JP7029048B2 - Cutting machine - Google Patents

Description

The present invention relates to a cutting machine for cutting paper.

Conventionally, a so-called rotary cutting machine that can cut the paper arranged on the base by the cooperation between the rotary blade and the base by moving the slider holding the rotary blade with respect to the base has been known. (See, for example, Patent Document 1). The slider holding the rotary blade is slidably supported with respect to the rail arranged on the base.

Generally, the rotary blade of the slider is not arranged at a position corresponding to the center in the width direction on the rail. In other words, the rotary blade of the slider is arranged outside the outer edge of the rail.

When cutting the paper, the rotary blade arranged on the slider presses the paper from above by the operation of the user. On the other hand, the slider receives a reaction force from the paper, and the reaction force acts on the rail supporting the slider, which may cause a certain twist. If a certain amount of twist occurs in the rail, there may be a problem that the paper cannot be cut linearly.

In the conventional cutting machine, the reaction force received by the slider from the paper to be cut is absorbed by the rigidity of the rail supporting the slider. That is, the conventional cutting machine needs to impart rigidity to the rail so as to be able to overcome the torsional stress. In other words, conventional cutting machines have severely limited design freedom for constructing rails that support sliders.

Japanese Unexamined Patent Publication No. 2000-176881

The present invention has been made by paying attention to the above circumstances, and an object of the present invention is to provide a cutting machine having an excellent degree of freedom in design for constructing a rail that supports a slider.

That is, the present invention has the following configuration.

The invention according to claim 1 is movable between a base having an upward surface on which paper is arranged, a lower position close to the base, and an upper position farther from the lower position. A supported rail, a paper retainer that is supported by the rail and can hold the paper to be cut at least in the lower position, and a rotary blade that can cut the paper are held at a position outside one side edge of the rail. It is a cutting machine provided with a slider supported so as to be slidable with respect to the rail, and the rotary blade receives from the paper at the time of cutting operation on the opposite side of the rotary blade across the rail. A reaction force canceling means capable of canceling the reaction force in the upward direction is provided , and the rail body extending linearly in the front-rear direction and a front rail receiving member attached to the front end portion of the rail body. And a rear rail receiving member attached to the rear end of the rail body, and the reaction force canceling means is integrally provided on the front rail receiving member and the rear rail receiving member, respectively. It is a cutting machine provided with a portion and a contact portion provided on the base to which the protruding portion can directly contact at the lower position .

According to the second aspect of the present invention, the rail is urged in the direction of the upper position by the urging member arranged between the front rail receiving member and the base, and the rear rail receiving member and the rear rail receiving member. The cutting machine according to claim 1 , wherein the rail is urged in the direction of the upper position by an urging member arranged between the base and the base.

The invention according to claim 3 is the cutting machine according to claim 1 or 2 , wherein the protruding portion may come into contact with a portion other than the paper arrangement range in the base.

According to the fourth aspect of the present invention, the paper retainer is supported so as to be relatively movable in the vertical direction with respect to the rail, and is supported by an urging member for the paper retainer interposed between the paper retainer and the rail. The cutting machine according to claim 1, 2 or 3, which is urged in the upward direction.

The invention according to claim 5 is movable between a base having an upward surface on which paper is arranged, a lower position close to the base, and an upper position farther from the lower position. A supported rail, a paper retainer that is supported by the rail and can hold the paper to be cut at least in the lower position, and a rotary blade that can cut the paper are held at a position outside one side edge of the rail. It is a cutting machine provided with a slider supported so as to be slidable with respect to the rail, and the rotary blade receives from the paper at the time of cutting operation on the opposite side of the rotary blade across the rail. The reaction force canceling means capable of canceling the reaction force in the upward direction is provided, and the slider supports the rotary blade so as to be relatively movable in the vertical direction with respect to the slider main body, and the rotation thereof. The cutting machine is a cutting machine in which the blade is urged in the upward direction by the urging member for the rotary blade.

As described above, according to the present invention, it is possible to provide a cutting machine having an excellent degree of freedom in design for forming a rail that supports a slider.

The perspective view which shows one Embodiment of this invention. Front view in the same embodiment. The rear view in the same embodiment. The plan view in the same embodiment. Right side view in the same embodiment. Left side view in the same embodiment. The perspective view in the same embodiment. An exploded perspective view of the same embodiment. An exploded perspective view of the same embodiment. FIG. 4 is a sectional view taken along line XX in FIG. The operation explanatory drawing corresponding to FIG. 10 in the same embodiment. FIG. 4 is a sectional view taken along line YY in FIG. The operation explanatory drawing corresponding to FIG. 12 in the same embodiment. A partially enlarged view of the front part in FIG. The operation explanatory drawing corresponding to FIG. 14 in the same embodiment. A partially enlarged view of the rear part in FIG. The operation explanatory drawing corresponding to FIG. 16 in the same embodiment. The operation explanatory drawing corresponding to FIG. 14 in the same embodiment. The operation explanatory drawing corresponding to FIG. 16 in the same embodiment. The perspective view of the slider in the same embodiment. An exploded perspective view of the slider in the same embodiment. An exploded perspective view of the slider in the same embodiment. An exploded perspective view of the slider in the same embodiment. Right side view showing front and rear rail support members according to another embodiment. The perspective view which shows the front and rear rail support member which is another embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 23.

The cutting machine A is separated from the base B having the upward surface k1 on which the paper P is arranged, the lower position (a) closer to the base B, and the base B than the lower position (a). A rail C that is movably supported between the upper position (b) and a paper retainer F that is supported by the rail C and can hold the paper P to be cut at least in the lower position (a) from above, and the paper P. It is provided with a slider J that holds the rotary blade z1 that can be cut and is supported so as to be slidable with respect to the rail C. The cutting machine A can cut the paper P arranged on the base B by the cooperation between the rotary blade z1 and the base B by moving the slider J holding the rotary blade z1 forward and backward with respect to the base B. It is a so-called rotary type.

