JP2018118325A - Cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter which responds to enlargement resulting from increase of a diameter of a rotary blade and improves safety during replacement of a replacement blade.SOLUTION: A cutter is formed including: a cutting tool 10 including a slider 11 which is attached to the cutter and may move in a cutting direction, a rotary blade holder 20 which is detachably attached to the slider and holds a rotary blade 2, and an attachment/detachment member 30 which attaches/detaches the rotary blade holder to/from the slider; a rail 3 to which the cutting tool is slidably attached; and an arm 5 which attaches the rail to a base 4. The base is formed by an aluminium material. The rotary blade holder comprises an upper holder and a lower holder and is attached to the slider to move up or down the lower holder and expose the rotary blade.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cutting machine that cuts a sheet by moving a slider that holds a rotary blade along a rail, and more particularly to a cutting machine that can cut a thick sheet bundle.

Various types of slide-type cutting machines have been proposed in which a replacement blade in a state where a rotary blade is held by a rotary blade holder is attached to a slider.
As a cassette-type holder for such a cutting machine, for example, Patent Document 1 discloses a structure in which a blade edge of a rotary blade is exposed through a notch provided in a detachable member by an operation of attaching a cover member to a slider main body. Things have been proposed. The rotary blade holder is provided with the substantially arc-shaped sliding path, and the operating portion provided on the detachable member is displaced in the direction in which the rotary blade holder is attached to the slider, so that the rotary blade holder is lowered and the cutting edge is exposed from the notch. Is done. When removing the rotary blade holder from the slider, the shield plate is lowered to cover the rotary blade, thereby improving the safety when replacing the blade.
Japanese Patent No. 5553542

However, the rotary blade of such a cutter has a problem that the diameter is usually about 28 mm and a thick sheet bundle cannot be cut.
Therefore, the present invention increases the diameter of the rotary blade to cut a thick sheet bundle, increases the size of the cutting machine accompanying the increase in the rotary blade, and increases the safety when replacing the blade. For the purpose.

  In order to solve the above problems, the present invention provides a slider that is movable in a cutting direction, a rotary blade holder that is detachably attached to the slider and holds a rotary blade, and a detachable attachment that attaches the rotary blade holder to the slider. A cutting machine comprising: a cutting tool having a member; a rail on which the cutting tool is slidably attached; and an arm for attaching the rail to the base, wherein the base is made of an aluminum material. It is characterized by comprising.

In this case, the rotary blade holder includes an upper holder in which the rotary blade is rotatably mounted in the shaft hole portion, and a lower holder attached to the holder so as to be movable up and down. The rotary blade may be exposed by attaching the rotary blade holder to the slider in a state where the shaft hole portion is inserted through a support shaft provided on the detachable member.
In this case, when the rotary blade holder is attached to the slider, the lower blade of the lower holder comes into contact with the paper pressing plate provided at the lower end of the rail so that the rotary blade is exposed. You may comprise.

The lower holder is attached to the upper holder via an elastic member, and the lower member is engaged with the lower holder while the lower end of the lower holder abuts against the paper pressing plate. A part may be latched by the upper holder and the rotary blade may be exposed.
The lower holder may be configured such that when the fitting between the upper holder and the slider is released, the locking portion is released and the lower holder is lowered.
An elastic member is interposed between the rotary blade holder and the detachable member, and a fastener for adjusting the pressing force of the elastic member is provided, and the rotary blade holder is pressed in a downward direction. You may comprise so that it may attach to the said slider.

The shaft hole portion may be designed such that the rotary blade is arranged at an angle of 0.1 to 1.5 degrees from a direction orthogonal to the support shaft.
An operating part for raising and lowering the rail may be provided on the arm, and a lock member for fixing the rail may be provided, and a magnetic body capable of adsorbing the cutting tool may be attached to the arm.
A groove having an uneven cross section extending along the rail may be provided on the base, and a cutter mat having an uneven cross section may be embedded in the groove.

In the cutting machine according to the present invention, since the base on which the paper is placed is made of an aluminum material, the weight can be reduced even if the cutting machine becomes larger as the diameter of the rotary blade increases.
In the cutting machine according to claim 2, the rotary blade holder is composed of an upper holder on which the rotary blade is supported and a lower holder attached to the rotary blade so as to be movable up and down. Since the rotary blade is exposed by attaching the rotary blade holder to the slider while the shaft hole of the rotary blade is inserted, the shield state of the rotary blade is automatically set after attaching the replacement blade. It can be released. Since there is no opportunity to touch the blade when replacing the blade, safety is high.

