JP2007175785A - Driving machine of paper staple - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the appearance of bound documents and to prevent backlash of documents by hardly making a punched hole dirty, enabling application to a manual type machine, and reducing the driving load of a staple. <P>SOLUTION: A driving machine 22 for driving a U-shaped paper staple 11 in a documents P is disposed to elevate above a receiving table 29 for placing the documents P. The driving machine 22 includes: a horizontal fitting part (a horizontal part) 31; a pressing member 33 for pressing a staple crown part, which is provided to elevate on the lower side of the fitting part 31; and leg parts 23, 23 with blades fitted to both right and left sides of the fitting part 31, respectively. The inside surfaces of the leg parts 23, 23 are provided with tapered projecting parts 32, 32 for placing and setting the paper staple 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper staple driving machine, and more particularly to a new and useful paper staple driving machine used when a U-shaped paper staple is driven and bound into a document.

2. Description of the Related Art Conventionally, as a non-metallic staple driving machine, a machine having a square hole in a leg portion with a blade (hereinafter referred to as a punching blade) is known. The staple penetrating method using this driving machine is such that a punching blade having a square hole is passed through the back side of the document, and then the staple is inserted into the square hole of the punching blade and the staple is left as it is. (See Patent Document 1).
JP 10-000871 A

  The staple penetrating method described in Patent Document 1 has the following disadvantages because the paper staple is pulled out while the staple is inserted into the square hole. That is, since the square hole is made in the punching blade itself, the strength of the punching blade itself is insufficient. In order to increase the strength of the punching blade, it is only necessary to increase the thickness of the punching blade. In this case, however, the punching hole formed in the document becomes large and the periphery of the punching hole is easily damaged. .

  Further, in order to penetrate the staple into the document, the punching blade must be pulled out after the punching blade is inserted into the document. Accordingly, the two-stage action of inserting and extracting the punching blade is required, and the operability is deteriorated. In particular, it is not suitable for a manual machine.

Furthermore, when the staple is pulled out, the staple pull-out load is considerably increased because the adhesive surface of the staple is in contact with the end face of the punch hole. In addition, since there is a difference in size between the staple width and the punching blade width, when the document is bound, the punching hole becomes larger with respect to the staple, and the appearance of the binding portion is deteriorated, and the document is rattled. (See JP-A-60-94279).
Therefore, the technology that should be solved in order to make the punched hole difficult to be damaged, can be easily applied to manual machines, can reduce the above-mentioned punching load, improve the appearance, and prevent the document from rattling. The present invention aims to solve this problem.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is a paper staple driving machine formed in a U-shape, the driving machine being arranged on both sides of the horizontal portion. The leg portion is formed in a gate shape projecting substantially vertically from each of the portions, and a blade portion is formed at the distal end portion of the leg portion, and the paper staple is formed on the inner side portion of the leg portion. There is provided a paper staple driving machine in which protrusions for mounting the leg portions are provided opposite to each other and are formed to be movable up and down.

  According to this configuration, when paper staples are driven into a document on the cradle, the paper staples are placed and set on the protrusions inside the pair of legs. Next, the driving machine is lowered to the receiving table side, and the paper staple is pierced through the document and driven. Thereafter, the driving of the paper staple is completed by returning the driving machine to the original position.

  According to a second aspect of the present invention, there is provided the paper staple driving machine according to the first aspect, wherein the upper and lower sides of the protrusion are formed in a tapered shape.

  According to this configuration, since the protrusion has tapered surfaces on both the upper and lower sides of the outer peripheral portion, when the protrusion penetrates the document or returns to the original position after the penetration as the blade portion descends or rises, the protrusion Is slidably guided on the taper surface and smoothly penetrates without being caught by the document.

  According to a third aspect of the present invention, there is provided the paper staple driving machine according to the first or second aspect, wherein the protruding amount of the protrusion is formed larger than the paper thickness of the paper staple.

