JP2006015470A - Sheet material cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet material cutting device capable of obtaining cut products of excellent cut quality by leading out an edge formed of the edge of a sheet material, in a fixed direction without interfering or mixing with the cut products when cutting or after cutting the sheet material in a sheet material cutting device followed by edge cutting. <P>SOLUTION: This sheet material cutting device cuts the sheet material by the cooperation of a rotationally driven first round cutting edge group and a second round cutting edge group journaled, with cutting edge tips disposed to come in pressure contact with cutting edge tips of round cutting edges of the first round cutting edge group. The sheet material cutting device is provided with a guide for leading out the edge formed of the edge of the sheet material, in the fixed direction, and a guide roller for supporting the edge formed of the edge of the sheet material. The sheet material cutting device may be provided with a guide for leading out edges formed between adjacent strips, in the fixed direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sheet material cutting device for cutting a standard paper such as A4 or A3 size into business cards, postcards, flyers, tickets, etc., or a sheet material cutting device for trimming photographic paper, etc. It is.

When a sheet material is cut by a group of round blades, burrs and squeezing may be accompanied at the cut end of the cut and formed strip (hereinafter referred to as a cut product). If the cut product is accompanied by burrs or crisp spots, for example, aligning the direction of the burrs or pelvis toward the back side of the cut product will improve the appearance and shape of the cut product, and ensure stable cutting. You can get a product.
Conventionally, there has been a sheet material cutting device that cuts a sheet material without cutting it off. However, the direction of burrs and sharp edges generated at the cut end of the cut product is not only on the back side but also on the front side of the cut product. Therefore, it was not preferred because the cut product looked bad and the form was uneven. In view of this, a sheet material cutting device has been proposed in which the direction of burrs and gaps generated at the cut end of the cut product is aligned, for example, toward the back side of the cut product to cut the dough into a cut product.
The sheet material cutting device that cuts the dove into a cut product includes a cutting device having a configuration in which a group of round blades are arranged so that the cut product and the dove are alternately arranged on one side of the sheet material, or a sheet material table. There is a cutting device having a configuration in which a group of round blades is arranged so that a cut product and a dove are alternately arranged on each side of the back surface, and a pair of round blades corresponding to the front and back of the sheet material are cut or cut.
In the above-mentioned sheet material cutting device with dove cutting, when cutting or after cutting the sheet material, the cut product and the dove are led out of the sheet material cutting device so that they do not interfere with each other, and dough is mixed in the cut product It is required to separate each other so that they do not.

  As a means for deriving a dove formed between adjacent strips after cutting a sheet material, for example, there is a slitter mechanism of a card cutter disclosed in Patent Document 1. This slitter mechanism has a mechanism in which a group of round blades is arranged on each side of the sheet material to be cut, and the sheet material is cut by a pair of round blades (upper blade and lower blade) corresponding to the front and back surfaces of the sheet material. And a configuration in which a chipped piece with a sharp tip (hereinafter referred to as a dove drop) is provided between adjacent lower blades. With this configuration, the dove formed between the adjacent strips of the sheet material, that is, between the adjacent lower blades, is narrowed by creasing the dove with the sharpened tip of the dove drop, and the dove Can be derived in a different direction from the cut product. This means is excellent because interference or mixing between the cut product and the dove can be prevented with a simple configuration.

In addition, as a means for separating the dove formed at the end of the sheet material and the cut product, for example, a wedge-shaped separator disclosed in Patent Document 2 is disposed on the downstream side immediately after cutting the sheet material. There is a means for forcibly separating the dove by the separator, and there is an advantage that the cut product and the dove can be mechanically reliably separated.
Japanese Patent Laid-Open No. 10-146796 Japanese Utility Model Laid-Open No. 1-164090

  As described above, in the sheet material cutting device with dove cutting, when the cut dove interferes with the cut product when the sheet material is cut or after cutting, the ink on the printed surface of the cut product may be peeled off or the cut end surface It becomes a defect that impairs the product value, such as bending slightly. In addition, if the cut product and the dove are mixed after cutting, when the dove is separated and removed, the printed surface of the cut product may be damaged or soiled, or a paper passing trouble may occur inside the sheet material cutting device. Such a problem may occur. Further, in order to improve the yield of the sheet material, it is required to reduce the total amount of the doves as much as possible, that is, to cope with the narrowing of the doves.

