JP4854036B2 - Sheet material cutting device - Google Patents

Description

  The present invention is installed in office equipment such as copiers and printers, image forming apparatuses, composite devices and ticket machines, and various sheet materials such as sheet-like or roll-like paper and films, seals, and labels are used. The present invention relates to a sheet material cutting device used for cutting to an arbitrary length.

The sheet material cutting apparatus mounted on the above-described copying machine, printer, etc. includes full width cutting, which is also called full cut, which completely cuts the sheet material, and partial cutting, which is also called partial cut, in which a part of the sheet material is left uncut. Are appropriately selected with a single cutting device.
As such a cutting device, for example, there is one that uses a movable blade disclosed in Patent Document 1 in which a notch is formed at the top of a V-shaped cutting edge line. The cutting device has a movable blade drive mechanism that mechanically switches a moving distance of the movable blade in the cutting direction, and the movable blade is configured so that the notch completely passes through the sheet material to be cut when cutting the full width. The moving distance of the movable blade is shortened so that the cutout does not completely pass through the sheet material to be cut during partial cutting.

  Further, for example, the cutting device disclosed in Patent Document 2 has a pair of movable blades that are pivotally supported at both ends in the cutting width direction, and connects the pair of movable blades by a link at a central portion in the cutting width direction. Thus, the gap formed between the pair of movable blades can be adjusted. By adjusting the gap, full width cutting and partial cutting can be performed.

JP-A-2005-324301 JP-A-5-104484

  In recent years, it has been desired to improve the cutting quality of the sheet material for the sheet material cutting apparatus capable of performing the partial cutting and the full width cutting described above with one machine. Specifically, the cutting edge of the sheet material after the full width cutting is uneven or fluffy. It has become desirable to have a smooth straight line without any gaps. However, in the case of the cutting device disclosed in Patent Document 1, since the cutting edge line of the movable blade has a notch even in the case of full-width cutting, when the sheet material is cut by the notch portion, the cutting edge of the sheet material is used. Notches such as fuzz and shreds are generated. From this, it was considered that the above-described problem cannot be solved by a cutting device having a notch in the cutting edge line of the movable blade.

  Further, in the case of the cutting device disclosed in Patent Document 2, if it can be adjusted so as to eliminate the gap between the movable blades during full width cutting, the cutting edge of the sheet material after cutting can be made into a smooth linear shape. Conceivable. However, from the disclosure of Patent Document 2, it is not possible to understand a technology or a specific configuration that allows partial cutting and full width cutting to be performed with one cutting device, and partial cutting and full width with one cutting device. It was not clear how to achieve the goal of selecting and performing the cut.

  In view of the above problems, the present invention provides a sheet material cutting apparatus that can select partial cutting and full width cutting of a sheet material with a single machine. An object of the present invention is to provide a sheet material cutting device that improves the above.

  The present inventor studied the problem of generating a notch on the cutting edge of a sheet material that was cut in full width in a sheet material cutting apparatus that can select partial cutting and full width cutting of a sheet material by one unit, and moving the movable blade as a fixed cutting blade The present invention finds that it is possible to perform partial cutting and full width cutting of a sheet material with a single cutting device by forming a movable cutting blade and contacting and moving the movable cutting blade with respect to the fixed cutting blade. I came up with it.

That is, this invention is a sheet | seat material cutting device which comprises the movable blade which has a cutting edge line dented in the V shape toward the center of a cutting width direction, Comprising: The said movable blade is the one side which the said cutting edge line inclines. The movable cutting blade is divided into a fixed cutting blade to be formed and a movable cutting blade that forms the other side of the cutting edge line, and the movable cutting blade is moved by a movable cutting blade drive mechanism that reciprocates in the cutting width direction. wherein the sheet material by locking the position of contacting against the fixed cutting blade and movable blade having a continuous edge line for full width cutting, locking in position that makes separating the movable cutting blade from the fixed cutting edge This is a sheet material cutting device that makes a movable blade having a notch in a cutting edge line for partially cutting the sheet material.

The present invention provides the fixed cutting blade fixed to the cutting blade holder, and the movable supported by the cutting blade holder and having a tip portion facing the fixed cutting blade in the cutting width direction and capable of reciprocating in the cutting width direction. wherein the movable blade, a rotor which rotate in the forward and reverse directions is connected to the driving device, a driving pin which is installed at a predetermined distance position from the axis of rotation of the rotor, the rotational movement of the drive pin to chromatic and cutting edge, the A sheet material cutting device having a movable blade driving mechanism for converting the movable blade into a reciprocating motion for cutting and returning , wherein the movable blade driving mechanism has a slide member capable of reciprocating in a cutting width direction by a rotational motion of the driving pin. The slide member is provided with a communication hole that communicates with the drive pin and has a width in the cutting width direction that is smaller than the width of the rotation track of the outer diameter of the drive pin, and an engagement portion provided in the movable cutting blade Movable cutting blade that can be locked And a fixed cutting blade locking portion capable of locking the engaging portion provided on the fixed cutting blade at two positions different in the cutting width direction, and the slide member is cut by the rotation of one of the rotors. The movable cutting edge moves to one side in the cutting width direction by moving in one direction to form a gap with the fixed cutting edge, and the slide member moves in the cutting width direction by the other rotation of the rotor. By moving to the other side, the movable cutting edge moves to the other side in the cutting width direction and can be a sheet material cutting device having a movable cutting edge drive mechanism that contacts the fixed cutting edge.

  In the sheet material cutting device of the present invention, the engaging portion of the fixed cutting blade and the movable cutting blade is a pin-shaped member, and the fixed cutting blade locking portion and the movable cutting blade locking portion are the pin-shaped member. It is preferable that it is a through-hole that can be locked.

  Further, the through hole of the fixed cutting blade locking portion has two concave portions that allow the pin-shaped member of the fixed cutting blade to enter at different positions in the cutting width direction of the end surface on the return side of the movable blade. It is preferable to have.

  Moreover, it is preferable that the communicating hole of the slide member has a width in the cutting width direction obtained by subtracting at least a predetermined width of the gap from the width of the rotation locus of the outer diameter of the drive pin.

  In addition, before the cutting of the sheet material, it is preferable that the fixed cutting blade and the movable cutting blade have a maximum separation distance from the cutting blade holder at the tip portions facing each other.

