JP4721257B2 - Sheet material cutting device - Google Patents

Description

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

  2. Description of the Related Art Conventionally, for example, a sheet material cutting apparatus frequently used for a mini printer or the like having a sheet material width of approximately 120 mm or less used in a ticket vending machine or a register includes a cutting apparatus and a sewing machine for cutting a sheet material in full width (hereinafter referred to as full cut) There are three types: a cutting device for cutting partially or leaving at least one part (hereinafter referred to as partial cut), or a cutting device for selecting and switching between the full cut and the partial cut cutting devices. It was used.

  There has also been proposed a configuration in which two types of full cut and partial cut are formed by a single cutting device. For example, Patent Document 1 discloses that a slide-type sheet material cutting apparatus in which a movable blade moves substantially perpendicularly to a sheet material to cut the sheet material, and uses either a crank mechanism or a four-bar chain mechanism. The rotational force of the drive device that rotates in both reverse directions is converted into a reciprocating motion and transmitted to the movable blade so that the stroke difference of the movable blade can be expressed according to the rotational direction of the drive device. Is disclosed. The cutting device is movable with a structure that moves the deformed hole installed in the center of the link in the longitudinal direction of the link by giving rocking motion to the link and moving motion in the longitudinal direction of the link. The stroke of the movable blade can be changed via a pin fixed to the blade and communicated with the deformed hole. With this configuration, it is possible to switch between full cut and partial cut by simply switching the rotation direction of the drive device. After the cutting of the sheet material, the drive device is rotated in the same direction as at the time of cutting to return the movable blade to the standby position. It is excellent in that it can be made.

  Further, for example, Patent Document 2 discloses a sheet material cutting device having a configuration in which an eccentric amount of an eccentric cam pivotally attached to a rotor rotated by a drive motor expresses a stroke difference of the movable blade. Yes. The cutting device is excellent in that the movable blade is directly moved by the eccentric cam provided on the rotor, so that the number of parts can be reduced and the structure can be made compact.

  Further, for example, in Patent Document 3, a switching plate having an engagement pin pivotally attached to a rotor rotated by a drive motor so as to be pivotable by a predetermined angle and having a position different from the rotor center depending on the rotation direction, and rotation of the engagement pin Also disclosed is a sheet material cutting device that includes a link that converts motion into linear motion of the movable blade, and changes the rotation radius of the engagement pin by changing the rotation direction of the motor to express a stroke difference of the movable blade. Has been. The cutting device is also excellent in a compact structure of a switching plate and a link provided on the rotor.

In the above-described cutting device, a full cut and a partial cut 2 are adopted by adopting a configuration in which the stroke difference of the movable blade is expressed according to the rotation direction of the drive device such as a motor or the eccentric amount of the eccentric cam. The type is realized by one cutting device.
Japanese Patent No. 3226613 JP 2001-347484 A Japanese Patent No. 2724971

  As described above, there is disclosed a sheet material cutting device that can realize two types of full cut and partial cut with a single cutting device. For example, a sheet material such as a receipt having a thickness of about 0.07 mm is surely full. Switching between cut and partial cut is possible. However, a sheet material having a large cutting reaction force such as a barcode tag sheet having a thickness of about 0.2 mm still has at least two problems.

  One of the problems is that an essential member for positioning the movable blade is undesirably moved by receiving a cutting reaction force when the sheet material is cut. The main part is a link in a cutting device that employs the link mechanism disclosed in Material Patent Document 1, and is an eccentric cam in Patent Document 2, or is a switching plate in Patent Document 3. When these important members receive the cutting reaction force and move without permission, the stroke of the movable blade changes, or the movable blade tilts and moves while grabbing the guide member of the movable blade. Such a problem sometimes occurred.

  The other is a problem in the device configuration. In the movable blade moving mechanism such as the cutting device of Patent Document 1, when the movable blade returns to the standby position, the standby position of the movable blade differs depending on the moving direction of the link. A problem arises.

  If the stroke of the movable blade changes as described above, the stroke of the movable blade becomes inadequate when the sheet material is cut, and the end portion of the sheet material remains uncut at the time of full cut, or the uncut amount of the sheet material at the time of partial cut. In some cases, problems such as an increase occurred. In addition, since the main members move without permission, the movable blade cannot return to the predetermined standby position after the cutting of the sheet material is completed, and therefore the cutting edge of the movable blade protrudes to the sheet passing port of the sheet material and is conveyed. In some cases, the sheet material passing therethrough may be damaged.

