JP2005076394A - Joint cutter device and its cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint cutter device for efficiently cutting an adhesive portion between a joint and a seal material. <P>SOLUTION: A blade holder 15 is rockingly supported on a base plate 11 integrally attached to a casing body 3 in which a motor is mounted. Blade bodies 29 are detachably provided at the front end of the blade holder 15, and they have blade portions 35, 37 protruded crossing the longitudinal direction of the blade holder 15. Cutting edges are provided on both sides of the blade portions 35, 37 and the blade bodies are attached to both sides of the blade holder 15. The blade portions of both blade bodies are positionally shifted in the longitudinal direction of the blade holder. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a joint cutter device and a cutter for use in cutting a bonding portion between a joint and a sealing material when a sealing material such as a caulking seal filled in the joint is removed from the joint.

When a sealing material such as a caulking seal filled in the joint is peeled off, a joint cutter device is used to cut an adhesive portion between the joint and the sealing material. The joint cutter device is configured to vibrate so as to oscillate a blade holder provided with a blade, and the oscillation of the blade holder converts the rotational motion of the motor into a oscillating motion via an eccentric mechanism. (For example, refer to Patent Document 1).
JP 2002-331517 A

  The configuration described in Patent Document 1 includes an eccentric rotating part rotatably supported by an eccentric part of an output shaft of a motor in a fitting hole provided in a swinging member that is swingably provided via a pivot. The eccentric rotation of the eccentric rotating portion is converted into a swinging motion (reciprocating rotational motion) of the swinging member. And it is the structure which attached a pair of braid | blade to the said pivot. Therefore, in the above configuration, when the motor is driven to rotate, the eccentric rotating portion rotates, the swinging member swings around the pivot, and the pair of blades attached to the pivot swing integrally. .

  In the above configuration, when the sealing material is cut by hitting the sealing material in the joint with the tip of the blade swung around the pivot, the sealing material is excellent in elasticity like rubber Has a problem in cutting ability. Further, there is a minute gap between the fitting hole of the swinging member and the eccentric rotating part, and noise caused by an impact between the inner peripheral surface of the fitting hole and the eccentric rotating part is generated when the sealing material is cut. There is a problem that it is likely to occur.

  Furthermore, when cutting the adhesive portion between the sealing material and the joint with a pair of blades, since the sealing material is compressed and sandwiched by a pair of opposed blades, the resistance when rocking the blade is increased, There is a problem that it is troublesome to remove the sealing material between the pair of blades when the sealing material is cut to an appropriate length.

  The present invention has been made in view of the conventional problems as described above, and a blade holder is provided on a base plate integrally attached to a casing body with a built-in motor so as to be swingable. A blade portion body provided on the side so as to be detachable and replaceable is provided with a blade portion protruding in a direction intersecting the longitudinal direction of the blade holder, and cutting blades are provided on both sides of the blade portion.

  Further, according to the present invention, in the joint cutter device described above, the blade body is attached to both sides of the blade holder, and the blade portions of the blade bodies are provided with their positions shifted in the longitudinal direction of the blade holder. It is a configuration.

  Further, the present invention provides a blade holder that is swingably supported on a base plate that is integrally attached to a casing body that includes a motor, and a blade body that includes a blade portion on the tip side of the blade holder. An eccentric rotating part rotated by the motor is provided in a fitting hole provided in the blade holder for swinging the blade holder so that the blade holder can be swung, and the eccentricity is provided at a position opposed to the fitting hole. It is the structure provided with the elastic member for contact | abutting to the outer peripheral surface of a rotation part, and transmitting the displacement to one direction of the said eccentric rotation part to the said blade holder.

  In the joint cutter device according to the present invention, a guide roller that can roll along the joint is provided on the base plate so as to be movable in the axial direction of the guide roller.

  Further, the present invention is the above-described joint cutter device, wherein the sliding rod and the handle that support the guide roller are detachably attached to a handle attaching portion provided on the base plate.

  Further, the present invention is a cutter that can be attached to and detached from a blade holder that is swingably provided in a joint cutter device, and is attached to a blade body that is attached to and detached from the blade holder. Are provided with a blade portion that protrudes in a direction intersecting the longitudinal direction of the blade holder, and cutting blades are provided on both sides of the blade portion.

