JP2732975B2 - Opening method and opening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeding method in a printing apparatus such as a copying machine which uses a large amount of paper and a paper feeding apparatus for the same.

[0002]

2. Description of the Related Art Conventionally, in a printing apparatus such as a copying machine or the like, when a large number of sheets are to be printed, it is necessary to frequently supply sheets to a sheet feeding cassette, which takes time. Therefore, a large-capacity cassette capable of storing and feeding a large amount of paper, for example, about 1500 sheets has been devised.

In such a large-capacity cassette, a paper feed tray on which paper is placed is provided, and an elevator mechanism for moving up and down the paper feed tray is provided. When the uppermost portion is taken out by a pickup roller or the like at the takeout port, the above-mentioned sheet feeding table is raised by the elevator mechanism so that the uppermost sheet is at a predetermined position.

[0004]

However, in the large-capacity cassette, a predetermined number of sheets to be stored are wrapped, and the sheets are taken out from the wrapper and are sequentially placed in a predetermined position and direction on the paper feed table. Since the papers are arranged in a line, it takes time to store the paper.

[0005]

According to a first aspect of the present invention, there is provided an opening method for stacking sheets of paper to solve the above problems.
The stacked sheet bundle is formed by a paper-like body such as paper in one direction of the paper-like body.
By gluing them together on the stack of paper
Make a cylindrical shape, and open both ends of this cylindrical part
Fold it down, and finally glue the bottom part on the stack of paper
The package is a package that has been packaged by
A open method of exposing the paper Te, you in the package
To the side of the package that is stacked below the cylindrical part
The entire lower end of the side that is different from the folded side
Forming a first incision in the package, and
The lower end of the first incision side of both folding side surfaces
A step of making a second incision by incision, and a tubular portion of the package body
Peeling off the glued portion of the part forming
Has the side of the package that is stacked below the cylindrical part of the package
Is separated from the package body and enclosed
Exposing a part of the paper.
ing.

According to a second aspect of the present invention, there is provided an opening method in which a stack of sheets is wrapped in a substantially rectangular parallelepiped shape by a paper-like material such as paper, and is packaged by gluing. Moving means for nipping the both ends in the longitudinal direction of the package placed on the sheet feeding table and reciprocating the package,
A mounting table on which the package moved by the moving means is placed, first cutting means for cutting a lower end of a longitudinal side surface of the package moved on the mounting table, and both longitudinal end faces of the package; And a pair of second incising means for incising while pressing the lower part of the package in the mutual direction, and vertically above the mounting table so as to peel off the glued part which is superimposed and glued in the longitudinal direction of the central part of the package. use a release pawl which moves horizontally and
The surface of the package with the glued portion is on the top, and the surface of the package stacked on the lower side of the glued portion is in the direction of the mounting table, with respect to the moving direction of the package to the mounting table. After placing the package on the paper feed table so that the glued portions are substantially perpendicular to each other, the package is placed on the mounting table in a horizontal direction substantially perpendicular to the longitudinal direction of the package with the first cutting means. The package is moved until it abuts, and the lower end of the longitudinal side surface of the package is horizontally incised to form a first incision, while the first incisions at both longitudinal end surfaces of the package are formed. Side
After cutting off the lower end portion of each of the above, a second incision portion is formed by each of the second incision means, and the glued portion is peeled off by a peeling claw to form a peeling portion. By returning upward, the package portion having the package surface superposed below the glued portion of the package is separated, and a part of the packaged paper is exposed.

[0007] The method unsealing according to claim 3 of the present invention, in order to solve the above problems, in the opening process of claim 2, further comprising a substantially inverted V-shaped edge as the first incision means
After cutting the package by inserting the cutting edge near one end in the longitudinal direction at the lower end of the side surface in the longitudinal direction, the first cutting means is moved horizontally to move the lower end to the one end. The first incision is formed by moving the first incision means horizontally and incising to the other end in the longitudinal direction at the lower end of the longitudinal side surface.

[0008] The method unsealing according to claim 4 of the present invention, in order to solve the above problems, in the opening process of claim 2, wherein, as the separation claw, provided with a single-edged shaped portion at its distal end
After pressing the single-edged portion against the surface of the package body and inserting it into the non-glued portion adjacent to the glued portion while facing the glued portion, the peeling claw is moved horizontally. The peeled portion is formed by peeling the glued portion.

According to a fifth aspect of the present invention, there is provided an opening method according to the second aspect , wherein the conveying means for vertically moving the sheet feeding table is provided.
Further using a second detection means for detecting the position of the package ,
A plurality of packages are placed on the paper feed table, the opened packages are moved upward by the transporting means, and are placed below the packages based on a signal from the second detecting means. By moving the package on the mounting table by the moving means,
The method is characterized in that the package is opened.

According to a sixth aspect of the present invention, in order to solve the above-mentioned problems, a package in which a stack of sheets is wrapped in a substantially rectangular parallelepiped shape by a paper-like material such as paper and wrapped by gluing. a dissected opening device for exposing the sheet to, and sandwiched in the longitudinal direction both end faces of the placed packaging the feeding table over, a moving means for reciprocally moving the package,
A mounting table on which the package moved by the moving means is mounted.
When, the longitudinal direction of the package moved onto the mounting table moves horizontally, to form a first incision and the incision in the horizontal direction by inserting the lower end of the longitudinal sides of the package that the cutting edge 1
Cutting means, and the first cuts at both longitudinal end surfaces of the package.
A second incision means for incising the lower end of the side where the opening portion is formed, as by peeling off the gluing unit which is glued superposed longitudinal center portion of the package to form a release portion A peeling claw that moves up and down above the mounting table and moves horizontally is provided.

[0011] opening device according to claim 7 of the present invention, in order to solve the above problems, the opening device according to claim 6, wherein a conveying means for moving the feed table in the vertical direction,
A sheet feeding means for taking out the paper exposed in the package, a first detecting means for detecting the sheet feeding completion of the package, the package of the used based on the signal from the first detection means It is characterized in that the discharge means for discharging in a direction different from the take-out direction of the sheets is provided.

According to an eighth aspect of the present invention, there is provided an opening device according to the sixth aspect , wherein the first incising means, the second incising means, the peeling claw, and the mounting table are provided. The case is provided in the case, an opening is provided in the case so that the package can be moved between the sheet feeding table and the mounting table, and the package is moved between the sheet feeding table and the mounting table by the moving means. It is characterized in that a partition plate that opens and closes the opening with movement is provided.

According to a ninth aspect of the present invention, there is provided an unsealing apparatus according to the sixth aspect of the present invention .
There are cutting edges of the first incision means is a generally inverted V-shape,
Through an elastic member such that the cutting edge is rotatable in the vertical direction is characterized by being attached to the first incision means.

According to a tenth aspect of the present invention, there is provided an opening device according to the sixth aspect.
Oite, the cutting edge of the first incision means, a generally inverted V-shape der
Ri, thinning guide portion of the thickness toward the edge is characterized by being provided along the above cutting edge in the first incision means.

[0015] In order to solve the above problems, the opening device according to the eleventh aspect of the present invention provides the opening device according to the sixth aspect.
Here, it is characterized in that there is provided a pressing moving means for moving each of the second incising means so as to press the lower portions of both ends in the longitudinal direction of the package in the mutual directions.

According to a twelfth aspect of the present invention, in order to solve the above-described problems, a sheet bundle in which sheets are stacked is wrapped in a substantially rectangular parallelepiped shape by a paper-like material such as paper, and wrapped by gluing. An opening device for separating an opening package portion, which is a part of the package, to expose the sheet, wherein both ends in the longitudinal direction of the package placed on a paper feed table are clamped, moving means for reciprocating the mounting table package moved by the moving means is mounted, horizontally moved in the longitudinal direction of the package moved onto the mounting table, length of the package and the edge A first incising means which is inserted into a lower end portion of the directional side surface to incision in the horizontal direction to form a first incision portion, and the first incision portions at both longitudinal end surfaces of the package are formed.
A pair of second incision means for incising the lower end of that side, above the central portion of the mounting so as to longitudinally stacked is peeled off gluing unit which is glued to form a peeling section table of the package And a peeling claw that moves up and down in the horizontal direction is provided, and the mounting table is rotatably provided so that the opening package unit on the mounting table can be discharged downward. It is characterized by having.

[0017]

According to the method of the first aspect, the above-mentioned first method is used .
1 incision, 2nd incision, and peeling part, the package
By forming, the above-mentioned package body part from the above-mentioned package body
It is possible to separate the paper in the package
Because it can be exposed, for example,
If applied to a paper cassette, the package is
It can be automated to open and open the paper
Then, as usual, the package is opened by hand and the sheet bundle is opened.
The labor of aligning and placing the paper on the paper feed table can be saved.

According to the second aspect of the present invention, the package body is positioned such that the surface of the package body having the glued portion is on the upper side and the package surface of the package body stacked below the glued portion is in the mounting table direction. Towards
By placing the glued portion on the paper feed table so as to be substantially perpendicular to the moving direction of the package to the mounting table, and moving the package on the mounting table, the first cutting means Each of the second incising means and the peeling claw can be arranged at a position where the first incising section, each of the second incising sections and the peeling section can be formed.

Therefore, by forming the first incision, the second incision connected to the first incision, and the peeling portion in the package, the package is separated from the package. And the paper in the package can be exposed.

According to the method of the third aspect , in addition to the function of the second aspect , the first incision means can be used.
From Rukoto used, equipped with a substantially inverted V-shaped cutting edge Te, the leading end of the first incision means can be inserted between the sheets of the package, also, substantially horizontally along the first incision means between the paper The first incision can be formed by reciprocating in the direction.