The cutting machine A in this embodiment has a front rail lock mechanism H, which is provided at the front end portion of the rail C and is on the one end side capable of locking the rail C at the lower position (a), and the other end of the rail C. It is provided at the rear end portion of the portion and includes a rear rail lock mechanism I which is the other end side capable of locking the rail C at the lower position (a). The front and rear rail lock mechanisms H and I can operate independently and independently.

Hereinafter, the cutting machine A will be described in detail.

<< Base B >>
The base B is provided at the base main body K having an upward surface k1 on which the paper P is arranged, the front base portion L provided at the front end portion of the base main body K, and the rear end portion of the base main body K. It is provided with a rear base portion M. The base B is placed on a mounting surface such as a top plate (not shown) at the time of use. The base B can cut the paper P in cooperation with the rotary blade z1. The upward surface k1 of the base main body K is set as a paper arrangement range in which the paper P can be arranged.

The base B has a blade receiver b1 arranged at a position where the blade edge z12, which is the tip of the rotary blade z1, can come into contact with the base B. The blade receiver b1 is replaceable, for example, when deterioration occurs due to repeated use. The blade holder b1 is arranged in a recess b2 for arranging the blade holder formed on the upper surface side of the right side edge portion which is one side edge portion of the base B. With the rear end portion positioned at the rear base portion M, the blade receiver b1 is prevented from being separated from the recess b2 for arranging the blade receiver by the blade receiver holding member 19 rotatably provided on the front base portion L. It is held in.

<Base body K>
The base body K is located in the middle portion in the front-rear direction of the base B. The upward surface k1 of the base body K is formed in a substantially planar shape so that the paper P can be placed on it. Below the recess b2 for disposing of the blade holder in the base main body K, a reinforcing material (not shown) is provided along the recess b2 for disposing the blade receiver.

<Front base part L>
The front base portion L includes a front base portion main body 1 having an upper surface set at a position higher than the base main body K, and a front back plate member 2 arranged under the front base portion main body 1.

The front base portion main body 1 is a first recessed portion provided at the front end portion and capable of disposing the front rail lock mechanism H and forming an operation space for performing an operation related to the front rail lock mechanism H. 11 and a second recessed portion 12 provided behind the first recessed portion 11 and capable of disposing a lower portion of a front rail receiving member Q constituting the rail C.

The front base portion main body 1 has a boss 13 that is erected in the second recessed portion 12 and can hold the front spring D that is an urging member, and a front rail receiving member Q that is erected in the second recessed portion 12. A guide rail 14 that can guide the rail C in the vertical direction, a receiving recess 15 that is a contact portion formed at a position close to the left edge of the rail C and a protrusion 53 provided on the front rail receiving member Q, and a receiving recess 15 in front of the rail C. An insertion hole for inserting the base portion s1 which is the lower end of the rail support member S before forming the rail lock mechanism H so that the front rail support member S can be slidably supported on the front back plate member 2. It is equipped with 16. The receiving recess 15 engages with the protruding portion 53 of the front rail receiving member Q when the rail C is in the lower position (a), and constitutes the reaction force canceling means 9.

On the bottom surface side of the front base portion main body 1, an upward engaging protrusion s11 provided on the front rail support member S is adjacent to a first recess 17 and a first recess 17 that can be engaged by elastic deformation. The upward engaging protrusion s11 provided on the front rail support member S is provided with a second recess 18 that can be engaged by elastic deformation.

The front back plate member 2 supports the front base portion main body 1. The front back plate member 2 includes an extending portion 21 extending to the base main body K side so that the front portion of the base main body K can be supported from the lower side.

<Rear base part M>
The rear base portion M includes a rear base portion main body 3 whose upper surface is set at a position higher than that of the base main body K, and a rear back plate member 4 arranged under the rear base portion main body 3.

The rear base portion main body 3 is provided at the rear end portion and may be provided with the rear rail lock mechanism I, and may form an operation space for performing operations related to the rear rail lock mechanism I. A portion 31 and a second recessed portion 32 provided on the front side of the first recessed portion 31 and capable of disposing the lower portion of the rear rail receiving member R constituting the rail C are provided.

The rear base portion main body 3 has a boss 33 that is erected in the second recess 32 and can hold the rear spring E that is an urging member, and a rear rail receiving member R that is erected in the second recess 32. A guide rail 34 that can guide the rail C in the vertical direction, a receiving recess 35 that is a contact portion that is formed at a position close to the left edge of the rail C and can be contacted by a protrusion 73 provided on the rear rail receiving member R, and a rear Insertion for inserting the base portion t1 which is the lower end portion of the rail support member T after forming the rail lock mechanism I so that the rail support member T after that can be slidably supported on the rear back plate member 4. It is provided with a hole 36. The receiving recess 35 engages with the protruding portion 73 of the rear rail receiving member R when the rail C is in the lower position (a), and constitutes the reaction force canceling means 9.

The rear base portion main body 3 is adjacent to a first recess 37 formed on the bottom surface side and to which an upward engaging projection t11 provided on the rear rail support member T can be engaged by elastic deformation, and a first recess 37. The upward engaging protrusion t11 provided on the rail support member T after being provided is provided with a second recess 38 that can be engaged by elastic deformation. The rear base portion main body 3 is provided with a blade unit storage lid 39 that can operably close the storage chamber that can accommodate the replacement blade unit Z.

The rear back plate member 4 supports the rear base portion main body 3. The rear back plate member 4 includes an extending portion 41 extending to the base main body K side so that the rear portion of the base main body K can be supported from the lower side.

<< Rail C >>
The rail C can support the slider J so as to be slidable in the front-rear direction. The rail C includes a rail body N extending linearly in the front-rear direction, a front rail receiving member Q attached to the front end of the rail body N, and a rear rail receiving member R attached to the rear end of the rail body N. And be prepared. The rail body N, the front rail receiving member Q, and the rear rail receiving member R can operate integrally.

