JP2006326788A - Sheet material-cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet material-cutting device which suppresses dispersion of a pressure contact force by stably pressure contacting a fixed blade and a movable blade, and extends a cutting life by obtaining a stable and smooth cutting. <P>SOLUTION: The sheet material-cutting device has the fixed blade, the movable blade which cuts the sheet material by sliding while intersectingly pressure contacting to the fixed blade, and a movable blade support member which supports the movable blade. The movable blade has a blade edge guide part guiding a blade edge of the movable blade to the fixed blade, and a flexible part provided at the rear end side in the cutting operation direction on both ends in the cutting width direction of the movable blade. The movable blade support member is equipped with the flexible part support member supporting the flexible part. The flexible part support member is equipped with a first support part disposed at the movable blade surface side contacting to the fixed blade, and a second support part disposed at the other surface side. In the sheet material cutting device, the first support part, the second part, and the fixed blade are arranged toward the cutting operation direction in this order, and the deflection of the flexible part in cutting operation is supported from the front and back surface of the flexible part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sheet material cutting apparatus that is used in a printer or the like, for example, for cutting roll paper or folded continuous paper into an arbitrary length.

A so-called slide-type sheet material cutting method that cuts a sheet material in cooperation with a fixed blade widely mounted on a printer or the like and arranged in the sheet material width direction and a movable blade that moves substantially perpendicular to the sheet material. In the apparatus, in order to obtain a stable and smooth cutting, it is required that the fixed blade and the movable blade are in proper pressure contact with each other. Further, in order to prevent biting of the sheet material at the time of cutting and obtain a better cutting, an appropriate intersection between the fixed blade and the movable blade is also required. In addition, it is desirable that the pressure contact force between the fixed blade and the movable blade is constant and stable from the start to the end of cutting.
Further, in a printer or the like, a sheet material cutting apparatus of a type that makes it possible to separate a movable blade portion and a fixed blade portion when not cutting and facilitates setting of roll paper or the like is becoming widespread. In this case, since the fixed blade and the movable blade cannot be press-contacted in advance, it is required to press the fixed blade and the movable blade appropriately together at the time of cutting.

  As means for bringing the fixed blade and the movable blade into pressure contact with each other, there is a means for providing an urging member such as a leaf spring or a coil spring to press the fixed blade or the movable blade, thereby urging the counterpart blade. For example, Patent Document 1 discloses a configuration example in which a fixed blade is urged to a movable blade by a leaf spring. Further, in Patent Document 1, in order to obtain an appropriate intersection between the fixed blade and the movable blade, it is bent and formed into a U-shape in advance with a substantially central portion in the cutting width direction of one or both of the fixed blade and the movable blade as a vertex. A configuration example is disclosed. With the above-described configuration, the fixed blade and the movable blade can obtain a certain pressure contact and intersection.

  Further, for example, Patent Document 2 has a configuration in which the movable blade rides on the fixed blade fixed to the frame at the time of cutting, and the movable blade is pressed against the fixed blade by using the elastic force of the movable blade itself. Disclose. According to this configuration, since the urging member and other members related thereto are not used, simplification and compactness of the sheet material cutting device itself can be facilitated. And also in this case, like patent document 1, the intersection of a fixed blade and a movable blade can be obtained by bending and forming a fixed blade and a movable blade beforehand in the shape of a letter. In addition, when the movable blade has a V-shaped cutting edge with a depressed central portion in the cutting width direction, the movable blade itself is elastic in the cutting width direction by pressing the movable blade against the fixed blade during cutting. Due to the deformation, the intersection of the fixed blade and the movable blade can thereby be obtained.

  Further, for example, Patent Document 3 discloses a configuration example in which the cutting ability is improved by further increasing the pressure contact force with respect to the configuration disclosed in Patent Document 2 described above. Specifically, the frame on which the fixed blade is fixed is provided with a convex portion that protrudes toward the side away from the movable blade in the pressure contact direction between the fixed blade and the movable blade, with the central portion in the cutting width direction of the frame as a peak. Form. Further, a guide hole for engaging a guide pin fixed to the movable blade is provided in a convex portion formed on the frame. As a result, as the movable blade moves toward the fixed blade at the time of cutting, the movable blade is pulled in the pressure contact direction by the guide pin, and the movable blade itself is further elastically deformed, and the pressure contact force between the fixed blade and the movable blade Can be further increased.