Therefore, for example, when the first incision means is inserted from the longitudinal end face of the package and the lower part of the longitudinal side face of the package is incised to form the first incision, the cutting edge of the first incision means is formed. However, if the sheet is inserted slightly obliquely between the sheets of the package due to a dimensional error or bending of the package, the rate of defective sheets that damages the sheet increases, but in the above method, the first incising means is reciprocated. Even if the cutting edge is inserted slightly obliquely between the sheets and reciprocates due to dimensional errors or bending of the package, the first incision means pushes and opens the sheets. It is possible to reduce damage to the paper when forming the portion.

According to the method of the above claim 4, in addition to the operation of the invention described in claim 2, as the separation claw, used, equipped with a single-edged shaped portion at its distal end, the single-edged shaped part Is inserted into the non-glued portion adjacent to the glued portion while pressing the surface of the package so as to face the glued portion. When the peeling claw peels off the glued part, the one-blade part inserted in the non-glue part pushes open the overlapping part, peels off the glued part and peels off. Since the portion is formed, the accuracy of forming the peeled portion can be improved.

According to the method of the above claim 5, claim 2 in addition to the effect of the invention described, package placed on the lower side of the package on the basis of a signal from the second detecting means Can be moved onto the mounting table by the moving means, and the package can be opened.When the use of the paper in the opened package is completed, the package is loaded under the package and the package and already opened. Can be replaced quickly.

According to the configuration of the sixth aspect , the package body is placed so that the surface provided with the glued portion is on the upper side and the package body surface which is overlapped below the glued portion is in the mounting table direction. Towards
By mounting on the paper feed table so that the glued portion is substantially perpendicular to the direction of movement of the package to the mounting table,
A position where the first incision means, each of the second incision means and the peeling claw can be formed in the first incision part, each of the second incision parts and the peeling part by moving the package on the mounting table by the movement means. Can be placed in

Therefore, the first incision, the second incision connected to the first incision, and the peeling portion are formed in the package, so that a part of the package can be part of the package. And the paper in the package can be exposed.

According to the structure of the seventh aspect , in addition to the effect of the sixth aspect , the sheet is taken out from the package having the sheet exposed as described above by the paper feeding means. When the detecting means detects the completion of feeding of the package, the discharge means is provided so as to discharge the sheet in a direction different from the direction in which the sheet is taken out, so that the package can be discharged. In addition, since a plurality of packages can be placed on the sheet feeding table, the packages stacked below the package can be moved and opened by the transporting means.

According to the configuration of the eighth aspect , in addition to the function of the invention of the sixth aspect, the partition plate for opening and closing the opening is provided. From the first incision means or the second incision means to avoid injury to the hand.

According to the ninth aspect of the present invention, in addition to the function of the sixth aspect, the first cutting means is provided via an elastic member so that the cutting edge can be vertically rotated. When the blade is inserted between the papers, it is rotated vertically by the pressing force, making it easy to insert the blade between the papers. Can be reduced.

According to the configuration of the tenth aspect , in addition to the effect of the invention of the sixth aspect, the guide portion whose thickness decreases toward the cutting edge is formed along the cutting edge by the first cutting means. Therefore, when the blade edge is inserted between the sheets, the leading end of the guide section is also inserted between the sheets, and the gap between the sheets is pushed open. Therefore, contact between the sheet and the blade can be avoided, or the contact pressure between them can be reduced, and damage to the sheet due to the blade during horizontal movement of the blade can be reduced.

According to the structure of the eleventh aspect, in addition to the operation of the invention of the sixth aspect, each of the second parts is pressed so as to press the lower portions of both ends in the longitudinal direction of the package in the mutual directions. Since the pressing and moving means for moving the incision means are provided, the second incision means appropriately abuts against both end surfaces in the longitudinal direction of the package body, and the incision thereof can be ensured.

In addition, the set distance of each of the second incising means at the standby position is set to be larger than the length of the package, and after moving the package by the moving means, each of the second incising means is moved. By doing so, each of the second incising means can cope with a dimensional error of the package and the like, and the accuracy of the incision at both longitudinal end surfaces of the package can be increased.

According to the structure of the twelfth aspect of the present invention, the package body is placed so that the surface provided with the glued portion is on the upper side and the package body surface which is overlapped below the glued portion is in the mounting table direction. By moving the package on the table by the moving means, the package is placed on the sheet supply table so that the glued portion is substantially perpendicular to the moving direction of the package to the table. By doing so, the first incision means, each of the second incision means and the peeling claw can be arranged at a position where the first incision, each of the second incision and the peeling part can be formed.

Therefore, by forming the first incision, the second incisions connected to the first incision, and the peeling portion in the package, the opening which is a part of the package is formed. The package body can be separated from the package, and the paper in the package can be exposed.

Further, in the above configuration, since the mounting table is rotatably provided so as to discharge the opening package on the mounting table downward, for example, the opening package is Even if it does not separate from the second incision means,
Such an occlusion can be released, and the opening package can be reliably discharged.

[0035]

FIG. 1 to FIG. 40 show an embodiment of the present invention.
This will be described below. As shown in FIG. 1, the opening device according to the present embodiment uses a prescribed sheet, for example, A
A predetermined number of sheets, for example, 500 sheets are bundled and stacked in a rectangular parallelepiped shape to form a sheet bundle 1a, and the sheet bundle 1a is automatically opened by cutting and separating a predetermined position of the package 1 wrapped by the wrapping paper 1b. Used to do.

A method of packaging such a package 1 will now be described. When packaging a sheet bundle 1a in which 500 sheets of predetermined sheets, for example, A4 sheets (length 297 mm, width 210 mm) are bundled, first, Wrapping paper 1b for wrapping the paper bundle 1a
Is formed into a rectangle whose length is about 2.7 times the width of the paper and whose wrapping paper 1b is about 1.5 times the width of the paper.

At a substantially central portion of the wrapping paper 1b, a sheet bundle 1a
Is placed with its longitudinal direction aligned with the widthwise direction of the wrapping paper 1b, and then both ends of the wrapping paper 1b in the longitudinal direction are folded so as to be alternately overlapped on the sheet bundle 1a, and thus laid. The both ends are glued together along their longitudinal direction to form and fix a longitudinal glued portion (glue portion) 1c. At this time, in the wrapping paper 1b on which such a longitudinal gluing portion 1c is formed, an overlapping upper wrapping paper 1d and an overlapping lower wrapping paper 1e are formed.

[0038] Then, first longitudinal ends each tubular portion of the wrapping paper 1b formed on the side end portions of the inner towards the folding each, the next, lower side of the upper portion of the cylindrical portion of the sheet bundle 1a to see write fold respectively, finally <br/> packaging paper 1 f from the lower end side of the substantially mountain-shaped respectively extending in the longitudinal direction of the sheet of wrapping paper 1b upward bending Rutotomoni, formation of the longitudinal glued portions 1c Overlapped upper wrapping paper 1d and overlapped lower wrapping paper 1
The wrapping paper piece 1f protruding upward from the surface e is bent, and the contact surface between the wrapping paper piece 1f and the overlapping upper wrapping paper 1d is glued along the shorter direction of the sheet bundle 1a to form a short-side gluing portion 1g. Are formed and fixed, and the package 1 is completed.

The size of the package 1 can be changed according to the main number of sheets 1a to be packed, and the material of the wrapping paper 1b in the package 1 is not particularly limited. Is used, and wrapping paper 1
One side of the wrapping paper 1b may be coated with a synthetic resin in order to reduce the frictional resistance between the paper b and the paper.

Next, an opening device for automatically opening the above-mentioned package 1 will be described. As shown in FIG. 4, such an opening device has a large capacity in a copying machine or the like, that is, more sheets 3 than the number of sheets wrapped in the package 1.
The paper cassette 2 is applied to the paper cassette 2 that can store the paper, and is attached to the side of the body (case) 4 of a copying machine or the like.
It is installed in the main body 4 close to.

The main body 4 is provided with a pickup roller (sheet feeding means) 5 for sequentially taking out the sheets 3 at the highest position in the sheet bundle 1a stored in the sheet feeding cassette 2 one by one from above. The paper 3 (not shown) conveyed from the pickup roller 5 is further
Feed roller 6 for transporting to a transfer unit (not shown)
Is installed.

The paper feed cassette 2 is provided with a paper feed table 7 on which the substantially rectangular parallelepiped package 1 in which the paper 3... Are packed is stacked in the vertical direction.
As shown in FIG. 5 , an elevator mechanism (transporting means) 8 is provided for raising and lowering the paper feed table 7. Such an elevator mechanism 8 is constituted by a motor 8a, a worm gear 8b attached to a rotating shaft thereof, a gear 8c meshing therewith, and a wire 8d which moves according to the rotation of the gear 8c. Wire 8
The paper feed table 7 attached to d moves up and down. In order to control the above-mentioned elevator mechanism 8, a paper feed tray position detecting means of the paper feed tray 7 and a position detecting means of the package 1 are provided, although not shown.

Further, as shown in FIG.
A collection stopper (first detecting means) 9 for pressing a sheet-feeding package 21 described later during sheet feeding is provided above the sheet-feeding package 21, and the collection stopper 9 is further provided with the sheet-feeding package 2
When the sheet 3 in 1 is consumed retrieved all, since the driving force of the pickup roller 5 to the package 1 is applied in the direction A, as shown in FIG. 6, it acts in such packaging 1 It also has a function of detecting the completed driving force and detecting the completion of feeding of the package 1.