The rail C has a lower position (a) where the paper P can be held by the paper holder F which is close to the base B and supported by the rail C, and an upper position (b) which is located above the lower position (a). It is arranged on the base B so that it can move up and down between and. When the rail C is in the upper position (b), a gap sk for inserting paper into which the paper P to be cut can be inserted between the lower surface of the paper holding surface of the paper holding F and the upward surface k1 of the base B. Can be formed.

The rail C is always urged in the upward position (b) by the front spring D and the rear spring E, which are urging members arranged between the rail C and the base B. More specifically, the rail C is urged in the direction of the upper position (b) by the front spring D interposed between the front rail receiving member Q and the front base portion L, and the rear rail receiving member. It is urged in the direction of the upper position (b) by the rear spring E interposed between the R and the rear base portion M.

<Rail body N>
The rail body N includes a channel-shaped outer rail member n1 integrally having side walls n13 erected from both side edge edges of the bottom wall n11 and the bottom wall n11, and an inner rail mounted on the outer rail member n1. It includes a member n2. The outer rail member n1 and the inner rail member n2 are connected by screws v2 at a plurality of points.

The bottom wall n11 of the outer rail member n1 is formed with an insertion hole n12 through which the boss portion f1 erected on the paper retainer F can be vertically moved.

The inner rail member n2 includes a top wall n21 arranged at a position connecting the upper ends of the side wall n13 of the outer rail member n1. A guide groove n22 for positioning the slider J is provided on the upper surface of the top wall n21 of the inner rail member n2. A positioning protrusion u12 projecting from the engaging recess u11 of the slider base U can be engaged with the guide groove n22.

On the lower surface side of the top wall n21 of the inner rail member n2, a downward boss portion n23 having a lower end portion positioned in the insertion hole n12 of the outer rail member n1 is formed. The downward boss portion n23 is inserted into the through hole f3 of the upward boss portion f1 projecting from the paper retainer F. A washer wa, which is a retaining member, is attached to the tip of the downward boss portion n23 by a screw v1.

The washer wa, which is a retaining member, is in contact with the lower surface of the flange portion f2 formed on the inner surface side of the boss portion f1 in the paper retainer F so that the paper retainer F does not come out downward from the rail C. For paper holding between the rail C and the paper holding F, that is, between the inner surface of the top wall n21 in the inner rail member n2 and the upper surface of the flange portion f2 formed on the outer surface side of the boss portion f1 in the paper holding F. A paper holding spring G, which is an urging member of the above, is arranged.

<Front rail receiving member Q>
The front rail receiving member Q is attached to the rail body N by a screw v3. The front rail receiving member Q is made of synthetic resin. The front rail receiving member Q has a box shape that opens downward, and is provided on the front rail receiving member main body 5 that supports the front end portion of the rail main body N on the upper surface side and the front portion of the front rail receiving member main body 5. It is provided with a rail lock mechanism engaging portion 6 that can be engaged with the rail lock mechanism H.

The front rail receiving member main body 5 is inserted with a guide rail engaging portion 51 that extends in the vertical direction and can be externally fitted to the guide rail 14 of the front base portion L, and a screw v3 for connecting to the front end portion of the rail main body N. A rectangular piece-shaped protrusion that can directly contact the screw insertion hole 52 to be formed and the receiving recess 15 that is a contact portion formed in the front base portion L at the lower position (a) so as to project from the left side portion. It is provided with a unit 53. The protrusion 53 is directly related to the receiving recess 15 of the base B and constitutes the reaction force canceling means 9.

The rail lock mechanism engaging portion 6 includes an upright wall 61 erected from the front end edge of the front rail receiving member main body 5 and left and right side walls 65 extending forward from the left and right side edges of the upright wall 61. And an erection portion 66 connecting the lower portions of the front edge portions on the left and right side walls 65.

The upper end of the upright wall 61 constituting the rail lock mechanism engaging portion 6 has a pressing inclined surface 63 that is projected forward and faces diagonally downward, and is located above the pressing inclined surface 63. An engaging protrusion 62 having a flat engaging portion 64 facing upward is provided. The engaging protrusion 62 is a portion that can be directly engaged with the previous rail support member S constituting the previous rail lock mechanism H.

<Rear rail receiving member R>
The rear rail receiving member R is attached to the rail body N by a screw v3. The rear rail receiving member R is made of synthetic resin. The rear rail receiving member R has a box shape that opens downward, and is provided at the rear of the rear rail receiving member main body 7 that supports the rear end portion of the rail main body N on the upper surface side and the rear portion of the rear rail receiving member main body 7. It includes a rail lock mechanism engaging portion 8 that can engage with the rail lock mechanism I.

The rear rail receiving member main body 7 has a guide rail engaging portion 71 that extends in the vertical direction and can be externally fitted to the guide rail 34 of the rear base portion M, and a screw v3 for connecting to the rear end portion of the rail main body N. It has a rectangular piece shape that can directly contact the screw insertion hole 72 to be inserted and the receiving recess 35 that is a contact portion formed in the rear base portion M at the lower position (a) so as to project from the left side portion. It is provided with a protrusion 73. The protrusion 73 is directly related to the receiving recess 35 of the base B and constitutes the reaction force canceling means 9.

The rail lock mechanism engaging portion 8 includes an upright wall 81 erected from the rear end edge of the rear rail receiving member main body 7 and left and right side walls extending rearward from the left and right side edges of the upright wall 81. It includes an 85 and an erection portion 86 that connects the lower portions of the trailing edges of the left and right side walls 85.

The upper end of the upright wall 81 constituting the rail lock mechanism engaging portion 8 has a pressing inclined surface 83 projecting rearward and facing diagonally downward, and is located above the pressing inclined surface 83. An engaging protrusion 82 having a flat engaging portion 84 facing upward is provided. The engaging protrusion 82 is a portion that can be directly engaged with the rear rail support member T that constitutes the later rail lock mechanism I.

