WO2012090346A1 - 用紙切断装置 - Google Patents

用紙切断装置 Download PDF

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Publication number
WO2012090346A1
WO2012090346A1 PCT/JP2011/004073 JP2011004073W WO2012090346A1 WO 2012090346 A1 WO2012090346 A1 WO 2012090346A1 JP 2011004073 W JP2011004073 W JP 2011004073W WO 2012090346 A1 WO2012090346 A1 WO 2012090346A1
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WO
WIPO (PCT)
Prior art keywords
blade
movable blade
paper
edge
movable
Prior art date
Application number
PCT/JP2011/004073
Other languages
English (en)
French (fr)
Inventor
畠山　和彦
Original Assignee
サトーホールディングス株式会社
株式会社サトー知識財産研究所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by サトーホールディングス株式会社, 株式会社サトー知識財産研究所 filed Critical サトーホールディングス株式会社
Priority to EP11852513.8A priority Critical patent/EP2660017B1/en
Priority to US13/995,663 priority patent/US9089985B2/en
Publication of WO2012090346A1 publication Critical patent/WO2012090346A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/255—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/26—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B26D1/30—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut with limited pivotal movement to effect cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/26—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B26D1/30—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut with limited pivotal movement to effect cut
    • B26D1/305—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut with limited pivotal movement to effect cut for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/18—Toggle-link means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/045—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/065—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2685—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member flexible mounting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/086—Electric, magnetic, piezoelectric, electro-magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/14—Crank and pin means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]

Definitions

  • the present invention relates to a paper cutting device that is mounted on, for example, a printer and cuts paper.
  • the present invention relates to a paper cutting device that moves a movable blade toward a fixed blade so as to move between the blade edge of the fixed blade and the blade edge of the movable blade.
  • the present invention relates to a paper cutting device that cuts the paper supplied to the printer.
  • the movable blade 101 is moved toward the fixed blade 100, and the blade edge 101 a of the movable blade 101 is slid along the blade edge 100 a of the fixed blade 100, whereby the blade edge of the fixed blade 100 is moved.
  • the paper S supplied between 100a and the blade edge 101a of the movable blade 101 is cut.
  • the movable blade 101 is moved to the open position X by opening the blade edge 101a of the movable blade 101 with respect to the blade edge 100a of the fixed blade 100 by a moving mechanism (not shown), and the paper S supplied at this open position is fed.
  • the movable blade 101 is moved, the paper S is cut by a scissor cutting operation, and is again placed in the open position X.
  • the movable blade 101 is fixed to the fixed blade 100 with a spring (not shown) or the like so that the blade edge 101 a of the movable blade 101 slides reliably with respect to the blade edge 100 a of the fixed blade 100.
  • the fixed blade 100 is used for the purpose of improving the print quality by conveying the paper linearly along the surface of the thermal head 2 on which the heating element is provided, for example, to improve the printing quality. Is positioned at a lower position relative to the discharge position of the sheet S of the platen 1 so that the sheet is obliquely supplied onto the cutting edge 100a of the fixed blade 100 from a position higher than the cutting edge 100a of the fixed blade 100.
  • the paper S is supplied at the open position X of the movable blade 101 (FIG. 8 (1)), and the movable blade 101 cuts the paper S. (FIG. 8 (2) (3)), and then when returning to the open position X again (FIG. 8 (4)), the cutting edge 101a of the movable blade 101 interferes with the leading edge Sa of the sheet S to be supplied next. In this case, when the sheet S is supplied for the next cutting, the sheet is folded or jammed (see FIG. 8 (FIG. 8 (4)). 5)).
  • FIG. 8 (1) the open position X of the movable blade 101
  • the leading edge Sa of the paper S after cutting the paper S is the blade edge 100 a of the fixed blade 100. It protrudes slightly and interferes with the movement path of the cutting edge 101a of the movable blade 101, so that it is easily caught and turned over.
  • glue such as label paper with glue attached to one side of the paper and the surface with glue attached temporarily to the mount, or linerless label that has glue attached to one side of the paper and does not require a mount
  • the glue of the paper S adheres to the cutting edge 101a of the movable blade 101, and it becomes easier to turn.
  • the present invention has been made in view of the above-described problems, and prevents the movable blade from interfering with the paper in the process of reaching the open position after the paper is cut by the movable blade, and the paper is caught by the movable blade to cause paper folding.
  • An object of the present invention is to provide a paper cutting device that can prevent a situation in which a paper jam occurs.
  • the paper cutting device of the present invention moves the movable blade toward the fixed blade provided on the base and slides the blade edge of the movable blade along the blade edge of the fixed blade.
  • the movable blade opens the blade edge of the movable blade with respect to the blade edge of the fixed blade and the supplied paper
  • a moving mechanism that moves the blade from the open position that receives the blade and moves the blade to the open position again, and a biasing mechanism that biases the movable blade toward the fixed blade so that the blade edge of the movable blade slides against the blade edge of the fixed blade
  • a separation mechanism for separating the movable blade from the fixed blade against the urging force of the urging mechanism when the movable blade reaches the open position after the sheet is cut by the movable blade.
  • the movable blade when cutting the paper, first, the movable blade is positioned at the open position by the moving mechanism, and the supplied paper is received between the blade edge of the fixed blade and the blade edge of the movable blade. Then, the movable blade is moved from the open position by the moving mechanism, the blade edge of the movable blade is slid along the blade edge on the fixed blade side, and a so-called slicing operation is performed between the blade edge of the fixed blade and the blade edge of the movable blade. Cut the supplied paper. During the cutting period of the paper by the movable blade, the movable blade is urged toward the fixed blade side by the urging mechanism so that the blade edge of the movable blade slides against the blade edge of the fixed blade. Is called. After the paper is cut by the movable blade, the movable blade reaches the open position by the moving mechanism. In the process, the movable blade is separated from the fixed blade against the biasing force of the biasing mechanism. *
  • the leading edge of the paper is prevented from being caught and lifted.
