JP2012135947A - Blade, binding machine, and paper sheet bundle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a binding machine which can solve or prevent trouble in which the base end of a cut and raised piece is easily fractured in binding paper sheets, and a blade used for the same.SOLUTION: The binding machine 1 is structured such that a plurality of paper sheets P can be bound with one another by engagement of a cut and raised piece P5 formed on each paper sheet P by a punching blade 32 being a blade with a cut hole P2 formed on the paper sheet P by a cutting blade 33, wherein the punching blade 32 includes auxiliary blade parts 38 for forming, on the paper sheet P, a break preventing escape part P6 for relaxing stress concentration on the base end P52 of the cut and raised piece P5 in inserting the cut and raised piece P5 into the cut hole P2.

Description

  The present invention relates to a binding machine referred to as a so-called stapleless stapler of a type that does not use a metal needle among binding machines that integrally bind the ends of a plurality of stacked sheets, and this binding. The present invention relates to a blade used in a machine and a sheet bundle.

  Conventionally, as a binding machine of this type, a punching blade and a cutting blade are passed through a plurality of sheets to form punched holes and cut holes in the sheets, and the cut and raised pieces cut and raised from the punched holes are When the cutting blade is inserted into the window formed in the cutting blade, and the cutting blade is removed from the paper, the leading end portion of the cutting piece inserted in the window is inserted into the cut hole, and the cutting piece and the cut hole are inserted. There is known a technique in which a plurality of sheets can be bound to each other by engaging with (see, for example, Patent Document 1).

  In such a binding machine, the cutting piece is cut by the cutting blade by inserting the cutting piece into the window of the cutting blade that has penetrated the paper and then removing the cutting blade from the paper. Guided by the holes, the cut and raised pieces and the cut holes are engaged so that a plurality of sheets can be bound together.

  However, in the conventional one, when binding a plurality of sheets, the force in the surface direction given from the cutting blade due to the paper quality, the paper thickness, etc. is excessively concentrated on the base end of the cut and raised pieces. In some cases, the proximal end was broken.

JP 2010-228451 A

  The present invention has been made by paying attention to the above situation, and is used in a binding machine that can eliminate or suppress the possibility of breakage of a cut and raised piece when binding sheets, and the binding machine. An object of the present invention is to provide a sheet bundle in which the possibility of breakage of blades and cut and raised pieces is eliminated or suppressed.

  That is, the binding machine of the present invention has the following configuration.

  In the invention according to claim 1, the punching hole and the cut hole are formed in a plurality of sheets, and the leading end portion of the cut and raised piece cut and raised from the punched hole is inserted into the cut hole. A blade capable of forming the punching hole used in a binding machine that is capable of binding a plurality of sheets to each other by engaging with the cutting hole, the blade body forming the punching hole, and the cutting body Continuously extending laterally from the base end of the blade main body for forming a break-off relief portion on the paper that relaxes stress concentration on the base end of the cut and raised piece when the piece is inserted through the cut hole. And an auxiliary blade portion that extends.

  Here, the “paper” may be any sheet as long as it is in the form of a sheet, and includes paper and plastic or metal.

  According to a second aspect of the present invention, a punching blade and a cutting blade are passed through a plurality of sheets to form punched holes and cut holes in the sheets, and the cut and raised pieces cut and raised from the punched holes are cut into the cut and raised pieces. Inserting into the window formed in the cutting blade, when the cutting blade is removed from the paper, the tip of the cutting piece inserted in the window is inserted into the cut hole, the cutting and cutting piece and the cut hole, A binding machine capable of binding the plurality of sheets to each other by engaging with each other, wherein the punching blade inserts the cut and raised piece into the cut hole. It is provided with an auxiliary blade portion for forming a relief portion for suppressing tearing on the paper to relieve stress concentration on the paper.

  According to a third aspect of the present invention, in the configuration according to the second aspect, the relief portion has a slit shape extending laterally from a base end of the punching hole, and the auxiliary blade for forming the relief portion The portion has a blade-like shape that continuously extends laterally from the base end of the blade body of the punching blade.

  According to a fourth aspect of the present invention, in the configuration according to the third aspect, the blade body and the blade auxiliary portion are integrally formed using a common sheet metal material.

  According to a fifth aspect of the present invention, in the configuration according to the third or fourth aspect, the cut and raised piece includes a front end region including the front end portion, and a widest widest portion of the front end region that is continuous with the front end region. The blade body has a distal end region forming portion for forming the distal end region, and the base formed continuously to the distal end region forming portion. And a base region forming part for forming the end region.

  The invention according to claim 6 is the configuration according to claim 2, 3, 4 or 5, wherein the blade auxiliary portion extends in a direction orthogonal to the longitudinal direction of the cut and raised piece.

  In the invention according to claim 7, the cut and raised pieces cut and raised in the paper are inserted into the cut holes formed in the paper, and the plurality of sheets are mutually connected by the engagement between the cut and raised pieces and the cut holes. A bundle of sheets that are bound together, wherein a base portion of the cut-and-raised piece on the sheet is provided with an escape portion for suppressing tearing.

  As described above, according to the present invention, it is possible to eliminate or suppress the problem that the base end of the cut and raised piece is easily broken when binding sheets.

1 is an overall perspective view of a binding machine according to a first embodiment of the present invention. The side view of the binding machine of the embodiment. The top view of the binding machine of the embodiment. XX sectional drawing in FIG. The enlarged plan view of the corner | angular part of the paper using the binding machine of the embodiment. The YY sectional view taken on the line in FIG. The disassembled perspective view which shows the principal part of the embodiment. The side view which shows the blade drive mechanism of the embodiment. The top view which shows the principal part of the embodiment. The top view which shows typically the punching hole and cut hole of the embodiment. The perspective view which shows the cutting blade of the embodiment. The front view which shows the cutting blade of the embodiment. ZZ sectional drawing in FIG. 3 of a state which does not operate an operation lever. ZZ sectional drawing in FIG. 3 of the state which operated the operation lever. Schematic which shows the action | operation of the binding machine of the embodiment. Schematic which shows the action | operation of the binding machine of the embodiment. Schematic which shows the action | operation of the binding machine of the embodiment. Schematic which shows the action | operation of the binding machine of the embodiment. Schematic which shows the action | operation of the binding machine of the embodiment. Schematic which shows the action | operation of the binding machine of the embodiment. Schematic which shows the action | operation of the binding machine of the embodiment. The expansion perspective view for demonstrating the action | operation of the binding machine of the embodiment. The expansion perspective view for demonstrating the action | operation of the binding machine of the embodiment. The whole top view of the binding machine concerning 2nd Embodiment of this invention. The sectional side view which shows typically the principal part of the binding machine of the embodiment. The top view which shows typically the punching hole which is 1st Embodiment. The top view which shows typically the punching hole which is other embodiment. The top view which shows typically the punching hole which is other embodiment. The top view which shows typically the punching hole which is other embodiment. The top view which shows typically the punching hole which is other embodiment. The top view which shows typically the punching hole which is other embodiment. The top view which shows typically the punching hole which is other embodiment.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 23, the binding machine 1 forms punch holes P1 and cut holes P2 in a plurality of sheets of paper P, and cuts and raises pieces P5 cut and raised from the punch holes P1. By inserting it into the hole P2, the plurality of sheets P are bound together so that a booklet B, that is, a sheet bundle, can be formed. The punching blade 32, which is a blade used in the binding machine 1, can form the punching hole P1. Details will be described below.

<Booklet>
As shown in FIGS. 4 to 6 and FIG. 21, this booklet B is formed by bundling a plurality of sheets P, and these sheets P are mutually connected at one joint P3 set at the corner P4. It is joined. The joining portion P3 includes a punching hole P1 formed in each paper P by a punching blade 32 penetrating from the one surface Pa side of the paper P, and a lifting hole formed in each paper P adjacent to the punching hole P1. It is composed of a cut hole P2 and a cut and raised piece P5 cut and raised from the punching hole P1 to the other surface Pb side of the paper P. Then, by leading the leading end P51 side of the cut and raised piece P5 through the cut hole P2 to the one surface Pa side of the sheet P, the corners P4 of the plurality of sheets P are joined to each other. Yes. As will be described in detail later, the sheet bundle as the booklet B is inserted between the cut and raised pieces P5 cut and raised in the paper P through the cut holes P2 formed in the paper P, and the cut and raised pieces P5 and the cut holes P2 are separated. A plurality of sheets P are bound to each other by the engagement, and the base end P52 of the cut-and-raised piece P5 of the sheet P is provided with a break-off escape portion P6.

  In addition, a various aspect can be considered about a junction part, and it is not restricted to what was mentioned above.

<Cutting piece>
As shown in FIGS. 4 to 6, 22, and 23, the cut and raised piece P <b> 5 has a shape in which the distal end side swells, specifically, an arrow shape as a whole, and a base end P <b> 52 across the boundary P <b> 53. A proximal end region P54 is provided on the side, and a distal end region P55 is provided on the distal end P51 side. The base end region P54 has a substantially rectangular shape, and is set to the same width W6 from the base end P52 of the cut and raised piece P5 to the boundary portion P53. That is, the side edges P50 that form the left-right pair of the base end region P54 are parallel to each other. The distal end region P55 is integrally formed from the boundary portion P53 side of the proximal end region P54, and has a polygonal shape with a sharpened distal end P51. The leading end region P55 includes a wide portion P56 having a width dimension W3 larger than the boundary portion P53 and the leading end P51 from the boundary portion P53 to the leading end P51 of the cut and raised piece P5. In other words, the tip region P55 includes a tip corner P58 at the tip edge provided at the center in the width direction of the cut and raised piece P5, and side edge corners P59 paired with the left and right side edges of the wide portion P56. It is equipped with. Note that the “corner portion” referred to here is not limited to an angular portion, but includes a slightly rounded portion.

  In addition, various aspects can be considered for a cutting and raising piece, and it is not restricted to what was mentioned above.

<Punching hole>
The punching hole P1 has a size and shape corresponding to the cut and raised piece P5 as shown in FIGS. 4 to 6, 10, 22, and 23. It is a slit-shaped object corresponding to the shape of the punching blade 32, and after the cut and raised piece P5 is cut and raised, it is an arrow-shaped space corresponding to the shape of the cut and raised piece P5. More specifically, this punching hole P1 is formed continuously with the distal end region slit P11 corresponding to the distal end region P55 of the cut and raised piece P5, and the proximal end region P54 of the cut and raised piece P5. And a proximal end region slit P12 which forms a pair corresponding to the. In the present embodiment, for preventing breakage, the stress concentration on the base end P52 of the cut and raised piece P5 is reduced when the cut and raised piece P5 is inserted into the cut hole P2 so as to be continuous with the base end P52 of the punching hole P1. The relief portion P6 is provided.

  In addition, various aspects can be considered for a punching hole, and it is not restricted to what was mentioned above.

<Escape section>
As shown in FIGS. 4, 5, 10, 22, and 23, the escape portion P <b> 6 extends laterally from the base end P <b> 13 of the punching hole P <b> 1. It is a slit-like thing extending in In other words, the relief portion P6 is formed continuously with the proximal end region slit P12 of the punching hole P1, and extends linearly in a direction orthogonal to the longitudinal direction of the cut and raised piece P5. In the present embodiment, an angle α formed by the slit-shaped relief portion P6 and the proximal end region slit P12 of the punching hole P1 is approximately 90 degrees. The distance W4 between the tips of the slits constituting the left and right relief portions P6 is larger than the width dimension of the punching hole P1, and in this embodiment, the width of the wide portion P56 which is the widest portion of the punching hole P1. It is larger than the dimension W3. Further, the extension dimension W5 of each slit constituting the left and right relief portions P6 is substantially the same as the width dimension W6 of the base end P52 of the cut and raised piece P5. In the periphery of the punching hole P1 in the paper P, as shown in FIGS. 5, 22 and 23, a cantilever piece P9 having a triangular shape is formed by a proximal end region slit P12 of the punching hole P1 and a slit-like relief portion P6. Is formed.

  In addition, various aspects can be considered for an escape part, and it is not restricted to what was mentioned above.