The cutting machine A in this embodiment receives a reaction force received from the paper P during a cutting operation by the rotary blade z1 arranged on the left side edge side of the rail C on the left side edge side, which is the other side edge side of the rail C. A reaction force canceling means 9 that can be canceled is provided.

That is, in the reaction force canceling means 9, the protrusions 53 and 73 integrally provided on the front rail receiving member Q and the rear rail receiving member R, respectively, and the protrusions 53 and 73 at the lower position (a) are directly provided. It is mainly composed of receiving recesses 15 and 35, which are contact portions provided on the base B so as to be in contact with each other. The reaction force canceling means 9 is provided on the opposite side of the rotary blade z1 with the rail C interposed therebetween.

The reaction force canceling means 9 receives the reaction force that the slider J receives from the paper P due to the operation of the slider J by the user (that is, the operation of trying to cut the paper P) on the side where the rotary blade z1 is located via the rail C. By transmitting to the base B on the opposite side of the rail C, the overall twist of the rail C in the lower position (a), more specifically, the rail C trying to rotate in the opposite direction of the clock in front view. It is capable of exerting a so-called stabilizer function that can suppress twisting.

That is, in order to cut the paper P, the user grips the slider J, pushes the slider J down in the upward surface k1 direction of the base B, and then pushes the slider J in the front-rear direction along the rail C. The slide will be moved. At this time, the user pushes down the slider J supported by the rail C substantially vertically downward, while the rotary blade z1 provided on the slider J is located at a position deviated from the center in the width direction of the rail C, so that the rotary blade z1 The reaction force received from the paper P acts in the direction of twisting the rail C. In particular, since the blade unit Z having the rotary blade z1 is supported by the blade holder w3 urged downward by the blade holder spring w4, the slider J receives a constant reaction force from the paper P. ..

Due to the action of the reaction force canceling means 9, even when the user operates the slider J and receives the reaction force from the paper P, the twist of the rail C is suppressed, and the slider J is the paper. It is possible to cut P straight.

<Paper holder F>
The paper retainer F is supported so as to be relatively movable in the vertical direction with respect to the rail C, and is always supported by the paper retainer spring G which is an urging member for the paper retainer interposed between the paper retainer F and the base B. Being urged in the direction. The paper retainer F can exert a function of pressing the paper P to be cut from above when the rail C is in the lower position (a). When pressing the paper P, the paper pressing spring G receives the reaction force on the base B side and is compressed. Then, the paper retainer F at this time is pressed by the paper P arranged on the base B and moves in a direction approaching the rail C.

The paper presser F has a paper presser body f4 having a flat plate-like portion extending in the front-rear direction and having a lower surface that can be attached to the upper surface of the paper P, and a boss portion f1 projecting upward from the paper presser body f4. It is equipped with. The boss portion f1 has a stepped tubular shape forming a through hole f3, and has a flange portion f2 for forming a stepped portion on the outer surface side and the inner surface side in the vertical intermediate portion.

In this embodiment, the front rail lock mechanism H and the rear rail lock mechanism I can operate independently of each other, so that the rail C is substantially parallel to the upward surface k1 of the base B. It may not take a good posture. However, the paper retainer F of the present embodiment differs in the degree of expansion and contraction of the plurality of paper retainer springs G arranged in the longitudinal direction of the paper retainer main body f4 even when the paper retainer F is tilted with respect to the rail C. It is something that can hold down a part.

<Front / rear rail lock mechanism H, I>
The front rail lock mechanism H is provided at the front end of the rail C, that is, outside the front rail receiving member Q. The front rail lock mechanism H directly engages with the front rail receiving member Q and can lock the rail C at the lower position (a).

The rear rail lock mechanism I is provided at the rear end of the rail C, that is, outside the rear rail receiving member R. The rear rail lock mechanism I directly engages with the rear rail receiving member R and can lock the rail C at the lower position (a).

The front and rear rail lock mechanisms H and I can operate independently and independently. That is, the cutting machine A of the present embodiment can also lock only one of the front rail lock mechanism H and the rear rail lock mechanism I to the lower position (a). In other words, the user can operate only one of the front rail lock mechanism H and the rear rail lock mechanism I.

The front and rear rail lock mechanisms H and I are moved from the upper position (b) to the lower position (a) without directly touching the rail C as the user presses the slider J downward. The rail C can be automatically locked separately and independently at the lower position (a). For example, the user grips the slider J located on the front side (front side) of the rail C, and applies a downward load to the rail C at the upper position (b) via the slider J while loading the paper P. When the operation to be cut (that is, the operation of sliding the slider J to the rear side) is performed, the operation of locking the rail C to the lower position (a) in the order of the front rail lock mechanism H and the rear rail lock mechanism I is performed. It can be executed automatically.

The front rail lock mechanism H is provided with a locking portion s21 that is attached to the base B and can engage with the engaging portion 64 of the front rail receiving member Q to hold the rail C in the lower position (a), that is, the front. The rail support member S is provided.

The rear rail lock mechanism I is attached to the base B and is provided with a locking portion t21 that can engage with the engaging portion 84 of the rear rail receiving member R to hold the rail C in the lower position (a), that is, the rear. The rail support member T is provided.

The front and rear rail support members S and T are made of synthetic resin having excellent elastic deformation. The front and rear rail support members S and T have a substantially horizontal posture and are erected from the base portions s1 and t1 supported on the base B and the outer edges of the base portions s1 and t1 in the front-rear direction due to elastic deformation of the members. It is provided with upright portions s2 and t2 that can operate in the same manner. The front and rear rail support members S and T have a substantially L-shaped shape in a side view due to the base portions s1 and t1 and the upright portions s2 and t2.

The front and rear rail support members S and T have a lockable position (sa) in which the rail C can be locked in the lower position (a), and a retracted position (sb) in which the rail C cannot be locked in the lower position (a). ), (Tb) is supported by the base B so that it can be taken. In other words, the front and rear rail lock mechanisms H and I have a lock enabled state in which the rail C can be locked in the lower position (a) and a lock disabled state in which the rail C cannot be locked in the lower position (a). It is configured to be selectable.

