JP2010264004A - Cutter knife - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutter knife capable of cutting an object by pressing a cutting blade on the object always with a constant pressure. <P>SOLUTION: The cutter knife includes: a cutter body 1 having a sliding contact part 20 to slide in contact with the object to be cut; a cutter member 2 having the cutting blade 22 for cutting the object to be cut; a holding member 3 for holding the cutter member 2 with the cutting blade 22 projecting from the cutter body 1; and an urging member 4 for urging the cutter member 1 when the sliding contact part 20 of the cutter body 1 is made to slide in contact with the object to be cut and pressing the cutting blade 22 on the object to be cut with a constant pressure. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a cutter knife, and more particularly to a cutter knife suitable for cutting only one sheet located on the uppermost surface of a plurality of stacked sheets.

  Conventionally, for example, the following is known as a cutter knife.

  That is, in the cutter knife described in Patent Document 1, only one overlapped sheet can be cut so that the protruding dimension of the cutting edge of the cutter member can be finely adjusted.

  Further, in the cutter knife described in Patent Document 2, the cutter member is covered with a covering material and only the blade edge is exposed, so that only one sheet of overlapped paper can be cut.

  Furthermore, in the cutter knife described in Patent Document 3, a pressing bullet piece is provided at the tip of the cutter body, and this pressing bullet piece is elastically deformed to protrude the cutting blade, thereby overlapping the protruding dimension of the cutting blade. Only one sheet can be cut.

  However, in any of the above-mentioned cutter knives, the protruding dimension of the cutting blade is only constant, and if an unreasonable load is applied to the cutting blade during cutting, there is a possibility that problems such as chipping may occur. Also, if the type of cutting object is changed and the cutting condition changes, or the cutting edge itself becomes worse, it must be dealt with by increasing the force of pressing the cutting blade against the paper, Operability deteriorates.

  In particular, in the cutter knife described in Patent Document 1, it is necessary to finely adjust the protruding dimension of the cutting blade according to the difference in the thickness of the paper, but since the difference in the thickness of the paper is slight, It is difficult to respond well. Moreover, in the cutter knife described in the cited documents 2 and 3, it is necessary to prepare a plurality of cutter knives having different projecting dimensions according to the difference in the thickness of the paper.

JP 2007-50215 A Japanese Patent Laid-Open No. 2002-153585 Japanese Patent Laid-Open No. 10-156061

  An object of the present invention is to provide a cutter knife that can always cut by pressing a cutting blade with a constant pressing force.

As a means for solving the above problems, the present invention provides:
Cutter knife,
A cutter body provided with a sliding contact portion that is in sliding contact with the object to be cut;
A cutter member having a cutting blade for cutting the cutting object;
When the sliding contact portion of the cutter body is brought into sliding contact with the object to be cut, the biasing member is pressed to press the cutting blade against the cutting object with a constant pressure.
It is set as the structure provided with.

  With this configuration, the pressing force of the cutter member on the cutting object by the cutting blade can be always set to a constant value regardless of the pressing force on the cutting object by the sliding contact portion of the cutter body. Therefore, for example, when the cutting object is a plurality of stacked sheets, it is possible to reliably cut only a predetermined number of sheets from the uppermost sheet or the uppermost sheet. Further, when the object to be cut is thick, it is possible to make a cut with a certain depth without fail.

  It is preferable to further include a pressing force adjusting member that adjusts a force pressing the cutting blade against the cutting object by the biasing member.

  With this configuration, it is possible to obtain an appropriate pressing force according to the ease of cutting the object to be cut and the sharpness of the cutting edge, and the operability during cutting is not impaired.

The cutter member extends from one end toward the other end, and a cutting edge is formed on one side edge,
The urging member is preferably made of a leaf spring disposed along a side edge portion on the opposite side to the cutting blade of the cutter member.

  With this configuration, it is only necessary to arrange the leaf spring along the cutter member, so that the configuration can be made compact, simple and inexpensive.

The leaf spring includes a pressing portion that presses a side edge of the cutter member,
The pressing force adjusting member is provided so as to be slidable along a leaf spring attached to the cutter body, and includes a contact portion that comes into contact with the leaf spring. It is preferable that the dimension between the contact position with the leaf spring and the pressing portion can be adjusted.