  According to this configuration, the protrusion amount of the protrusion is set to be slightly larger than the paper thickness of the paper staple, whereby the paper staple is stably supported by the protrusion.

  According to a fourth aspect of the present invention, there is provided the paper staple driving machine according to the first, second or third aspect, wherein the width of the blade portion is substantially the same as the width of the paper staple.

  According to this configuration, since the width dimension of the blade portion is substantially the same as the width dimension of the paper staple, the punched hole formed in the document after the staple driving and the size of the crown portion of the paper staple are approximately the same. Match. Therefore, there is almost no gap between the punched hole and the crown portion.

  According to a fifth aspect of the present invention, there is provided the paper staple driving machine according to the first aspect, wherein the horizontal portion is provided with a pressing member capable of moving up and down to press the crown portion of the paper staple.

  According to this configuration, after the driving machine is lowered to the receiving table and the paper staples are pierced through the blade with the paper staple, the pressing member remains in contact with the crown of the paper staple. Return the machine to the original position.

  According to the first aspect of the present invention, since the pair of blade portions do not have square holes as in the prior art, the strength of the blade portions increases. Therefore, it is not necessary to increase the plate thickness of the blade portion in order to increase the strength, and the punched hole can be formed smaller by that amount. Further, when the paper staple is driven, only a single action is required because the pair of blade portions need only be moved linearly only in the driving direction.

  Therefore, the operation stroke at the time of driving becomes short, and a simple structure driving machine suitable for a manual machine can be obtained.

  According to the second aspect of the present invention, since the protrusion does not catch on the document when the protrusion penetrates the document or returns, in addition to the effect of the invention of claim 1, the protrusion penetration operation and return to the document The operation becomes smooth and the operability of the driving machine is improved.

  According to the invention of claim 3, since the paper staple is stably supported at a predetermined position by the protrusion, in addition to the effect of the invention of claim 1 or 2, the paper staple may be displaced at the time of document penetration. The paper staples can be driven more easily into the desired location on the document.

  According to the invention of claim 4, since no gap is formed between the punched hole formed in the document and the crown portion of the paper staple, in addition to the effect of the invention of claim 1, 2, or 3, There is no rattling and it can be bound firmly. At the same time, the binding location is not easily soiled, and the appearance of the binding location is improved.

  According to the fifth aspect of the present invention, when clinching the paper staple, the crown portion of the paper staple can be pressed against the document by the pressing member. Clinching can be performed easily and reliably.

  The present invention is a paper staple driving machine formed in a U-shape, and the driving machine is formed in a gate shape in which legs protrude substantially vertically from both sides of a horizontal part. And a blade portion is formed at the tip of the leg, and a protrusion for placing the leg of the paper staple is provided opposite to the inside of the leg, and Since it is formed so as to be movable up and down, the object of preventing the fouling of the punched hole, being easily applicable to a manual type machine, improving the appearance and preventing the backlash of the document is achieved.

  The paper staple driven by the driving machine of the present invention can be used either of a type having an adhesive surface and a type having no adhesive surface. In particular, in the case of a paper staple having an adhesive surface, the load for driving the staple is reduced because the adhesive surface does not come into contact with the end face of the punched hole when the paper staple is driven.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. In this embodiment, in order to perform staple forward feeding, bending, cutting, driving, clinching and the like at a predetermined timing in relation to the staple driving operation, the driving means of each functional member, that is, a movement driving mechanism, a rotational driving Although a mechanism, a lift drive mechanism, and the like (not shown) are provided, a known drive method using a cam, a link, a spring, an electromagnet, or the like can be appropriately adopted as these drive methods.

  FIG. 1 is a block diagram showing an overall configuration of a paper stapling stapler 1. The stapler 1 includes a sheet storage unit 2 in which a rectangular staple sheet 8 made of paper is loaded and stored, a transfer unit 3 that sequentially feeds the staple sheet 8 at a constant pitch, and a front end side portion of the staple sheet 8 is bent. A bent forming portion 4 for forming a U-shaped connected staple 9, a shearing portion 5 for cutting the connected staple 9 into a single paper staple 11 into which the connected staple 9 can be driven, and both leg portions (vertical pieces) of the paper staple 11. ) Through the document P, and a clincher unit (clincher device) 7 that clinches both leg portions of the paper staple 11 that has penetrated the document P.

