JP2011230468A - Tongue piece cutter of binding apparatus, and binding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tongue piece cutter and a binding apparatus which enables stable cut surface of the tongue piece without increasing production cost.SOLUTION: The tongue piece cutter 1 includes: a thin plate blade body 11 having a thin plate blade end 111 with a blade portion 111a formed thereon to form a tongue piece on the end of the thin plate; a spacer body 12 to be inserted into the inside of the thin plate blade body 11. While a concave portion 111b depressed into the direction of the blade portion 111a is formed on the other side of the blade portion 111a at the thin plate blade end 111, a first convex portion 121a to fit into the concave portion 111b is formed on the portion corresponding to the concave portion 111b of the spacer body 12.

Description

  The present invention relates to a tongue cutter of a binding device that binds a binding object such as a document without using a metal needle, and a binding device.

  As a binding device that forms a tongue piece and a slit by cutting a binding object such as a document without using a metal needle and passes the tongue piece through the slit, for example, a tongue piece and A device using two thin plate-like cutters (first and second punches) that form slits and a rotating claw that bends the formed tongue piece and inserts it into the slit (for example, see Patent Document 1), tongue An apparatus in which a cutter for forming a piece has a function of a rotating claw has been proposed (see, for example, Patent Documents 2 and 3).

JP-A-8-300847 JP 9-1111241 A JP 2008-110468 A

  However, the tongue piece cutter (first punch) of the binding device described in Patent Document 1 cuts a binding object such as a document while forming a thin plate to form a tongue piece. There is a problem that the cut end is not stable due to, for example, the cutter tip spreading.

  Further, in the devices of Patent Documents 2 and 3, the tongue piece cutter is integrally formed into a thick plate shape and has a function of a rotating claw. Therefore, like the tongue piece cutter of Patent Document 1, the tip of the cutter is Although the problem of spreading is unlikely to occur, it is difficult to manufacture the cutter tip sharply because it is integrally molded into a thick plate shape. There is a problem that it becomes fuzzy or rough and the cut surface is not stable.

  Then, an object of this invention is to provide the tongue piece cutter of the binding apparatus with which the cut end of a tongue piece is stabilized, and a binding apparatus without incurring manufacturing cost.

In order to solve the above-mentioned problem, the tongue piece cutter of the binding device of the present invention forms a tongue piece by cutting the object to be bound, and passes the formed tongue piece through the slit formed by the slit cutter. A tongue cutter of a binding device for binding an object, a thin blade main body having a thin blade front end formed with a blade portion for forming the tongue at the thin plate tip, and inserted inside the thin blade main body A concave portion that is recessed in the direction of the blade portion is formed on the opposite side of the blade portion at the tip portion of the thin plate blade, while the spacer main body corresponding to the concave portion is The tongue piece cutter of the binding device is formed with a first convex portion that fits into the concave portion.
Here, in the tongue piece cutter of the binding device, it is further preferable that the concave portion and the first convex portion have a substantially semicircular shape.
Further, in the tongue piece cutter of the binding device, the front of the base of the spacer body protrudes forward of the base of the thin blade main body and is thicker than the spacer main body. It is further preferable that a second convex portion to be supported is formed.
Further, in the tongue piece cutter of the binding device, the rear of the base of the spacer main body protrudes rearward from the base of the thin blade main body and is thicker than the spacer main body, and the base of the thin blade main body is rearward It is further preferable that a third convex portion to be supported is formed.
The binding device of the present invention includes a tongue piece cutter of any of the above-described binding devices, and a slit cutter that forms a slit through which a tongue piece formed by the tongue piece cutter of the binding device passes. The binding device is characterized in that a tongue piece is formed on a binding object by a tongue piece cutter of the binding device, bent, and passed through a slit formed by the slit cutter, thereby binding the binding object.

  In the tongue piece cutter of the binding device and the binding device of the present invention, at least a thin plate blade body having a thin plate blade tip portion in which a blade portion for forming the tongue piece is formed at the thin plate tip, and the thin plate blade body A spacer main body inserted on the inside, and a recess recessed in the direction of the blade is formed on the opposite side of the blade at the tip of the thin blade, while the recess corresponds to the recess Since the 1st convex part which fits into the said recessed part is formed in the location in a spacer main body, the cut end of a tongue piece can be stabilized without incurring manufacturing cost.

