JP2012035350A - Device for removing binding staple, and device for forming image - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for removing a binding staple, which is configured to substantially automatically optimize a clearance into which a staple remover corresponding to a removing member is inserted between the staple and a sheet surface to prevent a damage to the sheet surface or the impairing of the planarity of the sheet from occurring.SOLUTION: The device removes the staple from a bound batch of sheets by inserting the staple remover 102 capable of removing the staple between the staple and the sheet surface in a binding position of the batch of sheets bound by the staple. The device has a mechanism that causes both ends and a midportion of the staple in a longitudinal direction to deform in each relative direction to swell out the midportion relative to the both ends of the staple before inserting the staple remover 102, and forms the clearance between the midportion and the sheet surface. The mechanism includes: a pressing member 11 for pressing the longitudinal midportion from a lower side to an upper side; and a pressing member 10 for pressing the longitudinal both ends from the upper side to the lower side.

Description

  The present invention relates to a binding needle removing device and an image forming apparatus.

A sheet such as a recording sheet that is output by an image forming apparatus such as a copying machine, a printer, or a printing machine may be bound every plural sheets.
On the other hand, when cutting or reusing a sheet bundle bound with a needle, it is necessary to remove the needle.
2. Description of the Related Art Conventionally, in addition to the case where a needle is manually removed, a cutting apparatus and a document scanning apparatus equipped with a device called a staple remover having a mechanism for automatically removing a needle for the purpose of reducing human burdens. Known (for example, Patent Document 1).

  Patent Document 1 discloses a configuration in which a needle removing claw located on the lower surface of a sheet bundle is rotated by pressing the upper surface of the sheet bundle and is removed between the needle and the surface of the sheet bundle. .

  As another example of the configuration in which the removal member is inserted between the surface of the sheet bundle and the needle and the needle is removed, it is not a rotating type removal claw disclosed in Patent Document 1, but a needle A configuration using a clamping claw that enters between the needle and the sheet bundle surface so as to be sandwiched from both sides has also been proposed (for example, Patent Document 2).

  In the configuration disclosed in each of the above patent documents, it is assumed that the staple position in the sheet bundle is manually positioned and aligned with the removal claw or the clamping claw. On the other hand, it is necessary to press the sheet bundle so that the tip of the nail can accurately enter the position of the needle.

On the other hand, the structure which positions a removal member corresponding to the position of a needle | hook is also proposed (for example, patent document 3).
Patent Document 3 discloses a configuration that can automatically detect the position of the needle and remove the needle.

  In addition, as a configuration for preventing needle removal mistakes, the size and thickness of a sheet bundle to be subjected to needle removal are detected, and if the size and thickness are greater than or equal to a specified value, a spatula-like insertion member and gripping member There has also been proposed a configuration for stopping the operation of the member for gripping the needle (for example, Patent Document 4).

In the case of automating the removal of the needle, it is necessary to use a removal member having a spatula-shaped tip to pry between the needle and the sheet bundle surface to remove the needle.
Making the tip of the removal member easy to insert between the needle and the surface of the sheet bundle is important in preventing removal errors. For this reason, it is desirable to provide a sufficient gap between the needle and the sheet bundle surface so that the removal member can be inserted.

  When the above-mentioned gap is absent or small, when the leading end of the removal member is inserted between the needle and the sheet surface, the binding position of the sheet is torn or torn as the needle is pulled out. There is a risk of mistakes and removal.

It is difficult to easily determine with a removal mechanism as disclosed in the above-mentioned patent document, because how much the gap for extracting the needle is not uniform depending on the thickness of the sheet, the number of sheets bundled, etc. Is the current situation.
For this reason, in order not to damage the sheet surface when the removal member is inserted, the insertion operation is repeatedly tried, the gap size corresponding to the thickness of the sheet and the number of bundles is determined, and then the needle removal operation is performed. Often done.

  Therefore, when automating the removal of the needle in a state where damage to the sheet surface is prevented, it is not expected to improve the workability so much as compared with the manual removal work due to repeated insertion work. .

On the other hand, when a part of the sheet is damaged, the sheet may not be reused, and the energy saving effect due to the reuse of the sheet may be impaired.
In particular, if the flatness is impaired due to tearing, partial tearing, or warping of the hole edge from which the needle has been removed, the sheet original from which the needle has been removed is read. In such a case, jamming may occur in the transport path, which may cause reading failure.
Such a phenomenon is caused by an abnormal force generated at the removal position of the needle at the time of pulling out, especially when a large number of fine papers are bundled with a small resistance to the force or when a small number of sheets are bundled. It becomes remarkable when it is a bundle.

  On the other hand, as disclosed in Patent Document 3, when positioning the needle pulling means, the binding position in the actual sheet is matched with the position of the needle punching means after the binding position is recognized as information in advance. There is a need. However, since the size of the needle is extremely small, it is very difficult to accurately position the needle removing means at the center of the binding position.

In other words, the binding needle has a configuration in which both ends in the longitudinal direction are bent and the shape of the front view is U-shaped to bind the sheet, the needle diameter is 0.35 mm, and the length to the bent portion is about 9 mm. Since it is small, the length of the bent piece must be suppressed to about ± 1 mm in order to allow entry of the needle removing means.
However, in reality, the length of the bent piece portion denoted by reference numeral 1A in FIG. 1 may be different due to the influence of the binding thickness and the like, so that the bent base piece along the sheet surface (indicated by reference numeral 1B in FIG. 1). This also changes the length of the portion), and it becomes extremely difficult to align the center of the bent base piece of the needle with the center of the needle removal means when the needle removal means enters.

  In addition, when a part of the binding needle is gripped and pulled out instead of entering the needle pulling means into the binding needle, there is no gap between the binding needle and the sheet surface, and the so-called binding needle is When the binding is performed by biting from the surface, the binding needle is gripped in a state where the gap between the surface of the sheet and the needle is opened, so that the sheet surface is likely to be damaged.

  An object of the present invention is to make it possible to almost automatically optimize a gap for inserting a needle removing means corresponding to a removal member between a needle and a sheet surface in view of the problems in the conventional binding needle removing apparatus. It is another object of the present invention to provide a binding needle removing device having a configuration capable of preventing damage to the sheet surface and loss of flatness and an image forming apparatus using the same.

  Another object of the present invention is to make it possible to easily set the consistency of the center position of the needle removal means and the binding needle entering between the binding needle and the sheet surface, so that the so-called positioning of the needle removal means with respect to the binding needle is performed. It is an object of the present invention to provide a binding needle removing means having a configuration that can facilitate the above.

In order to achieve this object, the present invention has the following configuration.
According to the first aspect of the present invention, from the sheet bundle in which the needle is bound by inserting a needle pulling means capable of pulling out the needle between the needle and the sheet surface at the binding position of the sheet bundle bound by the needle. A device for removing,
Before insertion of the needle removal means, the longitudinal ends of the needle and the center are deformed in a relative direction so that the central portion of the needle bulges against both ends, so that the center portion and the sheet surface are Is provided with a mechanism for forming a gap.

The invention according to claim 2 is a mechanism for deforming the central portion in the longitudinal direction of the needle in a relative direction with respect to the both end portions.
A member that can simultaneously press the center in the longitudinal direction and both ends of the needle in a relative direction is used.