JP 2001-347485 A JP-A-9-155788 JP 2001-54892 A

  However, in the configuration disclosed in Patent Document 1, there is a large variation in elastic characteristics for each urging member, which causes a problem that the pressure contact force varies greatly for each sheet material cutting device. In order to suppress this, although there is a means for adjusting the preload for each biasing member, the production efficiency and the manufacturing cost are deteriorated. Further, the number of urging members and the number of parts related thereto is increased, the sheet material cutting device itself is complicated, and the compactization is not easy.

  Further, in the configuration disclosed in Patent Document 2, although the fixed blade and the movable blade can be pressed against each other without providing a biasing member, the fixed blade and the movable blade for obtaining the intersection of the fixed blade and the movable blade can be used. There has been a problem that the pressure contact force varies greatly due to variations in bending.

  Further, in the configuration disclosed in Patent Document 3, although the obtained press contact force is relatively large, the press contact force is different for each sheet material cutting device due to the dimensional accuracy of the projections formed on the frame and the variation in engagement with the guide pins. There was a problem that varied greatly. And by forming the convex part on the frame, the production efficiency and the manufacturing cost are deteriorated, and the sheet material cutting device itself is also deformed, thereby inhibiting the compactness.

  In view of the above problems, the object of the present invention is to stably and smoothly cut a fixed blade and a movable blade from the start to the end of cutting and suppress variations in the pressing force, thereby obtaining a stable and smooth cutting and a cutting life. It is providing the sheet | seat material cutting device which can be extended.

  The inventor examined the problem that the pressure contact force between the fixed blade and the movable blade varies when the sheet material is cut. The movable blade is provided with a blade guide portion and a special flexible portion, and the flexible portion is attached to the movable blade. It was set as the structure supported by the support part provided in the movable blade support member to support. With this configuration, the cutting edge guide portion provided on the movable blade abuts on the fixed blade to guide the cutting edge of the movable blade during the cutting operation, and the flexible portion provided on the movable blade bends convexly in the pressure contact direction of the fixed blade. Thus, the movable blade can be pressed against the fixed blade. Then, the inventors have found that the increase in the pressure contact force from the start to the end of the cutting can be suppressed and the variation in the pressure contact force can be reduced, and have arrived at the present invention.

  That is, the present invention is a sheet material cutting device having a fixed blade, a movable blade that slides while being in cross-contact with the fixed blade, and cuts the sheet material, and a movable blade support member that supports the movable blade. The movable blade has a blade edge guide portion that guides the blade edge of the movable blade with respect to the fixed blade, and a flexible portion that is provided on both sides in the cutting width direction of the movable blade and on the rear end side in the cutting operation direction. The movable blade support member includes a flexible portion support member that supports the flexible portion, and the flexible portion support member includes a first support portion disposed on a surface side of the movable blade that is in contact with the fixed blade. And the second support portion disposed on the other surface side, and arranged so as to be the first support portion, the second support portion, and the fixed blade toward the cutting operation direction, and the flexible at the time of the cutting operation It is a sheet material cutting device which supports the bending of a part from the front and back of this flexible part.

  In the present invention, the movable blade support member is disposed on the surface side opposite to the surface side that contacts the fixed blade of the movable blade, and engages with the second support portion to support the flexible portion of the movable blade. A third support can be provided.

  In the present invention, preferably, the movable blade is formed with a V-shaped cutting edge line. Further, the blade edge guide portion of the movable blade is formed on the side close to the fixed blade in the cutting operation direction of the movable blade and on both sides in the cutting width direction.