  In addition, when the standby position of the movable blade changes as described above, when the driving device is started for the next cutting, it becomes difficult for the essential members to move smoothly in a predetermined direction, and the driving force for cutting is reduced. In some cases, a loss may occur, resulting in an increase in power consumption and further inability to perform a cutting operation.

  In order to avoid the problems as described above, for example, the stroke of the movable blade and the driving force of the movable blade driving device can be ensured more than necessary. For example, a device such as a printer or a ticket vending machine on which the cutting device is mounted is impaired in terms of compactness and energy saving.

  Further, instead of a method of controlling the stroke of the movable blade by a mechanical configuration as described above, for example, an electric control configuration for controlling the driving amount of the driving device by controlling the rotation angle of the motor as described above. There is also a way to avoid problems. However, when configuring a control circuit for such a drive device, it becomes a more complicated circuit and a larger control device than the control circuit for the drive device employed in the mechanical configuration, leading to an increase in manufacturing costs. It was extremely inconvenient.

  An object of the present invention is that a full cutting and a partial cutting of a sheet material can be performed by a single cutting device, and a main component for positioning of the movable blade receives a cutting reaction force when the sheet material is cut and moves freely. It is another object of the present invention to provide a sheet material cutting device capable of controlling the stroke of the movable blade with a mechanical configuration without shifting the standby position of the movable blade before and after cutting.

  The present inventor has examined the problem that the standby position of the movable blade is shifted before and after cutting of the sheet material, the wheel rotating in both forward and reverse directions, the drive pin installed on the wheel, and the rotational motion of the drive pin being movable blade A mechanical structure including a cam mechanism that converts the linear motion into a linear motion is adopted. By adopting this configuration, the drive pin and the movable blade and the cam mechanism are appropriately controlled to engage with each other, so that the drive pin and the cam mechanism do not move freely even when subjected to the cutting reaction force, and before and after cutting. The present invention was conceived by discovering that a full cutting and a partial cutting of a sheet material can be performed with a single cutting device without causing a shift in the standby position of the movable blade due to the rotation direction of the wheel.

That is, the present invention relates to a movable blade that cuts a sheet material, a wheel that is connected to a driving device and that rotates in both forward and reverse directions, a driving pin that is installed at a predetermined distance from the rotating shaft of the wheel, and a rotational movement of the driving pin. Is a sheet material cutting device having a cam mechanism that converts the movable blade into a linear motion of cutting and separation of the movable blade, wherein the cam mechanism has a width smaller than the rotation trajectory of the outer diameter of the drive pin in the cutting width direction. A connecting hole that communicates with the drive pin, a slide member having projections formed at least two positions in the cutting direction and symmetrical with respect to the center in the cutting width direction, and a width of the rotation locus of the outer diameter of the driving pin at least. a rectangular area which communicates said drive pin has a direction, the movable blade holder with a profiled bore having at least the protrusions and the same number of relief portions in the cutting direction of the rectangular area And the relief portion of the deformed hole is formed in a trapezoid shape that is recessed with an inclination that allows the protrusion to move in and out of the cutting width direction, and the drive pin is moved to the slide member by one rotation of the wheel. By moving the connecting hole of the movable blade holder and pushing the slide member in one of the cutting width directions and in the cutting direction, the protruding portion of the slide member is inclined to the trapezoidal shape in the relief portion formed in the deformed hole of the movable blade holder. To obtain a shortened stroke of the movable blade, and by the other rotation of the wheel, the drive pin moves the connecting hole of the slide member and pushes the slide member in the other of the cutting width direction and the opposite of the cutting direction. The protrusion of the slide member is detached from the relief portion formed in the deformed hole of the movable blade holder to obtain the extension stroke of the movable blade A certain sheet material cutting device.

  The deformed hole of the movable blade holder is preferably formed with a recess portion into which a protrusion formed on the slide member enters when the movable blade moves with an extension stroke.

  It is preferable that the cutting edge line of the movable blade forms a V-shaped depression.

  The sheet material cutting device preferably has a fixed blade, presses the fixed blade against the movable blade, and slides the movable blade to cut the sheet material.

  The drive pin is in contact with the separation side sliding surface of the connection hole provided in the slide member at the separation side dead center of the movable blade, and the slide member is in contact with the separation side sliding surface of the deformed hole formed in the movable blade holder. Is preferred.

  A movable blade, a wheel, a drive pin having a drive pin and a cam mechanism, a movable blade member in which the drive portion is supported by a frame, and a fixed blade member that supports the fixed blade are arranged so as to be separable and separated. A sheet material cutting device that cuts a sheet material by causing the fixed blade to cross-contact with the movable blade and sliding the movable blade may be used.

