apparatus of embodiment of this invention cuts a sheet | seat falls, and is stored in a waste box. It is FIG. 2 for demonstrating the condition where the waste which arises when the sheet | seat cutting device of embodiment of this invention cuts a sheet | seat falls, and is stored in a waste box. FIG. 4 is a third view for explaining a situation where waste generated when the sheet cutting device according to the embodiment of the present invention cuts a sheet falls and is stored in a waste box. It is a top view of a trapezoid support part. It is a perspective view of the sheet cutting apparatus which has a support part including an L-shaped part in a part. It is a top view of the support part which contains a L-shaped site | part in a part of sheet cutting apparatus shown in FIG. It is a perspective view of the sheet | seat cutting apparatus which has a 2nd support part including a L-shaped site | part in part. It is a top view of the 2nd support part which includes a L-shaped site | part in a part of sheet cutting apparatus shown in FIG. It is a side view of the 2nd support part which includes a L-shaped site | part in a part of sheet cutting apparatus shown in FIG. It is a perspective view of the 2nd support part which includes a L-shaped site | part in a part of sheet cutting apparatus shown in FIG. It is a perspective view of a block-shaped support part.

  A sheet cutting device according to an embodiment of the present invention will be described below with reference to the drawings. Before describing the configuration of the sheet cutting apparatus according to the present embodiment, the operation of the sheet cutting apparatus according to the present embodiment will be briefly described. FIG. 1 is a perspective view of a sheet S cut by the sheet cutting apparatus according to the embodiment of the present invention. In many cases, the sheet S is paper, and the sheet cutting apparatus according to the present embodiment cuts a plurality of stacked sheets S. FIG. 1 shows a situation in which a plurality of sheets S are stacked.

  A portion of the sheet S that is cut by the sheet cutting device is a cutting line CL indicated by a broken line. The cutting line CL is a straight line. In the sheet cutting apparatus according to the present embodiment, the sheet S is separated from one end CL1 of the cutting line CL as one end of the sheet S from the cutting line CL as another end of the sheet S. Cut in order toward the other end CL2. In the sheet S, a large area E of the two areas separated by the cutting line CL is a part that is effectively used for bookbinding or the like after cutting by the sheet cutting apparatus. A small region F of the two regions separated by the cutting line CL is a part that becomes waste after being cut by the sheet cutting device.

  FIG. 2 is a diagram simply illustrating a situation where the sheet cutting apparatus according to the embodiment of the present invention is cutting the sheet S to be cut. The sheet cutting apparatus according to the present embodiment has a movable blade 5 as will be described later. In FIG. 2, only the movable blade 5 and the sheet S are shown in order to briefly explain the cutting operation. Although one end portion CL1 of the cutting line CL is not shown in FIG. 2, as described with reference to FIG. 1, the sheet cutting apparatus according to the present embodiment uses the sheet S as one end of the cutting line CL. Cut from the part CL1 toward the other end part CL2 in order. Therefore, as shown in FIG. 2, strip-like waste W is generated. The waste W falls and is stored in a waste box 7 described later.

  Next, the configuration of the sheet cutting apparatus according to the embodiment of the present invention will be described. FIG. 3 is a perspective view of the sheet cutting apparatus 1 according to the embodiment of the present invention. FIG. 4 is a front view of the sheet cutting apparatus 1 shown in FIG. FIG. 5 is a cross-sectional view of the sheet cutting apparatus 1 taken along the line VV shown in FIG. The sheet cutting apparatus 1 is an apparatus disposed at a subsequent stage of the image forming apparatus, and cuts the sheet S processed by the image forming apparatus for the purpose of bookbinding. The image forming apparatus is not shown.

  As shown in FIGS. 3, 4 and 5, the sheet cutting apparatus 1 includes a frame 2, a table 3, a fixed blade 4, a movable blade 5, a guide plate 6, a waste box 7, and a scraping unit 8. And a support portion 9. The frame 2 is to which the base 3 and the movable blade 5 are attached. The table 3 is on which the sheet S to be cut is placed. The table 3 has a mounting surface 31, and the sheet S to be cut is conveyed from the image forming apparatus to the table 3 by the guide plate 6 and is mounted on the mounting surface 31 of the table 3. In many cases, a plurality of sheets S are placed on the placement surface 31 of the table 3.

  The fixed blade 4 is a strip-shaped blade provided at one end of the table 3. As described above, the sheet cutting apparatus 1 is an apparatus disposed at the subsequent stage of the image forming apparatus, and the fixed blade 4 is provided at the end portion of the base 3 closest to the image forming apparatus. The movable blade 5 is a plate-like blade that cuts the sheet S placed on the placement surface 31 of the table 3 in cooperation with the fixed blade 4, and includes the first rotating member 11 and the second rotating member 12. Is attached to the frame 2.