 A predetermined number of staple sheets 8 are stacked and stored in the sheet storage unit 2, and the staple sheets 8 are sequentially fed by the transfer unit 3 toward the bending unit 4 by predetermined steps. As the staple sheet 8, as shown in FIG. 2 (a), the adjacent crown portions 12 are connected to each other, more preferably, the perforation 13 is formed in the connected portion (FIG. 2 ( b)) Alternatively, it is preferable to use a slit 14 partially formed in place of the perforation 13 (FIG. 2C). In addition, the code | symbol 8a in FIG. 2 is a cut line.

  As shown in FIG. 3, the bending unit 4 is provided with a mounting table 15 on which the staple sheet 8 is placed. Above the mounting table 15, a bending mold 17 having a U-shaped molding surface 16 is raised and lowered. It is arranged to be possible. Therefore, after the staple sheet 8 is placed on the mounting table 15, when the bending mold 17 is lowered by the lift drive mechanism, both sides of the staple sheet 8 in the direction substantially perpendicular to the transfer direction are formed as shown in FIG. 4. It is bent into a U-shape (gate shape) corresponding to the surface 16. In this case, by setting the thickness T1 of the bending mold 17 to a dimension corresponding to several staple widths, several paper staples 11 can be formed into a U shape in one step. The external appearance of the connected staple 9 after molding is illustrated in FIG.

  After molding, the bending mold 17 is raised, and the connected staple 9 is sent to the shearing section 5 by the transfer section 3. As shown in FIG. 6, the shearing unit 5 includes a cutting table 18 provided on the forward feed side of the bending table 15, and a shearing blade 19 disposed to be movable up and down at an upper position on the front end side of the cutting table 18. . Therefore, after the connected staple 9 is placed on the cutting table 18 in a state shown in the drawing, that is, the foremost end portion 10 of the connecting staple 9 protrudes from the end surface of the cutting table 18 by a predetermined dimension, the shearing blade 19 is lowered by the lifting drive mechanism. If it does, it will cut | disconnect along the connection part (perforation 13 grade | etc.,) Of the crown part 12, and the U-shaped paper staple 11 will be isolate | separated. As the shearing blade 19, a flat tip type or a V tip type can be used as appropriate (FIG. 7).

  The cut paper staple 11 is sent to the driving unit 6 through a guide member (not shown) and driven into the document P by the driving machine 22. As shown in FIG. 8, the paper staple 11 has a crown portion 12 having a predetermined width W1, and a pair of leg portions 20 and 21 formed by bending both end portions of the crown portion 12 at a substantially right angle. . The width dimension W1 of the paper staple 11 is set to be substantially the same as the width dimension W2 of the blade portion 23a of the driving machine 22. As a result, as shown in FIG. 9, the width dimension of the punch hole 24 formed in the document P by the driving machine 22 and the paper staple 11 driven into the punch hole 24 are substantially the same. It is prevented that a gap is generated between them.

  The front end portion of the one leg portion 20 of the paper staple 11 is formed in a square shape, and a hooking hole (square window) 25 of a predetermined size is formed in the middle portion of the leg portion 20. On the other hand, the tip side portion of the other side leg portion 21 of the paper staple 11 is formed in a trapezoidal shape and gradually becomes narrower in the tip direction. In addition, a cut line 26 is formed in an arc shape in the middle portion of the leg portion 21, and an upward convex semi-arc-shaped latching piece 27 is formed by cutting along the cut line 26. Further, the driving unit 22 is disposed in the driving unit 6 so as to be movable up and down above the cradle 29, and the paper staple 11 is loaded and held in the standing direction from the lateral direction inside the driving unit 22. The driving machine 22 drives the paper staple 11 into the document P on the cradle 29 while holding the paper staple 11.