  Moreover, this invention is the structure which provided the 2nd blade part on the opposite side of the said blade part with which the said blade part main body was equipped in the said cutter.

  Further, in the cutter, in the cutter unit, the blade unit body includes a plurality of large-diameter attachment / detachment holes through which a fixing tool provided in the blade holder can be inserted, and slots connected to the attachment / detachment holes are provided in the blade part body. This is a configuration provided for.

  According to the present invention, when the adhesive portion between the sealing material and the joint is cut by the cutting blade provided on the blade portion of the blade body provided on the tip side of the blade holder, the swing direction on the tip side of the blade holder is It is approximately equal to the longitudinal direction of the blade portion, and is cut by reciprocating movement of the blade portion in the longitudinal direction, so that the bonded portion between the joint and the sealing material can be easily cut.

  In addition, when the joint between the joint and the sealing material is cut by the blade provided on the pair of blade main bodies attached to the blade holder, the sealing material is compressed and sandwiched between the pair of blades. Therefore, it is possible to suppress an increase in resistance at the time of cutting, so that smooth cutting can be performed and the removal of the sealing material from between the pair of blade portions can be performed smoothly.

  Further, when the blade holder is swung, the minute gap between the inner peripheral surface of the fitting hole provided in the blade holder and the eccentric rotating part is absorbed by the elastic member, and noise such as impact noise can be suppressed. It can be done.

  Referring to FIG. 1, a joint cutter device 1 according to an embodiment of the present invention includes a casing body 3 with an internal motor, and an output shaft 5 that is rotated by the motor is rotatable in the casing body 3. Is provided. An eccentric cam 7 is integrally attached to the output shaft 5, and a bearing as an eccentric rotating portion 9 is rotatably fitted to the eccentric cam 7.

  A base plate 11 is integrally attached to the casing body 3, and an intermediate portion of the blade holder 15 is supported on a support shaft 13 attached to the base plate 11 so as to be swingable (rotatable) via a bearing. Has been. A fitting hole 17 is formed on the base end side of the blade holder 15, and the eccentric rotating part 9 is loosely fitted in the fitting hole 17. That is, the eccentric rotating part 9 absorbs the displacement in the longitudinal direction of the blade holder 15 and transmits the displacement in the direction orthogonal to the longitudinal direction to the blade holder 15. It is inserted in.

  Then, the opposed portion of the inner peripheral surface of the fitting hole 17 in the direction orthogonal to the longitudinal direction of the blade holder 15 abuts on and comes into contact with the outer peripheral surface of the eccentric rotating portion 9 to perform the eccentric rotation. Elastic members 19 for transmitting the displacement of the portion 9 in the orthogonal direction to the blade holder 15 are provided.

  More specifically, the elastic member 19 is made of a metal plate or the like, and comes into contact with the inner peripheral surface of the fitting hole 17 formed in the blade holder 15 as shown in an enlarged view in FIG. The inner surface contact portion 19A is curved so as to protrude so that the outer surface contact portion 19B that contacts the outer peripheral surface of the eccentric rotating portion 9 is curved on both sides of the inner surface contact portion 19A. . And it is the structure provided with the clamping piece 19C which elastically clamps the said blade holder 15 from both sides following the outer surface contact part 19B of this both sides.

  That is, the elastic member 19 has a generally ω shape, the inner surface contact portion 19A presses against the inner surface of the fitting hole 17 of the blade holder 15, and the outer surface contact portion 19B rotates eccentrically. The structure in which the outer peripheral surface of the portion 9 is pressed and brought into contact absorbs the gap between the eccentric rotating portion 9 and the fitting hole 17. When the gap interval fluctuates due to fluctuations in the load acting on the blade holder 15, the inner surface abutting portion 19A is crushed and can easily cope with fluctuations in the gap. It is.

  As shown in FIG. 1, the blade holder 15 is bent substantially in a Z shape, and a cutter (blade) 23 is attached to the tip end side through a plurality of fixtures 21A and 21B so as to be detachable and replaceable. . The fixtures 21A and 21B are configured such that a support pin 25 having projecting portions 25A and 25B projecting on both sides of the blade holder 15 is integrally fixed to the blade holder 15, A nut 27 as a tightening and fixing member is screwed to both the projecting portions 25A and 25B.