On the other hand, as shown in FIG. 4, the sheet feed cassette 2
An opening loader (moving means) 10 for horizontally reciprocating the package 1 at a predetermined position in the loaded packages 1... With an opening table (mounting table) 11 described later.
As shown in FIG. 7 , the opening loader 10 has a pair of substantially L-shaped clamping members 10a provided opposite to each other so as to be fitted to both rear corners of the package 1. Are provided.

The unsealing loader 10 includes the motors 10b, the worm gears 10c provided on the rotating shafts thereof, the gears 10d meshing with the motors 10b, the male screw member 10e rotating with the gear 10d, and the male screw member A female screw member 10f meshed with 10e and provided in the holding member 10a is provided.

Thus, each of the holding members 10a and 10
a is close to each other at right angles to the moving direction of the package 1,
Alternatively, the opening loader 10 can hold the rear end portion of the package 1 and can be moved in the horizontal direction so as to be separated from each other. The package 1 is clamped by the clamping members 10a, and the opening table 11 and the sheet feeding table 7 are held.
It is possible to reciprocate between above.

As shown in FIG. 4, a substantially rectangular opening 4a through which the package 1 moved by the unsealing loader 10 can enter and exit is formed in the side of the main body 4.
The partition cover (partition plate) 12 that opens and closes the opening 4a
Is rotatably attached to the upper end of the opening 4a.
A predetermined position of the package 1 in the body 4 corresponding to
In addition, an opening 13 for peeling a predetermined portion of the package 1 is provided.

On the other hand, such a partition cover 12 has
As shown in FIG. 8, a lock mechanism 12a is provided, and an operator or the like inadvertently enters his hands into the opening portion 13 shown in FIG.
Injuries to the hands and the like due to 5 and the side cutters 16 are avoided.

The opening section 13 is provided with the above-mentioned flat opening table 11 which extends horizontally in the vicinity of the lower end of the opening 4a and on which the package 1 inserted for a predetermined distance can be placed. The table 11 has an opening 4a from the center.
Away from the position, that is, the side cutter (second
At the position on the side of the cutting means 16 and the cutter (first cutting means) 15, a horizontal rotating shaft 11 a perpendicular to the insertion direction is provided.
As shown in FIG. 9, it is rotatable by driving means (not shown).

The opening table 11 has substantially cylindrical stopper pins 11 on both sides in the insertion direction on the opening 4a side.
b are erected respectively, and although not shown,
A lock mechanism interlocking with the opening loader 10 is provided, and when the package 1 moves on the opening table 11, the opening table 11 is locked to reduce the load applied to the rotating shaft 11a. .

Also, above the opening table 11, FIG.
As shown in the figure, the peeling claw 14 for peeling the longitudinal gluing portion 1c is provided with a peeling claw tip portion (single-blade portion) 1.
4a is installed so as to extend in the direction of the opening 4a and to be rotatable in the vertical direction. The tip portion 14a is formed into a single-blade shape that becomes thinner toward the tip as shown in FIG. As a result, it can be inserted between the overlapping portions of the overlapping upper wrapping paper 1d and the overlapping lower wrapping paper 1e in the package 1.

The peeling claw 14 is slidably mounted on a cylindrical guide bar 14b extending in the horizontal direction via a peeling claw supporting portion 14c.
Is fixed to a driving wire 14d extending in the horizontal direction together with the guide bar 14b, and the peeling claw 14 moves with the movement of the driving wire 14d driven by driving means (not shown).

A guide roller 14e extending in a direction opposite to the tip 14a of the peeling claw is provided on the peeling nail support 14c.
The peeling claw 14 to be moved is moved up and down at a predetermined position by the guide roller 14e and the not-shown uneven contact portion.

On the other hand, as shown in FIGS. 4 and 11, the opening portion 13 faces the opening table 11 in the horizontal position.
In order to form a front cutout (first cutout) 17 by cutting open the lower part of one longitudinal side surface 1h of the inserted package body 1 placed toward the opening 4a as shown in FIG. 4 and FIG. 11, the above-described cutter 15 is mounted so as to be movable in the left and right directions, that is, in the horizontal direction which is the longitudinal direction of the package 1.

In the cutter 15, the cutter blade 15a is formed in a substantially inverted V-shape as shown in FIG. 13, and the blade 15a extends slightly inward from the blade 15a.
Paper guide portion 15b having an inclined portion that becomes thinner toward
Are provided in the same shape as the cutter blade 15a. Thereby, as described later, damage to the respective sheets 3 by the cutter blade edge 15a inserted into the sheet bundle 1a is avoided. Such a cutter 15 has a cylindrical shape extending in the horizontal direction along the longitudinal direction of the package 1. Is slidably mounted on a guide bar 15c having a cylindrical inner surface by a cutter support 15d having a cylindrical inner surface. The cutter support 15d extends from the slide with the guide bar 15c in the direction of the package 1 and hangs. A support plate 15g is provided, and a cutting edge 15a is provided so as to extend horizontally from a tip end thereof.

The cutter support 15d is attached to a drive belt 15f which reciprocates in a horizontal direction by drive means (not shown) via an elastic member 15e such as a leaf spring, so that the cutter 15 can move left and right. ,
When a pressing force is applied to the cutter blade tip 15a, the cutter blade tip 15a rotates substantially vertically about the axis of the guide bar 15c.

As shown in FIG. 4, the unsealing portion 13 is provided with a pair of side cutters 16 for cutting the both end surfaces 1i, 1i in the longitudinal direction of the package 1, respectively. The cutters 16 are slidably reciprocated on cylindrical guide shafts 16a extending from both lower sides of the opening 4a in parallel to both ends of the opening table 11.

As shown in FIG.
As shown in FIG. 4 and FIG. 15, a worm gear 16b is provided in the vertical direction, and the worm gear 16b is driven by a motor 16f via gears 16g and 16h and a torque limiter 16i, and further meshed with the worm gear 16b. Gear 16c is provided, so that the side blade 16d attached to the rotating shaft of the gear 16c has a side cutter blade tip 1 which is a tip end thereof.
6e is rotatable up and down along both longitudinal end surfaces 1i of the package 1.

On the other hand, in the side cutter 16, the gear 16c and the side blade 16d are connected to the worm gear 16b.
Is mounted on a side blade holder (pressing and moving means) 16j rotatable about the rotation axis of the package 1, and when the worm gear 16b is driven, the side blade holder 16j rotates and comes into contact with the package 1 Both ends 1 in the longitudinal direction
i.1i can be pressed in the mutual direction by the side blades 16d. The rotation range of the side blade holder 16j is restricted by providing a holder stopper 16n that contacts the side blade holder 16j.

However, since the driving force is transmitted to the worm gear 16b via the torque limiter 16i, it is possible to prevent the pressing force exceeding the set value of the torque limiter 16i from acting on the package 1.

In addition, the side cutter 16 includes the gear 1
6 h of rotational driving force, and a moving gear 16 k meshing therewith
The side cutter racks 16m for reciprocating the side cutters 16 are provided along the respective guide shafts 16a, so that the side cutters 16 are disposed at both ends 1i in the longitudinal direction of the package 1.・ They can reciprocate along 1i.

In the opening device of the above embodiment, each of the opening loader 10, the opening table 11, and the peeling claw 1 shown in FIG.
4. Detecting means (not shown) for detecting the positions of the cutter 15 and the side cutter 16 are provided, respectively, and each of the opening loaders 1 according to a preset program based on a signal from the detecting means.
0, control means (not shown) such as a microcomputer for controlling the opening table 11, the peeling claw 14, the cutter 15, and the side cutter 16 are provided.

Next, an opening method using the configuration of the above embodiment will be described. First, as shown in FIG.
A substantially rectangular parallelepiped package 1 in which a predetermined number of, for example, 500 sheet bundles 1a are stored and packaged is placed on the top of the package 1 with the surface provided with the longitudinal gluing portion 1c, and
The overlapping lower wrapping paper 1e stacked below the longitudinal gluing portion 1c is moved in the direction of the opening table 11 and the end of the overlapping lower wrapping paper 1e with respect to the moving direction of the package 1 to the opening table 11. A plurality of the packages 1 are placed on the paper feed table 7 so that the sides are substantially at right angles. here,
The longitudinal side face of the package 1 facing the opening 13 is called the front face, and the opposite side face is called the rear face.

After that, as shown in FIG. 4, the placed package 1 can be inserted into the predetermined position, that is, the opening 4a by the elevator mechanism 8 shown in FIG.
To a movable position. Subsequently, the rear surfaces of both ends 1i in the longitudinal direction of the package 1 are sandwiched by the opening loader 10, while the partition cover 12 covering the opening 4a so as not to hinder the movement of the package 1.
Is unlocked.

After that, the package 1 is moved from the sheet supply table 7 to the opening table 11 through the opening 4a and brought into contact with the cutting edge 15a of the cutter 15, and then the cutting edge 15a
Is moved by the opening loader 10 in the insertion direction A until a predetermined amount is inserted into the lower part of the longitudinal side surface.

At this time, the cutter blade tip 15a is
As shown also in FIG.
The lower part of the longitudinal side surface 1h, and slightly inward from one end surface 1i of the longitudinal end surfaces of the package 1,
By first setting the first cutout portion 17a at such a position, it is possible to efficiently cut the smooth package 1 in which the damage of the paper 3 in the package 1 is avoided as described later.

By the way, as shown in FIG. 17, when the cutter 15 is mounted via the rigid member 19,
Since the rotation of the cutter blade 15a is almost suppressed, the cutter blade 15a may hit the sheet bundle 1a in the inserted package 1 and damage the sheet 3 in the sheet bundle 1a.

