JP2018024145A - Bending device for paper-made stitch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bending device capable of seemly bending all legs of a stitch penetrating through paper sheets as well as adhering them.SOLUTION: A bending device for a paper-made stitch comprises: a pair of operation blocks arranged below respective two unbent legs of a paper-made stitch penetrating through paper sheets, and movable to bend the two legs toward respective facing sides; a guide part for restrictively guiding the respective two legs formed on respective upper surfaces of the pair of operation blocks an operation mechanism provided connectedly with the pair of operation blocks for causing the two legs to be bent; and a heat source for heating the two legs guided by the operation blocks, to cause them to be heat-adhered to each other.SELECTED DRAWING: Figure 1

Description

The present invention relates to a non-metallic stitch, specifically, a non-metallic stitch formed by twisting a paper such as Japanese paper, Japanese paper-like paper, or synthetic Japanese paper (hereinafter simply referred to as a paper stitch). .)) When binding a plurality of sheets such as a book or a calendar, the legs of the paper stitch penetrating the sheet are folded and the folded legs are bonded to each other, or the bent legs are bonded to the sheet The present invention relates to a bending apparatus.
In this specification, the term "paper stitch" refers to a non-metallic stitch formed of paper, plastic, or a composite thereof, and the stitch includes a staple needle or a stapler staple. It is used as.

  Regarding the technique of binding a plurality of sheets by paper stitching, the inventions proposed by Patent Documents 1 to 3 have already been patented, and the mass production model based on the inventions of Patent Documents 1 to 3 has already been patented by the present applicant. Practical use is planned.

  By the way, in the paper binding apparatus using paper stitches, the engineers are concerned that the two legs of the paper stitches that penetrate the paper are folded and the legs of the paper stitches that are bent are bonded to each other. Or, a bent leg is adhered to the back surface of the paper.

  A technique of bending two legs of paper stitches penetrating the paper and bonding the bent legs together, or fixing the bent legs to the back surface of the paper by bonding or the like (hereinafter simply referred to as a bending technique). ) Is conceptually disclosed in Patent Documents 1 to 3 above. In addition, although the adhesive agent is used in the aspect impregnated to the said leg, the usage aspect of an adhesive agent is not restricted to an impregnation system, For example, the application | coating system may be used. By the way, even if the leg bending technique is designed and prototyped as a folding mechanism that folds paper stitches and performs bonding, for example, it is quite easy to fold the paper stitch legs and get the legs fixed and fixed. It turned out that it was not possible.

  The reason is that paper stitches are less rigid than wire stitches, so they are easily deformed, and when deformed paper stitches are subjected to the action of a folding mechanism made of metal, the legs bend into abnormal shapes. As a result, it was impossible to bond the paper stitch leg after folding it into a neat shape.

Japanese Patent No. 4465495 Japanese Patent No. 4642937 WO2013 / 168190A1 publication

Accordingly, the present invention provides two legs of paper stitches that can be bent and adhered to the leg of the paper stitches that have penetrated the paper in the final process of the paper binding process by the paper stitches. It is completed as a subject to provide a bending apparatus. The bending apparatus of the present invention is means for bending and bonding the two legs.

  The structure of the folding device of the present invention made for the purpose of solving the above problem is that a pair of operations on the left and right arranged below the left and right two legs of the paper stitch that penetrates the sheet are not bent yet. A pair of left and right bending operation blocks (hereinafter simply referred to as operation blocks) for bending the two legs so that the tip ends of both legs face each other and approach each other, and upper surfaces of the pair of operation blocks, respectively A guide portion that restrains and guides the tip ends of the two legs formed on the two legs, and the pair of operation blocks that are bent to the tip sides of the two legs. An operating mechanism as a driving source of the operating block, and a heat source for heating the two legs bent to the operating block for bonding are provided.