For example, in the sheet material cutting device having the configuration disclosed in Patent Document 1, the above-described problem of interference or mixing between the cut product and the dove can be solved for the dove formed between adjacent strips. However, with respect to the dove formed at the end of the sheet material, it is difficult to exert its function because the dove escapes even if an attempt is made to crease the dove with the pointed tip of the dove dropping. Furthermore, for the above-mentioned narrowing of the dove, even if the dove is formed between adjacent strips, the dove is so deep that the dove drop can be pointed to the dove with a sharp tip. If the width cannot be secured, the above-mentioned problem of interference or mixing between the cut product and the dove may not be solved.
On the other hand, at the edge of the sheet material, for example, as in the sheet material cutting device having the configuration disclosed in Patent Document 2, by disposing a member such as the separator, the cut product and the dove can be separated. In some cases, the separator comes into contact with the end of the cut product to cause damage or deformation. And, in particular, in practical use, the problem is that at the end of the sheet material, the dove separated at one end is bent and relieved, so that it is caught from the center of the sheet material, causing contact interference with the cut product and the cut product. It was to damage or deform the printed surface and the cut edge.

  The object of the present invention is to lead the dove formed at the end of the sheet material in a certain direction without interfering with or mixed with the cut product at or after the cutting of the sheet material in the sheet material cutting apparatus with dove cutting, It is an object of the present invention to provide a sheet material cutting device capable of obtaining a cutting product with excellent cutting quality.

  The inventor observed and examined the behavior of the dove formed at the end of the sheet material during or after cutting the sheet material. For the dove formed at the end of the sheet material, by providing a guide roller for supporting the dove as well as a guide for correcting the dove lead-out direction, the dove will not bend and depend, and the dove is a cut product. The present inventors have found that it is possible to separate and derive in a certain direction without interfering with the present invention.

  That is, the present invention provides a first round blade group that is rotationally driven and a second round blade group in which the cutting edge is disposed so as to be in pressure contact with the cutting edge of the round blade of the first round blade group. Is a sheet material cutting device that cooperates to cut a sheet material, a guide for deriving a dove formed at the end of the sheet material in a certain direction, and a dove formed at the end of the sheet material Is a sheet material cutting device comprising a guide roller for supporting the sheet material.

  It is preferable that the diameter of the guide roller is equal to or larger than the diameter of the round blade of the first round blade group.

  The guide roller can also serve as a round blade of the first round blade group.

  The sheet material cutting device may further include a guide for guiding a dove formed between adjacent strips in a certain direction.

  ADVANTAGE OF THE INVENTION According to this invention, the dove formed in the edge part of a sheet | seat material at the time of the cutting | disconnection of a sheet | seat material, or further adjacent stripes, and also between adjacent stripes can be reliably derived | led-out to a fixed direction, without interfering or mixing. Therefore, the cut product can be prevented from being damaged or deformed due to interference or mixing of the cut product. For example, a cut product such as a business card, a postcard, a flyer, a ticket, or a trim product such as a photographic paper is good. Cutting quality can be secured.

