JPH1120366A - Binding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fabricate a binding apparatus that can positively remove a binding member from a forming fulcrum after its formation into a ring-shape and binding operation of binding paper. SOLUTION: The binding apparatus includes a driver plate 7 for hitting out the straight part of a binding member 3 toward the sides of leg parts 3b, forming guide slits 4, and a fulcrum member 8 for holding the leg parts 3b of the hit out binding member 3, and is fabricated such that after hitting out the binding member 3, the leg parts 3b are permitted to penetrate through the punching holes of binding paper while the leg parts 3b are shaped into rings by the fulcrum member 8 and forming guide slits 4. In this instance, the fulcrum member 8 can be moved to the position where a forming fulcrum is made at the hitting out operation of the binding member 3 by the driver plate 7 and withdrawal position where the binding member 3 can be taken out therefrom.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binding device for binding a binding sheet by forming a ring shape by passing a leg of a binding member through a punch hole formed in the binding sheet.

[0002]

2. Description of the Related Art As a means for binding binding paper, such as when binding a plurality of copied papers and submitting them to a meeting or presentation, stapling is generally used. There is a drawback that the spread part is difficult to see. Means for bonding the end faces of the binding sheets to each other with hot melt are also known. However, there is a problem that it is time-consuming to fix with a hot melt since the adhesive must be cooled after heating. Further, using a binding member in which a plurality of U-shaped pieces are projected at right angles at a fixed interval from the straight portion, punch holes are formed along the edges of the binding paper, and the binding members are respectively formed in these punch holes. A device is also known in which a U-shaped piece is penetrated and then the U-shaped piece is bent into a ring shape and bound. However, since a large number of U-shaped pieces are provided on one binding member, the binding member itself is large and expensive, and when performing many binding operations at once, the number of binding members increases. In addition to the space required, the U-shaped pieces are liable to be entangled with each other.

As shown in FIG. 10 (a), a forming fulcrum 21 is provided near one end of a curved surface guide 20 having a circular cross section as shown in FIG. In addition, a binding device that pushes the binding member 22 between the forming fulcrum 21 and the end of the curved surface guide 20 has been considered. According to this device, when the U-shaped binding member 22 is vertically pushed down between the forming fulcrum 21 and the end of the curved surface guide 20, the needle-shaped material does not bend until the tip of the needle-shaped material hits the curved surface guide 20,
When further depressed, the tip of the binding member 22 is guided to bend along the curved surface guide 20 as shown by the arrow, so that the binding member 22 bends from beyond the portion engaged from the molding fulcrum 21. The portion beyond the fulcrum 21 is bent one after another. For this reason,
The binding member 22 is formed in a ring shape as shown in FIG. In this manner, the straight binding member 22 can be formed in a ring shape by the forming fulcrum 21 and the curved surface guide 20. If the binding member material 22 is made to penetrate the punched holes 24 formed in the edge portion of the superimposed binding paper 23 in the period from when it is stamped to when it is formed into a ring shape, the binding paper 23 can be bound. it can.

[0004]

However, if the binding member 22 is formed in a ring shape, it cannot be pulled out from the molding fulcrum 21 because the molding fulcrum 21 is inside the ring portion.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a binding device capable of forming a binding member into a ring shape and binding the binding paper to be surely removed from a forming fulcrum after binding.

[0006]

In order to solve the above-mentioned problems, a binding device according to the present invention comprises a binding member formed with legs parallel to a right angle from a straight portion, and a straight portion of the binding member on a leg side. A driver plate that is driven toward the base, a curved forming guide groove formed corresponding to the leg portion, and a bind provided inside the vicinity of one end of the forming guide groove and driven toward one end of the forming guide groove. A fulcrum member that forms a forming fulcrum for engaging the side surface of the leg of the member and bending the leg is formed, and the leg is formed by the fulcrum member and the forming guide groove after the binding member is punched out. A binding device in which the leg is penetrated through a punch hole formed in an edge portion of a binding sheet before being formed into a ring shape, wherein the fulcrum member is a driver plate A position constituting the molded fulcrum when operating launch bind member, characterized by being movable in a retracted position where it can take out the binding member.