  Specifically, the driving machine 22 has a pair of leg portions (blade bodies) 23, 23 projecting substantially vertically on both sides, and the upper horizontal portion as a mounting portion 31, and the leg portions 23, 23 and the mounting portion. 31 is formed in a gate shape. Hole portions 23a and 23a for punching holes are formed at the tip portions of the leg portions 23 and 23, respectively. In addition, protrusions 32 and 32 for placing the paper staple 11 are provided on the inner side of the pair of leg portions 23 and 23 so as to face each other. Further, a pressing member (staple pressing member) 33 for pressing and holding the paper staple 11 is provided on the lower surface side of the mounting portion 31 so as to be movable up and down.

  The shape size of the pressing member 33 is substantially the same as that of the attachment portion 31. In the illustrated example, the concave curved surface 33a is formed on the lower surface of the pressing member 33. However, the concave curved surface 33a is not necessarily provided. . Further, the mounting portion 31 and the pressing member 33 are provided so as to be lifted and lowered independently from each other with respect to a stapler body (not shown) by a lifting drive mechanism. The pressing member 33 is disposed below the mounting portion 31, and the shaft portion 34 planted at the center of the upper surface of the pressing member 33 moves up and down in the fitting hole 30 formed in the central portion of the mounting portion 31. It is inserted as possible.

  As described above, the protrusions 32 and 32 for mounting and supporting the leg portions 20 and 21 of the paper staple 11 are provided on the inner surfaces of the pair of leg portions 23 and 23 in the vicinity of the distal ends. The protrusions 32 and 32 may be formed by press drawing, or may be formed by die casting or the like (FIGS. 11 and 12). The protrusion amount H of the protrusions 32 is set to be slightly larger than the thickness T of the paper staple 11 (FIG. 13A).

  As shown in FIG. 10, the front-view shape of the protrusions 32 and 32 is formed into a vertically asymmetric hexagon having a lower side shorter than the upper side, and in particular, the lower part of the protrusions 32 and 32 goes downward. Accordingly, it is formed in an inverted trapezoidal shape in which the lateral width is gradually narrowed. An upward taper surface 35a and a downward taper surface 35b are formed on the upper edge portion and the lower edge portion of the protrusions 32, 32, respectively. By the tapered surfaces 35a and 35b, the protrusions 32 and 32 can be smoothly raised and lowered without being caught by the document P when moving in the document P.

  Here, when the paper staple 11 is driven into the document P using the driving machine 22, first, the paper staple 11 is placed and set on the protrusions 32 and 32 inside the pair of leg portions 23 and 23 (see FIG. 13 (a)), the pressing member 33 is lowered to hold the paper staple 11 stably. After that, when the entire driving machine 22 is lowered, a punch hole 24 is formed in the document P by the blade portions 23a and 23a of the pair of leg portions 23 and 23, and the punch hole 24 is formed in the leg portion 20 of the paper staple 11. , 21 penetrates.

  At that time, the peripheral edge of the punch hole 24 is pushed and widened by the downward tapered surface 35 b of the protrusions 32, 32, so that the leg portions 20, 21 of the paper staple 11 pass through the punch hole 24 of the document P smoothly. After this, the leg portions 23 and 23 and the pressing member 33 are raised to the forward dimension position. Usually, the pressing member 33 is raised to the original position after the paper staple 11 is clinched (FIG. 13B). Thereby, the crown portion 12 of the paper staple 11 can be reliably pressed by the pressing member 33.

