JPH11156798A - Die of sheet material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lengthen the service life of a horizontal punching edge and a vertical punching edge and perform sure punching by both of the punching edges by inclining the horizontal punching edge at a required angle and further setting the horizontal punching edge and the vertical punching edge at locations which do not interfere with a mounting hole of a die cylinder. SOLUTION: A horizontal punching edge 16a is inclined by substantially the same angle so that an end part A located at the side of an end part inclined to the side of upstream of a sheet feeding direction of a die cylinder 19 may be the preceding side of the revolving direction of the die cylinder 19. As a result, large stress is not applied to the die cylinder 19, an anvil cylinder and the horizontal punching edge 16a themselves because the horizontal punching edge 16a is gradually abutted on a sheet material 11. Because the horizontal punching edge 16a and a vertical punching edge 16b in a die 18 are faced at locations where the edges 16a and 16b do not interfere with a mounting hole of the die cylinder 19, each of the punching edge 16a, 16b is surely supported on the outer peripheral surface of the die cylinder 19 over the entire length. Therefore, sure punching by each punching edge 16a, 16b is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die for a sheet material, which is provided on a die cylinder of a punching device and performs punching of a required shape on a sheet material supplied between the die cylinder and an anvil cylinder. It is about.

[0002]

2. Description of the Related Art A punching apparatus is preferably used as a means for punching a sheet material such as a single sheet of corrugated cardboard sheet into a required shape and forming a blank or the like serving as a base material of a box that can be assembled and disassembled. I have. This punching device is provided with a die cylinder in which a die in which a punching blade of a required shape is implanted in a curved board is detachably wound, and the die cylinder is arranged with its axis parallel to the die cylinder. An anvil cylinder wound with an anvil made of urethane material that is received in a bite state. Both cylinders are driven in opposite directions by an external drive source commonly connected via a gear train, or each cylinder is independently driven by another external drive source. Therefore, a sheet material represented by a corrugated cardboard sheet horizontally supplied between the two cylinders is pressed forward by the punching blade and the anvil and sent forward, and in this process, the sheet material is punched into a required shape (so-called “ Soft cut ").

In the punching apparatus, in addition to a "soft cut" type in which an anvil made of a urethane material is wound around an anvil cylinder, a stainless steel, aluminum or copper or the like is provided around the outer periphery of a cylinder using an iron-based hard material. Use a steel sheet made of a material softer than the hardness of the cylinder, and use a sheet material by punching the sheet material by contacting the punching blade with the outer peripheral surface of the steel sheet. There is a so-called "hard cut" type in which a sheet material is punched by directly contacting a punching blade with the outer peripheral surface.

[0004]

In the above-mentioned punching device,
The die cylinder is arranged such that the axis of the die cylinder is parallel to a reference line orthogonal to the sheet feeding direction. Therefore, the horizontal punching blades provided on the die for applying a horizontal punching line parallel to the reference line to the sheet material are also set to be parallel to the reference line. When a sheet material is punched with the horizontal punching blade set as described above, the blade comes into contact with the sheet material at one time over its entire length, so that a large stress is momentarily applied to the die cylinder and the anvil cylinder. Works. When such an impact load is repeatedly applied to the two cylinders, there is a problem that the service life of the bearings and the like of the two cylinders is shortened. Therefore, measures have been taken to increase the mechanical strength of the bearings and the like, but in this case, the apparatus is disadvantageously increased in size and the manufacturing cost is increased. Particularly, in the case of the above-mentioned "hard cut" type, since the lateral punching blade of the die directly contacts the steel plate or the outer peripheral surface of the cylinder, there is a problem that vibration is generated or the blade is damaged.

Further, in a punching apparatus, a die having a ruled blade for a ruled line is planted on the curved board in order to apply a ruled line for folding a box or the like to a sheet material in conjunction with the punching. At this time, it is pointed out that a large impact load is applied to the horizontal ruled blade for forming a ruled line (horizontal ruled) parallel to the reference line as in the case of the horizontal punching blade, and the ruled line is strongly inserted and the ruled line is broken. That is, in the punching device, the cutting edge of the punching blade protruding from the curved board is cut into the anvil, thereby enabling the punching of the sheet material. The blade is inevitably damaged by the cutting edge, and the anvil is inevitably worn at the cutting edge of the anvil due to the damage. And in this case, the distance between the axes of the die cylinder and the anvil cylinder is reduced to ensure the punching,
Although the amount of penetration of the punching blade into the anvil is ensured, at this time, the interval between the ruled blade and the anvil cylinder also becomes small, and therefore the ruled line is strongly inserted and the ruled line is broken. Also, in the case of "hard cut" format,
Over time, the cutting edge of the punching blade becomes round and good punching cannot be performed. At that time, the distance between the axes of the die cylinder and the anvil cylinder is reduced. there were.

