JP2008229819A - Cutter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein cut defects or uncuttable situations are generated in thin recording paper and low rigid recording paper, since a blade of an inclined cutter pushes down the recording paper in a lower direction when cutting the recording paper and the recording paper enters into a groove, while being warped, just before the cutting. <P>SOLUTION: A guide member holding the front of a cutter sliding direction and a lower surface of the recording paper is disposed in a cutter unit, and is made movable by synchronizing with the cutter unit. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a recording paper cutting device, and more particularly, to a movable blade cutter device for cutting thermal paper, plain paper, electrostatic recording paper, and the like wound in a roll shape by a printer and a facsimile into a standard size.

  A conventional recording paper cutting device using a round blade cutter has a cutter unit driving means placed in the lateral direction of the recording paper and a runner base that is flush with a plate-like fixed blade having a plane parallel to the driving means. And a rotating roller that rolls on the runner base when moved by this drive, a circular rotating blade that is integrally coupled with the rotating roller, and the fixed blade.

  Then, when the main body of the cutter unit is moved by the driving means, the rotating roller rolls on the runner base, and the recording paper is sandwiched between the circular rotating blade coupled to the rotating roller and the fixed blade, and the same action as the scissors. As a result, the recording paper is cut. This circular rotary blade also has the effect of rotating and scraping the recording paper, and the blade for cutting the recording paper always moves, so that a long life can be achieved.

  Further, as a similar technique, a tool post that travels along the tool post guide is provided, the tool post is rotatably supported by the round blade, and the cutting edge of the round blade is a fixed blade provided in parallel to the tool post guide. It is a vapor cutter that overlaps and rotates slightly beyond the cutting edge of the fixed blade when the turret travels.The turret drive wires are stopped at both ends of the turret travel direction, and the turret drive wires are looped. The turret wire is fixed to the shaft support of the round blade and wound around the outer periphery of the pulley that rotates together with the round blade at least once, stretched with a predetermined tension, and in conjunction with the travel of the turret A round blade is made to rotate.

The cutting method by moving the flat blade, which is called a flat blade cutter, is inexpensive because it does not have a rotating mechanism, but the blade does not move relative to the cutting portion of the recording paper, so it is locally worn and the recording paper As a countermeasure against this, there has been proposed a method of mounting the movable blade so that it is driven to be inclined with respect to the fixed blade.
Japanese Utility Model Publication No. 3-44589 (Fig. 1)

  However, in the case of a round blade cutter or a flat blade cutter, a groove for escaping the cutter blade is essential on the lower surface of the cutter sliding area, and when cutting the recording paper, the inclined cutter blade pushes the recording paper downward, Immediately before cutting, the recording paper enters into the groove while being bent, and a thin recording paper or a recording paper with low stiffness has caused a situation in which cutting failure or inability to cut occurs. Also, depending on the environment, the hardness of the paper other than the recording paper may be lowered and may enter the groove.

  In view of the above problems, in the present invention, the cutter unit is provided with a guide member that holds the lower surface of the recording paper in front of the cutter sliding direction of the cutter unit having a blade that cuts continuous recording paper in the width direction. By moving in synchronization with the cutter unit, the recording paper can be cut without being dropped downward when cut by the cutter.

  As described above, in the present invention, the cutter unit is provided with a guide member that holds the lower surface of the recording paper in front of the cutter sliding direction of the cutter unit having a blade that cuts continuous recording paper in the width direction. However, by combining it with the cutter unit, the recording paper will not be pushed down by the pressure of the blade during cutting in various recording environments, such as thin recording paper, low basis weight recording paper, and various environments. It was possible to reliably hit and to cut.

  In view of the present invention, embodiments will be described in detail.