  • the leading edge of the paper slightly protrudes from the edge of the fixed blade after cutting the paper. Therefore, the leading edge of the paper does not interfere with the movement path of the blade edge of the movable blade, so that it is possible to prevent the paper from being caught and turned up easily.
  • the movable blade is similarly moved away from the fixed blade, so that the adhesive of the paper adheres to the blade edge of the movable blade and is prevented from being caught and easily turned up. .
  • the leading edge of the paper is prevented from being caught by the blade edge of the movable blade. This prevents the paper from being folded or jammed.
  • the separation mechanism is configured to include a cam provided on the fixed blade side and a cam follower provided on the movable blade side and in contact with the cam.
  • a first guide surface that guides the cam follower so that the cutting edge of the movable blade is in sliding contact with the cutting edge of the fixed blade, and when the movable blade reaches the open position after the cutting of the paper of the movable blade, the cam follower is And a second guide surface that is lifted against the urging force of the urging mechanism.
  • the movable blade On the first guide surface, the movable blade is guided so that the blade edge of the movable blade is in sliding contact with the blade edge of the fixed blade, so that the sheet is reliably cut by the movable blade. After the paper is cut, the movable blade reaches the open position. In this process, the cam follower is guided by the cam and moved from the first guide surface to the second guide surface, and lifted against the urging force of the urging mechanism. The movable blade is separated from the fixed blade. In this case, since the movable blade is moved by the cam and the cam follower, the operation can be surely performed by a simple mechanism. *
  • the cam follower is composed of a rolling element that rolls on the cam surface of the cam. Since the rolling element as the cam follower rolls on the cam surface following the movement of the movable blade, the operation is performed smoothly.
  • the moving mechanism is provided on a base on one end side of the fixed blade so as to be swingable about an axis perpendicular to the direction along the blade edge of the fixed blade.
  • a rotating shaft having an axis in the direction along the cutting edge of the movable blade, and a first link and a second link corresponding to each rotating shaft.
  • a drive unit that swingably drives at least one of the first link and the second link, and the urging mechanism includes the first link and the second link.
  • the blade is constituted by a spring for urging the fixed blade side.
  • the movable blade can be reliably cut off with respect to the fixed blade, and the movable blade can be reliably separated by the separation mechanism.
  • the movable blade is separated from the fixed blade by the separation mechanism against the urging force of the urging mechanism in the process of the movable blade reaching the open position after the paper is cut by the movable blade. It is possible to prevent the leading edge of this sheet from being caught and lifted by interfering with the leading edge of the next sheet.
  • the leading edge of the paper slightly protrudes from the edge of the fixed blade after cutting the paper. Therefore, the leading edge of the paper does not interfere with the moving path of the blade edge of the movable blade, so that it is possible to reliably prevent a situation where the paper is easily caught and turned up.
  • glue such as label paper with glue attached to one side of the paper and the surface with glue attached temporarily to the mount, or linerless label that has glue attached to one side of the paper and does not require a mount
  • glue such as label paper with glue attached to one side of the paper and the surface with glue attached temporarily to the mount, or linerless label that has glue attached to one side of the paper and does not require a mount
  • 1 is an overall perspective view showing a paper cutting device according to an embodiment of the present invention. It is a perspective view which shows the principal part of the paper cutting device which concerns on embodiment of this invention. It is a figure which shows operation
  • the relationship of the fixed blade and movable blade of the paper cutting device concerning an embodiment of the invention is shown, (a) is a top view and (b) is a figure showing a side view.
  • 1 is a diagram illustrating a paper cutting device according to an embodiment of the present invention together with a main part of a printer in which the paper cutting device is mounted and a relationship between a paper and a movable blade.
  • the paper cutting device T according to the embodiment shown in FIGS. 1 to 6 is mounted on a printer that performs printing on a label paper S having glue on one side. As shown in FIG. 5, the printer transports the label paper S, prints the label paper S supported on the platen 1 by the thermal head 2 in the transport process, and sends the printed label paper S to the paper cutting device T. The paper is cut and cut into a required size by the paper cutting device T, and the cut label is used.
  • the paper cutting device T is provided on a base 10, a plate-like fixed blade A provided on the base 10, and the base 10.
  • the blade A of the fixed blade A is provided by moving the movable blade B toward the fixed blade A and sliding the blade edge Ba of the movable blade B along the blade edge Aa of the fixed blade A.
  • the sheet S supplied between the blade and the blade edge Ba of the movable blade B is cut.
  • One end 11 of the fixed blade A is fixed to the lower side of the one side bracket 12 of the base 10, and the other end 13 of the fixed blade A is fixed to the lower side of the other side bracket 14 of the base 10. Further, as shown in FIG.
  • the fixed blade A is configured so that the sheet S is supplied onto the blade edge Aa of the fixed blade A obliquely from a position higher than the blade edge Aa of the fixed blade A.
  • the sheet S is positioned at a lower position with respect to the discharge position and is not a so-called flat path in which the sheet S is supplied in a direction perpendicular to the sliding direction of the movable blade B with respect to the fixed blade A. Is supplied obliquely with respect to the sliding direction with respect to the fixed blade A.
  • the paper cutting device T uses the movable blade B and the paper S supplied by opening the blade edge Ba of the movable blade B with respect to the blade edge Aa of the fixed blade A.
  • a moving mechanism 20 is provided which moves from the receiving open position X (FIG. 3A) and moves to the open position X again.
  • the moving mechanism 20 includes a first link 21 that supports one end 15 of the movable blade B and a second link 22 that supports the other end 16 of the movable blade B.