  The frame 2 has a chain for rotating the first rotating member 11 and the second rotating member 12 synchronously on the back side. The frame 2 also has a motor that rotates the chain. The chain is rotated by the motor, and the first rotating member 11 and the second rotating member 12 are rotated in synchronization with the rotation of the chain, whereby the plate-like movable blade 5 is rotated on a certain plane.

  Specifically, when the mounting surface 31 of the table 3 is oriented vertically upward in a horizontal state, the plate-like movable blade 5 rotates on a certain vertical surface as shown in FIG. At that time, the movable blade 5 approaches the fixed blade 4 in order from the one end 41 side to the other end 42 side of the fixed blade 4, and is mounted on the mounting surface 31 of the table 3 in cooperation with the fixed blade 4. The formed sheet S is cut in order from one end of the sheet S to another end. Furthermore, when the mounting surface 31 of the table 3 is oriented vertically upward in a horizontal state, the movable blade 5 cuts the sheet S while moving from vertically upward to vertically downward in a situation approaching the fixed blade 4. Although one end 41 of the fixed blade 4 is not clearly shown in FIGS. 3, 4 and 5, as described above, the fixed blade 4 is a band-shaped blade provided at one end of the table 3, Since the other end 42 of the fixed blade 4 is clearly shown in FIGS. 3 and 4, the one end 41 of the fixed blade 4 can be easily understood. The plate-like movable blade 5 is a trapezoidal blade that is wider as the width is closer to one end 41 of the fixed blade 4 and is narrower as it is closer to the other end 42 of the fixed blade 4.

  The guide plate 6 guides the sheet S to be cut to the placement surface 31 of the table 3. As described above, the sheet cutting apparatus 1 is disposed at the rear stage of the image forming apparatus. Therefore, the guide plate 6 guides the sheet S processed by the image forming apparatus to the placement surface 31 of the table 3 in order to cut the sheet S processed by the image forming apparatus for the purpose of binding. The guide plate 6 also functions as an auxiliary portion that assists in supporting a portion of the sheet S to be cut placed on the placement surface 31 of the table 3 that protrudes from the table 3.

  A surface 61 of the guide plate 6 that guides the sheet S to be cut to the placement surface 31 of the table 3 (hereinafter referred to as “guide surface”) 61 guides the sheet S to the placement surface 31 of the table 3. When it does, it is located in the plane containing the mounting surface 31. When the sheet S is cut by the fixed blade 4 and the movable blade 5, as described above, the movable blade 5 cuts the sheet S while moving from vertically upward to vertically downward. Therefore, when the sheet S is cut, the guide surface 61 is tilted vertically downward in conjunction with the movement of the movable blade 5 so as not to contact the movable blade 5.

  The waste box 7 is arranged at a position that is vertically lower than the fixed blade 4 when the placement surface 31 of the table 3 is oriented vertically upward in a horizontal state. Furthermore, the trash box 7 is arranged vertically below the guide plate 6 in the above-described case. The waste box 7 is a rectangular parallelepiped box in which the strip-like waste W of the sheet S that is generated by cutting by the fixed blade 4 and the movable blade 5 and falls. In the above-described case, the waste box 7 is formed with an opening located vertically above, and the waste W is stored in the waste box 7 from the opening. The length of the side parallel to the fixed blade 4 in the waste box 7 is only slightly longer than the length of the cutting line CL in the sheet S. The depth of the waste box 7 is, for example, about one third of the cutting line CL and is shallow. That is, the waste box 7 is small.

  The scraping portion 8 is provided so as to protrude outward from the surface including the surface of the movable blade 5 that does not contact the fixed blade 4, and moves in conjunction with the movement of the movable blade 5. The direction of the outside of the table 3 means the direction from the inside to the outside of the table 3. More specifically, the shape of the scraping portion 8 is a plate shape, and the scraping portion 8 is provided in a state of being fixed to the movable blade 5 so that the state orthogonal to the movable blade 5 is maintained. Yes.

  Furthermore, the scraping portion 8 is a brush formed of a conductive material. The scraping unit 8 moves from vertically upward to vertically downward when the mounting surface 31 of the table 3 is horizontal and faces upward, and is generated by cutting by the fixed blade 4 and the movable blade 5 to generate the guide plate 6. The strip-shaped waste W of the sheet S adhering to the guide surface 61 is scraped off. The scraping unit 8 is provided at a position where the guide plate 6 does not contact the sheet S when the sheet S to be cut is guided to the placement surface 31 of the table 3.

