JPH0624679U - cutter - Google Patents

Abstract

(57) [Abstract] [Purpose] When cutting a sheet-shaped object B to be spread on the upper surface of a floor or a workbench with a cutter, it is easy and requires a small force without pressing the object B strongly by hand. To ensure that the hand holding the object B is not scratched by the cutter. A grip 2 is formed on the upper rear side of the frame 1 of the cutter A, and a notch 5 is formed on the lower front side of the cutter A so as to face the rear side and guides an object B to be cut.
To form. The front portion of the frame 1 has a blade portion 9a arranged so as to face the rear side in the cutout portion 5, and the object B to be cut fitted in the cutout portion 5 is cut by the blade portion 9a. The cutting blade 9 is attached. The object B to be cut is fitted into the notch 5, and the object B to be cut is cut by pulling the cutter A.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutter, and more particularly, to a cutter suitable for spreading and cutting a sheet-shaped object to be cut such as soft leather, a film sheet, and a go sheet on the upper surface of a floor or a workbench.

[0002]

[Prior art]

 Conventionally, as an example of a cutter for cutting this kind of sheet-shaped object, one shown in FIG. 5 is known. This cutter is provided with a resin frame 31, and a grip portion 32 for an operator to insert his / her fingertip into is formed on the upper rear side thereof, while the lower end surface of the frame 31 is a flat surface and the front portion thereof is covered. A notch 35 for inserting and guiding a cut object is opened downward to the front side. Further, a substantially circular blade mounting portion 37 is formed in a concave shape on the left side surface on the front side of the frame 31, and a disk-shaped cutting blade 39 having a blade portion 39a on the outer periphery is mounted on the blade mounting portion 37 via a mounting bolt 44. It is stored so that it can rotate. The cutting blade 39 is arranged so that a part of the outer peripheral blade portion 39a faces the front side in the cutout portion 35 in a state where the blade portion 39a is inclined downward and rearward. Reference numeral 41 denotes a cover member that covers the cutting blade 39 with a portion other than the blade portion 39a in the cutout portion 35. A nut (not shown) is fastened to a portion of the mounting bolt 44 protruding to the right of the frame 31.

When cutting the object to be cut, the grip 32 of the frame 31 is gripped, the front end of the object to be cut is fitted into the notch 35, and the cutter is moved forward (left in the figure) in this state. By rotating the cutting blade 39 while pushing and moving it, the cutting object 39 is cut by the blade portion 39a facing the inside of the cutout portion 35.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional one, since the cutter is pushed forward from the front side to cut the object to be cut, it is necessary to firmly press the object to be cut with other hands that do not have the cutter. It may damage your other hand. In addition, cutting work requires skill and skill, and for example, it is necessary to accurately cut a sheet-shaped object wound in a roll in a direction perpendicular to both ends (parallel to the roll axis) at the part exiting from the roll. Is difficult, especially when the material to be cut is a thin and soft material.

The present invention has been made in view of the above points, and an object thereof is to improve the structure of the cutter so that the operation of firmly pressing the sheet-shaped object by hand is not necessary. , It is to ensure that cutting can be performed easily and with a small force without damaging the hands.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, in the invention of claim 1, the notch for inserting the object to be cut is directed rearward, and the object to be cut is cut by the pulling operation of the cutter.

Specifically, the cutter of the present invention is a cutter for cutting a sheet-like object to be cut, which is spread on the upper surface of a floor, a work table, or the like, and has a grip portion that can be gripped by hand on the upper rear side. On the other hand, the frame is formed on the lower part of the front side and has a notch part that is open to the rear and guides by inserting and cutting the object to be cut, and in the vertical direction attached to the front part of this frame. And a cutting blade extending. Further, the cutting blade has a blade portion arranged so as to face rearward in the cutout portion, and is configured to cut the object to be cut fitted in the cutout portion by the blade portion. To do.

According to the second aspect of the present invention, the grip portion of the frame has a wide plate shape that extends obliquely upward toward the rear side, and the wide end portion that is wider than the other portions is provided at the rear end portion of the frame.

According to a third aspect of the present invention, the cutting blade has a substantially circular plate shape having a blade portion on the outer circumference and fixed to the frame at the central portion by a fastening means so as not to be rotatable. The position of the cutting edge facing the inside of the cutout can be changed by the rotation of the cutting blade when the fastening of the fastening means is released.

