JP4586979B2 - Cutting tool - Google Patents

Description

  The present invention relates to a cutting tool.

  As is well known, flat materials such as cloths and heat insulating materials used in buildings (hereinafter referred to as “objects to be cut”) are cut to the required size at the construction site. When the cutter knife is moved vigorously along the ruler that is in close contact with the blade, the cutter knife's cutting blade may get over the ruler and hurt your hand, or the cutting blade's trajectory may be misaligned and cannot be cut accurately. . For this reason, many cutting tools have been developed that have been devised so that the cutting blade can be accurately aligned with the ruler when the object to be cut is cut.

  For example, in Patent Document 1 described later, a cutter in which a wheel having a groove formed on a rotating side surface is rotatably attached to a handle side surface, a rail parallel to a side is fixed to the upper surface, and the blade of the cutter or the wheel A cutter tool comprising a ruler having a stopper projecting at its end, and rolling the wheel along the rail in a state where the blade of the cutter is along the side of the ruler to move the cutter linearly Is disclosed.

  Further, Patent Document 2 described later has a cutter that presses and cuts papers, and a ruler that is provided with a groove that guides the cutter, and the cutter includes a protrusion that fits into the groove. A cutter with a ruler is disclosed.

  However, in the cutter tool described in Patent Document 1, since the force of the cutter's cutting blade overcoming the ruler is suppressed by placing the cutting blade along the side of the ruler, if the ruler does not have a certain thickness, The cutting blade cannot follow the side of the ruler in a stable state. For this reason, the cutting blade is exposed from the object to be cut by the thickness of the ruler and shakes in a direction perpendicular to the cutting direction. There is a problem that the cut surface of the object to be cut is not smooth.

Further, the cutter with a ruler described in Patent Document 2 also requires the ruler to be thick to some extent in order to form a groove in the ruler. For this reason, there is a problem similar to that of the cutter tool described in Patent Document 1. Further, when the groove is formed on the ruler, it is necessary to open the groove upward, and there is a problem in that the sliding of the cutter is hindered when dust enters the groove.
Japanese Utility Model Publication No. 2-70993, page 1, Fig. 2 Japanese Utility Model Publication No. 60-27870, page 1, Fig. 1

  Therefore, the present invention has a technical problem to obtain a cutting tool in which the cutting blade is not easily shaken in a direction perpendicular to the cutting direction and can always slide the sliding body smoothly with respect to the ruler. As a result of repeating trial production and experimentation, a ruler with an L-shaped cross section having a guide plate that rises vertically from a bottom plate that is in close contact with the object to be cut, and a downward opening to fit the guide plate of the ruler If the cutting blade is fixed along one inner surface of the guide groove so as to protrude downward from the guide groove, the guide groove of the slide body In a state in which the cutting blade is slidably fitted to the guide plate of the ruler, the inner surface of the guide groove to which the cutting blade is fixed faces the outer surface of the guide plate, and the cutting blade is Can move along the side Since, obtained a finding should Katsumoku that hardly blur in a direction perpendicular to the cutting blade cutting direction, it is obtained by achieving the technical problems.

  The technical problem can be solved by the present invention as follows.

That is, the cutting tool according to the present invention provides a space between an L-shaped ruler provided with a guide plate that rises vertically from a bottom plate that is in close contact with the object to be cut, and a pair of side wall plates that have the same bottom height. rulers by positioning Te guide consists of a sliding body which guide groove that opens downward fit is formed on the plate, the said sliding body the one cutting blade for cutting the object to be cut constitute a guide groove together are fixed and along the inner surface of the hand sidewall plate is rotatably axially retaining the inner surface of the side wall plates that make up the guide groove so as to protrude downward from the guide grooves, A regulating bolt that changes the inclination angle of the cutting blade extends toward the cutting blade that has been screwed through the sliding body so that its tip protrudes into the guide groove and rotated in the direction of opening the blade edge. The tip of the lever touches the cutting blade By rotating the restriction bolt and changing the length of the tip protruding into the guide groove, the inclination angle of the cutting blade in contact with the tip of the restriction bolt can be changed. and which, the sliding body of the guide groove of the ruler guide plate the inner surface of one of the side wall plates to which the cutting blade is fixed constituting the guide groove in a state where fitted slidably to the guide By facing the outer surface of the plate, the cutting blade moves along the outer surface in a state of being sandwiched between the both side surfaces.