  According to a third aspect of the present invention, the relative direction is a pressing direction in which the longitudinal center of the needle is deformed from the lower side to the upper side, and both longitudinal ends of the needle are deformed from the upper side to the lower side. It is characterized by the direction.

The invention according to claim 4 is a member that deforms the center in the longitudinal direction and both ends of the needle in a relative direction.
A deforming means provided on the outer peripheral surface with a deformation generating portion that is movable while facing the needle positioned inside;
The deformation occurrence portion of the deformation means is formed by a center portion in the longitudinal direction by pressing the both ends in the longitudinal direction by changing the width between the surfaces facing the both ends in the longitudinal direction of the needle from the wide to the narrow along the moving direction. It is characterized by comprising a guide part that bulges in a direction to float up from the surface of the sheet.

  According to a fifth aspect of the present invention, the guide portion is provided on the outer peripheral surface of the rotatable roller so as to face both ends in the longitudinal direction of the needle, and the narrow portion is formed on the inner surface of the guide portion. A claw member capable of entering into a gap formed by bulging out the center in the longitudinal direction of the needle when opposed to both ends in the direction is provided.

  The invention according to claim 6 is characterized in that the friction coefficient between the claw member and the sheet is set lower than that between the sheets.

According to a seventh aspect of the present invention, there is provided, from a sheet bundle in which the needles are bound by inserting a needle pulling means capable of pulling out the needles between the needles and the sheet surface at a binding position of the sheet bundles bound by the needles. A device for removing,
A recess provided in a part of the sheet placement surface, and a pressing member capable of pressing the vicinity of the binding position of the sheet toward the recess when the recess has the binding position of the sheet. ,
When the binding position is opposed to the recess, the pressing member presses the binding position surface of the sheet against the needle to form a gap between the needle and the sheet surface, It is characterized in that the needle removing means enters the gap.

  The invention according to claim 8 is characterized in that, as the needle removing means, a spatula part capable of entering a gap between the needle and the sheet surface is provided in the pressing member at the tip of the pressing member. Yes.

  In a ninth aspect of the present invention, the pressing member used as the needle pulling means is provided so as to be movable in the thickness direction of the sheet bundle at a position facing the concave portion, and the sheet is in a direction perpendicular to the thickness direction. The needle is pulled out of the sheet when moving.

  According to a tenth aspect of the present invention, there is provided a removal needle collecting portion in the concave portion, and the needle pulled out by the pressing member in the process of moving the sheet in a direction perpendicular to the thickness direction falls into the concave portion. It is characterized by being collected.

According to the eleventh aspect of the present invention, there is provided a sheet bundle in which the needle is bound by inserting a needle pulling means capable of pulling out the needle between the needle and the sheet surface at a binding position of the sheet bundle bound by the needle. A device for removing,
Positioning movement means for moving one end edge of the sheet toward the needle removal alignment position in a state in which one end portion of the both ends in the longitudinal direction of the needle is bent upward;
A binding processing moving means for pressing the needle at the binding position of the sheet, the edge of which is positioned, and moving the sheet toward the needle pulling means;
A needle guide member that guides the position of the center in the longitudinal direction of the needle toward the position facing the needle removing means in the process of moving by the binding processing moving means;
By pressing the sheet downward from one side of the needle at a position where the needle binding the sheet faces the needle removing means, the binding position of the sheet is curved downward and convex together with the needle. Pressing means,
After the sheet and the needle are curved in a downwardly convex shape by being pressed by the pressing means, the sheet surface and the needle are recovered by restoring the shape of the sheet by returning the pressing means to the initial position. A gap is formed in which the needle removing means can enter.

  According to a twelfth aspect of the present invention, the positioning and moving means uses a roller that contacts the sheet surface and is rotatable in one direction, and the binding processing moving means is opposed to the needle removing means in the needle. A sliding member that is in contact with a surface opposite to the surface to be moved and is capable of advancing and retreating with respect to the needle pulling means is used. A funnel-shaped convex guide is used which is narrowed and can be opposed to the bent portion of the needle in a plan view, and the pressing means can press the sheet surface in an open space between the bent pieces of the needle. An arm member is used.

According to a thirteenth aspect of the present invention, there is provided a sheet bundle in which the needles are bound by inserting a needle pulling means capable of pulling out the needles between the needles and the sheet surface at the binding position of the sheet bundles bound by the needles. A device for removing,
An upper table disposed opposite the upper surface of the sheet bundle;
A lower table in which a part of the facing surface of the sheet bundle is opened and a bent end portion of the needle at the binding position of the sheet bundle can be exposed;
A cutter table equipped with a vertically movable cutter unit disposed opposite to the open portion of the lower table;
A pressing member that is provided on the cutter table side and can be moved up and down, and at the time of rising, presses the binding position of the sheet from the lower side to the upper side to bend and deform the sheet to have an upward convex shape; and
Needle removal means provided on the upper table side,
The upper table is provided so as to be movable in parallel with the surface of the sheet bundle, and a backing surface facing the cutter unit along the moving direction, a concave surface facing the pressing member, and the needle removing means, An opposing penetrating portion, and before the needle is pulled out by the needle pulling means, the cutter unit removes the bent piece end of the needle, and then the pressing member removes the sheet from the concave surface of the upper table. After being pressed and deformed, the needle is pulled out by the needle pulling means in a state where a gap is formed between the sheet surface and the needle by returning the initial position of the pressing member.

  According to a fourteenth aspect of the present invention, the needle removing means has a structure capable of rotating so as to be able to enter a gap formed between the needle and the sheet surface.

  A fifteenth aspect of the invention is characterized in that the binding needle removing device according to one of the first to fourteenth aspects is used.

  According to the present invention, in the vicinity of the binding position of the sheet bundle, the both ends of the needle in the longitudinal direction and the central portion are deformed in the relative direction, and in particular, the needle and the sheet are simply bulged with respect to the both ends. A clearance for allowing the needle removing means to enter can be provided between the surface and the surface. This facilitates the entry of the needle pulling means, and enables the binding needle to be reliably removed while preventing damage to the sheet surface.

  In particular, as a configuration for pressing the center in the longitudinal direction of the needle, it is only necessary to use a spatula-shaped pressing member that can press the sheet bundle toward the recess, and the pressing member can have the function of a needle removing means. Therefore, it is possible to easily enter the needle removing means without increasing the configuration.

  In the present invention, a guide member is provided for aligning the longitudinal center position of the needle and the center position of the needle pulling means by using the movement of the sheet bundle, so that the center position of each member is automatically aligned. It becomes possible to make it. Thus, the needle removal position can be aligned with a simple configuration without requiring complicated position alignment control.

  Furthermore, in the present invention, the folded piece end part which is a part of the shape part of the needle can be cut, so that compared with the case where the folded piece end part at the time of extraction is extracted while remaining on one surface of the sheet bundle. It is possible to reduce the resistance at the time of extraction and easily remove the sheet without damaging the sheet surface.

