JP2012152848A - Cutter, cutting blade cover, and method of replacing cutting blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method capable of safely replacing a cutting blade.SOLUTION: This cutter cuts paper sheets placed between a blade receiving member put in the blade receiving member placing groove of a pedestal and a cutting blade by pressing down the cutting blade 4 which is tapered at the lower rear portion and has an edge at the lower portion. The cutter includes a cutting blade cover 7 used when the cutting blade 4 is replaced. The cutting blade cover includes a rear plate 71 which is positioned at the rear and extends laterally, and a front plate 72 which is positioned forward of the rear plate 71 and extends laterally. A storage space 75 in which the edge of the cutting blade 4 is stored is formed between the rear plate 71 and the front plate 72, and the longitudinal length of the cutting blade cover is shorter than the longitudinal length of the blade receiving member placing groove. Consequently, when the cutting blade 4 is replaced, the cutting blade cover can be inserted into the blade receiving member placement groove.

Description

  The present invention relates to a cutting machine, a cutting blade cover used when exchanging cutting blades in the cutting machine, and a cutting blade exchanging method for exchanging cutting blades using the cutting blade cover.

  There is a cutting machine that cuts paper sheets and the like on a straight line. This cutting machine is provided with a cutting blade. However, if the cutting blade is used continuously, it may be dull or sharp due to spillage or wear. . When exchanging the cutting blade, there is a risk of danger if the cutting edge of the cutting blade is exposed. Therefore, a method for safely exchanging the cutting blade is required. In Patent Document 1, as a proposal for safely exchanging the cutting blade, an L-shaped knife case or a support member that covers the outside of the knife case is attached to the cutting blade, and the cutting blade is attached after covering the blade tip. Proposal for removal has been made.

JP-A-11-267919

  According to the proposal of Patent Document 1, the cutting blade can be safely removed, but a sufficient space around the cutting blade is required to arrange the support member and the like. Therefore, there is a problem that it cannot be used when there is not enough space for arranging the support member around the cutting blade.

  Further, when exchanging the cutting blade in a conventional cutting machine, there are many work steps such as removing a spring that supports the cutting blade, which is troublesome for the user.

  The present invention has been made in view of the above-described problems of the prior art, and includes a cutting machine having a structure that enables easy replacement of the cutting blade, and even if there is not enough space around the cutting blade. It is an object of the present invention to provide a cutting blade cover that can safely replace the cutting blade and a cutting blade replacement method using the cutting blade cover.

  The present invention relates to a pedestal, left and right legs standing vertically from the pedestal, a handle pivotally attached to the legs by a main shaft, a cutting blade that is supported at a position near the lower portion of the main shaft in the left and right legs, and the cutting A cutting machine comprising a cutting blade holding mechanism for holding a blade, and a blade receiving member disposed at a position directly below the cutting blade in the pedestal, wherein the cutting blade is formed in a tapered shape at the lower and rear sides. The cutting blade holding mechanism is disposed behind the cutting blade, a paper pressing member disposed in front of the cutting blade, a spacer disposed above the cutting blade, A rear mounting plate fixed to the spacer, and the cutting blade is fixed to the rear mounting plate by a plurality of screws, and the rear mounting plate is mounted movably relative to the paper pressing member. The rear mounting plate Between the paper pressing member, characterized in that the rear mounting plate return spring urges upwardly relative said paper pressing member the rear mounting plate is mounted.

  Further, the present invention provides a blade receiving member placed in a blade receiving member placement groove of a pedestal by pressing down a cutting blade having a lower and rear tapered shape and having a cutting edge below, and the cutting blade A cutting blade cover used when the cutting blade is replaced with a cutting machine that cuts a paper sheet or the like placed between the cutting blade cover and the cutting blade cover is located rearward and extends in the left-right direction. A plate and a front plate located in front of the rear plate and extending in the left-right direction, and having a storage space for storing the cutting edge of the cutting blade between the rear plate and the front plate The blade receiving member mounting groove can be inserted into the blade receiving member mounting groove by forming the thickness thinner than the width of the blade receiving member mounting groove.