<Cut hole>
On the other hand, as shown in FIGS. 4 to 6, 10, 22 and 23, the cut hole P2 includes a first slit L1 for mainly engaging the cut and raised piece P5, and the first slit L1. And a second slit L2 paired in the left-right direction that is bent and extended in the direction of the punching hole P1. The first slit L1 includes a linear main slit L11 and a sub slit L12 that bends and extends from both ends of the main slit L11 in a predetermined direction, that is, in a direction opposite to the second slit L2. . The second slit L2 extends from a boundary portion between the main slit L11 and the sub slit L12. In the present embodiment, the angle β1 between the main slit L11 and the sub slit L12 is set to approximately 135 degrees. Further, in the cut hole P2, the first slit L1 and the second slit L2 form a certain angle. Specifically, the cut slit P2 is formed between the main slit and the second slit of the first slit. The angle β2 between them is set to approximately 90 degrees, and the angle β3 between the sub slits of the first slit and the second slit is set to approximately 135 degrees. In this embodiment, the length of the sub-slit L12 in the first slit L1 is longer than the length of the second slit L2, and the length of the second slit L2 that makes a pair is substantially the same. It is set to. Further, the separation distance W2 of the paired second slits L2 is set to be substantially the same as or slightly longer than the width dimension W6 of the base end region P54 of the cut and raised piece P5.

  As shown in FIGS. 5 and 6, cantilever pieces P7 and P8 are formed around the cut hole P2 of the paper P by the first slit L1 and the second slit L2. The cantilever piece P7 formed by the main slit L11 and the second slit L2 of the first slit L1 has a rectangular shape, and the free end side can be displaced in the vertical direction with the punching hole P1 side as a base end. ing. The cantilever P8 formed by the sub slit L12 and the second slit L2 of the first slit L1 has a triangular shape, and the outer end of the first slit L1 and the tip of the second slit L2 The free end side can be displaced in the vertical direction with the portion connecting the two as the base end.

  In the state where the cut and raised piece P5 is passed through the cut hole P2 and the paper P is bound, the leading end P51 side of the cut and raised piece P5 is engaged with the first slit L1, as shown in FIGS. In addition, the edge from the wide portion P56 to the base end P52 of the cut and raised piece P5 is engaged with the second slit L2. More specifically, with respect to the first slit L1, the leading end P51 of the cut and raised piece P5 is positioned on the one surface Pa side, and the base end P52 and the boundary portion P53 of the cut and raised piece P5 are on the other surface Pb side. It is related to be located. For the second slit L2, the outer end P57 of the wide portion P56 of the cut and raised piece P5 is located on the one surface Pa side, and the base end P52 and the boundary portion P53 of the cut and raised piece P5 are on the other surface Pb side. It is engaged so that it is located in. In other words, among the edges from the wide portion P56 to the base end P52 of the cut and raised piece P5, the outer end P57 side of the wide portion P56 is positioned on the lower surface side of the cantilever piece P8 and the boundary portion P53 is cantilevered. It is located on the upper surface side of the piece P7.

  Further, the wide portion P56 of the cut and raised piece P5 is located on the side farther from the punching hole P1 than the tip L21 of the second slit L2, and the width dimension W3 of the wide portion P56 is a window D3 described later. It is smaller than the width dimension W1 of the corresponding part. Further, the outer end P57 of the wide portion P56 is located outside the second slit L2.

  In addition, various aspects can be considered for a cut hole, and it is not restricted to what was mentioned above.

<Binding machine>
The binding machine 1 used when binding the paper P in this way will be described with reference to FIGS. 1 to 4, 7 to 9, and FIGS. 11 to 23.

  Note that various forms of the binding machine are conceivable and are not limited to those described below.

  As shown in FIGS. 1 to 4, 7 to 9, and FIGS. 11 to 23, the binding machine 1 forms a punching hole P 1 while forming cut and raised pieces P 5 on a plurality of sheets P. A punching blade 32, a cutting blade 33 provided adjacent to the punching blade 32 and for forming a cut hole P2 for locking the tip P51 side of the cut and raised piece P5, and the punching blade 32 and the cutting The base portion 2 that holds the blade 33 and the punch base 4 disposed on the base portion 2 via a paper insertion gap 35 are provided. Then, the punching blade 32 and the cutting blade 33 held by the base portion 2 are driven so as to penetrate the paper P inserted into the paper insertion gap 35 and protrude toward the punch table 4 side. Thus, a punching hole P1 and a cut hole P2 are formed in the paper P. Next, the cutting blade 33 and the punching blade 32 are connected to the base portion in a state where the tip P51 side of the cut and raised piece P5 cut and raised from the punching hole P1 to the punch base 4 is engaged with the cutting blade 33. By pulling out the sheet P so as to return to the second side, the cut and raised pieces P5 are passed through the cut holes P2 to bind the paper P. In other words, the binding machine 1 is for making a booklet B by joining a plurality of sheets of paper P. The binding machine 1 temporarily moves upward from the standby position (N) to the protruding side so that the punching hole is formed. A punching blade 32 and a cutting blade 33 for forming P1 and a cut hole P2, a base portion 2 for housing the punching blade 32 and the cutting blade 33 at the standby position (N), the punching blade 32 and the cutting blade A slide member 31 that holds the insert blade 33 and can be moved up and down in the up-and-down direction that is the protruding and retracting direction with respect to the base portion 2, and a gap for inserting the paper P on the upward surface F14 side that is the outer surface side of the base portion 2 And a punch base 4 disposed via 35. An operation lever 5 is rotatably attached to the base portion 2, and a link mechanism 6 connected to the operation lever 5 is accommodated inside the base portion 2.

<Base part>
As shown in FIG. 1, FIG. 2, FIG. 4, FIG. 13 and FIG. 14, the base portion 2 includes a base frame 21 having a space in which the slide member 31 and the link mechanism 6 are arranged, and the base frame. 21 and a base cover 22 fitted on the lower side.

  As shown in FIGS. 1, 4, and 13 to 21, the base frame 21 is positioned above the operation lever 5 and the front housing F that forms the upward surface F <b> 14 of the base portion 2. And a rear housing R that forms a handle portion to which a hand is put in operation, and is integrally formed of synthetic resin.

  As shown in FIGS. 4 and 13 to 21, the front housing F is suspended from the top wall F1, the front wall F2 depending from the front edge of the ceiling wall F1, and the left and right edges of the ceiling wall F1. The left and right side walls F3 are provided, and a space for accommodating the blade unit 3 is provided inside. The ceiling wall F1 has an opening F11 through which the punching blade 32 and the cutting blade 33 pass. On the lower surface side of the ceiling wall F1, a bearing portion (not shown) provided near the edge of the opening F11 for receiving a shaft 341 of an inner cam 34 described later, and an inner cam 34 provided adjacent to the bearing portion. A locking wall F13 for locking the arm 344 is provided. A gap 35 for inserting the paper P is formed between the upward surface F14 which is the upper surface of the top wall F1 and the downward surface 414 of the punch table 4. In this embodiment, a raised portion F15 for clamping the joining portion P13 from below is provided at a portion of the upward surface F14 of the top wall F1 located on the paper insertion side with respect to the opening F11. The raised portion F15 is formed integrally with the base frame 21, and includes an inclined surface F16 for guiding the cut and raised piece P5 when the paper P inserted into the gap 35 is extracted. The side wall F3 is provided with a rail groove F31 for guiding the slide member 31 in the vertical direction on the front side, and a long hole F32 for guiding the drive shaft 36 in the vertical direction at the center. Yes. The operation lever 5 is attached to the side wall F3 via a lower support shaft 53 so as to be rotatable in the vertical direction. Further, a paper insertion gap 35 for inserting the paper P is formed between the upper surface of the top wall F1 of the front housing F and an anvil 41 described later.

  As shown in FIGS. 4, 13, and 14, the rear housing R has a shape suitable for placing a hand, and a front wall R <b> 1 rising from the rear end of the top wall F <b> 1 of the front housing F, A ceiling wall R2 extending rearward from the upper end of the front wall R1, left and right side walls R3 hanging from the left and right ends of the ceiling wall R2, and a rear wall R4 hanging from the rear end of the ceiling wall R2. A space for accommodating the link mechanism 6 is provided inside. A first link member 61 is rotatably attached to the side wall R3 via an upper support shaft 27.

  As shown in FIGS. 1, 2, 13, and 14, the base cover 22 is externally fitted to the lower side of the base frame 21, and the base cover 22 and the base frame 21 have a front end portion and a rear end portion. The engaging claws 23a and 23b provided at the ends are engaged with each other. The base cover 22 includes a slide cover mounting portion 25 on the front side, a cap mounting portion 26 in the center, and a window 24 for avoiding interference with the operation lever 5 adjacent to the cap mounting portion 26. ing. Note that a slide cover 28 that can be opened and closed is attached to the slide cover mounting portion 25 in order to remove paper dust accumulated in the front housing F to the outside. Further, a cap 29 for attaching the base cover 22 to the base frame 21 is attached to the cap attaching portion 26. That is, the top case 42 and the base cover 22 are detachably attached to the base frame 21 by screwing the screws 20 passed through the cap 29 into screw portions (not shown) provided in the top case 42.

  In addition, various aspects can be considered for a base part, and it is not restricted to what was mentioned above.

  The blade unit 3 having the punching blade 32 and the cutting blade 33 is housed in the base frame 21 thus formed.

<Blade unit>
As shown in FIGS. 7, 8, 10, and 13 to 21, the blade unit 3 is guided by the rail groove F31 of the base frame 21 and can be moved up and down while maintaining a vertical posture. The punching blade 32 attached to the slide member 31, the cutting blade 33 disposed adjacent to the punching blade 32, and the initial posture (inside the punching blade 32, which fits in the punching blade 32 ( The inner cam 34 pivotally supported by the slide member 31 via a shaft 341 between the rotating posture (K) protruding from the punching blade 32 to the initial posture (S). And a coil spring S2 for rotating and biasing the inner cam 34 in the returning direction.

  In addition, various aspects can be considered for a blade unit, and it is not restricted to what was mentioned above.

  As shown in FIGS. 7, 8, and 13 to 21, the slide member 31 is a block-like member having a protrusion 311 that engages with the rail groove F <b> 31 of the base frame 21 so as to be slidable in the vertical direction. Thus, it is connected to the link mechanism 6 via the drive shaft 36. That is, the drive shaft 36 is engaged with a long hole 614 provided at the tip of the first link member 61 of the link mechanism 6. The slide member 31 is a box-shaped member opened upward, and can accommodate the lower half of the punching blade 32 and the cutting blade 33.

  In addition, various aspects can be considered for a slide member, and it is not restricted to what was mentioned above.

<Incision blade of blade unit>
The cutting blade 33 includes a blade body 39 having a blade edge 391 for forming a cut hole P2 having a clog shape as shown in FIGS. 4, 5, and 10. Specifically, the cutting blade 33 having the blade body 39 is formed by punching and bending a single sheet metal material as shown in FIGS. 4, 7 to 9, and 11 to 23. The first blade D1 for forming the first slit L1 and the second slit L2 extending in the direction of the punching hole P1 from the middle of the first slit L1 are formed. And a second blade D2 for the purpose. Each of the first blade D1 and the second blade D2 includes the blade body 39 having a single-edged structure having a blade edge 391 on one side in the thickness direction of the material.

  The blade body is not limited to the one-blade structure, and the second blade D2 may not include the blade body 39 and the blade edge 391.

  In the present embodiment, the first blade D1 includes a window D3 for allowing the cut and raised piece P5 punched out from the paper P to pass therethrough and for engaging the cut and raised piece P5. The first blade D1 is provided with a main blade D11 for forming a linear main slit L11 and an extraction blade 32 corresponding to the cutting blade 33 in the other direction from both ends of the main slit L11. And a sub-blade D12 for forming a sub-slit L12 that bends and extends in a direction opposite to the opposite side.

  The main blade D11 of the first blade D1 is divided into a lower blade portion D4 and an upper blade portion D5 through a window D3 for receiving the inner cam 34, and the lower blade portion D4 and the upper blade portion D5. Are structurally connected by a sub-blade D12. In this embodiment, the sub blade D12 has a base end edge that is integrally continuous with the main blade D11, and a portion corresponding to the window D3 in the base end edge of the sub blade D12 is provided with the second blade. The blade D2 is formed continuously. That is, the second blade D2 is integrally cut and raised from the window D3 by bending a sheet metal material at the folding line portion D6.