  In the present invention, the cutting edge formed in the V-shape of the movable blade is formed with a notch, and a switching mechanism capable of switching the stroke in the cutting operation direction of the movable blade between a full stroke and a shortened stroke is provided. The sheet material cutting device can cut the full width with a full stroke and can cut with a short stroke.

  Furthermore, in the present invention, the movable blade is separated from the fixed blade, and is driven in the cutting operation direction during the cutting operation, and slides while being in cross pressure contact with the fixed blade to cut the sheet material; can do.

  According to the present invention, there is no need to provide an urging member as another member such as a leaf spring, to form a bend such as forming a convex portion on the frame, or to bend and mold a fixed blade or a movable blade. This eliminates variations in the elastic characteristics of conventional urging members and variations in pressure contact force due to variations such as bending of the fixed blade, movable blade or frame, and stabilizes the fixed blade and movable blade from the start to the end of cutting. It is possible to press contact and suppress variations in press contact force. In addition, the sheet material cutting device itself can be simplified, which can greatly contribute to the downsizing and manufacturing cost reduction of devices such as printers and ticket vending machines equipped with the cutting device.

  An important feature of the present invention is that the movable blade has flexible portions provided on both sides in the cutting width direction and on the rear end side in the cutting operation direction, and the movable blade support member is a flexible member that supports the flexible portion. Provided with a part support member, the flexible part support member comprises a first support part disposed on the surface side in contact with the fixed blade of the movable blade, and a second support part disposed on the other surface side, A new configuration in which the first support part, the second support part, and the fixed blade are arranged in the cutting operation direction to support the bending of the flexible part during the cutting operation from the front and back surfaces of the flexible part. Is adopted.

  And in this invention, the flexible part provided in a movable blade exceptionally as mentioned above, and the support means of the movable blade which concerns on this flexible part are important. In the conventional movable blade not provided with a flexible portion, it is rigid and difficult to bend, and when the movable blade is moved in the cutting direction, the bending of the movable blade is difficult to stabilize. For this reason, the pressure contact force of the movable blade with respect to the fixed blade is likely to vary, and stable and smooth cutting is difficult to obtain. Moreover, when the movable blade is brought into contact with the fixed blade by providing the movable blade with a special flexible portion and supporting it by the first support portion and the second support portion provided in the flexible portion support member, The fixed blade, the first support portion, and the second support portion can be bent convexly in the press-contact direction with the fixed blade while supporting the flexible portion of the movable blade itself.

  With this configuration, there is no need to provide a biasing member as a separate member such as a conventional leaf spring, to form a bend such as forming a convex portion on the frame, or to bend and mold a fixed blade or a movable blade. The movable blade can be stably brought into pressure contact with the fixed blade. Also, with respect to the pressure contact force with the fixed blade, by changing the shape and size of the flexible portion, the distance to support the flexible portion, that is, the first support portion and the second support portion provided in the flexible portion support member. It can be set as appropriate by changing the interval. In the sheet material cutting device, the fixed blade and the movable blade can be stably pressed from the start to the end of the cutting, and variations in the pressing force can be suppressed, so that stable and smooth cutting can be obtained.

Hereinafter, it will be described in detail with reference to the drawings as appropriate.
The block diagram of the Example of the sheet | seat material cutting device in this invention is shown in FIG. The present invention includes a fixed blade 2, a movable blade 1 that slides while being in cross-contact with the fixed blade 2, and cuts the sheet material, and a movable blade support member 3 that supports the movable blade 1. The cutting device is the basic configuration.
The flexible part 5 provided in the movable blade 1 can be provided in the shape shown in FIG. 2, for example. FIG. 2 is a diagram schematically showing only the vicinity of one side of the flexible portion 5 provided on both sides in the cutting width direction of the movable blade 1 and on the rear end side in the cutting operation direction. In the flexible portion 5, for example, by changing the width formed along the cutting operation direction of the movable blade 1, the elasticity provided in the flexible portion 5 can be changed. The pressure due to the bending of the flexible portion 5 can be changed.

