JP2014217942A - Sheet bundle cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet bundle cutting device of a simple structure which can easily cut a sheet bundle with a slight force by an operator.SOLUTION: A sheet bundle cutting device comprises: a pressing tool for pressing a sheet bundle in a cut direction during cutting thereof; a tabular cutting blade which cuts the sheet bundle while reciprocating in a cut width direction; an energization part which always energizes the pressing tool and the cutting blade in the cut direction; a support part which supports the pressing tool and the cutting blade against an energization force from the energization part; and an operation part for releasing support of the pressing tool and the cutting blade by the support part. The operation part has a handhold part for reciprocating the support part, and an engaging part for engaging the support part with the handhold part. The handhold part is provided with a force point of a lever, the engaging part is provided with a point of support of the lever, and the support part is provided with a point of action of the lever.

Description

  The present invention is not limited to the cutting of the edge of one sheet material, for example, a booklet that has been subjected to punching, saddle stitching, center folding, etc. The present invention relates to a sheet bundle cutting device for cutting a small edge or a margin of a sheet bundle in which a plurality of sheet materials are laminated, such as a laminated sheet including a resin material and a sealing material.

  For example, the cutting machine disclosed in Utility Model Registration No. 3179943 (Patent Document 1) and the cutting machine disclosed in Japanese Utility Model Publication No. 62-28393 (Patent Document 2) are both human (operator). The handle is manually operated to cut the above-described sheet material or sheet bundle with human power.

  In the cutting machine disclosed in Patent Document 1, the cutting blade 15 is always urged in the direction opposite to the cutting direction (anti-cutting direction) by the tension spring 19, and the press plate 16 is also always applied in the anti-cutting direction by the tension spring 19. It is energized. When the operator rotates the handle 7, the lever handle 8 is rotated, the cutting roll 12 is pressed, and the cutting blade 15 is inclined in the cutting direction in accordance with the movement of the blade stopper bolt 17 along the inclined hole 21. To do. At the same time, the press plate 16 moves in the cutting direction against the urging force of the tension spring 19 and presses the paper placed on the table 1. By such a series of operations, the sheet is cut by the cutting blade 15 that is skewed like a butterfly cutter.

  Moreover, in the cutting device in Patent Document 2, the cutting blade 13 is always urged in the anti-cutting direction by the elastic member 22, but the paper pressing plate 18 is always pressed in the cutting direction by the elastic member 25. When the operator rotates the handle 6, the frame member 4 is rotated, the roller 7 is pressed, and the cutting blade 13 moves along the inclined hole 12 of the guide pulley 14, that is, skews in the cutting direction. At the same time, the paper pressing plate 18 receives the pressing force of the elastic member 25 and shifts in the cutting direction to press the paper sheets placed on the base plate 1. By such a series of operations, the paper sheet is cut by the cutting blade 13 that is skewed like a butterfly cutter.

  When the above-described two cutting devices (the cutting machine in Patent Document 1 and the cutting machine in Patent Document 2) are compared, the normal urging directions of the pressing tools (press plate 16 and paper pressing plate 18) are contrary to each other, but the cutting blade The configuration in which (the cutting blade 15 and the cutting blade 13) are always urged in the anti-cutting direction, that is, the direction away from the sheet bundle is the same. Therefore, in any of the cutting apparatuses, when the operator manually operates the handle, that is, manually cuts the sheet bundle, the operator resists the biasing force that biases the cutting blade to the standby position. It is necessary to apply at least a force exceeding the load (cutting load) required for cutting the sheet bundle (cutting load) and the load necessary for cutting the sheet bundle (cutting load). Moreover, in the cutting machine in patent document 1, it is necessary to apply the load (pressing tool moving load) for resisting the urging force by the tension spring 19.

Utility Model Registration No. 3179943 Japanese Utility Model Publication No. 62-28393

  As described above, in the conventional cutting device, the required cutting load is a force exceeding the load obtained by adding the cutting blade moving load and the cutting load, and depending on the configuration of the cutting device, it is necessary to add the pressing tool moving load as well. Become. The cutting blade movement load and pressing tool movement load are usually set large within the range that the operator can resist to prevent the operator's safety and to prevent unexpected and rapid movement of the cutting blade and pressing tool. ing. Further, the cutting load varies greatly depending on conditions such as the thickness and hardness of the material to be cut. For this reason, it is difficult for the operator who operates by hand to correctly determine in advance whether or not the required load for cutting the material to be cut can be applied. In some cases, the material to be cut may be poorly cut, such as fuzzing, tearing, or uncut parts.

  It is an object of the present invention to prevent an operator's ability from affecting the success or failure of cutting a sheet bundle when an operator tries to cut a sheet bundle by operating a cutting device. It is an object of the present invention to provide a sheet bundle cutting device capable of easily cutting a sheet bundle even by an operator, that is, capable of cutting the sheet bundle with a slight force.

  The present inventor has studied in detail the conventional biasing configuration of the cutting blade and the pressing tool and the support configuration against the biasing, and when the cutting blade and the pressing tool are always biased in the cutting direction, Focusing on the fact that it is no longer necessary to apply the cutting blade movement load and the pressing tool movement load, a configuration for easily urging (execution of support) and loosening (release of support) the cutting blade and the pressing tool is found. The present invention has been reached.

  That is, the present invention provides a pressing tool for pressing the sheet bundle in the cutting direction at the time of cutting, a plate-shaped cutting blade for cutting the sheet bundle while reciprocating in the cutting width direction, the pressing tool, and the cutting blade A biasing portion that constantly biases the cutting tool in the cutting direction, a support portion that supports the pressing tool and the cutting blade against the biasing force of the biasing portion, the pressing tool by the support portion, and An operating part for releasing the support of the cutting blade, the operating part engaging with the clue part for reciprocating the support part and engaging the support part with the clue part The lever is provided with a force point of the lever, the fulcrum of the lever is provided on the engaging portion, and the point of action of the lever is provided on the support portion. This is a sheet bundle cutting device.