[0006] As a result of the wear of only the cutting edge portion of the punching blade in the anvil, irregularities may occur on the surface of the anvil, which may cause a problem that the ruled blade cannot make a good score. In order to solve this problem, the die biting portion of the punching blade with respect to the anvil is changed by shifting the die cylinder in the axial direction. However, the lateral punching blade is parallel to the axis of the cylinder. Good results could not be expected.

In order to cope with the above-mentioned problem, a horizontal punching blade, a horizontal ruled blade, and the like disposed on a die cylinder having an axis set in parallel with a reference line are arranged at a required angle to the axis. It has been proposed that each blade be tilted with respect to a reference line. According to this method, each blade does not contact the sheet material at one time over its entire length, but gradually contacts from one end to the other end, so that the impact load applied to the cylinder, the blade, and the like is reduced. Can be reduced.

However, as described above, the following problems occur due to the inclined arrangement of the horizontal punching blade and the horizontal ruled blade. That is, the die cylinder is formed with a plurality of mounting holes for mounting a curved board of a die in a required pattern, so that even when the dimensions of the curved board are changed at the time of changing the order, the curved board can be mounted. ing. However, the mounting holes drilled in the die cylinder
Since the horizontal punching blade and the vertical punching blade that is perpendicular to the horizontal punching hole are formed beforehand so as to be disposed straight in the axial direction and the circumferential direction with respect to the die cylinder, the horizontal punching blade is relative to the reference line. When the curved board is wound around a die cylinder, the horizontal and vertical punching blades that are inclined in the axial or circumferential direction of the cylinder face a position above an unused mounting hole. Occurs. And in this case, since the part facing the mounting hole in each punching blade is not reliably supported on the outer peripheral surface of the die cylinder,
At the time of punching the sheet material, the relevant portion may fluctuate in the radial direction of the cylinder, and it may not be possible to reliably punch or score the sheet material.

[0009]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the problems inherent in the prior art described above, and has been proposed in order to solve the problem suitably. The present invention extends the service life of a horizontal punching blade or a vertical punching blade. It is an object of the present invention to provide a die of a sheet material capable of performing both reliable punching with both punching blades and also reliably and favorably forming a ruled line with horizontal ruled blades and vertical ruled blades.

[0010]

[MEANS FOR SOLVING THE PROBLEMS]
In order to suitably achieve the intended purpose, the present invention provides a die cylinder and an anvil cylinder which are rotatably arranged in opposite directions to each other with a sheet material pass line interposed therebetween and supplied between the two cylinders. A die provided in the die cylinder in a punching apparatus for punching a sheet material of a predetermined shape into a sheet material, wherein a curved board wound around the die cylinder has a horizontal parallel to a front edge of the sheet material. A horizontal punching blade for punching a punching line is inclined at a required angle with respect to a base line parallel to an edge crossing the bending direction in the curved board, and a curved board formed in the die cylinder in a required pattern. A vertical punching blade that is implanted at a position that does not interfere with the plurality of mounting holes for mounting and that punches a vertical punching line parallel to a side edge orthogonal to the front edge of the sheet material on the curved board is provided. Together perpendicular to the horizontal punching blade, characterized in that it is embedded in a position that does not interfere with the plurality of mounting holes of the die cylinder.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a die for sheet material according to the present invention.

FIG. 1 and FIG. 2 are schematic structural views in which a punching device 10 in which a die according to an embodiment is provided is employed in a printer die cutter which is a typical example of a corrugated sheet processing apparatus. This processing apparatus is provided with a plurality of (three in this embodiment) for performing required printing on the sheet material 11 on the downstream side in the sheet feeding direction of a sheet feeding apparatus 12 for feeding and feeding the sheet material 11 typified by a corrugated cardboard sheet one by one. ), A sheet conveying device 14 and a punching device 10 for punching a sheet material 11 on which required multicolor printing has been performed are arranged downstream of the printer unit 13. Note that the machine center of the sheet supply device 12 and each printer unit 13 are aligned and matched, and the sheet material 11 supplied from the sheet supply device 12 is moved in a state where the center of the sheet width direction coincides with the machine center. The printing is performed by passing through.