According to the fourth aspect of the present invention, the lower portion of the cutout portion is formed as a tapered taper-shaped guide portion that narrows rearward.

In the invention of claim 5, a blade mounting portion is formed in a concave shape on one side surface of the frame front portion, and the blade mounting portion is covered with a cutting blade and the cutting blade with a portion other than the blade portion in the cutout portion. A cover member is housed.

In the invention of claim 6, the frame is made of a metal material.

In the invention of claim 7, the blade portion of the cutting blade is arranged so as to be inclined in the notch portion so as to face forward and downward.

In the invention of claim 8, the notch is configured to open at an angle of 20 to 30 °.

[0015]

[Action]

 With the above structure, according to the first aspect of the invention, when a sheet-shaped object is to be cut, the object is spread on the upper surface of the floor or workbench, and the grip portion on the rear upper side of the frame is gripped. Take the cutter to the opposite end of the object to be cut, and insert the opposite end of the object to be cut into the notch opening toward the rear of the lower front part of the frame. When the cutter is pulled forward while holding the gripping part in that state, the object to be cut inserted in the cutout part is cut left and right by the blade part in the cutout part along with this operation. By continuing this state up to the front end of the cut object, the cut object can be cut and separated.

Since the cutter is pulled toward the front side to cut the object to be cut in this manner, it is not necessary to firmly press the object to be cut with another hand, and the cutting is easy. Moreover, there is no fear that the hand holding the object to be cut will be cut by the cutter.

Further, it does not require the skill and skill of cutting work, and even when a sheet-shaped object wound in a roll is cut at a right angle to both side ends at a portion protruding from the roll, it can be easily performed with a small operation force. Can be done.

According to the second aspect of the present invention, the grip portion of the frame is a wide plate-like member that extends obliquely upward toward the rear side, and the wide portion is provided at the rear end portion thereof. The pulling operation of the cutter is easy, and even if the hand slips from the gripping part during cutting, the hand is caught by the wide part at the rear end of the frame, and the cutter can be gripped accurately.

According to the third aspect of the invention, when the cutting condition with respect to the object to be cut becomes dull, the fastening of the fastening means is loosened to loosen the fastening of the cutting blade so that the cutting blade can be rotated. After changing the blade located in the notch to a new part, the cutting blade can be fixed non-rotatably again by tightening the fastening means, and the blade can be replaced with a new one with a simple operation. The cutting quality can be kept good for a long period of time.

In the invention of claim 4, since the lower portion of the cutout portion is configured to be a tapered tapered guide portion that extends rearward, when the end portion of the sheet-shaped object to be cut is fitted into the cutout portion. The guide part can be easily slipped under the object to be cut, and the cutting work can be facilitated.

In the invention of claim 5, since the cutting blade is housed in the blade mounting portion in the front portion of the frame, and the portion other than the blade portion in the cutout portion is covered with the cover member, the inside of the cutout portion in the cutting blade is Only the parts necessary for cutting are exposed, and it is possible to prevent the operator from inadvertently touching the blade part of the cutting blade.

According to the invention of claim 6, since the frame is made of a metal material, the frame is not deformed even if a cutting operation is performed under a high temperature environment, and the reliability can be improved.

In the invention of claim 7, since the blade portion of the cutting blade is inclined so as to be directed forward and downward in the cutout portion, the object to be cut fitted in the cutout portion is the inclined blade portion. It will be cut while moving along with, and this will ensure that the object to be cut is cut without being cut by the blade part without being cut as in the case where there is no inclination. You can

In the invention of claim 8, since the cutout portion is opened at an angle of 20 to 30 °, the end portion of the sheet-shaped object to be cut can be smoothly inserted into the cutout portion, and the cutting can be performed. The work can be further facilitated.

[0025]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a cutter A according to an embodiment of the present invention, which cuts a sheet-shaped object B to be cut out which is spread on the upper surface of a floor, a work table or the like. In these figures, reference numeral 1 denotes a metal frame made of, for example, aluminum. The frame 1 is basically formed into a thin and wide plate having a thick wall, and the rear half portion thereof is a gripping portion which can be gripped by hand. It is said to be 2. The grip portion 2 extends obliquely upward toward the rear side (right side in FIG. 1, left side in FIG. 2) at a predetermined angle θ1 with respect to the horizontal direction, and the rear end portion of the grip portion 2 is different from other portions. A wide portion 3 having a very wide width is provided. Reference numeral 4 is a hanging hole formed through the wide portion 3.