  The support portion 9 is positioned vertically below the fixed blade 4 when the mounting surface 31 of the table 3 is oriented vertically upward between the one end 41 and the other end 42 of the fixed blade 4. The upper edge of the waste box 7 disposed vertically below the fixed blade 4 is positioned vertically above. Specifically, the support portion 9 is provided at a portion that becomes the bottom surface of the frame 2 when the placement surface 31 of the table 3 is oriented vertically upward in a horizontal state. The bottom surface of the frame 2 is located vertically above the top of the waste box 7. In addition, the support portion 9 is provided so as to protrude from the plane including the one end 41 and the other end 42 of the fixed blade 4 out of the outer surface different from the placement surface 31 of the table 3 to the outside of the table 3. Protruding to the outside of the table 3 means protruding in the direction from the inside to the outside of the table 3.

  FIG. 6 is a plan view of the support portion 9 of the sheet cutting apparatus 1 shown in FIG. The support part 9 is a film. The support portion 9 is made of, for example, polyester. The shape of the support portion 9 is a comb shape, and the support portion 9 has a plurality of teeth 91, 92, and 93 as shown in FIGS. The plurality of teeth 91, 92, 93 are provided so as to protrude outward from the plane including the one end 41 and the other end 42 of the fixed blade 4 out of the outer surface different from the mounting surface 31 of the table 3. Yes. In addition, each of the plurality of teeth 91, 92, 93 is provided so as not to overlap in the vertical direction when the placement surface 31 of the table 3 is oriented vertically upward in a horizontal state. FIG. 6 shows a state in which the support portion 9 is viewed from vertically upward to vertically downward in that case. That is, FIG. 6 is a top view of the support portion 9.

  Further, the plurality of teeth 91, 92, 93 have a function of changing the posture from a horizontal state to a vertically lower side and a function of restoring when the placement surface 31 of the table 3 is oriented vertically upward in a horizontal state. . The support portion 9 has a fixing portion 94, and the plurality of teeth 91, 92, 93 are provided so as to protrude from the fixing portion 94. The fixing portion 94 is attached to the bottom surface of the frame 2. The fixing portion 94 is attached to the bottom surface of the frame 2 with an adhesive, for example. The support portion 9 is attached to the frame 2 by attaching the fixing portion 94 to the bottom surface of the frame 2. Note that the fixing portion 94 may be attached to the bottom surface of the frame 2 with screws or the like.

  As shown in FIGS. 4 and 6, the side portion of the support portion 9 on the side of the one end 41 of the fixed blade 4, that is, the tooth 91 of the support portion 9 is different from the placement surface 31 of the table 3. The outer surface is orthogonal to a plane including one end 41 and the other end 42 of the fixed blade 4. Of the side portions of the support portion 9, the side portion on the side of the other end 42 of the fixed blade 4, that is, the teeth 93 of the support portion 9 are also orthogonal to the above-described plane. As described with reference to FIG. 2, strip-like waste W is generated by cutting with the fixed blade 4 and the movable blade 5, and the waste W falls. The support portion 9 temporarily supports a part of the falling strip-like waste W.

  Next, the situation etc. where the waste W generated when the sheet S is cut and fallen into the waste box 7 will be described. As described with reference to FIGS. 1 and 2, the sheet cutting apparatus 1 sequentially cuts a plurality of stacked sheets S from one end portion CL1 to the other end portion CL2 of the cutting line CL. Therefore, strip-shaped waste W is generated. The waste W may adhere to the guide surface 61 of the guide plate 6 due to static electricity or the like. FIG. 7 shows a situation in which the waste W adheres to the guide surface 61 of the guide plate 6 of the sheet cutting apparatus 1 when the sheet S to be cut is cut by the sheet cutting apparatus 1 in the embodiment of the present invention. FIG.

  Furthermore, FIG. 7 shows a situation in which the sheet S is cut and the guide surface 61 of the guide plate 6 is about to fall down in conjunction with the movement of the movable blade 5 from vertically upward to vertically downward. . The sheet cutting apparatus 1 according to the present embodiment has a scraping unit 8. As described above, the scraping portion 8 is provided on the movable blade 5. Therefore, when the cutting process of the sheet S is performed, the movable blade 5 moves from vertically upward to vertically downward, so that the scraping unit 8 also moves vertically upward to vertically downward.

  The scraping unit 8 moves from vertically upward to vertically downward when the cutting process of the sheet S is performed, and thus scrapes the waste W adhering to the guide surface 61 of the guide plate 6 as shown in FIG. FIG. 8 is a diagram for explaining a situation where the scrap W attached to the guide surface 61 of the guide plate 6 is scraped off by the scraping unit 8 of the sheet cutting apparatus 1 of the present embodiment. That is, as shown in FIG. 8, the waste W adhering to the guide plate 6 can be removed by using the sheet cutting apparatus 1 of the present embodiment.