The punching device 10 has a sheet feeding direction P
A punching blade 16 having a required shape is bent between a pair of frames 15, 15 separated in a direction intersecting with the curved board 1 in a vertical relationship with a path line of the sheet material 11 interposed therebetween.
A die cylinder 19 in which a die 18 implanted in the die 7 is detachably wound, and an anvil cylinder 21 in which a urethane material anvil 20 for receiving the cutting edge of the punching blade 16 in a biting state is wound (see FIG. 4). the axis L ₁ is rotatably disposed in parallel.

The two cylinders 19 and 21 are connected via a gear train (not shown), and are independent and independent motors separate from the main drive motor 22 for driving the sheet feeding device 12, the printer units 13 and the sheet conveying device 14. 23, the two cylinders 19 and 21 are configured to be rotationally driven in mutually opposite directions via a gear train. Accordingly, the sheet material 11 horizontally fed between the two cylinders 19 and 21 via the sheet conveying device 14 is nipped by the punching blade 16 and the anvil 20 and sent to the downstream side. 11 is punched in a required shape.

In the embodiment, the sheet material 11 has a long side.
Is formed in a rectangular shape in which the (front edge and Koentan) 11a and the short side (both side edges) 11b perpendicular, parallel to the reference line L ₂ of the long side 11a is perpendicular to the direction P in the sheet feeding, and Short side 1
1b is supplied to the punching device 10 in a reference posture parallel to the sheet feeding direction P (see FIG. 3). As the anvil cylinder 21, in addition to the above-mentioned "soft cut" type, a steel plate made of a material softer than the cylinder hardness such as stainless steel, aluminum or copper is provided on the outer periphery of a cylinder using an iron-based hard material. The sheet material is punched by abutting the punching blade against the outer peripheral surface of the steel sheet, or the sheet is formed by directly abutting the punching blade on the outer peripheral surface of the cylinder without winding the steel plate. The so-called "hard cut" for punching materials
The format can be adopted.

The opposing surfaces of the pair of frames 15, 15 are inclined parallel to the sheet feeding direction P at a required angle, and the two cylinders 1 disposed between the two frames 15, 15 are parallel to each other.
Axis L ₁ of the 9 and 21 is set to be inclined by a required angle theta ₁ upon a plane observed with respect to the reference line L ₂
(See FIG. 5). And, in this way, both cylinders 19, 21
The sheet material 11 supplied horizontally through the sheet conveying device 14 is inclined by the
As shown in FIG. 8, when the cylinders 19 and 21 are pinched and sent by the anvil 20 to the downstream side, they are obliquely translated toward the downstream side in the reference posture in accordance with the inclination angles of the cylinders 19 and 21. The inclination angle theta ₁ die cylinder 19 and anvil cylinder 21 is preferably set between 0.5 to 10 °. In the embodiment, both cylinders 19, 21
The (tilt angle θ ₁ ) is such that the shaft end on the drive side (the side where the independent motor 23 is disposed) is inclined away from the sheet conveying device 14 in FIG. It may be inclined in a direction away from the camera.

The curved board 17 of the die 18 is curved in an arc shape with substantially the same inner diameter as the outer periphery of the die cylinder 19, and has a horizontal base line L ₃ parallel to an edge crossing the curved direction. but it is positioned in the cylinder 19 in a state where the parallel to the axis L ₁ of the die cylinder 19 (see FIGS. 6 and 7). The curved board 17 has the punching blade 16
A plurality of through-holes (not shown) are formed at positions deviated from the planting position, and a plurality of mounting holes 40 are formed in the die cylinder 19 at required intervals in the axial and circumferential directions. The curved board 17 is configured to be fixed by screwing bolts (not shown) inserted through the plurality of through holes into the corresponding mounting holes 40 (see FIG. 9).

Among the punching blades 16 implanted on the curved board 17, a horizontal punching blade 16a for applying a horizontal punching line 24 to the sheet material 11 parallel to the reference line L ₂ (long side 11a).
As shown in FIG. 5, the end A located on the end side (the operation side in FIG. 2) of the die cylinder 19 that is inclined to the upstream side in the sheet feeding direction is connected to the leading side in the rotation direction of the die cylinder 19. The inclination angle θ ₁ ′ with respect to the horizontal base line L ₃ passing through the leading end A is set to be substantially the same as the inclination angle θ _{1 of the} axis L ₁ with respect to the reference line L ₂ .

That is, the axis L ₁ of the die cylinder 19 and the anvil cylinder 21 is inclined with respect to the reference line L ₂ , and the horizontal punching blade 16 a of the die 18 wound around the die cylinder 19 is moved to the die cylinder 19. The end A, which is located on the end side inclined to the upstream side in the sheet feeding direction, is inclined so as to be the leading side in the rotation direction of the die cylinder 19, so that the horizontal supply is performed between the two cylinders 19, 21 in the reference posture. Then, the horizontal punching blade 16a is gradually abutted from one end side to the other end side in the longitudinal direction of the sheet material 11 which is obliquely translated toward the downstream side in the reference posture and is punched. You. Thereby, the horizontal punching blade 16
By contacting the sheet material 11 with the sheet material 11 at one time over its entire length, a large stress is prevented from being applied to both the cylinders 19 and 21 and the horizontal punching blade 16a itself.