However, in the structure of the above embodiment, as shown in FIG. 18, the cutter blade 15a can be rotated in the vertical direction by the pressing force by the elastic member 15e.
When the cutter blade 15a rotates slightly downward when cutting the package 1, the cutter blade 15a rotates upward due to the reaction rotated downward when the cutter blade 15a pierces the package 1 and comes into contact with the sheet bundle 1a. Since the cutter blade edge 15a is inserted, the cutter blade edge 15a can easily enter between the stacked sheets 3...
a is avoided.

Next, the operation of the peeling claw 14 will be described.
As shown in FIG. 19, the tip 14a of the peeling claw 14 overlaps and moves away from above the lower wrapping paper 1e as shown in FIG.
Overlap and contact the lower wrapping paper 1e.

Subsequently, the non-glued portion 1j formed adjacent to the side of the longitudinal glued portion 1c between the overlapping upper wrapping paper 1d and the overlapping lower wrapping paper 1e while pressing the surface of the overlapping lower wrapping paper 1e. Then, the blade of the peeling claw tip portion 14a is inserted in a state facing the longitudinal gluing portion 1c, and a standby state is established. Since the peeling claw tip 14a overlaps and is inserted while pressing the lower wrapping paper 1e surface in this way, the peeling claw tip 14a is securely inserted into the non-glued portion 1j.

On the other hand, as shown in FIG.
When approaching in the direction to point a in the figure, each side cutter 1
6.16 starts. After that, each side cutter 16
16 are the same, so that one side cutter 1
6, the side cutter 16 started as described above is driven by a motor 16f as shown in FIG.
However, when the gear rotates counterclockwise as indicated by the arrow in the figure, the gears 16g, 16h, and 16k rotate accordingly.

Accordingly, the side cutter 16 is moved by the rack 16m in the direction B approaching the package 1, and the side blade holder 16j is rotated clockwise about the rotation axis of the worm gear 16b. . As a result, the blade base portion of the side blade 16d is
Abuts against and presses against the longitudinal end portion 1i, and the rotation of the side blade holder 16j stops.

After that, when the motor 16f is further driven in the same manner, the side cutter 16 moves in the direction B, and the side blade 16d rotates downward to start incising the longitudinal end 1i at a predetermined position. Since the side cutter 16 moves in the direction B and makes an incision while the blade 16d rotates downward, the incision has an inclined shape that curves inward.

Subsequently, when the side cutter 16 is driven, the wrapping paper surface 1 at the longitudinal end 1i shown in FIG.
For i ₁ a side blade 16d between the packaging paper 1i ₂ is sandwiched therebetween enters the rotation of the side blade 16d is suppressed, the packaging paper 1 to the side blade 16d substantially horizontal linear
cutting the lower part of i _1.

In this way, while the package 1 reaches the point A in the drawing, the longitudinal ends 1i, 1i of the package 1 are pressed in the mutual direction by the side blades 16d, 16d while the longitudinal ends 1i, 1i are pressed. As shown in FIGS. 21 and 1, an incision required area C is cut from a predetermined position of the package 1 to almost reach the longitudinal side surface 1 h on the front side of the package 1, as shown in FIGS. 21 and 1.

In this way, both end surfaces 1i.
Side incisions (second incisions) 18 are respectively formed in the lower portion of 1i, and further, as shown in FIG. 15, each side cutter 16, 16 connects the longitudinal end faces 1i, 1i to each other at the incision completion position. It is held while pressed in the direction.

The side cutout 18 does not need to reach the longitudinal side 1h on the front side of the package 1, and when the longitudinal side 1h is cut by the cutter 15 as described later, the cutter blade tip 15a Is the longitudinal end faces 1i
-Since it reaches 1i, the front incision 17 and the side incision 18 by the cutter blade 15a are connected.

In addition, since the longitudinal side surface 1h side of the side cutout portion 18 has an inclined shape that is convexly curved inward as described above, the side cutout portion 18 due to bending of the package 1 or dimensional error or the like. Even if the incision start position is slightly different, the front incision portion 17 and the side incision portion 18 are reliably connected due to the inclined shape.

The rotation axis of the worm gear 16b of the side cutter 16, the cutting edge of the side blade 16d, and the incision position of both longitudinal end faces 1i of the package 1 are appropriately set by the package 1, the side blade 16d and the like. You.

Each of the side cutters 16 is provided with the torque limiter 16i, and the torque limiter 16i has a structure in which the driving force is not transmitted internally when a predetermined load or more is applied, for example, a driving force. The transmission of the driving force is prevented from occurring because the pair of clutch plates that transmit the force are slipped. Thereby, each side cutter 16 can press the package 1 with a predetermined force in the mutual direction, and even if the rotation of the side blade holder 16j and the side blade 16d is suppressed, The cutter 16 can move.

When the distance between the side blades 16d and 16d is smaller than the length of the package 1 when the package 1 moves from the point A to the point A shown in FIG.
6d pierces the package 1 and may damage the package 1. However, in the configuration of the above embodiment, the side cutter 16 rotates the side blade 16d to remove the package 1. Since it has a width adjusting function for pressing, the distance between the side blades 16d at the standby position is set in advance.
The length of the package 1 to be inserted can be set to be larger than the length in the longitudinal direction, the side blade 16d can prevent the package 1 from being damaged, and can also deal with dimensional errors, bending, and the like of the package 1. I have.

If a paper size detecting means or the like is provided in the opening loader 10 or the like, various paper sizes can be used.
Automatic opening is possible, at which time each side cutter 1
The installation width of 6.16 needs to be changed according to the paper size. Therefore, by using such an installation width setting means, a width adjusting means similar to the above may be configured.

Subsequently, the peeling claw 14 in the standby state shown in FIG.
Is moved in the horizontal direction so as to peel off the longitudinal gluing portion 1c as shown in FIG. 22, and as shown in FIG.
When reaching the peeling completion position, FIGS.
As shown in FIG. 24, the peeling claw 14 rises and separates from the overlapping lower wrapping paper 1e of the package 1, and as shown in FIG.
The peeling claw 14 returns to its standby position.

Thereafter, the cutter 15 in the stand-by state shown in FIG. 16 has an inverted substantially V-shaped double edge as shown in FIG. 13, and the cutter 15 is cut horizontally in the left and right directions. Since it is possible, as shown in FIG. 25, the cutter 15 is horizontally moved toward the one of the adjacent longitudinal end faces 1i, and the lower part of the longitudinal side face 1h of the package 1 is cut to the end face 1i. As a result, a second cutout portion 17b is formed. At this time, the cutter blade tip 15a also makes an incision on the front side of the longitudinal end face 1i, and connects the side incision 18 on the longitudinal end face 1i with the second incision 17b.

Then, as shown in FIG. 26, the lower end of the longitudinal side surface 1h of the package 1 is connected to the longitudinal end surface 1h.
The third incision 17c is formed by making a horizontal incision until reaching the other longitudinal end face 1i facing i. At this time, the cutter blade tip 15a also cuts the front side of the longitudinal end face 1i to connect the side cutout 18 at the longitudinal end face 1i to the third cutout 17c.

At the time of such horizontal movement of the cutter blade tip 15a, since the cutter 15 is provided with the paper guide portion 15b, the paper guide portion 15b is inserted between the papers 3 as shown in FIG. Each of the papers 3 is pushed open, and the blade 15 can be moved even when the cutter 15 moves horizontally.
a and each of the papers 3 is avoided, or the contact pressure between them is reduced, so that the papers 3 sandwiching the cutter blade 15a are prevented from being damaged.

It is conceivable that the cutter blade 15a is formed to be thick to have the function of the paper guide portion 15b as described above. However, the manufacturing cost of such a cutter blade 15a is increased, and the cutter blade 15a is formed. There is a possibility that the cutting ability of the stencil is reduced, which is not desirable.

Further, the cutter blade tip 15a is made of the elastic member 1
5e to the drive belt 15f,
Even when the sheet bundle 1a has a bend or the like, the cutter blade edge 15a pivots up and down in accordance with the shape of the sheet bundle 1a to more smoothly prevent the cutter blade edge 15a from being caught by the sheet 3. Thus, the cutter 15 can be moved horizontally, so that the paper 3 in such a horizontal movement can be moved.
Damage is also avoided.

[0089] By this way the first Phase I and II, third period <br/> incisions 17a-17b-17c are formed, as shown in FIG. 1, the front side of the packaging 1 The front incision 17 is formed over the entire lower surface of the longitudinal side surface 1h, and the front incision 17 and the side incisions 18
And are connected. As a result, the opening package unit 20 provided with the overlapping lower packaging paper 1e as shown in FIG. 3 can be separated from the package 1, and as shown in FIG. 2, the front surface of the sheet bundle 1a is exposed. Paper-feeding package 2 described above
1 can be obtained.

The most efficient way of forming the front notch 17 as described above is to make an incision by one-way horizontal movement of the cutter blade 15a. However, in such a cutting method, the package is formed by the cutter blade 15a. 1 is likely to be entangled, and the possibility of damaging the paper 3 is increased. In addition, when the cutter blade 15a is inserted into the package 1 at an angle to the paper 3, The potential for damage was even higher.

However, according to the configuration and method of the above embodiment, the tip of the cutter blade 15a rotatable in the up-down direction is inserted while exploring between the sheets 3, so that the above-described damage is avoided, and When the cutter blade 15a is inserted between the sheets 3, the sheet guide 15b
The contact between the cutter blade tip 15a, which reciprocates in the horizontal direction, and the paper 3 is substantially avoided, and even if it does, the cutter blade tip 15a contacts not the blade edge of the cutter blade edge 15a but the side of the blade. Is prevented.