It is a schematic diagram for demonstrating the principle of the binding needle removal apparatus by this invention. It is a figure for demonstrating the structure of 1st Example regarding the binding needle removal apparatus by this invention using the principle shown in FIG. It is a schematic diagram which shows the partial modification of the structure shown in FIG. It is a schematic diagram for. It is a schematic diagram for demonstrating the needle | hook removal mechanism used for the binding needle removal apparatus shown in FIG. It is a figure for demonstrating a partial modification to the needle | hook removal mechanism shown in FIG. It is a schematic diagram for demonstrating the principle structure of 2nd Example regarding the binding needle removal apparatus by this invention. It is a schematic diagram for demonstrating the structure of the guide part used for the principle structure shown in FIG. It is a figure for demonstrating the effect | action by the principle structure shown in FIG. It is a figure for demonstrating the other specific example using the principle structure shown in FIG. FIG. 10 is a schematic diagram for explaining a configuration of a drive system in the configuration shown in FIG. 9. It is a figure for demonstrating the principle structure of 3rd Example regarding the binding needle removal apparatus by this invention. It is a figure for demonstrating the partial modification of the principle structure shown in FIG. It is a figure for demonstrating the effect | action by the modification shown in FIG. It is a figure for demonstrating the principle structure of 4th Example regarding the binding needle removal apparatus by this invention. FIG. 15 is a schematic plan view of the configuration shown in FIG. 14. It is a figure for demonstrating the one aspect | mode by the structure shown in FIG. It is a figure for demonstrating the other aspect by the structure shown in FIG. It is a block diagram for demonstrating the structure of the control system used for the structure shown in FIG. It is a flowchart for demonstrating the effect | action of the control system shown in FIG. It is a schematic diagram for demonstrating the principle structure of 5th Example regarding the binding needle removal apparatus by this invention. It is a figure for demonstrating the structure of the principal part in the structure shown in FIG. It is a figure for demonstrating the effect | action by the structure shown in FIG. It is a schematic diagram for demonstrating the structure of the needle | hook removal means used for the binding needle removal apparatus shown in FIG. It is a block diagram for demonstrating the structure of the control system used for the structure shown in FIG.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic diagram for explaining the operation principle of the binding needle removing apparatus according to the present invention. In the figure, a general case relating to the state of the binding needle (hereinafter also referred to as a needle for convenience) and the sheet surface and a case according to the present invention are shown.

In FIG. 1, (A) and (B) show a binding state of a general sheet bundle S0.
The needle 1 has a substantially U-shaped front view by bending both ends in the longitudinal direction. Both ends in the longitudinal direction are bent pieces 1A, and the center side in the longitudinal direction of the needle where these end portions are continuous is a bent base piece 1B along the surface of the sheet.
The folded base piece 1B is parallel to the surface of the sheet S as shown in FIG. 1 (A), and is bent and bent toward the surface side of the sheet S as shown in FIG. 1 (B). Either. The difference between these states occurs depending on the thickness of the sheet bundle to be bound and the form of the bending guide of the needle when binding.

  In the state shown in FIG. 1A, the bent base piece 1B forms a uniform gap d with the sheet surface along its longitudinal direction. In the state shown in FIG. The gap d has been removed from the central portion in the longitudinal direction. In particular, not only when the central portion in the longitudinal direction is in contact with the sheet surface and there is no gap d, there is a state in which the sheet surface is deformed into a concave shape by being pressed against the sheet surface.

  In the present invention, in order to form a gap between the needle 1 and the surface of the sheet S, as shown in FIG. 1 (C), a bent base piece 1B corresponding to the central portion in the longitudinal direction of the needle 1 is provided. Both ends in the longitudinal direction bulge with respect to the corresponding bent piece 1A.

In the present invention, as a method of bulging the longitudinal central portion with respect to both longitudinal end portions, as shown by arrows in FIG. 1C, a force is applied to the longitudinal central portion and both longitudinal end portions in relative directions. The method of making it deform | transform is used.
In the case shown in FIG. 1 (C), the longitudinal center portion of the needle 1 is a pressing direction that deforms from the lower side to the upper side, and both longitudinal end portions are the pressing directions that are deformed from the upper side to the lower side, The central part in the longitudinal direction is lifted from the surface of the sheet S.

2A and 2B are diagrams showing a configuration for causing the above principle to function, wherein FIG. 2A is a front view and FIG. 2B is a side view.
In FIG. 2, upper and lower pressing members 10 that are curved in a shape capable of setting the above-described pressing direction corresponding to the binding position of the sheet bundle S <b> 0 bound by the needle 1 at the upper and lower positions of the sheet bundle S <b> 0. A lower side pressing member 11 is arranged.

  The upper-side pressing member 10 and the lower-side pressing member 11 can move in directions that can be brought into and out of each other, and when moved in directions that approach each other, the state shown in FIG. It has become. As the contact / separation mechanism, although not shown, a cam mechanism, a linear actuator, or the like is used.

  FIG. 3 shows a partial modification of the configuration shown in FIG. 2. In FIG. 3, a lower pressing member having the same configuration as that shown in FIG. 2 (indicated by reference numeral 11 'for convenience) is shown. Is provided so as to correspond to only one side of the front and back surfaces of the needle 1.

FIG. 4 shows the configuration of the binding needle removing apparatus 100 provided with a needle removing means in addition to the mechanism for forming the gap described above.
4, the binding needle removing device 100 includes a gap forming mechanism 101 having a configuration shown in FIG. 2 or FIG. 3 and a needle pulling means 102, and the sheet bundle S0 is a transparent placement guide member 103. The binding position is positioned with respect to the gap forming mechanism 101.

  The needle punching means 102 has a scissors structure similar to a tongue or a plier having a tip 102A having a pair structure that can enter into a gap formed between the needle 1 and the sheet surface. The needle pulling means 102 can be displaced toward the needle 1 in the binding position, but is not limited to using a driving source in order to enable this displacement, and the operator holds the tip in the gap. It is also possible to enter.

Since the present embodiment is configured as described above, a gap d is formed between the bent base piece 1B of the needle 1 and the sheet surface by the gap forming mechanism 101 before the needle 1 is extracted by the needle removing means 102. The
That is, in FIG. 4, the sheet bundle S0 is placed on the placement guide member 103 and the binding position is positioned at the position of the gap forming mechanism 101.

  In this state, when the upper side pressing member 10 and the lower side pressing member 11 equipped in the gap forming mechanism 101 move in a direction approaching each other, as shown in FIG. And both end portions are deformed in the relative direction, and the bent base piece 1B corresponding to the central portion in the longitudinal direction is lifted from the sheet surface, whereby a gap d is formed between the sheet surface and the sheet surface.

  When the sheet bundle S0 in which the gap d is formed with the needle 1 moves on the placement guide member 103 so that the binding position is opposed to the needle pulling means 102, the tip of the needle pulling means 102 is moved into the gap d. The needle 1 is pulled out by moving the needle pulling means 102 away from the binding position.

  As shown in FIG. 5 (A), the needle removing means 102 has a width as shown in FIG. 5A so that it can cope with a case where the area of the bent base piece 1B where the gap d is formed is short. A narrow pair structure (indicated by reference numeral 102A) is used, and as shown in FIG. 5B, the front end portion entering the gap d is bent and the central portion (indicated by reference numeral 102A ') of the bent base piece 1B is first. It is possible to make the length of the tip longer than the other tip (indicated by reference numeral 102A) so that entry into the can be started.

  Further, the needle pulling means 102 that contacts the surface of the sheet is made of a material whose friction coefficient with respect to the sheet surface is smaller than the friction coefficient between the sheets in order to reduce contact resistance and prevent movement of the sheet bundle. Has been.