(A), (b) is the front perspective view and back perspective view which respectively show an example of the external appearance of the tongue piece cutter of the binding apparatus of Embodiment 1. FIG. It is a disassembled perspective view of the tongue piece cutter of the binding device of Embodiment 1 shown in FIG. (A)-(e) is the front view of the tongue piece cutter of the binding device of Embodiment 1, respectively, a top view, a left side view, a right side view, and a bottom view. It is AA sectional view taken on the line of the tongue piece cutter of the binding apparatus of Embodiment 1 shown in FIG. (A), (b) is the front perspective view and back perspective view which respectively show an example of the external appearance of the binding apparatus of Embodiment 2. FIG. It is a disassembled perspective view of the binding device of Embodiment 2 shown in FIG.

Embodiment 1 FIG.
First, as Embodiment 1 of the present invention, an example of the tongue piece cutter 1 of the binding device will be described.

  FIGS. 1A and 1B are a front perspective view and a rear perspective view, respectively, showing an example of the appearance of the tongue piece cutter 1 of the first embodiment, and FIG. 2 is a tongue of the first embodiment shown in FIG. 3 (a) to 3 (e) are respectively a front view, a top view, a left side view, a right side view, and a bottom view of the tongue piece cutter 1 of the first embodiment shown in FIG. 4 and 4 are cross-sectional views taken along line AA of the tongue piece cutter 1 of the first embodiment shown in FIG.

  As shown in FIGS. 1 to 3, the tongue piece cutter 1 of the first embodiment includes a thin blade main body 11 and a spacer main body 12.

  The thin blade main body 11 is formed, for example, by cutting a thin plate made of a metal such as stainless steel or an alloy into a predetermined shape and then bending it into a substantially U shape, and cuts a binding object such as a document at the tip of the thin plate. The thin plate blade tip portion 111 formed with the blade portion 111a, the thin plate blade barrel portion 112 having a narrower width than the thin plate blade tip portion 111, and the thin plate blade base portion 113 continuous with the thin plate blade barrel portion 112 and formed with the shaft hole 113a. And have. In the present embodiment, a document or the like is a binding target, but the document or the like is an example, and a thin plastic or the like may be a binding target.

  A concave portion 111b that is recessed in a semicircular shape in the direction of the blade portion 111a is formed on the opposite side of the blade portion 111a in the thin blade edge portion 111.

  On the other hand, the spacer main body 12 is inserted into the thin blade main body 11 formed by being bent into a U-shape, and is made of resin or the like. The thin blade main end 11 of the thin blade main body 11 and the thin blade main body. 112, corresponding to the thin blade base 113, a spacer tip 121, a spacer body 122, and a spacer base 123.

  The spacer tip 121 has a substantially semicircular first convex 121 a that fits into the recess 111 b at a location corresponding to the recess 111 b of the thin blade tip 111.

  The spacer base 123 is formed with a shaft hole 123a having a diameter slightly larger than that of the shaft hole 113a at a position corresponding to the shaft hole 113a of the thin blade base 113.

  And in this Embodiment 1, it protrudes ahead from the thin blade base 113 of the thin blade main body 11 ahead of the spacer base 123, becomes thicker than the spacer main body 12, and supports the thin blade base 113 from the front. The convex portion 123b is formed. A spring convex portion 123d into which a spring 14 (see FIG. 6 described later) for returning the tongue piece cutter 1 of the rotated binding device is fitted is formed below the second convex portion 123b. .

  Further, in the present embodiment, the rear side of the spacer base 123 side protrudes rearward from the thin blade base 113 of the thin blade main body 11, becomes thicker than the spacer main body 12, and positions the thin blade base 113 from the rear. The convex portion 123c is formed.

  And in this Embodiment 1, the side surface of these 1st convex parts 121a, the 2nd convex part 123b, and the 3rd convex part 123c which were provided in the spacer main body 12, and the side surface of the thin-blade front-end | tip part 111, Is almost the same. Even if they are not flush with each other, the side surfaces of the first to third convex portions 121 a to 123 c may not protrude from the side surface of the thin blade edge portion 111.

  Next, referring to FIG. 4, the opening prevention function of the thin blade main body 11 by the recess 111 b provided in the thin blade main body 11 of the present embodiment and the first protrusion 121 a provided in the spacer main body 12. explain.

  As shown in FIG. 4, the blade portion 111 a formed on the thin blade edge portion 111 is formed with the periphery of the cutter through hole 40 a of the lower presser base 40 (see FIG. 6 described later) described in the second embodiment. If the gap between them is set as small as possible, it is possible to easily and surely cut the binding target, so as shown in FIG. 1 to FIG. The blade portion 111a is formed with a blade attached to one side inclined from the outside to the inside like a sword.