  In addition, various aspects can be considered for a cutting blade, and it is not restricted to what was mentioned above.

<Cut blade window>
As shown in FIGS. 7, 8, 11, 12, and 15 to 21, the window D3 includes a second blade D2 for forming a second slit L2 on both left and right edges. It consists of a width part D31 and a widened part D32 provided adjacent to the reduced width part D31. In the present embodiment, the widened portion D32 is provided on both upper and lower sides of the reduced width portion D31, that is, on the distal end side and the proximal end side of the cutting blade 33, and the second edge is provided on the side edge. The structure does not include the blade D2. The reduced width portion D31 of the window D3 is formed within the width of the main blade D11, and both side portions of the widened portion D32 of the window D3 are formed over the sub blade D12.

  The bottom edge D34 of the window D3, that is, the lower edge of the upper blade portion D5 that faces the window D3 of the first blade D1, is shown in FIG. 7, FIG. 8, FIG. 11, FIG. As shown in FIG. 4, the contact part D35 for partially pressing at least both sides of the cut and raised piece P5 to be inserted into the cut hole P2 and the non-contact parts D36 and D37 that do not contact the cut and raised piece P5 are provided. Yes. Specifically, the edge D34 on the front end side of the window D3 in the present embodiment is continuous with the central non-contact portion D36 in which the central portion of the edge D34 is recessed toward the front end and both ends of the central non-contact portion D36. The contact part D34 which makes the left-right pair provided, and the both-ends non-contact part D37 which makes the left-right pair provided continuously at the both ends of this contact part D34 are provided. That is, the cutting blade 33 has a cutting edge 391 that protrudes most in the center in the width direction at the tip, and the central non-contact portion D36 having a semicircular shape is formed in the center in the width direction corresponding to the cutting edge 391. ing.

  The dimension of the window D3 has the following relationship with the dimension of the cut and raised piece P5. That is, the width dimension W11 of the reduced width portion D31 of the window D3 in the present embodiment substantially corresponds to the separation distance W2 of the paired second slit L2, and the width dimension of the wide width portion P56 of the cut and raised piece P5. It is set smaller than W3. On the other hand, the width dimension W1 of the widened portion D32 of the window D3 is set larger than the width dimension W3 of the wide portion P56 of the cut and raised piece P5. In other words, the width dimension W3 of the wide portion P56, which is the maximum width dimension of the tip portion of the cut and raised piece P5, is set smaller than the width dimension W1 of the widened portion D32 of the window D3. In the present embodiment, the width dimension W3 of the wide portion P56 of the cut and raised piece P5 is set larger than the width dimension W7 of the recessed central non-contact portion D36. In other words, the width dimension W3 of the wide portion P56 of the cut and raised piece P5 is the distance between the contact portions D35 forming a pair for pressing the both side portions of the cut and raised piece P5 in a dotted manner to be inserted into the cut hole P2. It is set larger than W7.

  Further, as shown in FIG. 9, the second blade D2 is preliminarily cut and raised so as to form an angle G3 of less than 180 degrees with respect to the sub blade D12 before the cutting and raising process. Accordingly, the sub blade D12 is bent at an angle G4 slightly smaller than a right angle, and the cut and raised angle G2 of the second blade D2 with respect to the main blade D11 is finally set to be approximately 90 degrees. ing.

  In addition, the window of a cutting blade can consider various aspects, and is not restricted to what was mentioned above.

<Blade blade of blade unit>
4, 7, 8, 9, and 13 to 21, the punching blade 32 can form a cut and raised piece P <b> 5 having a wide portion P <b> 56 in the leading end region P <b> 55 with respect to the paper P. Is. The punching blade 32 is provided on the slide member 31, and more specifically, is supported by the slide member 31 of the blade unit 3 via a shaft 341 provided at an intermediate portion. The punching blade 32 is made by punching and bending a single sheet metal material. A blade body 37 for punching the punching hole P1 in the paper P, and a slit-shaped escape in the paper P. And an auxiliary blade 38 for forming the part P6. That is, the punching blade 32 is formed on the paper P by a blade main body 37 having a shape corresponding to the punching hole P1 formed on the paper P, and continuously extending outward from the blade main body 37. And a blade-shaped auxiliary blade portion 38 having a shape corresponding to the straight slit-shaped relief portion P6. More specifically, the blade-shaped auxiliary blade portion 38 extends laterally from the base end of the blade body 37 in plan view. Further, when penetrating the paper P, the blade edge 381 of the auxiliary blade portion 38 is set to hit the paper P later than the blade edge 375 of the blade body 37. In the example shown in FIG. 7, the blade edge 381 of the auxiliary blade portion 38 is located below the blade edge 375 of the blade body 37. And the blade edge 381 of the blade auxiliary | assistant part 38 is formed so that it may be located below gradually as it goes outside.

  The blade body 37 and the auxiliary blade portion 38 of the punching blade 32 are integrally formed using a common sheet metal material.

  In addition, various aspects can be considered as a punching blade, and it is not restricted to what was mentioned above.

<Blade blade body>
As shown in FIGS. 7 to 9 and FIGS. 13 to 21, the blade body 37 includes a tip region forming portion 371 for forming a tip region P55 of a cut and raised piece P5 provided on the paper P, and the tip region. A base end region forming portion 374 for forming a base end region P54 of the cut and raised piece P5 formed continuously with the forming portion 371 is provided. The distal end region forming portion 371 forms the distal end region slit P11 of the punching hole P1, and the proximal end region forming portion 374 forms the proximal end region slit P12 of the punching hole P1. In other words, the tip region forming portion 371 includes a bent portion 372 at a position corresponding to the tip corner portion P58 of the cut and raised piece P5, and corresponds to the side edge corner portion P59 of the wide portion P56 of the cut and raised piece P5. It is provided with a bent portion 373 that makes a pair at a location. The respective base end region forming portions 374 are linear, and the separation distance W8 between the pair of base end region forming portions 374 is kept constant. That is, the base end region forming portions 374 are parallel to each other. A blade tip 375 having an arrow shape in plan view for punching and forming the shape of the punching hole P1 is provided at the tip of the blade body 37 in the protruding and retracting direction. More specifically, the blade body 37 has a blade edge 375 that is continuous with the base end region forming portion 374 and the tip region forming portion 371 along the penetration direction into the paper P.

  In addition, various aspects can be considered for a blade main body, and it is not restricted to what was mentioned above.

<Auxiliary blade part of punching blade>
As shown in FIG. 4 and FIGS. 7 to 9, the auxiliary blade portion 38 is located outward from the base end P13 of the punching hole P1, in this embodiment, from the base end of the base end region slit P12 to the left and right sides. This is for forming an extending slit-shaped relief portion P6 on the paper P. In other words, the auxiliary blade portion 38 is provided continuously to the proximal end region forming portion 374 of the blade body 37 and extends linearly in a direction perpendicular to the longitudinal direction of the cut and raised piece P5. In the present embodiment, the auxiliary blade portion 38 having a blade shape is formed so as to have a constant angle γ, specifically about 90 degrees, with respect to the proximal end region forming portion 374 of the blade body 37. Yes. The distance W9 between the two side edges in the plan view of the auxiliary blade portion 38 is larger than the distance W8 between the tip region forming portions 371 forming a pair of the blade body 37, and in this embodiment, the cut and raised piece P5. Is set larger than the maximum separation distance W10 corresponding to the wide portion P56. A blade edge 381 that is continuous with the blade edge 375 of the blade body 37 is formed at the tip of the auxiliary blade portion 38 in the protruding and retracting direction.

  An inner cam 34 for inserting the cut and raised piece P5 into a window D3 provided in the cutting blade 33 is provided in a space 376 surrounded by the cutting blade 32.

  In addition, various aspects can be considered for an auxiliary blade part, and it is not restricted to what was mentioned above.

<Inner cam of blade unit>
As shown in FIGS. 4, 7, 9, and 13 to 21, the inner cam 34 has a shaft 341 at the base end and a window provided with the cut and raised piece P5 at the tip end of the cutting blade 33. A push-out portion 343 for insertion into D3 is provided, and the shaft 341 is supported by the punching blade 32 and the slide member 31. An arm 344 for rotating the inner cam 34 protrudes from the base end of the inner cam 34. The inner cam 34 is set so that the upper surface of the arm 344 contacts the lower edge of the locking wall F13 provided on the base frame 21 when the slide member 31 moves upward. After the contact, the slide member 31 further moves upward, so that the inner cam 34 rotates to the rotation posture (K) around the base shaft 341. That is, after the punching hole P1 is formed in the paper P, the inner cam 34 is configured to rotate in the direction of the cutting blade 33 while pressing the cut and raised piece P5.

  The inner cam 34 is accommodated in a space 376 surrounded by the punching blade 32, more specifically, between the proximal region forming portions 374 forming a pair of the blade body 37 in the punching blade 32, The inner cam 34 is prevented from wobbling in the longitudinal direction of the shaft 341.

  In addition, various aspects can be considered for an inner cam, and it is not restricted to what was mentioned above.

  The blade unit 3 configured as described above is moved upward via the link mechanism 6 accommodated in the base frame 21 by operating the operation lever 5.

<Control lever>
As shown in FIGS. 1, 2, 8, 13, and 14, the operation lever 5 includes a metal lever plate 51 and a resin lever cover 52 that is mounted outside the lever plate 51. Consists of. The lever plate 51 is formed by bending a sheet metal material, and has a bottom wall 511 and side walls 512 rising from both side edges of the bottom wall 511.

  Various types of operation levers are conceivable and are not limited to those described above.

<Link mechanism>
As shown in FIGS. 8, 13, and 14, the link mechanism 6 has a front end 61a connected to the slide member 31 through the drive shaft 36 and a rear end 61b on the base frame 21. 27, the first link member 61 connected via the first link member 61, and the lower support shaft 53 positioned below the first link member 61 and held by the base frame 21 as an axis. Second and third link members 62 and 63 for pushing the link member 61 upward are provided.

  Here, the 2nd and 3rd link members 62 and 63 are arrange | positioned so that a toggle boosting effect may be made. That is, the second link member 62 has a base end 62a connected to the base frame 21 via the lower support shaft 53, and when the operation lever 5 is rotated upward. It rotates around the base end 62a. The second link member 62 is provided integrally with the operation lever 5, and the lower support shaft 53 is shared with the support shaft of the operation lever 5. The third link member 63 connects the rotation end 62 b of the second link member 62 and the intermediate 61 c of the first link member 61. Specifically, the third link member 63 has one end 63 a pivotally connected to the first link member 61 via the first coupling shaft 66 and the other end 63 b via the second coupling shaft 67. The second link member 62 is pivotally attached to the rotation end 62b. Therefore, the second coupling shaft 67 is not provided directly on the core of the operation lever 5 substantially along the bottom wall 511 of the lever plate 51, and the second link member 62 is moved from the core of the operation lever 5. It is provided in the position away via. That is, the positional relationship between the operation lever 5 and the third link member 63 is set so that the second coupling shaft 67 is positioned closer to the first link member 61 than the core of the operation lever 5. . In other words, the second coupling shaft 67 has an axis line connecting the lower support shaft 53 of the operation lever 5 and a rotating end 51a that rotates about the support shaft 53, and the first link member. It is set so as to be arranged between a support shaft 27 on the upper side of 61 and an axis line connecting a tip 61a which is a rotation end rotating about the support shaft 27.

  As shown in FIGS. 8, 13, and 14, the first link member 61 is a metal member that includes a top wall 611 and left and right side walls 612 that hang from the left and right side edges of the top wall 611. is there. The ceiling wall 611 is provided with a spring holding portion 613 for arranging a coil spring S3 disposed between the ceiling wall 611 and the ceiling wall R2 of the rear housing R of the base frame 21. The first link member 61 is biased downward by the spring S3. A long hole 614 for guiding the drive shaft 36 is provided at the front end of the left and right side walls 612.

  As shown in FIGS. 8, 13, and 14, the second link member 62 is integrally provided on the side wall 512 of the lever plate 51. That is, in this embodiment, the second link member 62 and the lever plate 51 of the operation lever 5 are an integral structure made of a common sheet metal material, and pass through the lower support shaft 53. The common through hole 621 is provided.

  As shown in FIGS. 8, 13, and 14, the third link member 63 is made of a metal having a channel shape including a bottom wall 631 and left and right side walls 632 that rise from left and right side edges of the bottom wall 631. belongs to.