In the cutting machine according to the third aspect, the rotary blade is exposed by the lower end of the lower holder coming into contact with the paper pressing plate provided at the lower end of the rail. The shielded state of the blade can be released. Further, since the rotary blade is protected by the paper pressing plate, safety is high.
According to a fourth aspect of the present invention, the lower holder is attached to the upper holder via an elastic member, and the lower portion of the lower holder is brought into contact with the rail so that the locking portion of the lower holder is in the biased state. It can be locked. Thereby, the raising / lowering of the lower holder with respect to the upper holder can be realized with a simple mechanism term.
Moreover, since the lower holder is automatically lowered by releasing the fitting between the upper holder and the slider, the rotary blade is shielded when the rotary blade holder is removed. Therefore, the safety at the time of replacement work of the replaceable blade is extremely high.

In the cutting machine according to the fifth aspect, since the elastic member is interposed between the rotary blade holder and the detachable member, the pressing force from the rotary blade can be adjusted according to the thickness of the sheet bundle.
Since the cutting machine according to claim 6 is configured so that the rotary blade is arranged by inclining the shaft hole portion of the upper holder at an angle of 0.1 degrees to 1.5 degrees from the direction orthogonal to the support shaft 31, It can cut with respect to the to-be-cut object on a base in the state inclined 0.1 to 1.5 degree | times from the perpendicular direction. For this reason, even when a large number of sheets are cut at a time, it is possible to prevent the lower sheet from escaping at the time of cutting.

In the cutting machine according to the seventh aspect of the present invention, an operating portion for raising and lowering the rail and a lock member for fixing the rail are provided on the arm, and a cutting tool and an adsorbable magnetic body are attached to the arm. It is possible to prevent the cutting tool from inadvertently moving with the vertical movement. Thus, it is possible to prevent the sheet from being cut carelessly.
In the cutting machine according to the eighth aspect, since the cutter mat having a concavo-convex section is embedded in the groove having a concavo-convex section provided in the base, the cutter mat is difficult to come off.

It is a perspective view of the cutting machine concerning a 1st embodiment of the present invention. It is explanatory drawing which shows the state with which the rail of the said cutting machine was attached to the base, (a) is the state before use, (b) shows the state which unlocked the arm and raised the rail, c) shows a state where the arm is locked and the slider is pushed down. It is sectional drawing which shows the cutting tool of the state attached to the said rail. It is explanatory drawing which shows the state which looked at the said cutting tool of the state which removed the cover part from upper direction. It is explanatory drawing which shows the state which looked at the slider base of the said cutting tool from the removal member side. It is a perspective view of the rotary blade holder attached to the said cutting tool. It is explanatory drawing which shows the internal state of the said cutting machine, (a) shows the state which removed the container part by the side of a desorption member, (b) shows the state which looked at the inside of the rotary blade holder from the desorption member side. . It is explanatory drawing which shows the arrangement | positioning state of a rotary blade. It is explanatory drawing which shows the state by which the said rotary blade holder was attached to the removal | desorption member, (a) shows the state immediately after attachment, (b) shows the state when the cutting tool is pushed down. It is explanatory drawing which shows the removal | desorption member before a rotary blade holder is attached. It is explanatory drawing which shows the state which replaces the said rotary blade holder, (a) shows the state before replacement, (b) shows the state which removed the attachment / detachment member from the slider. It is explanatory drawing which shows the 1st modification of the said cutting machine. It is explanatory drawing which shows the 2nd modification of the said cutting machine.

  A preferred embodiment of the present invention will be described with reference to the accompanying drawings. In addition, embodiment of this invention is not limited to the following forms, Other aspects can also be implemented if the subject of this invention can be solved.

FIG. 1 is a perspective view showing a cutting machine 1 according to an embodiment of the present invention.
The cutting machine 1 is for cutting a sheet bundle with a large-diameter rotary blade 2, and includes a cutting tool 10 to which the rotary blade 2 is attached, a rail 3 to which the cutting tool 10 is slidably attached, and a rail 3 And a base 4 that supports
The rail 3 is installed on the arms 5 and 5 provided at both ends of the base 4 at a height at which a sheet bundle having a thickness of at least 8 mm or more can be inserted from the surface of the base.

  One arm 5 is provided with a lock mechanism 5 a for fixing the rail 3. The lock mechanism 5a is configured by providing a U-shaped member that is elastically deformable so as to be rotatable with respect to the base 4 (see FIG. 2). By releasing the locked state of the rotating end 5b from the initial position where the rotating end 5b of the U-shaped member is locked to the arm 5, the rail 3 moves upward and the sheet is inserted. A gap is provided for this purpose (see FIG. 2B).