  A clincher device 7 for clinching the legs 20 and 21 of the paper staple 11 is provided below the driving unit 6 shown in FIG. The clincher device 7 bends the receiving base 29 on which the document P is placed in the longitudinal direction L and the one side leg portion 20 of the paper staple 11 driven into the document P on the receiving base 29. While holding the first clincher 37 and the other leg 21 of the paper staple 11, the first clincher 37 is moved to a position just below the catching hole 25 of the one leg 20, and the catching piece 27 is moved along the substantially arcuate cut line 26. The second clincher 38 that bends the narrow width portion 43 below the latching piece 27 to the one leg 20 side in a substantially U shape, and the latching piece 27 and the narrow width portion 43 are combined. And a pushing member 44 for pushing into the engaging hole 25 of the side leg portion 20. The clincher 37, 38 is extended in the same direction as the longitudinal direction L of the cradle 29.

  The cradle 29 can be formed in an appropriate shape such as a flat plate shape as necessary, but in the configuration example of FIG. 8, it is formed in a substantially semi-circular shape having a substantially semicircular cross section. A recess 39 is formed in the lower surface of the cradle 29. One side of the recess 39 is formed in an open state.

  The first clincher 37 is formed in an elongated round bar shape having a predetermined length, and is disposed below one side in the left-right direction B of the cradle 29. The second clincher 38 is disposed on the other side of the cradle 29. It is arranged near the side. The clinchers 37 and 38 are provided so as to be movable in an arbitrary direction with respect to the cradle 29 by a movement drive mechanism.

  The second clincher 38 includes a flat plate-like clincher main body 40 having a predetermined thickness, and a pair of rod-like holding members 41 and 42 horizontally arranged on one end surface in the longitudinal direction L of the clincher main body 40. . One holding member 41 is formed in a substantially quarter-circular cross section, while the other holding member 42 is formed in a substantially circular cross section. In addition, you may form the holding member 41 in a substantially circular cross section.

  The pair of holding members 41 and 42 are provided to be separated from each other in the left-right width direction B of the clincher main body 40, and the other leg of the paper staple 11 that penetrates the document P is interposed between the pair of holding members 41 and 42. Part 21 is inserted. The pair of holding members 41, 42 are moved directly below the engagement hole 25 by the movement drive mechanism, thereby inserting the engagement piece 27 formed on the other leg 21 into the engagement hole 25. Furthermore, when the holding members 41 and 42 are moved by about 180 ° (half rotation movement) toward the first clincher 37 side, the distal side narrow width portion 43 of the other side leg portion 21 is bent and deformed in a substantially U shape.

  A pushing member 44 is provided below the clincher 37 and 38, and the pushing member 44 is formed in a substantially rectangular parallelepiped. The other leg 21 curved in the U-shape has the engaging hole 25 extending along the lower surface of the cradle 29 by lifting the push-in member 44 with the lifting drive mechanism after retracting the holding members 41, 42. It is pushed into the periphery.

  In this embodiment, a case where the document P is bound by the paper staple 11 will be described. First, the paper P is applied to the upper surface of the receiving plate 29 and set so as to have a convex curved shape, and then the paper staple 11 is driven together with the paper staple 11 by the driving machine 22, thereby forming the paper P. Since the punching hole 24 is pushed and widened by the downward tapered surface 35b of the protrusions 32, 32, the leg portions 20, 21 of the paper staple 11 smoothly penetrate the document P (FIGS. 14A and 14B). ).

  In the state after the staple driving, the other leg 21 of the paper staple 11 is inserted and held between the pair of holding members 41 and 42 of the second clincher 38, and the one leg 20 is the first leg 20. It is located inside the clincher 37. Then, when the first clincher 37 moves inward toward the inner side of the cradle 29 to the position near the recess 39, the hanging portion of the one side leg 20 is bent inward along the lower surface of the cradle 29. (FIG. 14 (c), FIG. 16 (a)).

  Thereafter, the pair of holding members 41, 42 inserted through the other leg portion 21 moves to a position directly below the engagement hole 25 of the one leg portion 20, and the leg portion 21 follows the lower surface of the cradle 29. So that it is folded inward. At the same time, since the pair of holding members 41 and 42 themselves do not rotate, as shown in FIG. 15A, the latching piece 27 below the cut line 26 of the leg portion 21 is held in an upright state. As it is, it is inserted in the vicinity of the end in the engagement hole 25 (FIGS. 14D and 16B).