  For example, FIG. 2A shows an example in which the elasticity of the flexible part 5a can be made constant by making the flexible part 5a have the same width along the cutting operation direction by the notch 11a. Thereby, the press by the flexible part 5a can be stably maintained in the pressure contact. FIG. 2B shows an example in which the elasticity of the flexible portion 5b can be gradually reduced by gradually reducing the width of the flexible portion 5b along the cutting operation direction by the notch 11b. Thereby, the press by the flexible part 5b can be gradually reduced in the pressure contact. Further, FIG. (C) is an example in which an action almost opposite to that in FIG. 2 (b) can be obtained, and is an example in which the flexible portion 5c is formed by the notch 11c. FIG. 2D shows an example in which the flexible part 5d is formed by forming the hole 11d, and the same action as in FIG. 2A can be obtained.

  The flexible portion support member 10 that supports the flexible portion 5 of the movable blade 1 is a member that supports the flexible portion 5 and can prevent the movable blade 1 from falling off or smoothly move. A support portion 6 and a second support portion 7 are provided. Moreover, the flexible part support member 10 can be formed in the movable blade support member 3 which can be used also as the frame used as the outline of a sheet material cutting device, for example. Thereby, the flexible part support member 10 which comprises the 1st support part 6 and the 2nd support part 7 on both sides of the cutting | disconnection width direction of the flame | frame used as the movable blade support member 3 by press work, a bending process, etc. easily. Since it can form, it is preferable.

  As schematically shown in FIG. 3, the first support portion 6 provided on the flexible portion support member 10 supports the flexible portion 5 from the surface side that contacts the fixed blade 2 of the flexible portion 5. Further, the second support portion 7 provided on the flexible portion support member 10 and disposed between the first support portion 6 and the fixed blade 2 is a flexible portion from the side opposite to the first support portion 6. 5 is supported. When the movable blade 1 moves in the cutting direction indicated by the arrow 22 from the state shown in FIG. 3A and comes into the state shown in FIG. The portion 6 and the second support portion 7 can support the flexible portion 5 from the front and back surfaces thereof to position the movable blade 1 and can be engaged with the fixed blade 2 to bend the flexible portion 5. That is, the cutting edge 21 of the fixed blade 2 that serves as a contact portion between the fixed blade 2 and the movable blade 1 is the power point, the contact portion between the first support portion 6 and the flexible portion 5 is the fulcrum, and the second support portion 7. A contact portion between the movable portion 1 and the flexible portion 5 serves as a point of action, and the movable portion 1 can be brought into pressure contact with the fixed blade 2 when the flexible portion 5 is bent convexly in the direction of pressure contact with the fixed blade 2.

  In the sheet material cutting device according to the present invention, the movable blade can be positioned in the pressure contact direction of the fixed blade with the first support portion and the second support portion provided in the above-described flexible portion support member. More preferably, as shown schematically in FIG. 4, the movable blade support member is disposed on the surface side opposite to the surface side of the movable blade 1 that contacts the fixed blade 2, and engages with the second support portion 7. The third support portion 8 that supports the flexible portion 5 of the movable blade 1 is provided. Thereby, the dispersion | variation in the relative position of the movable blade 1 with respect to the fixed blade 2 can further be suppressed, and the movable blade 1 can be positioned more reliably.

In the present invention, the fixed blade 2 and the movable blade 1 can be crossed while being pressed by the means schematically shown in FIG. 5, for example. In FIG. 5, in order to clearly show the intersecting state of the fixed blade 2 and the movable blade 1, only the fixed blade edge line 2 a is shown for the fixed blade 2, and the bending and overhanging portions 32 and 33 of the movable blade 1 are shown. The convex part and the concave part of FIG.
FIG. 5A shows an example in which the movable blade 1 is engaged with the movable blade support member 3 by a screw 31 and bent to the side where the fixed blade 2 is disposed at the center in the cutting width direction of the movable blade 1. . Thus, when the movable blade 1 moves and contacts the fixed blade edge line 2a, the movable blade 1 is pressed against the fixed blade edge line 2a of the fixed blade 2 by the bending of the flexible portion 5 and intersects. It becomes.