  The cutter 23 includes a blade body 29 that is detachable from the blade holder 15. The blade body 29 has a large diameter through which a nut 27 provided in the fixtures 21 </ b> A and 21 </ b> B can be inserted. Removable holes 31A and 31B are formed, and a slot 33A (see FIG. 5) slightly wider than the diameter of the support pin 25 is formed in one of the distal removable holes 31A. It is formed slightly longer in the part side direction. The other attachment / detachment hole 31B on the base end side communicates with a slot having the same length in the same direction as the slot 33A, and an arc-shaped slot 33B centering around the end of the slot 33A. Is provided.

  A first blade portion 35 projecting in a direction intersecting the longitudinal direction of the blade holder 15 when the blade portion body 29 is attached to the blade holder 15 at the distal end side of the blade body 29. And the 2nd blade part 37 is provided. The first blade portion 35 is configured to include cutting blades 39 and 41 on both sides of the inner portion and the outer portion when attached to the blade holder 15, respectively. The outer cutting edge 41 is formed in a convex arc shape having a large arc shape, and the base portion of the first blade section 35 is formed on the convex arc-shaped curved section 41A on the distal end side of the first blade section 35. It is the structure which provided the linear part 41B of the side continuously. That is, the overall shape is generally a bird's beak.

  The second blade portion 37 has a shape protruding in a triangular shape toward the distal end side of the blade body 29 on the opposite side of the first blade portion 35, and the linear portion 43A of the cutting blade 43 is When attached to the blade holder 15, the tip end side 43 </ b> B is inclined with respect to the longitudinal direction of the blade holder 15, and the tip end side 43 </ b> B of the cutting blade 43 is formed in an arc shape.

  The cutter 23 is attached to and detached from the blade holder 15 as follows. That is, when the nuts 27 in the fixtures 21A and 21B are in a loosened state, the blades 15 and the cutter 23 are brought into contact with each other by inserting the nuts 27 relatively into the attachment / detachment holes 31A and 31B in the cutter 23. The cutter 23 is relatively moved so that the support pin 25 is engaged with the slot 33A, and the cutter 23 is appropriately rotated around the support pin 25 to tighten the nut 27. As shown in FIG. 2, the cutter 23 can be integrally fixed to the blade holder 15.

  At this time, the cutter 23 can be attached to a desired side surface with respect to the blade holder 15, and the attachment angle with respect to the blade holder 15 can be adjusted. In some cases, the cutters 23 can be attached to both sides of the blade holder 15.

  As shown in FIG. 3, handle attachment portions are provided at a plurality of locations of the base plate 11. That is, the handle mounting portion is formed of female screw members 45A and 45B fixed in a protruding state on both sides of the base plate 11. The appropriate female screw member 45A of the female screw members 45A and 45B is provided on the handle 47. A screw portion 49 is detachably screwed. That is, the handle 47 can be attached to one side or the other side of the base plate 11 corresponding to the right or left hand of the operator. Further, depending on whether the first blade portion 35 or the second blade portion 37 of the cutter 23 is used, the handle 47 is selectively provided to one female screw member 45A or the other female screw member 45B. It can be installed.

  That is, in correspondence with the operator's dominant hand, in the case of using the first blade portion 35, in the case of using the second blade portion 37, etc. The handle 47 can be attached to the female screw members 45A and 45B at desired positions corresponding to various situations, such as when the handle 47 may interfere with other walls in the environment where the cutter apparatus 1 is used. It is.

  The other female screw member 45B (female screw member to which the handle 47 is not attached) is inserted with a sliding rod 51 having a male screw portion 51A at the tip portion so as to be movable in the axial direction. The guide roller 53 is supported so as to be rotatable and relatively movable in the axial direction. The guide roller 53 is formed in a generally drum shape so that the cross-sectional shape of the outer peripheral surface exhibits an arc shape or a convex curve so as to roll while being guided by the joint.

  Therefore, when the guide roller 53 is brought into contact with the joint, a part of the outer peripheral surface of the guide roller 53 slightly enters the joint, so that the guide roller 53 can be easily moved along the joint. Is. That is, the guide roller 53 can be used by being pressed against the joint.