  Note that various modes of the link mechanism are conceivable and are not limited to those described above. Moreover, you may connect a base part and a blade unit by methods other than a link.

<Punch stand>
As shown in FIGS. 1 to 3, 7, and 13 to 21, the punch base 4 includes blade through holes 411 and 422 into which the punching blade 32 and the cutting blade 33 can be inserted, and the blade through holes. And a window 421 through which the paper P can be viewed through 411 and 422. Specifically, the punch base 4 includes a top case 42 having a flat box shape, and an anvil 41 for punching a punching hole P1 in the paper P in cooperation with the punching blade 32 below the top case 42. And. The top case 42 has a window 421 opened upward and forward. The top case 42 is made of resin and includes a perforated portion 423 through which the punching blade 32 passes and a through hole 424 through which the cutting blade 33 passes. The top case 42 cuts the paper P from the blade through hole 422. Walls 425 and 426 that prevent powder from falling are formed by rising from the edges of the perforated portion 423 and the passage hole 424.

  The walls 425 and 426 are continuously formed so as to form a bank shape along the edges of the perforated part 423 and the passage hole 424. More specifically, the walls 425 and 426 are provided with a low wall 426 at the front portion and a high wall 425 at the rear portion so that there is a difference in height. The high wall 425 causes the user's finger to enter above the blade through hole 422 when the window cover 43 described later is opened to a certain position, and the punching blade 32 and the cutting blade 33 are unexpectedly moved. It also plays a role in preventing or suppressing touching. Further, the rear sides of the walls 425 and 426 of the top case 42 are fitted together so as to cover the outside of the rear housing R of the base frame 21.

  As shown in FIGS. 7 and 13 to 21, the anvil 41 includes a punching portion 412 for punching a punching hole P1 and a relief portion P6 in the paper P in cooperation with the punching blade 32, and the cutting portion. It is made of metal having a passage hole 413 through which the insertion blade 33 passes, and is attached to the base frame 21 using screws and positioning pins (not shown) in a state of being superimposed on the lower surface of the top case 42. . In this embodiment, a raised portion 415 for clamping the joining portion P13 from above is provided at a portion of the downward surface 414 of the anvil 41 located on the paper insertion side with respect to the blade through hole 411.

  As shown in FIGS. 3, 13, and 14, the window 421 is covered with a transparent window cover 43. The window cover 43 is attached to be openable and closable so as to remove the paper dust accumulated in the top case 42 to the outside. The window cover 43 is set to stop at a fixed position so that the user's hand does not reach the punching blade 32 and the cutting blade 33 when opened. Specifically, as shown by a two-dot chain line in FIGS. 2 and 3, a position that covers the upper portions of the perforated portions 412 and 423 of the anvil 41 and the top case 42 and exposes the upper portions of the passage holes 413 and 424. Can be opened up to. That is, the window cover 43 is provided above the walls 425 and 426 of the top case 42, and can be opened to a position that covers the lower wall 426 and exposes the upper wall 425. .

  Various forms of the punch table are conceivable and are not limited to those described above.

  In such a binding machine 1, as shown in FIGS. 4, 13, and 14, a portion where the paper P inserted into the paper insertion gap 35 abuts, that is, a latch disposed behind the gap 35. A positioning portion I1 for positioning the paper P is formed by bringing the corner portion P4 of the paper P into contact with the wall I3. The locking wall I3 defines the amount of insertion when one side of the paper P is inserted. The locking wall I3 has a function as an anvil mounting seat provided at the front end of the rear housing R of the base portion 2, and the anvil 41 of the punch base 4 is mounted on the upper surface of the locking wall I3. . At the center portion of the locking wall I3, there is a positioning portion I1 formed by cutting out the locking wall I3 into a substantially isosceles right triangle shape in plan view.

  Further, as shown in FIGS. 1 to 3, marks I2 for confirming the positioning state of the paper P positioned by the positioning portion I1 are provided on both side surfaces of the binding machine 1. Specifically, a mark I2 is provided on the outer surface of the top case 42 of the punch table 4 to suggest the posture of the paper P when it is accurately positioned by the positioning portion I1. The mark I2 is a vertical streak provided at a portion corresponding to the intersection of the side of the paper P and the outer surface of the top case 42 in plan view.

  In addition, various aspects can be considered for a positioning part and a mark, and it is not restricted to what was mentioned above.

  The blade driving mechanism 7 in the present embodiment is, as shown in FIGS. 8 and 13 to 21, provided with the base portion 2 and using the operating force applied to the operating lever 5. 32 and the cutting blade 33 are operated in the vertical direction. More specifically, a slide member 31 that holds the punching blade 32 and the cutting blade 33 and can be moved up and down with respect to the base portion 2. The blade driving mechanism 8 that moves the slide member 31 upward to the punching position (C) where the punching blade 32 and the cutting blade 33 penetrate the paper P by the operating force applied to the operation lever 5, and the slide member The blade extraction mechanism 9 is configured mainly to return 31 to the standby position (N) where the extraction blade 32 and the cutting blade 33 are extracted from the paper P. Note that the blade driving mechanism is not limited to the one described in detail below, and various modes can be considered.

  More specifically, the blade driving mechanism 8 holds the punching blade 32 and the cutting blade 33 by using an operating force applied to the operation lever 5 as shown in FIGS. The sliding member 31 is moved upward, and the punching blade 32 and the cutting blade 33 are inserted into the paper P set in the gap 35 on the upward surface F14 side of the base frame 21, and the operation lever 5 The link mechanism 6 disposed between the slide member 31 and the slide member 31 is mainly configured.

  Further, as shown in FIGS. 8, 13, 14, and 18 to 21, the blade extraction mechanism 9 in the present embodiment is configured so that the slide member 31 holding the extraction blade 32 and the cutting blade 33 is the above-described slide member 31. The coil spring S1 that is an elastic body that biases downward using the base frame 21 as a scaffold, and the coil spring S3 that is an elastic body that biases the first link member 61 downward using the base frame 21 as a scaffold. It is mainly composed.

  If the slide member 31 and the operation lever 5 are connected by the link mechanism 6 as in this embodiment, the performance of the blade extraction mechanism 9 can be further improved. That is, even when the number of sheets P increases and the cut and raised piece P5 cannot be pulled out to the one side Pa side of the sheet P only by the force of the coil spring S1 and the coil spring S3, the operation lever 5 is moved downward. By applying an operating force, it becomes possible to complete the extraction.

<Operation description>
Next, the operation of the binding machine 1 will be described.

  In a state where the operation lever 5 is not operated, as shown in FIGS. 13 and 15, the slide member 31 is held at the lower limit position, and the initial posture (S) in which the inner cam 34 is accommodated in the extraction blade 32 is maintained. I keep it. In this state, the plurality of overlapped sheets P are inserted to the back of the gap 35 formed between the upward surface F14 of the base frame 21 and the downward surface 414 of the anvil 41. Then, from the upper side of the window cover 43, the positions of the punching hole P1, the escape portion P6, and the cut hole P2 that are punched in the paper P through the blade through holes 411 and 422 are confirmed. Further, the positioning state of the paper P positioned by the positioning unit I1 is confirmed using the mark I2 provided on the side surface side of the binding machine 1. After that, when the operation lever 5 is operated upward, the force applied to the operation lever 5 is transmitted to the upward movement of the slide member 31 through the link mechanism 6 and transmitted.

  More specifically, when the operating lever 5 is operated upward, the lever plate 51 of the operating lever 5 rotates about the lower support shaft 53 and the second is provided integrally with the lever plate 51. The link member 62 rotates upward about the lower support shaft 53. As a result, the second coupling shaft 67 provided on the rotating end side of the second link member 62 moves in the direction of the first link member 61, that is, forward and upward. The third link member 63 connected via the second coupling shaft 67 pushes the first link member 61 upward while standing up with the rotation of the second link member 62. That is, the first coupling shaft 66 provided on the rotating end side of the third link member 63 pushes the center 61c of the first link member 61 upward against the urging force of the coil spring S3. Move to. Accordingly, the first link member 61 rotates about the upper support shaft 27, and thus the front end portion 61a thereof moves upward.

  In this way, the force of operating the operation lever 5 upward is transmitted to the drive shaft 36 via the second link member 62, the third link member 63, and the first link member 61. As a result, the slide member 31 is moved upward.

  When the slide member 31 starts to move upward, the coil spring S1 disposed between the bottom wall of the slide member 31 and the top wall F1 of the front housing F of the base frame 21 is first compressed. The slide member 31 rises against the urging force of the spring S1. Thereafter, the leading edges of the punching blade 32 and the cutting blade 33 attached to the slide member 31 come into contact with one surface Pa of the paper P, and the paper P is pushed up to a position where it is pressed against the anvil 41. When the operation lever 5 is further moved upward from this position, the state shown in FIG. 16 remains while the paper P is pressed against the anvil 41 by the cutting edges 375, 381, and 391 of the punching blade 32 and the cutting blade 33. Then, the punching blade 32 and the cutting blade 33 penetrate the paper P, and a punching hole P1, a relief portion P6, and a cut hole P2 are punched in the paper P. In the present embodiment, the escape portion P6 is punched by the auxiliary blade portion 38 of the punching blade 32 substantially simultaneously with or after the punching of the punching hole P1 by the blade body 375 of the punching blade 32. When the punching blade 32 and the cutting blade 33 are further raised after drilling, the arm 344 of the inner cam 34 disposed inside the punching blade 32 comes into contact with the locking wall F13 as shown in FIG. The inner cam 34 rotates to the rotation posture (K) as shown in FIG. 18 against the urging force of the coil spring S2 disposed between the inner cam 34 and the slide member 31. As a result, the front end P51 side of the cut and raised piece P5 cut and raised from the punching hole P1 to the other surface Pb side of the paper P is inserted into the window D3 of the cutting blade 33.

  Next, when the operation of the operation lever 5 is released, as shown in FIG. 19, the inner cam 34 is returned from the turning posture (K) to the initial posture (S) by the urging of the coil spring S2. The punching blade 32 and the cutting blade 33 are moved downward on the immersive side by the urging of the coil spring S1 and the coil spring S3, and the punching blade 32 and the cutting blade 33 are moved to the paper while the paper P is pulled away from the anvil 41. Extracted from P. At that time, as shown in FIG. 20, the cut and raised piece P5 inserted into the window D3 of the cutting blade 33 passes through the cut hole P2 and is extracted to the one surface Pa side of the paper P, as shown in FIG. As described above, the plurality of sheets P are combined by the cutting blade 33.

  If the paper P is extracted from the binding machine 1 in this state, the inclined surface is formed in the narrow gap formed between the raised portion F15 of the base frame 21 and the raised portion 415 of the anvil 41 in the middle. It is forcibly guided by the guide action of F16, and the joining portion P3 of the paper P is compressed and deformed in the thickness direction, and the booklet B described above is completed as shown by a two-dot chain line in FIG. In the case where the punching blade 32 and the cutting blade 33 cannot be pulled out to the one surface Pa side of the paper P only by the elastic force of the coil spring S1 and the coil spring S3, the operation lever 5 is operated downward. What is necessary is to assist the withdrawal.

  Next, the relationship between the cut and raised piece P5 and the cut hole P2 will be described in detail. 22 and 23 schematically show only the paper P and the cutting blade 33 among the elements constituting the blade driving mechanism 7 in order to explain the engagement.

  First, in the process in which the cutting blade 33 reaches the punching position (C), the tip P51 side of the cut and raised piece P5 cut and raised from the punching hole P1 to the other surface Pb side of the paper P is the window of the cutting blade 33. Inserted into D3. That is, as shown in FIG. 17, the tip P51 side of the cut and raised piece P5 first passes through the central non-contact portion D36 formed at the edge D34 on the tip side of the window D3, and the window D3 of the cutting blade 33 is formed. Inserted into. More specifically, as shown in FIGS. 17 and 18, in the process of reaching the uppermost end at which the cutting blade 33 can move, the inner cam 34 is in the rotational posture (K), and the window D3 of the cutting blade 33 is formed. While inserting the cut and raised piece P5, the inner cam 34 itself is also inserted into the window D3. At that time, the leading end region P55 of the cut and raised piece P5 passes through the central non-contact portion D36 of the window D3 and the widened portion D32 of the window D3, and then the reduced width portion D31 provided adjacent to the widened portion D32. To reach. The cut and raised piece P5 pushed into the reduced width portion D31 is provided at the side edge of the reduced width portion D31 because the left and right ends of the tip region P55 have a width dimension W3 larger than the reduced width portion D31. It will be in the state curved along the 2nd braid | blade D2 formed.