Thereafter, as shown in FIG. 4, after moving each side cutter 16 to the standby position, the opening loader 1 is opened.
0, the package 1 is moved back onto the paper feed table 7, and at this time, the leading end of the partition cover 12 is opened.
Is pressed, the opening package portion 20 is locked and remains on the opening table 11.

At this time, as shown in FIG. 28, there is a case where the side blade 16d is engaged with the opening package body portion 20 and cannot be separated, but as shown in FIG. 29, the opening table 11 is rotated. As a result, the edge of the opening table 11 and the side blade 16d come into contact with each other, and the distance between the contact position and the rotating shaft 11a of the opening table 11 is changed to the side blade 16d.
The rotating shaft 11a is set so as to be larger than the distance between the locked position of the opening and the opening package unit 20 and the rotating shaft 11a.

For this reason, with the rotation of the opening table 11, the locking between the side blade 16d and the opening package 20 is released, and such an opening package 20 is opened. Is stored in a collection hopper 22 provided below the hopper. The setting position of the rotating shaft 11a is such that the space above the opening table 11 is small, the space of the collection hopper 22 below the opening table 11 is large, and the end of the rotating opening table 11 In order to bring the side and the side blades 16d into contact with each other, the side blade 1
On the 6d side, it is set so as to be substantially parallel to the above-mentioned end side.

Next, as shown in FIG.
Close and lock 2. Then, the sheet feeding table 7 is lifted by the elevator mechanism 8, and the opened sheet feeding package 21 is opened.
A predetermined position at which the sheet can be taken out by the pickup roller 5 is detected by a detecting means (not shown), and the ascent of the sheet supply table 7 is stopped at that position.

Simultaneously with the stop of the ascent, the collection stopper 9 presses the package 1 so as to suppress the movement of the package 1 when the pickup roller 5 takes out the sheet 3 as described later. Next, the sheet 3 is taken out from the sheet-feeding package 21 one by one from above using the well-known technique by the pickup roller 5 and is conveyed and fed to the feed roller 6. The feed roller 6 conveys the paper 3 to an electrophotographic processing unit or the like which is a printing process of the main body 2 of a copying machine or the like.

As is well known, the elevator mechanism 8
The height of the paper feed tray 7 is corrected according to the paper feed amount of the paper 3, and the paper feed tray 7 is set such that the pickup roller 5 can always feed the paper 3. When all the paper 3 in the topmost paper feed package 21 is fed in this way, the driving force of the pickup roller 5 causes all the paper 3 to be taken out and becomes empty and used. Paper-feeding package 21
And the driving force is transmitted to the collection stopper 9, so that when the collection stopper 9 detects the driving force,
The operation of the pickup roller 5 is stopped as the sheet feeding is completed.

Then, as shown in FIG. 30, the sheet feeding table 7 is lowered by the elevator mechanism 8 until the sheet feeding table 7 reaches the horizontal position with respect to the opening table 11, and is stopped at that position to unlock the partition cover 12. You. Next, opening loader 1
At 0, the empty paper-feeding package 21 is fed onto the opening table 11 through the opening 4a.

At this time, the opening table 11 is rotated to the vertical position, and the fed paper supply package 21 is
The holding by the unsealing loader 10 is released, and the container is dropped and stored in the collection hopper 22. Thereafter, the unloading loader 10 is returned to the initial position to wait, and the unloading table 11 is rotated and held at the horizontal position.

As described above, through such a series of cycle steps, the package 1 is automatically opened, and the paper supply package 21 in which a part of the sheet bundle 1a is exposed and can be taken out is removed. Obtainable.

As described above, in the configuration of the above-described embodiment, the sheet feeding is performed by adopting the opening method of cutting the front cutout portion 17 and the side cutout portion 18 of the package 1 and peeling off the longitudinal glued portion 1c. The package 1 loaded on the table 7 can be automatically opened, and the operation of taking out the sheet bundle 1a from the package 1 which is conventionally required can be omitted, and the labor can be saved. In addition, stacking of such a package 1 can be easily and accurately stacked and simplified as compared with stacking of the sheet bundle 1a as in the related art.

In the opening method of the above embodiment, the used empty paper-feeding package 21 is once discharged into the collection hopper 22 by using the elevator mechanism 8, and then is again fed by the elevator mechanism 8. Although the example in which the package 1 on the table 7 is opened has been described, the method of opening the package 1 is not particularly limited to the above, and for example, as shown in FIGS. Feeder package 21
In the state where the paper 3 remains, the package 1 below the paper supply package 21 may be opened.

The above-described opening method will be described in more detail. As shown in FIG. 31, the paper feed table 7 on which the packages 1 are loaded is raised, and the partition cover unlock detector 23 detects the uppermost position. The package 1 at the position is the opening table 1
When the position at which the sheet can be moved upward is detected, the lifting of the sheet feeding table 7 is stopped, the lock of the partition cover 12 is released, and the package 1 is conveyed to the opening section 13 by the opening loader 10 as described above. The sheet is opened to form the paper-feeding package 21.

Subsequently, as shown in FIG. 32, the paper feed package 21 is raised by the paper feed table 7 to a position where the exposed sheet bundle 1a can be taken out, and the package upper limit position detector (second When the detecting means 24 detects that the sheet 3 has reached the position where the sheet can be taken out, the elevation of the sheet supply table 7 is stopped, and the sheet 3 can be taken out from the sheet supply package 21 by the pickup roller 5. In both cases, the unsealing loader 10 is operated on the package 1 adjacent to the lower part of the above-mentioned sheet-feeding package 21, and the sheet is opened in the same manner as above to form the sheet-feeding package 21.

However, after the lowermost package 1 is opened in the sheet feeding table 7 on which a plurality of packages 1 are placed, the position of the sheet feeding table 7 is determined by position detecting means (not shown). , The operation of the opening loader 10 and the like at the position where the paper 3 can be taken out of the paper supply package 21 as described above is set to be avoided. 1 is set so that the opening operation is prioritized even if the uppermost position of the sheet feeding package 21 is being fed during the opening operation and the sheet feeding package 21 needs to be lifted up. The feeding operation of the feeder package 21 is temporarily stopped.

As described above, according to the above-described opening method, the package 1 adjacent to the lower portion is opened when the package 21 at the uppermost position is ready to be fed, so that the package 21 at the uppermost position is opened. The replacement of the paper-feeding package 21 after the paper 3 has been consumed can be extremely quickly performed, and the waiting time for the replacement can be reduced. Therefore, the copying time can be shortened, and especially in the case of mass copying, the copying time can be efficiently reduced.

By the way, when the uppermost position of the paper feed package 21 is in the paper feed state as described above, the lower package 1 is opened to prepare the paper feed package 21 in advance. Although it is extremely effective in shortening the copying time, it is difficult to store the used paper-feeding package 21 in the collection hopper 22 by moving the paper-feeding table 7 up and down as shown in FIG. In addition, it takes a little time to move the sheet feeding table 7 and the opening loader 10.

Therefore, in addition to the opening device shown in FIG. 4, for example, as shown in FIG. 33, the recovery stopper 9 can be moved in the direction opposite to the direction A, which is the paper feeding direction. The used package storage hopper 25 may be provided on the rear side of the body 21. That is, in the above configuration, the collection stopper 9 is reciprocally attached to the guide shaft 9c extending in the AB direction via the collection stopper support 9b, and the collection stopper support 9b is reciprocated by driving means (not shown). Is set to

As a result, the topmost sheet-feeding package 2
1 is completely taken out, and the paper-feeding package 21
Is detected by the collection stopper 9 as described above, the collection stopper 9 is immediately moved rearward and the used paper supply package 21 is placed on the used package storage hopper 25. And the paper-feeding package 21 is dropped and stored in the used-package storage hopper 25 by its own weight. After that, the paper-feeding package 21 in the paper-feeding table 7 is raised to a predetermined position by the package upper-limit position detector 24 so that paper can be supplied.

Therefore, in the above configuration, the movement of the paper feed table 7 can be reduced when the used paper feed package 21 is discharged.
In addition, since the operation of the opening loader 10 can be omitted, the replacement time of the paper-feeding package 21 can be further reduced, and the copying time can be reduced, and the efficiency of the copying operation can be improved.

The recovery stopper 9 in the above configuration
In place of, for example, as shown in FIG. 34, a function of holding down the paper-feeding package 21 during paper feeding to restrict the movement of the paper-feeding package 21 during paper feeding, and A discharge roller 26 having a function of discharging the package 21 to the used package storage hopper 25 may be provided.

Such a discharge roller 26 has a rotation shaft 26a along the longitudinal direction of the paper-feeding package 21 above the rear surface of the paper-feeding package 21, and is directed radially outward from the rotation shaft 26a. A plurality of fins 26b made of rubber or the like having flexibility and a large friction coefficient.
When the 6a is rotated clockwise, the distal ends of the fins 26b are set so as to bend and abut on the package 21 for paper feeding.

Therefore, when the discharge roller 26 is locked at a predetermined position, the fin-like body 26 b is
1 can be pressed, and the used paper supply package 21 can be quickly moved in the direction of the used package storage hopper 25 by rotating the discharge roller 26 clockwise. .

In the above-described configuration, the example in which the collection stopper 9 or the discharge roller 26 is provided to discharge the used paper-feeding package 21 to the used-package storage hopper 25 has been described. Instead of discharging the paper feed package 21 to the used package storage hopper 25, the collection hopper 22 is formed by using the paper feed table 7 and the opening loader 10 as described above.
If it is stored in the package, it is not particularly limited to the above, and instead of the collection stopper 9 or the like, for example, as shown in FIG. 27 may be provided. Thus, the above-described configuration can have a simplified structure and can be downsized.