  Furthermore, in the cutting blade cover of the present invention, the rear plate has a tapered surface formed in a tapered shape from the vicinity of the upper end toward the lower front, and the lower end of the tapered surface is connected to the front plate, and the front plate The plate is formed to be shorter in the vertical direction than the rear plate, and has a plurality of engagement protrusions that engage with the front surface of the cutting blade at the upper edge, and the outer surface of the rear plate and the front plate A fixing member engaging groove for attaching a fixing member for fixing the cutting blade and the cutting blade cover in a state where the cutting blade is stored in the storage space is formed.

  Then, the present invention provides a pedestal, left and right legs standing vertically from the pedestal, a handle pivotally attached to the leg by a main shaft, a lock mechanism for prohibiting the operation of the handle, and the main shaft of the left and right legs. A cutting blade that is supported near the lower position, a cutting blade holding mechanism that holds the cutting blade, a fishing spring that supports the cutting blade and the cutting blade holding mechanism, and a tension for the fishing spring. A cutting blade exchanging method in a cutting machine comprising a cutting blade fishing support mechanism having a switching lever for switching between a state and a relaxed state, and a blade receiving member disposed at a position directly below the cutting blade in the pedestal. When the cutting blade is removed, the blade receiving member is extracted from the blade receiving member placement groove, the cutting blade cover described in any of the above is inserted into the blade receiving member placement groove, and the cutting blade fishing is inserted. Branch The structure switching lever is switched to a relaxed state, the handle is rotated downward, the attachment member fixing the cutting blade to the cutting blade holding mechanism is removed, and the handle is rotated upward to move the lock mechanism. When the cutting blade cover is removed from the blade receiving member mounting groove together with the cutting blade and the cutting blade is attached, the cutting blade is stored. The cutting blade cover is inserted into the blade receiving member mounting groove together with the cutting blade, the handle is rotated downward, the cutting member is fixed to the cutting blade holding mechanism by the mounting member, and the handle is fixed. Rotate upward and prohibit the operation of the handle by the lock mechanism, switch the cutting blade fishing support mechanism switching lever to the tensioned state, and place the blade receiving member Withdrawing said cutting blade cover from, characterized in that inserting the blade receiving member to the blade receiving member mounting 置溝.

  According to the present invention, a cutting machine having a structure that enables easy replacement of the cutting blade, a cutting blade cover that can safely replace the cutting blade even if there is not enough space around the cutting blade, and this cutting A cutting blade replacement method using a blade cover can be provided.

It is a back perspective view of the cutting machine concerning the embodiment of the present invention. It is a back perspective view in the state where the main body cover of the above-mentioned cutting machine was removed. It is a disassembled perspective view except the main body cover of the said cutting machine. It is the front perspective view and back perspective view of the cutting blade holding | maintenance mechanism in the state which hold | maintained the cutting blade. It is the front perspective view and back perspective view of a cutting blade cover. It is the front perspective view and back perspective view of a cutting blade cover in the state in which the cutting blade was accommodated. It is a both-sides view of the cutting blade cover in the state in which the cutting blade was accommodated, and AA and BB sectional drawing of FIG. It is explanatory drawing which shows the replacement | exchange method of a cutting blade. It is explanatory drawing which shows the replacement | exchange method of a cutting blade. It is explanatory drawing which shows the replacement | exchange method of a cutting blade. It is explanatory drawing which shows the replacement | exchange method of a cutting blade. It is explanatory drawing which shows the replacement | exchange method of a cutting blade.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. The present invention relates to a method for easily and safely exchanging a cutting blade in a cutting machine for cutting a paper sheet or the like. First, after describing the configuration of the cutting machine according to the present embodiment, a cutting blade cover used for replacing the cutting blade and a replacement method will be described. FIG. 1 is a rear perspective view of a cutting machine 1 according to an embodiment of the present invention, FIG. 2 is a rear perspective view of the cutting machine with a main body cover 8 removed, and FIG. FIG. In the following description, the direction in which the handle is located is the upper direction, the direction in which the pedestal is located is the lower direction, the direction in which the main body cover 8 is located on the pedestal is the rear, the direction facing the rear is the front, and is orthogonal to the up and down and front and rear directions The direction to perform is described as the left-right direction.

