JP5373871B2 - Cutter equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutter device capable of stably and reliably delivering a cut sheet material to a sheet delivery unit. <P>SOLUTION: In the cutter device, which includes a fixed blade and a movable blade configured to be engageable with each other, in which an edge line of the movable blade is inclined by a predetermined angle relative to an edge line of the fixed blade, and which cuts a cutting object sheet by the engagement between the fixed blade and the movable blade, a blade thickness of the movable blade in a predetermined range near a cutting end portion based on the inclination of the edge line is larger than that of the other part. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  Embodiments described herein relate generally to a cutter device that is used in a printer or the like and cuts a sheet material such as a long sheet after printing into a predetermined shape.

  There is a so-called guillotine cutter as a cutter device that is provided in a printer or the like and cuts paper after printing in a transverse direction perpendicular to the transfer direction. This guillotine cutter has a fixed blade and a movable blade facing each other with a sheet material to be cut (hereinafter described as paper) in between, the movable blade is moved in parallel with respect to the fixed blade, and both blade surfaces are in sliding contact with each other. In this state, the sheet is cut in a transverse direction perpendicular to the transport direction. In this case, the ridge line of the blade of the movable blade is inclined at a predetermined angle (for example, a V shape) with respect to the ridge line of the blade of the fixed blade, and by this inclination, the sheet material starts from the portion where the movable blade first meshes with the fixed blade. Is started, and the cutting ends at the portion where the movable blade finally meshes with the fixed blade.

  In such a conventional guillotine cutter, the paper is held by the transport mechanism when the machine is equipped with a mechanism (such as a printer) having a mechanism for transporting the cut paper to the paper discharge unit. There is no need to stabilize the paper condition.

  However, the provision of the paper transport mechanism after cutting invites an increase in the size of the entire apparatus. Therefore, many apparatuses that do not have the paper transport mechanism after cutting are used. When a conventional guillotine cutter is mounted on such a device that does not have a paper transport mechanism after cutting, the discharged paper is not stably discharged, and a structure that assists the paper discharge operation is required. became.

  Here, in the conventional guillotine cutter, when cutting the paper, the paper is bent with respect to the paper discharge direction by the thickness of the movable blade. That is, as described above, the cutting of the sheet material is started from the portion where the movable blade first meshes with the fixed blade due to the inclination of the blade of the movable blade. In this case, since the movable blade enters the cut portion, the cut paper portion is pressed in the sheet discharge direction by the thickness of the blade of the movable blade to bend. Since the last connection portion of the paper is cut at the cutting end point where the fixed blade is finally engaged with the fixed blade, the cut paper is discharged from the inside of the cutter device due to the reaction force to return the bending of the paper.

Japanese Patent Laid-Open No. 10-315184

  However, even if the thickness of the movable blade is thick, it is about 1 mm, the deformation of the paper is small, and the reaction force itself that this bending returns is also small, so that the paper after cutting falls to the vicinity of the cutter device. For this reason, when the distance from the cutter device to the paper discharge section is long, a special structure for assisting the discharge operation is required as described above. For example, it is conceivable to provide a large inclined portion between them and slide the cut paper by its own weight. For this purpose, the printer having the cutter device has to be set at a high position with respect to the paper discharge unit, which is restricted by the arrangement of the devices. Further, when the printer cannot be set at a high position in this way, a special structure such as having a paper transport mechanism after paper cutting is required.

  An object of the present invention is to provide a cutter device that can stably and surely discharge a cut sheet material to a paper discharge unit.

  A cutter device according to an embodiment of the present invention has a fixed blade and a movable blade configured to be able to engage with each other, and a ridge line of the blade of the movable blade is inclined at a predetermined angle with respect to a ridge line of the blade of the fixed blade. A cutter device for cutting a sheet material to be cut by meshing of the fixed blade and the movable blade, wherein the movable blade has a blade thickness within a predetermined range near a cutting end portion based on the inclination of the edge line of the blade. The blade thickness is thicker than other parts.

1 is an external view of a printer equipped with a cutter device according to an embodiment of the present invention. FIG. 2 is an internal configuration diagram of the printer shown in FIG. 1. It is a perspective view which shows the state before cutting operation of the cutter apparatus which concerns on one embodiment of this invention. It is a perspective view which shows the state after cutting | disconnection operation | movement of the cutter apparatus which concerns on one embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described in detail.

  In this embodiment, the thickness of the movable blade of a cutter device called a so-called guillotine cutter is made non-uniform. That is, the blade thickness of the movable blade in the vicinity of the portion where the last connection portion of the paper at the time of cutting is cut is made thicker than other portions. For this reason, at the time of cutting, the thick movable blade portion enters between the cut edges of the cut portion of the paper, so that the last connection portion is cut in a state where the paper is greatly bent in the paper discharge direction. , The reaction force to return the deflection of the paper can be increased, the discharge speed and discharge force of the cut paper discharged from the cutter device increases, and the paper is surely moved to the far paper discharge section It can be reached stably. Hereinafter, it explains in full detail using drawing.