One of the important features in the present invention is that a guide roller for supporting the dove formed at the end portion of the sheet material and a guide for correcting the lead-out direction of the dove are provided.
The inventor cannot deviate the dove formed at the end of the sheet material in a certain direction by deviating from the deriving path, that is, the dove is derived from the center of the sheet material, It was confirmed that one of the causes was the deflection of the dove that caused the bend behavior such as bending. In other words, in order to suppress as much as possible the behavior of meandering, bending, and tip wobbling when the dove is led out, the dove is supported by the guide roller so as not to bend, and a guide is provided to provide a dove leading path. The above-mentioned problem can be solved by making the direction constant and preventing the dove from deviating from the derived route.
In the present invention, since the dove formed at the end of the sheet material is supported by the guide roller, the dove is led out without bending, and the track is changed in a direction different from the lead-out direction of the cut product along the guide. Can be derived. In other words, unlike the conventional sheet material cutting device, the dove does not have to be deformed narrowly, and it is not necessary to provide such a separator that contacts the cut end of the cut product for separating the dove. It has a completely new configuration.

A basic configuration relating to cutting according to the present invention is a sheet material cutting device in which a first round blade group and a second round blade group cooperate to cut a sheet material.
The first round blade group is preferably arranged at a predetermined interval at which a cut product can be formed and can be driven to rotate. For example, a driving shaft is provided on the front side or the back side of the sheet material, the first round blade group is disposed on the driving shaft at a predetermined interval, and the driving shaft is connected to a driving source such as a motor. The first round blade group can be driven to rotate.
The second round blade group is disposed so that the blade edge of the round blade is in pressure contact with the blade edge of the round blade of the first circle blade group, and is pivotally supported to be rotatable. However, this improves the cutting quality.

Important elements in the present invention are a guide roller and a guide.
The guide roller need not be rotated, but when the guide roller supports and contacts the dove, a resistance force opposite to the direction led out acts on the dove. Therefore, in order to derive the dove more stably, it is preferable to make the resistance force as small as possible, or to generate the resistance force in the same direction as the direction in which the dove is derived. That is, it is preferable to rotate the guide roller so as to be equal to or larger than the dove drawing speed. For example, the diameter of the guide roller is equal to or larger than the diameter of the round blade of the first round blade group. It is preferable to do.

In the present invention, the second round blade group can be driven to rotate by the rotational drive of the first round blade group by press-contacting the blade edges of the second round blade group. it can. Alternatively, the second round blade group may be rotationally driven by a driving force of a driving source. The pressure contact of the blade edge of the second round blade group may be pressed by an elastic member such as a coil spring, or the round blade of the second round blade group is made flexible by providing flexibility. You may press using. Further, it can be pivotally supported by providing a rotary shaft on the round blade of the second round blade group. For example, a rotary shaft may be provided for each round blade of the second round blade group, or each round blade of the second round blade group that is pressed against one round blade of the first round blade group. A rotating shaft may be provided. Alternatively, a rotation shaft can be provided for some of the second round blade groups, or a rotation shaft can be provided through all the second round blade groups.
Further, in the drive shaft for fixing the first round blade group, depending on the width of the sheet material, reinforcement such as supporting an intermediate portion of the drive shaft is ensured, thereby ensuring a better cutting quality. can do.

In FIG. 5, the example about the guide roller of this invention is shown. The guide roller can be a guide roller 24a having a diameter equivalent to the diameter of the round blade 5a of the first round blade group shown in FIG. Further, the guide roller 24c having a diameter larger than the diameter of the round blade 5a of the first round blade group shown in FIG. Further, the guide roller 24d may have a substantially frustoconical shape whose diameter increases toward the outside from the round blade 5a side of the first round blade group shown in FIG. 5 (c). The guide roller 24d shown in FIG. 5C is preferable because the leading direction of the dove can be led to the outside of the sheet material.
Further, the guide rollers 24a, 24c, and 24d may not be provided individually, but may also serve as the round blade 5a of the first round blade group at the end of the sheet material.

  The guide of the present invention can also be provided for a dove formed between adjacent strips, and the dove can be led out along the guide while changing the track in a direction different from the lead-out direction of the cut product. The guides may all have the same form, but it is preferable that the width of the guides is set to a predetermined width with respect to the width of each dove. In addition, it is preferable to dispose the guide so as to be inclined outward from the front or back surface of the sheet material from the vicinity of the cutting point of the sheet material because the dove can be led in a direction away from the cutting-out direction of the cut product. In addition, a smooth curve is formed in the guide, and the guide in which the smooth curve is formed can be guided to the outer circumference of the round blade of the first round blade group or the second round blade group. It is also preferable that the dove is led out along the smooth curve of the guide because the dove can be led out more stably.