  Next, when the operation of the operation lever 5 is released and the cutting blade 33 starts to move in the extraction direction from the paper P, the cutting blade 33 descends, and the tip region P55 of the cut and raised piece P5 has a reduced width portion. It is released from the restraint by D31 and moves into the widened portion D32. That is, as the second blade D2 of the cutting blade 33 sinks to the paper P2 side, the left and right ends of the leading end region P55 are released from the second blade D2 and move to the widened portion D32 side. It is. The wide portion P56 of the cut and raised piece P5 moved to the widened portion D32 side is located on the side farther from the punching hole P1 than the tip L21 of the second slit L2. Further, the shape and size of the punching blade 32, the shape and size of the cutting blade 33, so that the width dimension W3 of the wide portion P56 of the cut and raised piece P5 is larger than the width dimension W11 of the reduced width portion D31 of the window D3. And since the relative position of the said cutting blade 32 and the cutting blade 33 is set, the outer end P57 of the said wide part P56 is located outside the said 2nd slit L2.

  Further, as shown in FIGS. 19 and 22, as the cutting blade 33 descends and the widened portion D32 of the window D3 sinks to the paper P side, the edge D34 on the leading end side of the window D3 becomes a cut and raised piece. It begins to partially contact the tip region P55 of P5.

  20 and FIG. 23, the leading end region P55 of the cut and raised piece P5 is pulled out from the other surface Pb side of the paper P to the one surface Pa side with the extraction operation of the cutting blade 33. That is, when the cutting blade 33 is extracted from the paper P, the edge D34 on the front end side of the window D3 is in pressure contact with the front end region P55 of the cut and raised piece P5, and the front end region P55 of the cut and raised piece P5 is the cut hole. It passes through P2 and is guided from the other side Pb side of the paper P to the first side Pa side. In other words, the cut and raised piece P5 is pulled to the one surface side of the paper P by the edge D34 on the front end side of the window D3 of the cutting blade 33. At that time, since the edge D34 on the distal end side includes the contact portion D35 and the non-contact portions D36 and D37, the cut-and-raised piece P5 bends when being pressed against the distal-end region P55 of the cut-and-raised piece P5. As a result, the tip region P55 and the edge D34 on the tip side of the window are brought into a point contact state or a state close thereto at the contact portion D35. In other words, in the present embodiment, when the cutting blade 33 is extracted from the paper P, both sides of the cut and raised piece P5 are partially pressed by the contact portion D35 with which the cut and raised piece P5 makes a pair. . On the other hand, the cut-and-raised piece P5 does not contact the central non-contact part D36 existing between the contact parts D35 and the both-ends non-contact part D37 existing outside the contact part D35. That is, the contact portion D35 presses both side portions of the cut and raised piece P5 in a dot shape so that the cut and raised piece P5 passes through the cut hole P2. Therefore, when pulling out the cutting blade 33, in other words, when the cutting and raising piece P5 enters the window D3 of the cutting blade 33 and passes through the cut hole P2, the gap between the cutting blade 33 and the cutting and raising piece P5 is obtained. It is possible to reduce the frictional force generated in. More specifically, when the cut and raised piece P5 is guided into the cut hole P2 by the displacement of the cutting blade 33, the contact position between the contact portion D35 and the cut and raised piece P5 is the position of the cut and raised piece P5. It will change so that it may slide smoothly along a longitudinal direction. Therefore, when the paper P is bound by the binding machine 1, it is possible to reduce an operation burden due to friction between the cutting blade 33 and the cut and raised piece P5.

  Further, when the leading end portion of the cut and raised piece P5 is pushed out to the one side Pa side of the paper P in this way, as shown in FIGS. 20 and 23, the base end P52 of the cut and raised piece P5 is pushed by the cut and raised piece P5. Is temporarily energized along the longitudinal direction of the cut and raised piece P5. At that time, since the slit-shaped relief portion P6 is formed in the vicinity of the base end P52 of the cut and raised piece P5, the stress is dispersed without being concentrated around the base end P13 of the punching hole P1 in the paper P. Then, by energizing the cut and raised piece P5, the base end P52 of the cut and raised piece P5 where stress tends to concentrate and the paper P in the vicinity thereof are finely changed.

  Specifically, as shown in FIGS. 22 and 23, a portion P10 located on the cut hole P2 side with respect to the escape portion P6 on the paper P is a piece located on the cut hole P2 side with respect to the escape portion P on the paper P. It is displaced relative to the holding piece P9 in the thickness direction. In other words, when the cut-and-raised piece P5 is urged, the paper P in the vicinity of the base end P52 of the cut-and-raised piece P5 is not torn at the portion P10 located on the cut hole P2 side of the escape portion P6 in the paper P. Thus, it will be elastically deformed temporarily.

  Therefore, in the present embodiment, even when the number of sheets P is relatively large, by providing the escape portion P6 at a required portion of the sheet P, more specifically, the base end P51 of the cut and raised piece P5, It is possible to prevent or suppress the problem that the periphery of the base end P13 of the punching hole P1 in the paper P is broken.

  Furthermore, the cantilever pieces P7 and P8 of the paper P which are in a cantilever state by the first slit L1 cut out by the first blade D1 and the second slit L2 cut out by the second blade D2, Warps like a one-sided spread. And when the free end side of these cantilever pieces P7 and P8 is displaced in the vertical direction, the cut and raised piece P5 is passed through the cut hole P2. More specifically, as shown in FIG. 5, in the tip region P55 of the cut and raised piece P5, the portion on the opposite side of the punching hole P1 across the first slit L1 is engaged with the first slit L1. In the tip region P55 of the cut and raised piece P5, the portion outside the second slit L2 is engaged with the second slit L2. In other words, the edge from the wide part P56 to the tip P51 of the cut and raised piece P5 is associated with the first slit L1, and the edge from the wide part P56 to the boundary part P53 is associated with the second slit L2. .

  When the cutting blade 33 further moves in the immersion direction, that is, downward from the state shown in FIG. 20, the tip region P55 of the cut and raised piece P5 that has been pulled downward by the first blade D1 of the cutting blade 33 is removed. Try to return to the original position. Accordingly, when the cutting blade 33 is completely separated from the paper P, the leading end P51 side of the cut and raised piece P5 follows the one surface Pa side of the paper P as shown in FIG.

<Effects of First Embodiment>
As described above, in the binding machine 1 according to the present embodiment, the punching blade 32 moves the cut and raised piece P5 to the base end P52 when the cut and raised piece P5 is inserted into the cut hole P2. In the process of binding a plurality of sheets P, the base end of the cut-and-raised piece P5 is provided with the auxiliary blade part P6 for forming the relief part P6 for suppressing the tearing to alleviate the stress concentration on the sheet P. The problem that the periphery of P52 breaks, more specifically, the sheet P is torn from the base end P13 of the punching hole P1 corresponding to both sides of the base end P52 of the cut and raised piece P5 in the paper P. Therefore, it is possible to preferably eliminate or suppress the problem that the binding occurs, and to stabilize the binding force. In addition, since a portion where the paper P is broken is less likely to appear in a portion that is bound in a plurality of papers P, even if the paper P is bound, it is possible to suppress unsightly viewing from the user or the like. . In other words, it is possible to improve the appearance of the binding portion in a state where a plurality of sheets P are bound.

  In particular, when a large number of sheets P, for example, 5 to 6 or more general paper sheets P are bound, a large stress is generated at the base end of the cut and raised piece P5, and the breakage tends to occur. If the blade 32 includes an auxiliary blade portion P6 for forming the escape portion P6 at a predetermined position of the paper P, the intended purpose can be achieved even when a large number of sheets P are bound. can do.

  The escape portion P6 has a slit shape extending laterally from the base end P13 of the punching hole P1, and the auxiliary blade portion 38 for forming the escape portion P6 is a base end of the blade body 37 of the punch blade 32. That is, since it is a blade-like one continuously extending from the base end to the side in a plan view, the escape portion P6 can be formed with ease for the paper P together with the punching hole P1.

  Since the blade body 37 and the auxiliary blade portion 38 of the punching blade 32 are integrally formed using a common sheet metal material, a blade edge for forming the punching hole P1 and the relief portion P6 with respect to the paper P. It is easy to form the punching blade 32 having 375 and 381 continuous.

  The cut and raised piece P5 has a distal end region P55 including the distal end portion, and a proximal end region P54 which is continuous with the distal end region P55 and is narrower than the widest wide portion P56 of the distal end region P55. The blade main body 37 is for forming a distal end region forming portion 371 for forming the distal end region P55 and the proximal end region P54 formed continuously with the distal end region forming portion 371. Since the base end region forming portion 374 is provided, the shape of the cut and raised piece P5 formed on the paper P can be made suitable for engaging with the cut hole P2.

  Since the auxiliary blade portion 38 extends in a direction orthogonal to the longitudinal direction of the cut and raised piece P5, the escape portion P6 can be suitably provided on the cut and raised piece P5. That is, in the present embodiment, the slit-like relief portion P6 extending in the direction orthogonal to the longitudinal direction of the cut and raised piece P5 extends from the base end P13 of the punching hole P1 in the above-described direction. When the cut-and-raised piece P5 is pulled by 33, the paper P is easily deformed.

  Further, the blade used in the binding machine 1 shown in the present embodiment, that is, the punching blade 32 is formed by continuously forming the blade edge 375 of the blade body 37 and the blade edge 381 of the auxiliary blade portion 38. Therefore, the stress concentration on the base end P52 of the cut and raised piece P5 when the cut and raised piece P5 is inserted into the cut hole P2 can be alleviated, and the intended purpose can be achieved.

  The edge D34 on the front end side of the window D3 partially presses at least both sides of the cut and raised piece P5 so as to pass through the cut hole P2, and the non-contact portion D36 that does not contact the cut and raised piece P5. , D37, so that even when the number of the cut and raised pieces P5 is relatively large, the cut and raised pieces P5 are prevented from being wound or caught on the edge D34 of the window D3, thereby increasing the frictional force. can do. That is, it is possible to suppress a problem that has occurred in the conventional case in which the cut and raised pieces are arranged along the edge on the front end side of the window.

  More specifically, in the conventional one, the edge on the front end side of the window and the cut and raised piece are brought into full contact with each other, and when the cutting blade is removed from the paper, the gap between the edge of the window and the cut and raised piece is used. The friction generated in this was increased. That is, conventionally, the edge on the front end side of the window is in linear contact with the cut and raised piece, and when the cut and raised piece is guided into the cut hole by the displacement of the cutting blade, the cut and raised piece and the window The engagement with the edge on the tip side was too strong, and the cut and raised piece was difficult to slide against the edge on the tip side. In such a case, it becomes difficult to pull out the cut and raised pieces to the one surface side of the sheet only by the force of the coil spring S1 and the coil spring S3. However, in the present embodiment, both sides of the cut-and-raised piece P5 are brought into contact with the edge D34 on the leading end side in the form of dots, so that when the cutting blade 33 is removed from the paper P, the window D3 The friction generated between the edge D34 and the cut and raised piece P5 can be reduced. Therefore, the cut and raised piece P5 can be inserted through the cut hole P2 without difficulty, and unnecessary cutting force can be suppressed from being applied to the cutting blade 33. Therefore, the return operation to the initial position of the operation lever 5 can be made smooth, and the uncomfortable feeling given to the user from the operation lever 5 can be reduced.

  Moreover, since it can relieve | moderate that the frictional force which arises between the cutting and raising piece P5 and the cutting blade 33 increases, it is not necessary to use a spring with a large elastic force as the coil spring S1 and the coil spring S3. Therefore, the binding machine 1 that can be operated with a light operating force can be provided.