Among the punching blades 16 implanted on the curved board 17, a vertical punching blade 16b for applying a vertical punching line 25 orthogonal to the horizontal punching line 24 to the sheet material 11 is as follows.
As shown in FIG. 5, it is disposed on the curved board 17 so as to be orthogonal to the horizontal punching blade 16a. That is, in a state in which the curved board 17 and a transverse base line L ₃ and the axis L ₁ is wound so as to be parallel to the die cylinder 19, the vertical punching blade 16b
The inclination angle theta ₁ "of the vertical punching blade 16b with respect to the longitudinal baseline L ₄ that is perpendicular to the horizontal base line L ₃ through the rotation direction leading end B of the die cylinder 19, the axis L ₁ and the reference line L
₂ becomes substantially the same inclination angle theta ₁ and the. By arranging the vertical punching blades 16b in this manner, the sheet material 11 that is obliquely translated toward the downstream side in the reference posture can be moved.
Then, the vertical punching blade 16b is gradually abutted from one end to the other end in the longitudinal direction to perform punching. As a result, a vertical punching line 25 orthogonal to the horizontal punching line 24 punched by the horizontal punching blade 16a is punched in the sheet material 11.
(See FIG. 3).

The arrangement of the punching blades 16 in the die 18 will be described in more detail.
Is positioned spirally with the die 18 wound around a die cylinder 19, and the vertical line from the cutting edge to the cutting edge at each portion in the extending direction of the horizontal punching blade 16a is always the axis L of the die cylinder 19. It is set to intersect (orthogonal) with ₁ . Accordingly, the load applied to the cutting edge of the lateral punching blade 16a can be always received by the axis of the die cylinder 19, and the occurrence of vibration or the like due to the eccentric load applied to the cylinder 19 can be prevented. In addition, vertical punching blade 16b
Is positioned spirally with the die 18 wound around a die cylinder 19, and the vertical line extending from the cutting edge to the blade base at each portion in the extending direction of the vertical punching blade 16 b is always the axis of the die cylinder 19. It is set to intersect with L _1. That is, even in the vertical punching blade 16b, the load applied to the cutting edge can always be received by the axis of the die cylinder 19, and the cylinder 19 can be prevented from vibrating.

Further, as shown in FIG. 9, when the board 17 is wound around a die cylinder 19, the horizontal punching blade 16a and the vertical punching blade 16b implanted on the curved board 17 are pierced. All mounting holes 40 provided
Is set to face a position that does not interfere with That is, the punching blades 16a and 16b are reliably supported on the outer peripheral surface of the die cylinder 19 over the entire length thereof, and when punching the sheet material 11, the punching blades 16a and 16b vary in the radial direction to perform reliable punching. It can be prevented that the application cannot be performed.

When the curved board 17 is wound around the die cylinder 19 which is arranged obliquely as described above,
The sheet material 11 is positioned with reference to the longitudinal center of the horizontal cutting blade 16a on the front side in the rotation direction for punching the horizontal cutting line 24 on the most downstream side (front end edge side) of the sheet material 11. That is, the center of the front side horizontal punching blade 16a in the longitudinal direction is the sheet material 1.
When the first punching position is reached, the center is positioned so as to be aligned with the mechanical center of the printer unit 13. Thereby, the sheet material 11 supplied to the punching device 10 in a state where the center of the sheet width direction coincides with the machine center of the printer unit 13 can be punched at an appropriate position corresponding to a printing position. In addition, by aligning the center of the front horizontal punching blade 16a in the longitudinal direction with the center of the sheet material 11 in the sheet width direction, the width of the trim portions on both sides in the width direction generated when the sheet material 11 is punched is reduced. Can be even.