In this invention, it is preferable to have a standby stopper for locking the clue part at the standby position.
Moreover, it is preferable to have a stopper at the time of cutting for locking the clue part at a predetermined position while the support of the pressing tool and the cutting blade by the support part is released.

  Preferably, the clue part is provided with two release parts at a distance at which simultaneous operation with one hand is not possible, and the clue part is made movable by simultaneous operation of the two release parts.

The reciprocating movement of the cutting blade in the cutting width direction can be started based on the movement information of the pressing tool in the cutting direction.
The reciprocating movement of the cutting blade in the cutting width direction can be stopped based on the movement information of the cutting blade in the cutting direction.

Moreover, it is preferable that the cutting blade according to the present invention has a plurality of protruding blade portions on one edge in the cutting direction side, and the protruding blade portions are formed with ridgelines that allow piercing and drawing. .
Moreover, it is preferable that the said cutting blade has a bottom part by which one part or all part was formed in linear form between the said adjacent projecting blade parts.

According to the present invention, it is possible to obtain a sheet bundle cutting device that can cut a sheet bundle by an operation by a slight force of an operator. Therefore, even if the operator's ability is not large, that is, the sheet bundle can be easily cut even if the generally incompetent person is the operator, the quality of the cut due to the lack of ability of the operator's person Cutting defects such as lowering, tearing, and uncut parts are prevented.
In addition, according to the present invention, since the plate-shaped cutting blade can be configured to cut the sheet bundle while reciprocating in the cutting width direction, it is possible to cut a thick sheet bundle that was difficult to cut by human power. become.

It is a figure which shows the external appearance of an example (cutting device A) of the sheet | seat bundle cutting device of this invention. It is a component block diagram of the cutting device A. It is a figure for demonstrating the structure which urges | presses the pressing tool and the cutting blade 15 in a cutting direction in the cutting device A. FIG. It is a figure which shows the principal part of the cutting device A when it exists in a standby state from a side surface. It is a figure which shows the principal part of the cutting device A in the state in the middle of cutting | disconnection from a side surface. It is a figure which shows the principal part of the cutting device A when it is in the state of a cutting completion from a side surface. It is an example of the cutting blade which concerns on this invention, Comprising: It is the elements on larger scale which show the protrusion blade part which is the principal part, and a linear bottom part.

  The sheet bundle cutting device according to the present invention roughly includes a pressing tool, a cutting blade, a biasing portion, a support portion, and an operation portion. Specifically, the pressing tool has a function of pressing the sheet bundle in the cutting direction during cutting, and the cutting blade is plate-shaped and has a function of cutting the sheet bundle while reciprocating in the cutting width direction. The biasing portion has a function of always biasing the pressing tool and the cutting blade in the cutting direction, and the support portion has a function of supporting the pressing tool and the cutting blade against the biasing force of the biasing portion. And the operation unit has a function of releasing the support of the pressing tool and the cutting blade by the support unit. When the operator operates the operation unit to release the support of the pressing tool and the cutting blade, the sheet bundle cutting operation is started. Moreover, after completion | finish of a cutting | disconnection, an operator can return to the standby state before a cutting | disconnection start by operating the said operation part and supporting the said pressing tool and the said cutting blade again.

In the present invention, the structural relationship between the support portion and the operation portion is particularly important.
The support part intends a part, member, assembly part, or mechanism part that can support the pressing tool and the cutting blade against the urging force of the urging part. Moreover, you may comprise in a support part so that support of a pressing tool and support of a cutting blade may be performed separately, respectively. The support part in the present invention can sufficiently resist the urging force from the standby state before cutting to the start of the cutting operation. Further, when the operator operates the operation unit, the function of the support unit causes the pressing tool to resist the urging force of the urging unit from immediately after the start of the cutting operation until the start of pressing the sheet bundle by the pressing tool. The support can be gradually relaxed, and at the same time, from the start of the cutting operation until the start of cutting the sheet bundle by the cutting blade, the support of the cutting blade is gradually relaxed while resisting the biasing force by the biasing portion. be able to. As described above, the pressing tool and the cutting blade can be cut only by the operator applying a slight force to the operation unit by the action of the support unit against the urging force of the urging unit triggered by the operation of the operation unit. It is moved in the starting direction (cutting start direction).

  An operation part is a part which an operator operates, and as above-mentioned, the component, member, assembly part, or mechanism part which can cancel | release the support of the pressing tool and cutting blade by a support part is intended. In addition, the operation part is roughly divided into a clue part and an engagement part, the clue part has a function of reciprocating the support part via the engagement part, and the engagement part operates the clue part. It has an engaging function or a connecting function for reciprocating the support part by transmitting the mechanical movement generated by doing so to the support part. By operating the clue part that the operator has in the operation part and starting the support part that engages the clue part via the engagement part, the support of the pressing tool and the cutting blade is released, The sheet bundle cutting operation is started. Further, when the operator operates the clue part and starts the support part in the opposite direction (direction to return to the original position), the pressing tool and the cutting blade are supported again.

  Moreover, the effect | action of the support part with respect to the urging | biasing force of the urging | biasing part mentioned above is specifically obtained by adding the function of a lever in the structural relationship between a support part and an operation part. That is, the clue part has a lever power point, the engagement part has a lever fulcrum, and the support part has a lever action point. Due to the relationship between the support portion having the lever function and the operation portion, the force applied by the operator to the clue portion is amplified, so that the support portion can be easily started with respect to the biasing force of the biasing portion. it can. Therefore, when starting the cutting, the operator applies a slight force that weakens the urging force of the urging unit in order to start the pressing tool and the cutting blade in the direction in which the urging is relaxed, that is, the cutting start direction. In addition, it is only necessary to release the support of the pressing tool and the cutting blade by the support portion.