In the present embodiment, the longitudinal center and both ends of the needle 1 at the binding position in the sheet bundle S0 are deformed in a relative direction so that the center in the longitudinal direction is lifted from the sheet surface, so that a gap is reliably formed. As a result, there is no situation where the needle 1 and the surface of the sheet are forcibly opened by the needle punching means.
This prevents damage to the sheet surface. In addition, since the operation of deforming the longitudinal center portion and both end portions of the needle 1 in the relative direction can be performed only by the pressing operation of the pressing member, the needle removing means can be used without special positioning control or position indexing. Allows entry.
Note that the binding needle removing device according to the present invention is not limited to being applied to a document reading unit that may be provided in an image forming apparatus, although not described in detail, and is applied to a device that requires needle removal such as a shredder. Is also possible.

Next, a second embodiment relating to the binding needle removing apparatus according to the present invention will be described.
The feature of the present embodiment is that the width between the surfaces facing the both ends in the longitudinal direction of the needle along the moving direction changes from a wide width to a narrow width and presses the both ends in the longitudinal direction so that the longitudinal central portion is A guide portion is provided that bulges in a direction to rise from the surface of the sheet.

6 and 7 are diagrams for explaining the above characteristics.
In FIG. 6, a configuration is used in which the sheet bundle S0 can move in a direction to be introduced into the binding needle removing device 200 and in a direction perpendicular to the introduction direction after introduction.
As shown in FIG. 6B, the binding needle removing apparatus 200 is provided with a gap forming mechanism 202 that is suspended and supported by an elastic member 201 such as a spring in the apparatus main body.

As shown in FIG. 7, the gap forming mechanism 202 has a width longer than the length of the bent base piece 1 </ b> B corresponding to the central portion in the longitudinal direction of the needle 1 along the moving direction (in FIG. 7, the symbol L <b> 1 An inclined guide portion 202A that extends from a portion (indicated by reference numeral L2 in FIG. 7) to a width shorter than the length of the bent base piece 1B is provided.
The inclined guide portion 202A is formed as a concave portion into which the needle 1 can be fitted, and at the position where the width becomes the narrowest, a hook-like claw member 20B is disposed at the center of the width as a needle removing means.

  The hook-like claw member 202B uses an angle piece or a hook-like member whose base is fixed to the bottom surface of the inclined guide portion 202A, and a bent tip portion is formed in a gap formed between the needle 1 and the sheet surface. It is designed to enter.

  Since the present embodiment is configured as described above, the sheet bundle S0 is introduced into the binding needle removing device 200 and moved along the inclined guide portion 202B, whereby the longitudinal center portion and both end portions of the needle 1 are moved. Is deformed in the relative direction, and the center position of the central portion in the longitudinal direction is aligned with the center position of the hook-like claw member 202B used as the needle removing means.

FIG. 8 is a diagram illustrating the deformation state of the needle 1 and the change in the longitudinal center position in the process of moving the tilt guide portion 202A.
In the same figure, the needle 1 changes from the state shown in FIG. 8A to the state shown in FIG. 8B by utilizing the fact that the opposing width of the inclined guide portion 202A becomes narrower as it moves in the inclined guide portion 202A. As described above, the center in the longitudinal direction is made to coincide with the center in the width direction of the inclined guide portion 202A.

Further, when the shoulders of the bent piece portions 1A located at both ends in the longitudinal direction are pressed by the narrow guide surfaces in the process of moving in the inclined guide portion 202A, the needle 1 is bent at the both ends in the longitudinal direction. The folding base piece 1B positioned downward and in the central portion in the longitudinal direction is pressed upward, and as a result, the central portion of the bending base piece 1B positioned in the central portion in the longitudinal direction bulges upward.
As a result, a gap is formed between the bent base piece 1B located at the center in the longitudinal direction of the needle 1 and the sheet surface, and when the gap passes through the position of the hook-like claw member 202B, the hook-like claw member 202B is within the gap. And the needle 1 is pulled out.

The movement of the sheet bundle S0 is not limited to manual operation, and although not shown, a conveyance mechanism for the sheet bundle S0 can also be used.
In addition, regarding the said inclination guide part 202A, it is not restricted to comprising with a concave part, but it can also comprise with convex parts, such as a rib.

Next, the modification regarding an inclination guide part is demonstrated.
FIG. 9 shows a state in which an inclined guide portion whose width between the opposing surfaces becomes narrow along the moving direction is provided on the outer peripheral surface of the rotatable roller.
On the outer peripheral surface of the roller 205, convex ribs (indicated by reference numeral 202A ′ for convenience) are provided as inclined guide portions used for the gap forming mechanism 202. At the minimum width position of the inclined guide portion 202A ′, A claw member 202B is provided.

  Unlike the case of FIG. 8, this configuration is characterized in that a gap can be formed in the process of transporting the sheet bundle S0 instead of manually guiding the sheet bundle S0 to the binding needle removing device 200. .

  FIG. 10 is a diagram illustrating a driving system of a roller 205 used in the conveyance mechanism and the gap formation mechanism 202 of the sheet bundle S0. In FIG. 10, the roller 205 is disposed in the conveyance path of the sheet bundle S0. A clutch 205A that operates according to the detection result of the binding position detection sensor 206 is provided, and a driven gear 207 is integrated on the same axis as the clutch 205A.

  On the other hand, the conveying rollers 208 and 208 ′ of the sheet bundle S0 are rotated together by gears 209 and 209 ′ provided on the rotation shaft, and one of the gears 208 is moved to the gear 207 on the roller 205 side. It can mesh and transmit rotation.

  In this configuration, when one of the conveying rollers 208 ′ rotates in conjunction with the driving motor M, the sheet bundle S <b> 0 is conveyed by the gears 208 and 208 ′ being rotated together. When the binding position of the conveyed sheet bundle S0 is detected by the binding position detection sensor 206, the clutch 205A is switched on and the rotation of the gear 207 is transmitted to the roller 205.

  In the configuration as described above, as compared with the case shown in FIG. 8, the operation of forming a gap between the needle 1 and the surface of the sheet in the conveying process of the sheet bundle S0 and the needle 1 by the hook-like claw member 202B. The drawing operation is performed by more complete automation.

Next, a third embodiment relating to the binding needle removing apparatus according to the present invention will be described.
In the present embodiment, the longitudinal center portion and both end portions of the needle 1 are not deformed in the relative direction by the guide member described above, but the deformation in the relative direction is made between the both end portions by pushing the center portion in the longitudinal direction. It is characterized by generating.

  FIG. 11 is a diagram for explaining this principle configuration. In FIG. 11, the binding needle removing device 200 is a part of the moving placement unit 250 for placing and moving the sheet bundle S0. As shown in FIG. 11B, a recess 250A is provided at a position facing the central portion in the longitudinal direction of the needle 1 at the binding position.

On the other hand, a spatula 251 as a pressing member having a tapered tip is disposed at an upper position facing the recess 250A, and the spatula 251 is moved up and down in parallel with the thickness direction of the sheet bundle S0 by the spatula support member 252. Supported as possible.
The spatula support member 252 can be lowered to contact the sheet surface when the binding position of the sheet bundle S0 is located in the recess 250A, and can further press the sheet surface toward the recess.

  In this configuration, when the spatula 251 presses the sheet surface, the binding position of the sheet bundle S0 is bent and deformed toward the recess 250A. At this time, the spatula 251 presses the sheet surface at the center in the width direction of the bending base piece 1B corresponding to the center part in the longitudinal direction of the needle 1, so that the bending base piece 1B of the needle 1 as shown in FIG. Deforms downward.