The front and rear rail support members S and T have lockable positions (sa) and (ta) in which the rail C can be locked in the lower position (a) and the rail C in the lower position (a). It is supported so that it can be slidably moved in the front-rear direction with respect to the base B between the retracted position (sb) and (tb) where the lock cannot be locked.

The base portions s1 and t1 of the front and rear rail support members S and T have engagement protrusions capable of selectively elastically engaging with the first and second recesses 11, 31, 12, and 32 provided in the base B. It has s11 and t11. When the front and rear rail support members S and T are in the lockable positions (sa) and (ta), the engaging protrusions s11 and t11 engage with the first recesses 11 and 31. When the front and rear rail support members S and T are in the retracted positions (sb) and (tb), the engaging protrusions s11 and t11 engage with the second recesses 12 and 32.

On the inner surface side of the upright portions s2 and t2 of the front and rear rail support members S and T, the front rail receiving member Q and the rear rail are in the process of moving the rail C from the upper position (b) to the lower position (a). The pressed inclined surfaces s22 and t22 pressed by the pressing inclined surfaces 63 and 83 provided on the outer surface side of the receiving member R are provided. The pressed inclined surfaces s22 and t22 provided on the front and rear rail support members S and T descend from the upper side to the lower side, and the pressed inclined surfaces 63 and 83 of the front rail receiving member Q and the rear rail receiving member R. When pressed against, the entire upright portions s2 and t2 of the front and rear rail support members S and T are temporarily retracted outward due to the elastic deformation of the members, and the rail C is moved to the lower position (a). Allow that.

Under the pressed inclined surfaces s22 and t22 in the upright portions s2 and t2, locking portions s21 and t21 that can engage with the engaging portions 64 and 84 of the front rail receiving member Q and the rear rail receiving member R are provided. There is. The locking portions s21 and t21 have flat portions facing downward. The locking portions s21 and t21 can engage with the engaging portions 64 and 84 having flat portions facing upward in the front rail receiving member Q and the rear rail receiving member R. When the locking portions s21, t21 and the engaging portions 64, 84 are engaged, the rail C is held in the lower position (a).

The upper ends of the upright portions s2 and t2 of the front and rear rail support members S and T are provided with release operation portions s23 and t23 that can release the locked state of the rail C locked at the lower position (a). There is. The release operation units s23 and t23 are portions where the user's finger can be locked. The release operation units s23 and t23 can temporarily elastically deform the upright portions s2 and t2 of the front and rear rail support members S and T outward by the operation of the user. When the release operation portions s23 and t23 are operated by the user, the locking portions s21 and t21 having downward surfaces in the front and rear rail support members S and T, the front rail receiving member Q and the rear rail receiving member R. In, the engaging portions 64 and 84 having the upward surface k1 are separated from each other, and as a result, the state in which the locking portions s21 and t21 and the engaging portions 64 and 84 can be engaged can be released. There is.

A slide operation that can selectively slide the lockable position (sa), (ta) and the retracted position (sb), (tb) on the upright portions s2 and t2 of the front and rear rail support members S and T. The parts s24 and t24 are provided. The slide operation portions s24 and t24 are provided below the standing portions s2 and t2. The slide operation units s24 and t24 have a substantially U-shape or a substantially C-shape forming a finger insertion space on which the user's finger can be hung in a side view. For example, the user can lock the front and rear rail support members S and T because the user can hang his finger on the slide operation portions s24 and t24 and pull the front and rear rail support members S and T outward. It is possible to easily operate from the position (sa) and (ta) to the retracted position (sb) and (tb).

The front and rear rail support members S and T having other forms as shown in FIGS. 24 and 25 may be applied.

That is, the front and rear rail support members S and T, which are other embodiments, raise the upright portions s2 and t2 substantially vertically from the tip portions of the base portions s1 and t1. Then, the lockable position (sa), (ta) and the retracted position (sb), (tb) can be selectively slid on the upright portions s2 and t2 of the front and rear rail support members S and T. The slide operation portions s24 and t24 are projected outward from the portions s25 and t25 that are erected substantially vertically. That is, the front and rear rail support members S and T, which are other embodiments, have the slide operation portions s24 and t24 in a substantially U-shape or abbreviated to form a finger insertion space on which the user's finger can be hung in a side view. It is not a C-shaped one, but is provided on the side surface of the outwardly protruding portions s26 and t26.

Since the front and rear rail support members S and T, which are the other embodiments, have such a configuration, they receive a strong force from the engaging portions 64 and 84 of the front rail receiving member Q and the rear rail receiving member R. Even in this case, the locking portions s21 and t21 are difficult to move in the direction of disengagement.

<< Slider J >>
The slider J supports the rotary blade z1 for cutting the paper P. The slider J holds the rotary blade z1 capable of cutting the paper P at a position outside the right side edge, which is one side edge of the rail C. The slider J is supported so as to be slidable with respect to the rail C.

The slider J includes a slider base U slidably mounted on the rail C, an operation handle V provided on the slider base U, and an opening / closing body W supported so as to be openable / closable with respect to the slider base U. It is provided with a blade unit Z supported by the opening / closing body W.

The slider J supports the blade unit Z, which holds the rotary blade z1 with respect to the slider main body, so as to be relatively movable in the vertical direction. The slider main body mainly includes a slider base U, an operation handle V, and an opening / closing body main body w1 constituting the opening / closing body W. The blade holder w3 capable of holding the blade unit Z is supported with respect to the slider body so as to be relatively movable in the vertical direction.

<Slider base U>
The slider base U includes a slider base main body u1 in which an engaging recess u11 engaged with the rail C is formed, and an opening / closing body support portion u2 provided on the right side edge portion of the outer edge portion of the slider base main body u1. .. A positioning convex portion u12 for positioning the slider J is projected downward in the left-right intermediate portion of the engaging recess u11.