  According to the present invention, one inner side surface of the guide groove to which the cutting blade is fixed is fitted to the outer side surface of the guide plate in a state in which the guide groove of the sliding body is slidably fitted to the guide plate of the ruler. Since they faced each other, the exposed portion of the cutting blade without being inserted into the object to be cut at the time of cutting is sandwiched by both side surfaces, and the cutting blade does not shake in the direction perpendicular to the cutting direction. For this reason, an excessive load is not applied to the cutting edge of the cutting blade, the cutting blade will not be broken, and the cutting blade will last longer. In addition, the cut surface of the object to be cut becomes smooth. Furthermore, since the cutting blade is not exposed, it is difficult to be injured. Further, since the guide groove of the sliding body is opened downward, even if dust or the like enters the guide groove, it is not accumulated in the guide groove, and the sliding body can be smoothly slid against the ruler.

  Therefore, it can be said that the industrial applicability of the present invention is very high.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.

  FIG. 1 is a front view showing a cutting tool according to the present embodiment. FIG. 2 is an exploded perspective view showing a sliding body of the cutting tool shown in FIG. FIG. 3 is a front view showing the sliding body shown in FIG. 4 is a cross-sectional view taken along the line AA of the sliding body shown in FIG. FIG. 5 is a perspective view showing a ruler of the cutting tool shown in FIG. In these drawings, reference numeral 1 denotes a ruler 5 having an L-shaped cross section provided with a guide plate 4 that rises vertically from a bottom plate 3 that is in close contact with the body 2 to be cut, and a downward opening so as to fit the guide plate 4 of the ruler 5. A cutting tool including a sliding body 7 provided with a guide groove 6.

  As shown in FIG. 2, the sliding body 7 is spaced apart from a pair of side wall plates 9, 10 having a notch 8 in the lower portion and an inner side upper portion of the one side wall plate 9 facing the other side wall plate 10. The upper end 13 is positioned between the pair of restricting plates 11 and 12 fixed in the state and the restricting plates 11 and 12, and the cutting edge 14 is directed to the side where the notches 8 of the pair of side wall plates 9 and 10 are formed. The cutting blade 15 fixed so as to be along the inner side surface of one side wall plate 9 in the state where the inner wall faces the one side wall plate 9 in the other side wall plate 10 in a state where it overlaps with the pair of regulating plates 11 and 12. It is comprised from the partition plate 16 fixed to the side part upper part, and each member is clamp | tightened and fastened with the volt | bolts 17, 18, 19, and 20. As shown in FIG.

The cutting blade 15 is rotatably supported along the inner surface of the one side wall plate 9 with a bolt 19 passed through a through hole 21 provided in the upper end portion 13 as a rotation axis. Further, the pair of regulating plates 11 and 12, regulating the sides 22 and 23 which fan out downward around the rotation axis of the cutting blade 1 5 located between the two regulating plates 11 and 12 are formed. Accordingly, as shown in FIG. 4, when the cutting blade 15 is rotated in the direction of closing the blade edge 14, the cutting edge of the cutting blade 15 is placed on the restriction side 22 of the restriction plate 11 located on the blade edge 14 side of the cutting blade 15. 14 abuts, and the cutting blade 15 is accommodated in the guide groove 6 in a state where the lower end portion 24 is viewed from the notches 8 of the side wall plates 9 and 10. Further, when the cutting blade 15 is rotated in the direction to open the blade edge 14, the cutting blade 15 is brought into contact with the restriction side 23 of the restriction plate 12 located on the cutting blade 14 and the cutting blade 15. Makes the lower end 24 protrude downward from the guide groove 6 in an inclined state. The cutting blade 15 is difficult to rotate and can be fixed when the bolts 19 are tightened strongly.

  The partition plate 16 plays a role of adjusting the width of the guide groove 6 of the sliding body 7 and is formed slightly thicker than the thickness of the guide plate 4 of the ruler 5. Thereby, the guide groove 6 of the sliding body 7 can be slidably fitted into the guide plate 4 of the ruler 5.

  Note that the depth of the guide groove 6 of the sliding body 7 matches the height of the guide plate 4 of the ruler 5.

  Next, the usage method of the cutting tool which concerns on this Embodiment is demonstrated.