The sheet material cutting device of the present invention can be configured such that the dove is dropped by its own weight, for example, so that the dove led out by the guide moves away from the cut product even after being separated from the guide. At this time, in order to make it easy to secure a space for mounting the guide, the apparatus configuration is more complicated than that of the second round blade group, which is likely to be complicated because the shaft is rotatably supported or pressed as described above. It is preferable that the first round blade group, which is easy to have a simple configuration, be disposed on the side where the dove falls by its own weight.
And in the sheet | seat material cutting device of this invention, the round blade of said 1st round blade group can also be made into the structure which carries out dove cutting with the width | variety substantially equivalent to the blade width as a cylindrical blade, for example, and said 2nd round blade. For example, the two round blades adjacent to each other in the blade group can be cut as a thin blade with a width substantially equal to the interval between the two round blades. In the configuration in which the dove can be cut with a width substantially equal to the width of the round blade of the first round blade group, the width of the dove formed by narrowing the blade width of the round blade of the first round blade group is as follows. This is preferable because it can be easily narrowed.

About the Example of this invention, the dimension of the width direction of the sheet | seat material of a cut product is 55 mm (width 55mm, length 91mm) using a commercially available sheet material (quality paper, width 317mm, length 470mm). ), The width of the dove by cutting the dove is 5 mm (the width of the dove at both ends of the sheet material is 11 mm), and the sheet material cutting device with 5 strips of the cut product is taken as an example. It explains using.
FIG. 1 is a block diagram showing an embodiment of the sheet material cutting device of the present invention. 2A is a cross-sectional view of the central portion of the apparatus, and FIG. 2B is a cross-sectional view of the end portion of the apparatus. Further, FIG. 3A shows the central part of the apparatus in a configuration in which a cylindrical driving round blade is adopted as the round blade of the first round blade group and a thin driven round blade is adopted as the round blade of the second round blade group. FIG. 3B is a configuration diagram of the end portion of the apparatus.

  In FIG. 1, the driving gear 3 and the driven gear 3 are fixed on the output shaft 45 of the motor 2 which is a driving source for cutting the sheet material, and the driving gear 3 and the driven gear 4 are appropriately connected. The meshing was performed with backlash secured. The drive shaft 1 is supported by ball bearings 6 provided on the side plates 25 and 26 attached to both ends of the lower frame 7, and the drive shaft 1 is rotatably disposed so that there is no backlash in the axial direction. The driving force of the motor 2 can be transmitted to the driving shaft 1.

  Next, as a round blade of the first round blade group, a cylindrical drive round blade 5 (material: tool steel, diameter of the blade edge 46: 20 mm, width of the blade edge 46: 5 mm, diameter of the flange 47: 15 mm, 6 widths (5a, 5b, 5c, 5d, 5e, 5f) were arranged on the drive shaft 1 at intervals of 55 mm. The driving round blade 5 was a cylindrical blade in accordance with the width of the dove being 5 mm, and the width of the blade edge 46 was 5 mm. Then, as shown in FIG. 3, the drive round blade 5 has its flange 47 fixed on the drive shaft 1 with a screw 36. Further, a dove (not shown) formed by a dove cut at the end of the sheet material is supported outside each of the drive round blades 5a and 5f arranged at both ends of the drive shaft 1, and the deflection of the dove is suppressed. Guide rollers 24a and 24b (material: polyacetal, maximum outer diameter: 20.3 mm, maximum outer diameter portion width: 5 mm) are arranged to prevent the guide rollers 24a and 24b from being driven at their flanges 59 with screws 58. 1 was fixed.