On the other hand, the front side portion (the left side portion in FIG. 1 and the right side portion in FIG. 2) of the frame 1 has a circular plate shape, and the lower portion thereof is located near the front end portion of the grip portion 2 and below the center of the front side portion. A cutout portion 5 is formed by cutting out in the horizontal direction to the vicinity of the side. The notch 5 is opened at an opening angle θ2 of 20 to 30 ° so as to face the rear side, and an object B to be cut is inserted and guided in the notch 5 at the time of cutting.

Further, in the frame 1, the lower portion of the cutout portion 5 is configured as a tapered tapered guide portion 6 which becomes narrower toward the rear.

On the left side surface of the front side portion of the frame 1, an oval blade mounting portion 7 having a center substantially the same as the center of the front side portion is stepped in a range including the front half portion (back side portion) of the cutout portion 5. It is recessed. A circular cutting blade 9 having a diameter slightly smaller than the radius of the rear semi-circular portion of the blade mounting portion 7 is accommodated in the blade mounting portion 7 in a state of extending in a vertical direction which is a direction along the frame 1. There is. The cutting blade 9 has a blade portion 9a over the entire outer circumference, and specifically, the direction of the notch portion 5 and the cutting blade 9a so that a part of the outer peripheral blade portion 9a faces the rear side in the notch portion 5. The arc-shaped blade portion 9a of the cutting blade 9 is inclined downward toward the front in the cutout portion 5 due to the position shift with respect to the center of the cutout blade 9 and is arranged so that no gap is formed between the cutout portion 5 and the periphery thereof. The cutting object B fitted in the cutout portion 5 of the frame 1 is cut by the blade portion 9a located in the cutout portion 5 of the cutting blade 9.

A cover member 11 is housed in the blade mounting portion 7 so as to overlap the cutting blade 9. The cover member 11 is basically the same shape as the blade mounting portion 7 and slightly smaller than that, and is rotated in the blade mounting portion 7 so that the outer surface is substantially flush with the surface of the frame 1. Impossible to be accommodated. A portion of the outer peripheral portion of the cover member 11 corresponding to the cutout portion 5 is cut out over a predetermined range, and the cover member 11 covers the cutting blade 9 with a portion other than the blade portion 9a in the cutout portion 5. It has become.

The cutting blade 9 and the cover member 11 are fastened and fixed to the frame 1 via a fastening mechanism 13. That is, the central hole 10 is formed through the central portion of the cutting blade 9, while the central portions of the bottom surface of the blade mounting portion 7 of the cover member 11 and the frame 1 respectively correspond to the central hole 10 of the cutting blade 9. Through holes 8 and 12 are formed. The fastening mechanism 13 includes a mounting bolt 14 that is inserted into the through hole 12 of the cover member 11, the central hole 10 of the cutting blade 9 and the through hole 8 of the frame 1 from the cover member 11 side. It consists of a wing nut 15 that is screwed into a portion protruding from the through hole 8 to the right side of the frame 1, and a washer 16 that supports this wing nut 15. By fastening the mounting bolt 14 and the wing nut 15, the cutting blade 9 is removed. When the wing nut 15 is loosely fastened to the frame 1 at the central portion and the wing nut 15 is loosely fastened to the mounting bolt 14, the cutting blade 9 is rotated around the central hole 10 so that the notch 5 The position of the blade portion 9a facing the inside can be changed.

Next, how to use the cutter A of the above embodiment will be described. When the sheet-shaped object B is cut by the cutter A, the object B is spread in advance on the upper surface of the floor or the workbench. Then, as shown in FIG. 4, by grasping the grip portion 2 on the upper rear side of the frame 1 of the cutter A, the cutter A is brought to the opposite end of the object to be cut B, and the rear side of the lower front portion of the frame 1 is opened. The opposite end of the object B to be cut is fitted into the notch 5.

At this time, since the lower portion of the cutout portion 5 is the tapered tapered guide portion 6 directed rearward, the end portion of the sheet-shaped object B is fitted into the cutout portion 5. At this time, the guide portion 6 can be smoothly and easily slipped under the end portion of the object to be cut B. Moreover, since the notch 5 is opened at an angle θ2 of 20 to 30 °, the end of the object to be cut B can be smoothly fitted into the notch 5.