  On the other hand, since it is not easy to move the clue part with the leverage point of the lever from the side of the support part where the lever action point is located by the biasing force of the standard size by the biasing part, it is supported depending on the biasing force by the biasing part. The part is not easily started, and the pressing tool and the cutting blade are supported against the biasing force. In addition, it is preferable to provide a standby stopper for locking the clue portion at a predetermined position while the pressing tool and the cutting blade are supported by the support portion and set in a standby state. Further, when returning the pressing tool and the cutting blade released from the support to the standby position before the start of cutting, the operator starts the pressing tool and the cutting blade in a direction in which the urging portion is tensioned, that is, in the standby position direction. In addition, it is only necessary to apply a force to act on the lever to the clue part and to support the pressing tool and the cutting blade by the support part. Since the force required for the operation is equivalent to the force that causes the lever to act, the force can be small.

According to the sheet bundle cutting device of the present invention having the above-described configuration, in the standby state before the start of cutting, the operator starts the clue portion of the operation portion, and the movement by the clue portion is supported via the engagement portion. When the support part is moved by transmitting to the pressing part, the pressing tool and the cutting blade supported by the supporting part start to move in the cutting direction, and the support is released at a predetermined position during the movement, and the pressing tool becomes a sheet bundle. Thus, a series of cutting operations can be performed, in which the sheet bundle is pressed when reaching the position, and the cutting of the sheet bundle is started when the cutting blade reaches the sheet bundle. In addition, after the end of cutting, when the operator operates the direction of returning the clue part of the operation part to the standby position, the cutting blade and the pressing tool are again supported by the support part against the urging force of the urging part. Can be. At this time, since the force required for the operation of the operator can use the lever function in the configuration relationship between the operation unit and the support unit, a small force (minor force) enough to move the lever may be applied.
As described above, according to the present invention, it is possible to obtain a sheet bundle cutting device that can cut a sheet bundle with a slight force applied by an operator by hand. Therefore, even if the operator's ability is not large, that is, the sheet bundle can be easily cut even if the generally incompetent person is the operator, the quality of the cut due to the lack of ability of the operator's person Cutting defects such as lowering, tearing, and uncut portions can be prevented.

Next, a preferred configuration in the present invention will be described.
In the present invention, it is preferable to have a standby stopper for locking the clue portion at the standby position as described above. If there is a standby stopper, the operator operating the sheet bundle cutting device returns the clue unit to the standby position before starting cutting against the urging force of the urging unit, and then the cue unit in the standby position starts cutting. Unsafe movement that moves in the wrong direction can be prevented.

  It is preferable that the operation part has a stopper at the time of cutting for locking the clue part at a predetermined position while the support of the pressing tool and the cutting blade by the support part is released. If there is a stopper at the time of cutting, move the limit position of the clue part in the cutting start direction (bottom dead center of the clue part) to the limit position of the cutting blade movement in the cutting direction (bottom dead center of the cutting blade) Since it can determine correspondingly, the unsafe movement | movement which a clue part moves accidentally irrespective of an operator's operation can be prevented. Further, the operator starts the cutting operation by moving the clue part to the bottom dead center, and the operator does not need to keep holding the clue part during the subsequent cutting. As the stopper at the time of cutting, mechanical means such as mechanical parts can be used, or electrically controlled means based on movement information by detecting the position of the clue part or the cutting blade can be used.

  The clue part of the operation part is provided with two release parts for releasing the support of the pressing tool and the cutting blade by the support part at a distance that cannot be operated simultaneously by one hand of the operator. It is preferable that the clue unit is moved by an operation, and the clasp unit is moved thereafter to release the support of the pressing tool and the cutting blade by the support unit. If either one of the two release parts provided in the clue part is released, the clue part becomes non-movable and it becomes impossible to start cutting after releasing the support of the pressing tool and the cutting blade. Therefore, for example, an operation such as grasping the two release parts with both hands at the same time is performed, and the clue part made movable by this is moved to release the support of the pressing tool and the cutting blade by the support part. The operator cannot put his hands on the pressing tool and the cutting blade, and can prevent the operator's fingers from being cut.

  In the present invention, the cutting blade has a function of cutting the sheet bundle while reciprocating in the cutting width direction as described above. For this reason, it is preferable to start the reciprocating movement of the cutting blade in the cutting width direction based on the movement information of the pressing tool in the cutting direction. For example, the pressing of the sheet bundle by the pressing tool is completed for the reciprocating movement of the cutting blade. Since it can be started later, it can contribute to energy saving by preventing unnecessary operation of the cutting blade. Or the structure which stops the reciprocation to the cutting width direction of a cutting blade based on the movement information to the cutting direction of a cutting blade is also preferable, and can contribute to energy saving similarly.

  Moreover, it is preferable that the cutting blade has a plurality of protruding blade portions on one edge on the cutting direction side, and the protruding blade portions are preferably formed with ridge lines that allow piercing and cutting, and further adjacent to each other. It is preferable that part or all of the protruding blade portions has a bottom portion that is formed linearly. A cutting blade having a cutting edge with such a shape can extend the number of possible cuttings (cutting life) while maintaining the required cutting time within a predetermined range, so the frequency of cutting blade replacement can be reduced and the service life can be increased. This can contribute to the reduction of costs required for making and cutting.