The pair of left and right operation blocks serving as the bending device has a shape in which the pair of operation blocks face each other at the positions corresponding to the uncurved front ends of the two legs penetrating the paper. Position and arrange with.
Each of the pair of left and right operation blocks has an action portion including a fulcrum, a force point, and an action point formed in a substantially lever-like shape that is located in the vicinity of the approximate apex of an approximately inverted triangle. Arranged symmetrically.

  In the above-described bending apparatus of the present invention, the guide portion is a groove-like recess formed on the upper surface of each of the pair of left and right operation blocks. The groove-shaped recess may be a groove having a constant width or width and depth, but has a tapered width that narrows toward the tip, or an inclined depth that becomes deeper or shallower toward the tip. It may be a groove-like recess. Furthermore, the starting end portion of the groove-shaped recess may be formed so as to be connected to the starting end portion of the groove-shaped recess at a surface continuous with the flat upper surface on the second half side of the pair of operation blocks.

In this invention, it can replace with the guide part by the said groove-shaped recessed part, and can use the alternative guide part provided with the following structure.
That is, when the alternative guide portion is viewed from the side of the pair of left and right operation blocks, the upper surface of each of the operation blocks is formed on a slope that intersects in the thickness direction, while the pair of operation blocks A pair of front and rear support blocks fixed in a substantially abutting manner are arranged on the front surface of one operation block and the rear surface of the other operation block, respectively, and the one set of support faces the two inclined surfaces. A substantially V-shaped section formed by each standing wall surface of the block and each of the inclined surfaces can be used as a guide section instead of the groove-shaped recess.

  The present invention is a pair of left and right operation blocks disposed under the two left and right legs of the paper stitch that are not yet bent, and a folding device for folding and bonding the legs of the paper stitch, A pair of left and right operation blocks that bend the two legs so that the distal ends of both legs face each other and approach each other, and the distal ends of the two legs respectively formed on the upper surfaces of the pair of operation blocks A guide portion that guides each of the two legs in a restrictive manner, an operation mechanism that is connected to the pair of operation blocks that bends to the distal ends of the two legs, and the 2 that is bent into the pair of operation blocks. Since the leg of the book is formed with a heat source for heating for bonding, it is possible to bond the front end side of the leg of the paper stitch penetrating the sheet into a neat shape before bonding.

The front view of the principal part of this invention bending apparatus. FIG. 2 is a stroke diagram showing the relationship between the movement of a pair of left and right operation blocks in FIG. 1 and the degree of bending of the left and right legs of a paper stitch, (a) is the start of operation of the operation block and the bent shape of the two legs; ) Is an intermediate view of the operation block and the bent shape of the two legs, and (c) is a front view showing the operation block of the operation block and the bent shape of the two legs. The top view which extracted and represented only a pair of right and left action | operation blocks in the bending apparatus of FIG. FIG. 4 is a front view of a single working block on the right side of FIG. The left view of the action | operation block single-piece | unit of FIG. The partial expansion surface of the left side surface of the action | operation block of FIG. The typical partial enlarged view which looked at the principal part of the alternative guide part formed in a pair of action block from the side.

Next, an embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, 1 and 2 are positioned by partially overlapping the front end sides of the left and right (two) leg portions L1 and L2 of the paper stitch Sp that penetrates the bound paper P (see FIG. 3). ) And a pair of bending operation blocks (hereinafter simply referred to as operation blocks) on the left and right sides of the first half facing each other arranged in a downwardly inclined posture.

In FIG. 1, the operation blocks 1 and 2 are generally T-shaped or inverted triangle-shaped when viewed from the front, with the upper outer end portions as fulcrums 1a and 2a, respectively, and lower end portions extending downward. Are the force points 1b and 2b, and the inner ends facing each other at the upper positions are formed as action portions 1c and 2c including action points.

In the operation blocks 1 and 2, the fulcrums 1a and 2a are pivotally attached to a fixing member Fm constituting a binding device (not shown in the drawing) by a shaft such as a pin. 2a is also pivotable at pivot points 1a and 2a). In the figure, the centers of holes or shafts drawn in a circle are the fulcrums 1a and 2a and the force points 1b and 2b.