  FIG. 5B shows that the movable blade support member 3 can slide on the fixed blade side in the cutting operation direction, for example, by bending the end portion of the movable blade support member 3 and contacting the blade side surface of the movable blade 1. In this case, the overhang portion 32 is provided along the cutting width direction. Then, a convex portion having a mountain shape with respect to the movable blade 1 is formed at the central portion in the cutting width direction of the overhang portion 32. Further, FIG. 5C is an example in which the movable blade support member 3 is provided with an overhang portion 33 as in FIG. 5B, and the movable blade 1 is located at the center of the overhang portion 33 in the cutting width direction. On the other hand, a recess having a valley shape is formed. Thus, when the movable blade 1 moves and contacts the fixed blade edge line 2a, the movable blade 1 is pressed against the fixed blade edge line 2a of the fixed blade 2 by the bending of the flexible portion 5, and the movable blade 1 1 protrudes to the fixed blade 2 side in the cutting width direction by the overhanging portion 32 or the overhanging portion 33 and intersects the fixed blade edge line 2a.

  The overhang portions 32 and 33 in this example can be provided at the position of the third support portion 8 shown in FIG. 4 on the fixed blade 2 side in the cutting operation direction of the movable blade support member 3. Thereby, the dispersion | variation in the relative position of the movable blade 1 with respect to the fixed blade 2 can be suppressed and positioned in the pressing direction of the fixed blade 2. That is, the overhang portions 32 and 33 in this example can be used also as the third support portion 8 shown in FIG.

  In the present invention, the movable blade 1 is provided with a blade edge guide portion 4 for guiding the blade edge of the movable blade 1 with respect to the fixed blade 2 in order to smoothly mesh the fixed blade 2 and the movable blade 1 during the cutting operation. Provided. Preferably, a bend is provided at the tip of the blade edge guide portion 4 on the side close to the fixed blade 2 in a direction away from the fixed blade 2. As a result, the cutting edge guide 4 provided on the movable blade 1 is first brought into contact with and meshed with the fixed blade 2 during the cutting operation, and the cutting edge of the movable blade 1 is guided without colliding with the fixed blade 2 and fixed. Smooth engagement between the blade 2 and the movable blade 1 can be obtained. And the blade edge | tip guide part 4 is a side near the fixed blade 2 in the cutting | disconnection operation direction of the movable blade 1, Comprising: It is preferable to shape | mold on the both sides of a cutting | disconnection width direction. Thereby, it can be made to contact | abut reliably with respect to the fixed blade 2 initially at the time of cutting | disconnection operation | movement, and it may become an obstacle of a contact with a sheet | seat material (not shown) which passes the center of a cutting width direction, and conveyance. Disappear.

  As described above, the sheet material cutting device according to the present invention can be formed by bending a fixed blade, a movable blade, or a frame into a special dimensional shape without using a special biasing member such as a conventional plate spring or coil spring. In addition, the solid blade and the movable blade can be brought into pressure contact with each other. This eliminates variations in the elastic characteristics of conventional urging members and variations in pressure contact force due to variations such as bending of the fixed blade, movable blade or frame, and stabilizes the fixed blade and movable blade from the start to the end of cutting. It is possible to press contact and suppress variations in press contact force.

  In the present invention, the fixed blade and the movable blade may be any cutting blade that can slide and cut the sheet material while being in cross-contact with each other. Preferably, the fixed blade is a cutting blade having a linear blade edge that extends along the cutting width direction. Further, the movable blade is preferably a cutting blade made of a thin plate-like material, whereby even if the flexible portion is formed with the same thickness as the movable blade, it is easily formed while ensuring suitable elasticity of the flexible portion. can do.