  • the first link 21 is a member in which two plates are connected by a plurality of connecting rods 23, and the cutting edge Aa of the fixed blade A is positioned above the one side bracket 12 that is the base 10 on the one end 11 side of the fixed blade A.
  • the second link 22 is a member in which two L-shaped members are connected via a support shaft 28 described later, on the upper side of the other side bracket 14 that is the base 10 on the other end 13 side of the fixed blade A,
  • the fixed blade A is provided so as to be swingable about an axis 25 in a direction orthogonal to the direction along the cutting edge Aa.
  • both end portions 15 and 16 of the movable blade B are each provided with a rotation shaft 26 having an axis line along the cutting edge Ba of the movable blade B.
  • the first link 21 and the second link 22 corresponding to these are pivotally supported.
  • the rotating shaft 26 on the one end 15 side of the movable blade B is pivotally supported by a support shaft 27 that is installed between the two plates of the first link 21.
  • the support shaft 27 is provided on the first link 21 so as to be rotatable about an axis line in a direction orthogonal to the direction along the cutting edge Aa of the fixed blade A.
  • the rotating shaft 26 on the other end 16 side of the movable blade B is pivotally supported by a support shaft 28 that is installed between the two plates of the second link 22.
  • the support shaft 28 is provided on the second link 22 so as to be rotatable about an axis line in a direction orthogonal to the direction along the cutting edge Aa of the fixed blade A.
  • the moving mechanism 20 includes a drive unit 30 that swings and drives at least one of the first link 21 and the second link 22 (the first link 21 in the embodiment).
  • the drive unit 30 includes an electric motor 31 provided with the one side bracket 12 on the outside.
  • the rotating shaft 31a of the electric motor 31 is provided with an eccentric shaft 32 that revolves with respect to the rotating shaft 31a.
  • the eccentric shaft 32 engages with a crank groove 33 formed on one plate of the first link 21.
  • the first link 21 is swung through the crank groove 33 via the eccentric shaft 32 by the rotation of the rotating shaft 31 a of the electric motor 31.
  • the swing of the first link 21 causes the second link 22 to also swing via the movable blade B, and the swing of the first link 21 and the second link 22 causes the movable blade to move.
  • B is moved from the open position X and performs a so-called squeeze-off operation, and is again positioned at the open position X. That is, the movable blade B is circulated along a predetermined locus, and when the blade edge Ba of the movable blade B slides along the blade edge Aa of the fixed blade A, as shown in FIG. The blade edge Ba of the movable blade B is moved so as to intersect the blade edge Aa of the fixed blade A at one point.
  • the paper cutting device T includes an urging mechanism that urges the movable blade B toward the fixed blade A so that the blade edge Ba of the movable blade B slides with respect to the blade edge Aa of the fixed blade A. 35.
  • the urging mechanism 35 is provided between the corresponding links 21 and 22 and the movable blade B in at least one of the first link 21 and the second link 22 (both in the embodiment).
  • the coil spring 36 is urged toward the fixed blade A side. As shown in FIGS. 3, 4, and 6, the coil spring 36 is inserted through the rotating shaft 26, one end is locked to the links 21 and 22, and the other end is locked to the movable blade B. *
  • the sheet cutting device T is configured so that the movable blade B reaches the open position X after the sheet S is cut by the movable blade B, as shown in FIGS. Is separated from the fixed blade A against the urging force of the urging mechanism 35.
  • the separation mechanism 40 includes a cam 41 provided on the surface opposite to the electric motor 31 on the one end 11 side of the fixed blade A, and a cam follower 42 provided on one end of the movable blade B and in contact with the cam 41.
  • the cam follower 42 is configured by a roller as a rolling element that rolls on the cam surface of the cam 41 and is rotatably supported on an axis in a direction along the cutting edge Ba of the movable blade B. *
  • the cam surface of the cam 41 is vertically long, a lower first guide surface 43 that guides the cam follower 42 so that the blade edge Ba of the movable blade B is in sliding contact with the blade edge Aa of the fixed blade A, and the movable blade
  • the upper second guide surface 44 that lifts the cam follower 42 against the urging force of the urging mechanism 35 is provided.
  • the label paper S is transported and the thermal head 2 is first placed on the platen 1 as shown in FIG. After that, printing is performed, and then the paper S is discharged from the platen 1 and is supplied onto the fixed blade A obliquely from a position higher than the cutting edge Aa of the fixed blade A of the paper cutting device T.
  • the movable blade B is positioned at the open position X by the moving mechanism 20, and the supplied paper S is received between the blade edge Aa of the fixed blade A and the blade edge Ba of the movable blade B (see FIG. FIG. 6 (1)).
  • the movable blade B is moved from the open position X by the moving mechanism 20, the blade edge Ba of the movable blade B is slid along the blade edge on the fixed blade A side, and the blade edge Aa of the fixed blade A is moved by a so-called slicing operation.
  • the sheet S supplied between the movable blade B and the blade edge Ba is cut (FIGS. 6 (2) and (3)).
  • the movable blade B is urged by the urging mechanism 35 toward the fixed blade A so that the blade edge Ba of the movable blade B slides with respect to the blade edge Aa of the fixed blade A. Therefore, cutting is performed smoothly.
  • the cam follower 42 is guided by the cam 41 and moves from the second guide surface 44 to the first guide surface 43.
  • the first guide surface 43 guides the blade edge Ba of the movable blade B so as to be in sliding contact with the blade edge Aa of the fixed blade A, so that the cutting of the paper S by the movable blade B is performed reliably.
  • the label cut by the paper cutting device T is used as appropriate.
  • the movable blade B After the sheet S is cut by the movable blade B, the movable blade B reaches the open position X by the moving mechanism 20, but in the process (FIG. 6 (4)), the urging force of the urging mechanism 35 is applied by the separation mechanism 40. Accordingly, it is separated from the fixed blade A. That is, in the process where the movable blade B reaches the open position X, the cam follower 42 is guided by the cam 41 and moved from the first guide surface 43 to the second guide surface 44 and lifted against the urging force of the urging mechanism 35. The movable blade B is separated from the fixed blade A. In this case, since the movable blade B is moved by the cam 41 and the cam follower 42, the operation can be reliably performed by a simple mechanism.