  The force points 1b and 2b at the substantially central lower ends of the operation blocks 1 and 2 are connected to the upper ends of the substantially arm-shaped connecting members 3 and 4 via shafts, and the lower ends of the connecting members 3 and 4 are connected to each other. However, it is connected to one elevating member 5a having a substantially Y shape in FIG. 1 by connecting shafts 3a and 4a. The lower part of the elevating member 5a is connected to the elevating actuator 5 such as a cylinder or a feed screw, and the elevating operation of the elevating actuator 5 is transmitted to the power points 1b and 2b via the connecting members 3 and 4, thereby The operating blocks 1 and 2 are caused to perform angular rotation about the fulcrums 1a and 2a. The connecting members 3 and 4, the elevating member 5 a, and the elevating actuator 5 form an example of an operating mechanism for the pair of operating blocks 1 and 2. In FIG. 1, the ascending operation of the elevating actuator is indicated by a solid line, and the descending operation is indicated by a dotted line.

Due to the angular rotation movement of the pair of operation blocks 1 and 2, the action portions 1c and 2c of the pair of operation blocks 1 and 2 move upward (or downward) by the angular rotation movement in an opposed posture.

Depending on the functions and functions of the points 1a, 1b, 2a, and 2b, the connecting members 3 and 4, the elevating member 5a, and the elevating actuator 5 in the pair of operating blocks 1 and 2, the operating portion 1c of the operating blocks 1 and 2, Two leg L1 and L2 of the paper stitch Sp that hangs down toward the upper surface of 2c are not bent yet from FIG. 2 (a) by the angular rotation that lifts up the action portions 1c and 2c of the operation blocks 1 and 2. While the posture is changed to FIG. 2 (b) and from FIG. 2 (b) to FIG. 2 (c), they are bent inward (opposite sides), respectively. Note that the paper stitch Sp penetrating the paper P is subjected to a pressing force by the pressing punch PP schematically shown in FIG. The pressing punch PP is a reaction force receiver of the bending force by the pair of operation blocks 1 and 2 acting on the two legs L1 and L2.

  By the way, the two legs L1 and L2 are water-drawn objects having a substantially round cross-section by twisting Japanese paper or the like, and are in contact with the upper surfaces of the action portions 1c and 2c of the operation blocks 1 and 2. When pushed upward, the legs L1 and L2 may slide back from the upper surfaces of the action portions 1c and 2c due to the twisting of the legs L1 and L2.

  When at least one of the two legs L1 and L2 slides down from the upper surface of the action part 1c or 2c of the operation block 1 or 2, the leg L1 or L2 that has slipped is bent through the action parts 1c and 2c. Power does not work. Then, the two legs L1 and L2 penetrating the paper P cannot be aligned and bent in the paper stitch Sp, and the two bent legs L1 and L2 can be bonded to each other, or the bent legs L1 and L2 can be bonded together. There has been a problem that L2 cannot be adhered to the back surface of the paper P.

Therefore, in the present invention, the action portions 1c and 2c set on the pair of operation blocks 1 and 2 are provided with legs L1 and L2 that the action portions 1c and 2c push up for bending, respectively. The form which does not slide down from the upper surface of the blocks 1 and 2 was given. This point will be described with reference to FIGS.

  3 to 6, the operation block 1 (or 2, the operation block 2 is arranged in a substantially symmetrical form with respect to the overlapping portion of the operation block 1 and the action portions 1c and 2c. ), The upper surface in front of the portion substantially corresponding to the force point 1b when viewed from the fulcrum 1a is defined as an action portion 1c, and the action portion 1c has a groove-like shape appearing as a solid line in FIGS. A concave portion was provided as a guide portion 6 for bending the leg L1 (or L2) (the guide portion 7 in the operation block 2).