  As shown in FIGS. 1 to 3, the cutting machine 1 includes a pedestal 2 whose upper surface is a sheet placement surface 2 a, a cutting unit 3 that cuts a sheet or the like located near the rear end of the pedestal 2, and a cutting unit And a handle 9 that rises upward from the cutting portion 3 that operates the blade 4. The cutting machine 1 includes a cutting blade 4 and a blade receiving member (receiving tree) 25 positioned below the cutting blade 4, and inserts a paper sheet between the cutting blade 4 and the blade receiving member 25. In this device, the paper sheet can be cut linearly by rotating the handle 9 downward.

  The pedestal 2 of the cutting machine 1 is a rectangular thick plate, a plurality of legs are attached to the bottom surface, and the top surface is a paper sheet placement surface 2a. On the paper sheet placement surface 2a, a scale serving as a standard for alignment when cutting a paper sheet is drawn, and a guide member 23 used for alignment is arranged. Further, a blade receiving member mounting groove 27 on which the blade receiving member 25 is mounted extends in the left-right direction near the rear end of the paper sheet mounting surface 2a. The blade receiving member placement groove 27 has an opening on one side surface of the base 2, and the blade receiving member 25 is detachable from the opening. The blade receiving member 25 is a member that receives the cutting edge of the cutting blade 4 during cutting, and is formed of wood or resin and has a rectangular parallelepiped shape that extends in the left-right direction. Then, since this blade receiving member 25 is damaged by the cutting edge of the cutting blade 4 by continuing use, it is extracted from the opening on the side surface of the base 2 in the blade receiving member mounting groove 27, and a new one is inserted. It can be exchanged.

  The handle 9 includes left and right foot members 91 and 92 and a gripping member 93 that connects upper end portions of the left and right foot members 91 and 92, and is pivotally attached to the left and right legs 31 and 32 described later by a main shaft 34. Yes. The left and right foot members 91 and 92 are provided with blade pressing portions 91a and 92a projecting in opposite directions in the vicinity of the lower ends, respectively, and when the handle 9 is rotated downward, the blade pressing portions 91a and 92a are cut blades described later. It contacts the upper end portion of the holding mechanism 41 and pushes the cutting blade 4 downward. Further, an engaging portion 91b that is engaged by a lock mechanism 61 described later is formed in the vicinity of the upper portion of the blade pressing portion 91a of the left foot member 91.

  The cutting part 3 is covered with the main body cover 8, and the left and right legs 31, 32 arranged so as to straddle the blade receiving member mounting groove 27 and the cutting blade 4 are held inside the main body cover 8. A cutting blade holding mechanism 41, a cutting blade fishing support mechanism 51 that supports the cutting blade while holding the cutting blade holding mechanism 41 upward, and a lock mechanism 61 that stops the handle 9 while rotating upward. .

  The left and right legs 31 and 32 are metallic thick plates provided with cutouts 31a and 32a extending downward in the vertical direction, and the cutouts 31a and 32a are located near the rear end of the base 2 The blade receiving member mounting groove 27 is fixed so as to be positioned above. A main shaft 34 is supported on the left and right legs 31 and 32 in the vicinity of the center of the rear end, and a horizontal bar 35 used in the lock mechanism 61 is fixed above the main shaft 34.