After that, when the cutter A is pulled toward the front side while holding the grip portion 2, the object B to be cut inserted in the cut portion 5 is accompanied by this operation and the cut portion 5 of the cutting blade 9 is cut. The blade 9a is cut left and right, and by continuing this state up to the front end of the object B, the object B can be cut and separated.

At this time, the cutting blade 9 has a disk shape, and a part of the blade portion 9a on the outer periphery of the cutting blade 9 is inclined so as to face forward and downward in the cutout portion 5, so that the cutout portion is cut at the time of cutting. The object to be cut B moving relatively rearward in the portion 5 is cut while moving along the inclined blade portion 9a. That is, when the blades are arranged in the cutouts 5 in the upper and lower directions orthogonal to the cutouts 5, there is a risk that the end of the object to be cut B may not be cut and may be caught by the blades. In this case, since the blade 9a is obliquely applied to the object to be cut B and cut while being pulled, the object B to be cut can be surely cut without the above-mentioned catching.

Therefore, in this embodiment, as described above, the cutter A is pulled to the front side to cut the object to be cut B, so that the object to be cut B is firmly held by the other hand not having the cutter A. It is possible to cut without attaching it, and it is possible to easily perform cutting, and it is possible to satisfactorily prevent other hands from being cut and scratched during cutting. Moreover, the force and skill required for cutting are not required. Therefore, for example, even when the sheet-shaped object B rolled into a roll is cut at a portion extending from the roll at a right angle to both side ends, it is small. It can be performed easily and accurately with various operating forces.

Further, since the grip portion 2 of the frame 1 is a wide plate-shaped member that extends obliquely upward toward the rear side, the pulling operation of the cutter A at the time of the above cutting is easy. Further, since the rear end of the frame 1 is the wide portion 3, even if the hand slips from the gripping portion 2 during cutting, the hand is caught by the wide portion 3 and the cutter A during the work. Never drop.

Further, the cutting blade 9 is housed in the blade mounting portion 7 in the front portion of the frame 1, and the portion other than the blade portion 9 a in the cutout portion 5 is covered with the cover member 11, so that the cutting blade 9 Only the portion necessary for cutting in the notch 5 is exposed. Therefore, it is possible to prevent the operator from inadvertently touching the blade portion 9a of the cutting blade 9 when the cutter A is not used.

Further, since the frame 1 is made of a metal material, the frame 1 will not be deformed even if the cutting operation is performed in a high temperature environment, and the reliability can be improved.

When the cutting condition becomes dull due to the repetition of the cutting work as described above, first, the wing nut 15 of the fastening mechanism 13 is loosened so that the cutting blade 9 can be rotated. The blade 9a located in the notch 5 is changed to a new portion by the rotation of 9, and then the wing nut 15 is re-tightened to re-fix the cutting blade 9 non-rotatably. It can be replaced with a new blade portion 9a, and the cutting quality of the entire cutter A can be kept good for a long period of time.

Further, when all the blade portions 9a around the entire circumference of the cutting blade 9 are used by repeating such exchange of the blade portion 9a, the wing nut 15 is removed from the mounting bolt 14 and the cutting blade 9 itself is replaced with a new one. do it.

The present invention is not limited to the above-mentioned embodiment, but includes various modifications. For example, in the above-mentioned embodiment, the cutting blade 9 has a disc shape. Other than this, it is possible to use a plate-shaped member such as a rectangle or a triangle.

Further, in the above embodiment, the cutting blade 9 is housed in the blade mounting portion 7, but the cutting blade 9 can be directly mounted on the frame 1 without providing the blade mounting portion 7.

Further, the grip portion 2 of the frame 1 may have a conventional structure (see FIG. 5) in which an operator puts his / her fingertip and grips.

[0044]

[Effect of device]

 As described above, according to the invention of claim 1, as a cutter for cutting a sheet-like object to be cut, which is spread on the upper surface of a floor, a workbench, etc., while having a grip portion on the upper rear side, A frame having a cutout that opens rearward and guides the object to be inserted by inserting is provided in the lower part of the front side, and is arranged in the front of the frame so as to face the rear side in the cutout. Since it has a blade and a cutting blade that cuts the object to be cut in the notch with the blade, the cutter can be pulled to the front side to cut the object to be cut. Since it is not necessary to firmly press it with the hand, cutting can be performed easily with a slight force and without damaging the hand holding the object to be cut. Further, even when the sheet-shaped object wound in a roll shape is cut at a portion extending from the roll at a right angle to both side ends, the cutting can be performed easily and accurately.