The curved board 17 has a sheet material 11
Ruler blade 28 and vertical ruler blade 29 for applying horizontal ruler 26 and vertical ruler 27 to
Is planted. And the horizontal ruled blade 28 is the horizontal punched blade 16
a, the vertical ruled blade 29 is disposed in parallel with the vertical punching blade 16b, and the horizontal ruled blade 28 has one end in the longitudinal direction (extending direction) like the horizontal punched blade 16a. , The sheet material 11 is gradually brought into contact with the sheet material 11 to form a ruled line. The conditions for laying the horizontal ruled blade 28 and the vertical ruled blade 29 on the curved board 17 are the same as those for the horizontal punched blade 16a and the vertical punched blade 16a. That is, the horizontal ruled blade 28 is spirally positioned in a state where the die 18 is wound around the die cylinder 19, and the vertical line from the cutting edge to the blade base at each portion of the horizontal ruled blade 28 in the extending direction is always the die. It is set to intersect (orthogonal) with the axis L ₁ of the cylinder 19. A vertical ruled blade 29 implanted on the curved board 17 so as to be orthogonal to the horizontal ruled blade 28 is spirally positioned with the die 18 wound around a die cylinder 19, and the vertical ruled blade 29 The vertical line from the cutting edge toward the cutting edge at each position in the existing direction is set to always intersect with the axis L ₁ of the die cylinder 19.

As shown in FIG. 1, each of the printer units 13 constituting the processing apparatus includes a printing cylinder 3 on which a printing plate (not shown) is wound with a pass line of the sheet material 11 interposed therebetween.
0 and the impression cylinder 31 are arranged so as to rotate in mutually opposite directions, and an ink transfer mechanism 32 is arranged on the side where the printing cylinder 30 is arranged. The printing cylinder 30 of the printer unit 13 is set to be on the opposite side (the lower side in the figure) to the position where the die cylinder 19 is provided in the punching device 10. When the relationship between the printing cylinder 30 and the impression cylinder 31 in the printer unit 13 is upside down (overprinting), the relationship between the die cylinder 19 and the anvil cylinder 21 of the punching device 10 is also arranged upside down. Is done. However, when there is only the punching blade 16 (when there is no ruled line blade such as the horizontal ruled blade 28 or the vertical ruled blade 29), the printing cylinder 30 and the die cylinder 19 can be arranged on the same side.

On the downstream side of the most downstream printer unit 13, two sheet conveying devices 14 of the same configuration are arranged in series, and the sheet material 11 on which required printing is performed by both conveying devices 14 is punched out. 10. Each sheet conveying device 14 includes an air chamber 33 disposed above the sheet path line, and the air chamber 33 has a duct 3 communicating with suction means such as a blower (not shown).
4 is connected, and the inside of the air chamber 33 is set to a negative pressure state by operating the suction means. Air chamber 33
A plurality of openings 33a are opened in a required pattern as shown in FIG. Also, inside the air chamber 33,
A plurality of rotationally driven feed rollers 35 are rotatably disposed, and each feed roller 35 is positioned with its outer peripheral surface protruding downward from a corresponding opening 33a. That is, the feed roller 3 is pulled by the suction force due to the negative pressure of the air chamber 33.
By bringing the upper surface of the sheet material 11 into contact with the sheet material 5, the sheet material 11 is conveyed by applying a feed force due to rotation of the feed roller 35. In the sheet conveying device 14, the sheet material 1 not printed by the printer unit 13 is used.
Since the upper surface of the sheet material 1 is conveyed while being held by suction,
1 can be conveyed without soiling the printing surface. Therefore, when the printing by the printer unit 13 is overprinting, the sheet conveying device 14 is configured to adsorb and hold the lower surface of the sheet material 11 and convey it, contrary to the embodiment.

The air chamber 3 in the sheet conveying device 14
The negative pressure formed at 3 is set to a value that allows the punching device 10 to obliquely translate the sheet material 11 toward the downstream side. Thereby, the sheet material 11
The material 11 is configured to be able to perform accurate punching while allowing a smooth translation of the material 11.

As shown in FIG. 2, the sheet feeding device 12, the printer units 13 and the sheet conveying device 14 are connected via a gear train 36, and each mechanism is rotated by a main drive motor 22. You. The main drive motor 22 and the independent motor 23 for driving the punching device 10 are driven and controlled by a control means 37, and are sent out one by one to the printer unit 13 at a required timing by the sheet feeding device 12 toward the printer unit 13. After the necessary printing is performed on the set sheet material 11 at a preset position by each printer unit 13, the sheet conveying device 1
4 and is fed horizontally to the punching device 10 via
The punching device 10 is set so that a portion corresponding to the position where the printing of the sheet material 11 is performed is accurately punched.

A vibration conveyor 38 and a stacker 39 are arranged in series on the downstream side of the punching device 10, and the products punched into a required shape by the punching device 10 are stacked on the stacker 3 via the vibration conveyor 39.
9. In addition, the punching device 1
Since the sheet material 11 punched at 0 is obliquely translated toward the downstream side as described above, the sheet material 11 of the sheet conveying device 14, the printer unit 13, and the sheet The machine center and the machine centers of the vibration conveyor 38 and the stacker 39 are deviated by the translation amount of the sheet material 11.