  The sheet material cutting device of the present invention includes a fixed blade having a linear cutting edge line, the fixed blade and the cutting edge line of the movable blade are crossed and pressed, and the movable blade is slid to slide the sheet material. It can be set as the structure cut | disconnected.

  The sheet material cutting device of the present invention is a cutting device in which partial cutting and full width cutting of a sheet material can be selected by one unit, and the cutting edge line of the movable blade is formed in a V shape at the time of full width cutting. The cutting edge of the full-width cut sheet material can be made into a smooth linear shape, and the cutting quality is improved. Therefore, for example, a copier, a printer, an image forming apparatus, and a composite device of these equipped with a sheet material cutting device can greatly contribute to improving the reliability.

  An important feature of the present invention is that the movable blade that cuts the sheet material has a fixed cutting blade that forms one inclined side of the cutting edge line that is recessed in a V shape toward the center in the cutting width direction, and the cutting edge line The movable cutting edge drive mechanism is configured to be configured with a movable cutting edge that forms the other side inclined, and the movable cutting edge can be locked at different positions in contact and separation with respect to the fixed cutting edge. It is in. For example, in the embodiment of the present invention, the fixed cutting blade is fixed to a cutting blade holder, and the movable cutting blade is supported by the cutting blade holder so as to be reciprocally movable in a cutting width direction, thereby the fixed cutting blade. The movable cutting blade can be brought into contact with and separated from the other.

  As described above, the cutting edge line of the movable blade is formed by the contact or separation between the fixed cutting edge and the movable cutting edge. Then, by moving the movable cutting edge facing the fixed cutting edge in the cutting width direction to one side in the cutting width direction, the distal ends of the fixed cutting edge and the movable cutting edge can be separated to form a gap. Thereby, the cutting edge line of the movable blade becomes a cutting edge line having a notch, and the cutting edge line enables partial cutting of the sheet material. Further, by moving the movable cutting edge to the other side in the cutting width direction, the tip ends of the fixed cutting edge and the movable cutting edge can be brought into close contact with each other. Thereby, the cutting edges of the fixed cutting blade and the movable cutting blade are connected to each other, and the cutting edge line of the movable cutting blade is inclined toward the center in the cutting width direction and becomes a V-shaped cutting edge line in which the central portion is depressed, By cutting the full width of the sheet material with the cutting edge line, the cutting edge of the sheet material can be formed into a smooth linear shape.

  In the sheet material cutting device of the present invention, the above-mentioned fixed cutting blade and the movable cutting blade are in contact with and separated from each other, that is, a gap is formed between the tip portions of each other, or the tip portions of each other are in contact with each other. The movable cutting edge driving mechanism involved in making it important is important. For example, in the embodiment of the present invention, the movable blade drive mechanism that drives the movable blade is provided with a slide member that can reciprocate in the cutting width direction by the rotational motion of the drive pin, and the slide member simultaneously rotates the drive pin. Is configured to have a function of converting the reciprocating motion into and out of the movable blade. Specifically, the slide member is connected to the drive pin, the communication hole having a width smaller than the width of the rotation track of the outer diameter of the drive pin in the cutting width direction, and the movable cutting blade. A movable cutting edge locking portion capable of locking the joint portion and a fixed cutting edge locking portion capable of locking the engaging portion provided on the fixed cutting blade at two different positions in the cutting width direction.

  With the above-described configuration, the slide member provided in the movable blade drive mechanism that drives the movable blade is moved in the cutting direction by the rotational movement of the drive pin communicated with the communication hole, and at the same time, the movable blade is cut into the cutting width. It can have an important function of a movable cutting edge driving mechanism movable in the direction. Then, by setting the communicating hole of the slide member to a width smaller than the width of the rotation track of the outer diameter of the drive pin, the end of the rotation track formed by the outer diameter of the drive pin is moved in the forward and reverse rotation directions. Depending on the difference, the slide member can be moved to one or the other in the cutting width direction.

  In the embodiment of the sheet material cutting device of the present invention, partial cutting and full width cutting can be selected with one cutting device by the mechanical configuration related to the movable blade and the slide member. That is, when the one rotation of the rotor moves the slide member to one of the cutting width directions, the movable cutting blade moves to one of the cutting width directions to form a gap with the fixed cutting blade, By forming the gap, the cutting edge line of the movable blade has a notch, and the sheet material can be partially cut leaving the width of the gap. Further, when the other rotation of the rotor causes the slide member to move to the other in the cutting width direction, the movable cutting blade moves to the other in the cutting width direction and contacts the fixed cutting blade. When the sheet material is cut in full width, the cutting edge can be formed into a smooth straight line.

Hereinafter, embodiments of the sheet material cutting device of the present invention will be specifically described and described in detail.
The basic configuration of the sheet material cutting device according to the embodiment of the present invention includes a movable blade that cuts a sheet material, a rotor that is connected to a driving device and that rotates in both forward and reverse directions, and a predetermined interval from the rotation axis of the rotor. This is a sheet material cutting device having a drive pin and a movable blade drive mechanism that converts the rotational motion of the drive pin into the reciprocating motion of cutting and returning of the movable blade. In other words, using the drive pin installed at a predetermined interval from the rotation axis of the rotor as a driving force, the movable blade is driven in the cutting direction to cut the sheet material, and the movable blade is driven in the return direction from the sheet material. They are separated. Further, when the movable blade is in the return state, it is in a state of waiting to insert the sheet material into the sheet material cutting device.

  The movable blade drive mechanism is a communication that rotates a drive pin by rotating a rotor (rotor) such as a wheel or gear connected to a drive device in both forward and reverse directions, and communicates the rotational movement of the drive pin with the drive pin. The function of transmitting to the slide member through the hole and reciprocating the slide member in a direction corresponding to the cutting and returning of the movable blade, thereby causing the movable blade locked to the slide member to reciprocate for cutting and returning. It is what has. In contrast to such a movable blade drive mechanism, in the present invention, as described above, a configuration of a movable blade drive mechanism that allows the slide member to reciprocate also in the cutting width direction by the rotational movement of the drive pin is added. .