According to the second aspect of the present invention, the grip portion of the frame has a wide plate shape that extends obliquely upward toward the rear side, and the wide portion is provided at the rear end portion of the frame. The pulling operation of the cutter can be done easily and the cutter can be held securely.

According to the invention of claim 3, the cutting blade has a substantially circular plate shape having a blade portion on the outer periphery and fixed to the frame at the center portion by the fastening means so as not to be rotatable. Since the position of the blade that faces the notch can be changed by turning the cutting blade when the fastening of the fastening means is released, it is easy to perform when the cutting condition of the workpiece becomes dull. The blade can be replaced with a new one by operation, and the cutting quality of the entire cutter can be kept good for a long period of time.

According to the invention of claim 4, since the lower portion of the cutout portion is the guide portion of the taper tapering rearward, when the end portion of the sheet-shaped object to be cut is fitted into the cutout portion, The inside of the plan can be smoothly and easily slipped under the object to be cut, and the cutting work can be facilitated.

According to the invention of claim 5, a blade mounting portion is formed in a concave shape on one side surface of the frame front portion, and the blade mounting portion is covered with a cutting blade and the cutting blade with a portion other than the blade portion in the cutout portion. By accommodating the cover member, the portion of the cutting blade other than the blade portion can be covered with the cover member, and it is possible to prevent an operator from inadvertently touching the blade portion of the cutting blade.

According to the invention of claim 6, since the frame is made of the metal material, the frame is not deformed even if the cutting work is performed in a high temperature environment, and the reliability can be improved.

According to the invention of claim 7, since the blade portion of the cutting blade is inclined so as to face forward and downward in the cutout portion, the object to be cut fitted in the cutout portion is inclined as described above. It becomes possible to cut the object to be cut surely while moving along the blade portion.

According to the invention of claim 8, by opening the notch at an angle of 20 to 30 °, it is possible to smoothly insert the end of the sheet-shaped object to be cut into the notch. Therefore, the cutting work can be further facilitated.

[Brief description of drawings]

FIG. 1 is a front view of a cutter according to an embodiment of the present invention.

FIG. 2 is a rear view of the cutter.

FIG. 3 is an exploded perspective view of a cutter.

FIG. 4 is a perspective view showing a usage state of a cutter.

FIG. 5 is a front view showing a conventional example.

[Explanation of symbols]

 A cutter 1 frame 2 gripping part 3 wide part 5 notch part 6 guide part 7 blade mounting part 9 cutting blade 9a blade part 11 cover member 13 fastening mechanism (fastening means) B object to be cut

Claims (8)

[Scope of utility model registration request] 1. A cutter for cutting a sheet-shaped object to be cut, which is spread on an upper surface of a floor, a work table, etc., wherein a gripping portion which can be gripped by hand is formed on a rear upper portion, while a front lower portion is formed. A frame formed with a notch for opening and guiding the object to be inserted and guiding the object to be cut, and a vertically extending cutting blade attached to the front part of the frame, The blade has a blade portion that is arranged so as to face the rear side in the cutout portion, and that the object to be cut fitted in the cutout portion is configured to be cut by the blade portion. Characteristic cutter. 2. The holding portion of the frame is a wide plate extending obliquely upward toward the rear side, and the rear end portion of the frame is provided with a wide portion wider than other portions. The cutter according to claim 1. 3. The cutting blade is a substantially circular plate-like member having a blade portion on the outer periphery and fixed to the frame at the center portion by a fastening means so as not to be rotatable, and the fastening means is fastened. The cutter according to claim 1 or 2, wherein the position of the blade portion that faces the inside of the cutout portion can be changed by rotating the cutting blade when the cutting is released. 4. The cutter according to claim 1, 2 or 3, wherein the lower portion of the cutout portion is formed as a tapered tapered guide portion that narrows rearward. 5. A blade mounting portion is formed in a concave shape on one side surface of the front portion of the frame, and a cutting blade and a cover member for covering the cutting blade with a portion other than the blade portion in the notch are accommodated in the blade mounting portion. The cutter according to claim 1, 2, 3, or 4, characterized in that it is provided. 6. The cutter according to claim 1, wherein the frame is made of a metal material. 7. The cutting blade according to claim 1, wherein the blade portion of the cutting blade is arranged so as to be inclined downward toward the front in the cutout portion. cutter. 8. The cutout portion is opened at an angle of 20 to 30 °.
The cutter according to 6 or 7.