[0030]

Next, the operation of the punching device provided with the die according to the above-described embodiment will be described. The sheet material 11 supplied one by one to the printer unit 13 at a required timing by the sheet supply device 12 driven by the main drive motor 22 has its center in the sheet width direction coincident with the mechanical center of the printer unit 13. It is the reference posture. The sheet material 11 is subjected to required printing at a position set in advance by each printer unit 13. Then, the printed sheet material 11 is conveyed to the downstream side by the rotational force of the feed roller 35 in a state where the upper surface on which the printing is not performed is sucked and held by the sheet conveying device 14.

[0031] The sheet material 11 to be supplied to the one by one horizontally between the die cylinder 19 and anvil cylinder 21 via the sheet conveying apparatus 14, as shown in FIG. 3, the long side 11a is the reference line L ₂ And the short side 11b is parallel to the sheet feeding direction P. In other words, the horizontal punching line 24 applied to the sheet material 11
3 (shown by a two-dot chain line in FIG. 3) is the reference line L ₂
The sheet material 11 is supplied in a posture parallel to the sheet material.

The sheet material 11 horizontally fed in a reference posture between the two cylinders 19 and 21 which are driven to rotate in opposite directions by the independent motor 23
6 and the anvil 20 to be transported downstream. At this time, since the upstream side of the sheet material 11 is held by the sheet conveying device 14 in a state of allowing the parallel movement, the sheet material 11 is, as shown in FIG.
In accordance with the inclination angle of both cylinders 19 and 21, the cylinders are obliquely translated toward the downstream side in the reference posture, and in this process, the sheet material 11 is punched in a required shape. That is, with respect to the horizontal punching blade 16a in the die 18, one leading end A in the longitudinal direction of the punching blade 16a comes into contact with the sheet material 11 to start punching, and with the rotation of the die cylinder 19, the other trailing edge. The horizontal punching blade 16a gradually comes into contact with the sheet material 11 toward the end to perform punching. As described above, with respect to the die cylinder 19, which is arranged obliquely at an angle theta ₁ with respect to the reference line L _2, the cylinder 19
The end A located on the end side of the die cylinder 19 that is inclined toward the upstream side in the sheet feeding direction of the die cylinder 19 becomes the leading side in the rotation direction of the die cylinder 19. The horizontal punching line 24 punched by the horizontal punching blade 16a on the sheet material 11 that moves obliquely toward the downstream side by inclining by substantially the same angle θ ₁ ′ as shown in FIG. It is parallel to the line L ₂ (long side 11a).

The vertical punching blade 1 of the die 18
For 6b, one leading end B in the longitudinal direction of the punching blade 16b abuts on the sheet material 11 to start punching,
With the rotation of the die cylinder 19, the vertical punching blade 16b gradually comes into contact with the sheet material 11 toward the other trailing end to perform punching. In this vertical punching blade 16b, since it is orthogonal to the horizontal punching blade 16a, the vertical punching line punched by the vertical punching blade 16b on the sheet material 11 that moves obliquely in the reference posture toward the downstream side. 25 is parallel to the sheet feeding direction P (short side 11b) as shown in FIG. As described above, the center of the front horizontal punching blade 16a in the longitudinal direction reaches the punching position of the sheet material 11 by the rotation of the die cylinder 19, and the sheet material 1
Since the sheet material 11 is positioned so as to coincide with the center in the sheet width direction, the width of the trim portions on both sides in the width direction generated when the sheet material 11 is punched becomes uniform.

That is, the horizontal punching line 2 is formed on the sheet material 11.
4 does not come into contact with the sheet material 11 at one time over its entire length, but gradually comes into contact with the sheet material 11. Therefore, a large stress (impact) is applied to the die cylinder 19, the anvil cylinder 21, and the horizontal punching blade 16a itself. Force) is not added. Therefore, the service life can be extended without increasing the mechanical strength of the bearings and the like of the cylinders 19 and 21, and the size and cost can be reduced. Also die 18
Also, it is not necessary to increase the thickness of the curved board 17 in order to increase the support strength of the horizontal punching blade 16a or to attach a support for preventing the blade from falling down, so that the cost of the die 18 itself is reduced and the maintenance cost is reduced. Less is needed. Further, the horizontal punching blade 16a and the vertical punching blade 16b
In that each vertical line is set to intersect the axis L ₁ of the die cylinder 19, you can receive the load applied to the horizontal punching blade 16a and the vertical punching blade 16b always axis of the die cylinder 19, the cylinder It is possible to prevent the occurrence of vibration or the like due to the application of a load in the eccentric direction to 19.
Thus, the support structure for the die cylinder 19 can be simplified.