Hereinafter, the sheet bundle cutting device of the present invention will be described with reference to the drawings as appropriate, taking an example embodiment.
FIG. 1 shows the appearance of an example of a sheet bundle cutting device of the present invention (hereinafter referred to as cutting device A), FIG. 2 shows a component configuration diagram of the cutting device A, and FIG. The structure which biases the cutting blade 15 to a cutting | disconnection direction is shown. In FIG. 3, in order to clearly show the configuration related to the urging portion, the description of parts such as the covers 3 and 4 is omitted, and a part thereof is illustrated as a cross section. 4 shows a main part when the cutting apparatus A is in a standby state before starting cutting, FIG. 5 shows a main part when the cutting apparatus A is in the middle of cutting, and FIG. The main part when it is in the state of completion is shown from the side. Moreover, in FIG. 7, the protrusion blade part and the linear bottom part which become the principal part of one Embodiment of the cutting blade in this invention are shown. The sheet bundle 48 shown in FIG. 4 to FIG. 6 is a bundle or booklet formed by simply laminating or folding a plurality of sheet materials on which image printing or the like has been performed. Is intended.

  1 to 6 includes a pressing tool 34 for pressing the sheet bundle 48 in the cutting direction at the time of cutting, and a plate-shaped cutting for cutting the sheet bundle 48 while reciprocating in the cutting width direction. The blade 15, the “urging portion” that constantly urges the pressing tool 34 and the cutting blade 15 in the cutting direction, and supports the pressing tool 34 and the cutting blade 15 against the urging force of the “biasing portion”. And the “operation part” for releasing the support of the pressing tool 34 and the cutting blade 15 by the “support part”. The “operation unit” in the cutting apparatus A includes a “clue unit” for reciprocating the “support unit”, and an “engagement unit” for engaging the “support unit” with the “clue unit”. The “clue portion” is provided with a lever force point, the “engagement portion” is provided with a lever fulcrum, and the “support portion” is provided with a lever action point. The main part having the pressing tool 34, the cutting blade 15 and the cutting blade driving mechanism is covered with two covers 3 and 4 for the safety of the operator, and the motor 20 for driving the cutting blade 15. ON / OFF switch 11 for energization, a shutter 41 that covers the cutting edge of the cutting blade 15 so that an operator's fingers do not touch, brackets 42 and 43 for attaching the shutter 41 to the base 1, and side plates 44 and 45. ing.

  In addition, the part related to the placement of the sheet bundle 48 includes a base 1 having a sheet bundle placement surface, a guide 9 for positioning one side in the width direction (cutting width direction) of the sheet bundle 48, and a sheet bundle longitudinal direction. The guide 10 is provided. The guide 9 is fixed to the base 1, and the guide 10 is attracted to the base 1 by a magnet 47. Further, at the end of cutting, the cutting edge 15 can be received by the cradle 13, and the cradle 13 is fixed to the base 1 by the cradle presser 2. In addition, it has four adjustable feet for stably supporting the base 1 and a jack 12 for power connection.

(Operation section)
The operation unit related to the cutting and standby operation has a function of releasing the support of the pressing tool 34 and the cutting blade 15, and has a function of supporting the pressing tool 34 and the cutting blade 15 again and returning them to the standby position. The operation unit in the cutting apparatus A is provided with a handle 5 that the operator can hold and operate with a hand, a lever 6 that swings when the handle 5 is operated, and spaced apart on both sides of the handle 5 to the extent that the operator cannot operate with one hand. It has two grips 7 and a grip guide 8. The lever 6 is formed in an L shape having a long side on the handle 5 side from the fulcrum pin 27 and a short side on a bracket 19 side to be described later from the fulcrum pin 27. As will be described later, the short side has a support ring 29 and is configured to be able to contact and support the guide track 34a of the pressing tool 34 and the guide track 19a on the cutting blade 15 side. In addition, the support ring 29 is an “engagement portion” that engages the “support portion” that is configured by the guide tracks 19 a, 34 a and the like so as to be reciprocally movable with respect to the handle 5 operated by the operator. It will have the function of. One end of the long side is fixed to the end of the handle 5. The other end of each long side of the lever 6 has a fulcrum pin, the vicinity of the fulcrum pin 27 is connected by a shaft 32, and the fulcrum pin 27 is attached to the frames 39 and 40 with bearings 28, respectively. . The frames 39 and 40 have through holes and communicate with the shaft 32, and are fixed to the base 1. Therefore, the handle 5 attached to the lever 6 having the support ring 29 functions as a “clue portion” for reciprocating the “support portion” described above via the support ring 29 serving as the “engagement portion”. It becomes.

  Further, two stopper frames 24 are provided along the inner side of the long side of the lever 6 so as to be connected to the grip 7, and the stopper frames 24 reciprocate in the longitudinal direction corresponding to the entrance and exit of the grips 7. A spring 46 is provided. Further, a stopper pin 25 and a stopper ring 26 are provided on one end side of each stopper frame 24, and the outer periphery of each stopper ring 26 communicates with a through hole provided in the frames 39 and 40. The through-hole is a modified arc-shaped hole having a shape in which a bent portion is added to both ends of the arc-shaped portion, and the stopper ring 26 can be anchored at the bent portion. Therefore, when the handle 5 and the lever 6 are held at predetermined positions, anchoring the stopper ring 26 to the bent portion of the through hole on the side away from the base 1 functions as a standby stopper, and the side closer to the base 1 Mooring the stopper ring 26 at the bent portion of the through hole functions as a stopper at the time of cutting.

Next, the structure which concerns on the reciprocation to the cutting width direction of the pressing tool 34, the cutting blade 15, and the cutting blade 15 regarding the principal part of the cutting device A is demonstrated.
(Pressing tool)
The pressing tool 34 has a function of pressing the sheet bundle 48 in the cutting direction at the time of cutting. As shown in FIG. 4, the pressing tool 34 has an L-shaped surface that can contact the upper surface of the sheet bundle 48, and the sheet bundle 48 is sandwiched between the one surface and the mounting surface of the base 1. Can be pressed. Further, the pressing force by the pressing tool 34 is set to such an extent that the sheet bundle 48 does not move in the cutting width direction at the time of cutting and so that no wrinkles or pressing marks remain on the sheet surface of the sheet bundle 48.