  According to the present invention, the stroke of the movable blade can be controlled by a mechanical configuration, and the standby position of the movable blade can be set before and after cutting even when receiving a cutting reaction force when cutting the sheet material or switching the rotation direction of the wheel. It is possible to realize a sheet material cutting device that can perform full cutting and partial cutting of a sheet material without shifting by a single cutting device. Thereby, the shape size and power consumption of the sheet material cutting device are suppressed, and the compactness and energy saving of a device such as a printer or a ticket vending machine equipped with the cutting device can be greatly improved, and the manufacturing cost can be reduced. Can do.

One of the important features of the present invention is that a slide member that can move in the cutting direction and the cutting width direction of the sheet material is provided, and the movable blade is moved in the cutting direction via the slide member by the drive pin. is there.
In the present invention, the movement of the slide member in the cutting width direction is different depending on the forward / reverse rotation of the drive pin, and the contact position between the slide member driven in the cutting direction and the movable blade holder is determined in a specific direction. The stroke in the cutting direction of the movable blade can be changed by changing the relief portion formed in the movable blade holder.
On the other hand, the drive pin itself installed at a predetermined distance from the rotation axis of the wheel exhibits a constant circular motion even in both forward and reverse rotations. Therefore, the top dead center of the movable blade can be determined by the top dead center position in a constant circular motion of the drive pin regardless of the forward and reverse rotation directions. That is, unlike the conventional sheet material cutting device, the top dead center position of the movable blade itself does not change with the change of the stroke.

This will be described in detail below.
The basic configuration of the present invention includes a movable blade that cuts a sheet material, a wheel that is connected to a drive device and that rotates in both forward and reverse directions, a drive pin that is installed at a predetermined distance from the rotation axis of the wheel, It is a sheet material cutting device having a cam mechanism for converting a rotary motion into a substantially linear motion of cutting and separation of a movable blade. That is, the movable blade is driven and the sheet material is cut by using the driving pin installed at a predetermined distance from the rotation axis of the wheel as a driving force.

  And the movable blade should just be the material which considered the kind of sheet | seat material which should be cut | disconnected, and the required cutting durability, for example, a stainless steel knife steel and a stainless steel rod are preferable. As the wheel drive device, for example, a combination of a motor and a gear or a cylinder and a rack and pinion can be employed. As the drive pin, for example, a fixed pin obtained by cutting stainless steel or a bearing structure such as a cam follower can be used.

  An important element of the present invention is a cam mechanism, and the cam mechanism of the present invention includes a slide member and a movable blade holder. The slide member is provided with a protrusion in the cutting direction, a connection hole having a width smaller than the rotation trajectory of the drive pin outer diameter in the cutting width direction is formed, and the drive pin is communicated with the connection hole. . The movable blade holder is formed with a deformed hole having at least the width of the rotation locus of the outer diameter of the drive pin in the cutting width direction, and the slide member is movable in the cutting direction and the cutting width direction in the deformed hole. In this way, the connecting hole formed in the slide member has a width smaller than the rotation trajectory of the outer diameter of the drive pin, so that the slide member is cut by the difference in the forward and reverse rotation directions from the top dead center position of the drive pin. Can be moved in any direction.

  In the present invention, the movable blade holder is provided with a deformed hole in which the slide member can move in the cutting direction and the cutting width direction, and an escape portion is formed in one of the cutting holes in the cutting width direction. The projection of the slide member enters the escape portion by the rotation of the slide member to obtain a shortened stroke of the movable blade, and the projection portion of the slide member separates from the relief portion by the other rotation of the wheel to obtain the extension stroke of the movable blade. . In other words, the stroke is changed by changing the distance from the drive pin at the bottom dead center position of the drive pin to the cutting edge of the movable blade, depending on the position of the moved slide member due to the difference between the forward and reverse rotation directions of the drive pin. It adopts the configuration of doing. As described above, the top dead center of the movable blade can be determined by the top dead center position in a constant circular motion of the drive pin regardless of the forward and reverse rotation directions.

  The shape of the irregular hole formed in the movable blade holder can be determined according to this stroke so that the stroke of the movable blade at the time of full cut becomes a predetermined amount. The shape of the irregular hole is not simply a round shape or a square shape, but is preferably formed in a different shape in the cutting width direction and the cutting direction of the sheet material, for example, a long square that is long in the cutting direction and a trapezoidal relief. It is preferable to form a chamfered shape having a portion because the movement of the slide member can be made smooth.