  In addition, the movable blade drive mechanism is an entire movable blade that moves the slide member in a direction corresponding to the cutting or returning of the movable blade due to the difference between the forward and reverse rotations of the rotor, that is, the difference between the forward and reverse rotations of the drive pin. At the same time, it becomes a movable cutting edge drive mechanism capable of moving the slide member to one or the other in the cutting width direction. Then, when the slide member moves to one or the other in the cutting width direction, the engaging portion of the fixed cutting blade is locked at one or the other of the two different positions of the fixed cutting blade locking portion provided on the slide member. The position of the slide member in the cutting width direction with respect to the fixed cutting edge can be switched to two different positions. Thereby, the movable cutting edge with which the engaging part was latched by the movable cutting edge latching part provided in the slide member can be switched to two different positions in the cutting width direction.

  In the present invention, the drive pin itself installed at a predetermined distance from the rotation axis of the rotor has a constant circular motion even if the rotation direction changes. Therefore, regardless of the forward and reverse rotational directions, the rotational trajectory formed by the outer diameter of the drive pin by a constant circular motion of the drive pin is movable through the slide member at the positions of both ends of the rotational trajectory in the cutting width direction. The positions of both ends in the cutting width direction of the blade, that is, the contact position and the separation position of the movable cutting blade with respect to the fixed cutting blade can be determined.

Further, in the rotation locus formed by the outer diameter of the drive pin, the both end positions of the cutting and returning of the movable blade can be determined by the both end positions of the rotation locus in the direction corresponding to the cutting and returning of the movable blade. As a result, the amount of movement at the time of cutting and returning of the movable blade can be the same amount of movement during partial cutting or full width cutting, and is determined by the width of the rotation locus formed by the outer diameter of the drive pin. Can do.
That is, the sheet material cutting device of the present invention has a completely new configuration that enables partial cutting and full width cutting of a sheet material without changing the moving distance of the movable blade in the cutting direction as in the prior art.

  Therefore, in the sheet material cutting device of the present invention, in the specific rotation direction of the drive pin, the slide member moves in the cutting or return direction of the movable blade, and at the same time, the slide member moves in the specific direction of the cutting width direction, Thereby, the movable cutting blade moves in a specific direction in the cutting width direction, and is a cutting device having a movable cutting blade drive mechanism that can position the movable cutting blade in a specific position in the cutting width direction. At the same time, the movable cutting blade can be switched between a fixed cutting edge facing in the cutting width direction and a separation position for forming a gap at the front end of the movable cutting edge and a contact position where the front end contacts each other. A cutting device having a drive mechanism. Further, the distance between the separation position and the contact position of the movable cutting blade can be set equal to the width of the gap formed between the fixed cutting blade and the movable cutting blade.

  In the movable cutting blade drive mechanism, the movable cutting blade described above is moved in the cutting width direction or in the cutting width direction by the movable cutting edge engaging portion of the slide member engaging the engaging portion of the movable cutting blade. The reciprocal movement of the is ensured. Similarly, in the above-described fixed cutting blade, the fixed cutting blade locking portion of the slide member locks the engaging portion of the fixed cutting blade, so that the movement to cutting and return is ensured.

  Further, when the movable blade is cut and returned, a fixed blade and a movable blade are provided by fixing the fixed blade and supporting the movable blade by driving the blade holder itself. Can be driven simultaneously, eliminating the need to individually drive the fixed cutting blade and the movable cutting blade. Further, by guiding the cutting blade holder itself, both the fixed cutting blade and the movable cutting blade can be stably guided. Therefore, in configuring the movable blade, the movable blade driving mechanism can be simply configured by providing the cutting blade holder.

Hereinafter, a preferable configuration in the present invention will be described.
As an engagement part provided in the fixed cutting blade and movable cutting blade which comprise the movable blade mentioned above, the convex-shaped member which has convex-shaped parts, such as a column-shaped or prismatic pin, a roller, can be provided, for example. In addition, as the fixed cutting edge locking portion and the movable cutting edge locking portion provided on the slide member, for example, a concave portion capable of locking the convex member such as a through hole, a bottomed recess or groove, or a guide rail is used. A concave member can be provided. Conversely, the engaging portion of the fixed cutting blade or the movable cutting blade may be a concave member, and the fixed cutting blade locking portion or the movable cutting blade locking portion of the slide member may be a convex member. Preferably, the engaging portion of the fixed cutting blade and the movable cutting blade is formed by a pin-shaped member, and the fixed cutting blade locking portion and the movable cutting blade locking portion are formed by a through-hole capable of locking the pin-shaped member. That is. Thereby, each member can be made into a simple structure and can be manufactured by a simple means such as caulking or punching.

  When the engaging part of the fixed cutting edge is formed by the pin-shaped member and the fixed cutting edge locking part is formed by the through hole, the through hole of the fixed cutting edge locking part is on the return side of the movable blade. It is preferable to have two recessed portions that allow the pin-shaped member of the fixed cutting blade to enter at different positions in the cutting width direction of the end face. Thereby, it can be made a simple structure and can be manufactured by a simple means such as punching or drilling.

  As described above, by setting the communication hole of the slide member to a width smaller than the width of the rotation locus of the outer diameter of the drive pin, the width of the communication hole becomes narrower than the width of the rotation locus of the drive pin. The slide member can be moved to one or the other in the cutting width direction. Preferably, the communication hole of the slide member has a width in the cutting width direction obtained by subtracting at least a predetermined width of the gap from the width of the rotation locus of the outer diameter of the drive pin. As a result, the amount of movement of the slide member in the cutting width direction becomes equal to or greater than the predetermined width of the gap, and the gap formed between the fixed cutting blade and the movable cutting blade can be obtained with at least the predetermined width. In addition, when the gap exceeds a predetermined width, the excess can be added to the movement amount of the slide member in the cutting width direction. As a result, the interval between two different positions provided on the fixed cutting blade locking portion can be set wider by the excess, and the excess becomes a margin for movement of the slide member in the cutting width direction. The design of the locking part can be facilitated.