  Next, as shown in FIG. 15B, the substantially quarter-circular holding member 41 of the second clincher 38 rotates (reversely moves) about 180 ° toward the engagement hole 25 with the substantially circular holding member 42 as the center. Further, the distal side narrow portion 43 of the other side leg portion 21 is curved in a substantially U shape so as to wrap around the outer peripheral surface of the substantially circular holding member 42, and the curved distal side narrow portion 43 is engaged with the engagement hole 25. (FIGS. 14E and 16C).

  And as shown in FIG.15 (c), after a pair of holding members 41 and 42 retract | save with respect to the paper staples 11, the pushing-in member 44 raises toward a U-shaped curve. Thereby, the front end side narrow width part 43 and the latching piece 27 of the leg part 21 are pushed into the recess 39 of the cradle 29 (FIG. 14 (f)).

  Thereafter, when the cradle 29 is retracted to the outside of the document P, the narrow width portion 43 and the latching piece 27 of the other leg 21 are separated from each other between the lower surface of the document P and the upper surface of the one leg 20. The curved portion of the other leg 21 returns to the flat shape, and the document P also returns to the flat shape. Therefore, the latching piece 27 and the narrow width portion 43 are latched and clinched to the peripheral edge portions on both sides of the latching hole 25. Thus, the latching dimensions of the narrow width portion 43 and the latching piece 27 with respect to the latching hole 25 are equal to each other, and the document P is reliably bound in a stable state. (FIGS. 14 (g) and 16 (d)).

  According to the present embodiment, the leg portions (blade bodies) 23 and 23 of the driving machine 22 do not have holes, so that high strength can be maintained. There is no need to increase the thickness of the portions 23a, 23a. As a result, the size of the punch hole 24 formed by the blade portions 23a and 23a is reduced. Further, when the paper staple 11 is passed through the document P, the punching operation of the driving machine 22 can be performed in one direction, so that the operation stroke of the blade portions 23a and 23a can be reduced, which is also suitable for a manual stapler. It will be a thing.

  The driving machine 22 drives the paper staple 11 while expanding the punch hole 24 of the document P with the protrusions 32 and 32 inside the blade portions 23a and 23a, so that the paper staple 11 and the document P do not come into contact with each other. Further, since the width dimensions of the blade portions 23a and 23a and the paper staple 11 are substantially the same, the sizes of the paper staple 11 and the punch hole 24 are matched with each other, and it is possible to prevent the backlash from occurring between them. For this reason, the document P can be bound firmly and the appearance of the binding location is also improved.

  Further, since the tapered surfaces 35a and 35b are formed on the upper and lower sides of the outer periphery of the protrusions 32 and 32, the protrusions 32 and 32 are smoothly caught without being caught by the document P when the protrusions 32 and 32 pass through the document or return. Can move.

  Furthermore, since the protruding amounts of the protrusions 32 and 32 are set slightly larger than the paper thickness of the paper staple 11, the paper staple 11 can be stably supported by the protrusions 32 and 32. Therefore, the paper staple 11 can be reliably driven into a desired position of the document P without the paper staple 11 being displaced with respect to the document P.

  Next, another embodiment of the present invention will be described with reference to FIG. Note that the same components as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The paper staple 50 according to the present embodiment has an adhesive surface 45 on the inner surface of the other leg 21. The clincher cradle 49 that is movably provided has a through hole 48 on the upper surface, and the one leg 20 and the other leg 21 of the paper staple 50 are bent at predetermined positions of the cradle 49. A rod-shaped first clincher 46 and a second clincher 47 are provided so as to be movable. In addition, the lower surface of the pressing member 33 of the driving machine 22 is formed in a flat shape, and no curved surface (reference numeral 33a in FIG. 8) is provided.