  In the present invention, the protrusion is formed in the cutting direction with respect to the slide member, and the relief portion is formed in the deformed hole of the movable blade holder. By configuring so that the protrusion can enter and leave the escape hole of the irregular hole, the slide member moves by the drive pin. When the protrusion of the slide member enters the escape portion of the deformed hole, the distance from the drive pin to the cutting edge of the movable blade at the bottom dead center position of the drive pin is shortened, and the movable blade has a shortened stroke. Thereby, cutting of a sheet material can be made into a partial cut. Further, when the protruding portion of the slide member is detached from the escape portion of the deformed hole, the distance from the drive pin to the cutting edge of the movable blade at the bottom dead center position of the drive pin is extended, and the movable blade becomes an extension stroke. Thereby, cutting of a sheet material can be made into a full cut.

  Further, at least two protrusions formed on the slide member are provided at substantially symmetrical positions from the center in the cutting width direction of the slide member, and relief portions formed in the deformed holes of the movable blade holder are formed on the slide member. It is preferable to provide at least the same number as the protrusions in the cutting width direction so that the protrusions can enter and leave. The reason is that when the slide member moves in the deformed hole, the inclination of the slide member is suppressed and the slide member can move more smoothly.

  Further, it is preferable that the deformed hole of the movable blade holder is formed with a recessed portion into which the protrusion formed on the slide member enters when the movable blade moves with an extension stroke. The reason for this is that when the slide member moves in the deformed hole, the tip of the protruding portion enters the recessed portion of the deformed hole so that the position of the slide member is maintained and the slide member can be prevented from slipping, and the movable blade is moved in the cutting operation direction. This is because the transmission efficiency of the driving force to be driven can be increased, which can contribute to power saving.

  The cutting edge line of the movable blade in the present invention may be determined by the required cutting position and cutting quality of the sheet material. For example, it can be a cutting edge line having a V-shaped depression, a cutting edge line having a shear angle toward one side like guillotine, or a so-called saw blade type cutting edge line of several ridges. In the present invention, it is more preferable to form a V-shaped depression on the edge line of the movable blade. The reason is that when the sheet material is cut, the sheet material is cut from the left and right end portions toward the center portion, the inclination of the movable blade due to the cutting reaction force is suppressed, and the moment acting on the movable blade is extremely reduced. This is because the movement of the movable blade becomes extremely smooth because it can be suppressed to a small size.

  For example, with a cutting edge line having a shear angle toward one side like the above guillotine, the sheet material is cut from one end to the opposite end when the sheet material is cut, and the sheet material is pushed against the movable blade. There are disadvantages compared to the cutting edge line in which a V-shaped depression is formed, for example, the cutting portion of the sheet material is bent by being inclined. In addition, with the saw blade type cutting edge line described above, the cutting edge is stabbed into the sheet material and cut into pieces, and a V-shaped depression is formed such that the cut portion of the sheet material becomes rough. There are disadvantages compared to the cutting edge line.

  The sheet material cutting device according to the present invention preferably has a fixed blade, presses the fixed blade against the movable blade, and slides the movable blade to cut the sheet material. With the configuration in which the movable blade is slid with the fixed blade to cut the sheet material, the position where the sheet material is cut is always the cutting edge position of the fixed blade, and the positioning of the sheet material becomes extremely easy.

When using a fixed blade, the cutting edge line of the movable blade is preferably a cutting edge line having a V-shaped depression as described above or a cutting edge line having a shear angle toward one side like guillotine. This is because, for example, in the saw blade type cutting edge line described above, when the fixed blade presses against and slides against the movable blade, the cutting edge of the movable blade collides with the fixed blade, which may hinder sheet material cutting. Because there is.
As a means for pressing the fixed blade to the movable blade, for example, the elasticity of the fixed blade or the movable blade itself is used, or a plate spring or a coil spring is disposed on the movable blade or the fixed blade. May be pressed to a predetermined cutting position. Further, for example, the movable blade itself can function as a spring that applies a pressing force to the fixed blade.

  In this invention, it can comprise so that a drive pin may contact a movable blade in the separation side dead center of a movable blade. The state in which the movable blade is at the separation side dead center is a state in which the movable blade is in the standby position. If configured as described above, when the movable blade is moved to the standby position, the movable blade is directly moved by the drive pin, so that the stop position of the movable blade in the standby position can always be the same position, and the seat The shift of the standby position of the movable blade before and after cutting the material can be suppressed. Also, compared to moving the movable blade to the standby position via another member, wear of the connecting portion between the members can be reduced, and the positioning error of the movable blade due to the gap between the members or the accumulation of dimensional errors of the members. And the deviation of the standby position of the movable blade before and after cutting can be made extremely small.