  In addition, when the movable blade meshes with the mating blade and cuts the sheet material from both sides in the width direction, the crossing angle of the movable blade meshing with the mating blade is too small near the center of the cutting width direction which is the final stage of cutting, There may be inconveniences in cutting the sheet material. Therefore, in the movable blade, it is preferable that the distance between the fixed cutting blade and the movable cutting blade from the cutting blade holder is maximized before the cutting of the sheet material starts. As the setting means for the separation distance, the distal end portions of the fixed cutting blade and the movable cutting blade may be bent in the direction away from the cutting blade holder, that is, may be bent in the pressure contact direction with respect to the counterpart blade. The bending may be given in advance by bending or the like, or by providing a protruding member such as a dowel or a spring on the cutting blade holder, the flexibility of the fixed cutting blade and the movable cutting blade is increased. You may bend and utilize. Moreover, you may bend so that it may incline in the side spaced apart from a cutting blade holder by bending etc., without bending a fixed cutting blade and a movable cutting blade. By maximizing the separation distance from the cutting blade holder at the tip of the fixed cutting blade and the movable cutting blade by the means as described above, the crossing angle of the movable blade that meshes with the mating blade at the center in the cutting width direction, that is, A sufficient crossing angle between the stationary cutting blade and the movable cutting blade can be secured.

  The tip portion of the fixed cutting blade and the movable cutting blade that are in contact with each other can be shaped as shown in FIG. 5 as an example. The shape shown in FIG. 5A and FIG. 5B is a configuration in which the tip portions are brought into contact with each other at one end surface, and the tip portions can be stably brought into contact with each other. The shape shown in FIG. 5C is a configuration in which a step is provided at the tip of each other, and displacement of the cutting and return directions of the movable blade can be prevented. The shape shown in FIG. 5 (d) is a configuration in which the tips of each other are substantially point-contacted, and without having discontinuous portions on the cutting edge line formed by the cutting edge of the fixed cutting edge and the cutting edge of the movable cutting edge. A smooth cutting edge line can be obtained.

  The sheet material cutting device of the present invention described above includes a fixed blade having a linear cutting edge line, and the fixed blade and the cutting edge line of the movable blade are crossed and pressed, that is, the fixed cutting blade and the movable cutting blade. It is possible to make a cutting device that cuts the sheet material by crossing the cutting edge lines and bringing them into pressure contact with each other and sliding the movable blade.

  In addition, the sheet material cutting device of the present invention can be a cutting device having an arrangement similar to the arrangement shown in FIG. That is, a movable blade unit that supports a drive unit including the movable blade, the rotor, and the slide member with a frame, and a fixed blade unit that supports the fixed blade are arranged so as to be separable and separated at a combined position. The fixed blade and the movable blade can be crossed and brought into pressure contact with each other, and the movable blade can be slid to cut the sheet material.

  In the present invention, each member constituting the cutting device is preferably formed of a metal material, for example, a fixed cutting blade or a blade member of a movable cutting blade. In addition, for example, a rotor, a drive pin, a cutting blade holder, a slide member, a case for holding a drive device connected to the rotor, and a member such as a frame or a cover for housing these members on the inside, as necessary It can be a resin molded product.

Hereinafter, the sheet material cutting device of the present invention will be described in detail by way of specific examples.
FIG. 1 is an example showing an embodiment of the present invention, and shows an exploded perspective view showing the positional relationship of each component. FIG. 2 shows the process of cutting the full width of the sheet material from the front. 2A shows a state in which the movable blade is in the uppermost position in the return direction and is waiting to insert a sheet material into the sheet material cutting device, and FIG. 2B shows a state in which the movable cutting blade is a fixed cutting blade. FIG. 2 (c) shows a state in which the movable blade is at the lowest position after cutting the full width of the sheet material. FIG. 3 shows the process of partially cutting the sheet material from the front. 3A shows a state in which the movable blade is in the uppermost position in the return direction and is waiting to insert a sheet material into the sheet material cutting device, and FIG. 3B shows a state in which the movable cutting blade is a fixed cutting blade. FIG. 3C shows a state in which the movable blade is at the lowest position after partially cutting the sheet material. FIG. 4 shows a part of the fixed cutting blade engaging portion provided on the slide member partially from the front, and FIGS. 4A to 4C show the engagement portion provided on the fixed cutting blade. An example of the operation | movement in a fixed cutting blade latching | locking part is shown. In FIGS. 2 and 3, in order to clarify the operation of the pin 2c, the description of the retaining ring 8c provided at the tip of the pin 2c is omitted.

  In this example, the width left uncut when the sheet material was partially cut was set to 1.5 mm. The movable blade for cutting the sheet material has a fixed cutting blade 1 having a cutting edge 1a inclined toward the center in the cutting width direction fixed to a cutting blade holder 4 and has a cutting edge 2a similar to the fixed cutting blade 1. 2 was supported by the cutting blade holder 4, and the tip portions of the two were opposed to each other in the cutting width direction. In the cutting width direction, the width of the gap 20 formed between the fixed cutting blade 1 and the movable cutting blade 2 was set to 1.5 mm, which is the same as the width of the sheet material left uncut at the time of partial cutting. The width of the gap 20 corresponds to the moving distance of the movable cutting edge 2.

  Two pins 1b and 1c having a diameter of 3 mm were fixed to the fixed cutting edge 1 by caulking at intervals of 21 mm. The one pin 1b is formed by punching the cutting blade holder 4 with a shim 6a and a plurality of dowels 4f so that the fixed cutting blade 1 is separated from the surface of the cutting blade holder 4 by 0.3 mm. In communication with the hole 4b, the tip of the pin 1b was prevented from coming off by a retaining ring 8a. The other pin 1c is an engaging portion that is locked by the slide member 5. After the pin 1c communicates with the hole 4c formed by punching the cutting blade holder 4, the fixed cutting blade 1 formed by punching the slide member 5 is further locked. It communicated with the through-hole 5b as a fixed cutting edge locking portion for the purpose. The reason why the fixed cutting blade 1 is configured to be separated from the surface of the cutting blade holder 4 is that the movable cutting blade 2 is similarly configured as described later, so that the positions of the fixed cutting blade 1 and the movable cutting blade 2 are aligned. Because.

  On the movable cutting edge 2, two pins 2b and 2c having a diameter of 3 mm were fixed by caulking at intervals of 22 mm. One pin 2b communicates with the long hole 4d formed by punching the cutting blade holder 4, and further communicates with the long hole 5c formed by punching the slide member 5, so that the pin 2b does not interfere with the slide member 5. . The other pin 2c is an engaging portion that is locked by the slide member 5. The shim 6b is inserted, and a plurality of dowels 4f are provided so that the movable cutting blade 2 is separated from the surface of the cutting blade holder 4 by 0.3 mm. In the through-hole 5d as a movable cutting blade locking portion for locking the movable cutting blade 2 punched and formed on the slide member 5 after communicating with the long hole 4e punched and formed on the cutting blade holder 4 The tip end portion of the pin 2c was prevented from coming off by a retaining ring 8c. By configuring the movable cutting edge 2 to be separated from the surface of the cutting edge holder 4, the sliding resistance when the movable cutting edge 2 moves in the cutting width direction can be reduced, and the movable cutting edge 2 moves smoothly. can do.