[0007] The fulcrum member is formed so as to have an opening formed in the fulcrum member so as to be guided by the forming guide groove so as to be bent into a ring shape and not to hit the tip of the bent leg portion. Is preferred.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 indicates a plurality of binding sheets to be bound. Two sets of punch holes 2 are punched in the edge of the binding sheet 1 by a punch (not shown). Reference numeral 3 denotes a binding member. The binding member 3 is a pair of legs 3 parallel from both ends of the straight portion 3a.
b is a metal member which is connected so as to form a U-shape, and is usually formed as a connection binding member by bonding a plurality of members.

FIG. 2A is a perspective view of a binding device.
FIG. 1B shows a cross-sectional view of the same. This binding device bends the binding member 3 into a ring shape.
A molding table 5 having a pair of molding guide grooves 4, a face plate 6 provided on the upper part of the molding table 5, a driver plate 7 movably arranged along the back surface of the face plate 6, and a driver plate 7 And a fulcrum member 8 forming a forming fulcrum for bending and forming the leg 3b of the binding member 3 punched out by the above. A supply passage 9 for the connecting binding member 3 is formed behind the face plate 6,
The connection binding member 3 in the supply passage 9 is constantly pressed toward the rear side (front) of the face plate 6 by pressing means (not shown), and the leading binding member 3 is disposed below the driver plate 7.

The molding table 5 has a substantially J-shaped cross section, and the pair of molding guide grooves 4 are formed in parallel on the inner surface curved and formed in an arc shape (not necessarily a semicircle). ing. The groove bottom of the forming guide groove 4 is curved in an arc shape. The upper end of the forming guide groove 4 is disposed so as to be on the extension of the leg 3 b of the binding member 3 at the head of the supply passage 9.

The face plate 6 is fixed, and sliding guide grooves (not shown) for the binding member 3 and the driver plate 7 are formed on the back surface thereof in the vertical direction.

The fulcrum member 8 is a support shaft 1 of the face plate 6.
A pair of plate-like members 8a are attached to the shafts 0, and projecting fulcrum portions 11 protrude from the opposing surfaces of the plate-like members 8a to face each other. A relief portion 12 of the leg portion of the binding member is formed so as not to hit the distal end portion of the leg portion bent and bent in a ring shape. The fulcrum member 8 is at a position (closed position) where the fulcrum portion 11 forms a forming fulcrum when the driver plate 7 launches and operates the binding member 3.
When the driver plate 7 returns to the home position (top dead center position), the retracted position (open position) from which the binding member 3 can be taken out is rotated.

Next, the use of the binding device having the above-described structure will be described. When the driver plate 7 is operated downward along the back surface of the face plate 6 as shown in FIG. 3, the straight portion 3a of the binding member 3 is pushed out.
Moves in the direction of its extension. Therefore, as shown in FIG. 2B, the tip of the fulcrum member 11 of the fulcrum member 8 in a closed state is formed after the tip of the fulcrum member contacts the bottom of the molding guide groove 4 of the molding table 5 (which forms the molding fulcrum). ), The leg 3b penetrates the punched hole 2 of the binding paper 1 while being guided and bent so as to be bent along the curved surface of the forming guide groove 4 using this as a forming fulcrum. As shown in FIG. 4, the distal end portion of the bent leg portion 3 b further passes through the relief portion 12 of the fulcrum member 8, hits the base portions of the leg portions 3 b at both ends of the binding member 3 and stops, forming a ring shape. It is formed. After reaching the bottom dead center, the driver plate 7 operates upward and returns to the home position. At this time, as shown in FIG. 5, the plate-shaped member 8a opens and moves to the left and right to retreat from the front of the binding member 3, so that the binding member 3 can be taken out from the molding table 5.

As shown by the dotted lines in FIGS. 3 (a) and 3 (b), the binding paper 1 has the punch holes 2 at the edges thereof and the leg portions 3 of the binding member 3.
What is necessary is just to set b to an appropriate position on the locus which is formed in a ring shape. Normally, the punch hole 2 is formed before the leg 3b is driven out of the driver plate 7 and moves downward to hit the forming guide groove 4, or around the position where the leg 3b is formed into a semicircular shape beyond the forming table 5. It is good to set so that it penetrates. Thereby, the binding paper 1 is bound by the two binding members 3 as shown in FIG.

As described above, according to the above-mentioned binding device, the pair of legs 3b of the U-shaped binding member 3 are formed in a ring shape, but when the driver plate returns to the home position, the binding member 3 Since the binding member 3 is moved to the retreat position where it can be taken out, the binding member 3 is formed into a ring shape, and after the binding paper 1 is bound, the binding member 3 can be reliably removed from the molding fulcrum.