(Cutting blade)
The cutting blade 15 is plate-shaped, and is fixed so that the side surface is in close contact between the plate 14 and the frame 16. As shown in FIG. 7, the cutting blade 15 is formed with a cutting edge line having a plurality of protruding blades. The plurality of protruding blades will be described later as a specifically preferable cutting blade.
The frame 16 to which the cutting blade 15 is fixed is attached to a linear guide 17 having a track in the cutting width direction. The linear guide 17 is attached to the frame 18. The frame 18 is attached to two linear guides 31 having tracks in the cutting direction. The linear guides 31 are respectively attached to frames 39 and 40 fixed to the base 1. Therefore, as the cutting blade drive mechanism, the cutting blade 15 can be moved in the cutting direction and the standby direction along the linear guide 31 and can be reciprocated in the cutting width direction along the linear guide 17. It has become.

(Reciprocating movement of cutting blade in cutting width direction)
The cutting blade 15 described above is reciprocated in the cutting width direction of the sheet bundle 48 by the rotation of the motor 20 fixed to the frame 18. Specifically, in the cutting device A, an eccentric cam 21 is attached to the rotating shaft of the motor 20, a bearing 22 is provided on the outer periphery thereof, and the guide ring 23 has an elongated hole shape that fixes the movement of the outer ring of the bearing 22 to the frame 16. The configuration is limited at the inner edge of the ring. With this configuration, when the motor 20 rotates and the eccentric cam 21 rotates eccentrically, the eccentric rotational motion is transmitted to the frame 16 via the bearing 22 and the guide ring 23, and the eccentric rotational motion transmitted to the frame 16 is linear guide. 17 is converted into a reciprocating motion in the cutting width direction. Accordingly, the cutting blade 15 fixed to the frame 16 performs the same reciprocating motion as the frame 16 and is reciprocated in the cutting width direction.

Next, the pressing tool 34 and the cutting blade 15, which are important in the cutting apparatus A, always press the cutting blade 15 in the cutting direction, and the pressing tool 34 against the biasing force of the “biasing part”. The “support part” supporting the cutting blade 15 and the configuration related to releasing the support using the pressing tool 34 by the “support part” and the above-described “operation part” of the cutting blade 15 will be described.
(Configuration of the urging unit for the pressing tool)
In the cutting device A, the pressing tool 34 is always urged in the cutting direction. Specifically, as shown in FIGS. 2 and 3, the pressing tool 34 itself is urged to be pulled in the cutting direction by using the contraction force of the three springs 35. One end of each spring 35 is locked to a hook (hole) provided in the upper part of the pressing tool 34, and the other end is locked to a hook (groove) provided to the shaft 32. The shaft 32 that locks the other end of the spring 35 is attached to the lever 6 at both ends, and the lever 6 is fixed to the frames 39 and 40 by the fulcrum pins 27, so that the reaction force generated by the spring 35 is used as a base. 1 can be received.

(Configuration of urging section for cutting blade)
The cutting blade 15 is also always urged in the cutting direction by the urging portion. Specifically, as shown in FIGS. 2 and 3, the frame 18 is biased in the cutting direction by using the contraction force of the three springs 33. Since the cutting blade 15 is attached to the frame 18 via the frame 16 and the linear guide 17, the cutting blade 15 can be urged in the cutting direction by urging the frame 18 in the cutting direction. One end of each spring 33 is locked to a hook provided on the upper portion of the frame 18, and the other end is locked to a hook provided on an L-shaped upper portion of the pressing tool 34. Although the other end of the spring 33 is locked to the pressing tool 34, the pressing tool 34 is locked to the shaft 32 via the spring 35, so that the reaction force generated by the spring 33 is the same as that of the spring 35. Can be received on base 1.

(Configuration of the support part for the pressing tool)
As described above, the pressing tool 34 is always urged in the cutting direction by the spring 35. For this reason, the support part which supports the pressing tool 34 against the urging | biasing force is required so that it may not start in a cutting | disconnection direction at the time of the standby before a cutting | disconnection start. The “supporting part” related to the pressing tool 34 intends a part, member, assembly part, or mechanism part that can support the pressing tool 34 against the urging force of the above-described “biasing part” related to the pressing tool 34. . In the cutting device A, the guide tracks 34 a provided on both sides of the pressing tool 34 are used, and the two guide tracks 34 a are supported by the two support rings 29 provided on the lever 6.

  The guide track 34a is formed with a smooth curved shape so as to face the cutting direction side in the pressing tool 34, and the outer periphery of the support ring 29 of the lever 6 abuts so that smooth rolling can be performed. The support ring 29 is provided on the distal end side of the L-shaped short side of the lever 6 via the support pin 30, and the cutting direction and the standby direction (anti-cutting direction) with the swing of the lever 6 around the fulcrum pin 27. It is free to reciprocate between. Accordingly, the lever 6 is moved against the urging force of the spring 35, and the support ring 29 of the lever 6 is stopped with the pressing tool 34 reaching the predetermined position, thereby supporting the pressing tool 34 at the predetermined position. Can do. That is, as shown in FIGS. 3 and 4, the pressing tool 34 is operated while the guide track 34 a is in contact with the support pin 29 of the lever 6, in other words, by operating the handle 5 of the operator as will be described later. Until the support pin 29 is separated from the guide track 34a, it is supported by the lever 6 against the urging force in the cutting direction.

(Configuration of the support part for the cutting blade)
As described above, the cutting blade 15 is always urged in the cutting direction by the spring 33. For this reason, the support part which supports the cutting blade 15 against the urging | biasing force is required so that it may not start in the cutting | disconnection direction at the time of the standby before a cutting | disconnection start. The “support portion” related to the cutting blade 15 intends a part, member, assembly portion, or mechanism portion that can support the cutting blade 15 against the urging force of the above-described “biasing portion” related to the cutting blade 15. . In the cutting device A, the guide tracks 19 a of the two brackets 19 provided on both sides of the frame 18 are used, and the two guide tracks 19 a are supported by the two support rings 29 provided on the lever 6. .