  First, the outer surface 26 of the guide plate 4 is fixed along the cutting portion in a state where the bottom plate 3 of the ruler 5 is in close contact with the workpiece 2. Subsequently, the cutting blade 15 of the sliding body 7 is rotated in the direction of opening the blade edge so that the lower end 24 protrudes downward from the guide groove 6, and then the guide groove 6 of the sliding body 7 is fitted to the guide plate 4 of the ruler 5. Include. At this time, the inner surface of one side wall plate 9 to which the cutting blade 15 in the guide groove 6 of the sliding body 7 is fixed faces the outer surface 26 of the guide plate 4 of the ruler 5. It is set as the state along the outer side surface 26. As a result, the lower end 24 of the cutting blade 15 protruding from the guide groove 6 of the sliding body 7 is inserted into the workpiece 2 and the sliding body 7 is slid along the guide plate 4 of the ruler 5. The cutting blade 15 moves and the object 2 is cut.

  Note that the shape of the bottom plate 3 of the ruler 5 is not limited to a rectangular shape, but may be other shapes such as a triangular shape. Further, the ruler 5 may be provided with a handle on the top surface side of the bottom plate 3.

Embodiment 2. FIG.

  This embodiment is a modification of the sliding body in the cutting tool according to the first embodiment. FIG. 6 is a cross-sectional view showing the sliding body according to the present embodiment. In this figure, the same reference numerals as those in FIGS. 1 to 5 denote the same or corresponding parts.

  In the sliding body 7 shown in FIG. 6, a regulation bolt 28 is screwed to a portion of the partition plate 16 that is positioned on the side of the cutting blade 15 on the groove 25 side so that the tip 27 protrudes into the guide groove 6. The regulating bolt 28 extends toward the cutting blade 15 groove 25 rotated in the direction of opening the cutting edge 14, and the tip 27 of the regulating bolt 28 is in contact with the cutting blade 15 groove 25. Thereby, the inclination angle of the cutting blade 15 rotated in the direction to open the blade edge 14 can be adjusted by adjusting the length of the tip portion 27 protruding into the guide groove 6 by rotating the regulating bolt 28. .

  According to the present embodiment, since the inclination angle of the cutting blade rotated in the direction of opening the blade tip by the regulating bolt can be adjusted, the length of the lower end portion of the cutting blade protruding downward from the guide groove of the sliding body is cut. It can be changed according to the length of the body.

It is the front view which showed the cutting tool which concerns on Embodiment 1. FIG. It is the disassembled perspective view which showed the sliding body of the cutting tool shown in FIG. It is the front view which showed the sliding body shown in FIG. It is AA sectional drawing of the sliding body shown in FIG. It is the perspective view which showed the ruler of the cutting tool shown in FIG. 5 is a cross-sectional view showing a sliding body according to Embodiment 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cutting tool 2 Body to be cut 3 Bottom plate 4 Guide plate 5 Ruler 6 Guide groove 7 Slider 8 Notch 9, 10 Side wall plate 11, 12 Restriction plate 13 Upper end 14 Cutting edge 15 Cutting blade 16 Partition plate 17, 18, 19, 20 Bolt 21 Through-hole 22, 23 Restriction side 24 Lower end portion 25 Mine 26 Outer surface 27 Tip portion 28 Restriction bolt

Claims (1)

A ruler with an L-shaped section with a guide plate that rises vertically from the bottom plate that is in close contact with the object to be cut and a pair of side wall plates with the same height at the bottom are positioned at a distance from each other to fit the guide plate of the ruler. writing consists of a sliding body which open guide grooves are formed downward in the sliding body rotatable relative to the inner surface of one of the side walls of the cutting blade for cutting the object to be cut constitute the guide grooves together are axially fastened are fixed along a inner surface of the side wall plate of the hand that make up the guide groove so as to protrude downward from the guide groove, the restriction of changing the inclination angle of the cutting blade A bolt is threaded through the sliding body so that its tip protrudes into the guide groove and extends toward the cutting blade rotated in the direction of opening the blade tip, and the tip hits the cutting blade. Contact the bolts By changing the length of the tip portion projected into the guide groove by rotation, the distal end portion of the regulating bolt being to change the inclination angle of the cutting blade abutting, of the sliding body guide The inner side surface of one side wall plate to which the cutting blade constituting the guide groove is fixed is opposed to the outer side surface of the guide plate in a state where the groove is slidably fitted to the guide plate of the ruler. The cutting tool moves along the outer surface in a state where the cutting blade is sandwiched between the both side surfaces.

Images