  As shown in FIG. 3, a thin driven blade 8 (material: high-speed tool steel, blade tip 53 circle diameter: 25 mm, blade width: 1 mm) is used as the circular blade of the second circular blade group. One end was integrally formed by caulking. The driven shaft 9 made of a thin blade is supported by bearing bushes 11a and 11b provided in a U-shaped housing in which the holding plate A13 and the holding plate B48 of the driven round blade 8 are combined, and the driven shaft 9 is freely rotatable. The holding plate B48 was fixed to the upper frame 14 with screws (not shown). A spring 10 is provided between the flange 50 of the driven shaft 9 and the holding plate A13 to press the blade edge 53 of the driven round blade 8 against the blade edge 46 of the drive round blade 5.

  Next, FIG. 4 shows a configuration diagram of the drive pinch roller 16 and the driven pinch roller 15. The drive pinch roller 16 is arranged and fixed at substantially the center of each of the drive round blades 5 arranged on the drive shaft 1. In addition, the driven pinch roller 15 is rotatably disposed on the roller shaft 17 so as to correspond to each drive pinch roller 16. The driving pinch roller 16 and the driven pinch roller 15 are used to clamp the sheet material or the cut product in cooperation with each other when the sheet material is cut or after cutting. In this embodiment, urethane rubber is used for the outer peripheral surface of the drive pinch roller 16 and polyacetal is used for the outer peripheral surface of the driven pinch roller 15 among materials having a large friction coefficient and hardly damaging the sheet material. The roller shaft 17 provided with the driven pinch roller 15 was supported so as to be slidable in the clamping direction through an elongated hole (not shown) of the bracket 22, and the bracket 22 was fixed to the upper frame 14. Further, a spring 20 and an urging plate 61 for pressing the roller shaft 17 in the clamping direction are provided, and the driven pinch roller 15 is urged to the driving pinch roller 16 via the roller shaft 17 (a clamping force of one place is 9.8 N). Configured to be possible.

  Further, the upper frame 14 is assembled to the side plates 25 and 26 attached to both ends of the lower frame 7 so that the cutting edge 53 of the driven round blade 8 is pressed against the cutting edge 46 of the driving round blade 5 (pressure contact force 8.8 N). Arranged. The driven round blade 8 is arranged so that the cutting edge 53 of the driven round blade 8 overlaps the cutting edge 46 of the driving round blade 5 by 0.3 mm to 0.9 mm, and the driven round blade 8 is centered with respect to the center of the driven round blade 5. The center of was shifted from 0.4 mm to 1.1 mm toward the sheet material insertion side.

  Then, as shown in FIG. 2, in order to guide the sheet material, insertion guides 14a and 7a are provided by bending on the sheet material insertion side of the upper frame 14 and the lower frame 7, and on the sheet material lead-out side. The lead-out guides 39 and 60 are fixedly disposed on the side plates 25 and 26. Further, a guide 23 (material: stainless steel, width: 4 mm, plate thickness: 1 mm) for deriving the formed dove in a certain direction is provided between the vicinity of the insertion guide 14a and the vicinity of the deriving guides 39, 60. The narrowest distance from the guide 23 is arranged and configured to be approximately 1 mm from the guide roller 24a at the end of the sheet material, and is arranged and configured to be approximately 1 mm from the driving round blade 5 between adjacent strips.