  In addition, in FIG. 3 showing the figure seen from the plane of a pair of action | operation blocks 1 and 2, 1d and 2d are taper seeing from the plane formed in the front-end | tip part of said pair of action | operation blocks 1 and 2 arrange | positioned facing each other. It is the slope for duplication of both the operation blocks 1 and 2 which looks like a shape (refer also FIG. 4, FIG. 5). In FIG. 3, the operation blocks 1 and 2 are shown as having the same size, but the two operation blocks 1 and 2 may be slightly different in size.

If groove-shaped recesses are provided on the upper surfaces of the action portions 1c and 2c of the pair of operation blocks 1 and 2 as the guide portions 6 and 7 for bending the legs L1 and L2, the upper surfaces of the operation blocks 1 and 2 are raised. The contacting legs L1 and L2 fit into the groove-like recesses of the guide portions 6 and 7, and the sliding behavior of the legs L1 and L2 on the upper surfaces of the action portions 1c and 2c is caused by the groove-like recesses (guide portions 6 and 7). Supported in a restraint manner. This restrictive support eliminates the sliding of the tip ends of the two legs L1 and L2 from the upper surfaces of the action portions 1c and 2c of the operation blocks 1 and 2, and as shown in FIGS. 2 (a) to 2 (c). Can be folded.

As described above, the pair of operation blocks 1 and 2 that bend the front ends of the two legs L1 and L2 facing each other at an angle of approximately 90 degrees are the ends of the bent two legs L1 and L2. In order to thermally bond the two, the pair of operation blocks 1 and 2 itself may have, for example, a heat generating action due to Joule heat.

Even when the bent two legs L1 and L2 are thermally bonded to the back surface of the paper P bounded by the paper stitch Sp, if the pair of operation blocks 1 and 2 themselves have heat generation capability, as in the above, Good. In the present invention, an external heat source that conducts heat to the pair of operation blocks 1 and 2 may be disposed in the vicinity of the operation blocks 1 and 2 to bond the bent two legs 1L and 2L.

In the present invention, the heat necessary for the thermal bonding of the bent legs L1 and L2 is not due to the heat generation action of the operation blocks 1 and 2 itself, but the metal outside the operation blocks 1 and 2 is provided with a heat generation function. The legs L1 and L2 which are covered with a heat generating cover and bent with heat supplied from the heat generating cover side may be thermally bonded.

In the present invention, in order to bend the front ends of the legs L1 and L2 of the paper stitch Sp penetrating the paper P, the guide portions 6 and 7 are connected to the action portions 1c of the operation blocks 1 and 2 in the above-described embodiment. Although described with the example formed in the upper surface of 2c by the groove-shaped recessed part, the guide parts 6 and 7 in this invention bending apparatus can also be made into the form of the guide part shown with the typical side view in FIG.

  That is, in FIG. 7, when the pair of left and right operating blocks 1, 2 arranged facing each other is viewed from the side, the upper surfaces (working surfaces 1c, 2c) of the respective blocks 1, 2 cross each other when viewed from the side. While forming the symmetrical slopes 1e and 2e, the guide standing walls 8 and 9 by the vertical surfaces fixed in position are closely adjacent or loosely brought into contact with the lower end portions of the downward slopes of the both slopes 1e and 2e. Are arranged so that the one inclined surface 1e and the vertical inner surface 8a of the guide standing wall 8 form, and the other inclined surface 2e and the substantially inner surface 9a of the guide standing wall 9 form a substantially V-shaped portion. It becomes an alternative guide part which plays the same role as the guide parts 6 and 7 by the groove-shaped recessed part in a previous Example.

The two legs L1 and L2 bent neatly by the action of the guide parts 6 and 7 (or the alternative guide part in FIG. 7) are adhered to each other or adhered to the back surface of the paper P. Therefore, the following configuration can be adopted in the present invention.