  Moreover, in this invention, it can also comprise so that a drive pin may contact | connect the separation side sliding surface of the deformed hole of a movable blade holder in the separation side dead center of a movable blade. When configured as described above, the stop position of the movable blade at the standby position is always the same, although the movable blade standby position differs by the thickness of the movable blade holder compared to the configuration in which the drive pin contacts the movable blade. It is possible to eliminate the shift of the standby position of the movable blade before and after cutting the sheet material. Further, as compared with the case where the movable blade is moved to the standby position via a plurality of members, it is preferable because the positioning error of the movable blade due to the gap between the members or the accumulation of dimensional errors of the members can be suppressed.

  Further, in the present invention, at the separation side dead center of the movable blade, the drive pin comes into contact with the separation side sliding surface of the connecting hole provided in the slide member, and this slide member is on the separation side of the deformed hole formed in the movable blade holder. It can also be configured to contact the sliding surface. In this configuration, the movable blade standby position differs by the thickness of the movable blade holder and the slide member as compared to the configuration in which the drive pin contacts the movable blade, but the stop position of the movable blade at the standby position is The position can always be the same, and the deviation of the standby position of the movable blade before and after cutting the sheet material can be eliminated.

  In the present invention, the movable blade member and the fixed blade member are arranged so as to be separable, and the fixed blade is cross-contacted with the movable blade at the combined position, and the movable blade is slid to cut the sheet material. be able to. At this time, the movable blade member may be a unit composed of a movable blade, a wheel, a drive pin, a drive unit including a cam mechanism, and a frame that supports the drive unit. The fixed blade member can be a unit composed of a fixed blade and a member that supports the fixed blade in cross pressure contact with the movable blade. For example, a plate spring or a coil spring is used as the member that supports the fixed blade in cross pressure contact with the movable blade. As a result, a more reliable pressure contact force can be obtained.

  Such a sheet material cutting device of the present invention in which the movable blade member and the fixed blade member can be separated and combined can be separated from a print head and a platen roller used in, for example, a POS (Point of sales) system or a register. Even in this printer, the sheet material can be easily replaced by disposing the movable blade member and the fixed blade member in a separable manner. Then, even if the movable blade member and the fixed blade member are combined again, a member for supporting the fixed blade in cross pressure contact with the movable blade as described above is provided, and the fixed blade is cross pressed in contact with the movable blade at the combined position and movable. By adopting a configuration in which the sheet material is cut by sliding the blade, it is possible to easily position the fixed blade with respect to the movable blade or the movable blade with respect to the fixed blade. As a result, the cutting position of the sheet material can always be held at the same position, and excellent cutting quality can be realized and maintained. For example, in a printer or ticket machine for a POS system or a register, the thickness is 1 mm or less and the width is 150 mm. In order to put into practical use a sheet material cutting device for cutting the following sheet material and roll material, a suitable configuration can be provided.

Hereinafter, the sheet material cutting device according to the present invention will be described in detail by way of specific examples.
FIG. 1 is an exploded perspective view showing an example of the present invention and showing the positional relationship between components. FIG. 2 is a configuration diagram showing the front and side surfaces in FIG. 1 and having a fixed blade 10, and is waiting to insert a sheet material (not shown) into the sheet material cutting device. Show.
FIG. 3 shows a schematic diagram of the main part of the cam mechanism at the time of full cut in one embodiment of the present invention, and FIG. 4 shows a schematic diagram of the main part of the cam mechanism at the time of partial cut. 3A and 4A show that the movable blade 20 is being cut, and FIGS. 3B and 4B show that the movable blade 20 is being moved to the standby position.

The arrangement of the sheet material cutting device according to the embodiment will be described with reference to the drawings.
1 and FIG. 2 are arranged in the positional relationship so that the cutting edge line 21 of the movable blade 20 and the cutting edge line 11 of the fixed blade 10 can be cross-slided so that the sheet material can be cut. Each member was manufactured and arranged so that the stroke difference of the movable blade 20 at the time of cutting was 1.45 mm.

Both the movable blade 20 and the fixed blade 10 were manufactured by press-cutting a stainless steel knife having a thickness of 0.7 mm and then grinding the cutting edge. The movable blade 20 is formed with a V-shaped cutting edge line 21 having a V-shaped opening in the cutting width direction with a V-shaped opening of 165 degrees, and the fixed blade 10 is formed with a linear cutting edge line 11. The shear angle at that time was 7.5 degrees.
Further, a notch 22 having a width of 2 mm and a length of 1.7 mm is formed at the center of the cutting edge line 21 of the movable blade 20, and the length of the notch 22 is cut to a stroke difference of 1.45 mm of the movable blade 20. It was determined by adding a margin of 0.25 mm for leaving.