  With this configuration, by simply sliding the pressing force adjusting member and changing the contact position of the contact portion with the leaf spring, the biasing force with the leaf spring can be easily adjusted to push the cutting blade against the object to be cut. The power can be increased or decreased.

  It is preferable to provide the holding member which supports the said cutter member so that rotation is possible in the state which made the cutting blade protrude from the cutter main body.

  With this configuration, when the cutter member is urged by the urging member, the cutter member rotates about the rotation fulcrum and presses the cutting blade against the cutting object. For this reason, the pressing force by a cutting blade can be obtained effectively.

  It is preferable that the holding member can position the cutting blade of the cutter member at least in either the protruding position or the retracted position.

  With this configuration, if the cutter member is moved together with the holding member and the cutting blade is positioned at the protruding position, the object to be cut can be cut, and if it is positioned at the retracted position, the cutting blade does not protrude from the cutter body and is safe. State.

  According to the present invention, when the cutting blade of the cutter member is pressed against the object to be cut, the urging force by the urging member is used. The operability can be stabilized.

It is a partial fracture perspective view of the cutter knife concerning this embodiment. It is a disassembled perspective view of the cutter knife of FIG. It is a front view which shows the cutting state by the cutter knife of FIG. (A) is a partially broken perspective view of the cutter knife showing a state in which the second slider is retracted to increase the size of elastic deformation by the leaf spring, and (b) is elastically deformable by the leaf spring by moving the second slider forward. It is a partially broken perspective view of the cutter knife which shows the state which made the small dimension small. (A) is front sectional drawing which shows the state which retracted the 1st slider and the cutting blade of the cutter member was immersed in the cutter main body, (b) advanced the 1st slider, and the cutting blade of the cutter member was made into the cutter main body. It is front sectional drawing which shows the state made to protrude from. It is a schematic sectional drawing of the cutter knife which concerns on other embodiment. It is a schematic sectional drawing of the cutter knife which concerns on other embodiment. It is a schematic sectional drawing of the cutter knife which concerns on other embodiment. It is a schematic sectional drawing of the cutter knife which concerns on other embodiment.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings. In the following description, terms indicating specific directions and positions (for example, terms including “up”, “down”, “side”, “end”) are used as necessary. These are for facilitating the understanding of the invention with reference to the drawings, and the technical scope of the present invention is not limited by the meaning of these terms. Further, the following description is merely illustrative in nature and is not intended to limit the present invention, its application, or its use.

  1 and 2 show a cutter knife according to this embodiment. This cutter knife is roughly a cutter body 2, a first slider 3 that is an example of a holding member, a leaf spring 4 that is an example of a biasing member, and a pressing force adjusting member that is a first example of a pressing force adjusting member. Two sliders 5 and a stopper member 6 are attached.

  The cutter main body 1 is composed of a first main body 7 and a second main body 8 mounted in the first main body 7.

  The first main body 7 has a long, substantially rectangular parallelepiped shape extending from one end to the other end, and is obtained by molding a synthetic resin. One end surface of the first main body 7 is a flat surface perpendicular to the longitudinal direction. As shown in FIG. 3, the other end surface of the first main body 7 gradually inclines so as to approach a position shifted from the center toward one side as it goes from both sides to the other end. 9 and the second inclined surface 10, and the merging position of both inclined surfaces is constituted by an arcuate surface 11.

  As shown in FIG. 2, the first main body 7 is formed with first guide grooves 12 that connect both end faces. The first guide groove 12 includes a wide portion 12 a and a narrow portion 12 b, and the narrow portion 12 b opens on one side surface of the first main body 7. The narrow portion 12b is connected by a connecting portion 13 at a predetermined dimension from the other end. An escape recess 14 is formed on one inner edge of the narrow portion 12b. An opening 15 that communicates with the first guide groove 12 is formed on the other side surface of the first main body 7 that remains. The opening 15 is a passage for accommodating the leaf spring 4 in the communication hole, and is an attachment receiving portion for slidably attaching the second slider 5.