  • the leading edge of the paper S does not interfere with the movement path of the blade edge Ba of the movable blade B, and therefore, it is prevented from being caught and easily turned up.
  • the glue of the paper S adheres to the cutting edge Ba of the movable blade B and is easily caught. Is prevented.
  • the present apparatus is mounted on a printer that performs printing on the label sheet S with glue attached on one side. It may be provided in another type of printer that prints on the paper S, and is not limited to the printer, and may be provided in various devices that handle the paper S, or may be a single paper cutting device T. Of course, it may be changed as appropriate.
  • T paper cutting device paper 1 platen 2 thermal head 10 base 12 one side bracket 14 other side bracket A fixed blade Aa fixed blade edge B movable blade Ba movable blade edge X open position 20 moving mechanism 21 first link 22 first 2 link 24 shaft 25 shaft 26 rotating shaft 27 support shaft 28 support shaft 30 drive unit 31 electric motor 32 eccentric shaft 33 crank groove 35 biasing mechanism 36 coil spring 40 separation mechanism 41 cam 42 cam follower 43 first guide surface 44 second Guide surface

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  • Engineering & Computer Science (AREA)
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  • Nonmetal Cutting Devices (AREA)
  • Handling Of Sheets (AREA)

Abstract

【課題】　可動刃による用紙の切断後に可動刃が開位置に至る過程で用紙と干渉しないようにし、用紙が可動刃に引っ掛かって用紙折れを生じたりジャムを生じる事態を防止する。【解決手段】　可動刃Ｂを、固定刃Ａの刃先Ａａに対して可動刃Ｂの刃先Ｂａを開いて供給される用紙Ｓを受け入れる開位置Ｘから移動させ再び開位置Ｘに位置させる移動機構２０と、可動刃Ｂの刃先Ｂａが固定刃Ａの刃先Ａａに対して摺動するように可動刃Ｂを固定刃Ａ側に付勢する付勢機構３５と、可動刃Ｂによる用紙Ｓの切断後に可動刃Ｂが開位置Ｘに至る過程で該可動刃Ｂを付勢機構３５の付勢力に抗して固定刃Ａから離間させる離間機構４０と備えた。離間機構４０は固定刃Ａ側に設けられたカム４１と、可動刃Ｂ側に設けられカム４１に接触するカムフォロア４２とを備えて構成した。

Description

用紙切断装置
本発明は、例えばプリンタ等に搭載され用紙を切断する用紙切断装置に係り、特に、可動刃を固定刃に向けて移動させて所謂鋏切り動作により固定刃の刃先と可動刃の刃先との間に供給される用紙を切断する用紙切断装置に関する。
一般に、例えば、図７に示すように、一方面に糊が付着したラベル用紙Ｓに印刷を行うプリンタにおいては、ラベル用紙Ｓを搬送し、その搬送過程でプラテン１に支持したラベル用紙Ｓにサーマルヘッド２により印字を行い、この印字したラベル用紙Ｓを搭載した用紙切断装置Ｔａに供給し、この用紙切断装置Ｔａにおいて所要の大きさに切断し、この切断したラベルを使用している。　従来、この種の用紙切断装置としては、例えば、特開２００９－１０１４７０号公報（特許文献１）に掲載されたものが知られている。これは、図７に示すように、固定刃１００に向けて可動刃１０１を移動させ、可動刃１０１の刃先１０１ａを固定刃１００の刃先１００ａに沿って摺動させることにより、固定刃１００の刃先１００ａと可動刃１０１の刃先１０１ａとの間に供給される用紙Ｓを切断する。この場合、図示外の移動機構により、可動刃１０１を、固定刃１００の刃先１００ａに対して可動刃１０１の刃先１０１ａを開いて開位置Ｘに位置させ、この開位置で供給される用紙Ｓを受け入れ、それから可動刃１０１を移動させて鋏み切り動作により用紙Ｓを切断し、再び開位置Ｘに位置させる。可動刃１０１による用紙の切断期間中は、可動刃１０１の刃先１０１ａが固定刃１００の刃先１００ａに対して確実に摺動するように、スプリング（図示せず）などで可動刃１０１を固定刃１００側に付勢している。また、印字後の用紙Ｓはサーマルヘッド２の発熱体が設けられている面に沿うように直線的に用紙を搬送することで印字品質を向上させる等の理由により、固定刃１００は、用紙Ｓが固定刃１００の刃先１００ａより上位の位置から斜めに固定刃１００の刃先１００ａ上に供給されるように、プラテン１の用紙Ｓの排出位置に対して下位の位置に位置させられており、用紙Ｓが可動刃１０１の固定刃１００に対する摺動方向に対して直角方向に供給される所謂フラットパスではなく、用紙Ｓは可動刃１０１の固定刃１００に対する摺動方向に対して斜めになって供給される。