The horizontal punching blade 1 of the die 18
As shown in FIG. 9, the punching blades 6a and the vertical punching blades 16b face positions where they do not interfere with the mounting holes 40 of the die cylinder 19. It is definitely supported.
Therefore, when the sheet material 11 is punched, each punching blade 1
It is possible to prevent a situation in which reliable punching cannot be performed due to the radial fluctuation of 6a and 16b. The die cylinder 19 of the embodiment has mounting holes 40 formed in a pattern corresponding to a conventional type in which the horizontal punching blade 16a and the vertical punching blade 16b are not inclined.
It is not newly created for the type in which 6a and 16b are arranged obliquely. That is, even when the die cylinder 19 is inclined as in the embodiment, the conventional cylinder 19 can be used as it is.

Simultaneously with the punching by the punching blade 16,
The horizontal ruler blade 28 applies a horizontal rule 26 parallel to the horizontal punching line 24 and the vertical ruler blade 29 applies a vertical rule 27 parallel to the vertical punching line 25. At this time, the horizontal ruled blades 28 of the die 18 gradually come into contact with the sheet material 11 over the entire length thereof without contacting the sheet material 11 at one time. Can be prevented from occurring. Also, the vertical ruled blade 29 of the die 18 gradually contacts the sheet material 11 from one end in the longitudinal direction to the other end as the die cylinder 19 rotates. Furthermore, the impact load applied to the horizontal ruled blade 28 and the vertical ruled blade 29 is small, and the service life of the blades 28 and 29 can be extended. In the embodiment, the punching device 10 is configured to be driven by an independent motor 23 that is different from the main drive motor 22 that drives the sheet conveyance device 14, the printer unit 13, and the sheet supply device 12 on the upstream side. Vibration or the like generated by the punching device 10 can be prevented from being transmitted to another mechanism. Further, since the sheet material 11 can be supplied to the punching device 10 in the reference posture, each device located on the upstream side of the punching device 10 can have a conventionally used configuration. It can be introduced without major equipment changes.

Here, since the horizontal punching blade 16a of the die 18 is helically located on the outer periphery of the die cylinder 19, the horizontal punching blade 16a is axially straight with respect to the anvil 20 of the anvil cylinder 21. Do not cut into Therefore, by shifting the anvil cylinder 21 in the axial direction, it is possible to change the cutting edge of the lateral punching blade 16a with respect to the anvil 20. That is, it is possible to prevent the lateral punching blade 16a from biting into the same place at all times, and to prolong the service life of the anvil 20.
Further, since only the same portion of the anvil 20 can be prevented from being worn and can be evenly worn, it is possible to prevent a bad score or a broken ruled line due to the occurrence of unevenness on the surface of the anvil. Furthermore, since the horizontal punching blade 16a is inclined (helically positioned) in the circumferential direction of the anvil 20, when the horizontal punching blade 16a cut into the anvil 20 separates, scraps of the anvil 20 are scraped out. It works.
Since the vertical punching blade 16b of the die 18 is also configured to be inclined with respect to the sheet feeding direction P,
As in the case of the horizontal punching blade 16a, it has the function of preventing the anvil 20 from being biased and scraping off scum.

The sheet material 11 punched by the punching device 10 is transferred to the vibration conveyor 3.
8, the sheet moves in parallel with the sheet feeding direction P, and after the waste is separated by the conveyor 38, the waste is stacked on the stacker 39.

[0039]

FIG. 11 shows another embodiment of the die, in which two punching blades 16, 16 are arranged in parallel on the curved board 17 of the die 41 in the longitudinal direction thereof. It is configured to punch two products from one sheet material 11. In this alternative embodiment, both punching blades 1
6 and 16, the horizontal punching blade 16a and the vertical punching blade 1
Each of 6b is positioned so as to face a position that does not interfere with all the mounting holes 40 of the die cylinder 19. Therefore, when punching the sheet material 11, the horizontal punching blade 16a
And the vertical punching blade 16b does not fluctuate in the radial direction, so that the sheet material 11 can be reliably punched.