  The diameters of the holes 4b and 4c of the cutting blade holder 4 described above correspond to the outer diameters of the pins 1b and 1c of the fixed cutting blade 1, respectively, so that there is substantially no clearance. Thereby, the fixed cutting blade 1 can be fixed to the cutting blade holder 4. Further, the long holes 4d and 4e of the cutting blade holder 4 are respectively long in the long hole 5c and the through hole 5d of the slide member 5 so as not to interfere with the movement of the pins 2b and 2c of the movable cutting blade 2 in the cutting width direction. It was formed larger than the side and the short side. Thereby, the movable cutting blade 2 can be supported by the cutting blade holder 4, and the cutting blade holder 4 does not interfere with the pins 2 b and 2 c of the movable cutting blade 2 when the movable cutting blade 2 is moved in the cutting width direction.

  The above-described through-hole 5b of the slide member 5 forms a long side in the cutting width direction of the sheet material, and becomes the return direction of the movable blade in order to lock the pin 1c of the fixed cutting blade 1 at two different positions. Two concave portions 51a and 51b shown in FIG. 4 were formed on the side end face. The distance 51d between the tops of the two recesses 51a and 51b may be at least 1.5 mm which is the width of the gap 20. However, in order to allow the pin 1c of the fixed cutting blade 1 to enter the recess 51a or 51b of the through-hole 5b and to lock the pin 1c so that it does not come off without permission, it is between the two recesses 51a and 51b. A peak 51c was formed. In addition to the width of 1.5 mm of the gap 20, a margin of 1.5 mm is provided for the amount of movement of the slide member 5 to sufficiently secure the height of the peak 51 c, and the distance 51 d between the tops is formed to 3 mm. . Thus, the slide member 5 can reliably lock the pin 1c of the fixed cutting blade 1 having a diameter of 3 mm without dropping off the two recesses 51a and 51b provided in the through hole 5b.

  Further, the through hole 5d of the slide member 5 is formed with the cutting width direction of the sheet material as a long side, and the width is 4.5 mm. This is a value set in association with 3 mm of the distance between the tops of the two recesses 51 a and 51 b of the through-hole 5 b that locks the fixed cutting blade 1, and the diameter of the pin 2 c of the movable cutting blade 2 is 3 mm. A value obtained by adding the above-mentioned margin of 1.5 mm. Further, the short side corresponding to the cutting direction of the movable blade is substantially free of clearance with respect to the pin 2c of the movable cutting blade 2.

  Further, the long hole 5c of the slide member 5 can support the pin 2b on the end surface on the side that becomes the cutting direction of the sheet material when the movable cutting blade 2 moves in the cutting width direction, and in the cutting width direction of the pin 2b. In order not to interfere with the movement of, a long hole having a long side in the cutting width direction was formed. And the long side used as the width | variety of a cutting width direction was 5 mm, and the short side used as the width | variety of a cutting direction was 3.5 mm. Furthermore, in order not to interfere with the pin 2b that moves in the return direction, although slightly, the curvature of the end face on the center side in the cutting width direction is made small, that is, the hole diameter is made large.

  The sheet material cutting device shown in the present embodiment intersects the blade edge of the movable blade formed by the blade edges 1a and 2a of the fixed cutting blade 1 and the movable cutting blade 2 described above and the blade edge 3a of the fixed blade 3 serving as the counterpart blade. 1 to 3 so that the sheet material can be cut by sliding the movable blade. At this time, the fixed cutting blade 1 and the movable cutting blade 2 are previously bent by bending, and before the cutting of the sheet material is started, the cutting is performed at the tip portion where the fixed cutting blade 1 and the movable cutting blade 2 face each other in the cutting width direction. The separation distance was set to 0.9 mm so that the separation distance from the blade holder 4 was maximized. The separation distance is a value obtained by adding the bending amount of 0.6 mm and 0.3 mm given by the shims 6a and 6b described above. Further, the fixed blade 3 has a plurality of dowels (see FIG. 5) in the cutting width direction so that the blade edge 3a of the fixed blade 3 can easily come into contact with the fixed blade 1 and the blade edges 1a and 2a of the movable blade 2. (Not shown) and supported by the guide 10b, and tilted in the direction of pressure contact with the fixed cutting blade 1 and the movable cutting blade 2.

  The above-mentioned fixed cutting blade 1, movable cutting blade 2 and fixed blade 3 are all formed by stamping a stainless steel knife having a thickness of 0.72 mm with a press, and the cutting edge 3a of the fixed blade 3 is ground. gave. And the opening angle (opening degree) of the V-shaped depression of the cutting edge line formed by the cutting edges 1a, 2a of the fixed cutting edge 1 and the movable cutting edge 2 is set to 168 degrees, and these cutting edges 1a, 2a and the fixed cutting edge 3 The shear angle formed by the blade edge 3a is set to 6 degrees, the moving distance in the cutting and returning directions of the fixed cutting blade 1 and the movable cutting blade 2 that are movable blades when cutting the sheet material is set to 7.3 mm, Each member was manufactured.

The frame 10 for regulating and holding the movable blade and the fixed blade 3 was manufactured by bending using a cold rolled steel plate having a thickness of 0.8 mm. The fixed blade 3 was disposed on the lower side of the frame 10, and a guide 10b was provided and held so as not to fall off the frame 10. Then, a sheet passing port 10 a into which a sheet material is inserted is provided immediately above the blade edge 3 a of the fixed blade 3. Further, guides 10c are provided on both sides of the frame 10 in the cutting width direction to restrict and hold the position of the cutting blade holder 4 in the width direction, and a guide 10d is provided. The cutting blade holder 4 is provided together with the guide 10b in the sheet material insertion direction. Held. When the movable blade meshes with the fixed blade 3, the cutting blade holder 4, the fixed cutting blade 1, and the working cutting blade 2 can be moved between the guide 10 b and the fixed blade 3. In addition, a long hole 10e is provided at the center of the frame 10 in the cutting direction, and the cutting blade holder 4 is connected to the frame 10 by a connecting pin 9, a washer 9a, and a retaining ring 9b so that the cutting blade holder 4 can move in the cutting and returning directions. .