  As described above, the scraping portion 8 is formed of a conductive material, and thus can remove electricity from the charged waste W. Therefore, the scraping unit 8 can scrape off the waste W adhering to the guide surface 61 more easily. In addition, since the scraping-off part 8 is a brush, the scrap W adhering to the guide surface 61 can be rubbed. Therefore, the scraping unit 8 can scrape off the waste W adhering to the guide surface 61 more easily. The scraping unit 8 is provided at a position where the guide plate 6 does not contact the sheet S when the sheet S to be cut is guided to the placement surface 31 of the table 3. Therefore, the possibility of damaging the sheet S to be cut by the scraping unit 8 can be reduced.

  Next, the situation where the waste W generated when the sheet S is cut and dropped and stored in the waste box 7 will be described. As described with reference to FIGS. 1 and 2, the strip-shaped waste W is generated by cutting by the sheet cutting apparatus 1. The conventional sheet cutting apparatus is different from the sheet cutting apparatus 1 of the present embodiment in that the sheet cutting apparatus 1 of the present embodiment does not include the support portion 9 included in the sheet cutting apparatus 1 of the present embodiment. The sheet S is cut in the same manner as the sheet cutting apparatus 1 in the form, and thereby, strip-like waste W is generated.

  9A, 9B, and 9C, the situation where the waste W generated when the conventional sheet cutting apparatus cuts the sheet S falls and is stored in the waste box 7 will be described. FIG. 9A is a first view for explaining a situation in which waste W generated when a conventional sheet cutting apparatus cuts a sheet S falls and is stored in the waste box 7, and FIG. 9B is a diagram illustrating a conventional sheet cutting apparatus. FIG. 9C is a second diagram for explaining a situation in which waste W generated when the sheet S is cut and falls into the waste box 7, and FIG. 9C is generated when the conventional sheet cutting apparatus cuts the sheet S. It is FIG. 3 for demonstrating the condition where W falls and is accommodated in the waste box 7. FIG.

  9A shows the first situation of the sheet S cutting process, FIG. 9B shows the situation immediately before the end of the cutting process, and FIG. 9C shows the situation after the cutting process ends. 9A, 9B, and 9C show the front side of a conventional sheet cutting apparatus. In FIGS. 9A, 9B, and 9C, the fixed blade 4, the movable blade 5, the waste box 7, and the waste W are shown for ease of explanation. Only shown. The waste box 7 is indicated by a broken line to show the interior. The waste W generated by the cutting and the portion of the sheet S that becomes the waste W by the cutting are indicated by hatching. 9A, 9B, and 9C, the movement of the movable blade 5 is exaggerated in order to make the cutting process easier to understand.

  As shown in FIGS. 9A and 9B, the portion of the sheet S that is about to be cut is sandwiched between the fixed blade 4 and the movable blade 5 and supported by the fixed blade 4 and the movable blade 5. The waste W generated by the cutting hangs vertically downward due to gravity. Therefore, as shown in FIG. 9B, immediately before the end of cutting, the other end CL2 of the cutting line CL in the sheet S is supported by the fixed blade 4 and the movable blade 5, so that the waste W generated by the cutting is Without being separated from the sheet S, the other end 42 of the fixed blade 4 is positioned near the vertically lower side.

  Therefore, as shown in FIG. 9C, when cutting is finished, the waste W falls in a state of being biased vertically below the other end 42 of the fixed blade 4 and is stored in the waste box 7. As described above, since the waste box 7 is small, the last part of the waste W overflows from the waste box 7 in the vicinity of the lower end of the other end 42 of the fixed blade 4.

  On the other hand, the sheet cutting apparatus 1 according to the present embodiment has a support portion 9. 10A, 10B, and 10C, the situation where the waste W generated when the sheet cutting apparatus 1 having the support portion 9 cuts the sheet S falls and is stored in the waste box 7 will be described. FIG. 10A is a first diagram for explaining a situation in which waste W generated when the sheet cutting device 1 according to the embodiment of the present invention cuts a sheet S falls and is stored in the waste box 7. FIG. 10C is a second diagram for explaining a situation in which waste W generated when the sheet cutting device 1 according to the embodiment of the present invention cuts the sheet S falls and is stored in the waste box 7. FIG. 6 is a third diagram for explaining a situation where waste W generated when the sheet cutting device 1 of the embodiment cuts a sheet S falls and is stored in the waste box 7.