  The guide track 19a is formed in a smooth curved shape on the bracket 19 so as to face the cutting direction side in the frame 18, and the outer periphery of the support ring 29 of the lever 6 is in contact with the bracket 19 so that smooth rolling is possible. Therefore, like the pressing tool 34, the lever 6 is moved against the urging force of the spring 33, and the support ring 29 of the lever 6 is stopped in a state where the cutting blade 15 has reached a predetermined position. It can be supported in place. That is, as shown in FIGS. 3 and 4, the cutting blade 15 is operated by the operator's operation of the handle 5 as described later while the guide track 19 a and the support pin 29 of the lever 6 are in contact with each other. Until the support pin 29 is separated from the guide track 19a, it is supported by the lever 6 against the urging force in the cutting direction.

As described above, in the cutting apparatus A, the support structure related to the pressing tool 34 and the cutting blade 15 is such that the guide tracks 19 a and 34 a provided on the respective sides are provided on the tip of the short side of the lever 6. 29 is used as a “support portion” that can be supported in common.
On the other hand, the two levers 6 having the support ring 29 to be used in common are connected to the ends of the long sides of the L-shapes by the handle 6, and the fulcrum pins 27 are fixed to the frames 39 and 40, respectively. The frames 39 and 40 are fixed to the base 1. Therefore, the operator can tilt the lever 6 around the fulcrum pin 27. With this configuration, the lever 6 can constitute a lever mechanism that has two fulcrum pins 27 as fulcrums, two long-side handles 5 as power points, and two short-side support rings 29 as action points. it can. Therefore, even if an urging force in the cutting direction is applied to the support ring 29 of the lever 6, the support ring serving as a point of action of the lever is an ordinary urging force corresponding to the pressing load or cutting load of the sheet bundle 48. The lever 6 is not moved from the 29th side. In the cutting device A, the above-described standby stopper is provided to reliably prevent the biasing force from moving the lever 6 from the support ring 29 side.

(Configuration related to release of support of pressing tool)
In the configuration relationship between the guide track 34 a of the pressing tool 34 and the support ring 29 of the lever 6 described above, when the lever 6 is tilted by an operation of starting cutting by the operator, that is, by the operation of the handle 5 of the operator, the lever 6 is short. The support ring 29 provided on the side rotates from the state shown in FIG. 4 as shown in FIG. Thus, when the support ring 29 rotates, at the time of starting, the pressing tool 34 and the cutting blade 15 are biased by the springs 33 and 35 while the guide tracks 19a and 34a are in contact with the outer periphery of the support ring 29. Is moved in the cutting direction. The state in which the support ring 29 is in contact with the guide track 34a of the pressing tool 34 continues until the pressing tool 34 is in contact with the sheet bundle 48. After that, the pressing ring 34 cannot move in the cutting direction. Only the movement continues, and the support ring 29 is separated from the guide track 34 a of the pressing tool 34. Therefore, the support of the pressing tool 34 can be released by the operator performing an operation to start cutting and tilting the lever 6 to rotate the support ring 29. The state in which the support of the pressing tool 34 by the support ring 29 is released continues until the operator performs an operation of returning the pressing tool 34 to the standby position and the pressing tool 34 is separated from the sheet bundle 48.

(Configuration related to release of cutting blade support)
In the above-described configuration relationship between the guide track 19a on the cutting blade 15 side and the support ring 29 of the lever 6, when the lever 6 is tilted by an operation of starting cutting by the operator, that is, by operating the handle 5 of the operator, as described above. Then, the support ring 29 is rotated, and the pressing tool 34 and the cutting blade 15 are moved in the cutting direction. At the time of starting, the guide track 19a is supported in contact with the outer periphery of the support ring 29. When the cutting edge of the cutting blade 15 reaches the sheet bundle 48, the sheet bundle 48 passes through the cutting edge of the cutting blade 15. Thus, the biasing force by the spring 33 is received. Therefore, the support ring 29 supports the guide track 19a on the cutting blade 15 side when the cutting blade 15 cannot move in the cutting direction after reaching the sheet bundle 48, and the support ring 29 is separated from the guide track 19a. The urging force by the spring 33 is not received and the release is released. The state in which the support by the support ring 29 on the cutting blade 15 side is released is when the cutting ends, that is, the cutting blade 15 reaches a predetermined position in the cutting direction (bottom dead center of the cutting blade 15), and the guide track 19a is simultaneously The process continues until a predetermined position in the cutting direction (bottom dead center of the guide track 19a) is reached and the guide track 19a comes into contact with the support ring 29 again. In the cutting apparatus A, the reciprocating movement of the cutting blade 15 in the width direction of the sheet bundle 48, that is, the cutting width direction is started almost simultaneously with the start of pressing of the sheet bundle 48 by the pressing tool 34. Continues until it reaches its bottom dead center.

(Preferred cutting blade)
As a preferable cutting blade, the cutting blade 15 shown in FIG. 7 is made of a plate material, and has a cutting edge at one edge extending in the cutting width direction (horizontal direction in FIG. 7A). Such a cutting blade 15 can perform cutting by moving in the cutting direction (downward in FIG. 7A) while reciprocating in the cutting width direction. Further, in the cutting edge of the cutting blade 15, the two protruding blades indicated by the top portions 50 and 60 in FIG. 7A can be pierced with the top portions 50 and 60 serving as the apexes of the protruding blades in the cutting direction. Yes. These protruding blades are formed as isosceles triangular blades as a whole when viewed from the front. It is preferable to form the protruding blades in an isosceles triangle shape, and the same shear angle can be defined in any direction of the cutting width direction. Therefore, the cutting blade 15 provided with such a protruding blade can obtain both the effect of piercing and drawing the sheet bundle at the same time, so that it becomes a cutting blade with high cutting efficiency that requires a small load for cutting.

