JP2007083378A - Paper sheet cutting and separating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cut paper fixing method of preventing cutting position misalignment by preventing the occurrence of paper bend due to paper cutting resistance, and a paper sheet cutting method for preventing paper feed quantity error. <P>SOLUTION: Paper is fixed between a blade tip and a blade receptacle immediately before cutting, and cutting is carried out as it is by further pressurizing. A cutting tool of a discontinuous blade tip is used to cut a paper sheet discontinuously and selectively in the paper width direction, and it is fed downstream, leaving uncut parts. It is completely cut and separated by means of a sheet longitudinal direction cutting device (slitter blade or the like) disposed on the downstream side. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    In the present invention, a sheet is cut and fed in two directions, a direction crossing the sheet feeding direction (hereinafter referred to as a sheet feeding lateral direction) or a sheet feeding direction (hereinafter referred to as a sheet feeding longitudinal direction). For a device that obtains a cut sheet with a size different from the size of the sheet, or a sheet that is divided into a plurality of sheets, the occurrence of misalignment in the cutting direction in the feed direction is eliminated, and the feed amount error in the feed direction The present invention relates to a sheet cutting / separating apparatus that can obtain a cutting paper having excellent dimensional accuracy.

    In the prior art, a shear cutting mechanism (guillotine cutting machine, rotary cutter, etc.) belonging to the scissors is used exclusively for cutting in the lateral direction of the paper feed. As shown, the receiving blade 2 is disposed in parallel with the paper 1 and the upper blade 3 is disposed at an angle to the paper 1, and the cutting edge of the receiving blade 2 and the cutting edge of the upper blade 3 are in contact with each other. Point contact is made by the pressurization, and the contact point 4 of the blade edge moves on the paper by the vertical movement of the upper blade 3 to cut the paper. Further, in the shear cutting mechanism, it is necessary for the contact point 4 of the blade edge to reciprocate once in the range of the cutting width wider than the paper width at the time of paper cutting, and the paper is always cut before and after the cutting mechanism by cutting.

    Since the contact point 4 of the blade edge gradually cuts the paper 1 while moving laterally on the paper, the cutting point of the paper becomes the contact point of the blade edge by the cutting resistance between the contact point 4 of the blade edge and the paper. 4 is pushed in the moving direction, and there is a possibility that the paper is bent during cutting and the cutting position is shifted.

    A mechanism to fix the paper position during paper cutting is required to prevent the occurrence of paper bending due to paper cutting resistance and to prevent the cutting position deviation, but due to the dimensional relationship before and after the cutting mechanism, the distance from the cutting mechanism is short. In this case, there is a limit to fixing the sheet, and a practical lower limit value is generated in the cutting length that can prevent the cutting position shift.

    Due to the structure of the shear cutting mechanism, the cutting edges of the receiving blade 2 and the upper blade 3 must always be in point contact with the contact pressure between them, and the cutting in the lateral direction of the paper feed is stopped or started halfway. However, since cutting cannot be performed discontinuously / selectively, the paper is cut back and forth in the paper feed direction by cutting, and if the paper is to be cut continuously, it is necessary to pick it up again with the paper transport roller on the downstream side of the cutting mechanism There was a risk of errors in the paper feed amount.

    The present invention has been made in view of the above points, and a new cutting paper fixing method for preventing paper cutting position deviation, and cutting and cutting of a sheet that may cause an error in the paper feed amount. Provide a cutting method to prevent

    In the present invention, when cutting a sheet in the paper feeding lateral direction, the sheet is sandwiched between the cutting edge of the cutting blade and a smooth surface that receives the cutting edge, and the sheet is fixed in a fixed position. It is characterized in that the occurrence of cutting position deviation is eliminated by pressure cutting the leaf paper.

    In particular, using a blade with a discontinuous cutting edge, cutting the paper sheet laterally in a discontinuous / selective manner, leaving the uncut portion in the cut portion of the sheet, and cutting or dividing the sheet. This is characterized in that the occurrence of a paper feed amount error caused by changing the paper transport roller is eliminated.

    Furthermore, the sheet is fed without being cut by the cutting mechanism, and is fed vertically by a sheet feeding vertical cutting device (such as a slitter blade) disposed downstream of the sheet feeding horizontal cutting mechanism. It is characterized in that the cutting and dividing of the sheet can be completed at the position of the direction cutting device.

    As described above, in the present invention, the sheet is cut in the lateral direction in the paper feeding direction after the sheet is sandwiched between the blade edge of the blade and the smooth surface and is fixed by pressure. The paper fixing mechanism for preventing misalignment could be omitted. In addition, the sheet cutting in the lateral direction of the sheet feeding is discontinuous / selective, eliminating the cutting of the paper in the cutting mechanism, and eliminating the occurrence of paper feed amount errors due to re-setting by the paper feed roller on the downstream side of the cutting mechanism, In addition, the sheet cutting and division can be completed in a lump by the subsequent sheet cutting in the vertical direction.

    Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows an example of a sheet feeding lateral cutting and dividing apparatus according to the present invention. The cutting and dividing apparatus includes a sheet feeding mechanism that determines a sheet feeding amount (cutting length) and a cutting mechanism that cuts a sheet in a lateral direction of sheet feeding. The sheet feeding mechanism can be composed of a pair of sheet feeding rollers 5 for measuring and feeding the cutting length, and the sheet cutting mechanism includes a cutting blade 6 having a sharp cutting edge and It is constituted by a smooth surface 7 that receives the cutting edge of the cutting blade.