  The drive source for moving the movable blade that cuts the sheet material described above is a commercially available motor 14 (DC motor with a stop torque of 8.3 m-Nm), and a worm gear 14 a (resin molded product) is provided on the rotating shaft of the motor 14. ) And disposed on the frame 10 by the case 16, and the forward and reverse rotation directions of the motor 14 are detected by the sensor 15. The worm gear 14a is arranged so as to mesh with the worm wheel 11 (number of teeth 40), which is a resin molded product, which is a rotor, via the gear 13, and connected to the gear, so that the driving force of the motor 14 can be transmitted at a reduced speed. The worm wheel 11 is provided with a drive pin 12, the distance between the axis of the core of the drive pin 12 and the rotation axis of the worm wheel 11 is set to 4.5 mm, and the core of the drive pin 12 is made of resin with a worm wheel. 11 and molding. Then, after connecting the core portion of the drive pin 12 to the long hole 4 a provided in the cutting blade holder 4 and the connection hole 5 a provided in the slide member 5, the collar 7 a is fitted into the core portion of the drive pin 12 and removed. A cylindrical shape with a diameter of 4.5 mm was used, and the tip of the core was prevented from falling off by a retaining ring 8b in order to prevent the collar 7a from falling off.

  The slide member 5 is arranged such that the drive pin 12 communicated with the long hole 4a provided in the cutting blade holder 4 communicates with the communication hole 5a, and punched 0.8 mm thick stainless steel with a press. Produced. The width of the connecting hole 5a provided in the slide member 5 in the cutting width direction is the rotation of the outer diameter of the drive pin 12 which is the sum of the diameter of the rotation pitch circle of the drive pin 12 and the width of the outer diameter of the drive pin 12 of 4.5 mm. The width of the locus was set to 10.5 mm which was smaller than 13.5 mm. Further, the width of the connecting hole 5d in the cutting direction of the sheet material was set to 6 mm with a clearance of 1.5 mm with respect to the outer diameter of the driving pin 12 of 4.5 mm.

  Further, the long hole 4a provided in the cutting blade holder 4 sets the width in the cutting width direction of the sheet material to 16.5 mm, which is larger than the width in the cutting width direction of the connecting hole 5a of the slide member 5, and cuts the sheet material. The width in the direction was set to 6.2 mm, which is larger than the width in the cutting direction of the connecting hole 5a of the slide member 5. By setting the dimension of the long hole 4 a of the cutting blade holder 4 to be at least larger than the dimension of the connecting hole 5 a of the slide member 5, the drive pin 12 of the long hole 4 a of the cutting blade holder 4 can be used when the movable blade is cut and returned. Without touching the end face, it comes into contact only with the end face of the connecting hole 5 a of the slide member 5, whereby the rotational movement of the drive pin 12 can be converted into a substantially linear movement of the slide member 5.

Next, the operation of cutting the full width of the sheet material with the above-described sheet material cutting device will be described.
Between the cutting edges 1a and 2a of the fixed cutting blade 1 and the movable cutting edge 2 constituting the movable blade and the cutting edge 3a of the fixed blade 3 while waiting to insert the sheet material shown in FIG. Then, a sheet material (not shown) is inserted from the back side to the front side in the drawing. Thereafter, the motor 14 is energized by the energization command in the full width cutting mode, and the worm wheel 11 is rotated counterclockwise as indicated by the arrow 23 via the worm gear 14 a and the gear 13 by the driving force of the motor 14. Then, the drive pin 12 provided on the worm wheel 11 is rotated by the rotation of the worm wheel 11, and the drive pin 12 is pressed against the left end surface of the communication hole 5 a provided in the slide member 5 to cut the slide member 5 in the cutting width direction. Move 3mm to the left of

  In the process of moving the slide member 5 to the left side by 3 mm, that is, in the process of locking the movable cutting edge at the contact position with respect to the fixed cutting edge by the movable cutting edge driving mechanism, as shown in FIG. When the drive pin 12 is rotated 90 degrees to the left, the maximum is reached, and the slide member 5 moves 3 mm to the left as indicated by the arrow 24. In the movement of the slide member 5, only the slide member 5 first moves to the left by 1.5 mm, and the right end surface of the through hole 5 d which is a movable cutting blade locking portion provided on the slide member 5 is engaged with the movable cutting blade 2. It abuts on the pin 2c which is a joint. Thereafter, the slide member 5 further moves 1.5 mm to the left side, the right end surface of the through hole 5d of the slide member 5 engages the pin 2c of the movable cutting blade 2 and presses it to the left side, and the pin 2c of the movable cutting blade 2 is pushed. Move 1.5 mm to the left in the cutting width direction. By moving the pin 2c of the movable cutting edge 2 to the left in the cutting width direction by 1.5 mm, the movable cutting edge 2 is brought into contact with the fixed cutting edge 1 to eliminate the gap 20 and form the contact portion 20 ′. it can.

  Further, when the slide member 5 further moves 1.5 mm to the left side as described above, at the same time, the right end surface of the through hole 5b which is the fixed blade engaging portion of the slide member 5 is the engaging portion of the fixed cutting blade 1. It contacts the pin 1c. By the series of operations described above, the cutting edge line of the movable blade formed by the cutting edge 1a of the fixed cutting blade 1 and the cutting edge 2a of the movable cutting blade 2 is connected in a V shape. At this time, the pin 2b of the movable cutting blade 2 was supported by the end face of the long hole 5c of the slide member 5, but was not affected by the operation by the long hole 5c.