  FIG. 1 shows the appearance of a printer equipped with a cutter device according to this embodiment. The printer main body 1 has a long sheet material (hereinafter, described as paper to be printed) 2 wound in a roll shape attached to a rear portion (right side in the drawing) in a rotatable manner. One end of the paper 2 is sent from the supply unit 3 into the printer main body 1, and predetermined characters and figures are printed by the printing unit 4 in the printer main body 1. The printed paper 2 is sent in the longitudinal direction, and the leading end of the paper 2 passes through a cutter device 5 adjacent to the printing unit 4, and further to the outside from a discharge unit formed on the front surface (left side in the drawing) of the printer body 1. Sent out.

  The cutter device 5 cuts the paper 2 in the transverse direction perpendicular to the transport direction when the length from the leading end of the long paper 2 reaches a preset length. Since the front end of the paper 2 cut into a predetermined shape has already been sent out from the discharge portion, it falls to the outside due to its own weight and is discharged.

  Here, as shown in FIG. 2, the long sheet 2 is supplied and conveyed from the right side of the drawing by the above-described supply unit 3 having a pair of upper and lower conveying rollers 11 and 12 and a pulse motor 13. On the conveyance path of the paper 2, a print head (thermal head) 15 and a platen 16 constituting the printing unit 4, a fixed blade 17 and a movable blade 18 constituting the cutter device 5 are arranged. The cutter drive mechanism 19 is configured to be movable in the vertical direction in the figure. The pulse motor 13, the print head 15, and the cutter driving mechanism 19 are controlled in association with each other by the control means 20.

  The control means 20 is configured by a computer or the like, and controls the supply unit 3 to convey the paper 2 to the left in the drawing by a preset program, and gives a print command to the print head 15 of the print unit 4. Printing based on the print data is executed on the paper passing between the platen 14 and the paper. When the printed paper 2 passes between the fixed blade 17 and the movable blade 18 of the cutter device 5 and reaches a predetermined cutting position, the control means 20 detects this and gives a drive command to the cutter drive mechanism 19 to move the movable blade. 18 is driven downward to cut the sheet 2. The cut paper 2 is discharged to a paper discharge unit.

  The cutter device 5 is a so-called guillotine cutter, and, as shown in FIG. 2, the fixed blade 17 and the movable blade 18 are arranged to face each other with the paper 2 to be cut therebetween. Then, by moving the movable blade 18 in parallel with the fixed blade 17 (up and down in the illustrated example), both the blade surfaces of the fixed blade 17 and the movable blade 18 are engaged with each other in a sliding state, and the sheet 2 is moved in the transfer direction. And cut in the transverse direction at right angles. Details of the fixed blade 17 and the movable blade 18 will be described with reference to FIGS.

  FIG. 3 shows a state before the cutting operation of the paper 2, and FIG. 4 shows a state during the cutting operation. In FIG. 3 and FIG. 4, the edge line 17 a of the fixed blade 17 is arranged in parallel with the back surface of the paper 2. The ridge line 18 a of the movable blade 18 is inclined at a predetermined angle with respect to the ridge line 17 a of the fixed blade 17. In the illustrated example, the edge line 18a of the blade of the movable blade 18 is formed in a V shape so as to extend from both longitudinal ends of the movable blade 18 toward the central portion in the longitudinal direction.

  The movable blade 18 has a coupling pin 22 provided at the center thereof coupled to an elliptical coupling hole 23 a provided in the middle of the drive lever 23. One end of the drive lever 23 is pivotally supported on the frame of the printer main body 1 shown in FIG. 1 by a fulcrum pin 24 (shown in FIGS. 3 and 4). Further, the other end portion of the drive lever 23 is provided with an oblong connection hole 23b, which is connected to an operation portion (not shown) of the cutter drive mechanism 19 shown in FIG.

  With the above configuration, when the cutter driving mechanism 19 is operated and the driving lever 23 is driven to rotate counterclockwise around the fulcrum pin 24, the movable blade 18 is fixed to the fixed blade via the connecting hole 23a and the connecting pin 22. Translate towards 17 That is, it moves downward as shown in FIG. 2 and engages with the fixed blade 17 as shown in FIG.

  Here, since the ridge line 18a of the movable blade 18 is inclined with respect to the ridge line 17a of the fixed blade 17, the portion where the movable blade 18 first meshes with the fixed blade 17 (in the example of the drawing, the movable blade 18). The cutting of the sheet 2 is started from a portion near both ends of 18, and the cutting ends at a portion where the movable blade 18 finally meshes with the fixed blade 17 (the central portion of the movable blade 18 in the illustrated example).

  In this embodiment, the surface of the movable blade 18 near the cutting end portion based on the inclination of the ridge line 18a described above is thickened by a predetermined range to the opposite surface of the surface that meshes with the fixed blade 17, and the blade thickness of that portion is changed. A blade thickness portion 18b that is thicker than the blade thickness of this portion is provided.

  As shown in the figure, when the ridge line 18a of the movable blade 18 is formed in a V shape from both ends in the length direction of the movable blade 18 toward the center in the length direction, the blade thickness portion 18b is This is a predetermined range of the central portion of the V shape.