  Therefore, in a state where the guide roller 53 is pressed against the joint, the casing body 3 is rotated in the clockwise direction or the reverse direction in FIG. It is possible to easily adjust the cutting depth of the second blade portions 35 and 37. Moreover, the movement along the joint can be easily performed.

  By the way, the sliding rod 51 is slidable in the axial direction with respect to the female screw member 45B when the male screw portion 51A is screwed through the female screw member 45B. When the handle 47 is attached to the other female screw member 45B, the sliding rod 51 can be slidably attached to one female screw member 45A. That is, the sliding rod 51 that supports the handle 47 and the guide roller 53 is detachable and replaceable with respect to the female screw members 45A and 45B as the handle attachment portions.

  A switch 55 such as a toggle switch is provided on the end face of the casing body 3 in order to turn on and off a motor (not shown) built in the casing body 3 in the joint cutter device 1. The casing body 3 is provided with a switch operation means 57 so that the switch 55 can be turned on and off by the operator.

  More specifically, an annular engagement portion 63 provided in the intermediate portion of the operation lever 61 is rotatably engaged with a circular protrusion 59 provided in the intermediate portion in the longitudinal direction of the casing body 3. In addition, on the base end side of the operation lever 61, a finger hooking portion 65 is provided for hooking the operator's finger holding the casing body 3. The distal end portion of the operation lever 61 is appropriately bent so as to reach the switch 55, and an engagement groove 67 that engages the knob 55A of the switch 55 is formed in the bent portion. is there.

  In order to always bias the knob 55A to the OFF side, a biasing means such as a torsion spring that pivots and biases the operation lever 61 in the OFF direction is provided between the protruding portion 59 and the operation lever 61. It is provided. In addition, when the operation lever 61 is rotated in the direction in which the switch 55 is turned on, a lock unit is provided to hold the switch 55 in the ON state.

  Examples of the locking means include a configuration in which a concave portion provided on one of the casing body 3 and the operation lever 61 is appropriately engaged with a convex portion provided on the other, and a mechanism for locking the operation lever 61. Various configurations such as a configuration provided with an elastic claw provided with a stopper can be adopted.

  In the configuration as described above, the operator holds the handle 47 with one hand, and the finger of the other hand holding the casing 3 is hung on the finger hooking portion 65 of the operation lever 61 to resist the urging force of the torsion spring. When the switch 55 is turned in the ON direction, the knob 55A of the switch 55 is operated in the ON direction by the tip of the operation lever 61, and the switch 55 is turned ON. The operation lever 61 is held in a state where the switch 55 is turned on by the locking means.

  When the operating lever 61 is operated to release the locked state by the locking means (for example, the elastic engagement between the concave portion and the convex portion), the operating lever 61 turns off the switch 55 by the urging force of the torsion spring. The operation lever 61 is held in a state where the switch 55 is always OFF by the action of the torsion spring.

  As already understood, in the joint cutter device according to the present embodiment, the handle 47 is held with one hand, and the switch 55 is turned on and off with the finger of the other hand holding the casing body 3. The safety can be improved compared to the case where the switch 55 is directly turned on and off with the other hand. Further, the switch 55 is urged to rotate in the direction in which the operation lever 61 always turns off the switch 55 by the urging force of the torsion spring, and the switch 55 is normally held in the OFF state. The property is improved.

  When the switch 55 is turned on as described above, the motor is started and the output shaft 5 is rotated. Since the eccentric cam 7 rotates eccentrically by the rotation of the output shaft 5, the blade holder 15 is oscillated about the support shaft 13 via the elastic member 19. Accordingly, the cutter 23 attached to the distal end side of the blade holder 15 performs a swinging motion integrally with the blade holder 15.

  After starting the motor as described above, the guide roller 53 is pressed against the target joint, and the inclination of the casing body 3 is adjusted with the guide roller 53 as a fulcrum, for example, the first blade portion provided in the cutter 23 35 is pushed into the joint between the joint and the sealing material in the joint, and the depth of cut is adjusted.

  Thereafter, by pulling the casing body 3 along the joint, the cutting portion 39 provided in the first blade portion 35 of the cutter 23 cuts the adhesive portion, and conversely, the casing body 3 is pushed. Thus, the adhesive portion is cut by the cutting blade 41 provided in the first blade portion 35 of the cutter 23.