  In this embodiment, when the paper staple 50 is driven into the document P and bound, first, the paper staple 50 is placed and set on the protrusions 32 and 32 on the inner side of the pair of leg portions 23 and 23, and the pressing member is placed. 33 is lowered, and the paper staple 50 is pressed against the protrusions 32 and 32 to be held stably (FIG. 17A).

  Thereafter, the driving machine 22 is lowered, and the blade portions 23a and 23a of the leg portions 23 and 23 are inserted into the document P to form the punch holes 24 (FIG. 17B). Further, the driving machine 22 is lowered, and both the leg portions 20 and 21 of the paper staple 50 are penetrated through the punching hole 24 together with the blade portions 23a and 23a (FIG. 17C). At the time of the staple penetration, the peripheral edge of the punch hole 24 of the document P is gradually pushed downward by the outer peripheral tapered surface 35b of the protrusions 32, 32, and the paper staple 50 smoothly passes through the punched punch hole 24. To penetrate.

  Thus, even when the leg portions 23 and 23 return to the original upper position, the crown portion 12 of the paper staple 50 remains pressed by the pressing member 33 (FIG. 17D). Thereafter, the first clincher 46 moves toward the center of the punch hole 24, and the one leg portion 20 of the paper staple 50 is bent inward by about 90 ° (FIG. 17E). Next, the second clincher 47 moves to the center side of the punch hole 24, and the other leg portion 21 of the paper staple 50 is bent inward by about 90 ° (FIG. 17F). As a result, the other leg 21 is superposed on the one leg 20 of the paper staple 50, and the two are bonded together via the adhesive surface 45 to bind the document P.

  Due to the above-described operation, the present embodiment has the same effect as the one embodiment. In particular, in the process of driving the document P with the blade portions 23a, 23a, the paper staple 50 penetrates the punch hole 24 after the punch hole 24 is pushed downward by the protrusions 32, 32. The adhesive surface 45 of the other leg portion 50 of the 50 does not contact the document P. That is, when the paper staple 50 is driven, the adhesive surface 45 of the paper staple 50 does not come into contact with the end face of the punch hole 24. Therefore, the driving load of the paper staple 50 is significantly reduced compared to the conventional case, and the driving machine 22 is driven. Improved operability.

  The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified one. For example, in the present embodiment, the staple sheet 8 having a predetermined length is stacked and loaded in the sheet storage unit 2, but the staple sheet 8 provided in a long shape is wound in a roll shape and the sheet storage unit 2. It may be housed in a container, and sequentially fed to the tip side to be supplied.