  The second main body 8 is a long one obtained by pressing a metal material that extends from one end to the other end, and is press-fitted into the first guide groove 12 of the first main body 7 from one end side. The second main body 8 is formed with a second guide groove 16 in which a slider main body 24 of the first slider 3 described later is slidably supported. Similar to the first guide groove 12 of the first main body 7, the second guide groove 16 includes a wide portion 16a and a narrow portion 16b, and the narrow portion 16b also opens in the same direction. In addition, a pair of locking recesses 17 is formed on one inner edge portion constituting the narrow portion 16b, and has a substantially W shape. These locking recesses 17 are used to position the first slider 3 at a retracted position where the cutter member 2 is positioned at the retracted position and an advanced position where the cutter member 2 is positioned at the protruding position, respectively. The other end side of the second main body 8 is constituted by a guide portion 18 in which the tip portion of the cutter member 2 is arranged. The guide portion 18 is formed with a slit 19 in which the cutter member 2 can be disposed, and a sliding contact portion 20 that is flush with the distal end portion (mainly the second inclined surface 10) of the first main body 7 is formed at the distal end portion. Has been. A notch 21 is formed in the upper part of the guide 18, and the edge of the cutter member 2 located in the slit 19 on the side opposite to the cutting edge 22 is positioned so that it can be pushed. Thus, since the sliding contact portion 20 is configured not only at the guide portion 18 but also at the tip portion of the first main body 7, the contact area with respect to the cutting object is increased, and the pressure acting on the cutting object is reduced. can do. That is, if only the guide portion 18 protrudes, the cutting object may be damaged depending on the applied force, but the danger can be avoided by the above-described configuration. However, it is possible to adopt even a configuration in which only the guide portion 18 protrudes.

  The cutter member 2 has a thin plate shape, and one side edge portion is a cutting edge 22. The tip portion of the cutter portion is formed so that the cutting edge 22 side gradually protrudes toward the tip. A circular attachment hole 23 is formed on the rear end side of the cutter member 2.

  The first slider 3 includes a slider main body 24 and a first operation unit 26 integrated with the slider main body 24 via a protrusion 25. The slider main body 24 is plate-shaped, and an inclined surface 24a is formed on the outer surface on one end side, which is inclined in a direction of gradually decreasing the thickness toward the tip. An elastic locking piece 27 is attached to the central portion of the outer surface. The elastic locking piece 27 is formed by bending the leaf spring 4 to form an arcuate protrusion 27a at the center. The first slider 3 can be positioned with respect to the slider body 24 by engaging and disengaging the protrusions 27 a with the respective locking recesses 17 formed in the second body 8. On the other hand, a cylindrical projection 28 is formed on the inner surface of the slider body 24. This protrusion 28 is arrange | positioned at the attachment hole 23 of the cutter member 2, and supports the cutter member 2 so that rocking | fluctuation is possible. The first operation unit 26 is formed on the rear end side excluding the front end side of the slider body 24. The first operation unit 26 has a plurality of grooves formed at predetermined intervals in the longitudinal direction on the surface, and is capable of preventing slipping when operated with a finger, thereby improving operability. A groove is formed on both sides by the first operating portion 26, the slider body 24, and the protrusion 25. The slider body 24 is slidably disposed on the cutter body 1 with the inner edge portions on both sides constituting the narrow portion 16b of the second guide groove 16 of the second body 8 positioned.

  The leaf spring 4 has an elongated plate shape that is inserted from the opening 15 formed in the first main body 7. A locking portion 29 is formed at one end of the leaf spring 4 by being bent at a right angle upward. The locking part 29 is locked in a locking groove (not shown) formed in the opening 15 of the first main body 7 and prevents the leaf spring 4 from being displaced in the longitudinal direction. On the other hand, a pressing portion 30 is formed at the other end of the leaf spring 4 by being bent obliquely downward. The pressing part 30 presses the side edge part of the cutter member 2 located in the slit 19 through the notch part 21 formed in the guide part 18 of the second main body 8.