  10A shows the first situation of the sheet S cutting process, FIG. 10B shows the situation immediately before the end of the cutting process, and FIG. 10C shows the situation after the cutting process ends. 10A, 10B, and 10C show the front side of the sheet cutting apparatus 1 of the present embodiment. In FIGS. 10A, 10B, and 10C, in order to simplify the explanation, the fixed blade 4, the movable blade 5, the waste box 7, only the support part 9 and the waste W are shown. The waste box 7 is indicated by a broken line to show the interior. The waste W generated by the cutting and the portion of the sheet S that becomes the waste W by the cutting are indicated by hatching. 10A, 10B, and 10C, the movement of the movable blade 5 is exaggerated in order to make the cutting process easier to understand.

  As shown in FIGS. 10A and 10B, the portion of the sheet S that is about to be cut is sandwiched between the fixed blade 4 and the movable blade 5 and supported by the fixed blade 4 and the movable blade 5. The waste W generated by the cutting hangs vertically downward due to gravity. However, the sheet cutting apparatus 1 according to the present embodiment includes a support portion 9, and more specifically, the support portion 9 includes a plurality of support portions 9. The teeth 91, 92, and 93 temporarily support a part of the waste W that is generated by the cutting and hangs down. Therefore, as shown in FIG. 10B, even immediately before the end of cutting, the waste W generated by the cutting is not biased toward the vertically lower side of the other end 42 of the fixed blade 4. As a result, as shown in FIG. 10C, when cutting is completed, the waste W does not fall in a state of being biased vertically below the other end 42 of the fixed blade 4 and is stored in the waste box 7 in a state of less uneven distribution.

  Furthermore, as described above, the side portion of the support portion 9 on the side of the one end 41 of the fixed blade 4, that is, the tooth 91 of the support portion 9 is different from the placement surface 31 of the table 3. The outer surface is orthogonal to a plane including one end 41 and the other end 42 of the fixed blade 4. With this configuration, a part of the waste W that is generated by the cutting and hangs down is likely to be caught on the plurality of teeth 91, 92, 93 of the support portion 9. Therefore, more specifically, the support portion 9 can easily support the plurality of teeth 91, 92, and 93 temporarily supporting a part of the waste W that is generated by cutting and hangs down.

  Further, the side portion of the support portion 9 on the side of the other end 42 of the fixed blade 4, that is, the tooth 93 of the support portion 9 is also fixed on the outer surface different from the placement surface 31 of the table 3. The blade 4 is orthogonal to the plane including the one end 41 and the other end 42. With this configuration, the plurality of teeth 91, 92, 93 of the support portion 9 can be easily slid down vertically at the end of cutting and stored in the waste box 7 when the cutting is completed. Can be done.

  Furthermore, when the plurality of teeth 91, 92, 93 of the support portion 9 temporarily support the waste W that is generated by the cutting and hangs down, the placement surface 31 of the table 3 is horizontal due to the weight of the waste W. If it is facing vertically upward in a normal state, the posture is changed from a horizontal state to vertically downward. According to the configuration, the plurality of teeth 91, 92, 93 of the support portion 9 are caused to fall and hang down and temporarily support the scrap W that is supported by sliding down vertically when the cutting is completed. It can be done easily. In addition, since the support part 9 is formed of a film, when temporarily supporting the waste W, the posture is changed from a horizontal state to a vertically downward direction depending on the weight of the waste W. Restore after falling. Therefore, the function that the support portion 9 temporarily supports the waste W generated by the cutting and hanging down is maintained.

  As described above, the sheet cutting apparatus 1 according to the present embodiment includes the support portion 9. Therefore, when the sheet cutting apparatus 1 is used, the sheet S is moved from one end of the sheet S to another end. Even if it cuts in order, the uneven distribution of the waste W produced by the cutting can be made smaller and the waste W can be stored in the waste box 7. As a result, it is possible to suppress the waste W from overflowing from the waste box, and as a result, it is possible to make it difficult to cause problems in the subsequent cutting process or the like. In addition, the frequency | count of collection | recovery of the waste stored in the waste box can be suppressed.

(Modification)
The scraping part 8 in the sheet cutting apparatus 1 according to the above-described embodiment is provided on the surface of the movable blade 5 that does not contact the fixed blade 4. However, the scraping portion 8 may not be provided on the surface of the movable blade 5 that does not contact the fixed blade 4. The scraping portion 8 is provided on the side of the movable blade 5 that does not come into contact with the fixed blade 4 so as to protrude outward from the surface including the surface of the movable blade 5 that does not come into contact with the fixed blade 4. In the case where the movable blade 5 moves from vertically upward to vertically downward, it is sufficient if it moves from vertically upward to vertically downward to scrape off the waste W adhering to the guide plate 6.