  Further, the blade thickness portion 18b of the movable blade 18 is set to a range of 1/2 to 1/4 (preferably about 1/3) of the length of the movable blade. Further, the thickness increase of the blade thickness portion 18b of the movable blade 18 is within the blade thickness of the portion of the movable blade 18 where the thickness increase is not formed. For example, since the blade thickness of the movable blade 18 is normally 1 to 1.5 mm, the thickness of the blade thickness portion 18b is also about 1 to 1.5 mm.

  These numerical values are values obtained by confirming that the cut sheet can be discharged stably and reliably.

  The overall operation will be described below. One end of the paper 2 wound in a roll shape is conveyed from the supply unit 3 into the printer main body 1, and predetermined characters and figures are printed on the paper surface by the printing unit 4 in the printer main body 1. The printed paper 2 is sent to the adjacent cutter device 5. At this time, the movable blade 18 is in the raised position with respect to the fixed blade 17 (the state shown in FIGS. 2 and 3), and the sheet 2 moves to the left in FIG. It is sent to the outside from the discharge part formed on the outside.

  When it is detected by a sensor (not shown) that the length from the leading end of the long sheet 2 has reached a preset length, the control unit 20 operates the cutter device 5 to transfer the sheet 2. Cut in the transverse direction perpendicular to the direction. That is, the cutter driving mechanism 19 shown in FIG. 2 rotates the drive lever 23 shown in FIG. 3 counterclockwise around the fulcrum pin 24 to move the movable blade 18 downward.

  At this time, since the ridge line 18a of the movable blade 18 is inclined in a V shape with respect to the ridge line 17a of the fixed blade 17, portions near both ends of the movable blade 18 first mesh with the fixed blade 17, Cutting of the sheet 2 is started from this portion. When the cutting of the paper 2 is started in this way, the movable blade 18 enters between the cut edges of the cut portion, and the cut portion of the paper 2 is bent in the paper discharge direction. Then, when cutting based on the inclination of the edge line 18a of the blade proceeds and approaches the central portion of the V shape, the vicinity of the central portion of the movable blade 18 is the blade thickness portion 18b whose blade thickness is thicker than other portions. The blade thickness portion 18b enters between the cut edges of the cut portion. For this reason, the deflection in the paper discharge direction that occurs at the cut portion of the paper 2 becomes larger.

  Therefore, when the cutting at the center portion of the movable blade 18 where the movable blade 18 finally meshes with the fixed blade 17, that is, when the last connection portion of the paper 2 is cut, the vicinity thereof is greatly bent in the paper discharge direction. In this state, the sheet 2 is cut, and the reaction force for returning the deflection of the sheet 2 also increases. For this reason, the discharge speed and discharge force of the cut paper discharged from the cutter device 5 are increased, and the cut paper can be reliably and stably reached even when the paper discharge port is far. I can do it.

  Thus, by making the blade thickness of the movable blade 18 non-uniform and increasing the thickness in the vicinity of the portion where the last connection portion of the paper 2 is cut, the deflection of the paper can be increased and the cutting is performed. As a result, the reaction force to return the bending of the generated paper also increases. That is, the speed and force of the paper discharged from the cutter device 5 are increased. Accordingly, the cut sheet can be discharged to the paper discharge section stably and reliably without providing a special structure for assisting the paper discharge operation. Therefore, the degree of freedom of arrangement increases.

  In the above-described embodiment, the edge line 18a of the movable blade 18 is inclined in a V shape, but may be inclined linearly in the same direction. Also in this case, if the blade thickness in the vicinity of the portion that finally meshes with the fixed blade of the movable blade is formed thicker than the other portions, a large deflection can be generated in the paper discharge direction as in the above-described embodiment. The cut sheet material can be discharged stably and reliably.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1 ... Printer body 2 ... Sheet material (paper)
DESCRIPTION OF SYMBOLS 5 ... Cutter apparatus 17 ... Fixed blade 17a ... Edge line of blade 18 ... Movable blade 18a ... Edge line of blade 18b ... Blade thickness part 19 ... Cutter drive mechanism 20 ... Control means

Claims (4)

A fixed blade and a movable blade configured to engage with each other, and a ridge line of the blade of the movable blade is inclined at a predetermined angle with respect to a ridge line of the blade of the fixed blade, and the fixed blade and the movable blade are engaged with each other. A cutter device for cutting a sheet to be cut by:
A cutter apparatus characterized in that a blade thickness in a predetermined range near a cutting end portion based on the inclination of the edge line of the blade of the movable blade is thicker than the blade thickness of other portions.   The ridgeline of the blade of the movable blade is formed in a V-shape from both ends of the movable blade in the length direction toward the center in the length direction, and the portion where the blade thickness is thicker than the others is the shape of the V-shape. The cutter device according to claim 1, wherein the cutter device is within a predetermined range of the central portion.   The cutter device according to claim 1 or 2, wherein the portion where the blade thickness is thicker than the others is in a range of 1/2 to 1/4 of the length dimension of the movable blade.   The cutter apparatus according to any one of claims 1 to 3, wherein the thickness increase of the portion where the blade thickness is thicker than the others is within the blade thickness of the other portion of the movable blade.

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