The slider base main body u1 is provided with an interference avoidance recess u13 that can avoid interference of the blade unit Z supported by the opening / closing body W with the rotary blade z1 when the opening / closing body W is opened / closed. An operation handle V is attached to the upper edge of the slider base body u1 via a screw (not shown).

The opening / closing body support portion u2 includes front and rear extending walls u21 projecting from the slider base main body u1 and supporting shafts u22 projecting from the facing surfaces of the extending walls u21, respectively. The support shaft u22 is supported by a bearing hole w14 which is a shaft support portion provided in the opening / closing body W.

<Operation handle V>
The operation handle V is mounted on the slider base U by a screw (not shown). The upper surface side of the operation handle V is formed in a curved surface shape that is easy for the user to grasp. The operation handle V is provided with a notch v1 on the side portion on the opening / closing body W side for avoiding interference with the opening / closing body W. The protrusion w21 of the lock member w2 can be engaged with the edge of the notch v1.

<Opening and closing body W>
The opening / closing body W is rotatably supported with respect to the slider base U. That is, the opening / closing body W is supported so as to be openable / closable with respect to the slider base U. The opening / closing body W can form a space in which the blade unit Z having the rotary blade z1 can be exchanged in a state of being open with respect to the slider base U.

The opening / closing body W has an opening / closing body main body w1 rotatably supported by the slider base U and a protrusion w21 rotatably attached to the opening / closing body main body w1 and capable of engaging with the operation handle V. The lock member w2, the blade holder w3 that is vertically movable and can hold the blade unit Z with respect to the opening / closing body main body w1, and the blade holder w3 provided between the opening / closing body main body w1 and the blade holder w3 are used as a base. It is provided with a pair of blade holder springs w4 which are urging members for the blade holder urging in the B direction.

The opening / closing body w1 has a side wall w11 that rotatably supports the lock member w2, a front wall w12 projecting inward from the front edge of the side wall w11, and an inward direction from the trailing edge of the side wall w11. It is equipped with a rear wall w13 that is projected. The side wall w11, the front wall w12, and the rear wall w13 form a storage space capable of vertically moving the blade holder w3.

The lock member w2 is rotatably supported with respect to the opening / closing body body w1. The lock member w2 includes a protrusion w21 provided on the outer peripheral edge and capable of engaging with the edge of the notch v1 in the operation handle V, and an operation ridge w22 protruding from the outer surface side and pickable by the user. The lock member w2 can lock the opening / closing body body w1 to the closed position with the protrusion w21 engaged with the operation handle V.

The blade holder w3 is supported so as to be vertically movable with respect to the opening / closing body main body w1 and can hold the blade unit Z having the rotary blade z1. The blade holder w3 can open and close the slider base U together with the opening / closing body main body w1. The blade holder w3 is urged in the direction of the upward surface k1 of the blade receiver b1 by the blade holder spring w4 which is an urging member for the blade holder.

The blade holder w3 is a blade that is rotatably supported by a blade holder body w31 having a shape capable of holding the blade unit Z and a blade that can move up and down in conjunction with the blade holder body w31. The shaft pin w33, the holding bearing w34 that holds the base end of the blade shaft pin w33, and the blade holder body w31 attached to the blade holder body w31 can regulate the relative position of the blade holder body w31 with respect to the opening / closing body body w1 and the blade holder body w31. Is provided with a retaining pin w35 that prohibits the blade from coming out downward from the opening / closing body main body w1.

The blade holder main body w31 includes a recessed portion w36 in which a positioning protrusion z22 projecting from the blade holding member z2 of the blade unit Z is engaged. The blade holder main body w31 is supported so as to be vertically movable with respect to the opening / closing body main body w1.

The blade shaft pin w33 is fitted in the through hole z11 provided in the rotary blade z1 of the blade unit Z, and can rotate integrally with the rotary blade z1 when cutting the paper P.

The retaining pin w35 is attached to the blade holder main body w31 and protrudes toward the opening / closing body main body w1. The protruding portion of the retaining pin w35 is located in the elongated hole w15 formed in the opening / closing body body w1 in the vertical direction, and the vertical movement range of the blade holder body w31 in cooperation with the elongated hole w15. Can be regulated. Since the blade holder body w31 is urged downward by the blade holder spring w4, which is an urging member for the rotary blade z1, the retaining pin w35 abuts on the lower edge of the elongated hole w15 in a no-load state. The state of the blade will be maintained.

<Blade unit Z>
The blade unit Z is detachably attached to the blade holder w3 of the opening / closing body W. The blade unit Z includes a rotary blade z1 having an outer peripheral edge z12 and a blade holding member z2 for holding the rotary blade z1. The blade unit Z can be replaced with another blade unit Z, for example, when the blade edge z12 of the rotary blade z1 deteriorates due to use or the like.

The rotary blade z1 has a through hole z11 formed in the center thereof. The through hole z11 can be fitted to the blade shaft pin w33 provided in the blade holder w3 of the opening / closing body W.

The blade holding member z2 is made of synthetic resin and has a rectangular shape in which a portion other than the lower end portion of the rotary blade z1 is housed. The blade holding member z2 is provided with a communication hole z21 at a position corresponding to the through hole z11 of the rotary blade z1. Further, the blade holding member z2 is provided with a plurality of projecting portions z22 for positioning on the blade holder w3 so as to project outward.

Subsequently, the operation of the cutting machine A in this embodiment will be described.

First, the paper P to be cut is placed at a predetermined position on the upward surface k1 of the base body K. Generally, by bringing the front edge portion or the trailing edge portion of the paper P to be cut into contact with the trailing edge of the front base portion L or the front edge of the rear base portion M, the paper P is placed on the base body K. It will be positioned.