  Thereafter, when the drive pin 12 further rotates counterclockwise, the drive pin 12 rotates to the lowest point of the rotation locus as shown in FIG. 2C while pressing the lower end surface of the connecting hole 5a of the slide member 5 in the cutting direction. . The slide member 5 is moved to the lowest point in the cutting direction by the rotational movement of the drive pin 12, and the fixed cutting blade 1 and the movable cutting blade 2 locked to the slide member 5 are moved by the movement of the slide member 5. It is moved to the lowest point in the cutting direction together with the cutting blade holder 4. In the process in which the slide member 5 is moved to the lowest position in the cutting direction, as shown in FIG. 4C, the slide member 5 moves in the direction indicated by the arrow 24, and the pin 1c of the fixed cutting blade 1 is moved to the slide member. 5 enters the recessed portion 51b formed in the through hole 5a and is locked. Thereby, in the cutting width direction, the positional relationship of the slide member 5 with respect to the fixed cutting blade 1 and the movable cutting blade 2 locked to the slide member 5 is determined and fixed, and the cutting edge line of the movable blade is connected to the contact portion 20 ′. It could be formed as a cutting edge line connected in a V shape.

As described above, the fixed cutting edge 1 and the cutting edges 1a and 2a of the movable cutting edge 2 moved by the movable cutting edge drive mechanism, which is a mechanical mechanism that converts the rotational movement into a substantially linear movement, become the cutting edge of the movable cutting edge. The sheet material (not shown) is successively engaged with the blade edge 3a of the fixed blade 3 from both sides of the sheet material (not shown), and the sheet material (not shown) is cut from both sides toward the center. By this cutting operation, the cutting edge of the movable blade passes through the contact portion 20 ′ which is the V-shaped top of the cutting edge line, overlaps with the cutting edge 3a of the fixed blade 3, and the sheet material (not shown) is cut in full width. The
Thereafter, in the process in which the drive pin 12 further rotates counterclockwise and reaches the highest point of the rotation locus, the slide member 5 moves to the highest point in the return direction, and at the same time, the fixed cutting blade 1 locked to the slide member 5. The movable cutting blade 2 moves to the uppermost point in the return direction together with the cutting blade holder 4, and then stops.

Next, the operation | movement which partially cuts a sheet | seat material with the sheet | seat material cutting device mentioned above is demonstrated.
While waiting to insert the sheet material shown in FIG. 3A, a sheet material (not shown) is inserted in the same manner as the above-described full width cutting. Thereafter, the motor 14 is energized by the energization command in the partial cutting mode, and the worm wheel 11 is rotated clockwise by the driving force of the motor 14 via the worm gear 14 a and the gear 13 in the clockwise direction indicated by the arrow 21. Then, the drive pin 12 provided on the worm wheel 11 is rotated by the rotation of the worm wheel 11, and the drive pin 12 is pressed against the right end surface of the communication hole 5 a provided in the slide member 5 to cut the slide member 5 in the cutting width direction. Move 3mm to the right of

  In the process of moving 3 mm to the right side of the slide member 5 described above, that is, in the process of locking the movable cutting blade at the separated position with respect to the fixed cutting blade by the movable cutting blade driving mechanism, as shown in FIG. When the drive pin 12 rotates to the right by 90 degrees, the maximum is reached, and the slide member 5 moves 3 mm to the right indicated by the arrow 22. In the movement of the slide member 5, only the slide member 5 first moves to the right by 1.5 mm, and the left end surface of the through-hole 5 d which is a movable cutting blade locking portion provided on the slide member 5 is engaged with the movable cutting blade 2. It abuts on the pin 2c which is a joint. Thereafter, the slide member 5 further moves 1.5 mm to the right side, the left end surface of the through hole 5d of the slide member 5 engages the pin 2c of the movable cutting blade 2 and presses it to the right side, and the pin 2c of the movable cutting blade 2 is pushed. Move 1.5 mm to the right in the cutting width direction. A gap 20 can be formed between the movable cutting edge 2 and the fixed cutting edge 1 by moving the movable cutting edge 2 to the right in the cutting width direction by 1.5 mm. At this time, the pin 2b of the movable cutting blade 2 was supported by the end face of the long hole 5c of the slide member 5, but was not affected by the operation by the long hole 5c.

  When the slide member 5 further moves 1.5 mm to the right as described above, at the same time, the left end surface of the through-hole 5b, which is the fixed blade engaging portion of the slide member 5, is the engaging portion of the fixed cutting blade 1. It contacts the pin 1c. Through the above-described series of operations, the gap 20 can be formed between the opposing tips of the cutting edge 1a of the fixed cutting edge 1 and the cutting edge 2a of the movable cutting edge 2, and the cutting edge line of the movable cutting edge is notched by the gap 20. Could have.

  Thereafter, when the drive pin 12 further rotates to the right, the drive pin 12 rotates to the lowest point of the rotation locus as shown in FIG. 3C while pressing the lower end surface of the connecting hole 5a of the slide member 5 in the cutting direction. . The slide member 5 is moved to the lowest point in the cutting direction by the rotational movement of the drive pin 12, and the fixed cutting blade 1 and the movable cutting blade 2 locked to the slide member 5 are moved by the movement of the slide member 5. It is moved to the lowest point in the cutting direction together with the cutting blade holder 4. In the process in which the slide member 5 is moved to the lowest position in the cutting direction, as shown in FIG. 4B, the slide member 5 moves in the direction indicated by the arrow 22, and the pin 1c of the fixed cutting blade 1 is moved to the slide member. 5 enters the recessed portion 51a formed in the through hole 5a and is locked. Thereby, in the cutting width direction, the positional relationship of the slide member 5 with respect to the fixed cutting blade 1 and the movable cutting blade 2 locked to the slide member 5 is determined and fixed, and the cutting edge line of the movable blade has a V-shaped depression. Can be formed as a cutting edge line having a notch by the gap 20 at the apex of

As described above, the fixed cutting edge 1 and the cutting edges 1a and 2a of the movable cutting edge 2 moved by the movable cutting edge drive mechanism, which is a mechanical mechanism that converts the rotational movement into a substantially linear movement, become the cutting edge of the movable cutting edge. The sheet material (not shown) is successively engaged with the blade edge 3a of the fixed blade 3 from both sides of the sheet material (not shown), and the sheet material (not shown) is cut from both sides toward the center. By this cutting operation, the cutting edge of the movable blade passes through the vicinity of the V-shaped top of the cutting edge line and meshes with the cutting edge 3a of the fixed blade 3, but does not completely overlap due to the gap 20, and the sheet material ( The central portion (not shown) is left uncut and partially cut.
Thereafter, in the process in which the drive pin 12 rotates further to the right and reaches the highest point of the rotation locus, the slide member 5 moves to the highest point in the return direction, and at the same time, the fixed cutting edge 1 locked to the slide member 5. The movable cutting blade 2 moves to the uppermost point in the return direction together with the cutting blade holder 4, and then stops.