  FIG. 1 is a cross-sectional view of the cutter unit of the first embodiment, and FIG. 2 is an enlarged view of the cutter unit. In the figure, reference numeral 1 denotes a cutter blade, and 2 denotes a blade surface, which are fixed to the cutter housing 6 via a damper or the like. A cutter housing 6 is movably disposed on the rail 7 via a driving device (not shown). Normally, the cutter housing 6 is waiting outside the width of the recording paper, and the recording paper is transported to a predetermined position and stopped, the cutter housing 6 moves on the rail 7 and cuts the recording paper. Stops on the opposite side of the paper and enters a standby state. Further, the cut recording paper falls into the basket due to its own weight, and is taken out by the user.

  FIG. 2 shows an enlarged view of the cutter unit. This figure shows a state in which the cutter unit has reached the end surface of the recording paper 10. In the drawing, the sheet passing surface 8 is fixed to the printer engine side (also called a platen), and the recording sheet 10 is conveyed thereon.

  In the present invention, the stage 3 having the surface 4 for holding the recording paper 10 immediately before the recording paper reaches the blade surface, in other words, in front of the sliding direction of the blade 1 and the blade surface 2 of the cutter is a cutter housing 6. And is movable in synchronization with the cutter housing 6. Further, the surface 4 provided at the front end of the stage 3 is disposed in the same state as the paper passing surface 8 or with a slight step, and slides in the groove 9 provided in the paper passing surface 8. is there.

  The recording paper 10 conveyed on the paper passing surface 8 has a configuration in which the bottom surface of the recording paper 10 is held by the surface 4 provided on the stage 3, so that the blade surface 2 hits the recording paper 10 at the time of cutting. Even if the paper 10 is pushed downward, it can be prevented from entering the groove 9.

  Further, the stage 3 and the surface 4 fixed to the cutter housing 6 are formed of a thickness member that is slightly smaller than the groove 9. Since only the pressing pressure of the cutter blade 1 is applied to the surface 4, the strength of the stage 3 is not so required.

  3 shows a perspective view of the cutter unit, and FIG. 4 shows a cross-sectional view of the cutter unit.

  A sheet passing surface 8 fixed to a main body (not shown) is provided with a groove 9 that is wider than the cutter blade 1. The cutter blade 1 and the arm 5 enter the groove 9. The cutter housing 6 moves so that the cutter blade 1 and the arm 5 move in the groove 9. Here, the end of the surface 4 has an R shape so as not to be caught by the recording paper when the cutter housing 6 moves.

  In the first embodiment, the height of the surface 4 provided on the arm 5 is the same as or slightly different from that of the paper passing surface 8, but in the second embodiment, the height of the surface 4, In addition, by adopting a structure in which the angle can be varied, a form in which the cutting angle can be improved by changing the entry angle of the recording paper 10 with respect to the blade surface 2 is proposed. In addition, the cutter housing 6 and the arm 5 are fixed, but in the second embodiment, the cutter housing 6 and the arm 5 are separated and provide a form in which the arm 5 and the surface 4 move using another driving source.

Cross section of cutter unit Enlarged view of the cutter unit Perspective view of cutter Cross section of cutter

Explanation of symbols

1 Cutter Blade 2 Blade Surface 3 Stage 4 Surface 5 Arm 6 Cutter Housing 7 Rail 8 Paper Passing Surface 9 Groove 10 Recording Paper

Claims (5)

  In a cutter device having a cutter unit driving means placed in the lateral direction of the recording paper and a blade for cutting the continuous recording paper in the width direction, the cutter unit is arranged to hold the front of the recording paper and the lower surface of the recording paper. A cutter apparatus characterized by having a stage provided.   2. The cutter apparatus according to claim 1, wherein the stage is fixed to a cutter movable unit.   3. The cutter apparatus according to claim 1, further comprising means for changing the height of the stage according to a medium.   4. The cutter apparatus according to claim 1, further comprising means for changing the angle of the stage according to a medium.   5. The cutter apparatus according to claim 1, wherein the stage is slid by a separate driving means without being synchronized with the cutter apparatus.

Images