特開２００９－１０１４７０号公報
ところで、上記の従来の用紙切断装置Ｔａにおいては、図８に示すように、可動刃１０１の開位置Ｘで用紙Ｓが供給され（図８（１））、可動刃１０１が用紙Ｓを切断し（図８（２）（３））、その後、開位置Ｘに再び戻る際に（図８（４））、可動刃１０１の刃先１０１ａが次に供給される用紙Ｓの先端縁Ｓａに干渉し、これを引っ掛けて持ち上げることがあり（図８（４））、その場合には、次の切断のために用紙Ｓが供給された際、用紙折れを生じたりジャムの原因になる（図８（５））という問題があった。特に、図７に示すように、可動刃１０１の固定刃１００に対する摺動方向に対して用紙が斜めになって供給されるので、用紙Ｓの切断後にその先端縁Ｓａが固定刃１００の刃先１００ａより僅かに出っ張って、可動刃１０１の刃先１０１ａの移動経路に干渉することになり、そのため、引っ掛かってめくれ易くなる。また、特に、用紙の一方面に糊が付着され糊が付着された面を台紙に仮着したラベル用紙や、用紙の一方面に糊が付着され台紙を必要としないライナーレスラベルなどの、糊付けされているラベル用紙Ｓの場合では、可動刃１０１の刃先１０１ａに用紙Ｓの糊が付着してより一層めくれ易くなる。　
本発明は上記の問題点に鑑みて為されたもので、可動刃による用紙の切断後に可動刃が開位置に至る過程で用紙と干渉しないようにし、用紙が可動刃に引っ掛かって用紙折れを生じたりジャムを生じる事態を防止することができる用紙切断装置を提供することを目的とする。
上記課題を解決するため本発明の用紙切断装置は、基台に設けられた固定刃に向けて可動刃を移動させ該可動刃の刃先を上記固定刃の刃先に沿って摺動させることにより上記固定刃の刃先と可動刃の刃先との間に供給される用紙を切断する用紙切断装置において、　上記可動刃を上記固定刃の刃先に対して該可動刃の刃先を開いて上記供給される用紙を受け入れる開位置から移動させ再び開位置に位置させる移動機構と、上記可動刃の刃先が上記固定刃の刃先に対して摺動するように該可動刃を固定刃側に付勢する付勢機構と、上記可動刃による用紙の切断後に該可動刃が上記開位置に至る過程で該可動刃を上記付勢機構の付勢力に抗して上記固定刃から離間させる離間機構と備えた構成としている。　
これにより、用紙を切断するときは、先ず、移動機構により可動刃を開位置に位置させ、供給される用紙を固定刃の刃先と可動刃の刃先との間に通過させて受け入れる。そして、移動機構により可動刃を開位置から移動させ、可動刃の刃先を固定刃側の刃先に沿って摺動させ、所謂鋏み切り動作により、固定刃の刃先と可動刃の刃先との間に供給された用紙を切断する。可動刃による用紙の切断期間中は、可動刃は付勢機構により可動刃の刃先が固定刃の刃先に対して摺動するように固定刃側に付勢されているので、切断が円滑に行われる。可動刃による用紙の切断後は、移動機構により可動刃は開位置に至るが、その過程では、離間機構により、付勢機構の付勢力に抗して固定刃から離間させられる。　
この場合、可動刃の刃先が次に供給される用紙の先端縁に干渉しようとしても、可動刃は固定刃から離間させられるので、この用紙の先端縁を引っ掛けて持ち上げることが防止される。特に、可動刃の固定刃に対する摺動方向に対して用紙が斜めになって供給される場合には、用紙の切断後にその先端縁が固定刃の刃先より僅かに出っ張るが、可動刃は固定刃から離間させられるので、用紙の先端縁が可動刃の刃先の移動経路に干渉することがなく、そのため、引っ掛かってめくれ易くなる事態が防止される。また、特に、糊付けされているラベル用紙の場合でも、同様に、可動刃は固定刃から離間させられるので、可動刃の刃先に用紙の糊が付着し、引っ掛かってめくれ易くなる事態が防止される。　この結果、可動刃の開位置において、次の切断のために用紙が供給された際、用紙の先端縁が可動刃の刃先に引っ掛かってめくれる事態が防止されているので、用紙が確実に刃先間を通過することができ、用紙折れを生じたりジャムを生じる事態が防止される。　
そして、必要に応じ、上記離間機構を、上記固定刃側に設けられたカムと、上記可動刃側に設けられ上記カムに接触するカムフォロアとを備えて構成し、上記カムのカム面を、上記可動刃の刃先が上記固定刃の刃先に対して摺接するように上記カムフォロアをガイドする第１ガイド面と、上記可動刃の用紙の切断終了後該可動刃が開位置に至る際上記カムフォロアを上記付勢機構の付勢力に抗して持ち上げる第２ガイド面とを備えて構成している。これにより、可動刃が移動機構により開位置から移動させられると、カムフォロアがカムにガイドされてその第２ガイド面から第１ガイド面に移動する。第１ガイド面では、可動刃の刃先が固定刃の刃先に対して摺接するようにガイドするので、可動刃による用紙の切断が確実に行われる。用紙の切断後は、可動刃は開位置に至るが、その過程では、カムフォロアはカムにガイドされてその第１ガイド面から第２ガイド面に移動し付勢機構の付勢力に抗して持ち上げられ、可動刃は固定刃から離間させられる。この場合、カムとカムフォロアにより、可動刃を動かすので、簡易な機構により動作を確実に行わせることができる。　