  On the other hand, the portion of the sheet bundle S0 placed on the placement unit 250 near the side edge of the recess 250A is supported by the placement unit 250 to form a both-ends support beam shape, and is formed at both longitudinal ends of the needle 1. The corresponding bent piece portion 1A is deformed in a direction opposite to the bent base piece 1B. Thereby, a gap is formed between the bent base piece of the needle 1 and the sheet surface. When the sheet bundle S0 in which the gap is formed is moved in the direction in which the spatula 251 is detached, the operation moves to the operation of pulling out the needle 1.

  In the configuration shown in FIG. 11, a hook member 253 is disposed as a swingable needle removing means in the vicinity of the spatula 251, and is formed between the bent base piece 1 </ b> B of the needle 1 and the sheet surface by the spatula 251. The tip 1 enters the gap by swinging in the gap, and the needle 1 is pulled out by further swinging.

  In the above embodiment, since the deformation in the relative direction with the needle 1 can be obtained simply by pressing the binding position of the sheet bundle S0 toward the recess 250A, the configuration can be simplified.

On the other hand, in the above-described embodiment, a member for pulling out the needle 1 is used, but this member can be made unnecessary.
FIG. 12 shows a configuration in this case. In the figure, a spatula 251 used as a pressing member is used as a needle removing means.
That is, the spatula 251 is a member that forms a gap between the bent base piece 1B of the needle 1 and the sheet surface by pressing the binding position of the sheet bundle S0 toward the recess 250A. The needle 1 can be turned by moving the sheet bundle S0 as shown in FIG. 12C while maintaining the formation state.

  With such a configuration, even if the needle 1 is not lifted upwardly, it can be pulled out by utilizing the force in the shearing direction acting on the needle 1 in accordance with the movement of the sheet bundle S0.

In the configuration of the above embodiment, the needle 1 can be recovered at the extraction position by being extracted.
FIG. 13 shows a configuration in this case, and this diagram targets the configuration shown in FIG.
In FIG. 13, in the recess 250 </ b> A provided in a part of the placement unit 250, the collection unit 250 </ b> B of the needle 1 is disposed in communication with the recess 250 </ b> A.

  On the other hand, the spatula 251 is formed with an inclined surface 251A in which the needle 1 can be naturally dropped toward the collecting portion 250B at a portion where the needle 1 enters.

In this configuration, as described with reference to FIG. 12, when the needle 1 pulled out by the spatula 251 reaches the inclined surface 251A of the spatula 251, it naturally falls toward the collection unit 250B using the inclination. ing.
The collection part 250B can improve the maintainability such as making it easy to discard the collected needle 1 by making it a detachable case independent of the recess 250A.

Next, a description will be given of a fourth embodiment relating to the binding needle removing apparatus according to the present invention.
In the present embodiment, the deformation method of the needle 1 is different from the previous embodiments. That is, in the present embodiment, the center of the needle 1 in the longitudinal direction and the both ends are moved in the relative direction by pressing the sheet surface from the side of the folded piece 1A corresponding to the folded portion at the both ends in the longitudinal direction of the needle 1. It is designed to be deformed.

  FIG. 14 is a diagram showing the configuration in this case. In FIG. 14, the binding needle removing device 200 is in a state in which the bent base piece 1B located at the center in the longitudinal direction of the needle 1 is located below the sheet bundle S0. The removal operation of the needle 1 is performed.

  As a configuration for this purpose, the binding needle removing device 200 has a positioning for moving one end edge of the sheet bundle S0 toward the needle removal alignment position in a state where one end portion of the both ends in the longitudinal direction of the needle 1 is bent upward. The moving means 300, the binding processing moving means 302 that moves the sheet bundle S0 toward the needle pulling means 301 by pressing the needle at the binding position of the sheet whose edge is positioned, and the binding processing moving means 302. The needle guide member 303 that guides the center of the longitudinal direction of the needle 1 toward the position facing the needle pulling means 301 and the needle 1 binding the sheet bundle S0 face the needle pulling means 301 in the process of moving by A pressing unit 304 is provided that presses the sheet bundle S0 downward from one side of the needle 1 at a position so that the binding position of the sheet bundle S0 together with the needle 1 is curved downward.

The configuration of each part will be described below.
In FIG. 14, the positioning / moving means 300 abuts on the upper surface side of the sheet bundle S0 and moves the sheet bundle S0 toward the stopper 305 provided on one end edge side of the sheet bundle S0 as shown in FIG. A rotatable roller is used.

The needle removal means 301 is a spatula member having a tapered tip whose lifting stroke is adjusted by a screw rod 301B driven by a lifting motor 301A.
The needle removal means 301 can be moved up and down according to the position of the needle 1 in the height direction, and a gap formed between the needle 1 approached by the binding processing moving means 302 described later and the sheet surface. Can enter. The positioning of the needle removal means 301 with respect to the position in the height direction of the needle 1 is performed based on the detection result of the lift position by the needle removal detection sensor 311.

The binding processing moving means 302 is used to push and move one surface of the needle 1 to position the needle 1 at a position of a pressing means 304 described later, and to move the needle 1 and the sheet bundle S0 toward the needle pulling means 301. Means.
The binding processing moving means 302 is inserted into the sliding wheel 302A capable of pushing and moving the surface of the needle 1 opposite to the needle removing means 301 side on the bending base piece 1B side, and the axis of the sliding wheel 302A. The drive screw 02B loosely fitted to the slide wheel 302A and the drive motor 302C of the drive screw 302B can be transmitted so that axial movement can be transmitted without being integrated with the slide wheel 302A. I have.

The sliding wheel 302A has a dish shape in cross section, and a detection sector 302S corresponding to the position detection sensor 306 for determining the position where the needle 1 can be extracted by the needle extraction means 301 is partially provided in the circumferential direction. Is provided.
Although not shown in detail, the position detection sensor 306 has a configuration capable of detecting a position corresponding to the pressing means 304 and a position corresponding to the needle removing means 301 as the movement position of the sliding wheel 302A. These positions can be determined by distinguishing them by combinations of sensor positions and sector shapes.
When the detection sector 302S is detected by the position detection sensor 306, it is determined that the needle 1 has moved to a position where the needle extraction unit 301 can extract the needle 1. Further, at the time of double action, the time point when the detection by the position detection sensor 306 is completed is determined as the sliding start position of the sliding wheel 302A.

  The needle guide member 303 is a member for aligning the center position of the bent base piece 1B of the needle 1 and the center position of the needle pulling member 301, which is one of the functions of the inclined guide portion 202A shown in FIG. As shown in FIG. 15, the plan view shape from the wide guide surface to the narrow guide surface is the funnel-shaped guide member along the moving direction of the sheet bundle S0 pushed and moved by the sliding wheel 302A. In the vicinity of the position of the minimum width, the needle removing means 301 is opposed.

  On the other hand, in FIG. 14, the pressing means 304 is a striking lever attached via a spindle pin 304C at a position eccentric from the center of the pressure disk 304B connected to the rotation shaft of the pressure motor 304A. As shown, at the binding position of the sheet bundle S0, the sheet bundle S0 can be pressed by moving toward the exposed surface of the sheet that exists while the bent pieces 1A of the needle 1 face each other. .