  The cutting blade 4 is a metal blade having a blade edge on the lower side by forming a taper shape on the lower rear side, and has four attachment holes 4a penetrating in the front-rear direction.

  The cutting blade holding mechanism 41 includes a paper pressing member 42 disposed in front of the cutting blade 4 and a spacer 45 disposed above the cutting blade 4 as shown in FIGS. 3 and 4A and 4B. And a rear mounting plate 44 disposed behind the cutting blade 4 and fixed to the spacer 45.

  The paper pressing member 42 is a rectangular plate, and is formed with a notch as a handle avoiding portion 42a into which the blade press-down portions 91a and 92a enter when the handle 9 is rotated to an upper left-right symmetrical position. A cutout serving as a guide 42b when the cutting blade 4 is lowered is formed on the outer side of the avoiding portion 42a. Further, an L-shaped elastic body retaining member 42c is attached to the center of the paper pressing member 42 toward the upper rear side.

  The spacer 45 is a plate-like body extending in the left-right direction, and the length in the front-rear direction is substantially the same as the cutting blade 4. The spacer 45 is a member that comes into contact with the blade pressing portions 91a and 92a when the handle 9 is rotated downward, and presses the cutting blade 4 downward.

  The rear mounting plate 44 is a plate-like body extending in the left-right direction, and is fixed to the spacer 45 by a plurality of screws or the like. In the vicinity of the lower end of the rear mounting plate 44, four through holes 44b through which screws pass are formed at positions overlapping with the mounting holes 4a of the cutting blade 4. The rear mounting plate 44 is arranged behind the cutting blade 4 in a state in which the through hole 44b and the mounting hole 4a of the cutting blade 4 are overlapped, and connects the through hole 44b and the mounting hole 4a with a mounting member such as a screw 47. This is fixed to the cutting blade 4. A rear mounting plate return spring 46 is mounted between the rear end portion of the elastic body retaining member 42c attached to the paper pressing member 42 and the rear mounting plate 44, and the rear mounting plate 44 The mounting plate return spring 46 is biased upward together with the cutting blade 4 relative to the paper pressing member 42.

  The cutting blade holding mechanism 41 configured as described above is disposed above the blade receiving member mounting groove 27 of the base 2 with both sides penetrating the notches 31a, 32a of the left and right legs 31, 32. The blade pressing portions 91a and 92a of the handle 9 are positioned above the cutting blade holding mechanism 41.

  As shown in FIGS. 2 and 3, the cutting blade fishing support mechanism 51 includes symmetrical switching levers 52 and 53 that are rotatably mounted on the left and right legs 31 and 32, respectively, and the front of the paper pressing member 42. From the guide screws 54 and 55 fixed to the spacer 45 and the rear mounting plate 44 through the guide 42b of the paper pressing member 42, and for the fishing support attached between the switching levers 52 and 53 and the guide screws 54 and 55. And springs 56 and 57.

  The switching levers 52 and 53 are plate-like shaft support portions 52a and 53a that are pivotally supported by the left and right legs 31 and 32, and an elastic body mounting portion that is positioned in the vicinity of the shaft support portions 52a and 53a and rises inward from the flat plate. 52b, 53b, and gripping parts 52c, 53c that rise inward from the flat plate at positions spaced apart from the elastic body mounting parts 52b, 53b by a predetermined distance. The switching levers 52 and 53 are pivotally supported so as to be rotatable in the vicinity of the front upper ends of the left and right legs 31 and 32, that is, forward and upward from the position where the cutting blade holding mechanism 41 is disposed.

  The cutting blade fishing support mechanism 51 can be in a tensioned state in which the fishing support springs 56 and 57 are stretched and tensioned by rotating the switching levers 52 and 53 rearward. The fishing support springs 56 and 57 can be brought into a relaxed state by turning them forward. Then, the cutting blade fishing support mechanism 51 in the tensioned state is a position where the cutting blade holding mechanism 41 is close to the upper ends of the notches 31a and 32a of the left and right legs 31 and 32 by urging the guide screws 54 and 55 upward. To support fishing.