  The cutting edge line of the movable blade may be a straight line or a curved line. The cutting edge of the movable blade is preferably a single-edged so-called guillotine blade having a cutting edge line gradually inclined from one side in the cutting width direction, or a cutting edge line gradually inclined from both sides in the cutting width direction and having a central portion recessed in a V shape. It has a V-shaped blade. Thereby, the shear angle from the start to the end of cutting can be made constant, and the cutting load can be reduced. More preferably, it is a V-shaped blade. In the case of a V-shaped blade, there are two cutting points, and each cutting point is a symmetrical position in the cutting width direction. Therefore, the pressure contact force generated by the flexible portions provided on both sides in the cutting width direction of the movable blade is applied to each cutting point. Can be transmitted evenly. Thereby, the press contact of the movable blade with respect to the fixed blade is further stabilized, and the variation in the press contact force can be further reduced.

FIG. 1 shows a configuration diagram of an embodiment capable of full-width cutting (full cut) with respect to the sheet material cutting device according to the present invention.
In FIG. 1, the movable blade 1 whose blade edge is recessed in a V-shape is cut at both ends in the cutting width direction at the tip of the cutting edge closer to the fixed blade in the cutting operation direction, and the tip is separated from the fixed blade 2. The blade edge guide part 4 provided with a bend on the side to be provided was provided. A flexible portion 5 is provided on the rear end side of the movable blade 1 in the cutting operation direction. And this flexible part 5 was supported by the flexible part support member 10 which comprises the 1st support part 6 and the 2nd support part 7 which were provided in the movable blade support member 3 used also as a flame | frame. Specifically, the first support portion 6 supports the flexible portion 5 from the side of the movable blade 1 in contact with the fixed blade 2, and the second support portion 7 is interposed between the first support portion 6 and the fixed blade 2. It arrange | positioned and the flexible part 5 was supported from the surface side opposite to the 1st support part 6. FIG. The contact portions of the first support portion 6 and the second support portion 7 that support the flexible portion 5 may be flat or cylindrical. Moreover, a spherical surface may be used as long as the bending of the flexible portion 5 can be supported. In the present embodiment, the movable blade support member 3 has a plate-like flat surface that can be easily formed by bending it into a folding claw type.

  Guide holes 44a and 44b are provided in the central portion in the cutting width direction, guide pins 45 fixed to the movable blade support member 3 are communicated with the guide holes 44a, and the movable blade support member is provided with the guide holes 44b. The screw 31 engaged with the No. 3 is communicated to guide the movable blade 1 so that it does not swing in the cutting width direction when the movable blade 1 moves in the cutting operation direction. At the same time, the movable blade 1 is bent to the side where the fixed blade 2 is disposed by the screw 31 and disposed so that the fixed blade 2 and the movable blade 1 intersect.

  Further, the movable blade 1 is provided with a communication hole 43 for communicating with a drive pin 42 fixed to a wheel (not shown). This wheel was connected to a motor 41 disposed on the movable blade support member 3 through a gear (not shown). In this configuration, when the motor 41 is rotated in one direction, the drive pin 42 is rotated in one direction, and the rotated drive pin 42 presses the outer peripheral edge of the connection hole 43 provided in the movable blade 1 to move the movable blade 1 in the cutting direction. Move. When the motor 41 is rotated in the opposite direction, the drive pin 42 is also rotated in the opposite direction, thereby moving the movable blade 1 away from the fixed blade 2.

  The cutting operation was confirmed using the sheet material cutting device having the above-described configuration. First, the motor 41 was rotated to move the movable blade 1 toward the cutting operation direction, that is, toward the fixed blade 2. At this time, the blade edge guide 4 provided on the movable blade 1 was first brought into contact with the fixed blade 2, and the movable blade 1 was able to slide smoothly with the fixed blade 2 without causing any impulse. When the movable blade 1 is further moved, the flexible portion 5 provided on the movable blade 1 is bent convexly in the pressure contact direction of the fixed blade 2 while being supported by the first support portion 6 and the second support portion 7. It was confirmed. Furthermore, it was confirmed that the movable blade 1 bent so as to intersect the fixed blade 2 slidably pressed against the fixed blade 2. In addition, the operation of moving the movable blade 1 away from the state where the fixed blade 2 and the movable blade 1 are engaged with each other was also confirmed, and it was confirmed that the operation was performed without any problems.