  The second slider 5 is a block-shaped member that is attached to the opening 15 formed in the first main body 7, and includes a second operation portion 31 and a contact portion 32. The second operation unit 31 is mounted in the opening 15 with the same configuration as the first operation unit 26 of the first slider 3. The abutting portion 32 is located in the first main body 7 through the opening 15 and abuts on the upper surface of the leaf spring 4 disposed there. Then, the position of the contact portion 32 is slid with respect to the opening 15 by operating the second operation portion 31 with a finger, thereby displacing the contact position with the leaf spring 4, and the leaf spring according to the hook law. The urging force by 4 can be adjusted. That is, when the second slider 5 is slid toward one end, the deformable range of the leaf spring 4 becomes longer, and the pressing force of the cutting blade 22 against the cutter member 2 becomes weaker. On the contrary, when the sliding movement is performed toward the other end, the deformable range of the leaf spring 4 is shortened, and the pressing force of the cutting blade 22 against the cutter member 2 is increased. Here, the position of the second slider 5 is set so that a pressing force can be obtained by the cutting blade 22 of the cutter member 2 so that only the uppermost sheet among the sheets stacked as the cutting object can be cut. is doing.

  The stopper member 6 is obtained by integrating an insertion portion 34 having a convex section in the stopper main body 33. The stopper main body 33 is attached to one end of the cutter main body 1 by inserting the insertion portion 34 into the second guide groove 16.

  Then, the assembly method of the cutter knife which consists of the said structure is demonstrated.

  The cutter body 1 is completed by press-fitting and integrating the second body 8 into the first guide groove 12 of the first body 7. In addition, the projection 28 of the first slider 3 is positioned in the mounting hole 23 of the cutter member 2, and the cutter member 2 is swingably supported with respect to the first slider 3. Further, the elastic locking piece 27 is attached to the first slider 3.

  And the 1st slider 3 and the cutter member 2 are inserted in the 2nd guide groove 16 of the 2nd main body 8, and the 1st operation part 26 of the 1st slider 3 is operated, and it moves to the front-end | tip part of the cutter main body 1. . At this time, the protrusion 27a of the elastic locking piece 27 is locked to the locking recess 17 on one end side, and the cutter member 2 is positioned.

  Subsequently, the leaf spring 4 is inserted through the opening 15 of the first main body 7 and the locking portion 29 is positioned, so that the edge of the cutter member 2 can be pressed by the pressing portion 30 of the leaf spring 4. The leaf spring 4 is arranged as described above. Further, by attaching the second slider 5 to the opening 15, the contact portion 32 is brought into contact with the inserted leaf spring 4.

  Finally, the stopper member 6 is attached to one end of the cutter body 1. As a result, the first slider 3 is in a slidable state only within a range in which the cutter member 2 can be positioned at the retracted position and the protruding position. Since the stopper member 6 can be removed, when the cutting edge 22 of the cutter member 2 is sharp, the stopper member 6 is removed, and the first slider 3 and the cutter member 2 are slid toward the rear end side of the cutter body 11. The cutter member 2 can be exchanged by moving.

  Next, the operation of the cutter knife having the above configuration will be described. The cutter knife is mainly used for cutting only one sheet located at the uppermost position in a state where a plurality of sheets that are objects to be cut are stacked.

  In the state before cutting the paper, as shown in FIG. 5A, the first slider 3 is located at the retracted position, and the cutter member 2 is located at the standby position. The leaf spring 4 is in contact with the upper surface of the second main body 8, and the pressing portion 30 is located in the notch 21 of the second main body 8. However, since the cutter member 2 is located at the standby position, the side edge of the cutter member 2 is not located at the notch 21. For this reason, the tip cutting edge 22 of the cutter member 2 does not protrude from the sliding contact portion 20 of the cutter body 1.

  When cutting the paper, the first slider 3 is moved in the direction of arrow a from the state shown in FIG. 5A and moved to the forward position shown in FIG. Thereby, the cutter member 2 is located in a protrusion position. The cutter member 2 has its side edge positioned at the notch 21 of the second main body 8, and the side edge is pressed by the pressing portion 30 of the leaf spring 4. Thereby, the tip cutting edge 22 of the cutter member 2 protrudes from the sliding contact portion 20 of the cutter body 1.