Next, the lock mechanism 12a as shown in FIG. 8 of the partition cover 12 in the configuration of the above embodiment will be described in more detail. As shown in FIG. 36, the lock mechanism 12a locks the partition cover 12 , A locking plate 28 rotatably mounted in the horizontal direction, and the locking plate 2
And a locking plate 2 for urging the locking plate 8 in the unlocking direction.
8, a substantially semicircular cam 30 that abuts the other end, a ratchet 31 that rotates coaxially and integrally with the cam 30, and a latch claw 32 that rotates the ratchet 31.
And a solenoid 33 for reciprocating the latch claw 32
And

On the other hand, as a driving means of the partition cover 12, a driven pulley 34 attached to the rotating shaft 12b of the partition cover 12, a driving pulley 36 for driving the driven pulley 34 via a driving belt 35, and A motor 37 for driving the driving pulley 36 is provided.

Next, the operation of the partition cover 12 will be described. First, as shown in FIG. 37, when the package 1 is placed on the paper feed tray 7 and the start switch (not shown) is turned on, the paper feed is started. The platform 7 is raised, and the package 1 at the highest position
When the upper end of the front surface pushes up the detection lever 23a of the partition cover unlock detector 23, the package 1 faces the opening 4a and detects that the package 1 has reached a position where it can be moved to the opening table 11.

At the standby position of the paper feed tray 7 and when the paper feed tray 7 is raised as described above, the partition cover 12 is locked and cannot be opened. Therefore, when the detection is performed as described above, the ascent and release of the electromagnet are repeated a predetermined number of times inside the solenoid 33 as shown in FIG. Latch claw 32
Reciprocates and the ratchet 31 rotates counterclockwise,
The cam 30 rotates with the rotation.

When the cam 30 rotates in this manner, the locking plate 28 in contact with the cam 30 is urged counterclockwise by the spring 29, so that the locking plate 28 The engagement between the recess 28a and the partition cover 12 is released. Next, the motor 37 is driven to rotate the partition cover 12 via the drive pulley 36, the drive belt 35, and the driven pulley 34 as shown by a two-dot chain line in the drawing. Thereby, the opening 4a is opened like the partition cover 12 indicated by the two-dot chain line in FIG.

On the other hand, the sheet feeding table 7 is lowered and the detector 23 for unlocking the partition cover unlocks the package 1 in front of the opening 4a.
Does not exist, the motor 37 rotates in the opposite direction to the above, returns the partition cover 12 to the original predetermined position, closes the opening 4a, and rotates the cam 30 using the solenoid 33 in the same manner as described above. The stop plate 28 is rotated against the urging force of the spring 29 to lock the locking recess 28a and the partition cover 12 at a predetermined position, thereby locking the partition cover 12.

When the package 1 is present in front of the opening 4a, the lock mechanism 12a is unlocked in order to make the partition cover 12 rotatable, while the sheet feeding table 7 is lowered. When the package 1 does not exist in front of the opening 4a, as in the case where the opening is made, the lock mechanism 12a is locked so that the operator's hand can be intentionally or erroneously inserted into the main body 4 through the opening 4a. Is prevented from entering.

Accordingly, an operator such as a service person or a user intentionally or erroneously causes a hand to enter the main body 4 having the cutter 15 and the side cutters 16 as shown in FIG. Can be prevented.

By detecting the position of the paper feed tray 7 or detecting whether or not the package 1 is placed on the paper feed tray 7, the detection lever of the partition cover unlock detector 23 is detected. It is also possible to provide a protection function for maintaining the locked state of the partition cover 12 without operating the locking plate 28 even if the 23a is intentionally operated.

The drive means for opening and closing the partition cover 12 may be, for example, a motor 8a in an elevator mechanism 8 shown in FIG. A driving force can be used, and the present invention is not limited to the above configuration.

Next, the lock mechanism 12a having the above configuration
A modified example will be described. In addition, about each member provided with the function similar to the said structure, the same member number is given and the description was abbreviate | omitted. In the lock mechanism 12a, FIG.
As shown in FIG. 7, a spring 38 is provided on the locking plate 28 for biasing the locking recess 28 in the locking plate 28 in a direction for maintaining the engagement between the locking cover 28 and the partition cover 12. An actuator 39 for rotating the locking plate 28 against the urging force of the spring 38 is attached to the rotating shaft 28b.

The actuator 39 as shown in FIG.
9, a substantially L-shaped arm 39a extending close to the longitudinal end face of the package 1 moving up and down from the rotation shaft 28b, and the package 1 rising from the tip of the arm 39a. A detection arm portion 39b extending obliquely upward so as to be in contact therewith is provided, and is rotated counterclockwise as the package 1 moves in the ascending direction, ie, the direction D in the drawing.

Also, with the rotation of the actuator 39, the package 39 is brought into contact with the arm 39a.
Is provided with a position detection switch 40 for detecting the position of the partition cover 1 when the actuator 39 rotates.
2 and the partition cover 12 is rotated,
The opening 4a shown in FIG. 4 is opened.

Also in such a configuration, the lock of the partition cover 12 can be released only when the package 1 exists in front of the opening 4a as described above. Thereby, the opening 4a
In the state where the package 1 is not provided before, the hand is prevented from entering the main body 4 through the opening 4a, and injury to the hand is avoided beforehand.

In the structure of the above embodiment, the guide shaft 16a of the side cutters 16 was provided in parallel with the moving direction of the package 1, but for example, as shown in FIG. A configuration using a guide shaft 16′a that is inclined so that the side blade 16d is lowered as the cutter 16 moves in the direction of the opening 4a may be adopted.

In such a configuration, each side cutter 1
Actuators such as solenoids that move the side blades 16d in the direction approaching each other and elastically press the longitudinal end surfaces 1i 1i of the package 1 with a spring or the like as a width adjusting mechanism of 6.16. Are provided, respectively, while each side blade 16d, 16d
-Each cutting edge is attached at an angle so as to face the longitudinal end faces 1i and 1i, respectively, so that the cutting edge can be cut in contact with the cutting edge 1i.

Thus, the above-described structure is realized by each side blade 1
A mechanism for rotating 6d and 16d can be omitted, and simplification and downsizing can be achieved. Further, it is also possible to provide the rotating shaft 11a of the opening table 11 on the side of the opening 4a.

[0132]

According to the opening method of the first aspect of the present invention, as described above, a sheet bundle in which sheets are stacked is formed into a paper-like body such as paper.
The two ends of the paper-like body in one direction are superimposed on the paper bundle.
Glue it into a cylinder and open both sides of this cylinder
Fold the edges left and right and up and down respectively, and finally
A package that is packaged by gluing one part on a bundle of paper
Yes, how to open the package to expose the paper
Method, which is stacked below the cylindrical portion of the package
Side of the package that is different from the
Cut the entire lower end horizontally to form the first cutout
Process and first incisions on both side surfaces of the folded body in the package
To form a second incision by incising the lower end of each side
And the glued part of the part forming the cylindrical part of the package
Peeling step and overlapping on the lower side of the cylindrical part of the package
The package part having the side of the package body from the package body.
And exposing a part of the contained paper.
It is a method to have .

Therefore, the above method can be used, for example, in a copying machine.
If applied to a high-capacity paper cassette, the package is
It is possible to automate the opening of a part that is exposed and can be fed
You can open the conventional package by hand and open the paper
This eliminates the hassle of aligning and placing stacks on the feeder table.
Therefore, there is an effect that labor can be saved .

In the opening method according to the second aspect of the present invention, as described above, the sheet bundle is wrapped in a paper-like body, and the surface provided with the glued portion of the wrapped package is turned up and Feeding the package so that the surface of the package superimposed on the lower side of the glued portion is in the direction of the mounting table, and the glued portion is substantially orthogonal to the moving direction of the package to the mounting table. After being placed on the table, the package is moved in a horizontal direction substantially perpendicular to its longitudinal direction until it comes into contact with the first incision means on the table, and the lower end of the longitudinal side surface of the package is moved. Is cut in the horizontal direction to form a first incision, while the first incisions at both longitudinal end surfaces of the package are formed.
After the lower end on the side of the package is cut, a second cut is formed by each of the second cutting means, and the glued portion is peeled by a peeling claw to form a peeled portion. This is a method in which a portion of the package having a package surface that is superimposed below the glued portion of the package is separated by returning the package to a paper board, and a part of the packaged paper is exposed.

Therefore, if the above method is applied to, for example, a large-capacity paper feed cassette of a copying machine, it is possible to automatically open the package so that a part of the paper is exposed and paper can be fed. It is possible to save the labor of unsealing the package body by hand and aligning and placing the sheet bundle on the sheet feed table as in the related art, thereby achieving an effect of saving labor.

As described above, the opening method according to the third aspect of the present invention is the same as the opening method according to the second aspect .
As the incising means, one having a substantially inverted V-shaped cutting edge is used ,
After cutting the package by inserting the cutting edge near the one end in the longitudinal direction at the lower end of the longitudinal side surface, cut the lower end to the one end by horizontally moving the first cutting means, Next, there is provided a method in which the first incision means is horizontally moved to incise the lower end of the longitudinal side surface to the other end in the longitudinal direction to form the first incision.

Therefore, in addition to the effect of the second aspect of the present invention, the above method further comprises, for example, inserting the first incision means from the longitudinal end face of the package, and incising the lower part of the longitudinal side of the package. In the case where the first incision is formed, when the cutting edge of the first incision means is inserted slightly obliquely between the sheets of the package due to a dimensional error or bending of the package, the sheet is damaged. Although the defect rate is high, the above method can reciprocate the first incising means, so that the blade edge is inserted slightly obliquely between the sheets due to dimensional error or bending of the package, and reciprocates. Since the gap between the sheets is pushed open by the first incision means, it is possible to reduce the damage to the sheet when the first incision is formed and to reduce the sheet defect rate.