この場合、上記カムフォロアを、上記カムのカム面を転動する転動体で構成したことが有効である。可動刃の移動に追従してカムフォロアとしての転動体がカム面を転動するので、それだけ動作が円滑に行われる。　
また、必要に応じ、上記移動機構を、上記固定刃の一端側の基台に該固定刃の刃先に沿う方向に直交する方向の軸を中心に揺動可能に設けられ上記可動刃の一端部を支持する第１リンクと、上記固定刃の他端側の基台に該固定刃の刃先に沿う方向に直交する方向の軸を中心に揺動可能に設けられ上記可動刃の他端部を支持する第２リンクとを備え、上記可動刃の両端部に夫々該可動刃の刃先に沿う方向の軸線を有した回動軸を設け、該各回動軸を対応する第１リンク及び第２リンクに回動可能に軸支し、上記第１リンク及び第２リンクの少なくともいずれか一方を揺動駆動する駆動部を設けて構成し、　上記付勢機構を、上記第１リンク及び第２リンクの少なくともいずれか一方において、対応するリンクと上記可動刃との間に設けられ該可動刃を上記固定刃側に付勢するスプリングで構成している。　固定刃に対する可動刃の所謂鋏み切り動作を確実に行わせることができるとともに、離間機構での可動刃の離間を確実に行わせることができる。
本発明によれば、可動刃による用紙の切断後に可動刃が開位置に至る過程で、離間機構により、可動刃を付勢機構の付勢力に抗して固定刃から離間させるので、可動刃が次の用紙の先端縁と干渉してこの用紙の先端縁を引っ掛けて持ち上げることを防止することができる。特に、可動刃の固定刃に対する摺動方向に対して用紙が斜めになって供給される場合には、用紙の切断後にその先端縁が固定刃の刃先より僅かに出っ張るが、可動刃は固定刃から離間させられるので、用紙の先端縁が可動刃の刃先の移動経路に干渉することがなく、そのため、引っ掛かってめくれ易くなる事態を確実に防止することができる。また、特に、用紙の一方面に糊が付着され糊が付着された面を台紙に仮着したラベル用紙や、用紙の一方面に糊が付着され台紙を必要としないライナーレスラベルなどの、糊付けされているラベル用紙の場合でも、同様に、可動刃は固定刃から離間させられるので、可動刃の刃先に用紙の糊が付着し、引っ掛かってめくれ易くなる事態を防止することができる。この結果、可動刃の開位置において、次の切断のために用紙が供給された際、用紙折れが生じたりジャムを生じる事態を防止することができる。
本発明の実施の形態に係る用紙切断装置を示す全体斜視図である。 本発明の実施の形態に係る用紙切断装置の要部を示す斜視図である。 本発明の実施の形態に係る用紙切断装置の可動刃の動作を示す図である。 本発明の実施の形態に係る用紙切断装置の固定刃及び可動刃の関係を示し、（ａ）は平面図、（ｂ）は側面図を示す図である。 本発明の実施の形態に係る用紙切断装置をこれが搭載されるプリンタの要部とともに示すとともに用紙と可動刃との関係を示す図である。 本発明の実施の形態に係る用紙切断装置の作用を示す図である。 従来の用紙切断装置をこれが搭載されるプリンタの要部とともに示すとともに用紙と可動刃との関係を示す図である。 従来の用紙切断装置の作用をその不具合とともに示す図である。
以下、添付図面に基づいて、本発明の実施の形態に係る用紙切断装置について詳細に説明する。尚、上記と同様のものには同一の符号を付して説明する。　図１乃至図６に示す実施の形態に係る用紙切断装置Ｔは、一方面に糊が付着したラベル用紙Ｓに印刷を行うプリンタに搭載されている。図５に示すように、プリンタは、ラベル用紙Ｓを搬送し、その搬送過程でプラテン１に支持したラベル用紙Ｓにサーマルヘッド２により印字を行い、この印字したラベル用紙Ｓを用紙切断装置Ｔに供給し、この用紙切断装置Ｔにおいて所要の大きさに切断し、この切断したラベルを使用している。　
本発明の実施の形態に係る用紙切断装置Ｔは、図１及び図２に示すように、基台１０と、基台１０に設けられる板状の固定刃Ａと、基台１０に設けられた板状の可動刃
Ｂとを備え、固定刃Ａに向けて可動刃Ｂを移動させ可動刃Ｂの刃先Ｂａを固定刃Ａの刃先Ａａに沿って摺動させることにより、固定刃Ａの刃先Ａａと可動刃Ｂの刃先Ｂａとの間に供給される用紙Ｓを切断するものである。固定刃Ａの一端１１は基台１０の一方側ブラケット１２の下側に固定され、固定刃Ａの他端１３は基台１０の他方側ブラケット１４の下側に固定されている。また、図５に示すように、固定刃Ａは、用紙Ｓが固定刃Ａの刃先Ａａより上位の位置から斜めに固定刃Ａの刃先Ａａ上に供給されるように、プラテン１の用紙Ｓの排出位置に対して下位の位置に位置させられており、用紙Ｓが可動刃Ｂの固定刃Ａに対する摺動方向に対して直角方向に供給される所謂フラットパスではなく、用紙Ｓは可動刃Ｂの固定刃Ａに対する摺動方向に対して斜めになって供給される。　
実施の形態に係る用紙切断装置Ｔは、図１及至図３に示すように、可動刃Ｂを、固定刃Ａの刃先Ａａに対して可動刃Ｂの刃先Ｂａを開いて供給される用紙Ｓを受け入れる開位置Ｘ（図３（ａ））から移動させ再び開位置Ｘに位置させる移動機構２０を備えている。移動機構２０は、可動刃Ｂの一端部１５を支持する第１リンク２１と、可動刃Ｂの他端部１６を支持する第２リンク２２とを備えている。第１リンク２１は、２枚の板を複数の連結杆２３で連結した部材であり、固定刃Ａの一端１１側の基台１０である一方側ブラケット１２の上側に、固定刃Ａの刃先Ａａに沿う方向に直交する方向の軸２４を中心に揺動可能に設けられている。第２リンク２２は２枚のＬ字状部材を後述の支持軸２８を介して連結された部材であり、固定刃Ａの他端１３側の基台１０である他方側ブラケット１４の上側に、固定刃Ａの刃先Ａａに沿う方向に直交する方向の軸２５を中心に揺動可能に設けられている。　