As an example, when the legs L1 and L2 of the paper stitch Sp with the water-drawn twist are preliminarily impregnated with a hot-melt adhesive, the pair of operation blocks 1 and 2 are continuously bent. Or, in parallel with the bending operation, Joule heat is generated, and the two legs L1 and L2 bent with Joule heat generated in the pair of operation blocks 1 and 2 as a heat source are heated and impregnated with paper stitches. The adhesive can be melted and adhered between the legs, or adhered to the back surface of the paper P. Incidentally, in order to bond the legs, the groove-shaped guide portions 6 and 7 in the pair of operation blocks 1 and 2 are adjacent to each other in close proximity to bring the legs into contact with each other. It is a requirement that the legs L1 and L2 bent in a substantially horizontal posture can be brought into contact (contact) with the back surface of the paper P.
In the present invention, since the bent legs L1 and L2 are pressed against the back surface of the paper P from below, a leg lifting member (not shown) may be installed and used.

The present invention is as described above, and the legs L1 and L2 of the paper stitch Sp penetrating the paper P can be bent neatly, and the legs of the two legs bent neatly are bonded or folded. Since the two legs can be adhered beautifully to the back side of the paper, it can greatly contribute to the spread of bookbinding using paper stitches Sp.

Sp: Paper stitch PP: Pressing punches L1, L2: Legs 1 and 2 of paper stitches penetrating the paper: Operation blocks 1a and 2a for bending the legs L1 and L2: Support points 1b and 2b of the operation block Block force points 1c, 2c: Action surface of action block (action point)
3, 4: Connecting member 5: Elevating actuator 5a: Elevating member 6, 7: Guide portion by groove-shaped recess

Claims (7)

  A pair of left and right operating blocks disposed below (front end side) of the left and right legs of the paper stitches that have not yet been bent through the paper, wherein the two legs are respectively connected to the front ends of both legs. A pair of left and right operation blocks that are bent so as to approach each other, a guide portion that restrains and guides the distal ends of the two legs respectively formed on the upper surfaces of the pair of operation blocks, An actuating mechanism that is connected to the pair of actuating blocks that are bent at the distal ends of the two legs and the two legs that are bent to the actuating blocks are bonded to each other. A paper stitch folding apparatus comprising: a heat source for heating.   2. The paper stitch according to claim 1, wherein the pair of actuating blocks are arranged so that the front ends of the pair of actuating blocks face each other at positions corresponding to two legs penetrating the sheet. Bending device.   Each of the pair of operation blocks is formed in a lever-like form in which an action part including a fulcrum, a force point, and an action point is substantially at the top of an inverted triangle, and is arranged so as to be substantially symmetric with respect to the action part when viewed from the front. The paper stitch folding apparatus according to claim 1 or 2, wherein:   The paper stitch folding apparatus according to any one of claims 1 to 3, wherein the guide portion is a groove-like recess formed on the upper surface of each of the pair of operation blocks.   The alternative guide portion, which replaces the groove-shaped recess of the guide portion, forms the upper surfaces of the pair of operation blocks on inclined surfaces that intersect each other in the thickness direction of the operation block, while the front surface and the rear surface of the pair of operation blocks. A pair of support blocks substantially in contact with each other is arranged, and the substantially V-shaped section formed by the inclined wall and the inclined wall of the pair of support blocks facing the inclined surface is used as an alternative guide portion for the groove-shaped recess. The paper stitch folding apparatus according to claim 4.   The heat source that heats the two bent legs is the pair of operating blocks that generate heat, and the two legs are bonded to each other by the heat generation, or the back surface of the paper through which the legs penetrated. The folding device for paper stitches according to any one of claims 1 to 5, wherein the folding device is used. The two folded legs are heated so that the two legs are bonded to each other or to the back side of the paper through which the two legs penetrate, so that the pair of operation blocks are externally attached. The paper stitch folding apparatus according to any one of claims 1 to 5, wherein heat is applied.

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