  The pressing means 304 is configured to detect the pressing start position, that is, the initial position when the pressing is not performed, by the home position sensor 307. When the pressing operation is started and at the standby time, the home position sensor 307 shown in FIG. Is positioned at a position detected by.

As shown in FIG. 14, a pressure pad 308 is provided in the vicinity of the pressing unit 304 on the surface of the sheet bundle S0 on the side where the pressing unit 304 is disposed.
The pressure pad 308 is a pad having a film made of a fluororesin that can reduce the coefficient of friction with the sheet surface attached to the surface so that the sheet bundle S0 does not float during the pressing operation by the pressing unit 304. Has a function to hold down.

  In FIG. 14, reference numeral 309 indicates a spherical rotating roller, and the spherical rotating roller 309 is used as a sheet pressing member that can rotate without resisting movement of the sheet bundle S0 in the vertical and horizontal directions.

  In the binding needle removing apparatus 200 as described above, when the sheet bundle S0 is placed on the table 310, the roller used as the positioning moving unit 300 starts rotating, so that one end edge of the sheet bundle S0 is stopped by the stopper 305. The sheet bundle S0 is moved until it is knocked down.

When the edge of one end is positioned, the sheet bundle S0 is moved to a position where the bending base piece 1B of the needle 1 bound downward by the binding processing moving means 302 faces the pressing means 304. This movement is made possible by position detection of the detection sector 302S by the position detection sensor 306.
That is, when it is detected by a detection sensor (not shown) that the one end edge is stopped by the stopper 305, the drive screw 302B is rotationally driven by the drive motor 302C to move the sliding wheel 302A toward the position of the pressing means 304. Thus, one surface of the needle 1 is pushed by the sliding wheel and moves to a position facing the pressing means 304. The center position of the needle 1 is aligned with the needle removing means 301 in the guide member 303 during the movement process.

  FIG. 16 shows a state in which the needle 1 is located in the wide portion of the guide member 303, and when the needle 1 moves from this state to a position facing the pressing means 304, as shown in FIG. The needle 1 is positioned in the narrow width portion, and the pressing operation by the pressing means 304 is started.

  When it is detected by the position detection sensor 306 that the sliding wheel 302A has moved to a position where the needle 1 is opposed to the pressing means 304, the pressing means 304 is moved through the rotation of the pressure motor and the pressure disk 304B. As shown in FIG. 17, the sheet surface exposed between the bent pieces 1 </ b> A of the needle 1 is pressed to bulge the bent base piece 1 </ b> B located at the center in the longitudinal direction of the needle 1 downward. Thereby, the deformation | transformation of a relative direction is produced between a longitudinal direction both ends and a longitudinal direction center part.

  When the pressing unit 304 double-acts to the initial position, as shown in FIG. 17, the sheet bundle S0 is restored in shape, but the needle 1 remains plastically deformed. A gap is formed between the base piece 1B and the sheet surface.

When the home position sensor 307 detects that the pressing means 304 has double-acted, the sliding wheel 302A starts to move in the axial direction again, and the needle pulling means 031 moves to the corresponding position in the height direction of the needle 1. Positioned.
The needle 1 moves toward the needle removal means 301 by the movement of the sliding wheel 302A, so that the needle removal means 301 moves its tip into the gap, and the needle removal means 301 moves downward in this state. Accordingly, the needle 1 is extracted from the sheet bundle S0.

FIG. 17 shows a state in which the needle removing means 301 enters a gap formed between the bent base piece 1B of the needle 1 and the sheet surface.
The outer diameter of the sliding wheel 302A is set to a size that does not cause interference between the opposing surfaces of the minimum width of the guide member 303.

The operation procedure as described above is executed by the control system shown in FIG.
In FIG. 18, a controller 1000 that executes control of various motors and detection sensors is used for the control system of the binding needle removal apparatus 200, and the sliding wheel 304 </ b> A is targeted on the input side of the controller 1000. A home position center 307 for the position detection sensor 306 and the pressing means 304 and a needle removal detection sensor 311 for the needle removal means 301 are connected. On the output side, the positioning movement means 300 and the needle removal means 304 are connected. A lift motor 301 </ b> A for the target, a drive motor 302 </ b> C for the sliding wheel 302 </ b> A, and a driver for the pressure motor 304 </ b> A for the pressing means 304 are connected. In FIG. 18, driving targets are shown instead of drivers.
The operation procedure by the control system shown in FIG. 18 is as described above, and the contents are shown in FIG.

Next, a fifth embodiment relating to the binding needle removing apparatus according to the present invention will be described.
Unlike the above-described embodiment, the present embodiment is characterized in that the needle can be easily removed by cutting and removing a folded piece corresponding to a part of the needle, which is a folded piece.

20A and 20B are schematic views showing the overall configuration of the binding needle removing apparatus 200 according to this embodiment, where FIG. 20A is a plan view and FIG. 20B is a front view.
In FIG. 20, the binding needle removing device 200 is configured to bend the needle 1 of the sheet bundle S0 by releasing the upper table 401 disposed to face the upper surface of the sheet bundle S0 and a part of the placement surface of the sheet bundle S0. A lower table 402 that can be moved up and down that exposes one end, a cutter table 404 that is mounted with a cutter unit 403 that can be moved up and down and disposed opposite the opening of the lower table 402, and provided on the cutter table 404 side. And a pressing means 405 capable of moving up and down.

Details of each part will be described below.
As shown in FIG. 21, the lower surface of the upper table 401 has a flat surface and faces the cutter unit 403 when a part of the needle 1 is cut by the cutter unit 403. As shown by the symbol “B”, the backing portion for the needle 1 and a concave shape in which the bent base piece 1B positioned at the center in the longitudinal direction of the needle 1 can enter by facing the pressing means 405 and being pressed by the pressing means 405. As shown by the reference numeral “C”, the gap forming portion formed with the portion B1 and a rotatable spatula member provided in the needle pulling means 400 enter and bend the base piece located in the longitudinal center portion of the needle 1 There is provided a needle removal portion having an opening portion C1 that is used when a spatula member is caused to enter a gap formed between 1B and the sheet surface.
Further, on the upper surface of the upper table 401, a pressing unit 400 is mounted in the vicinity of the needle removal portion indicated by the reference numeral “C”.

  The upper table 401 can be slid by the moving screw 401A so that any one of the above-described parts “A” to “C” faces the needle 1 as necessary. The amount of rotation and the direction of rotation are set by the drive motor 401B.

In the upper table 401, the positions of the respective parts indicated by reference numerals “A” to “C” are identified by the identification parts PA to PC provided corresponding to the respective parts by the table position detection sensor indicated by reference numeral S1 in FIG. It is performed by detecting.
Accordingly, the movement of each part indicated by reference signs “A” to “C” on the upper table 401 is based on the work contents for the needle 1 in response to the rotation control of the upper table drive motor 401B being executed. This is continued until the position 401 is detected by the table position detection sensor S1.

The lower table 402 is a member that can be moved up and down by an eccentric cam 402A that is rotationally driven by a lower table drive motor 402A. The upper surface of the loaded sheet bundle S0 can be brought close to the lower surface of the upper table 401. ing.
When the sheet bundle S0 comes into close contact with the lower surface of the upper table 401 and comes into contact with the “A” portion on the lower surface of the upper table 401, the backing state when cutting a part of the needle 1 Is obtained, a state is obtained in which the bent base piece 1B located at the center in the longitudinal direction of the needle 1 is deformed in a relative direction with respect to the bent pieces 1A located at both ends, When facing the “C” portion, the needle 1 is pulled out by the needle pulling means 400.