  As described above, in the embodiment of the present invention, when a sheet material having a thickness of 0.07 mm and a thickness of 0.15 mm is cut, in the above-described movable blade driving mechanism, the driving pin and the connecting hole provided in the slide member are In addition, the fixed cutting blade engaging portion and the movable cutting blade engaging portion provided on the slide member and the respective engaging portions provided on the fixed cutting blade and the movable cutting blade operated without backlash in a constantly contacted state. Further, during cutting, the fixed cutting blade and the movable cutting blade perform a substantially smooth linear motion without tilting. In the full width cutting of the sheet material, the cutting edge could be formed in a smooth straight line without causing cuts such as chopping and fluffing at the cutting edge of the cut sheet material. Moreover, in the partial cutting of the sheet material, it was possible to perform partial cutting with good cutting quality by providing a notch in the cutting edge line of the movable blade by a gap formed between the fixed cutting blade and the movable cutting blade.

It is an example which shows the Example of this invention, and is an exploded perspective view which shows the positional relationship of each component. It is a front view which shows the process of cut | disconnecting full width of a sheet | seat material. It is a front view which shows the process in which a sheet material is partially cut. It is a front view which shows partially the location of the fixed cutting blade latching | locking part provided in the slide member. It is a front view which shows partially the front-end | tip part which opposes the cutting width direction of a fixed cutting blade and a movable cutting edge, and shows an example of the shape of a mutual front-end | tip part.

Explanation of symbols

1. Fixed cutting blade, 1a. Cutting edge, 1b. Pin, 1c. Pin (engagement part), 2. Movable cutting blade, 2a. Cutting edge, 2b. Pin, 2c. 2. Pin (engagement part), Fixed blade, 3a. Cutting edge, 4. Cutting blade holder, 4a. Slot, 4b. Hole, 4c. Hole, 4d. Slot, 4e. Slot, 4f. Dubbo, 5. Slide member, 5a. Connecting hole, 5b. Through hole (fixed cutting edge locking portion), 5c. Long hole, 5d. Through hole (movable cutting edge locking portion), 6a. Shim, 6b. Shim, 7a. Color, 8a. Retaining ring, 8b. Retaining ring, 8c. Retaining ring, 9 Connecting pin, 9a. Washer, 9b. Retaining ring, 10. Frame, 10a. Paper feeding opening, 10b. Guide, 10c. Guide, 10d. Guide, 10e. Long hole , 11. Worm wheel (rotor), 12. Drive pin, 13. Gears, 14. Motor, 14a. Worm gear, 15. Sensor, 16. Case, 20. Gap, 20 '. Contact portion, 21. Arrow, 22. Arrow, 23. Arrow, 24. Arrow, 51a. Recess, 51b. Recess, 51c. Minebe, 51d. Distance between tops

Claims (7)

A sheet material cutting device comprising a movable blade having a cutting edge line that is recessed in a V shape toward the center in the cutting width direction, wherein the movable blade is a fixed cutting blade that forms one side of the cutting edge line that is inclined. And a movable cutting blade that forms the other side of the cutting edge line, and the movable cutting blade is moved to the fixed cutting blade by a movable cutting blade driving mechanism that reciprocates the movable cutting blade in the cutting width direction. sheet material by the movable blade is locked in a position causing spacing said movable cutting blade from the fixed cutting blade having a continuous edge line for full width cutting the sheet material by locking the position of contacting against A sheet material cutting device, characterized in that a movable blade having a notch in a cutting edge line for partially cutting the sheet. The fixed cutting blade fixed to the cutting blade holder, the movable cutting blade supported by the cutting blade holder and having a tip portion facing the fixed cutting blade in the cutting width direction and capable of reciprocating in the cutting width direction; a movable blade which have a, a rotor which rotate in the forward and reverse directions is connected to the driving device, a driving pin which is installed at a predetermined distance position from the axis of rotation of the rotor, the cutting rotary motion of the drive pin of the movable blade And a sheet material cutting device having a movable blade drive mechanism for converting to a reciprocating reciprocating motion , wherein the movable blade drive mechanism is provided with a slide member capable of reciprocating in a cutting width direction by a rotational motion of the drive pin, The slide member communicates with the drive pin, and can engage a communication hole having a width smaller than the width of the rotation locus of the outer diameter of the drive pin in the cutting width direction and an engagement portion provided on the movable cutting blade. Movable movable blade locking part, The fixed cutting blade has a fixed cutting blade locking portion that can lock the engaging portion provided at two positions different in the cutting width direction, and the rotation of one of the rotors causes the slide member to move to one side in the cutting width direction. By moving, the movable cutting edge moves to one side in the cutting width direction to form a gap with the fixed cutting edge, and the other rotation of the rotor moves the slide member to the other side in the cutting width direction. The sheet material cutting device according to claim 1, further comprising a movable cutting edge driving mechanism in which the movable cutting edge moves to the other side in the cutting width direction and comes into contact with the fixed cutting edge.   The engaging portion of the fixed cutting blade and the movable cutting blade is a pin-shaped member, and the fixed cutting blade locking portion and the movable cutting blade locking portion are a through-hole capable of locking the pin-shaped member. The sheet | seat material cutting device of Claim 2 characterized by these.   The through-hole of the fixed cutting edge locking portion has two recesses that allow the pin-shaped member of the fixed cutting edge to enter at different positions in the cutting width direction of the end surface on the return side of the movable blade. The sheet | seat material cutting device of Claim 3 characterized by these. Communication hole of the slide member, the width of the rotational locus of the outside diameter of the driving pins, one of claims 2 to 4, characterized in that it has a width obtained by subtracting the predetermined width of at least the gap in the cutting width direction 1 The sheet | seat material cutting device as described in a term . 6. The fixed distance between the fixed cutting edge and the movable cutting edge is a maximum distance from the cutting edge holder at a front end portion facing each other before starting the cutting of the sheet material. The sheet material cutting device according to Item 1 . The sheet material cutting device includes a fixed blade having a linear cutting edge line, presses the fixed blade and the cutting edge line of the movable blade so as to cross each other, and slides the movable blade to cut the sheet material. sheet material cutting apparatus according to any one of claims 1 to 6, characterized in that.