  After that, cutting of the sheet material (not shown) is carried out, and from both sides in the cutting width direction of the cutting edge line recessed in the V-shape of the movable blade 1 that is slid and meshed with the fixed blade 2 while being in cross pressure contact. It was confirmed that the sheet material was cut stably and smoothly toward the center. Moreover, even if it cut repeatedly with this sheet | seat material cutting device, it confirmed that there were no malfunctions which a wrinkle, a chip, etc. produced in the movable blade 1 and the fixed blade 2, and the cutting life was impaired.

The sheet material cutting device according to the present invention includes a switching mechanism that forms a notch in the cutting edge line of the movable blade that is recessed in a V-shape and can switch the stroke in the cutting operation direction of the movable blade between a full stroke and a shortened stroke. FIG. 6 shows a configuration diagram of an embodiment in which full width cutting (full cut) can be selected for a full stroke and partial cutting (partial cut) can be selected for a shortened stroke.
In FIG. 6, the movable blade 1 is formed with a notch 46 at the apex of the cutting edge line that is recessed in a V shape, and a cam mechanism that can switch the moving stroke of the movable blade 1 during cutting between a predetermined stroke and a shortened stroke. Equipped. The movable blade 1 is provided with a connection hole 43 having at least a width of the rotation locus of the outer diameter of the drive pin 42 in the cutting width direction. Further, a slide member 51 having a contact portion 53 that can move in the cutting width direction of the connecting hole 43 of the movable blade 1 and that can come into contact with the movable blade 1 is provided. The slide member 51 has a rotation of the outer diameter of the drive pin 42. A slide member connecting hole 52 having a width smaller than the locus in the cutting width direction is provided. The connection hole 43 of the movable blade 1 and the slide member connection hole 52 of the slide member 51 are communicated with the drive pin 42. Further, the movable blade 1 is provided with a deformed hole 54 that can come into contact with the contact portion 53 of the slide member 51, and an escape portion 54 a is formed in one of the cut width directions of the deformed hole 54 in the cutting direction.

  With the cam mechanism configured as described above, the contact portion 53 of the slide member 51 enters the escape portion 54a by one rotation of the wheel (not shown), and the stroke of the movable blade 1 is shortened. The contact part 53 of the slide member 51 is detached from the escape part 54a, and the movable blade 1 can obtain a predetermined stroke, and can switch between full width cutting (full cut) and partial cutting (partial cut). It was.

  Also in the present embodiment, the pressing means and the intersecting means between the fixed blade 2 and the movable blade 1 are configured in the same manner as in the first embodiment. Then, when the cutting operation was confirmed in the same manner as in Example 1, the movable blade 1 smoothly contacted the fixed blade 2 without causing any impulse with respect to the fixed blade 2, and the flexible portion provided on the movable blade 1 5 was confirmed to bend convexly in the pressure contact direction of the fixed blade 2 while being supported by the first support portion 6 and the second support portion 7. Furthermore, it was confirmed that the movable blade 1 bent so as to intersect the fixed blade 2 slidably pressed against the fixed blade 2. Thereafter, full width cutting (full cut) and partial cutting (partial cut) of the sheet material (not shown) are performed, and the movable blade 1 slides while being in cross pressure contact with the fixed blade 2 to thereby remove the sheet material. It was confirmed that cutting was stable and smooth. Moreover, even if it cut repeatedly with this sheet | seat material cutting device, it confirmed that there were no malfunctions which a wrinkle, a chip, etc. produced in the movable blade 1 and the fixed blade 2, and the cutting life was impaired.