  When the tongue 111a is formed, the blade 111a receives resistance forces F and F 'from the object to be bound, as shown in FIG. 4, and the thin blade tip 111 has forces N and N' to open outward. appear.

  By the way, since the thin blade main body 11 is difficult to bend into a U shape unless the thickness of the thin plate is made as thin as possible, generally a thin plate of about 0.5 mm to 0.6 mm is used.

  For this reason, when the thin blade main body 11 receives forces N and N ′ that try to open outward from the binding target when the tongue piece is formed, the thin blade tip 111 is deformed outward, and in some cases, the original shape. In other words, there is a possibility that the thin blade tip 111 may come into contact with the periphery of the cutter through hole 40a of the lower presser base 40 (see FIG. 6 described later). In particular, when the thin blade main body 11 is used for a long time, the spring property of the thin blade main body 11 is gradually weakened due to a change in diameter, and the thin blade edge 111 is easily opened.

  Therefore, in the present embodiment, a substantially semicircular concave portion 111b is provided on the opposite side of the blade portion 111a in the thin plate blade tip portion 111, while the spacer tip portion 121 has a semicircular shape of the recess portion 111b of the thin plate blade tip portion 111. The combined first convex portion 121a is provided, and the thin blade main body 11 is opened by the frictional forces M and M ′ between the concave portion 111b of the thin blade edge portion 111 and the first convex portion 121a of the spacer main body 12. The forces N and N ′ are to be stopped.

  That is, in this embodiment, when the blade portion 111a of the thin plate blade tip portion 111 receives the resistance force F, F ′ from the binding object during the formation of the tongue piece, the thin plate blade tip portion 111 becomes the first of the spacer main body 12. The repulsive forces H and H ′ are received from the convex portion 121 a and forces N and N ′ are generated to open the blade portion 111 a, but the concave portion 111 b on the opposite side of the blade portion 111 a is the first end of the spacer tip 121. Since the vertical forces H and H ′ are received as repulsive forces from the convex portions 121a, static friction forces M and M ′ are generated in directions opposite to the forces N and N ′, respectively, and the static friction forces M and M ′. This prevents the thin blade edge 111 from being opened.

  Here, generally, the static frictional force M (M ′) = the normal drag H (H ′) × the friction coefficient μ. Therefore, as the resistance forces F and F ′ received from the object to be bound at the tip of the thin blade main body 11 when the tongue piece is formed, the vertical forces H and H ′ that are repulsive forces also increase. That is, when the friction coefficient μ is constant, the static friction forces M and M ′ increase as the vertical drag forces H and H ′ increase. Therefore, as the binding object is bound, the thin blade edge 111 is opened more. More can be prevented.

  Therefore, in the tongue piece cutter 1 of the first embodiment, at the time of tongue piece formation, the static frictional forces M and M ′ between the concave portion 111b of the thin blade edge portion 111 and the first convex portion 121a of the spacer body 12 are formed. Thereby, it can prevent reliably that the thin-blade front-end | tip part 111 of the thin-blade main body 11 spreads outside.

  In particular, in the tongue piece cutter 1 of the first embodiment, when the tongue piece is formed or when the formed tongue piece is bent, the resistance forces F and F ′ received by the blade portion 111a of the thin blade main body 11 from the binding object. Since the first convex portion 121a of the spacer body 12 directly receives the concave portion 111b through the concave portion 111b, the thin blade edge portion 111 can be prevented from being bent in the direction of the thin blade base portion 113.

  Moreover, in the tongue piece cutter 1 of this Embodiment 1, the shape of the recessed part 111b of the thin-blade front-end | tip part 111 and the 1st convex part 121a of the spacer main body 12 is formed in the semicircle shape which each fits. Therefore, when the tongue piece is formed or when the formed tongue piece is bent, even if the thin plate blade tip 111 receives the resistance forces F and F ′ from various directions (angles) from the binding object, it is dispersed and evenly distributed. Can be supported.

  Moreover, in the tongue piece cutter 1 of this Embodiment 1, since the 2nd convex part 123b and the 3rd convex part 123c are provided in the spacer base 123, the thin-blade front-end | tip part 111 cuts with respect to the binding target object. When entering, the spacer body 12 receives the resistance forces F and F ′ received by the thin blade main body 11 from the binding object through the second convex portion 123b and the third convex portion 123c as well as the first convex portion 121a. However, since the resistance force F, F ′ can be received by the whole tongue piece cutter 1, it is possible to prevent the thin blade main body 11 from being displaced from the spacer main body 12. Further, when the spacer main body 12 is inserted or fitted into the thin blade main body 11, the second convex portion 123b and the third convex portion 123c of the spacer main body 12 serve as a guide or positioning. The positions of the hole 113a and the shaft hole 123a of the pacer body 12 can be easily aligned.