A movable blade holder 60 formed of a resin material having slidability with respect to the above-described movable blade 20 was fixed to a substantially central portion in the cutting width direction opposite to the blade edge line 21 with respect to the movable blade 20.
The movable blade 20 was slidably supported by frames 30 and 31 manufactured by bending a cold rolled steel plate having a thickness of 0.8 mm.

In the drive unit 40 that drives the movable blade 20, a commercially available motor 44 (DC motor having a stop torque of 8.3 mN · m) was used as a drive source. Then, a resin-molded product wheel 42 (number of teeth 72) is meshed with a resin-molded product worm gear 43 (one line) provided on the rotation shaft of the motor 44, and the gear is connected, thereby driving the cylindrical drive having an outer diameter of 3.7 mm. The pin 41 was installed with an interval between the rotation axis of the wheel 42 and the axis of the drive pin 41 being 6.65 mm.
Further, the limit switch 80 is provided so that the position of the movable blade 20 can be detected, and the cutting operation of the sheet material can be automated.

The cam mechanism 50 described above is configured by engaging the drive pin 41 with the slide member 70 movable in the cutting width direction and the above-described movable blade holder 60 fixed to the movable blade 20.
The slide member 70 was formed of a slidable resin material and provided with protrusions 72 at two locations in the cutting width direction of the slide member 70 in the cutting direction. In addition, the width is smaller than the width of the rotation locus of the outer diameter of the drive pin 41 in the cutting width direction (17 mm obtained by adding the diameter of the drive pin 41 to 3.7 mm and the rotation diameter of 13.3 mm), and the drive pin 41 can be contacted. A connecting hole 71 having a separate sliding surface 73 and a cutting end surface 74 is provided, and the drive pin 41 is communicated with the connecting hole 71.

The movable blade holder 60 is provided with a deformed hole 61 having a width (19.6 mm) larger than the width of the rotation locus of the outer diameter of the drive pin 41 (the above-mentioned 17 mm) in the cutting width direction at a substantially central portion thereof. The drive pin 41 was allowed to communicate with the connection hole 71 provided in the member 70.
The deformed hole 61 of the movable blade holder 60 is configured by combining a substantially trapezoidal relief portion 62 in a substantially rectangular region where the slide member 70 can move in the cutting width direction, and the drive pin 41 contacts when the movable blade 20 is separated. A separation-side sliding surface 63 is provided. In addition, when the movable blade 20 moves in the cutting operation direction at the time of full cut, a recess portion 64 into which the tip of the projection 72 of the slide member 70 enters is provided.
Further, the same number of relief portions 62 as the protrusions 72 of the slide member 70 are provided.

Next, a full cut operation will be described in the sheet material cutting device in the embodiment.
In FIG. 2, a sheet material (not shown) is inserted from the front side to the back side in the drawing between the cutting edge line 21 of the movable blade 20 and the cutting edge line 11 of the fixed blade 10, and then the motor is positioned. 44 was rotated, and the wheel 42 and the drive pin 41 were rotated counterclockwise via the worm gear 43. The rotated drive pin 41 moved to the left side in the cutting width direction in the connecting hole 71 of the slide member 70 and pushed the slide member 70. The slide member 70 pushed by the drive pin 41 moved to the left in the cutting width direction, and further moved by being pushed in the cutting operation direction by the drive pin 41 that rotates counterclockwise by the rotation of the wheel 42. At this time, as shown in FIG. 3A, the protrusion 72 of the slide member 70 entered the recess 64 of the deformed hole 61 of the movable blade holder 60 and pressed the movable blade holder 60 in the cutting operation direction. Further, the drive pin 41 rotates counterclockwise and pushes the movable blade holder 60 through the slide member 70 while moving to the right in the cutting width direction in the connection hole 71 of the slide member 70. Thereby, the movable blade 20 fixed to the movable blade holder 60 moved in the cutting operation direction, and the sheet material was cut (full cut).