  Therefore, the second slider 5 is slid to displace the position of the contact portion 32, and as described above, the urging force by the leaf spring 4 is adjusted according to the hook law, and the pressing force by the cutting blade 22 of the cutter member 2 is adjusted. Set to a predetermined value. As shown in FIG. 4A, when the distance from the abutting portion 32 to the pressing portion 30 is far and the elastically deformable dimension of the leaf spring 4 is long, the force for pressing the cutter member 2 becomes weak. Therefore, the pressing force with respect to the cutting object by the cutting blade 22 becomes small. On the other hand, as shown in FIG. 4B, when the distance from the contact portion 32 to the pressing portion 30 is short and the elastically deformable dimension of the leaf spring 4 is short, the force for pressing the cutter member 2 becomes strong. Accordingly, the pressing force of the cutting blade 22 against the object to be cut increases. This pressing force may be set to a value that allows the cutter member 2 to cut exactly one sheet. In the initial state, it is considered that the sharpness of the cutter member 2 by the cutting blade 22 is constant, and the position of the abutting portion 32 from which an appropriate pressing force can be obtained according to the type of copy object (copy paper, newspaper, magazine, etc.) Is displayed as a scale on the side edge of the opening 15 for alignment of the second slider 5. Thereby, the user can make a state in which only one sheet located at the uppermost part can be cut only by sliding the second slider 5 according to the scale according to the type of the cutting object. That is, trial cutting is not necessary. In addition, when the cutting edge 22 is not sharp, or when it is difficult to cut an object to be cut, the second slider 5 is moved to an appropriate position on the tip side to cut the cutting edge of the cutter member 2. What is necessary is just to enlarge the pressing force by 22.

  When the adjustment of the pressing force by the cutting blade 22 of the cutter member 2 is completed, as shown in FIG. 3, the sliding contact portion 20 of the cutter body 1 is brought into sliding contact with the paper located at the top of the stacked paper. The cutter member 2 is rotatably supported by the protrusion 28 of the first slider 3, and the cutting blade 22 is pressed with a constant pressing force by the leaf spring 4 whose urging force is adjusted by the contact portion 32 of the second slider 5. Can be pressed against the top sheet. This pressing force is a value that can cut only the uppermost sheet with the cutting blade 22. Therefore, the cutting of the sheet by the cutting blade 22 of the cutter member 2 is always performed with a constant pressing force, no matter how the sliding contact portion 20 of the cutter body 1 is pressed. For this reason, it is possible to reliably cut only one sheet located at the top.

  Thus, according to the cutter knife which concerns on the said embodiment, the pressing force with respect to the cutting object by the cutting blade 22 of the cutter member 2 on the basis of the slidable contact part 20 slidably contacting the cutting object is a constant value. can do. Therefore, regardless of the operability of the cutter knife, it is possible to reliably cut only one sheet positioned at the top. Even if an unreasonable load is applied to the blade 22, the leaf spring 4 is elastically deformed and retracts, so that no damage is caused.

  In addition, this invention is not limited to the structure described in the said embodiment, A various change is possible.

  For example, in the said embodiment, although the pressing force by the cutting blade 22 of the cutter member 2 was obtained with the leaf | plate spring 4 arrange | positioned along the cutter member 2, it is also possible to comprise as follows.

  That is, in FIG. 6, the cutter member 2 is provided so as to be movable in the longitudinal direction with respect to the cutter body 1. One end of a spring 35 is connected to the rear end side of the cutter member 2. A screw member 36 that is a moving member is connected to the other end of the spring 35. The screw member 36 is screwed into a female screw portion 37 provided in the cutter body 1. The screw member 36 moves in the longitudinal direction with respect to the cutter body 1 by changing the screwing position with respect to the female screw portion 37, and adjusts the urging force of the spring 35 that acts on the cutter member 2. Various springs such as a coil spring and urethane can be used as long as the spring 35 can apply a biasing force to the cutter member 2 in the protruding direction.