[0138] The method unsealing according to claim 4 of the present invention, as described above, in the opening process of claim 2, wherein, as the separation claw, used, equipped with a single-edged shaped portion at its distal end,
After pressing the single-edged portion against the pasted portion into the non-pasted portion adjacent to the pasted portion while pressing the package body surface, the peeling claw is moved horizontally to move the pasted portion. This is a method of forming a peeled portion by peeling.

[0139] Therefore, in addition to the effect of the invention described in claim 2 , the above method can ensure the insertion into the non-glued portion formed in the overlapping portion of the paper-like body in the package, and furthermore, When the peeling nail peels the glued portion, the single-blade portion inserted into the non-glue portion pushes and opens the overlapping portion, and peels the glued portion, so that peeling of the glued portion can be reliably performed. Also, there is an effect that the accuracy of the opening operation can be improved.

In the opening method according to the fifth aspect of the present invention, as described above, in the opening method according to the second aspect , the conveying means for moving the sheet feeding table in the vertical direction and the position of the package are detected. Further using a second detecting means, a plurality of packages are placed on the paper feed tray, the opened packages are moved upward by the transport means, and the package is moved based on a signal from the second detecting means. In this method, the package placed below the body is moved onto the mounting table by the moving means, and the package is opened.

Therefore, in addition to the effects of the invention described in claim 2 , the above-mentioned method further comprises the step of moving the package placed below the package on the basis of the signal from the second detecting means to the moving means. Then, the package is moved onto the mounting table and the package is opened, so that the package stacked below the opened package can be opened.

Therefore, according to the above method, when the use of the paper in the opened package is completed, it is possible to quickly replace the package with the package loaded and opened below the package. In addition, there is an effect that the paper feed loss time in the above-described replacement when a large amount of paper is fed can be reduced.

[0143] opening device according to claim 6 of the present invention, as described above, was clamped in the longitudinal direction both end faces of the placed packaging the feeding table over, a moving means for reciprocally moving the package ,
A mounting table on which the package moved by the moving means is mounted.
When, the longitudinal direction of the package moved onto the mounting table moves horizontally, to form a first incision and the incision in the horizontal direction by inserting the lower end of the longitudinal sides of the package that the cutting edge 1
Cutting means, and the first cuts at both longitudinal end surfaces of the package.
A second incision means for incising the lower end of the side where the opening portion is formed, as by peeling off the gluing unit which is glued superposed longitudinal center portion of the package to form a release portion A peeling claw that moves up and down and horizontally moves above the mounting table is provided.

[0144] Therefore, in the above configuration, the paper in the package can be exposed. By applying the configuration to, for example, a paper feed cassette of a copying machine, the opening of the package can be automated, and the conventional configuration can be used. It is possible to save the labor of unpacking a simple package by hand and aligning a bundle of paper sheets on a paper feed table and placing the paper bundle on the paper feed table, thereby achieving an effect of saving labor.

[0145] opening device according to claim 7 of the present invention, as described above, the sheet in the opening device according to claim 6, wherein a conveying means for moving the feed table in the vertical direction, exposed in the package a sheet feeding means for taking out, first detecting means for detecting the sheet feeding completion of the package, the package of the used based on the signal from the first detecting means, the take-out direction of the sheet it is configured with a discharging means for discharging the different directions are provided.

Therefore, in the above configuration, in addition to the effect of the invention described in claim 6 , the sheet is taken out from the package having the sheet exposed as described above by the sheet feeding means, and the first sheet is taken out.
When the detection means detects the completion of feeding of the package,
Since the discharge means is provided so as to discharge in a direction different from the direction in which the paper is taken out, the package can be discharged. Subsequently, since a plurality of packages can be placed on the sheet feeding table, the packages loaded at the lower part of the package can be moved and opened by the transporting means.

Thus, the above-described configuration has an effect that the operation of discarding the package that has been completely fed can be automated, and it is possible to save the labor of discarding the package by manpower, for example, and to further reduce the labor. .

As described above, the opening device according to the eighth aspect of the present invention is the opening device according to the sixth aspect , wherein the first
An incision means, a second incision means, a peeling claw, and a mounting table are provided in the case; an opening is provided in the case so that the package can be moved between the sheet feeding table and the mounting table; And a partition plate that opens and closes the opening as the package moves between the paper feeding table and the mounting table.

Therefore, in the above configuration, in addition to the effect of the invention described in claim 6, since the partition plate for opening and closing the opening is provided, for example, the operator may accidentally put his / her hand through the opening into the case. Since it is possible to prevent the hand from coming into contact with the first incision means or the second incision means, it is possible to avoid the possibility of injury to the operator's hand.

As described above, according to the opening device of the ninth aspect of the present invention, in the opening device of the sixth aspect, the first
Cutting edge of the cutting means is a generally inverted V-shape, through an elastic member such that the cutting edge is rotatable in the vertical direction is a structure attached to the first incision means.

Therefore, in addition to the effect of the invention as set forth in claim 6 , the above-described structure is further provided in such a manner that the cutting edge is attached to the first incising means via an elastic member so that the cutting edge can be turned up and down. When the blade is inserted between the paper,
The blade is rotated vertically by the pressing force, so that the blade edge can be easily inserted between the paper sheets, which can reduce damage to the paper sheets and also reduce the paper defect rate at the time of opening. Play.

[0152] opening device according to claim 10 of the present invention, as described above, the opening device according to claim 6, wherein the cutting edge of the first incision means is a generally inverted V-shape, toward the cutting edge And a guide portion having a small thickness is provided on the first incision means along the cutting edge.

Therefore, in the above configuration, in addition to the effect of the invention according to the sixth aspect, a guide portion that becomes thinner toward the cutting edge is provided on the first cutting means so as to be along the cutting edge. Therefore, when the blade edge is inserted between the sheets, the leading end of the guide section is also inserted between the sheets, and the gap between the sheets is pushed open. Therefore, contact between the paper and the blade can be avoided, or the contact pressure between the two can be reduced, the damage to the paper by the blade during horizontal movement of the blade can be reduced, and the defective rate of paper at the time of opening can be reduced. It works.

As described above, in the opening device according to the eleventh aspect of the present invention, in the opening device according to the sixth aspect, the lower portions of both ends in the longitudinal direction of the package are pressed in the respective directions. And a pressing and moving means for moving each of the second incising means respectively.

Therefore, in addition to the effects of the invention as set forth in claim 6 , the above-described structure further comprises the second parts so as to press the lower parts of both ends in the longitudinal direction of the package in the mutual directions.
Since the pressing and moving means for moving the incising means are provided, the second incising means appropriately abuts against the both longitudinal end faces of the package, thereby improving the incision accuracy thereof, and furthermore, By setting the set distance of each of the second incising means at the standby position to be longer than the length of the package, moving the package by the moving means, and then moving each of the second incising means, respectively, The two cutting means can cope with a dimensional error of the package and the like, and also has an effect that it is possible to increase the accuracy of the cutting at both end surfaces in the longitudinal direction of the package.

As described above, the opening device according to the twelfth aspect of the present invention includes a sheet bundle formed by stacking sheets, which is wrapped in a substantially rectangular parallelepiped shape by a sheet of paper or the like, and which is packaged by gluing. An opening device that separates an opening package portion, which is a portion, to expose the paper, and holds both longitudinal end surfaces of the package placed on a paper feed table to reciprocate the package. and moving means, the lower end of the longitudinal sides of the the mounting table package moved by the moving means is placed, horizontally moved in the longitudinal direction of the package moved onto the mounting table, the package the cutting edge A first incision means for inserting into the portion and incising in the horizontal direction to form a first incision portion, and incising a lower end portion on both sides in the longitudinal direction of the package body where the first incision portion is formed. a pair of second incision means, et superimposed longitudinal center portion of the package By peeling off the gluing unit which is glued vertically above the so mounting table so as to form a peeling section and a separating claw for horizontal movement provided Te, and the mounting table is, the mounting
The opening for the packaging unit on the resulting so that discharged downward base is a structure which is provided rotatably.

[0157] Therefore, in the above configuration, the paper in the package can be exposed. By applying the configuration to, for example, a paper feed cassette of a copying machine, the opening of the package can be automated, and the conventional configuration can be used. It is possible to save the labor of unpacking a simple package by hand and aligning a bundle of paper sheets on a paper feed table and placing the paper bundle on the paper feed table, thereby achieving an effect of saving labor.

Further, in the above configuration, the mounting table is rotatably provided so that the opening package on the mounting table is discharged downward. For example, the opening package is Even if it does not separate from the second incision means,
Since such an occlusion can be released and the discharge of the opening package body portion can be reliably performed, there is an effect that the reliability of the opening operation can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a mounting direction of a package and an incision site in an opening method of the present invention.

FIG. 2 is a perspective view in which a part of the package is removed.

FIG. 3 is a perspective view of a part of the package.

FIG. 4 is a schematic configuration diagram of an opening device in the opening method.

FIG. 5 is a schematic configuration diagram of an elevator mechanism in the opening device.

FIG. 6 is a perspective view of a recovery stopper and a package of the opening device.

FIG. 7 is a schematic configuration diagram of an opening loader of the opening device.

FIG. 8 is a schematic configuration diagram of a partition cover and a lock mechanism of the opening device.

FIG. 9 is a perspective view of an opening table of the opening device.

FIG. 10 is a perspective view of a peeling claw of the opening device.