  Thus, the cutting blade 4 is held by the cutting blade holding mechanism 41, and when the cutting blade holding mechanism 41 is biased upward by the cutting blade fishing support mechanism 51, the blade receiving member 25 and A gap for placing a paper sheet is formed between the two. Then, when the cutting machine 1 places a paper sheet in the gap between the cutting blade 4 and the blade receiving member 25 and rotates the handle 9 downward, the blade pressing portions 91a and 92a of the handle 9 are moved to the cutting blade. The cutting blade holding mechanism 41 comes down together with the cutting blade 4 against the elastic force of the fishing springs 56 and 57 of the cutting blade fishing support mechanism 51 in contact with the spacer 45 and the rear mounting plate 44 of the holding mechanism 41, and cuts. The lower end of the paper pressing member 42 of the blade holding mechanism 41 contacts the paper sheet and presses the paper sheet against the paper sheet placement surface 2a of the base 2. When the handle 9 is further rotated downward, the spacer 45 and the rear mounting plate 44 of the cutting blade holding mechanism 41 are lowered relative to the paper pressing member 42 against the elastic force of the rear mounting plate return spring 46. The cutting blade 4 is lowered together with the spacer 45 and the rear mounting plate 44 to cut the paper sheet. Further, when the spacer 45 and the rear mounting plate 44 move relative to the paper pressing member 42, the guide screws 54 and 55 of the cutting blade fishing support mechanism 51 move along the guide 42b of the paper pressing member 42. The cutting blade 4 is lowered while sliding in the lateral direction. Therefore, the paper sheet can be easily cut.

  As shown in FIG. 3, the lock mechanism 61 includes a horizontal bar 35 fixed to the left and right legs 31, 32, a lock member 63 that is rotatably inserted into the horizontal bar 35, and a front and lower portion of the lock member 63. And a torsion spring 65 urging the spring. The horizontal bar 35 is fixed to the left and right legs 31 and 32 at a position above the main shaft 34. The lock member 63 includes a hole 63a that is inserted through the horizontal bar 35, a notch 63b that engages with the engagement portion 91b of the handle 9, and an operation portion 63c that is operated to release the engagement state. The notch 63b is urged downward by the spring 65. Then, the lock mechanism 61 prohibits the operation of the handle 9 by inserting the engagement portion 91b of the handle 9 into the notch 63b of the lock member 63, and moves the engagement portion 91b of the handle 9 from the notch 63b of the lock member 63. The handle 9 is released by removing it.

  When exchanging the cutting blade 4 in the cutting machine 1 in this embodiment, the blade receiving member 25 is removed from the blade receiving member mounting groove 27, the switching levers 52 and 53 are rotated forward to be in a relaxed state, and the handle 9 Is rotated to the lower end, a plurality of (four in this embodiment) screws 47 as attachment members are removed, the handle 9 is rotated upward and locked by the lock mechanism 61, and the cutting blade 4 is mounted on the blade receiving member. The cutting blade 4 can be removed by pulling it out of the setting groove 27, and the cutting blade 4 can be mounted by working in the reverse order. Therefore, since it is not necessary to remove the spring as in the prior art, the cutting blade 4 can be easily replaced.

  Thus, the cutting machine 1 of the present embodiment can easily replace the cutting blade 4, but the cutting blade 4 replacement method in the present embodiment so that the cutting edge of the cutting blade 4 does not remain exposed. Then, the cutting blade 4 is replaced by using the cutting blade cover 7 that covers the cutting edge. Hereinafter, the cutting blade cover 7 will be described. 5 (a) is a front perspective view of the cutting blade cover 7, FIG. 5 (b) is a rear perspective view of the cutting blade cover 7, and FIG. 6 (a) is stored in the cutting blade 4 of the cutting blade cover 7. FIG. FIG. 6B is a rear perspective view in a state in which the cutting blade 4 of the cutting blade cover 7 is housed. 7A is a left side view of the cutting blade cover 7 with the cutting blade 4 stored therein, and FIG. 7B is a right side view of the cutting blade cover 7 with the cutting blade 4 stored therein. 7 (c) is a cross-sectional view taken along line AA in FIG. 6 (a), and FIG. 7 (d) is a cross-sectional view taken along line BB.