  In the cutter knife shown in FIG. 6, it cut | disconnects by making the circular arc surface (part in which the cutting blade protrudes) of the front-end | tip of the cutter main body 1 slide-contact with a cutting target. In the cutter member 2, the pressing force of the cutting blade 22 against the object to be cut is determined according to the urging force of the spring 35. Therefore, the cutting object can be cut with a constant pressing force as in the above embodiment. When the cutter knife is not used, a portion where the cutting blade 22 protrudes is covered with a cap or the like, or the screw member 36 is rotated so that the cutting blade 22 is immersed in the cutter body 1.

  As the moving member, a stopper member 38 shown in FIG. 7 can be adopted in addition to a screw member. That is, the protrusion 39 is formed on the outer peripheral surface of the cutter body 1. The stopper member 38 is formed in a bottomed cylindrical shape that is slidably attached to one end of the cutter body 1. The stopper member 38 has a coil spring 40 held by a shaft portion 38a provided on the inner side, and the coil spring 40 can urge the cutter member 2 in the protruding direction. The stopper member 38 is formed with a guide groove 41 in which the protrusion of the cutter body 1 can move along the longitudinal direction. The guide groove 41 is continuously provided with a plurality of locking grooves 42 at which the protrusions 39 are engaged and disengaged by rotating the stopper member 38 with respect to the cutter body 1. By changing the locking groove 42 for locking the protrusion 39, the urging force applied to the cutter member 2 by the coil spring 40 is adjusted.

  In the cutter knife shown in FIG. 7, the position of the locking groove 42 for locking the protrusion 39 may be changed by pushing and rotating the stopper member 38 according to the type of the object to be cut.

  In FIG. 8, an arm portion 43 is formed at a predetermined interval on the distal end side of the cutter body 1, and the cutter member 2 is attached to the arm portion 43 so as to be rotatable about a support shaft 44. One end of a coil spring 45 is connected to the cutter member 2 in the vicinity of the support shaft 44. The other end of the coil spring 45 is connected to a moving member 46 provided in the cutter body 1 so as to be slidable along the longitudinal direction thereof. When the position of the moving member 46 is displaced by rotating the screw member 47, the pulling force of the coil spring 45 that acts on the cutter member 2 can be adjusted.

  In the cutter knife shown in FIG. 8, the arc surface at the tip corner of the arm portion 43 is brought into sliding contact with the object to be cut in an inclined state. Thereby, the front-end cutting edge 22 of the cutter member 2 is pressed against the cutting object. This pressing force is determined by the pulling force applied to the cutter member 2 by the coil spring 45. Therefore, it is possible to cut only one sheet by adjusting the screw member 47 so that a desired pressing force is obtained by rotating the screw member 47.

  In FIG. 9, a circular arc surface is formed at the tip of the cutter body 1, and a cutter holding portion 49 that holds the cutter member 2 around the support shaft 48 is rotatably attached to the vicinity thereof. A winding portion of a spring 50 is attached to the support shaft 48. One end extending from the winding portion of the spring 50 is in pressure contact with the protrusion 51 provided on the cutter holding portion 49, and the other end is in pressure contact with the protrusion 52 provided on the cutter body 1. Thereby, the cutter member 2 can press the front-end cutting edge 22 against the object to be cut.

  In the cutter knife shown in FIG. 9, the tip end cutting edge 22 of the cutter member 2 is pressed against the cutting target object by the urging force of the spring 50 by sliding the tip arc surface of the cutter body 1 against the cutting target object. be able to. In this case, the biasing force of the spring 50 can be adjusted by adjusting the inclination angle of the cutter body 1 with respect to the cutting object. That is, when the pressing force by the cutting blade 22 is desired to be increased, the inclination angle with respect to the cutting object may be adjusted to be increased.

  Moreover, in the said embodiment, although one cutter member 2 was used, it is good also as a structure which can be isolate | separated at predetermined intervals like a normal cutter knife. In this case, it is necessary to enable positioning by the first slider 3 not only at the two positions of the protruding position and the retracted position but also at a plurality of positions that are sequentially advanced according to the separation state of the cutter member 2.

  In the above-described embodiment, the case of cutting only one sheet, which is a cutting object, has been described. However, when cutting a certain depth into the cutting object, or cutting a plurality of sheets at the same time instead of a single sheet. Even in such a case, the pressing force of the cutting blade 22 of the cutter member 2 can be set by adjusting the biasing force.