FIG. 11 is a main part configuration diagram of the opening device.

FIG. 12 is a perspective view showing a front cutout portion of the package.

FIG. 13 is a perspective view of a cutter of the opening device.

FIG. 14 is a front view and a plan view of a side cutter of the opening device.

FIG. 15 is a perspective view of a main part of the side cutter.

FIG. 16 is an explanatory view showing a method of inserting a cutter in the opening method.

FIG. 17 is an explanatory view showing insertion in the cutter attached via a rigid member.

FIG. 18 is an explanatory view showing insertion in the cutter attached via an elastic member.

FIG. 19 is an explanatory diagram showing a first stage of a peeling method using a peeling nail in the opening method.

FIG. 20 is an explanatory diagram showing a second stage of the peeling method using a peeling nail in the opening method.

FIG. 21 is an explanatory view showing a cutting method of the side cutter in the opening method.

FIG. 22 is an explanatory view showing a third step of the peeling method using the peeling nail.

FIG. 23 is an explanatory view showing a fourth stage of the peeling method using the peeling nail.

FIG. 24 is an explanatory view showing a final stage of a peeling method using the peeling nail.

FIG. 25 is an explanatory view showing a cutting method using a cutter in the opening method.

FIG. 26 is an explanatory view showing the next stage of the above-described incision method.

FIG. 27 is an explanatory view showing an inserted state of the cutter.

FIG. 28 is an explanatory view showing a state in which the side cutter in the opening method does not separate from the opening package.

FIG. 29 is an explanatory view showing a state in which the opening package body is separated from the side cutter.

FIG. 30 is an explanatory view showing a method of discarding a used paper-feeding package in the opening method.

FIG. 31 is an explanatory diagram showing movement of the package to the opening table in the opening method.

FIG. 32 is an explanatory view showing that a package below the opened package is moved to open the package.

FIG. 33 is a schematic diagram of a main part showing a method of discarding a used paper-feeding package in the opening device.

FIG. 34 is a schematic diagram of a main part of a modification of the opening device.

FIG. 35 is a schematic configuration diagram of another modification of the opening device.

FIG. 36 is a schematic perspective view of a modification of the lock mechanism of the partition cover in the opening device.

FIG. 37 is an explanatory diagram showing an operation example when the lock mechanism is used.

FIG. 38 is a schematic configuration diagram showing another modified example of the lock mechanism.

FIG. 39 is an explanatory view showing the operation of the lock mechanism.

FIG. 40 is a schematic configuration diagram showing a modified example of the opening device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wrapping body 1a Paper bundle 1b Wrapping paper (paper-like body) 1c Glued part in the longitudinal direction 7 Paper feed table 11 Opening table (mounting table) 17 Front cutout part (first cutout part) 18 Side cutout part (second cutout part)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toyoaki Namba 22-22, Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside (72) Inventor Yuji Sugimoto 22-22, Nagaikecho, Abeno-ku, Osaka-shi, Sharp (56) References JP-A-57-142826 (JP, A) JP-A-61-33921 (JP, A) JP-A-64-9110 (JP, U)

Claims (12)

(57) [Claims] 1. A sheet bundle formed by stacking sheets is formed into a paper-like body such as paper.
The two ends of the paper-like body in one direction are superimposed on the paper bundle.
Glue it into a cylinder and open both sides of this cylinder
Fold the edges left and right and up and down respectively, and finally
A package that is packaged by gluing one part on a bundle of paper
Yes, how to open the package to expose the paper
Method, wherein the surface of the package body that is stacked below the cylindrical portion of the package body
The entire lower end of the side that is different from the folded side
Forming a first incision by incision in the horizontal direction, and lower ends of both side surfaces of the package on the first incision side;
Forming a second incision by incising the respective portions, and peeling off the glued portion of the portion forming the tubular portion of the package.
And the step of stacking the side of the package stacked below the cylindrical portion of the package.
Having the package part separated from the package body and contained
Exposing a portion of the paper that is present
And opening method. 2. An opening method of wrapping a stack of sheets in a substantially rectangular parallelepiped shape with a sheet of paper or the like, cutting the package packaged by gluing, and exposing the sheet, wherein the sheet is exposed. Moving means for sandwiching the longitudinal ends of the package placed on the package and reciprocating the package; a mounting table on which the package moved by the moving means is mounted; and a mounting table in the package. A first incision means for incising the lower end of the longitudinal side surface moved upward, a pair of second incision means for incising while pressing the lower parts of both longitudinal end faces of the package in mutually directions, and the package Using a peeling claw that moves up and down above the mounting table and moves horizontally so as to peel off the glued portion that is superimposed and glued in the longitudinal direction of the central portion of the package, the surface of the package body having the glued portion upward, And a package stacked below the glued portion. Save face in the stage direction,
After placing the package on the paper feeding table so that the glued portion is substantially perpendicular to the moving direction of the package to the mounting table, the package is substantially perpendicular to the longitudinal direction. The package is moved in the horizontal direction until it comes into contact with the first incision means on the mounting table, and the lower end of the longitudinal side surface of the package is horizontally incised to form a first incision. Below the side where the first incision is formed at both end faces in the direction
After the end is cut, a second cut is formed by each of the second cutting means, and the glued portion is peeled by a peeling claw to form a peeled portion. Opening the package body having a package body surface superimposed below the glued portion of the package body, and exposing a part of the wrapped paper. . 3. A opening method according to claim 2, wherein, those with substantially inverted V-shaped edge as the first incision means
After inserting the cutting edge near the one end in the longitudinal direction at the lower end of the longitudinal side surface to cut the package, then horizontally moving the first cutting means to move the lower end to the one end. Making an incision, and then horizontally moving the first incising means to incise the lower end of the longitudinal side surface to the other end in the longitudinal direction to form the first incision. 4. A unsealing method according to claim 2, as the separation claw, those with a single-edged shaped portion at its distal end
Using , while pressing the single-edged portion against the surface of the package, after inserting the non-glued portion adjacent to the glued portion facing the glued portion, horizontally moving the peeling claw, An opening method, wherein a glued portion is peeled off to form a peeled portion. 5. A unsealing method according to claim 2, wherein a conveying means for moving the feed table in the vertical direction, further using a second detection means for detecting the position of the package, a plurality of packaging the The package placed on the paper feed table and opened is moved upward by the transport means, and the package placed below the package is moved by the moving means based on a signal from the second detection means. To move on the mounting table,
An opening method, comprising opening the package. 6. An unsealing device for wrapping a stack of sheets in a substantially rectangular parallelepiped shape with a sheet of paper or the like, cutting out the package packaged by gluing, and exposing the sheet, wherein the sheet is exposed. and clamping the longitudinal end faces of the placed packaging, movement of the wrapping material and moving means for reciprocating the mounting table package moved by the moving means is mounted, on the mounting table First cutting means for horizontally moving in the longitudinal direction of the packaged body, inserting the cutting edge into the lower end portion of the side surface in the longitudinal direction of the packaged body, and cutting in the horizontal direction to form a first cutout portion
And the first incisions at both end surfaces in the longitudinal direction of the package are formed.
A second incision means for incising the lower portion of the made is to have side the packaging body central portion longitudinally superimposed by peeling off the gluing unit which is glued to the mounting table so as to form a peeling section of the An opening device comprising a peeling claw that moves up and down and moves horizontally. 7. The opening device according to claim 6, wherein a conveying means for moving the feed table in the vertical direction, the sheet feeding means for taking out the paper exposed in the package
When discharge for discharging a first detection means for detecting a paper feeding completion, the packaging signal on the basis of the used from the first detecting means, in a direction different from the take-out direction of the sheet in the package opening device, wherein a means is provided. 8. The opening device according to claim 6 , wherein the first incising means, the second incising means, the peeling claw, and the mounting table are provided in a case, and a package is provided between the sheet feeding table and the mounting table. An opening is provided in the case so as to be movable,
An opening device, wherein a partition plate for opening and closing the opening is provided in accordance with the movement of the package between the sheet feeding table and the mounting table by the moving means. 9. The opening device according to claim 6, wherein the cutting edge of the first incision means is a generally inverted V-shape, through an elastic member such that the cutting edge is rotatable in the vertical direction above An opening device attached to the first cutting means. 10. A opening device according to claim 6, wherein the cutting edge of the first incision means is a generally inverted V-shape, the thinner the guide portion of the thickness toward the cutting edge in the first incision means An opening device provided along the cutting edge. 11. The unsealing device according to claim 6, further comprising pressing and moving means for moving each of said second cutting means so as to press the lower portions of both end surfaces in the longitudinal direction of said package in the mutual directions. Opening device. 12. A sheet bundle formed by stacking sheets of paper is wrapped in a substantially rectangular parallelepiped shape by a paper-like body such as paper, and an opening package part, which is a part of a package packaged by gluing, is separated to form the sheet. a unsealing device for exposed and clamped in the longitudinal direction both end faces of the placed packaging the feeding table over, a moving means for reciprocally moving the package, package moved by the moving means is mounted And the package moved on the mounting table is horizontally moved in the longitudinal direction, and its cutting edge is inserted into the lower end of the longitudinal side surface of the package to make a horizontal incision to form a first incision. First incision means for forming
And the first incisions at both end surfaces in the longitudinal direction of the package are formed.
A pair of second incision means for incising the lower end on the side being formed
And a peeling claw that moves up and down above the mounting table so as to form a peeling part by peeling off the glued part that is superimposed and glued in the longitudinal direction of the center part of the package, and is provided .
One, opening device the mounting table, characterized in that the opening packaging body on the mounting table disposed rotatably obtained so that discharged downward.