Next, the partial cutting operation in the sheet material cutting device in the embodiment will be described.
As in the case of the full cut described above, after the sheet material was inserted and positioned, the motor 44 was rotated, and the wheel 42 and the drive pin 41 were rotated clockwise via the worm gear 43. The rotated drive pin 41 moved to the right in the cutting width direction in the connecting hole 71 of the slide member 70 and pushed the slide member 70. The slide member 70 pushed by the drive pin 41 moved to the right in the cutting width direction, and further moved by being pushed in the cutting operation direction by the drive pin 41 that rotates clockwise by the rotation of the wheel 42. At this time, as shown in FIG. 4A, the tip of the protrusion 72 of the slide member 70 enters the escape portion 62 of the deformed hole 61 of the movable blade holder 60, and the slide member 70 is a recess 64 of the movable blade holder 60. The movable blade holder 60 was pressed in the cutting operation direction. Further, the drive pin 41 rotates clockwise and pushes the movable blade holder 60 in the cutting operation direction via the slide member 70 while moving to the left in the cutting operation in the connection hole 71 of the slide member 70. Thereby, compared with the above-mentioned full cut, the stroke of the movable blade 20 fixed to the movable blade holder 60 by the amount that the protrusion 72 of the slide member 70 enters the relief portion 62 of the deformed hole 61 of the movable blade holder 60. The sheet material was cut (partial cut).

  In the above-described full cut or partial cut, cutting was performed using a thin sheet material (thickness 0.07 mm) and a thick sheet material (thickness 0.2 mm). At this time, the drive pin 41 and the slide member 70, and the movable blade holder 60 to which the slide member 70 and the movable blade 20 are fixed can be cut without rattling in a constantly contacted state, and the movable blade 20 tilts during cutting. It was possible to move smoothly and linearly. Further, no defects such as burrs were observed on the cut surfaces of either the full cut or the partial cut sheet material, and a good cut could be obtained.

Next, an operation in which the movable blade moves to the standby position after cutting the sheet material will be described.
The motor 44 was further rotated immediately after the full cut or partial cut. At this time, as shown in FIG. 3 (b) or 4 (b), the drive pin 41 contacts and is pressed against the separation-side sliding surface 63 of the deformed hole 61 of the movable blade holder 60, and further the drive pin 41. When the movable blade 20 is rotated and moved, the movable blade holder 60 to which the movable blade 20 is fixed has moved to the separating side which is the anti-cutting operation direction of the movable blade 20. Further, the drive pin 41 is always pressed in contact with the separation-side sliding surface 63 of the deformed hole 61 of the movable blade holder 60 until the movable blade 20 starts moving to the separation side and stops at the standby position. It was. Thereby, it was confirmed that the position of the movable blade 20 at the separation-side dead point, that is, the standby position of the movable blade 20 can always be the same position.

FIG. 5 shows the sheet of the present invention in which the movable blade member 120 and the fixed blade member 110 are arranged so as to be separable from each other, the fixed blade 10 is cross-contacted with the movable blade 20 at the combined position, and the movable blade 20 is slid. It is an example which shows the Example of the cutting device of the sheet | seat material which cut | disconnects material. And the front and side which show the positional relationship of each component are shown, and it is in the state which waits to insert a sheet | seat material in a sheet | seat material cutting device.
In this embodiment, the sheet material is inserted from the left side to the right side in the side view of FIG. 5, cut and discharged. As in the present embodiment, the fixed blade member 110 having a simple structure is configured to be separable to the discharge side of the sheet material, so that the united separation of the movable blade member 120 and the fixed blade member 110 can be easily performed. Can be. In the configuration of the present embodiment, the movable blade member 120 and the fixed blade member 110 may not be separated as long as the movable blade 20 is engaged with the fixed blade 10 when moved in the cutting operation direction.

  In this embodiment, the movable blade member 120 supports the drive unit 40 including the movable blade 20, the wheel 42, the drive pin 41, and the cam mechanism 50 with the frame 30. The fixed blade member 110 supports the fixed blade 10 and is provided with a plate spring 130 made of a spring steel material so that the blade edge line 11 of the fixed blade 10 is in pressure contact with the blade edge line 21 of the movable blade 20. Then, the movable blade member 120 and the fixed blade member 110 were fixed to a frame material (not shown) with bolts (not shown) to form a sheet material cutting device. A frame member (not shown) is installed so as to be openable and closable around a rotation fulcrum, and is provided with a lock mechanism (not shown) that is fixed in a combined state. The method of manufacturing and arranging other parts, the operation when cutting the sheet material, and the operation of moving the movable blade 20 to the standby position after cutting are the same as in the above-described first embodiment, and thus the description thereof is omitted here.