Next, the work for cutting the paper P by the rotary blade z1 supported by the slider J is performed. When the number of sheets of paper P to be cut is relatively large, it is usually necessary to reciprocate the slider J with respect to the rail C a plurality of times to cut the plurality of sheets P in order from the top. In this case, it is necessary to hold the paper P from above on the base body K so as not to shift and move before cutting. After placing the paper P on the base body K, the user presses the rail C downward to press the paper P from above, and presses the paper P from above on the paper retainer F supported by the rail C. Perform the operation to make it. The operation of lowering the rail C to the lower position (a) by the user is performed by pressing the rail C downward against the urging force of the front spring D and the rear spring E.

In the process of transitioning the rail C from the upper position (b) to the lower position (a), the pressing inclined surfaces 63 and 83 provided on the front rail receiving member Q and the rear rail receiving member R form the front rail supporting member S and the front rail supporting member S. The pressed inclined surfaces s22 and t22 provided on the rear rail support member T are pressed. Then, the front rail receiving member Q and the rear rail receiving member R temporarily elastically deform the upright portions s2 and t2, which are the upper portions of the front rail supporting member S and the rear rail supporting member T, outward. As a result, the front rail receiving member Q and the rear rail receiving member R integrally attached to the rail body N can move to the lower position (a). The engaging portions 64 and 84 of the front rail receiving member Q and the rear rail receiving member R that have moved to the lower position (a) are temporarily deformed outward and then returned to their original postures. And engages with the locking portions s21 and t21 provided on the later rail support member T. As a result, the rail C is prohibited from moving upward by the front rail support member S and the rear rail support member T, and is held at the lower position (a).

The paper retainer F is supported so as to be vertically movable with respect to the rail C. Then, when the rail C is in the lower position (a), the paper retainer F is pressed by the paper P arranged on the base B and is relative to the rail body N direction against the urging force of the paper retainer spring G. It is designed to move.

As a result of the rail C being held in the lower position (a), after the paper retainer F is in the state of pressing the paper P, the user reciprocates the slider J in the front-rear direction to move the plurality of sheets P up. It will be cut in order from. At this time, the torsional deformation acting on the rail C is suppressed by the action of the reaction force canceling means 9. That is, even when the rotary blade z1 of the slider J receives a reaction force from the paper P, the protrusions 53 and 73 provided on the front rail receiving member Q and the rear rail receiving member R have the receiving recesses 15 provided on the base B. By abutting on the rail 35, the reaction force acting on the rail C is canceled.

When releasing the state in which the rail C is locked to the lower position (a), the user operates the release operation portions s23 and t23 of the front and rear rail support members S and T to perform the front and rear. The upright portions s2 and t2 of the rail support members S and T are temporarily elastically deformed outward. As a result, the engaging portions 64 and 84 of the front rail receiving member Q and the rear rail receiving member R are separated from the locking portions s21 and t21 provided on the front rail supporting member S and the rear rail supporting member T, and the rails are separated from each other. C receives the urging force of the front spring D and the rear spring E and returns to the upper position (b).

When the number of sheets of paper P to be cut is relatively small, it may not be necessary to reciprocate the slider J with respect to the rail C a plurality of times, and the paper P may be cut. In other words, it may not be necessary to lower the rail C and hold the paper P on the base body K in advance before gripping the slider J. In such a case, the user touches the slide operation portions s24 and t24 of the front and rear rail support members S and T to lock the front and rear rail support members S and T in advance at the lockable position (sa). The position is changed from (ta) to the retracted position (sb) and (tb). The front and rear rail support members S and T at the retracted positions (sb) and (tb) are engaged with the front rail receiving member Q and the rear rail receiving member R even when the position is changed to the lower position (a). It becomes impossible to engage with the joints 64 and 84. By doing so, when the number of sheets of paper P to be cut is relatively small, the rail C shifts to the lower position (a) along with the operation of the slider J, and the rail C moves to the lower position (a). The rail C can be automatically returned to the upper position (b) by finishing the operation of the slider J by the user.

As described above, the cutting machine A according to the present embodiment has a base B having an upward surface k1 on which the paper P is arranged, a lower position (a) close to the base B, and a lower position thereof. A rail C movably supported between the upper position (b) farther from (a) and a paper retainer F supported by the rail C that can hold the paper P to be cut at least in the lower position (a). The rotary blade z1 capable of cutting the paper P is held at a position outside one side edge of the rail C, and is provided with a slider J supported so as to be slidable with respect to the rail C. The cutting machine A is provided with a reaction force canceling means 9 on the other side edge side of the rail C capable of canceling the reaction force received by the rotary blade z1 from the paper P during the cutting operation.

Therefore, it is possible to provide a cutting machine A having an excellent degree of freedom in design for forming the rail C that supports the slider J. That is, since the reaction force canceling means 9 is provided on the other side edge side of the rail C, the reaction force acting on the slider J on one side edge side of the rail C can be suitably canceled via the rail C. .. Therefore, the reaction force acting on the slider J is not finally absorbed by the rail C, but is absorbed by the reaction force canceling means 9, so that problems such as distortion of the rail C are suitably suppressed. It has become. If the cutting machine A is provided with the reaction force canceling means 9, the rail C is distorted, and as a result, the occurrence of a problem that the paper P cannot be cut straight is suppressed.

The rail C extends linearly in the front-rear direction, the front rail receiving member Q attached to the front end of the rail body N, and the rear rail receiving member R attached to the rear end of the rail body N. And have. Then, the reaction force canceling means 9 directly provides the protrusions 53 and 73 integrally provided on the front rail receiving member Q and the rear rail receiving member R, respectively, and the protrusions 53 and 73 at the lower position (a). It is provided with receiving recesses 15 and 35 which are contact portions provided on the base B which can be in contact with each other. Therefore, the reaction force transmitted from the slider J and acting on the rail C is transmitted to the base B stably mounted on the mounting surface, so that the reaction force can be suitably absorbed. There is.