  Therefore, the shape of the scraping portion 8 may not be a plate shape, and the scraping portion 8 is not provided in a state of being fixed to the movable blade 5 so that the state orthogonal to the movable blade 5 is maintained. May be. The scraping portion 8 preferably has a static elimination effect, but may not be formed of a conductive material. The scraping unit 8 may be a cloth instead of a brush. The scraping unit 8 may be attached to the movable blade 5 so as to be capable of swinging. The scraping unit 8 may be provided at a position where the guide plate 6 contacts the sheet S when the sheet S to be cut is guided to the placement surface 31 of the table 3. In that case, if the scraping-off portion 8 has a static elimination effect, the sheet S to be cut guided to the placement surface 31 of the table 3 can be neutralized, so that the waste W adheres to the guide plate 6. The possibility of doing so can be reduced.

  The sheet cutting apparatus 1 according to the above-described embodiment has a comb-shaped support portion 9. However, the sheet cutting apparatus 1 may have a trapezoidal support 9 </ b> A instead of the comb-shaped support 9. FIG. 11 is a plan view of the trapezoidal support portion 9A. The trapezoidal support portion 9A is a film, and is formed of, for example, polyester.

  The trapezoidal support portion 9A has a trapezoidal portion 95 that temporarily supports a part of the waste W that is caused by cutting and hangs down, like the teeth 91, 92, and 93 in the comb-shaped support portion 9. Similar to the comb-shaped support portion 9, the fixing portion 94 is provided. The trapezoidal support portion 9A is attached to the frame 2 by attaching the fixing portion 94 to the bottom surface of the frame 2 with an adhesive or a screw. The trapezoidal support 9 </ b> A has a function of changing the posture from a horizontal state to a vertically lower side and a function of restoring it when the placement surface 31 of the table 3 is in a horizontal state and is directed vertically upward.

  As shown in FIG. 11, the side portion 96 on the one end 41 side of the fixed blade 4 in the side portion of the trapezoidal support portion 9 </ b> A is formed on the fixed blade 4 on the outer surface different from the placement surface 31 of the table 3. It is orthogonal to the plane including the one end 41 and the other end 42. A part 97 of the side portion on the side of the other end 42 of the fixed blade 4 among the side portions of the trapezoidal support portion 9 </ b> A is tilted toward the one end 41 side of the fixed blade 4. More specifically, a portion 97 of the side portion of the trapezoidal support portion 9 </ b> A on the side of the other end 42 of the fixed blade 4 is orthogonal to the placement surface 31 of the stand 3 and is mounted on the stand 3. Of the outer surface different from the placement surface 31, the plane is perpendicular to the plane including the one end 41 and the other end 42 of the fixed blade 4, and falls to the plane including the one end 41 of the fixed blade 4.

  Alternatively, the sheet cutting apparatus 1 may include a support portion 9B having an L-shaped portion in part instead of the comb-shaped support portion 9. FIG. 12 is a perspective view of the sheet cutting apparatus 1 having a support portion 9B that partially includes an L-shaped part, and FIG. 13 includes an L-shaped part in a part of the sheet cutting apparatus 1 shown in FIG. It is a top view of the support part 9B. The support portion 9B is a plate-like member, and is formed of a resin such as ABS resin and is not easily deformed.

  The support portion 9B partially including an L-shaped portion temporarily supports a part of the waste W that is generated by cutting and hangs down, like the teeth 91, 92, and 93 in the comb-shaped support portion 9. In addition to the L-shaped portion 98, the fixing portion 94 is provided in the same manner as the comb-shaped support portion 9. The support portion 9B is attached to the frame 2 by attaching the fixing portion 94 to the bottom surface of the frame 2 with an adhesive or a screw. When the support portion 9B is attached to the bottom surface of the frame 2, the L-shaped portion 98 of the support portion 9B is vertical from the horizontal state when the mounting surface 31 of the table 3 is oriented vertically upward. Inclined downward. For example, the L-shaped portion 98 of the support portion 9B is inclined 45 ° vertically downward.

  As shown in FIGS. 12 and 13, a part 99 of the side portion on the one end 41 side of the fixed blade 4 among the side portions of the L-shaped portion 98 in the support portion 9 </ b> B falls to the one end 41 side of the fixed blade 4. ing. In more detail, a part 99 of the side part on the one end 41 side of the fixed blade 4 in the side part of the L-shaped part 98 is bent and orthogonal to the mounting surface 31 of the table 3 and the table. 3 is a plane perpendicular to the plane including the one end 41 and the other end 42 of the fixed blade 4 out of the outer surface different from the mounting surface 31, and is tilted to the plane including the one end 41 of the fixed blade 4. Of the side portions of the L-shaped portion 98, the side portion 100 on the other end 42 side of the fixed blade 4 is also tilted by being inclined toward the one end 41 side of the fixed blade 4. The support portion 9B may be a plate-like member made of metal or a film made of polyester. Further, when the frame 2 is made of metal, the support portion 9B may be formed integrally with the frame 2.