  At this time, since the first blade portion 35 protrudes in a direction substantially orthogonal to the longitudinal direction of the blade holder 15, the protruding direction of the first blade portion 35 is the tip of the blade holder 15. It is a direction that is substantially the same as the swinging direction, and when cutting the bonded portion between the joint and the sealing material by the cutting blades 39, 41, the bonded portion is cut as if sawing is performed. It is. Therefore, even if the sealing material is as elastic as rubber, the bonded portion can be cut efficiently.

  When the adhesive portion is cut by the second blade portion 37, the direct portion 43 </ b> A of the cutting blade 43 in the second blade portion 37 is in the swing direction on the tip side of the blade holder 15. Although it is inclined, for example, it is inclined close to a direction orthogonal to the swinging direction, and therefore, the cutting portion 43 is cut by hitting the adhesive portion. That is, the second blade portion 37 performs a cutting action similar to an aspect of cutting an object with a scissors, for example.

  As already understood, when cutting the joint between the joint material and the sealing material, the first blade part 35 or the second blade part 37 is provided corresponding to the properties, characteristics, joint structure, etc. of the sealing material. It can be used selectively. Further, as described above, since the handle 47 can be attached to a desired side surface of the base plate 11, it is easy to operate regardless of whether it is left-handed or right-handed, and the first blade portion 35 and the second blade portion. Even when 37 is selectively used, it can be easily handled.

  As described above, for example, when the joint between the joint and the sealing material is cut by the first blade portion 35, the guide roller 53 can be rolled and moved along the joint. When the cutter 23 moves relative to the guide roller 53 in a direction orthogonal to the longitudinal direction of the joint due to the shape of the joint, etc., the guide roller with respect to the sliding rod 51 that supports the guide roller 53 53 is relatively movable in the axial direction, and the sliding rod 51 is movable in the axial direction with respect to the base plate 11, so that the guide roller 53 and the cutter 23 are relative to the longitudinal direction of the joint. Therefore, it can be easily moved.

  That is, as shown in FIG. 3, the guide roller 53 is located outside the cutter 23 (on the right side in FIG. 3) or inside the cutter 23 (on the left side in FIG. 3). The guide roller 53 can roll along the joint even when the cutter 23 cuts the adhesive part on one side of the joint or the adhesive part on the other side. At this time, the end of the sliding rod 51 does not protrude greatly to the outside of the cutter 23.

  As described above, the blade holder 15 is swung around the support shaft 13 and the joint portion between the joint and the sealing material is cut by the first blade portion 35 or the second blade portion 37 provided in the cutter 23. Even when the load fluctuates, the elastic member 19 absorbs the load fluctuation, so that the inner peripheral surface of the fitting hole 17 in the blade holder 15 and the outer peripheral surface of the eccentric rotating portion 9 collide with each other. Therefore, the generation of noise such as impact noise can be suppressed.

  FIG. 6 shows a state in which cutters (blades) 69 and 71 are attached to both sides of the blade holder 15, respectively. Note that the same components as those described above are denoted by the same reference numerals, and redundant description is omitted.

  The cutters 69 and 71 are configured to include a blade portion 73 having substantially the same shape as the first blade portion 35 of the cutter 23 described above at the tip portion. In order to provide the blade holder 15 with its position shifted in the longitudinal direction, the blade portion main body 71B of the cutter 71 is provided longer than the blade portion main body 69B of the cutter 69. Further, bent stepped portions 69A and 71A are formed between the blade body 69B and 71B and the blade 73.

  The blade main bodies 69B and 71B of the cutters 69 and 71 are provided with the same attachment / detachment holes 31A and 31B as the attachment / detachment holes 31A and 31B provided in the cutter 23 and slots 33A and 33B. The blade holder 15 is detachably attached by fixtures 21A and 21B engaged with the slots 33A and 33B.

  In the above configuration, by appropriately combining the cutters 69 and 71 having different dimensions of the step portions 69A and 71A, the interval between the blade portions 73 in the cutters 69 and 71 is adjusted according to the width of the target joint. It is possible. And when cut | disconnecting the adhesion part of a joint and a sealing material with said pair of cutters 69 and 71, cutting | disconnection of the adhesion part of both sides can be performed simultaneously.