Next, a commercially available sheet material (quality paper, width 317 mm, length 470 mm) is inserted, and the sheet material is cut and cut with the sheet material cutting apparatus according to the embodiment of the present invention having the above-described configuration. A cut product (a strip having a width of 55 mm and a length of 470 mm) having a width corresponding to a business card of a strip was prepared.
In FIG. 2, a commercially available sheet material (not shown) on which the contents of a business card have been printed in advance at a predetermined position is placed on a sheet material conveyance unit (not shown), and the sheet material cutting apparatus according to an embodiment of the present invention. Inserted as shown by arrow 63. The inserted sheet material (not shown) reaches a position where the cutting edge 46 of the driving round blade 5 and the cutting edge 53 of the driven round blade 8 are in pressure contact (hereinafter referred to as a cutting position), and cutting is started. The strips were cut into strips in order of 11 mm, 55 mm, 5 mm, 55 mm, 5 mm, 55 mm, 5 mm, 55 mm, 5 mm, 55 mm, and 11 mm from the end. Here, a strip cut to a width of 55 mm is a cut product (not shown) having a width corresponding to a business card, and a strip cut to a width of 11 mm and a width of 5 mm is called a dove (not shown). Then, the cut product (not shown) and the dove (not shown) cut at the cutting position are led out along the outer periphery of the blade edge 53 of the driven round blade 8 and after reaching the drive pinch roller 16, the outer periphery thereof. And clamped by the drive pinch roller 16 and the driven pinch roller 15. Thereafter, the cut product (not shown) could be led out of the sheet material cutting device from between the lead-out guide 39 and the lead-out guide 60 as indicated by an arrow 64. Further, a dove (not shown) having a width of 11 mm cut at the end of the sheet material is also supported at the cutting position by the guide rollers 24a and 24b, and is indicated by an arrow 65 without causing or depending on the deflection. At this point, it was found that the sheet 23 abuts against the guide 23 and is led out toward the lower frame 7 along the guide 23 to confirm that the sheet material cutting apparatus can be stably led out. Further, a dove (not shown) having a width of 5 mm hits the guide 23 as indicated by an arrow 65, is led out toward the lower frame 7 along the guide 23, and can be led out of the sheet material cutting apparatus.
As described above, even if the sheet material is cut and cut with the sheet material cutting device according to the embodiment of the present invention, the cut product and the dove do not interfere with each other, and do not coexist. No damage or deformation was observed on the printed surface and the cut end surface.

It is a block diagram showing one Example in the sheet | seat material cutting device of this invention. It is sectional drawing showing the side surface of one Example in the sheet | seat material cutting device of this invention. It is a block diagram showing the round blade of the 1st round blade group of one Example in the sheet | seat material cutting device of this invention, and the round blade of a 2nd round blade group. It is a block diagram showing the drive pinch roller and driven pinch roller of one Example in the sheet | seat material cutting device of this invention. It is a figure showing some forms of the guide roller of this invention.

Explanation of symbols

1. Drive shaft, 2. Motor, 3. Drive gear, 4. Driven gear,
5, 5a, 5b, 5c, 5d, 5e, 5f. Driven round blade (round blade of the first round blade group),
6). Ball bearings, 7. Lower frame, 7a. Insertion guide,
8). 8. Driven round blade (round blade of the second round blade group), Driven shaft, 10. Spring,
11a, 11b. Bearing bush, 13. Holding plate A, 14. 14. Upper frame, 14a, insertion guide, Driven pinch roller, 16. Drive pinch roller, 17. Roller shaft,
20. Spring, 22. Brackets, 23. guide,
24a, 24b, 24c, 24d. Guide rollers 25, 26. Side plate, 36. screw,
39. Derivation guide, 45. Output shaft, 46. Cutting edge, 47. Flange, 48. Holding plate B,
50. Flange, 53, cutting edge, 58. Screws, 59. Flange, 60. Derivation guide,
61. Biasing plate, 63, 64, 65. Arrow

Claims (4)

  The first round blade group that is driven to rotate and the second round blade group that is pivotally supported and in which the cutting edge is disposed so as to be pressed against the cutting edge of the round blade of the first round blade group cooperate with each other. And a guide roller for supporting the dove formed at the end of the sheet material, and a guide roller for deriving the dove formed at the end of the sheet material in a certain direction. The sheet | seat material cutting device characterized by comprising.   The sheet material cutting device according to claim 1, wherein a diameter of the guide roller is equal to or larger than a diameter of the round blade of the first round blade group.   The sheet material cutting device according to claim 1, wherein the guide roller also serves as a round blade of the first round blade group.   The sheet material cutting device according to claim 1, further comprising a guide for deriving a dove formed between adjacent strips in a certain direction.

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