  The lower table 402 is a member that can slide in conjunction with the base table 406. The base table 406 slides along the axis of the drive screw 406B that is interlocked with the base drive motor 406A, so that a cutter, which will be described later. The unit 403 and the pressing means 405 can be aligned with the binding position of the sheet bundle S0.

  The cutter unit 403 disposed to face the open portion of the lower table 402 is mounted on the cutter table 404, and the cutter table 404 is inserted into a support wall provided on the base table 406 (see FIG. 20). It is provided so that it can be moved up and down by an eccentric cam 404B provided on the rotating shaft 404A.

  The eccentric cam 404B passes through the thickness direction of the sheet bundle S0 among the bent pieces 1A in which the rising stroke obtained by the maximum outer diameter portion is located at both ends in the longitudinal direction of the needle 1, and then is folded back to be substantially the same as the sheet surface. In order to obtain a state in which a parallel portion (a portion indicated by reference numeral 1C in FIG. 21) can be cut, the cam profile is set so as to correspond to an amount capable of positioning the rotary cutters 403B and 403B ′ using a diamond cutter, which will be described later. ing.

The eccentric cam 404B is rotated continuously or intermittently so that the amount of cut when the rotary cutters 403B and 403B 'cut the folded part 1C of the needles 1C, that is, the so-called feed amount, can be adjusted. Rotation can be performed. For this reason, a pulse motor is used as the cutter table drive motor 404C (FIG. 20) for driving the rotating shaft 404A.
Note that the feed amount limit detection of the rotary cutters 403B and 403B ′ (see FIG. 21) at the time of cutting the needle 1 is performed by the movable contact sensor denoted by reference numeral 407 in FIG.

On the other hand, as shown in FIG. 21, the cutter unit 403 includes a pair of rotary cutters 403B and 403B ′ provided on a feed screw 403A in which the lead direction is set in a direction opposite to the axial center. Yes.
As shown in FIG. 20, the feed screw 403A is used as a member that can adjust the relative position of the rotary cutters 403B and 403B ′ by setting the rotation amount and the rotation direction by the cutter moving motor 403C.

  Below the rotary cutters 403B and 403B ′, as shown in FIG. 22, a recovery unit 408 for receiving chips and chips of the cut needle 1 is provided. Considering that the material used is a metal, a magnetic material capable of preventing scattering to the periphery is used. The collection unit 408 can improve maintenance performance such as disposal by using a case that is detachable from the binding needle removing device 200, for example.

In FIG. 20, the rotary drive mechanism of the rotary cutters 403B and 403B ′ uses a cutter drive motor 409 and pulleys mounted on the rotary shafts of the rotary cutters 403B and 403B ′. A belt is wound around in the shape of a figure 8 to rotate the cutters in opposite directions.
The rotation direction between the rotary cutters 403B and 403B ′ is a direction in which the portion 1C that is folded back by the needle 1 and parallel to the sheet surface can be cut from the outside toward the inside. Thereby, it can cut | disconnect so that swarf does not scatter to a peripheral part.

  In FIG. 20, a pressing means 405 is a member that can be moved up and down by a pressure cam 405B using an eccentric cam interlocked with the pressure motor 405A, and the needle is moved at the binding position in the sheet bundle S0 by the push-up operation of the pressure cam 405B. 1, the bent base piece 1B located at the center in the longitudinal direction is bulged and deformed in a direction relative to both ends in the longitudinal direction. The pressing operation by the pressing unit 405 will be described later with reference to FIG.

  On the other hand, as shown in FIG. 23, the needle removing means 400 mounted on the upper surface of the upper table 401 in FIG. 20 is supported at a position eccentric with respect to the rotating disk 400B driven by the needle removing motor 400A. A spatula-like member 400C is provided, and after entering the gap formed between the needle 1 and the sheet surface, as shown by an arrow in the figure, when the needle 1 is eccentrically rotated, The sheet can be extracted from the sheet bundle S0.

In the embodiment having the above-described configuration, as shown in FIG. 22, as a step before forming a gap between the bent base piece 1 </ b> B located in the longitudinal center of the needle 1 and the sheet surface, the needle 1 Of these, the cutting operation of the portion 1C which is folded back and parallel to the sheet surface is executed.
That is, as shown in FIG. 22A, the “A” portion of the upper table 401 is positioned at the binding position of the sheet bundle S0, and the cutter unit 403 moves upward in conjunction with this operation.

  When the cutter unit 403 moves upward, the rotary cutters 403B and 403B 'are sent toward the needle 1 while rotating, thereby cutting a part 1C of the needle 1. The rotary cutters 403B and 403B 'reciprocate while receiving feed to increase the cutting amount of a part 1C of the needle 1.

  When a part of the cut needle 1 falls as chips, it is collected by the collection unit 408, while the rotary cutters 403B and 403B 'are double-moved to the initial position (FIG. 22B).

When a part 1C of the needle 1 is cut, the needle 1 is folded back and the portion parallel to the sheet surface is removed, so that the resistance at the time of withdrawal is reduced.
After cutting the needle 1, as shown in FIG. 22C, the upper table 401 moves so that the B portion having the concave portion B1 is opposed to the binding position of the sheet bundle S0.

When the concave portion B1 is opposed to the binding position, the pressing means 405 starts to operate, and is pressed from the lower surface side of the sheet bundle S0 facing the central portion of the bending base piece 1B of the needle 1 together with the sheet bundle S0. The bent base piece 1B is bulged so as to protrude upward in accordance with the shape of the concave portion B1.
As a result, the needle 1 deforms the bent base piece 1B located at the center in the longitudinal direction relative to the bent pieces 1A located at both ends in the longitudinal direction.
When the pressing operation is completed, the pressing means 405 double-acts to the initial position. As a result, the shape of the sheet bundle S0 is restored while the needle 1 remains plastically deformed, so that a gap is formed between the bent base piece 1B of the needle 1 and the sheet surface as shown in FIG. Is done.

  As shown in FIG. 22 (E), the spatula-shaped member of the needle pulling means 400 enters the gap, and the needle pulling means 400 ascends in the state of entering, so that the needle 1 is in the sheet bundle S0. Extracted from. At this time, since the needle 1 does not have the bent piece 1A, the sheet bundle S0 is not held. As a result, the sample is extracted with almost no resistance during extraction.

The control related to the above operation is executed by the control unit shown in FIG.
In FIG. 24, a controller 1001 for executing control of various motors and detection sensors is used for the control system of the binding needle removing apparatus 200. The input side of the controller 1001 includes the table position detection sensor S1. Sensors for detecting the amount and direction of rotation of each motor (shown as sensors in the figure) are connected, and on the output side, a needle removal motor 400A for the needle removal means 400, an upper table Upper table drive motor 401B targeted for movement of 401, lower table drive motor 402A targeted for movement of lower table 402, cutter table drive motor 404 targeted for movement of cutter table 404, and lifting / lowering operation of pressing means Press motor 405A, base drive motor 406A, rotary cutter 403B 403B 'rotation of the cutter driving motor 409 intended for the driver is connected. In FIG. 24, a motor to be controlled is displayed instead of the driver.
The operation procedure in the control unit 1001 shown in FIG. 24 is as described above, and the contents thereof are shown in FIG.