The tip and the base of the ring portion formed by the leg 3b are continuous in a circular shape. Since the leading end and the base of the leg 3b do not overlap inside and outside, when the bound sheet 1 is opened, the bound sheet 1 is caught by the leading end of the ring portion and cannot be opened or damaged well. Without
The pages of the binding sheet 1 can be turned smoothly.

Further, since the fulcrum member 8 is retracted from the binding member 3 after the leg 3b is formed in a ring shape, the formed binding member 3 can be smoothly taken out together with the binding paper 1.

The fulcrum member 8 is provided horizontally as shown in FIG. 7, and the driver plate 7 returns to the home position and the position constituting the forming fulcrum when the binding member 3 is driven out. Sometimes, the configuration may be such that the binding member 3 can be moved in the left-right direction to the retracted position where the binding member 3 can be taken out.

Further, the fulcrum member 8 is not limited to a plate-shaped member. As shown in FIG. 8, it is formed in a pin shape,
A configuration in which the fulcrum member 8 is retracted from the binding member 3 after molding while allowing movement in the axial direction may be employed.

In addition, the shape of the binding member 3 is not limited to a linear cross section. For example, a band-shaped material may be used. In addition, it is not limited to one having two legs. It may have three or more legs. Further, the binding device may be of a type in which a straight binding member is formed into a U-shape having two legs in the device, and is then punched out.

Similarly, although the cross section of the forming guide groove 4 is shown as a semicircular arc, the present invention is not limited to this. For example, it may be formed in an arc such as a quarter circle or a quarter circle.

Next, instead of forming the forming guide groove 4 in an arc shape, as shown in FIG. 9 (a), the forming guide groove 4 is formed at the axis of the leg of the binding member 3 punched out by the driver plate. It may be formed in an inclined straight line so as to form an obtuse angle. In this case, the leg 3b of the binding member 3 is punched out into the driver plate, and the portion where the tip hits the forming guide groove 4 is inclined linearly. Therefore, the tip is positioned with respect to the axis of the leg 3b. It is guided suddenly in the direction of a right angle and moves. For this reason, the leg 3b is bent at a sharp angle from the portion engaged with the fulcrum 11, and the bent portion 14 hits the forming guide groove 4, and the upper portion is similarly bent. In this way, the leg 3b is
Is bent in accordance with the inclination angle of the ring, and a polygonal ring portion can be obtained as shown in FIG.

[Brief description of the drawings]

FIG. 1 is a perspective view of a binding sheet 1 and a binding member.

2 (a) and 2 (b) are a perspective view and a longitudinal sectional view, respectively, of a binding device according to the present invention.

FIGS. 3 (a) and 3 (b) are explanatory diagrams of the operation mode of the binding device, respectively.

FIG. 4 is a perspective view showing a state in which the binding member is formed into a ring shape.

FIG. 5 is a perspective view showing a state where the fulcrum member is opened.

FIG. 6 is a completed view of a binding state.

FIG. 7 is an explanatory view of an operation mode of another example of the fulcrum member.

FIG. 8 is an explanatory view of an operation mode of still another example of the fulcrum member.

FIGS. 9 (a) and 9 (b) are other structural examples of a forming guide groove and explanatory views of a forming mode thereof.

10 (a) and 10 (b) are explanatory views of a molding mode using a conventional binding member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Binding paper 2 Punch hole 3 Bind member 3a Straight part 3b Leg part 4 Forming guide groove 7 Driver plate 8 Supporting member 12 Escape part

Claims (2)

[Claims] 1. A binding member having legs formed at right angles from a straight portion, a driver plate for driving the straight portion of the binding member toward the legs, and a curved plate formed corresponding to the legs. Forming a groove formed in the vicinity of one end of the forming guide groove and engaging the side surface of the leg of the binding member which is provided toward one end of the forming guide groove and bends the leg. A fulcrum member forming a fulcrum, and formed on the edge of the bound paper after the binding member is punched out and before its leg is formed in a ring shape by the fulcrum member and the forming guide groove. A binding device having the leg portion penetrated through a punched hole, wherein the fulcrum member is formed at a position constituting a forming fulcrum when the driver plate performs a punching operation of the binding member; Characterized by being movable in a retracted position where it can take out the de member. 2. The relief member according to claim 1, wherein the fulcrum member is formed with a relief portion which is guided by the molding guide groove and is bent in a ring shape so as not to hit the tip of the bent leg portion. Binding device.