  Since the window D3 of the present embodiment includes the contact portion D35 for pushing the cut and raised piece P5 into the cut hole P2 at the edge D34 on the front end side, the front end region P54 of the cut and raised piece P5 is positively cut. Can be plugged into P2. In particular, since the contact portion D35 is chamfered on the edge D34 on the distal end side of the window D3, the curved contact portion D35 presses in a dotted manner while sliding on the cut and raised piece P5. There is little possibility of damaging the cut and raised piece P5. Moreover, since the center non-contact part D36 is provided in the width direction center of the cutting blade 33, and the contact part D35 is provided in the left-right symmetric position of the both ends, the front-end | tip area | region P54 of the cutting and raising piece P5 is left-right. Can be pressed evenly.

  The contact portion D35 is located in the same plane as the main slit L11, and the thickness dimension thereof is the same as the thickness dimension of the main slit L1. Therefore, the front end P51 side of the cut and raised piece P5 can be reliably exposed to the one surface Pa side of the paper P by the contact portion D35. Furthermore, the leading edge P51 side of the cut and raised piece P5 is exposed to the one surface Pa side, and the cut and raised piece P5 located above the cantilever piece P8, that is, on the other side Pb side of the paper P before being engaged. The left and right end portions in the leading end region P55 can be positioned below the cantilever piece P8, that is, on the one surface Pa side of the paper P. That is, when the cantilever pieces P7 and P8 are warped in the thickness direction of the paper P, the cut-and-raised piece P5 is formed in the cut hole P2 at the second slit L2 portion where the cantilever piece P7 and the cantilever piece P8 are adjacent to each other. Can be involved.

  In particular, the central non-contact portion D36 shown in the present embodiment is formed by recessing the central portion of the edge D34 on the distal end side of the window D3 on the distal end side, so that the cut and raised piece P5 can be easily inserted into the window D3. . That is, since the tip P51 portion of the cut and raised piece P5 is inserted into the central non-contact portion D36 before being inserted into the window D3, the tip P51 of the cut and raised piece P5 is prevented from being caught by the main blade D11. be able to. In particular, this effect becomes remarkable when the tip region P55 has a tapered shape, such as the cut and raised piece P5 having an arrow shape as shown in the above embodiment. In addition, since the central non-contact portion D36 has a semicircular shape having a curved portion, a structure in which a cut and raised piece P5 that is pressed in both sides by the pair of contact portions D35 and curved in the thickness direction can be easily inserted. It has become.

  Since the central non-contact portion D36 is a concave portion of the central portion of the edge D34 on the front end side of the window D3, it can be easily formed by punching a sheet metal material. Further, since it is not necessary to provide a hole for inserting the bent surplus material on the front end side of the main blade as in the case where the smooth guide portion is formed by bending the sheet metal material as in the prior art, the cutting blade 33 The distance between the blade edge 391 and the edge D34 on the tip side of the window D3 can be set small. In particular, the cutting blade 33 has a cutting edge 391 whose tip in the width direction protrudes most at the tip, and the non-contact portion D36 is formed at the center in the width direction so as to correspond to the cutting edge 391. And the distance between the window D3 can be reduced. Therefore, the distance from the base end of the cutting blade 33 to the tip can be shortened compared to the conventional one, and the stroke of the cutting blade 33 in the advancing / retreating direction can be set smaller than the conventional one. Accordingly, it is possible to make the binding machine 1 as a whole compact in the advancing / retreating direction.

  Further, the width dimension W3 of the wide portion P56 which is the maximum width dimension in the distal end region P55 of the cut and raised piece P5 is smaller than the width dimension W1 of the widened portion D32 of the window D3, and the recessed central non-contact. Since it is set to be larger than the width dimension W7 of the part D36, the cut and raised piece P5 can be easily inserted into the widened part D32 of the window D3, and the cut and raised piece P5 once inserted into the window D3 is The pair of contact portions D35 can be inserted into the cut hole P2 while pressing both sides of the cut and raised piece P5.

  Since the cutting blade 33 includes the first blade D1 having the window D3 and the second blade D2 formed on both side edges of the window D3, the cutting and raising piece P5 is appropriately used. It is possible to form a cut hole P2 that can be engaged with the cut hole P2.

  Particularly, in the present embodiment, the second slit L2 formed by the second blade D2 extends in the direction of the punching hole P1 from the middle of the first slit D1 formed by the first blade D1. The cut and raised piece P5 includes a wide portion P56 on the distal end P51 side, and the edge from the wide portion P56 to the base end P52 of the cut and raised piece P5 is engaged with the second slit L2. Therefore, the locked state of the cut and raised piece P5 can be maintained regardless of the material of the paper P.

  More specifically, the cutting blade 33 has a window D3 for engaging the cut and raised piece P5, a first blade D1 for forming the first slit L1, and the first slit L1. And a second blade D2 for forming a second slit L2 extending in the direction of the punching hole P1 from the middle, and an edge extending from the wide portion P56 to the base end P52 of the cut and raised piece P5. Since the cut and raised piece P5 is not only engaged with the first slit L1, but also with the second slit L2, the cut and raised piece P5 and the cut hole P2 are engaged with each other. The bonding state can be made more reliable.

  That is, in the case where the cut and raised piece is engaged only with the first slit, if some force is applied to the booklet and the first slit is greatly opened in the vertical direction, the cut and raised piece and the cut hole are There is a risk that the relationship will be released. However, in the case of the present embodiment, since the cut and raised piece P5 is also related to the second slit L2, the first slit L1 is greatly opened in the vertical direction. However, the engagement between the cut and raised piece P5 and the second slit L2 is not released, and the engaged state is maintained. Therefore, the joining state of the cut and raised piece P5 and the cut hole P2 can be made better than the conventional one.

  In particular, even when a large number of sheets made of a material having a relatively low surface frictional resistance, such as a plastic sheet, are bound, the edge extending from the wide portion P56 to the boundary portion P53 of the cut-and-raised piece P5 Since it is engaged with the second slit L2, a part of the tip region P55 of the cut and raised piece P5 can be brought into the lower surface side of the cantilever piece P8. Therefore, the engagement state is maintained without releasing the engagement between the cut and raised piece P5 and the second slit L2, and the joined state of the cut and raised piece P5 and the cut hole P2 can be maintained.

  The shape and size of the cutting blade 32, the shape and size of the cutting blade 33, and the above-mentioned so that the wide portion P56 is located on the side farther from the punching hole P1 than the tip L21 of the second slit L2. Since the relative positions of the punching blade 32 and the cutting blade 33 are set, the edge from the wide portion P56 to the base end P52 of the cut and raised piece P5 can be engaged with the second slit L2. . That is, when the wide portion P56 is located closer to the punching hole P1 than the distal end L21 of the second slit L2, the edge from the wide portion P56 to the base end P52 of the cut and raised piece P5 is related to the second slit L2. The joining state of the cut and raised piece P5 and the cut hole P2 is released relatively easily without matching, but the width dimension W3 of the wide portion P56 is set larger than the width dimension W11 of the reduced width portion D31 of the window D3. In combination with this, the engaged state between the cut and raised piece P5 and the second slit L2 can be maintained. That is, since the cut and raised piece P5 is engaged not only with the first slit L1, but also with the second slit L2 extending from the middle of the first slit L1, only the first slit L1 is involved. It is easier to engage than when engaging with a substantially straight cut hole.

  Further, in the present embodiment, the shape and size of the punching blade 32, the shape and size of the cutting blade 33, and the punching blade 32 so that the wide portion P56 substantially coincides with the first slit L1. Although the relative position of the cutting blade 33 was set, the shape and size of the punching blade 32 and the cutting so that the wide portion P56 is positioned on the punching hole P1 side with respect to the first slit L1. It is preferable to set the shape and size of the blade 33 and the relative position of the punching blade 32 and the cutting blade 33. If it does in this way, the reliability of the joining state of the cut-and-raised piece P5 and the cut hole P2 can be improved by increasing the part which the 2nd slit L2 and the cut-and-raised piece P5 relate. In other words, since the area of the cut and raised piece P5 located on the one surface side of the cantilever piece P8 is relatively large, the edge extending from the wide portion P56 to the base end P52 of the cut and raised piece P5 is more surely formed. It can be engaged with the slit L2.

  Further, in other words, the width dimension W3 of the wide portion P56 is such that the outer end P57 of the wide portion P56 is positioned outside the second slit L2, and the width dimension W3 of the wide portion P56 is the width of the reduced width portion D31 of the window D3. Since the shape and dimensions of the punching blade 32, the shape and dimensions of the cutting blade 33, and the relative position of the punching blade 32 and the cutting blade 33 are set so as to be larger than the width dimension W11. The edge from the wide part P56 to the base end P52 of the raised piece P5 can be engaged with the second slit L2. That is, by making sure that the outer end P57 of the wide portion P56 is exposed to the one surface Pa side, the cut and raised piece P5 can be in a state of being caught on the second slit L2 portion.

  Further, the shape and size of the punching blade 32, the shape and size of the cutting blade 33, and the width dimension W3 of the wide portion P56 are smaller than the width dimension W1 of the widened portion D32 of the window D3. Since the relative positions of the punching blade 32 and the cutting blade 33 are set, the possibility that the left and right ends of the wide portion P56 will be caught by the left and right side frames of the window D3 is suppressed, and the cut and raised piece P5 is securely inserted into the window D3. be able to. Therefore, the cut and raised piece P5 and the cut hole P2 can be smoothly engaged with each other.

  The binding machine 1 includes a punch base 4, and the punch base 4 has blade through holes 411 and 422 into which the punching blade 32 and the cutting blade 33 can be inserted, and paper P through the blade through holes 411 and 422. Since the paper P can be visually recognized from the window 421 through the blade through-holes 411 and 422, the portion of the paper P to be perforated is visually grasped. Can do. Therefore, the punching hole P1 can be punched at a desired position of the paper P only by adjusting the position of the paper P with respect to the blade through holes 411 and 422. According to the binding machine 1 described in the present embodiment, the position at which the punching hole P1 is formed can be grasped, and also visible above the cutting blade 33 through the window 421. The cutting blade 33 can also be formed at a desired position.

  Further, since the user of the binding machine 1 can visually see how the paper P is bound, a comfortable feeling of use can be given when the binding machine 1 is used.

  In particular, in this embodiment, the window 42 is covered by attaching a window cover 43 to the window 42. However, since the window cover 43 is transparent, the blade through holes 411 and 422 and the paper P can be visually recognized through the window cover 43.

  Since the joining portion P3 of the booklet B is compressed and deformed in the thickness direction, a plurality of sheets P are joined by the cut and raised pieces P5 cut and raised from the punching hole P1. That is, since the cut and raised pieces P5 and the paper P that serve as staples are made of the same quality paper, it is not necessary to remove the staples when discarding. Therefore, a fine work for removing the metal needles and the like from the paper P becomes unnecessary, and even when a lot of paper P is discarded, it can be discarded without much labor and time.

  Furthermore, since the joining portion P3 by the cut and raised piece P5 is compressed and the joining portion P3 is compressed and deformed to a state in which it does not return to the form immediately after joining by the elasticity of the paper P, the joining portion P3 is bulky. Can be suppressed.

  Further, when the user performs a series of operations such as gripping and releasing the operation lever 5 provided in the binding machine 1, a punching hole P1 for a plurality of sheets P is formed and the punching hole P1 is used to form the punching hole P1. The plurality of sheets P are joined to each other using the cut and raised pieces P5, and a booklet B in which the joined portion P3 is compressed and deformed can be produced.

  Further, since the anvil 41 is fixed to the base frame 21, the rigidity of the binding machine 1 as a whole can be increased, and a stable operation can be performed.

  Even when the paper P is relatively thick or the number of the paper P is large, a portion surrounded by the first slit L1 and the second slit L2, for example, cantilever pieces P7 and P8 is cut. Since the paper blade P is deformed in the thickness direction when the insertion blade 33 is pulled out, the operation lever 5 can be pulled up with a lighter operation force. That is, it is not necessary to make the coil spring that gives a repulsive force to the operation lever 5 so strong.

  Further, the sheet bundle which is the booklet B in the present embodiment is provided with a break-preventing escape portion P6 at the base end P52 of the cut and raised piece P5 in the sheet P. Therefore, in a state where a plurality of sheets P are bound. Also, the possibility of breakage of the cut and raised pieces P5 is suitably suppressed. That is, even when the user or the like holds a bundle of sheets in which a plurality of sheets P are bound or turns the sheets, punching holes P1 are formed in the vicinity of the base end P52 of the cut and raised pieces P5 in each sheet P. Since the slit-shaped breakage suppressing portion P6 that is continuous with the base end P13 is provided, the base end P52 of the cut and raised piece P5 can be suitably prevented from breaking.