  A paper presser plate 6 for fixing a sheet placed on the base 3 is attached to the lower end of the rail 4. After the sheet is placed on the base 4, the sheet is fixed on the base 4 by the paper pressing plate 6 by locking the rail 3 while being pushed down by the lock mechanism 5 a (see FIG. 2C). reference). In this state, the sheet is cut by the rotary blade 2 provided on the cutting tool 10 by sliding the cutting tool 10 by applying manual pressure.

  The base 4 is provided with a groove having an uneven cross section extending along the rail 3, and a cutter mat 7 having an uneven cross section corresponding to the groove is embedded. That is, the buried groove is formed so that the opening area on the surface of the base 4 is reduced and the opening area inside is increased. It is possible to make it difficult to come off by fitting the uneven cutter mat 7 corresponding to the buried groove.

As shown in FIG. 3, the cutting tool 10 includes a slider 11 that is slidably attached to the rail 3, a rotary blade holder 20 that holds the rotary blade 2 in the holder, and a rotary blade holder 20 that is attached to and detached from the slider 11. And a detachable member 30 for causing the
The slider 11 includes a base portion 11a attached to the rail 3 and a lid portion 11b provided to be rotatable with respect to the base portion 11a. When the lid portion 11b is opened, a detaching member 11c for removing the rotary blade holder 20 is provided. Appears (see FIG. 4).

As shown in FIG. 5, a guide groove 12 for guiding the rotary blade holder 20 extends in the vertical direction on the surface of the slider base 11a to which the rotary blade holder 20 is attached. The lower end of the guide groove 12 is open, and the rotary blade 2 appears and disappears from the rotary blade holder 20 held by the detachable member 30.
On the upper surface of the slider base portion 11a, there are provided a housing portion for an illumination battery and a detaching operation portion 11c for taking out the rotary holder 20. The attachment / detachment operation part 11 c is arranged to operate the removal part 14 for removing the rotary blade holder 20 via the spring 13. The upper surface portion of the slider base portion 11 a is covered with the slider lid portion 11 b together with the detachable member 30 that holds the rotary blade holder 20.

As shown in FIG. 6, the rotary blade holder 20 includes an upper holder 21 that supports the rotary blade 2 and a lower holder 22 that is attached to the holder 21 so as to be movable up and down. The upper holder 21 has a shaft hole 23 for rotatably mounting the rotary blade 2.
A lower holder 22 is attached to the upper holder 21 so as to be movable up and down. Any holder part is a half-cracked container separated along the surface of the rotary blade 2.

When the container parts 21a and 22a on the side attached to the detachable member 30 are removed, the metal rotary blade 2 mounted around the cylindrical shaft hole part 23 appears (see FIG. 7A).
The diameter of the rotary blade 2 is 60 mm or more so that a thick sheet bundle can be cut into one machine. The shaft hole portion 23 of the upper holder can be cut so that the sheet bundle can be cut in a state where the surface of the rotary blade 2 is inclined at an angle of 0.1 to 1.5 degrees from the direction orthogonal to the base 4. The peripheral surface holding the rotary blade 2 is inclined at an angle θ of about 1 degree with respect to the support shaft 31 of the detachable member 30 (see FIG. 8).

A guide surface 24b for smoothly moving on the paper pressing plate 6 is formed along the lower edge portion of the slider side container portion 22b of the lower holder 22. Bearings 25b are disposed at both ends thereof (see FIG. 7A).
A similar guide surface 24a and a bearing 25a are also formed on the container portions 21a and 22a on the side of the detachable member 30. The guide surface 24b of the container portion 22b on the slider side is formed slightly above the lower end portion of the container portion, and the guide surface 24a of the container portion 22a on the detachable member side is configured as the lower end surface of the holder. The lower end portion of the lower holder 22 is open, and the rotary blade 2 appears and disappears from the lower end portions of the container portions 22a and 22b as the lower holder 22 is moved up and down (see FIGS. 7B and 6). .

The lower holder 22 is lifted with respect to the upper holder 21 because the detachable member 30 holding the rotary blade holder 20 descends along the guide groove 12 of the slider 11 and is attached below the slider 11 via an elastic member. The paper pressing plate 6 is made possible by pressing the lower holder 22 of the rotary blade holder 20.
A torsion coil spring 26 is interposed between the upper holder 21 and the lower holder 22, and when the lower holder 22 is lifted, the torsion coil spring 26 is urged while the lower holder 22 is engaged. The stop portion 27 is locked to the locked portion of the upper holder 21 (see FIG. 9).