  At this time, the blade portions 73 of the cutters 69 and 71 are displaced in the longitudinal direction of the joint, so that the sealing material is not compressed and held by the blade portions 73 of the pair of cutters 69 and 71. is there. That is, since the blade portions 73 of the cutters 69 and 71 are displaced, the sealing material is relatively meandering and can be easily inserted between the blade portions 73 of the pair of cutters 69 and 71. It is something that can get out of it, and never get caught in it.

  As can be understood from the above description, according to the present embodiment, even when the sealing material is excellent in elasticity such as rubber, it can be cut as if it is cut with a saw and cut efficiently. It is something that can be done. Further, the gap existing between the fitting hole of the blade holder and the eccentric rotating part is absorbed, and the generation of noise in the part can be prevented.

  Moreover, when cutting the adhesive portion between the sealing material and the joint using a pair of cutters, it can be cut without causing the sealing material to be sandwiched between the blade portions of the pair of cutters. The problem can be solved.

  By the way, the present invention is not limited to the embodiment as described above, and can be implemented in other forms by making appropriate changes. That is, as shown in FIG. 7, the first and second blade portions 77 </ b> A and 77 </ b> B are substantially circular on both sides (opposite sides) of the tip portion of the blade body 75. It is set as the structure which protruded. For example, the cutting blade 79 in the first blade portion 77A can be formed into a saw blade shape, and the cutting blade 81 in the second blade portion 77B can be formed into a sharp blade. That is, the shapes of the cutting blades 79 and 81 in the first and second blade portions 77A and 77B can be made different.

It is the plane explanatory view which cut and showed a part of cutter device for joints concerning the embodiment of the present invention. It is front sectional explanatory drawing which showed the principal part same as the above. It is side explanatory drawing same as the above. It is an expanded sectional explanatory view of an elastic member. It is explanatory drawing of a cutter. It is explanatory drawing of a cutter at the time of attaching a pair of cutter to the both sides of a blade holder. It is explanatory drawing of the cutter which concerns on 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cutter apparatus for joints 3 Casing main body 9 Eccentric rotation part 11 Base plate 13 Support shaft 15 Blade holder 17 Fitting hole
19 Elastic member 23 Cutter (blade)
29 Blade body 35 First blade portion 37 Second blade portion

Claims (8)

  The blade holder is swingably supported on a base plate that is integrally attached to a casing body that has an internal motor, and the blade holder body that is detachably replaceable on the front end side of the blade holder is provided with a length of the blade holder. A joint cutter apparatus comprising a blade portion projecting in a direction intersecting with the direction, and having cutting blades on both sides of the blade portion.   The joint cutter device according to claim 1, wherein blade main bodies are attached to both sides of the blade holder, and the blade portions in the two blade main bodies are provided with their positions shifted in the longitudinal direction of the blade holder. A cutter device for joints.   A blade holder is provided on a base plate that is integrally attached to a casing body with a built-in motor so that the blade holder can swing, and a blade body provided with a blade portion is provided on the tip side of the blade holder in a removable manner. An eccentric rotating part rotated by the motor is provided in a fitting hole provided in the blade holder for swinging the blade holder, and the outer peripheral surface of the eccentric rotating part is located at a position opposed to the fitting hole. A joint cutter apparatus comprising an elastic member for contacting and transmitting a displacement in one direction of the eccentric rotating portion to the blade holder.   The joint cutter device according to claim 1, 2, or 3, wherein a guide roller that is rollable along the joint is provided on the base plate so as to be movable in an axial direction of the guide roller. Cutter device.   5. The joint cutter device according to claim 4, wherein the sliding rod and handle supporting the guide roller are detachably attached to a handle attachment portion provided on the base plate.   A cutter that is attachable to and detachable from a blade holder that is swingably mounted on a joint cutter device, and is attached to the blade holder body that is attached to and detached from the blade holder in the longitudinal direction of the blade holder. A cutter comprising: a blade portion that protrudes in a direction that intersects with the blade portion, and a cutting blade on both sides of the blade portion.   The cutter according to claim 6, wherein a second blade portion is provided on the opposite side of the blade portion provided in the blade body.   The cutter according to claim 6 or 7, wherein the blade body includes a plurality of large-diameter attaching / detaching holes through which a fixing tool provided in a blade holder can be inserted, and a slot communicating with each attaching / detaching hole. A cutter that is provided in the main body.

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