  As shown in FIGS. 5 to 7, the cutting blade cover 7 is located on the rear side and extends in the left-right direction, and the front plate 72 located in front of the rear plate 71 and extending in the left-right direction. And a storage space 75 for storing the cutting edge of the cutting blade 4 between the rear plate 71 and the front plate 72. The front surface of the rear plate 71 is tapered from the vicinity of the upper end toward the lower front to form a tapered surface 71a, and the lower end of the tapered surface 71a is connected to the front plate 72. That is, the storage space 75 is formed by the tapered surface 71a of the rear plate 71 and the front plate 72. The front plate 72 is formed with a length in the vertical direction lower than that of the rear plate 71, that is, a height, and has a plurality of engagement protrusions 72a that engage with the front surface of the cutting blade 4 at the upper end edge. . The distance from the rear surface of the rear plate 71 to the front surface of the front plate 72, that is, the thickness of the cutting blade cover 7, is the length in the front-rear direction of the blade receiving member mounting groove 27 formed on the base 2, that is, the blade The receiving member mounting groove 27 is formed to be thinner than the width of the receiving member mounting groove 27 and is sized to be inserted into the blade receiving member mounting groove 27. Furthermore, the length of the cutting blade cover 7 in the left-right direction, that is, the length of the cutting blade cover 7 in the longitudinal direction is formed substantially the same as the length of the pedestal 2 in the left-right direction.

  Further, when the cutting blade cover 7 is fixed by winding the periphery with a fixing member such as a wire or a vinyl tie in the state where the cutting edge of the cutting blade 4 is housed in the cutting blade cover 7 on the rear plate 71 and the front plate 72, A plurality of fixing member engaging grooves 73 are formed to prevent the fixing member from shifting from side to side. Further, a left side plate 76 and a right side plate 77 are connected to the sides of the rear plate 71 and the front plate 72, and a knob as a gripping portion protruding toward the side outward is provided near the lower end of the right side plate 77. 77a is formed. In addition, narrow portions 78 and 79 are formed inside the left side plate 76 and the right side plate 77 so as to reduce the gap of the storage space 75. The narrow portions 78 and 79 are formed by the narrow portions 78 and 79, respectively. The distance between the inner end portions of the cutting blade 4 is longer than the length of the cutting blade 4 in the longitudinal direction.

  The cutting blade 4 has a tapered portion (cutting edge) and the tapered surface 71a of the rear plate 71 of the cutting blade cover 7 which are in close contact with each other, and the front side is engaged by the engagement protrusion 72a. The blade edge is covered with the cutting blade cover 7.

  Next, a method for replacing the cutting blade 4 using the cutting blade cover 7 in the cutting machine 1 of the present embodiment will be described. First, the user removes the main body cover 8 and, as shown in FIG. 8A, pulls the blade receiving member 25 sideways from the blade receiving member mounting groove 27 of the pedestal 2 and removes it. As shown in FIG. 9, the cutting blade cover 7 is slid and inserted into the blade receiving member mounting groove 27 so that the knob 77a is located outward, and as shown in FIG. Insert the cutting blade cover 7 until it hits the back of 27. Next, as shown in FIG. 9B, the user turns the switching levers 52 and 53 forward to bring the fishing support springs 56 and 57 into a relaxed state, and turns the lock member 63 backward. The handle 9 is unlocked and the handle 9 is rotated forward to the lowest end. When the handle 9 is rotated forward to the lowermost end, the cutting blade 4 enters the vicinity of the lower end of the storage space 75 of the cutting blade cover 7.