    FIG. 3 shows a state where the sheet 1 is fixed in position by a gap between the cutting edge of the cutting blade 6 and the smooth surface 7. The cutting edge 6 of the cutting blade 6 and the smooth surface 7 are arranged in parallel, and the gap is narrowed by the movement of either the cutting blade 6 or the smooth surface 7 or both. In this state, the sheet 1 is fixed by the gap between the paper feed roller 5 and the cutting edge of the cutting blade 6 and the smooth surface 7, and the sheet 1 cannot be moved and deformed until the cutting is completed, and the cutting position is shifted. It does not occur.

    FIG. 4 shows a state where the paper 1 is cut and divided by further pressurization on the smooth surface 7 of the cutting blade 6 and the cutting edge of the cutting blade 6 is in contact with the smooth surface 7. It is obvious that the cutting length (X) of the cut paper 8 cut and divided in this process can be arbitrarily set according to the feed amount of the paper 1.

    The length (Y) of the sheet cutting residual paper (10) cannot be less than the distance (A) between the nip position of the paper feed roller 5 and the cutting edge position of the cutting blade 6 for the purpose of fixing the paper. . However, as shown in FIG. 5, by adding a cutting paper transport roller 9 on the downstream side of the cutting blade 6, the cutting length immediately before the end of the sheet becomes the cutting edge position of the cutting blade 6 and the cutting paper. If the distance (B) between the conveyance roller 9 and the nip position is longer than the distance (B), the length (Y) of the sheet cutting residual paper (10) can be arbitrarily set.

    In the first embodiment, a cutting blade 6 having a width wider than the full width in the sheet feeding lateral direction of the sheet is used to obtain a cutting sheet having an arbitrary cutting length in the sheet feeding vertical direction without changing the width in the sheet feeding lateral direction. The leaf paper cutting and dividing apparatus is illustrated. In the second embodiment, the cutting blade 11 having a cutting edge width narrower than the full width in the sheet feeding lateral direction of the sheet is used, and the sheet in which the sheet feeding lateral width and the sheet feeding longitudinal cutting length are fed. 1 illustrates a sheet cutting and dividing apparatus that obtains cutting paper having different dimensions.

    FIG. 6 shows a state in which a cutting blade 11 having a cutting edge width narrower than the full width in the paper feeding lateral direction is used, and a cut 12 for cutting and dividing is provided near the center of the full width of the fed sheet. In this state, the both ends in the sheet feeding lateral direction are not cut off, and are continuously fed to the cutting paper transport roller 9 on the downstream side of the cutting mechanism, and the sheet feed amount (cutting length) of the paper by changing the roller is changed. Errors are eliminated. FIG. 7 shows a state of a sheet obtained by processing the cut and dividing cut 12 by the apparatus shown in FIG.

    FIG. 8 shows a state in which a paper feed vertical cutting device 13 such as a slitter blade is mounted on the paper feed roller 9 shown in FIG. 6 in order to provide a cutting function in the paper feed vertical direction. When the sheet with the cuts 12 for cutting and dividing shown in FIG. 7 processed is cut by the paper feed vertical cutting device 13 at the position of the cutting line 15, the sheet is cut at the vertical cutting position 14 as shown in FIG. Divided into cut sheets of set dimensions.

    8 and 9, only one cutting example is shown in the sheet feeding direction, but it is also possible to perform division cutting into two or more. In this case, the cutting blade used for cutting in the lateral direction of the paper feed is formed by arranging a plurality of cutting blades at intervals as shown in FIG. 10, or one cutting blade as shown in FIG. The cutting edge 16 can be provided with a deletion portion 16 for use.

  Cutting method in the lateral direction of paper feeding according to the prior art   Sheet-feeding lateral cutting and dividing apparatus according to the present invention   The paper position is fixed by the gap between the cutting edge of the cutting tool and the smooth surface.   Cutting and splitting of paper by the cutting edge and smooth surface of the cutting blade   Arbitrary setting method of sheet end cutting length by adding cutting paper transport roller   Cutting division cuts with a cutting blade whose blade width is narrower than the full width in the feed direction   Processing state of cuts for cutting and dividing sheets   Added vertical paper cutting function   Cutting paper split by cutting the cut sheet for cutting and dividing   Multi-piece cutting blade using multiple cutting blades   Multi-part cutting blade with part of the cutting edge deleted

Explanation of symbols

1. Cutting paper 2. 2. Cutting blade for shear cutting mechanism used in the prior art 3. Upper blade for shear cutting mechanism used in the prior art 4. Contact point of the cutting edge in the prior art shear cutting mechanism Sheet feed roller 6. 6. Cutting blade of the present invention 7. Smooth surface for receiving the cutting edge of the cutting blade of the present invention. 8. Paper to be cut and cut according to the present invention Cutting paper transport roller 10. 10. Sheet cut paper remaining 11. Cutting blade with cutting edge width narrower than the full width in the lateral direction of the paper feed 12. Cut for cutting and dividing Feeding direction cutting device 14. Feeding direction cutting position 15. Cutting line 16. Deleted part of the cutting edge of the cutting tool

Claims (2)

  In a device that cuts and divides a sheet in a direction transverse to the paper feeding direction, the sheet is fixed with the position of the sheet fixed by sandwiching the sheet between the cutting edge of the cutting blade and the smooth surface that receives the cutting edge. A sheet cutting and dividing apparatus characterized in that pressure cutting of paper is performed and occurrence of a cutting position deviation is eliminated.   In an apparatus that cuts and divides a sheet in two directions, ie, a feeding direction and a direction crossing the sheet feeding direction, the cutting edge of the blade that cuts in the direction crossing the feeding direction is discontinuous, and the sheet is discontinuously / selectively By cutting, the sheet is fed without being cut in the cutting process, and an error in the paper feed amount (cutting length) due to the change of the paper feed roller after the cutting is eliminated, and the following paper feed A sheet cutting and dividing apparatus characterized in that the sheet cutting and dividing can be completed at a directional cutting mechanism position.

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