  Alternatively, the sheet cutting apparatus 1 may include a second support portion 9 </ b> C having an L-shaped portion in part instead of the comb-shaped support portion 9. FIG. 14 is a perspective view of the sheet cutting apparatus 1 having a second support portion 9C partially including an L-shaped portion. 15A is a plan view of the second support portion 9C including an L-shaped portion in a part of the sheet cutting apparatus 1 shown in FIG. 14, and FIG. 15B is a part of the sheet cutting apparatus 1 shown in FIG. 15C is a side view of the second support portion 9C including an L-shaped portion, and FIG. 15C illustrates the second support portion 9C including an L-shaped portion as a part of the sheet cutting apparatus 1 illustrated in FIG. It is a perspective view. 15B and 15C indicate a state where an L-shaped portion 98 described later is positioned substantially horizontally.

  The second support portion 9C partially having an L-shaped portion includes an L-shaped portion 98 and a fixing portion 94, similarly to the support portion 9B. The L-shaped portion 98 is a plate-like member, and the L-shaped portion 98 and the fixing portion 94 are integrally formed of a resin such as ABS resin. The support portion 9 </ b> C further includes an attachment portion 103 having a hinge 101 and a spring 102. As shown in FIGS. 14, 15 </ b> A, 15 </ b> B, and 15 </ b> C, the hinge 101 is attached to the fixed portion 94, and the spring 102 is attached vertically below the L-shaped portion 98 and the fixed portion 94.

  Similarly to the support portion 9B, the support portion 9C is attached to the frame 2 by attaching the fixing portion 94 to the bottom surface of the frame 2 as the holding portion. At that time, when the mounting surface 31 of the table 3 is in the horizontal state and faces vertically upward, the L-shaped portion 98 is positioned horizontally, and the spring 102 is positioned vertically below the L-shaped portion 98. The support portion 9C is attached to the frame 2.

  Alternatively, the sheet cutting apparatus 1 may include a massive support portion 9 </ b> D instead of the comb-like support portion 9. FIG. 16 is a perspective view of the massive support portion 9D. The upper surface of the massive support portion 9D is a flat surface, and is inclined downward in the vertical direction when the mounting surface 31 of the table 3 is oriented vertically upward in a horizontal state. In addition, a part 104 of the side portion on the one end 41 side of the fixed blade 4 among the side portions of the massive support portion 9 </ b> D is tilted toward the one end 41 side of the fixed blade 4. More specifically, the part 104 is bent in a state where it is perpendicular to the placement surface 31 of the table 3 and different from the placement surface 31 of the table 3, one end 41 and the other end of the fixed blade 4. 42 is a plane perpendicular to the plane including 42 and is tilted to the plane including the one end 41 of the fixed blade 4.

  As described above, in the support portions 9 </ b> A, 9 </ b> B, 9 </ b> C, and 9 </ b> D, the side portion on the one end 41 side of the fixed blade 4 is the one end 41 and the other end of the fixed blade 4 on the outer surface different from the placement surface 31 of the table 3. It is orthogonal to the plane including 42, or at least a part of the side portion on the one end 41 side of the fixed blade 4 is tilted to the one end 41 side of the fixed blade 4. With this configuration, the waste W that is generated by the cutting and hangs down is easily caught on the support portions 9A, 9B, 9C, and 9D. That is, the support portions 9A, 9B, 9C, and 9D can easily support a part of the waste W that is generated by the cutting and hangs down.

  Further, as described above, in the support portions 9A, 9B, 9C, and 9D, the side portion on the other end 42 side of the fixed blade 4 has one end 41 of the fixed blade 4 on the outer surface different from the placement surface 31 of the table 3 and It is orthogonal to the plane including the other end 42, or at least a part of the side portion of the fixed blade 4 on the other end 42 side is inclined to the one end 41 side of the fixed blade 4. With this configuration, the support portions 9A, 9B, 9C, and 9D can easily slide the waste W that is suspended and temporarily supported by the cutting into the waste box 7 by sliding vertically downward at the end of the cutting. be able to.

  Furthermore, as described above, when the supporting portions 9A and 9C temporarily support the waste W that is generated by cutting and hangs down, the placement surface 31 of the table 3 is horizontal due to the weight of the waste W. If it is facing vertically upward in the state, the posture is changed from the horizontal state to vertically downward. The upper surfaces of the support portions 9B and 9D are inclined vertically downward. With this configuration, the support portions 9A, 9B, 9C, and 9D can easily slide the waste W that is suspended and temporarily supported by the cutting into the waste box 7 by sliding vertically downward at the end of the cutting. be able to.