  After rotating the handle 9 to the lowest end, the user removes the plurality of screws 47 that fix the cutting blade 4 to the cutting blade holding mechanism 41 as shown in FIG. When all the screws 47 are removed, the cutting blade 4 is detached from the cutting blade holding mechanism 41 and the blade tip is stored in the storage space 75 of the cutting blade cover 7 as shown in FIG. Next, the user rotates the handle 9 upward until it is locked as shown in FIG. 11 (a), and the cutting blade cover 7 together with the cutting blade 4 is located outside the side as shown in FIG. 11 (b). The cutting blade cover 7 is completely extracted from the blade receiving member mounting groove 27 as shown in FIG.

  Then, the user prepares the cutting blade 4 with the cutting blade cover 7 mounted on the blade edge, and slides and inserts it into the receiving member mounting groove 27 as shown in FIGS. 11 (b) and 11 (a). Then, as shown in FIG. 10B, the handle 9 is rotated downward to move the cutting blade holding mechanism 41 downward, and as shown in FIG. Fixed to the cutting blade holding mechanism 41, as shown in FIG. 9 (a), the handle 9 is rotated upward, the operation of the handle 9 is prohibited by the lock mechanism 61, and the switching levers 52, 53 are rotated backward. Then, the fishing support springs 56 and 57 are switched to the tension state, the cutting blade cover 7 is extracted from the blade receiving member mounting groove 27, and the blade receiving member 25 is inserted into the blade receiving member mounting groove 27.

  By exchanging the cutting blade 4 in this way, the cutting edge of the cutting blade 4 removed from the cutting blade holding mechanism 41 is always located in the storage space 75 of the cutting blade cover 7, so that the cutting edge is exposed. This can be prevented, and the cutting edge 4 of the cutting blade 4 to be mounted can be fixed to the cutting blade holding mechanism 41 without being exposed. Therefore, the cutting blade 4 can be safely replaced with simple work.

  That is, in the method for replacing the cutting blade 4 according to the present embodiment, the cutting member cover groove 27 on which the replaceable receiving member 25 is mounted is used as a space for inserting the cutting blade cover 7 to cut the cutting blade. Even if there is no wide space around the edge of the blade 4, it is possible to safely replace the cutting blade 4 while covering the cutting edge of the cutting blade 4.

  In addition, this invention is not limited to the above embodiment, In the range which does not deviate from the summary of invention, a change and improvement are possible freely.

1 Cutting machine
2 Pedestal 2a Paper sheet placement surface
3 Cutting section 4 Cutting blade
4a Mounting hole 7 Cutting blade cover
8 Body cover 9 Handle
23 Guide member 25 Blade receiving member
27 Blade receiving member mounting groove
31,32 legs
31a, 32a Notch
34 Spindle 35 Horizontal bar
41 Cutting blade holding mechanism 42 Paper holding member
42a Handle avoidance part 42b Guide
42c Elastic body retaining member
44 Rear mounting plate 44b Through hole
45 Spacer 46 Rear mounting plate return spring
47 Screw 51 Cutting blade fishing support mechanism
52,53 Switching lever 52a, 53a Shaft support
52b, 53b Elastic body mounting part 52c, 53c Gripping part
54,55 Guide screw
56,57 Spring for fishing support 61 Lock mechanism
63 Lock member 63a hole
63b Notch 63c Operation section
65 Torsion spring
71 Rear plate 71a Tapered surface
72 Front plate 72a Engagement protrusion
73 Fixing member engaging groove 75 Storage space
76 Left side plate
77 Right side plate 77a Knob
78,79 Narrow part
91,92 Foot member 91a, 92a Blade pressing part
91b Engagement section 93 Grip member

Claims (4)