  In the tongue cutter 1 according to the first embodiment, the thin blade main body 11 has been described as having the thin blade blade tip 111, the thin blade body 112, and the thin blade base 113 as described above. However, the present invention is not limited to this, and is not limited to the above as long as it has a thin plate blade tip portion in which a blade portion 111a for forming a tongue piece is formed at the thin plate tip. Even if the body portion 112 is omitted, or the thin blade main body 11 is not bent into a U shape, the thin blade is further bent and then cut into a predetermined shape to form the thin blade main body 11 But of course.

  Moreover, in the tongue piece cutter 1 of this Embodiment 1, although the shape of the recessed part 111b of the thin-blade front-end | tip part 111 and the 1st convex part 121 of the spacer main body 12 was demonstrated as a substantially semicircle shape to fit, In the present invention, the present invention is not limited to this, and when the thin plate blade tip 111 cuts the binding object, the thin blade edge 111 of the thin blade body 11 is moved outward by the reaction force or static friction force received from the binding object. As long as it can be prevented from spreading, the shape is not limited to a semicircular shape, and may be a shape that fits each other, such as a circular shape, an elliptical shape, a semielliptical shape, a square, a rectangle, or a triangle.

  Further, in the tongue piece cutter 1 of the first embodiment, the spacer body 12 is provided with the first protrusion 121a at the spacer tip 121, the second protrusion 123b, and the third at the spacer base 123. However, the present invention is not limited to this, and both the second convex portion 123b and the third convex portion 123c may be omitted, and further, the second convex portion 123c may be omitted. Of course, either the part 123b or the third convex part 123c may be omitted.

Embodiment 2. FIG.
Next, as a second embodiment of the present invention, an example of a binding device 2 using the tongue piece cutter 1 according to the first embodiment will be described.

  FIGS. 5A and 5B are a front perspective view and a rear perspective view, respectively, showing an example of the appearance of the binding device 2 according to the present invention using the tongue piece cutter 1 of the first embodiment.

  As shown in FIGS. 5A and 5B, the binding device 2 according to the present invention includes a lever portion 20, an upper pressing portion 30, a lower pressing portion 40, and a pedestal portion 50. In addition, although the tongue piece cutter 1 of Embodiment 1 is provided on the base main body 51 as shown in the following FIG. 6, in FIG. 5, it hides in the lower side press part 40 and does not appear.

  FIG. 6 is an exploded perspective view of an example of the binding device 2 according to the second embodiment shown in FIG.

  In FIG. 6, the binding device 2 according to the second embodiment shown in FIG. 5 first includes a resin-made lever cover 21 and a metal-made lever main body 22, and a lever cover 21 and a lever main body 22. Pin 23, upper presser 30 for pressing a binding object such as a document from above, spring 31, lower presser 40 for pressing the binding target from below, a pedestal main body 51 constituting pedestal 50, and A pedestal cover 52 with a bearing portion and a rotation shaft 53 are provided.

  Furthermore, in the binding device 2 according to the second embodiment, a pair of tongue cutters 1 according to the first embodiment including the thin blade main body 11 and the spacer main body 12 on the pedestal main body 51 in the lower pressing portion 40. The tongue piece cutter 1 fitted to the pin 13 for pivotally attaching the tongue piece cutter 1 to the pedestal main body 51 and the spring convex portion 123d (see FIGS. 1 to 3) of the spacer body 12 and rotated. A spring 14 for returning to a state before rotation, a slit cutter 15 for forming a slit for inserting a tongue piece, and a spring 16 for raising and lowering the lowered lower presser 40 and the like. Have. Of course, two slit cutters 15 may be provided independently, like the tongue cutter 1 of the binding device.

  When the binding device 2 according to the second embodiment is assembled, the pin 23 is passed through the pin hole 22a of the lever main body 22 and the pin hole 30a of the upper presser 30 to attach the upper presser 30 to the lever 20. On the other hand, the rotation shaft 53 passes through the shaft hole 52 a of the pedestal cover 52 with a bearing portion and the shaft hole 22 b of the lever main body 22 to attach the lever portion 20 to the pedestal portion 50.