  The present invention is not limited to the embodiment described above.

<Modification of binding machine>
The binding machine may be provided with a plurality of cutting blades or a plurality of cutting blades. For example, a single cutting blade for forming a plurality of cut and raised pieces and a plurality of cutting blades corresponding to the plurality of cut and raised pieces, or a plurality of pieces for forming a plurality of cut and raised pieces And a plurality of cutting blades for forming a plurality of cutting and raising pieces, and a plurality of cutting blades for forming a plurality of cutting and raising pieces. The number of cutting blades corresponding to the plurality of cutting and raising pieces may be provided.

  Further, as shown in the first embodiment, the protruding and retracting directions of the cutting blade and the cutting blade are not limited to those in which the protruding side of the cutting blade and the cutting blade is upward and the immersion side is downward. It is also possible to use the cutting blade and the cutting blade as the lower side and the immersive side as the upper side. Further, the moving direction of the punching blade and the cutting blade is such that the punching hole and the cut hole are formed by temporarily moving downward, or the punching hole and the cut hole are moved by moving in the left-right direction or the oblique direction. It may be formed. For example, the specification of the first embodiment upside down is also conceivable. The binding machine of this specification includes “upper”, “lower”, “up”, “down”, “upper surface”, “lower surface”, “upper side”, “lower side”, and “upper blade portion” in the above-described embodiment. , "Lower blade part" to "Lower", "Upper", "Descent", "Up", "Lower surface", "Upper surface", "Lower side", "Upper side", "Lower blade part", "Upper blade" Part ”.

<Second Embodiment (FIGS. 24 and 25)>
This embodiment is provided with a plurality of cutting blades and a plurality of punching blades, and has an upside down specification with respect to the first embodiment.

  24 and 25 show the binding machine according to the second embodiment. In the second embodiment, components corresponding to the first embodiment are denoted by the same reference numerals as those used in the first embodiment with “A” at the head. Detailed description is omitted.

  The binding machine A1 is for making a booklet B by joining a plurality of sheets P, and as shown in FIGS. 24 and 25, a punch table A4 placed on a table, and the punch table A4. The main body A2 fixed on the upper side, the blade unit A3 which is accommodated in the main body A2 so as to be movable up and down, and includes the cutting blade A32 and the cutting blade A33, and the blade unit A3 finishes the drilling operation. A paper base A10 for lifting the bound paper P when it is raised, and an operation lever A5 attached to the main body A2 so as to be pivotable in the vertical direction in order to operate the paper base A10 and the blade unit A3. I have. The binding machine A1 in the present embodiment is different from the one having a pair of cutting blades 33 and punching blades 32 for binding the paper P as shown in the first embodiment. A pair of cutting blade A33 and punching blade A32 is provided. In the second embodiment, the paired blade units A3 are arranged so that the main blades AD11 of the respective cutting blades A33 are parallel to each other. And it arrange | positions so that the front-end | tips of arm A344 of inner cam A34 may face each other. In addition, this invention may be provided with three or more sets of cutting blades and punching blades. Further, the paper base A10 is not an essential component of the binding machine A1.

  As shown in FIG. 24, the booklet B produced by such a binding machine A1 is formed by bundling a plurality of sheets P, and these sheets P are two joint portions P3 set on the binding source side. Are joined to each other. Each joint P3 includes a punching hole P1 formed in each paper P by a punching blade 92 inserted from one side Pa of the paper P, and a cut hole formed in each paper P adjacent to the punching hole P1. P2 and a cut and raised piece P5 cut and raised from the punching hole P1 to the other side Pb of the paper P. The leading edge P51 side of the cut and raised piece P5 is led through the cut hole P2 to the one surface Pa side of the paper P, whereby the binding source sides of the plurality of paper P are joined to each other. . The paired punching holes P1 are arranged so that the base ends P13 are opposed to each other, and the distance between the farthest distal ends is made to correspond to the binding stitch pitch of a file (not shown).

  If it is such, a plurality of cutting blades A33 and punching blades A32, that is, two sets of cutting blades A33 and punching blades A32, can be moved back and forth by one drilling operation. Further, it is possible to maintain a binding state that is more favorable than the case where binding is performed at only one place.

  Further, the stationary type binding machine according to the second embodiment has the main body A2 fixed to the punch table A4 arranged on the table as compared with the so-called handy type machine described in the first embodiment. The rigidity of the entire A1 can be increased, and a stable operation is possible.

  Of course, the binding machine is not limited to the one described here.

  The positions where the punched holes and the cut holes are provided in the paper are not limited to the corners, but may be positions along the side of the paper P as in the second embodiment. Further, the number of punched holes and cut holes is not limited to one for the booklet, and may include a plurality of punched holes and cut holes. In the second embodiment, since two joint portions P3 are formed on the paper P, the joint state between the cut and raised pieces P5 and the cut holes P2 is removed, and the cut and raised pieces P5 are cut into the cut holes P2. It is possible to suitably suppress the problem of slipping out of the sheet and the problem that the lateral displacement of the cut and raised piece P5 is likely to occur. When a plurality of punching holes P1 and cut holes P2 are used, as shown in the second embodiment, if the two punching holes P1 are formed corresponding to the pitch of the binding rod of a binding tool such as a file, the punching holes P1 can be used as a binding hole for binding the booklet B to a file having two binding folds. Further, the size and shape of the punched hole and the cut hole can be variously changed.

<Deformation example of punching blade, punching hole, cutting and raising piece>
The shape of the punching blade, the shape of the punched hole formed by this punching blade, and the shape of the cut and raised piece are not limited to those of the above-described embodiment. That is, various things can be considered in addition to the aspect of the punching hole P1 and the relief portion P6 of the first embodiment as schematically shown in FIG. As another embodiment, for example, the one shown in FIGS. 27 to 32 can be considered.

  Here, in FIG. 26 to FIG. 32, the shape of the punched hole is shown by a solid line. On the other hand, although not shown about a punching blade, it has the blade main body and auxiliary blade part of the shape corresponding to the shape of the punching hole shown in figure. Therefore, in the following other embodiments, the components corresponding to the first embodiment are prefixed with “B”, “C”, “D”, “E”, “F” or “G”. In the above description, the same reference numerals as those used in the first embodiment are given, and the detailed description is omitted.

  Needless to say, the punching blade, the punching hole, and the cutting and raising piece are not limited to those described here.

<Third Embodiment (FIG. 27)>
Unlike the punching hole P1 of the first embodiment described above, the punching hole BP1 formed by passing a punching blade (not shown) through the paper BP has a substantially U-shape with a semicircular tip side. . That is, in this embodiment, the cut and raised piece BP5 formed by the punching hole BP1 is a tongue piece. More specifically, the punching hole BP1 includes a slit corresponding to the shape of the cut and raised piece BP5, specifically, a U-shaped slit BP11 ′. The sheet BP is provided with slit-like relief portions BP6 so as to extend outward from the two base ends BP13 of the U-shaped slit BP11 ′. In this embodiment, the angle α at which the slit of the relief portion BP6 and the slit of the punching hole BP1 intersect is approximately 90 degrees. Here, the angle α may be set to 90 degrees or more or 90 degrees or less. In other words, the angle at which the slit of the relief portion BP6 and the slit of the punching hole BP1 intersect may be an acute angle or an obtuse angle. It does not matter whether the slit near the base end BP13 in the punching hole BP1 is perpendicular to the imaginary line connecting the two base ends BP13 of the punching hole BP1. That is, it may be an acute angle or an obtuse angle. For example, a slit in the vicinity of the base end BP13 in the punching hole BP1 has an acute angle with respect to an imaginary line connecting the two base ends BP13 of the punching hole BP1, and is formed by the punching hole BP1. An example in which the shape of the cut and raised piece BP5 is a mountain shape can be given.

  The cut-and-raised piece BP5 substantially coincides with an imaginary line that connects the two base ends BP13 of the punching hole BP1 when the tip portion is associated with a cut hole (not shown) (not shown). Or bent at the base end BP52 of the cut and raised piece BP5 from the virtual straight line connecting the two base ends BP13 of the punching hole BP1 to the tip of the cut and raised piece BP5. Yes.

<Fourth Embodiment (FIG. 28)>
The punching hole CP1 formed by passing a punching blade (not shown) through the paper CP has an arrowhead shape. More specifically, the punching hole CP1 is a tip region corresponding to the tip region of the cut and raised piece CP5. A slit CP11 and a proximal end region slit CP12 formed continuously from the distal end region slit CP11 and corresponding to the proximal end region of the cut and raised piece CP5 are provided. The base end region slit CP12 forming a pair has a gradually increased separation distance toward the cut hole direction. In other words, the base end region CP54 of the cut and raised piece CP5 formed by the punching hole CP1 has a trapezoidal shape in which the width dimension on the base end side is larger than the width dimension on the tip end side. Thus, in this embodiment, a slit-shaped relief portion CP6 extending from the base end CP13 of the punching hole CP1 is formed in the paper CP. The escape portion CP6 has a slit shape extending outward from the base end CP13 of the punching hole CP1 to the left and right sides. In other words, the relief portion CP6 is formed continuously with the proximal end region slit CP12 of the punching hole CP1, and extends linearly in a direction perpendicular to the virtual center line extending in the longitudinal direction of the cut and raised piece CP5. is there. In this embodiment, the angle α at which the slit of the relief portion CP6 and the proximal end region slit CP12 of the punching hole CP1 intersect is greater than approximately 90 degrees.

  The cut-and-raised piece CP5 substantially coincides with an imaginary line that connects the two base ends CP13 of the punching hole CP1 when the tip portion is associated with a cut hole (not shown) (not shown). To be bent at the base end CP52 of the cut and raised piece CP5, that is, the place shifted to the tip of the cut and raised piece CP5 from the virtual straight line connecting the two base ends CP13 of the punching hole CP1. Yes.

<Fifth Embodiment (FIG. 29)>
The punching hole DP1 formed by penetrating the paper DP with a punching blade (not shown) is the same as that of the first embodiment described above, but in this embodiment, the shape of the slit-like relief portion DP6 is different. ing.

  That is, the relief portion DP6 is a slit-like one extending outward from the base end DP13 of the punching hole DP1 to the left and right sides, and is formed continuously to the base end region slit DP12 of the punching hole DP1. However, the slit is not linear but curved. More specifically, the left and right relief portions DP6 made up of curved slits are curved so as to be convex toward a cut hole (not shown). In other words, the slits of the left and right relief portions DP6 first extend obliquely outward on the cut hole side (not shown) from the base end DP13 of the punching hole DP1, and then bend toward the side opposite to the cut hole from a substantially intermediate portion. It is what. Even the curved slit-shaped relief portion DP6 as shown in this embodiment can sufficiently achieve the intended purpose.

  The cut-and-raised piece DP5 substantially coincides with an imaginary line connecting the two base ends DP13 of the punching hole DP1 when the tip portion is associated with a cut hole (not shown) (not shown). To be bent at the base end DP52 of the cut and raised piece DP5, that is, the place shifted to the tip side of the cut and raised piece DP5 from the virtual straight line connecting the two base ends DP13 of the punching hole DP1. ing.

<Sixth Embodiment (FIG. 30)>
A punching hole EP1 formed by passing a punching blade (not shown) through the paper EP is the same as that of the first embodiment described above. However, in this embodiment, the shape of the slit-shaped escape portion EP6 is different. ing.

  That is, the escape portion EP6 is a slit-like one that extends continuously from the base end EP13 of the punching hole EP1, more specifically, is formed continuously from the base end region slit EP12 of the punching hole EP1. However, the slit-shaped escape portion EP6 has a straight portion and a curved portion. More specifically, the straight portions in the slit-shaped relief portion EP6 are slits extending in the same direction as the extending direction of the proximal end region slit EP12 from the two proximal ends EP13 of the punching hole EP1. The curved portion in the escape portion EP6 is a slit that is continuous with the linear portion, and is a slit that is curved so as to protrude toward the cut hole (not shown) (lower side in the drawing). Even if the escape portion EP6 is formed by a straight slit and a curved slit as shown in this embodiment, the intended purpose can be sufficiently achieved.