  Separation of the movable blade 20 and the fixed blade 10 in the above-described sheet material cutting apparatus can be easily performed by releasing the lock mechanism and separating the frame material. Further, the uniting of the movable blade 20 and the fixed blade 10 can be easily performed by providing the leaf spring 130 and closing the frame material and operating the lock mechanism. After separating and coalescing as described above, a sheet material (not shown) having a thickness of 0.07 mm and a thickness of 0.2 mm is fully cut and partially cut, and the sheet material is always positioned at the cutting edge line 11 of the fixed blade 10. It was confirmed that the movable blade 20 can be cut without tilting or colliding with the fixed blade 10 at the time of cutting.

  The sheet material cutting device of the present invention can be switched between full cutting and partial cutting with one cutting device, the standby position of the movable blade for each cutting can be made the same position, and the movable blade member and the fixed blade member Since separation and coalescence can be performed with good reproducibility, it is extremely useful as a sheet material cutting device provided in, for example, a ticket issuing machine that issues a thick ticket as well as a POS system or a cash register printer.

It is a disassembled perspective view which shows the Example of this invention. It is a block diagram which shows the Example of this invention. It is a schematic diagram which shows the cam mechanism principal part at the time of the full cut in the Example of this invention. It is a schematic diagram which shows the cam mechanism principal part at the time of the partial cut in the Example of this invention. It is a block diagram which shows an example which can separate and unite the movable blade member and fixed blade member of the Example of this invention.

Explanation of symbols

10. 10. Fixed blade, Cutting edge line, 20. Movable blade, 21. Cutting edge line, 22. Notch, 30, 31. Frame, 40. Drive unit, 41. Drive pin, 42. Wheel, 43. Worm gear, 44. Motor, 50. Cam mechanism, 60. Movable blade holder, 61. Deformed hole, 62. Relief part, 63. Separate side sliding surface, 64. Hollow part, 70. Slide member, 71. Connecting hole, 72. Projection, 73. Separation side sliding surface, 74. Cutting side end face, 80. Limit switch, 110. Fixed blade member, 120. A movable blade member, 130. Leaf spring

Claims (6)

A movable blade that cuts a sheet material, a wheel that is connected to a drive device and rotates in both forward and reverse directions, a drive pin that is installed at a predetermined interval from the rotation axis of the wheel, and the rotational motion of the drive pin is cut by the movable blade A sheet material cutting device having a cam mechanism for converting into a linear motion of separation, wherein the cam mechanism communicates the drive pin with a width smaller than the rotation trajectory of the drive pin outer diameter in the cut width direction. A slide member having projections formed at least two positions in the cutting direction at symmetrical positions from the center of the connection hole and the cutting width direction, and at least the width of the rotation locus of the outer diameter of the drive pin in the cutting width direction; a rectangular area which communicates said driving pin, comprising a movable blade holder with a profiled bore having at least the protrusions and the same number of relief portions in the cutting direction of the rectangular area, said different-type hole The relief portion is formed in a trapezoidal shape that is recessed with an inclination that allows the protrusion to move in and out of the cutting width direction, and the drive pin moves through the connection hole of the slide member by one rotation of the wheel. When the slide member is pushed in one of the cutting width directions and in the cutting direction, the protruding portion of the slide member enters the relief portion formed in the deformed hole of the movable blade holder along the trapezoidal inclination , and the movable blade Of the movable blade holder by moving the connecting pin of the slide member by the other rotation of the wheel and pushing the slide member in the other of the cutting width direction and the opposite of the cutting direction. The protruding portion of the slide member is detached from the relief portion formed in the deformed hole to obtain an extension stroke of the movable blade. That sheet material cutting device.   2. The sheet material cutting according to claim 1, wherein the deformed hole of the movable blade holder is formed with a recess portion into which a protrusion formed on the slide member enters when the movable blade moves with an extension stroke. apparatus.   The sheet material cutting device according to claim 1 or 2, wherein a cutting edge line of the movable blade forms a V-shaped depression.   The sheet material cutting device has a fixed blade, presses the fixed blade against the movable blade, and slides the movable blade to cut the sheet material. The sheet | seat material cutting device in any one.   The drive pin is in contact with the separation side sliding surface of the connection hole provided in the slide member at the separation side dead center of the movable blade, and the slide member is in contact with the separation side sliding surface of the deformed hole formed in the movable blade holder. The sheet | seat material cutting device in any one of Claims 1 thru | or 4 characterized by these. A movable blade, a wheel, a drive pin having a drive pin and a cam mechanism, a movable blade member in which the drive portion is supported by a frame, and a fixed blade member that supports the fixed blade are arranged so as to be separable and separated. The sheet material cutting device according to claim 4 or 5, wherein the fixed blade is brought into cross pressure contact with the movable blade, and the movable blade is slid to cut the sheet material.