A pedestal, left and right legs that rise vertically from the pedestal, a handle pivotally attached to the legs by a main shaft, a cutting blade and a cutting blade holding mechanism that are supported by the left and right legs near a position below the main shaft, A blade receiving member disposed at a position directly below the cutting blade in the pedestal, and a cutting machine comprising:
The cutting blade is formed in a tapered shape on the lower back and has a cutting edge on the lower side,
The cutting blade holding mechanism includes a paper pressing member disposed in front of the cutting blade, a spacer disposed above the cutting blade, and a rear mounting disposed behind the cutting blade and fixed to the spacer. A board,
The cutting blade is fixed to the rear mounting plate by a plurality of screws, the rear mounting plate is mounted so as to be relatively movable with respect to the paper pressing member, and between the rear mounting plate and the paper pressing member. The cutting machine is provided with a rear mounting plate return spring and biases the rear mounting plate relatively upward with respect to the paper pressing member. The lower and rear sides are formed in a tapered shape, and a cutting blade having a cutting edge on the lower side is pushed downward to be placed between the blade receiving member placed in the blade receiving member placement groove of the base and the cutting blade. A cutting blade cover used when exchanging the cutting blade with a cutting machine for cutting paper sheets,
The cutting blade cover includes a rear plate positioned rearward and extending in the left-right direction, and a front plate positioned in front of the rear plate and extending in the left-right direction, the rear plate and the front plate, The cutting blade has a storage space for storing the cutting edge, and the thickness is formed to be thinner than the width of the blade receiving member mounting groove so that the cutting blade can be inserted into the blade receiving member mounting groove. A cutting blade cover characterized by that. The rear plate has a tapered surface formed in a tapered shape from the vicinity of the upper end toward the lower front, and the lower end of the tapered surface is connected to the front plate,
The front plate is formed with a length in the vertical direction shorter than that of the rear plate, and has a plurality of engagement protrusions that engage with the front surface of the cutting blade at the upper edge.
A fixing member engaging groove for attaching a fixing member for fixing the cutting blade and the cutting blade cover in a state where the cutting blade is stored in the storage space is formed on the outer surface of the rear plate and the front plate. The cutting blade cover according to claim 2, wherein the cutting blade cover is provided. A pedestal, left and right legs standing vertically from the pedestal, a handle pivotally attached to the leg by a main shaft, a lock mechanism for prohibiting the operation of the handle, and a fishing support at a position near the lower side of the main shaft on the left and right legs A cutting blade, a cutting blade holding mechanism for holding the cutting blade, and a switching lever for switching a spring for fishing to support the cutting blade and the cutting blade holding mechanism between a tension state and a relaxation state. A cutting blade exchange method in a cutting machine comprising: a cutting blade fishing support mechanism; and a blade receiving member disposed at a position directly below the cutting blade in the pedestal,
When removing the cutting blade,
The blade receiving member is extracted from the blade receiving member mounting groove,
The cutting blade cover according to any one of claims 2 to 4 is inserted into the blade receiving member placement groove,
Switch the cutting lever fishing support mechanism switching lever to the relaxed state,
Rotate the handle downward,
Remove the mounting member fixing the cutting blade to the cutting blade holding mechanism,
Rotating the handle upward to prohibit the operation of the handle by the lock mechanism,
The cutting blade cover in a state where the cutting blade is accommodated is extracted from the blade receiving member mounting groove together with the cutting blade,
When attaching the cutting blade,
A cutting blade cover in which the cutting blade is stored is inserted into the blade receiving member mounting groove together with the cutting blade,
Rotate the handle downward,
Fixing the cutting blade to the cutting blade holding mechanism with the mounting member;
Rotating the handle upward to prohibit the operation of the handle by the lock mechanism,
Switch the cutting blade fishing support mechanism switching lever to the tension state,
Extract the cutting blade cover from the blade receiving member placement groove,
A cutting blade replacement method, wherein the blade receiving member is inserted into the blade receiving member mounting groove.

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