  In addition, since the support portion 9A is formed of a film, when the waste W is temporarily supported, the posture is changed from a horizontal state to a vertically downward direction depending on the weight of the waste W, but the waste W falls to the waste box 7. To restore after. Therefore, the function of temporarily supporting the waste W from which the support portion 9A hangs down is maintained. Since the support portion 9C has the spring 102, the function of restoring the waste W about the support portion 9C after dropping into the waste box 7 is maintained for a longer period than the support portions 9 and 9A.

  A support part is not limited to what was mentioned above, For example, a rod-shaped thing may be sufficient.

  In the embodiment described above, the support portion 9 is vertical from the uppermost portion of the waste box 7 that is disposed vertically below the fixed blade 4 when the mounting surface 31 of the table 3 is oriented vertically upward in a horizontal state. Located above. As such, the support portion is located vertically above the bottom surface of the waste bin 7 in the above-described case. For example, the support portion may be provided on the inner surface of the waste box 7.

  The support portion may be formed of a conductive material such as aluminum. In that case, the support part can perform static elimination even if the waste W that is caused by cutting and hangs down and is temporarily supported is charged, and easily puts the waste W in the waste box 7 at the end of cutting. be able to.

  In the embodiment described above, the movable blade 5 is a plate-shaped blade. However, the movable blade 5 may not be a plate-shaped blade.

  In the above-described embodiment, the sheet cutting apparatus 1 is arranged at the rear stage of the image forming apparatus. However, the sheet cutting apparatus 1 of the present embodiment is not limited as long as it is arranged at the subsequent stage of the image forming apparatus. When the sheet cutting apparatus 1 is arranged at the rear stage of the image forming apparatus, the guide plate 6 guides the sheet S to be cut to the placement surface 31 of the table 3, but the sheet cutting apparatus 1 is arranged at the rear stage of the image forming apparatus. If not, the guide plate 6 may not be used. However, since the guide plate 6 also functions as an auxiliary portion that supports the portion protruding from the table 3 in the sheet S to be cut placed on the placement surface 31 of the table 3, the sheet cutting device 1. When the sheet is not arranged at the rear stage of the image forming apparatus, as an alternative to the guide plate 6, a part of the sheet S to be cut placed on the placement surface 31 of the table 3 that protrudes from the table 3 is supported as an auxiliary. An auxiliary part is used.

  The present invention is not limited to the embodiments described above, and various modifications can be made to the embodiments based on the spirit of the present invention, and modifications are not excluded from the technical scope of the present invention.

  Since the present invention relates to a sheet cutting apparatus that cuts a sheet during bookbinding, it has industrial applicability.

DESCRIPTION OF SYMBOLS 1 Sheet cutting device 2 Frame 3 units 4 Fixed blade 5 Movable blade 6 Guide plate 7 Waste box 8 Scraping part 9 Support part 91,92,93 Teeth 31 Placement surface 41 One end 42 The other end

Claims (5)

A table on which a sheet to be cut is placed and has a placing surface facing upward in the vertical direction in a substantially horizontal state;
A band-shaped fixed blade extending from one end side of the table to the other end side ;
Wherein close to the fixed blade in order from the side of the one end of the fixed blade on the side of the other end, the fixed blade and cooperates, the sheet prior Symbol fixed blade mounted on the mounting surface of the base A movable blade that sequentially cuts from one end side to the other end side,
Between the one end and the other end of the fixed blade, a support that is positioned vertically below the fixed blade and vertically above a bottom surface of a waste box disposed below the fixed blade in the vertical direction. and parts, the possess,
The support part is
Projecting in a direction perpendicular to the plane containing the other end of the one end and the fixed blade of the fixed blade on the outer surface adjacent to said platform of the mounting surface,
The side near the one end of the fixed blade and the other end of the fixed blade that at least one is inclined with respect to the surface and temporarily supports a part of the scrap generated by cutting by the fixed blade and the movable blade and a side near portion,
A sheet cutting apparatus characterized by that . The support part is a film,
The sheet cutting device according to claim 1, wherein the support portion has a function of changing a posture from a substantially horizontal state to a vertically downward direction and a function of restoring. The shape of the support portion is a comb shape composed of a plurality of teeth,
The sheet cutting device according to claim 2, wherein each of the plurality of teeth of the support portion is arranged so as not to overlap in the vertical direction. A holding part to which the support part is attached;
The support part is a plate-like member that temporarily supports a part of scrap generated by cutting by the fixed blade and the movable blade;
An attachment portion that is attached to the holding portion and includes a hinge and a spring for positioning the plate-like member substantially horizontally ;
The sheet cutting device according to claim 1, comprising:   The sheet cutting device according to claim 1, wherein an upper surface of the support portion is inclined downward in the vertical direction.

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