また、移動機構２０において、可動刃Ｂの両端部１５，１６には、夫々、可動刃Ｂの刃先Ｂａに沿う方向の軸線を有した回動軸２６が設けられており、各回動軸２６は、これらに対応する第１リンク２１及び第２リンク２２に回動可能に軸支されている。可動刃Ｂの一端部１５側の回動軸２６は、第１リンク２１の２枚の板間に架設された支持軸２７に軸支されている。支持軸２７は、固定刃Ａの刃先Ａａに沿う方向に直交する方向の軸線を中心に回動可能に第１リンク２１に設けられている。可動刃Ｂの他端部１６側の回動軸２６は、第２リンク２２の２枚の板間に架設された支持軸２８に軸支されている。支持軸２８は、固定刃Ａの刃先Ａａに沿う方向に直交する方向の軸線を中心に回動可能に第２リンク２２に設けられている。　
更に、移動機構２０において、第１リンク２１及び第２リンク２２の少なくともいずれか一方（実施の形態では第１リンク２１）を揺動駆動する駆動部３０を備えている。図１及び図２に示すように、駆動部３０は、一方側ブラケット１２を外側に設けられた電動モータ３１を備えている。電動モータ３１の回転軸３１ａには回転軸３１ａに対して公転する偏心軸３２が設けられており、この偏心軸３２は第１リンク２１の一方の板に形成したクランク溝３３に係合しており、第１リンク２１は、電動モータ３１の回転軸３１ａの回転により偏心軸３２を介しクランク溝３３を通して揺動させられる。図３に示すように、この第１リンク２１の揺動により、可動刃Ｂを介して第２リンク２２も揺動し、この第１リンク２１と第２リンク２２との揺動により、可動刃Ｂは、上記の開位置Ｘから移動させられて所謂鋏み切り動作を行って再び開位置Ｘに位置させられる。即ち、可動刃Ｂは、所定の軌跡に沿って循環移動させられ、可動刃Ｂの刃先Ｂａが固定刃Ａの刃先Ａａに沿って摺動する際には、図４（ａ）に示すように、可動刃Ｂの刃先Ｂａが固定刃Ａの刃先Ａａに対して一点で交差するように移動させられる。　
また、実施の形態に係る用紙切断装置Ｔは、可動刃Ｂの刃先Ｂａが固定刃Ａの刃先Ａａに対して摺動するように、可動刃Ｂを固定刃Ａ側に付勢する付勢機構３５を備えている。付勢機構３５は、第１リンク２１及び第２リンク２２の少なくともいずれか一方（実施の形態では両方）において、対応するリンク２１，２２と可動刃Ｂとの間に設けられ、可動刃Ｂを固定刃Ａ側に付勢するコイルスプリング３６で構成されている。図３，図４及び図６に示すように、コイルスプリング３６は、回動軸２６に挿通され一端がリンク２１，２２に係止させられ他端が可動刃Ｂに係止させられている。　
そして、実施の形態に係る用紙切断装置Ｔは、図２，図３及び図６に示すように、可動刃Ｂによる用紙Ｓの切断後に可動刃Ｂが開位置Ｘに至る過程で、可動刃Ｂを付勢機構３５の付勢力に抗して固定刃Ａから離間させる離間機構４０を備えている。離間機構４０は、固定刃Ａの一端１１側で電動モータ３１とは反対側の面に設けられたカム４１と、可動刃Ｂの一端に設けられカム４１に接触するカムフォロア４２とを備えて構成されている。カムフォロア４２は、カム４１のカム面を転動し可動刃Ｂの刃先Ｂａに沿う方向の軸に回転自在に軸支された転動体としてのローラで構成されている。　
カム４１のカム面は、縦長になっており、可動刃Ｂの刃先Ｂａが固定刃Ａの刃先Ａａに対して摺接するようにカムフォロア４２をガイドする下側の第１ガイド面４３と、可動刃Ｂの用紙Ｓの切断終了後可動刃Ｂが開位置Ｘに至る際カムフォロア４２を付勢機構３５の付勢力に抗して持ち上げる上側の第２ガイド面４４とを備えて構成されている。　
従って、この実施の形態に係る用紙切断装置Ｔを搭載したプリンタにより、ラベルを作成するときは、ラベル用紙Ｓを搬送して、図５に示すように、先に、プラテン１上でサーマルヘッド２により印字が行われ、その後、用紙Ｓはプラテン１から排出されて用紙切断装置Ｔの固定刃Ａの刃先Ａａより上位の位置から斜めに固定刃Ａ上に供給される。　用紙切断装置Ｔにおいては、移動機構２０により可動刃Ｂを開位置Ｘに位置させ、供給される用紙Ｓを固定刃Ａの刃先Ａａと可動刃Ｂの刃先Ｂａとの間に通過させて受け入れる（図６（１））。そして、移動機構２０により可動刃Ｂを開位置Ｘから移動させ、可動刃Ｂの刃先Ｂａを固定刃Ａ側の刃先に沿って摺動させ、所謂鋏み切り動作により、固定刃Ａの刃先Ａａと可動刃Ｂの刃先Ｂａとの間に供給された用紙Ｓを切断する（図６（２）（３））。可動刃Ｂによる用紙Ｓの切断期間中は、可動刃Ｂは付勢機構３５により可動刃Ｂの刃先Ｂａが固定刃Ａの刃先Ａａに対して摺動するように固定刃Ａ側に付勢されているので、切断が円滑に行われる。可動刃Ｂが移動機構２０により開位置Ｘから移動させられるときは、カムフォロア４２がカム４１にガイドされてその第２ガイド面４４から第１ガイド面４３に移動する。第１ガイド面４３では、可動刃Ｂの刃先Ｂａが固定刃Ａの刃先Ａａに対して摺接するようにガイドするので、可動刃Ｂによる用紙Ｓの切断が確実に行われる。この用紙切断装置Ｔにおいて切断されたラベルは、適宜、使用される。　