1 is a block diagram illustrating an overall configuration of a stapler according to an embodiment of the present invention. 1A and 1B show a staple sheet according to the present invention, in which FIG. 1A is a perspective view of an ordinary crown-linked staple sheet, FIG. 1B is a perspective view of a perforated staple sheet, and FIG. The perspective view of a sheet | seat. The perspective view explaining the state before bending-molding the staple sheet which concerns on this invention. The perspective view explaining the state after bending and forming the staple sheet of FIG. 1A and 1B show a staple sheet folded into a U-shape according to the present invention, in which FIG. 1A is a perspective view of an ordinary crown-linked staple sheet, FIG. 1B is a perspective view of a perforated staple sheet, and FIG. The perspective view of a partial connection type staple sheet. Sectional drawing explaining the state which cut | disconnects the connection staple which concerns on this invention with a blade. Sectional drawing explaining the state which cut | disconnects a connection staple with another blade. The perspective view which shows the driving | running | working part and clincher part which concern on one Example. The perspective view which shows the crown part after driving the paper-made staple which concerns on one Example into a document. The perspective view which shows the structural example of the protrusion of the blade part which concerns on one Example. AA sectional drawing which shows the structural example of the protrusion of the blade part of FIG. The AA sectional view showing other examples of composition of the projection of the blade part of FIG. The paper staple which concerns on one Example is shown in the driving | running | working machine, and shows the state driven, (a) is sectional drawing before driving | running, (b) is sectional drawing after driving | running. FIGS. 4A and 4B show each process when paper staples according to an embodiment are driven into a document for binding, and FIG. 5A is a process diagram before the staple penetrates the document, and FIG. (C) is a process diagram when one side leg portion of the staple is bent inward, and (d) is a process diagram when the latching piece of the other leg portion of the staple is raised. (E) is a process diagram when the narrow portion of the other leg portion of the staple is bent, (f) is a process diagram when the curved portion of the other leg portion of the staple is inserted into the hooking hole, g) is a process diagram when a document is bound with the staple. The appearance of each process at the time of driving in the paper staple which concerns on one Example to a document is shown, (a) is a perspective view which shows the state which stood up the latching piece of the other side leg part of the staple, (b). The perspective view which shows the state which curved the narrow part of the other side leg part of the staple, (c) is a perspective view explaining the state which pushes the curved part of the other side leg part of the staple into a latching hole. The appearance when each step is seen from the lower side when the paper staple according to one embodiment is driven into a document and bent, (a) is a perspective view showing a state where one side leg of the staple is bent, (B) is a perspective view showing a state immediately before putting the latching piece of the other leg of the staple into the latching hole, and (c) is just after putting the latching piece of the other leg of the staple into the latching hole. The perspective view which shows the state of this, (d) is a perspective view which shows the state which the bending of the staple was completed. FIGS. 4A and 4B show the respective steps when a paper staple according to another embodiment of the present invention is driven into a document with a driving machine and folded, (a) is a sectional view before the driving machine is driven into the document, and (b) is a drawing of the driving machine. (C) is a cross-sectional view when the staple is penetrated into the document together with the blade portion, (d) is a cross-sectional view when the blade portion is raised and returned, e) A cross-sectional view when the one side leg of the staple is bent, and (f) a cross-sectional view when the other side leg of the staple is bent.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stapler 2 Sheet storage part 3 Transfer part 4 Bending molding part 5 Shearing part 6 Driving part 7 Clincher part (clincher device)
8 Staple sheet 9 Linked staple 11 Paper staple 12 Crown part 13 Perforation 14 Slit 15 Mounting table 16 Forming surface 17 Bending mold 18 Cutting table 19 Shearing blade 20 One side leg (one side vertical piece)
21 Other side leg (vertical piece on the other side)
22 Driving machine 23 Leg part 23a Blade part 24 Punching hole 25 Engagement hole 26 Cut line 27 Engagement piece (claw part)
29 Receiving base 30 Fitting hole 31 Mounting part (horizontal part)
32 Projection 33 Pressing member 33a Curved surface 34 Shaft 35a Upward tapered surface 35b Downward tapered surface 37 First clincher 38 Second clincher 39 Recess 40 Clincher main body 41 Substantially semicircular holding member 42 Substantially circular holding member 43 Narrow Portion 44 Pushing member 45 Adhesive surface 46 First clincher 47 Second clincher 48 Through hole 49 Receptacle 50 Paper staple P Document

Claims (5)

  A paper staple driving machine formed into a U-shape, wherein the driving machine is formed in a gate shape in which legs protrude substantially vertically from both sides of a horizontal part, and A blade portion is formed at the tip of the leg portion, and a protrusion for placing the paper staple leg portion on the inner side of the leg portion is opposed to the leg portion. A paper staple driving machine characterized by being formed.   2. The paper staple driving machine according to claim 1, wherein both upper and lower sides of the protrusion are tapered.   3. The paper staple driving machine according to claim 1, wherein the protruding amount of the protrusion is formed larger than the paper thickness of the paper staple.   4. The paper staple driving machine according to claim 1, wherein a width dimension of the blade portion is substantially the same as a width dimension of the paper staple. 2. The paper staple driving machine according to claim 1, wherein the horizontal portion is provided with a vertically movable pressing member that presses a crown portion of the paper staple.

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