In this way, the lower holder 22 is raised by pressing the paper pressing plate 6 with the lower end portion of the lower holder 22, and the cutting edge 2a of the rotary blade 2 is exposed from the gap between the container portions 22a and 22b. . As the lower holder 22 rises, the removal portion 14 of the slider 11 is engaged with the locked portion 29 provided in the lower holder 22, and the exposed state of the rotary blade 2 is maintained.
On the other hand, when removing the rotary blade holder 20 from the slider 11, the slider lid portion 11b is opened and the removal portion 11c is operated.

By operating the detaching operation part 11c, the detaching part 14 is operated via the elastic member 13, the lower holder 22 is displaced, and the fitting state with the detaching member 30 is released. With this configuration, by removing the detachable member 30 from the slider 11, the lower holder 22 of the rotary blade holder 20 is lowered to shield the rotary blade (see FIG. 7A).
Next, the inside of the detachable member 30 will be described with reference to FIG. A support shaft 31 for attaching the rotary blade holder 20 is provided at the center of the detachable member 30, and a magnet 32 is provided on the rotary blade 2 above the support shaft 31.

The magnet 32 is for ensuring stable rotation by applying a weak magnetic force to the rotary blade 2 made of a magnetic material.
Mounting grooves 33 for mounting on the slider 11 are formed on both sides of the detachable member 30, and a screw-type operation unit 34 for adjusting the position of the rotary blade holder 20 is formed on the top. .

By rotating the operation portion 34 in the fastening direction, the compression spring 35 provided inside is pressed, and the holder holding portion 36 for holding the rotary blade holder 20 is slightly lowered.
A support shaft 31 is attached to the holder holding portion 36, and the rotary blade holder 20 attached to the support shaft 31 is slightly lowered so that the pressing force against the paper pressing plate 6 can be increased. It is preferable to adjust the position of the holder holding portion 36 according to the number of sheets to be cut.
The detachable member 30 with the rotary blade holder 20 attached is inserted along the guide portion 12 provided on the slider 11 from top to bottom.

A state in which the rotary blade holder 20 is replaced in the cutting machine 1 having the above configuration will be described with reference to FIG.
The lid portion 11b of the slider 11 is opened, and the detachment operation portion 11c is operated. Then, the spring 13 contracts, the detaching portion 14 is displaced in a direction in which the rotary blade holder 20 is pressed, and the engagement of the detachable member 30 with the holder holding portion 36 is released.
Thereafter, the detachable member 30 is slid upward and removed from the slider 11, so that the pressing force from the paper pressing plate 6 acting on the lower holder 22 is released, and the elastic restoring force of the torsion coil spring 26 lowers the lower part. The holder 22 is lowered.

By lowering the lower holder 22, the locking portion 27 is fitted with the upper holder 21 and the shielding state of the rotary blade 2 is maintained. The rotary blade 2 is shielded by the operation of removing the detachable member 30 from the slider 11.
Thereafter, the rotary blade holder 20 removed from the detachable member 30 is replaced with a new one, and the detachable member 30 that holds it is attached to the slider 11. At this time, the spring 13 provided on the slider base portion 11 a is biased, and the removing portion 14 is locked to the locked portion 29 of the rotary blade holder 20. At this time, since the lower holder 22 of the cutting machine 20 covers the rotary blade 2, safety is high.

When the sheet is cut, first, the lock member 5 of the arm 5 is opened to raise the rail 3, and a sheet insertion opening is provided (see FIG. 2B). The sheet is placed on the base 4 and the rail 3 is pushed down by operating the lock member 5.
A paper presser plate 6 is attached to the rail 3 via an elastic member, and presses the sheet on the base 4. As a result, the sheet is fixed on the base 4.

The sheet is cut by moving the slider 11 attached to the rail 3 while pressing.
At this time, by first pressing the slider 11, an upward pressing force is applied to the lower end portion of the lower holder 22 of the cutting machine 20, and a torsion coil spring 26 interposed between the upper holder 21 and the lower holder 22 is attached. Be forced.
At this time, the lower holder 22 moves upward and engages with the removing portion 14 provided on the slider 11. Thereby, the state where the rotary blade 2 is exposed from the lower holder 22 can be maintained. Since the rotary blade 2 is exposed only during the cutting operation, there are very few opportunities to touch the blade.

According to the cutting machine 1 according to the present embodiment, the rotary blade 2 is exposed by pushing down the cutting tool 10 for cutting after the attachment operation to the slider 20 is completed. 2 can be shielded, and safety is extremely high.
In particular, when the rotary blade holder 20 is removed from the slider 11, the lower holder 22 is engaged with the upper holder 21 at the lower position, so that the cutting edge of the rotary blade 2 is not exposed, and further safety is achieved. Sex is secured.