About the sheet material cutting device in the present invention, the movable blade is separated from the fixed blade, and is fixed so that the sheet material can be cut while being driven in the cutting operation direction while being in cross pressure contact with the fixed blade during the cutting operation. The block diagram of the Example which has arrange | positioned the blade and the movable blade so that a united separation is possible is shown in FIG.
In FIG. 7, the movable blade unit 61 having the movable blade 1 and the fixed blade unit 62 having the fixed blade 2 are arranged so as to be separable. Thereby, when not cut, the movable blade unit 61 can be separated from the fixed blade unit 62, and at this time, the fixed blade unit 62 can be attached and detached in the direction indicated by the arrow 63. Also in this embodiment, the pressure contact means and the intersecting means between the fixed blade 2 and the movable blade 1 are configured in the same way as in the first embodiment. Then, when the cutting operation was confirmed in the same manner as in Example 1, the movable blade 1 abuts against the fixed blade 2 from the blade guide part 4 at the combined position of the movable blade unit 61 and the fixed blade unit 62 and intersects. The sheet material (not shown) could be cut by sliding while being pressed.

It is a block diagram of one Example of the sheet | seat material cutting device in this invention. It is a schematic diagram of the Example of the flexible part of the movable blade in this invention. It is a schematic diagram which concerns on support of the flexible part of the movable blade in this invention. It is a schematic diagram which concerns on support of the flexible part of the movable blade in this invention. It is a schematic diagram which concerns on the crossing means of the movable blade with respect to the fixed blade in this invention. It is a block diagram of one Example of the sheet | seat material cutting device in this invention. It is a block diagram of one Example of the sheet | seat material cutting device in this invention.

Explanation of symbols

  1. Movable blade, 2. Fixed blade, 2a. 2. Fixed blade edge line; 3. movable blade support member; Cutting edge guide 5, 5, 5a, 5b, 5c, 5d. 5. flexible part; 6. first support part; Second support part, 8. Third support part, 10. Flexible part supporting members, 11a, 11b, 11c. Notch, 11d. Hole, 21. Cutting edge, 22. Arrow, 31. Screws, 41. Motor, 42. Drive pin, 43. Connecting holes 44a, 44b. Guide holes, 45. Guide pins, 51. Slide member, 52. Slide member connecting hole, 53. Contact portion, 54. Irregularly shaped holes, 54a. Relief part, 61. Movable blade unit, 62. Fixed blade unit, 63. Arrow

Claims (6)

  A sheet material cutting apparatus comprising: a fixed blade; a movable blade that slides while being in cross pressure contact with the fixed blade; and a movable blade support member that supports the movable blade; Has a blade edge guide portion for guiding the blade edge of the movable blade with respect to the fixed blade, and a flexible portion provided on both sides in the cutting width direction of the movable blade and on the rear end side in the cutting operation direction. The support member includes a flexible portion support member that supports the flexible portion, and the flexible portion support member includes a first support portion disposed on a surface side that contacts the fixed blade of the movable blade, and the other surface side. And arranged to be a first support portion, a second support portion, and a fixed blade toward the cutting operation direction, and bending of the flexible portion during the cutting operation, The sheet | seat material cutting device characterized by supporting from the front and back of this flexible part.   The movable blade support member is disposed on a surface side opposite to the surface side of the movable blade that contacts the fixed blade, and has a third support portion that engages with the second support portion and supports the flexible portion of the movable blade. The sheet material cutting device according to claim 1, wherein the sheet material cutting device is provided.   The sheet material cutting device according to claim 1, wherein the movable blade has a V-shaped cutting edge line formed therein.   The sheet material cutting device according to claim 3, wherein the blade edge guide portions of the movable blade are formed on both sides in the cutting width direction on the side close to the fixed blade in the cutting operation direction of the movable blade.   A cutting edge is formed in the cutting edge of the movable blade that is recessed in a V-shape, and a switching mechanism that can switch a stroke in the cutting operation direction of the movable blade between a full stroke and a shortened stroke is provided. 5. The sheet material cutting device according to claim 3, wherein full width cutting of the sheet material can be selected, and partial cutting of the sheet material can be selected in the shortening stroke.   6. The movable blade is separated from the fixed blade, and is driven in a cutting operation direction during a cutting operation to slide while being in cross pressure contact with the fixed blade to cut the sheet material. The sheet | seat material cutting device in any one of.

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