  The operation of the binding device 2 according to the second embodiment is almost the same as that of the above-described Patent Documents 2 and 3, but will be described briefly.

  That is, when a document or the like to be bound is inserted between the upper presser 30 and the lower presser 40 and the lever part 20 is pressed down, the cutter through hole 40a ( 6), the tongue piece cutter 1 of the present embodiment is raised to form a tongue piece on the document or the like, and the slit cutter 15 is also raised to form a slit on the document or the like.

  Further, when the lever portion 20 is pushed down, the tongue piece cutter 1 of the binding device is rotated, and the formed tongue piece is inserted into the opening 15 a (see FIG. 6) of the slit cutter 15.

  Then, when the depressed lever portion 20 is returned, the raised and rotated tongue piece cutter 1 returns, and the raised slit cutter 15 returns with the tongue piece portion sandwiched between the opening portions 15a, and the tongue piece cutter 1 is formed. The tongue piece is passed through the slit formed by the slit cutter 15 to bind a document or the like.

  Therefore, according to the binding device 2 according to the second embodiment, the tongue piece cutter 1 according to the first embodiment is used to cut a binding object such as a document without using a metal needle. By forming a piece and a slit and passing the tongue piece through the slit, a document or the like can be bound without using a metal needle.

  In the binding device 2 according to the second embodiment, two tongue piece cutters 1 are provided. However, this is merely an example, and in the present invention, even one tongue piece cutter 1 or three or more tongue piece cutters 1 are provided. Of course, it may be provided. Further, in the second embodiment, the binding device 2 is opposed to the two tongue cutters 1 at an angle, and is arranged in a so-called C-shape, but this is also an example, and in the present invention, Of course, the tongue piece cutters 1 of a plurality of binding devices may be arranged in a straight line or in parallel.

  According to the tongue piece cutter and the binding device of the binding device according to the present invention, since the cut end of the tongue piece is stabilized without incurring the manufacturing cost, the binding object such as a document is bound without using a metal needle. It is industrially applicable as a tongue cutter and binding device for eco-friendly and eco-friendly binding devices, especially in the food industry where metal needles cannot be used, and bound documents are discarded as they are with a shredder The industrial applicability is large in the field to do.

DESCRIPTION OF SYMBOLS 1 Tongue cutter 11 Thin blade main body 111 Thin blade front-end | tip part 111a Blade part 111b Recessed part 112 Thin-plate blade trunk | drum 113 Thin-plate blade base 113a Shaft hole 12 Spacer main body 121 Spacer front part 121a 1st convex part 122 Spacer trunk 123 Spacer base 123a Shaft hole 123b 2nd convex part 123c 3rd convex part 15 Slit cutter 2 Binding device 20 Lever part 30 Upper pressing part 40 Lower pressing part 50 Base part

Claims (5)

A tongue piece cutter of a binding device for binding a binding object by cutting a binding object to form a tongue piece, and passing the formed tongue piece through a slit formed by a slit cutter,
A thin plate blade body having a thin plate blade tip portion formed with a blade portion for forming the tongue piece at the thin plate tip;
A spacer main body inserted inside the thin blade main body,
On the opposite side of the blade portion at the tip of the thin plate blade, a recess recessed in the direction of the blade portion is formed,
The tongue piece cutter of a binding apparatus in which the 1st convex part which fits into the said recessed part is formed in the location in the said spacer main body corresponded to the said recessed part. In the tongue piece cutter of the binding device according to claim 1,
The tongue piece cutter of the binding device, wherein the concave portion and the first convex portion have a substantially semicircular shape. In the tongue piece cutter of the binding device according to claim 1 or 2,
In front of the base of the spacer body,
A tongue cutter of a binding device, wherein the tongue protrudes forward from the base of the thin blade main body, is thicker than the spacer main body, and is formed with a second convex portion that supports the base of the thin blade main body from the front. In the tongue piece cutter of the binding device according to any one of claims 1 to 3,
Behind the base of the spacer body,
A tongue cutter of a binding device, wherein a third convex portion that protrudes rearward from the base portion of the thin blade main body and is thicker than the spacer main body and supports the base portion of the thin blade main body from the rear is formed. A tongue cutter of the binding device according to any one of claims 1 to 4,
A slit cutter that forms a slit through which the tongue formed by the tongue cutter of the binding device passes;
A tongue piece is formed on the binding object by the tongue cutter of the binding device and bent, and the binding object is bound by passing through a slit formed by the slit cutter.
A binding device characterized by that.

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