可動刃Ｂによる用紙Ｓの切断後は、移動機構２０により可動刃Ｂは開位置Ｘに至るが、その過程（図６（４））では、離間機構４０により、付勢機構３５の付勢力に抗して固定刃Ａから離間させられる。即ち、可動刃Ｂが開位置Ｘに至る過程では、カムフォロア４２はカム４１にガイドされてその第１ガイド面４３から第２ガイド面４４に移動し付勢機構３５の付勢力に抗して持ち上げられ、可動刃Ｂは固定刃Ａから離間させられる。この場合、カム４１とカムフォロア４２により、可動刃Ｂを動かすので、簡易な機構により動作を確実に行わせることができる。　この場合、図５及び図６（５）に示すように、可動刃Ｂの刃先Ｂａが次に供給される用紙Ｓの先端縁に干渉しようとしても、可動刃Ｂは固定刃Ａから離間させられるので、この用紙Ｓの先端縁を引っ掛けて持ち上げることが防止される。特に、可動刃Ｂの固定刃Ａに対する摺動方向に対して用紙Ｓが斜めになって供給される場合には、用紙Ｓの切断後にその先端縁が固定刃Ａの刃先Ａａより僅かに出っ張るが、可動刃Ｂは固定刃Ａから離間させられるので、用紙Ｓの先端縁が可動刃Ｂの刃先Ｂａの移動経路に干渉することがなく、そのため、引っ掛かってめくれ易くなる事態が防止される。また、特に、糊付けされているラベル用紙Ｓの場合でも、同様に、可動刃Ｂは固定刃Ａから離間させられるので、可動刃Ｂの刃先Ｂａに用紙Ｓの糊が付着し、引っ掛かってめくれ易くなる事態が防止される。　
そして、再び可動刃Ｂの開位置Ｘにおいて、プラテン１側から供給される次の用紙Ｓを固定刃Ａの刃先Ａａと可動刃Ｂの刃先Ｂａとの間に通過させて受け入れる（図６（５））。この場合、用紙Ｓの先端縁が可動刃Ｂの刃先Ｂａに引っ掛かってめくれる事態が防止されているので、用紙Ｓが確実に刃先間を通過することができ、用紙Ｓ折れを生じたりジャムを生じる事態が防止される。　
尚、上記実施の形態においては、本装置を一方面に糊が付着したラベル用紙Ｓに印刷を行うプリンタに搭載した場合で説明したが、必ずしもこれに限定されるものではなく、記録誌等の用紙Ｓに印刷を行う別のタイプのプリンタに設けても良く、また、プリンタに限らず、用紙Ｓを取り扱う種々の装置に設けても良く、あるいは、単独の用紙切断装置Ｔであっても良く、適宜変更してよいことは勿論である。
Ｔ　用紙切断装置　Ｓ　用紙　１　プラテン　２　サーマルヘッド１０　基台１２　一方側ブラケット１４　他方側ブラケット　Ａ　固定刃Ａａ　固定刃の刃先　Ｂ　可動刃Ｂａ　可動刃の刃先　Ｘ　開位置２０　移動機構２１　第１リンク２２　第２リンク２４　軸２５　軸２６　回動軸２７　支持軸２８　支持軸３０　駆動部３１　電動モータ３２　偏心軸３３　クランク溝３５　付勢機構３６　コイルスプリング４０　離間機構４１　カム４２　カムフォロア４３　第１ガイド面４４　第２ガイド面

Claims (4)

  1. 基台に設けられた固定刃に向けて可動刃を移動させ該可動刃の刃先を上記固定刃の刃先に沿って摺動させることにより上記固定刃の刃先と可動刃の刃先との間に供給される用紙を切断する用紙切断装置において、　上記可動刃を上記固定刃の刃先に対して該可動刃の刃先を開いて上記供給される用紙を受け入れる開位置から移動させ再び開位置に位置させる移動機構と、上記可動刃の刃先が上記固定刃の刃先に対して摺動するように該可動刃を固定刃側に付勢する付勢機構と、上記可動刃による用紙の切断後に該可動刃が上記開位置に至る過程で該可動刃を上記付勢機構の付勢力に抗して上記固定刃から離間させる離間機構と備えたことを特徴とする用紙切断装置。
  2. 上記離間機構を、上記固定刃側に設けられたカムと、上記可動刃側に設けられ上記カムに接触するカムフォロアとを備えて構成し、上記カムのカム面を、上記可動刃の刃先が上記固定刃の刃先に対して摺接するように上記カムフォロアをガイドする第１ガイド面と、上記可動刃の用紙の切断終了後該可動刃が開位置に至る際上記カムフォロアを上記付勢機構の付勢力に抗して持ち上げる第２ガイド面とを備えて構成したことを特徴とする請求項１記載の用紙切断装置。
  3. 上記カムフォロアを、上記カムのカム面を転動する転動体で構成したことを特徴とする請求項２記載の用紙切断装置。
  4. 上記移動機構を、上記固定刃の一端側の基台に該固定刃の刃先に沿う方向に直交する方向の軸を中心に揺動可能に設けられ上記可動刃の一端部を支持する第１リンクと、上記固定刃の他端側の基台に該固定刃の刃先に沿う方向に直交する方向の軸を中心に揺動可能に設けられ上記可動刃の他端部を支持する第２リンクとを備え、上記可動刃の両端部に夫々該可動刃の刃先に沿う方向の軸線を有した回動軸を設け、該各回動軸を対応する第１リンク及び第２リンクに回動可能に軸支し、上記第１リンク及び第２リンクの少なくともいずれか一方を揺動駆動する駆動部を設けて構成し、　上記付勢機構を、上記第１リンク及び第２リンクの少なくともいずれか一方において、対応するリンクと上記可動刃との間に設けられ該可動刃を上記固定刃
    側に付勢するスプリングで構成したことを特徴とする請求項１乃至３何れかに記載の用紙切断装置。
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US20130276609A1 (en) 2013-10-24
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EP2660017B1 (en) 2016-03-09
US9089985B2 (en) 2015-07-28
EP2660017A4 (en) 2014-06-25
JP5804701B2 (ja) 2015-11-04

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