In the configuration as described above, prior to the removal operation of the needle 1, the portion 1C that is folded back on the needle 1 and embraces the back surface of the sheet bundle S0 can be cut off. The needle 1 can be easily extracted by reducing the resistance. Accordingly, when the sheet is prevented from being deformed due to an increase in resistance at the time of extraction and applied again to the reading apparatus as a document, it is possible to prevent a jam from occurring in a state where there is no conveyance resistance.
In addition, the process from the partial cutting process of the needle 1 to the gap formation and extraction is automated, and in particular, a gap can be reliably formed between the needle and the sheet surface. There is no need to pry it open by needle removal means. As a result, it is possible to prevent the sheet from being damaged due to the orphan opening.

DESCRIPTION OF SYMBOLS 1 Needle 1A Longitudinal both ends 1B Longitudinal center part 10 Upper side press member 11 Lower side press member 100 Binding needle removal apparatus 102 Needle extraction means

Japanese Utility Model Publication No. 62-154445 JP 09-197749 A Japanese Patent No. 3236376 JP 2000-24668 A

Claims (15)

An apparatus for removing the needle from the bound sheet bundle by inserting a needle removing means capable of extracting the needle between the needle and the sheet surface at the binding position of the sheet bundle bound by the needle,
Before insertion of the needle removal means, the longitudinal ends of the needle and the center are deformed in a relative direction so that the central portion of the needle bulges against both ends, so that the center portion and the sheet surface are A binding needle removing device comprising a mechanism for forming a gap in the needle. As a mechanism for deforming the central portion of the needle in the longitudinal direction relative to the both ends,
The binding needle removing device according to claim 1, wherein a member capable of simultaneously pressing the center and both ends of the needle in the relative direction is used.   As the relative direction, the center in the longitudinal direction of the needle is a pressing direction that deforms from the lower side to the upper side, and both longitudinal ends of the needle are the pressing direction that deforms from the upper side to the lower side. The binding needle removing device according to claim 1 or 2. As a member that deforms the center in the longitudinal direction and both ends of the needle in a relative direction,
A deforming means provided on the outer peripheral surface with a deformation generating portion that is movable while facing the needle positioned inside;
The deformation occurrence portion of the deformation means is formed by a center portion in the longitudinal direction by pressing the both ends in the longitudinal direction by changing the width between the surfaces facing the both ends in the longitudinal direction of the needle from the wide to the narrow along the moving direction. The binding needle removing device according to claim 1, wherein the binding needle removing device is configured by a guide portion that bulges in a direction to float from the surface of the sheet.   The guide portion is opposed to both ends in the longitudinal direction of the needle, and is provided on the outer peripheral surface of the rotatable roller. When the narrow width portion is opposed to both ends in the longitudinal direction of the needle, The binding needle removing device according to claim 4, wherein a claw member capable of entering a gap formed by bulging the center in the longitudinal direction of the needle is provided.   6. The binding needle removing device according to claim 5, wherein the claw member is set to have a lower coefficient of friction with the sheets than the sheets. An apparatus for removing the needle from the bound sheet bundle by inserting a needle removing means capable of extracting the needle between the needle and the sheet surface at the binding position of the sheet bundle bound by the needle,
A recess provided in a part of the sheet placement surface, and a pressing member capable of pressing the vicinity of the binding position of the sheet toward the recess when the recess has the binding position of the sheet. ,
When the binding position is opposed to the recess, the pressing member presses the binding position surface of the sheet against the needle to form a gap between the needle and the sheet surface, A stapling needle removing device, wherein a needle removing means is inserted into the gap.   The binding needle according to claim 7, wherein the pressing member includes a spatula part that can enter a gap between the needle and the sheet surface at the tip of the pressing member. Removal device.   The pressing member used as the needle pulling means is provided so as to be movable in the thickness direction of the sheet bundle at a position facing the recess, and the needle is moved when the sheet moves in a direction perpendicular to the thickness direction. 9. The binding needle removing device according to claim 8, wherein the binding needle removing device is pulled out from the sheet.   The recess is provided with a removal portion for collecting the removal needle, and the needle pulled out by the pressing member in the process of moving the sheet in a direction perpendicular to the thickness direction falls into the recess and is collected. The binding needle removing device according to claim 9. An apparatus for removing the needle from the bound sheet bundle by inserting a needle removing means capable of extracting the needle between the needle and the sheet surface at the binding position of the sheet bundle bound by the needle,
Positioning movement means for moving one end edge of the sheet toward the needle removal alignment position in a state in which one end portion of the both ends in the longitudinal direction of the needle is bent upward;
A binding processing moving means for pressing the needle at the binding position of the sheet, the edge of which is positioned, and moving the sheet toward the needle pulling means;
A needle guide member that guides the position of the center in the longitudinal direction of the needle toward the position facing the needle removing means in the process of moving by the binding processing moving means;
By pressing the sheet downward from one side of the needle at a position where the needle binding the sheet faces the needle removing means, the binding position of the sheet is curved downward and convex together with the needle. Pressing means,
After the sheet and the needle are curved in a downwardly convex shape by being pressed by the pressing means, the sheet surface and the needle are recovered by restoring the shape of the sheet by returning the pressing means to the initial position. A binding needle removing device characterized in that a gap through which the needle removing means can enter is formed between the two.   The positioning and moving means is a roller that is in contact with the sheet surface and is rotatable in one direction. The binding processing moving means is on a surface of the needle opposite to the surface facing the needle removing means. A sliding member that abuts and can be moved back and forth with respect to the needle pulling means is used, and the entering guide member is narrowed in the process of moving the sheet toward the needle pulling means, and the needle bending portion A convex guide having a funnel-like shape in plan view that can be opposed to the head is used, and the pressing means is an arm member that can press the surface of the sheet in an open space between the bent pieces of the needle. The binding needle removing device according to claim 11. An apparatus for removing the needle from the bound sheet bundle by inserting a needle removing means capable of extracting the needle between the needle and the sheet surface at the binding position of the sheet bundle bound by the needle,
An upper table disposed opposite the upper surface of the sheet bundle;
A lower table in which a part of the facing surface of the sheet bundle is opened and a bent end portion of the needle at the binding position of the sheet bundle can be exposed;
A cutter table equipped with a vertically movable cutter unit disposed opposite to the open portion of the lower table;
A pressing member that is provided on the cutter table side and can be moved up and down, and at the time of rising, presses the binding position of the sheet from the lower side to the upper side to bend and deform the sheet to have an upward convex shape; and
Needle removal means provided on the upper table side,
The upper table is provided so as to be movable in parallel with the surface of the sheet bundle, and a backing surface facing the cutter unit along the moving direction, a concave surface facing the pressing member, and the needle removing means, An opposing penetrating portion, and before the needle is pulled out by the needle pulling means, the cutter unit removes the bent piece end of the needle, and then the pressing member removes the sheet from the concave surface of the upper table. After the needle is pressed and deformed, the staple is removed by the needle pulling means in a state where a gap is formed between the sheet surface and the needle by returning the initial position of the pressing member. apparatus.   The binding needle removing device according to claim 13, wherein the needle removing means has a configuration capable of rotating so as to enter a gap formed between the needle and the sheet surface.   An image forming apparatus using the binding needle removing device according to claim 1.

Images