  The cut and raised piece EP5 is bent at the base end EP52 of the cut and raised piece EP5 when the tip portion of the cut and raised piece EP5 is engaged with a cut hole (not shown) (not shown). More specifically, in this embodiment, the cut-and-raised piece EP5 is a portion that substantially coincides with a virtual line that connects two base ends EP13 of the punching hole EP1, or two bases of the punching hole EP1. From the virtual straight line connecting the ends EP13 to the tip side of the cut and raised piece EP5, or from the virtual straight line connecting the two base ends EP13 of the punching hole EP1 to the cut hole side (not shown) It bends at any one of the locations.

<Seventh Embodiment (FIG. 31)>
A punching hole FP1 formed by passing a punching blade (not shown) through the paper FP is the same as that of the first embodiment described above, but in this embodiment, the shape of the slit-like relief portion P6 is different. ing.

  That is, the escape portion FP6 is a slit-like one extending outward from the base end FP13 of the punching hole FP1 to the left and right sides, and is formed continuously to the base end region slit FP12 of the punching hole FP1. The slits are not linear but curved. More specifically, the left and right relief portions FP6 formed of curved slits are curved so as to be concave on the side of a cut hole (not shown). In other words, the slits of the left and right relief portions FP6 first extend outward from the punching hole FP13 in a direction substantially orthogonal to the base end region slit FP12, and then gradually bend toward the cut hole side. . Even the escape portion FP6 formed by the curved slit as shown in this embodiment can sufficiently achieve the intended purpose.

  The cut-and-raised piece FP5 substantially coincides with an imaginary line connecting the two base ends of the punching hole FP1 when the tip portion of the cut-and-raised piece FP5 is engaged with a cut hole (not shown) (not shown). Bent at the base end FP52 of the cut-and-raised piece FP5, that is, a place slightly shifted to the tip portion of the cut-and-cut piece FP5 from the virtual straight line connecting the two base ends FP13 of the punching hole FP1. ing.

<Eighth Embodiment (FIG. 32)>
The punching hole GP1 formed by passing a punching blade (not shown) through the paper GP is the same as that of the first embodiment described above, but in this embodiment, the extending direction of the slit-like escape portion GP6 In other words, the formation location of the slit-shaped relief portion GP6 in the paper GP is different.

  That is, the escape portion GP in this embodiment extends inward from the base end of the punching hole GP1. In the illustrated example, the slits of the left and right relief portions GP6 extend in a straight line in directions close to each other, but of course may be curved. Even if the slit-shaped relief portions GP6 that form a pair extend in the direction in which they form a pair as shown in this embodiment, the intended purpose can be sufficiently achieved.

The cut-and-raised piece GP5 has a slit-like shape that forms two pairs of base ends GP13 of the punching hole GP1 or a pair when the tip portion is engaged with a cut hole (not shown) (not shown). The escape portion GP6 is bent at a location that substantially coincides with a virtual straight line that connects the tips of the escape portions GP6, that is, at the base end GP52 of the cut and raised piece GP5.
<Others>
The punching blade, which is a blade, can be applied to various types other than the binding machine shown in the present embodiment. That is, the blade only needs to have a blade body for forming a punching hole in the paper and an auxiliary blade for forming a relief portion in the paper. That is, the blade can form a relief portion that can suppress stress concentration on the base end of the cut and raised piece when the cut and raised piece formed on the paper is urged or pulled by receiving some external force. Anything can be used, and the present invention can be applied to various objects corresponding to the purpose of binding sheets.

  As long as the paper is in sheet form, various changes such as paper or plastic can be made. In addition, if a plurality of sheet bodies made of the same quality material are bound, it is possible to reduce the trouble in sorting and discarding. In each of the above-described embodiments, the description is mainly made on the assumption that the paper is a paper that is preferably used in an office or the like. The intended purpose can be achieved.

  In the present embodiment, the shape and size of the punching blade, the shape and size of the cutting blade, and the punching blade so that the width of the wide portion is smaller than the width of the widened portion. Although the relative position of the cutting blade has been set, the present invention can be carried out without being limited to such a setting if the operation speed of the blade driving mechanism is reduced or the number of sheets to be bound is reduced.

  In the above-described embodiment, among the edges from the wide part to the base end of the cut and raised piece, the cut and raised piece is engaged with the second slit at the edge from the wide part to the boundary part. Without being limited thereto, the cut and raised piece may be engaged with the second slit at the edge from the boundary portion to the base end. Further, there may be one place or a plurality of places to be engaged.

  The blade unit may have not only a three-piece structure of a cutting blade, a cutting blade and an inner cam, but also a two-piece structure of a cutting blade and a cutting blade. At this time, it is preferable that the punching blade is provided so as to be rotatable between a punching posture and a rotating posture, and a punching hole can be formed in the punching posture. That is, the punching mechanism allows the punching blade to penetrate the paper disposed on the lower surface side of the punching base from one side, and the punching blade penetrating the paper is rotated to the rotating position to rotate the punching hole to the other surface. What is necessary is just to provide the blade extraction mechanism which extracts the cutting blade holding the cutting and raising piece cut and raised to the side to the one surface side of the paper together with the cutting and raising piece. If a three-piece structure is used, the degree of freedom in designing the punching blade can be increased because an inner cam is used as an application for pushing the cut and raised pieces compared to a two-piece structure.

  The shape of the cutting blade and the shape of the cut hole formed by this cutting blade are not limited to those of the above-described embodiment. Further, the blade body of the cutting blade, that is, the blade formed on the first blade and the second blade may each have a so-called single-blade structure as shown in this embodiment, but the thickness direction of the material A double-edged structure having a cutting edge in the center may be used. In addition, even with a single blade structure, the blade body of the cutting blade, that is, the blade formed on the first blade and the second blade, respectively, has an outer blade structure having a blade edge only on the outer side in the thickness direction of the material. An inner blade structure having a blade edge only on the inner side in the thickness direction of the material may be used. With the outer blade structure, the cut hole can be made continuous without interruption even when it is bent into a U shape or an H shape, so that the appearance of the cut can be improved. it can. However, when the outer blade structure is used, the full length distance of the blade edge becomes longer, so that there is a problem that resistance increases when the cutting blade penetrates the paper. On the other hand, if the cutting blade has an inner blade structure, the problem that the resistance increases when the cutting blade penetrates into the paper can be solved. However, in the case of the inner blade structure, the cut hole is interrupted so that the appearance of the cut hole not only deteriorates, but also the front-rear distance between the main blade of the first blade and the second blade. On the other hand, there also arises a problem that the distance between the main slit and the second slit of the cut hole is reduced by the thickness of the cutting blade. Therefore, if a double-edged structure with a cutting edge in the center of the thickness direction of the material is adopted, the above-mentioned problems can be solved at once, and the cutting edge has only one side like the outer blade structure and the inner blade structure. It is also possible to suppress the problem of blade warpage that tends to occur.

  The second blade is not limited to one that is cut and raised integrally from the window as described in the above embodiment, and may be one that is attached separately. Further, the second blade is not limited to those disposed on both sides of the window, and may be provided only on one side of the window.

  The inner cam is not limited to one in which the arm directly contacts the locking wall, and may have a shaft-like protrusion provided at the tip of the arm. In this case, the shaft-shaped protrusion may be configured such that the inner cam rotates from the initial posture to the rotating posture on the lower surface of the locking wall.

  Further, the anvil of the punch base is not limited to a so-called fixed type attached to the base portion as shown in the present embodiment, and may be a movable type. As such, for example, the anvil is separated from the stationary anvil portion from a stationary anvil portion that is held in a fixed position, and a punching position capable of backing and supporting paper in cooperation with the stationary anvil portion. The thing provided with the movable anvil part which can move to the separation position which does not inhibit inserting the cut and raised piece into the said cut hole, etc. can be considered.

  In this embodiment, the window cover is set so that the upper part of the cutting blade is opened. However, when the bank-like wall is relatively low, the cutting blade is used to ensure the safety of the user. It is preferable to set it so that it can be opened only to a position covering the upper side of.

  The second link member and the lever plate may be provided separately from each other, and the lower support shaft of the second link member and the support shaft of the lever plate rotate to the base portion, respectively. As long as it is pivotally supported, it is not limited to those having the same spindle.

  The positioning portion is not limited to the one provided on the base frame and its locking wall, and the shape thereof can be variously changed. For example, the positioning part may be provided on a base cover, an anvil, a top case or the like of the base part. Moreover, you may provide the hollow etc. which can match | combine the corner | angular part of a sheet | seat, without having a locking wall.

  In the above-described embodiment, the compression mechanism is mainly composed of the raised portion of the base frame and the raised portion of the anvil. However, when the number of sheets to be bound is relatively small, You may not have a compression mechanism. That is, the present invention can exert its effect even if it does not have a compression mechanism that compresses and deforms the joining portion formed by the cut and raised piece penetrating the lifting cut hole in the thickness direction. If it has the said compression mechanism, it can suppress that the junction part of a booklet is bulky.

  Even if the blade driving mechanism does not use a link mechanism, any mechanism can be used as long as it operates the punching blade and the cutting blade in the vertical direction using the operating force applied to the operation lever on the base portion. It may be anything.

  Further, the blade extraction mechanism may be mainly composed of the coil spring S3. That is, even when the coil spring S1 is not disposed, the first link member 61 is rotated downward by the downward biasing force of the coil spring S3, and the drive shaft 36 is moved downward by this rotational operation. The blade unit 3 may be pushed down and as a result retracted to the standby position.

  In addition, various changes may be made without departing from the spirit of the present invention.

1 ... Binding machine 32 ... Cutting blade (blade)
33 ... Cutting blade 37 ... Blade body 38 ... Auxiliary blade portion 371 ... Tip region forming portion 374 ... Base end region forming portion D3 ... Window P ... Paper P1 ... Punching hole P2 ... Cut hole P5 ... Cut and raised piece P55 ... Tip region P54: Base region P56: Wide part

Claims (7)

A punching hole and a cut hole are formed in a plurality of sheets, and the tip of the cut and raised piece cut and raised from the punched hole is inserted into the cut hole, and a plurality of pieces are formed by the engagement between the cut and raised piece and the cut hole. A blade capable of forming the punching hole used in a binding machine capable of binding sheets of paper to each other;
A blade body for forming the punching hole, and a relief portion for suppressing breakage that relaxes stress concentration on the base end of the cut and raised piece when the cut and raised piece is inserted into the cut hole. A blade comprising: an auxiliary blade portion continuously extending laterally from a base end of the blade body. A punching blade and a cutting blade are passed through a plurality of sheets to form punched holes and cut holes in the sheets, and cut and raised pieces cut from the punched holes are formed in the window formed in the cutting blade. When inserting and removing the cutting blade from the paper, the leading end of the cut and raised piece inserted in the window is inserted into the cut hole, and the plurality of the sheets are engaged by the engagement between the cut and raised piece and the cut hole. A binding machine capable of binding sheets of paper to each other,
The punching blade includes an auxiliary blade portion for forming a break-off relief portion on the paper that relaxes stress concentration on the base end of the cut and raised piece when the cut and raised piece is inserted into the cut hole. A binding machine characterized by comprising The relief portion has a slit shape extending laterally from the proximal end of the punching hole, and the auxiliary blade portion for forming the relief portion is laterally extended from the proximal end of the blade body of the punching blade. The binding machine according to claim 2, wherein the binding machine has a blade shape extending continuously. The binding machine according to claim 3, wherein the blade body and the auxiliary blade portion are integrally formed using a common sheet metal material. The cut and raised piece has a distal end region including the distal end portion, and a proximal end region that is continuous with the distal end region and narrower than the widest widest portion of the distal end region,
The blade body includes a distal end region forming portion for forming the distal end region, and a proximal end region forming portion for forming the proximal end region formed continuously with the distal end region forming portion. The binding machine according to claim 3 or 4, wherein: The binding machine according to claim 2, 3, 4, or 5, wherein the auxiliary blade portion extends in a direction orthogonal to a longitudinal direction of the cut and raised piece. This is a sheet bundle in which a cut and raised piece cut and raised in a sheet is inserted into a cut hole formed in the sheet, and a plurality of sheets are bound together by the engagement between the cut and raised piece and the cut hole. A sheet bundle comprising a relief portion for suppressing tearing at a base end of the cut and raised piece of the sheet.

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