  In the embodiment, the urging force applied to the cutter member 2 is adjusted by moving the second slider 5 and changing the position where the leaf spring 4 is pressed. The leaf spring 4 itself may be slid and moved. Specifically, the leaf spring 4 is slid to move the contact position with the cutter body 1. Thereby, when the cutting object 22 is cut by the cutting blade 22 of the cutter member 2, the dimension that the leaf spring 4 is elastically deformed, that is, the biasing force that acts on the cutter member 2 is adjusted.

  Moreover, in the said embodiment, although the 1st main body 7 and the 2nd main body 8 were comprised by the separate member, it is also possible to form integrally, for example by shape | molding a synthetic resin.

  In the above embodiment, the cutter member 2 is configured to rotate or reciprocate in the longitudinal direction. However, the cutter member 2 may be configured to translate in a direction intersecting the longitudinal direction. In short, any configuration that can move the cutter member 2 relative to the cutter body 1 may be used.

DESCRIPTION OF SYMBOLS 1 ... Cutter body 2 ... Cutter member 3 ... 1st slider (an example of a holding member)
4 ... leaf spring (an example of a biasing member)
DESCRIPTION OF SYMBOLS 5 ... 2nd slider 6 ... Stopper member 7 ... 1st main body 8 ... 2nd main body 9 ... 1st inclined surface 10 ... 2nd inclined surface 11 ... Arc surface 12 ... 1st guide groove 12a ... Wide part 12b ... Narrow part DESCRIPTION OF SYMBOLS 13 ... Connection part 14 ... Escape recessed part 15 ... Opening part 16 ... 2nd guide groove 16a ... Wide part 16b ... Narrow part 17 ... Locking recessed part 18 ... Guide part 19 ... Slit 20 ... Sliding contact part 21 ... Notch part 22 ... Cutting blade 23 ... Mounting hole 24 ... Slider body 24a ... Inclined surface 25 ... Projection part 26 ... First operation part 27 ... Elastic locking piece 27a ... Projection part 28 ... Projection 29 ... Locking part 30 ... Pressing part 31 ... First 2 Operation part 32 ... Contact part 33 ... Stopper main body 34 ... Insertion part 35 ... Spring 36 ... Screw member 37 ... Female screw part 38 ... Stopper member 38a ... Shaft part 39 ... Projection 40 ... Coil spring 41 ... Guide groove 42 ... Engagement Stop groove 4 ... arm portion 44 ... support shaft 45 ... coil spring 46 ... movable member 47 ... the screw member 48 ... shaft 49 ... cutter holder 50 ... spring 51 ... projections 52 ... projection

Claims (6)

A cutter body provided with a sliding contact portion that is in sliding contact with the object to be cut;
A cutter member having a cutting blade for cutting the cutting object;
When the sliding contact portion of the cutter body is brought into sliding contact with the object to be cut, the biasing member is pressed to press the cutting blade against the cutting object with a constant pressure.
A cutter knife characterized by comprising:   The cutter knife according to claim 1, further comprising a pressing force adjusting member that adjusts a force of pressing the cutting blade against the object to be cut by the biasing member. The cutter member extends from one end toward the other end, and a cutting edge is formed on one side edge,
3. The cutter knife according to claim 1, wherein the urging member includes a leaf spring disposed along a side edge portion opposite to the cutting edge of the cutter member. The leaf spring includes a pressing portion that presses a side edge of the cutter member,
The pressing force adjusting member is provided so as to be slidable along a leaf spring attached to the cutter body, and includes a contact portion that comes into contact with the leaf spring. The cutter knife according to claim 3, wherein a dimension between a contact position with the leaf spring and the pressing portion is adjustable.   The cutter knife according to any one of claims 1 to 4, further comprising a holding member that rotatably supports the cutter member with a cutting blade protruding from the cutter body.   The cutter knife according to any one of claims 1 to 5, wherein the holding member is capable of positioning a cutting blade of the cutter member at least in either a protruding position or a retracted position.

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