  The protruding blade indicated by the top 50 is formed into a triangular protruding blade that protrudes in the cutting direction by the top 50, the two bases 51 and 52 serving as the base points of the protruding part, and the two ridge lines 53 and 54 formed by these. Has been. Similarly, the protrusion part shown by the top part 60 is formed in the triangular-shaped protrusion blade by the top part 60, the two base parts 61 and 62, and the two ridgelines 63 and 64 which these make. Note that the tip of the protruding blade is not limited to the acute shape shown as the top portions 50 and 60, and may be a curved shape as long as it can pierce the sheet bundle. In addition, as shown in FIG. 7B, the protruding blade indicated by the top portion 50 has two surfaces 71 (rake surfaces) that form the ridges 55 continuous from the top portion 50, and a surface 72 that is the opposite surface. (Flank), and the ridge 55 and the surface 72 form a cutting edge angle. Similarly, in the protruding blade indicated by the top portion 60, the peak 65 continuous from the top portion 60 is formed by two surfaces, and the opposite surface forms an edge angle with the peak 65.

  Between the two adjacent protruding blades described above, there is a linear bottom portion 70 including a linear shape. Both ends of the linear bottom portion 70 coincide with the base portions 51 and 61, and are formed to be bent continuously with respect to the protruding blade. In this case, a portion connecting the base portions 51 and 61 corresponds to the linear shape of the linear bottom portion 70. In addition, it is preferable that the linear part of the linear bottom part 70 is located in parallel with the sheet surface located at the top of the sheet bundle which is the material to be cut. Further, the linear bottom portion 70 can be formed so as to be continuous in an arc shape by providing an R portion with respect to the protruding blade, thereby relaxing the stress concentration during cutting. In some cases, the mechanical strength of the base of the protruding blade can be ensured by providing a step. The bases 51 and 61 of the protruding blades described above correspond to the intersections when both the ridge line and the linear part are extended in the case where the R part is provided, and the part connecting the intersections on both sides is the linear shape of the linear bottom part. It is understood that it corresponds to.

(Preferred cradle)
As a preferred pedestal, a material using a resin such as vinyl chloride, urethane, or natural rubber or rubber is preferable. For example, polypropylene used for a commercially available cutting mat can be used. The cradle is configured such that when the cutting edge of the cutting blade 15 reaches the lowest position in the cutting direction, the tip of the cutting edge comes into contact with the receiving surface of the cradle or the tip of the cutting edge contacts the receiving surface. It is preferable to set the position so as to slightly bite.

Hereinafter, the cutting operation of the sheet bundle 48 by the cutting apparatus A will be described.
In the standby state shown in FIG. 4, the operator holds the two grips 7 of the handle 5 with both hands, operates the two grips 7 at the same time to invalidate the standby stopper function by the stopper ring 26, and holds the handle 5 as it is. Tilt to approach the base 1 side. By this operation, the long side of the lever 6 tilts around the fulcrum pin 27 so as to approach the base 1 side. By the tilting of the lever 6, the support ring 29 on the distal end side of the short side of the lever 6 is rotated around the fulcrum pin 27 so as to be separated from the base 1 side. By the rotation of the support ring 29, the support ring 29 is separated from the guide track 34a while rotating along the guide track 34a of the pressing tool 34. Similarly, while rotating along the guide track 19a on the cutting blade 15 side, the guide track 19a moves away.

  During the rotation of the support ring 29, the pressing tool 34 biased in the cutting direction by the spring 35 is supported by the contact of the support ring 29 with respect to the guide track 34 a and contacts the sheet bundle 48 in the cutting direction. After moving to the contact and contacting the sheet bundle 48, the support ring 29 is no longer supported by the guide track 34a. On the other hand, the cutting blade 15 biased in the cutting direction by the spring 33 is supported by the contact of the support ring 29 with respect to the guide track 19a and moves in the cutting direction until the cutting edge comes into contact with the sheet bundle 48. After contact with the bundle 48, the support of the support ring 29 with respect to the guide track 19a is canceled.

  In the cutting apparatus A, the movement of the cutting blade 15 and the pressing tool 34 in the cutting direction as described above is instantaneously performed by the urging force of the springs 33 and 35. In particular, the pressing tool 34 immediately reaches a predetermined position in the cutting direction and comes into contact with the sheet bundle 34. Various means can be considered for determining whether the pressing tool 34 reaches the predetermined position at this time, but in the cutting apparatus A, the sensor 36 attached to the pressing tool 34 and the plate 38 attached to the frame 18 on the bracket 19 side , And based on the detected movement information of the pressing tool 34. In addition, based on the movement information, the reciprocating movement of the cutting blade 15 in the cutting width direction is controlled. Further, during the cutting operation, even if the operator releases the handle 5, the grip 7 is operated to enable the stopper function at the time of cutting by the stopper ring 26 so that the lever 6 is held in that position. Is preferred.

  The pressing tool 34 starts pressing the sheet bundle 48 immediately before or simultaneously with the cancellation of the support by the support ring 29, and the cutting blade 15 further moves in the cutting direction while reciprocating in the cutting width direction. Eventually, the cutting edge of the cutting blade 15 reaches the uppermost sheet material of the sheet bundle 34, the cutting edge reaching the sheet material starts to cut the sheet bundle 48, and the cutting blade 15 gradually moves in the cutting direction as the cutting progresses. I will do it. On the other hand, after the cutting edge reaches the sheet material, the support ring 29 is separated from the guide track 19a while rotating along the guide track 19a. Accordingly, the support on the cutting blade 15 side by the guide track 19a and the support ring 29 is released. After the support on the cutting blade 15 side is released, if the operator operates the two grips 7 at the same time to enable the stopper function at the time of cutting by the stopper ring 26, the operator can remove the hand from the handle 5. Even if released, the cutting operation of the sheet bundle 48 can be continued.