  The cutting machine 1 according to the present invention is intended to cope with the increase in size and safety associated with increasing the diameter of the rotary blade in order to cut a thick sheet bundle, and the base is made of an aluminum material. Any cutting tool may be used. For example, when the rotary blade holder 20 is attached to the slider as in the cutting tool 10 ′ shown in FIG. A structure in which the rotary blade is exposed when the lower end portion of the lower holder abuts may be used.

  Further, as shown in FIG. 13, a cutting tool 10 ″ and an attractable magnet (magnetic body 9a) may be attached to the arm 5. A magnetic body 9b is also provided at the rear end of the cutting tool 10 ″ in the moving direction. By adsorbing the cutting tool 10 ″ to the arm 5, it is possible to prevent the cutting tool 10 ″ from being moved inadvertently as the rail 3 moves up and down. As a result, the paper can be prevented from being cut carelessly.

DESCRIPTION OF SYMBOLS 1 ... Cutting machine 2 ... Rotary blade 3 ... Rail 4 ... Base 5 ... Arm 5a ... Lock mechanism 5b ... Rotating end part 6 ... Paper presser plate 7 ... Cutter mat 9 ... Magnetic body 10 ... Cutting tool 11 ... Slider 11a ... Base part 11b ... Lid part 11c ... Detaching member 12 ... Guide groove 13 ... Spring 14 ... Detaching part 20 ... Rotary blade holder 21 ... Upper holder 22 ... Lower holder 23 ... Shaft hole 24 ... Guide surface 26 ... Torsion coil spring 27 ... Locking part 29 ... Locked part 30 ... Detachable member 31 ... Support shaft 32 ... Magnet 33 ... Mounting groove 34 ... Operation part 35 ... Compression spring 36 ... Holder holding part

Claims (9)

A slider (11) that is movable in the cutting direction, a rotary blade holder (20) that is detachably attached to the slider (11) and holds the rotary blade (2), and the rotary blade holder (20) is attached to the slider A cutting tool (10) having a detachable member (30) attached to (11),
A rail (3) to which the cutting tool (10) is slidably mounted;
An arm (5) for attaching the rail (3) to a base (4), and a cutting machine (1) comprising:
A cutting machine characterized in that the base (4) is made of an aluminum material. The rotary blade holder (20) is attached to an upper holder (21) in which the rotary blade (2) is rotatably mounted in a shaft hole portion (23), and can be moved up and down with respect to the holder (21). A lower holder (22) formed,
By attaching the rotary blade holder (20) to the slider (11) in a state where the shaft hole portion (23) is inserted through a support shaft (31) provided on the detachable member (30), the rotary blade The cutting machine according to claim 1, wherein (2) is exposed.   When the rotary blade holder (20) is attached to the slider (11), the lower end of the lower holder (22) is brought into contact with the paper pressing plate (6) provided at the lower end of the rail (3). The cutting machine according to claim 2, wherein the cutting blade (2) is configured to be exposed by contact.   The lower holder (22) is attached to the upper holder (21) via an elastic member (26), and the lower end of the rail (3) abuts against the paper presser plate (6), whereby the elastic member ( 26), the engaging portion (27) of the lower holder (22) is engaged with the upper holder (21) to expose the rotary blade (2). The cutting machine according to claim 3.   The lower holder (22) is released from the engagement of the upper holder (21) and the slider (11), so that the locking portion (27) is unlocked and the lower holder (22) is The cutting machine according to claim 4, wherein the cutting machine is configured to descend.   An elastic member (35) is interposed between the rotary blade holder (20) and the detachable member (30), and a fastener (34) for adjusting the pressing force of the elastic member (35) is provided. 6. The rotary blade holder (20) is attached to the slider (11) in a state where the rotary blade holder (20) is pressed downward, according to any one of claims 2 to 5. Cutting machine.   The shaft hole portion (23) is designed such that the rotary blade (2) is disposed at an angle of 0.1 to 1.5 degrees from a direction orthogonal to the support shaft (31). The cutting machine according to any one of claims 1 to 6, characterized in that:   The arm (5) is provided with an operation part for raising and lowering the rail (3) and a lock member (5a) for fixing the rail (3) is provided, and the cutting tool is provided on the arm (5). The cutting machine according to any one of claims 1 to 7, wherein (10) and an adsorbable magnetic body (9) are attached. An uneven cross-sectional groove extending along the rail (3) is provided on the base (4), and an uneven cutter mat (7) is embedded in the groove. The cutting machine according to any one of claims 8.