The rail C is urged in the direction of the upper position (a) by the front spring D, which is an urging member arranged between the front rail receiving member Q and the base B, and the rear rail receiving member R and the base B The rail C is urged in the direction of the upper position (a) by the rear spring E, which is an urging member arranged between the two. Therefore, the user who operates the slider J presses the slider J downward against the urging force of the rail C, and therefore receives the corresponding reaction force from the paper P. In those premised on such a configuration, the reaction force canceling means 9 can work suitably.

The base B has a base body K having an upward surface k1, a front base portion L provided at the front end portion of the base body K, and a rear base portion M provided at the rear end portion of the base body K. It is prepared. The protruding portion 53 of the front rail receiving member Q can come into contact with the front base portion L, and the protruding portion 73 of the rear rail receiving member R can come into contact with the rear base portion M. Therefore, the reaction force transmitted from the slider J and acting on the front rail receiving member Q and the rear rail receiving member R of the rail C is stably mounted on the mounting surface, and the front base portion L and the rear base portion of the base B are stably mounted. Since it is transmitted to M, the reaction force can be suitably absorbed without interfering with the upward surface k1 on which the paper P is placed.

The paper retainer F is supported so as to be relatively movable in the vertical direction with respect to the rail C, and is supported on the upward surface by the paper retainer spring G which is an urging member for the paper retainer interposed between the paper retainer F and the rail C. Being urged in the direction. Therefore, the paper P can be appropriately pressed according to the number of sheets of paper P to be cut. Moreover, only one of the front rail lock mechanism H and the rear rail lock mechanism I is operating in the locked state, or either the front rail lock mechanism H or the rear rail lock mechanism I is accompanied by the slide operation. Even if the rail C is tilted with respect to the upward surface k1 of the base B when the rail C is operated in the locked state in order from one side, the paper retainer F appropriately puts the paper P on the base B. On the other hand, it can be suppressed.

The slider J supports the rotary blade z1 so as to be relatively movable in the vertical direction with respect to the slider base U and the opening / closing body main body w1 constituting the slider main body, and the rotary blade z1 is attached to the rotary blade. It is urged in the direction of the upward surface k1 by the blade holder spring w4 which is a force member. Therefore, the user who operates the slider J presses the slider J downward against the urging force of the blade holder spring G, and therefore receives the corresponding reaction force from the paper P. In those premised on such a configuration, the reaction force canceling means 9 can work suitably.

The slider body has an engaging recess u11 that engages with the rail C, and is slidably mounted on the slider base U, an operation handle V mounted on the slider base U, and a slider base U. It is provided with an opening / closing body main body w1 constituting the opening / closing body W supported so as to be openable / closable. The opening / closing body W includes an opening / closing body main body w1 pivotally supported by the slider base U, and a blade holder w3 that is vertically movablely supported by the opening / closing body main body w1 and can hold the rotary blade z1. It is a thing. The blade holder w3 is urged in the direction of the upward surface k1 by the blade holder spring w4 which is an urging member for the rotary blade z1. Therefore, the user who operates the slider J presses the slider J downward against the urging force of the blade holder spring G that urges the blade holder w3 that can hold the rotary blade z1. It will receive the reaction force from the corresponding paper P. In those premised on such a configuration, the reaction force canceling means 9 can work suitably.

The present invention is not limited to the embodiment described in detail above.

The size of the cutting machine can be variously adopted depending on the number of sheets that can be cut and the like.

Various specific configurations of the reaction force canceling means can be adopted, and the specific configuration is not limited to that shown in the above-described embodiment. For example, it may be configured so that the protruding portion protruding from the rail can be brought into contact with the base body.

In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

A ... Cutting machine B ... Base C ... Rail F ... Paper holder J ... Slider P ... Paper (a) ... Lower position (b) ... Upper position 9 ... Reaction force canceling means

Claims (5)

A base with an upward surface on which paper is placed, a rail movably supported between a lower position close to the base and an upper position farther from this lower position, and this rail. A paper retainer that is supported and can hold the paper to be cut at least in the lower position and a rotary blade that can cut the paper are held at a position outside one side edge of the rail and slid with respect to the rail. It is a cutting machine equipped with a slider that is supported as much as possible.
On the opposite side of the rotary blade across the rail, a reaction force canceling means capable of canceling the upward reaction force received by the rotary blade from the paper during the cutting operation is provided .
The rail includes a rail body extending linearly in the front-rear direction, a front rail receiving member attached to the front end of the rail body, and a rear rail receiving member attached to the rear end of the rail body. Rail
The reaction force canceling means is provided on the base where the protrusions can be directly contacted with the protrusions integrally provided on the front rail receiving member and the rear rail receiving member, respectively. A cutting machine equipped with parts . The rail is urged in the direction of the upper position by the urging member arranged between the front rail receiving member and the base, and is arranged between the rear rail receiving member and the base. The cutting machine according to claim 1 , wherein the rail is urged in the direction of the upper position by an urging member. The cutting machine according to claim 1 or 2 , wherein the protruding portion may come into contact with a portion other than the paper arrangement range in the base. The paper retainer is supported so as to be relatively movable in the vertical direction with respect to the rail, and is urged in the upward surface direction by an urging member for the paper retainer interposed between the paper retainer and the rail. The cutting machine according to claim 1, 2 or 3. A base having an upward surface on which paper is placed, a rail movably supported between a lower position close to the base and an upper position farther from this lower position, and this rail. A paper retainer that is supported and can hold the paper to be cut at least in the lower position and a rotary blade that can cut the paper are held at a position outside one side edge of the rail and slid with respect to the rail. It is a cutting machine equipped with a slider that is supported as much as possible.
On the opposite side of the rotary blade across the rail, a reaction force canceling means capable of canceling the upward reaction force received by the rotary blade from the paper during the cutting operation is provided.
The slider supports the rotary blade so as to be relatively movable in the vertical direction with respect to the slider main body.
A cutting machine in which the rotary blade is urged in the upward direction by a urging member for the rotary blade.

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