  Thereafter, as shown in FIG. 5, the sheet bundle 48 is pierced in the thickness direction and cut in the width direction by the plurality of protruding blades shown in FIG. 7 of the cutting blade 15 reciprocating in the cutting width direction. It will be cut efficiently. Finally, as shown in FIG. 6, the cutting edge of the cutting blade 15 reaches the receiving tray 13, the sheet bundle 48 is completely cut, and the cutting operation is finished. Various means can be considered to determine the end of cutting at this time, but in the cutting apparatus A, information that the cutting blade 15 has reached a predetermined position in the cutting direction (bottom dead center of the cutting blade 15) and the cradle 13 are cut. Information that the blade edge of the blade 15 is pressed can be detected, and can be performed based on the detected cutting blade 15 or movement information of the blade edge. In the cutting device A, the end of cutting is determined based on movement information of the plate 38 attached to the frame 18 by the sensor 37, and control is performed so as to stop the reciprocating movement of the cutting blade 15 in the cutting width direction.

  After the cutting of the sheet bundle 48, the operator returns the cutting blade 15 and the pressing tool 34, which have stopped reciprocating movement, to the standby position before starting the cutting. Specifically, the operator grips the handle 5 by hand, simultaneously operates the two grips 7 to invalidate the stopper function when cutting by the stopper ring 26, and tilts the handle 5 as it is away from the base 1 side. To do. By this operation, the long side of the lever 6 tilts around the fulcrum pin 27 so as to be separated from the base 1 side. By this tilting of the lever 6, the support ring 29 on the tip side of the short side of the lever 6 is rotated around the fulcrum pin 27 so as to approach the base 1 side. By the rotation of the support ring 29, the support ring 29 abuts on the guide track 19a while rotating along the guide track 19a on the cutting blade 15 side, and further along the guide track 34a of the pressing tool 34. While rotating, it contacts the guide track 34a. At the same time that the support ring 29 comes into contact with the guide tracks 19a and 34a, the urging force of the pressing tool 34 by the spring 35 and the cutting blade 15 by the spring 33 starts to act. Therefore, when the operator further tilts the handle 5 while resisting the biasing force of the springs 33 and 35 and rotates the lever 6 until it reaches the predetermined position in the standby state, the pressing tool 34 and the cutting blade 15 are pushed up. Reach the standby position before disconnection disclosure. Thus, when the pressing tool 34 and the cutting blade 15 are returned to the standby position, the operator operates the grip 7 to activate the standby stopper function by the stopper ring 26, so that the standby position from the start of cutting of the cutting device A is achieved. A series of operations until the return to is completed.

1. Base 2. 2. Retainer foot 3. Cover 4. Cover 5. Handle 6. Lever 7. Grip 8. 8. Grip guide Guide 10. Guide 11. Switch 12. Jack13. Receiving base 14. Plate 15. Cutting blade 16. Frame 17. Linear guide 18. Frame 19. Bracket 19a. Guide track 20. Motor 21. Eccentric cam 22. Bearing 23. Guide ring 24. Stopper frame 25. Stopper pin 26. Stopper ring 27. Fulcrum pin 28. Bearing 29. Support ring 30. Support pin 31. Linear guide 32. Shaft 33. Spring 34. Pressing tool 34a. Guide track 35. Spring 36. Sensor 37. Sensor 38. Plate 39. Frame 40. Frame 41. Shutter 42. Bracket 43. Bracket 44. Side plate 45. Side plate 46. Spring 47. Magnet 48. Sheet bundle 50. Top 51. Base 52. Base 53. Ridge line 54. Ridge line 55. Peak 60. Top 61. Base 62. Base 63. Ridge line 64. Ridge line 65. Peak 70. Straight bottom 71. Surface 72. surface

Claims (8)

  A pressing tool for pressing the sheet bundle in the cutting direction at the time of cutting, a plate-shaped cutting blade for cutting the sheet bundle while reciprocating in the cutting width direction, and the pressing tool and the cutting blade are always in the cutting direction. A biasing portion that is biased, a support portion that supports the pressing tool and the cutting blade against the biasing force of the biasing portion, and a support for the pressing tool and the cutting blade that is supported by the support portion. An operating part for releasing the operating part, the operating part having a clue part for reciprocating the support part, and an engaging part for engaging the support part with the clue part. A sheet bundle cutting device characterized in that a lever force point is provided in the clue portion, a lever fulcrum is provided in the engagement portion, and an action point of the lever is provided in the support portion. .   The sheet bundle cutting device according to claim 1, further comprising a standby stopper for locking the clue portion at a standby position.   2. A stopper at the time of cutting for locking the clue part in a predetermined position while the support of the pressing tool and the cutting blade by the support part is released. The sheet bundle cutting device according to 2.   The clue part is provided with two release parts at a distance where simultaneous operation with one hand is impossible, and the clue part is made movable by simultaneous operation of the two release parts. Item 4. The sheet bundle cutting device according to any one of Items 1 to 3.   The sheet bundle cutting according to any one of claims 1 to 4, wherein the reciprocating movement of the cutting blade in the cutting width direction is started based on movement information of the pressing tool in the cutting direction. apparatus.   The sheet bundle cutting according to any one of claims 1 to 5, wherein the reciprocating movement of the cutting blade in the cutting width direction is stopped based on movement information of the cutting blade in the cutting direction. apparatus.   The cutting blade has a plurality of protruding blade portions at one edge in a cutting direction side, and the protruding blade portions are formed with ridgelines that allow piercing and cutting. The sheet bundle cutting device according to claim 1.   The sheet bundle cutting device according to claim 7, wherein the cutting blade has a bottom portion that is partly or entirely formed linearly between the adjacent protruding blade portions.