Here, the most downstream side of the sheet material 11
All punching (horizontal edge side) horizontal punching line 24 (in another example, 2
And the horizontal punching blades 16a, 16a of
When an imaginary line having a length between the left and right ends of the a and 16a is set, the curved board 17 is positioned in the die cylinder 19 based on the center of the imaginary line in the longitudinal direction. That is, when the center in the longitudinal direction of the imaginary line reaches the punching position of the sheet material 11, the center is aligned so as to be aligned with the mechanical center of the printer unit 13. As a result, printing is performed by the printing plate arranged right and right with respect to the machine center in the printer unit 13, and the center of the sheet width direction is set to
The sheet material 11 supplied to the punching device 10 in a state in which it coincides with the center of the machine can be surely punched by the respective punching blades 16 at appropriate positions on the left and right with respect to the center in the sheet width direction.

[0041]

[Modification] In the embodiment, as a punching device in which a die is provided, the axis of a die cylinder is used as a reference line in order to punch a horizontal punching line, a vertical punching line, or the like into a sheet material supplied in a reference position. Although a configuration in which the components are inclined is described, the present invention is not limited to this configuration. For example, the sheet material is supplied obliquely to the punching device under the condition that the axis of the die cylinder in which the horizontal punching blade and the vertical punching blade are inclined is arranged in parallel with the reference line, and the reference line and the sheet feeding direction. The die can also be used in an apparatus configured to punch a horizontal punching line and a vertical punching line parallel to the die. Further, in the embodiment, the die cylinder and the anvil cylinder are configured to be rotationally driven by one independent motor. However, each cylinder is rotationally driven by a separate motor, or a sheet feeding device or a printer unit is driven. The main drive motor may be connected to the main drive motor using a gear, a line shaft, or the like and driven to rotate.

[0042]

As described above, according to the die for sheet material according to the present invention, the horizontal punching blade for punching a horizontal punching line parallel to the front edge of the sheet material has an edge which intersects the bending direction of the curved board. Since it is inclined at a required angle with respect to the base line parallel to the edge, when punching the sheet material with the horizontal punching blade, the entire length of the blade does not contact the sheet material at once, and the horizontal punching is performed. The stress applied to the blade can be reduced. Further, since a large impact load is not applied to the horizontal punching blade, there is an advantage that the service life can be extended. In addition, since both the horizontal and vertical punching blades are set so as to face positions that do not interfere with the mounting holes of the die cylinder, the punching blades are securely supported on the outer peripheral surface of the die cylinder, and the punching of sheet material is performed. In this case, it is prevented that the punching blade fluctuates and the reliable punching is not performed.

A horizontal ruler blade for forming a horizontal rule on the sheet material is
By inclining the sheet material in the same manner as the horizontal punching blade, when applying the horizontal rule to the sheet material with the horizontal ruled blade, since the entire length of the blade does not contact the sheet material at once, the horizontal rule is applied to the sheet material. This has the advantage that it can be prevented from entering firmly and the occurrence of creases can be prevented. Further, since a large impact load is not applied to the horizontal ruled blade, there is an advantage that its service life can be extended.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a printer die cutter employing a punching device provided with a die according to a preferred embodiment of the present invention.

FIG. 2 is a schematic plan view illustrating a main part of the printer die cutter according to the embodiment.

FIG. 3 is a schematic plan view of the punching device according to the embodiment.

FIG. 4 is a schematic side view of the punching device according to the embodiment.

FIG. 5 is a schematic plan view showing the die cylinder according to the embodiment and the curved board of the die removed from the cylinder in a developed state.

FIG. 6 is a schematic plan view of a die cylinder on which a die according to the embodiment is wound.

FIG. 7 is a schematic perspective view of a die cylinder on which a die according to the embodiment is wound.

FIG. 8 is an explanatory diagram showing a state in which a sheet material is obliquely translated in a reference posture.

FIG. 9 is a schematic plan view of an essential part showing a state in which a die cylinder provided with a die according to the embodiment is developed.

FIG. 10 is a bottom view of the sheet conveying apparatus according to the embodiment.

FIG. 11 is a schematic plan view of an essential part showing a developed state of a die cylinder provided with a die according to another embodiment.

[Explanation of symbols]

Reference Signs List 10 punching device 11 sheet material 11a long side (front edge) 11b short side
(Side edge) 16a transverse punching blade 16b vertical punching blade 17 curved board 19 die cylinder 21 anvil cylinder 24 horizontal punching line 25 vertical punching line 26 ruled paper 27 Tatekei 28 Yokokeiha 29 Tatekeiha 40 mounting holes L ₃ horizontal Baseline θ ₁ ′ Horizontal cutting edge inclination angle

Claims (2)

[Claims] 1. A die cylinder (19) and an anvil cylinder (21) are vertically rotatably arranged in a direction opposite to each other with a pass line of a sheet material (11) interposed therebetween.
The die cylinder (1) in a punching device (10) for punching a sheet material (11) of a single sheet supplied during
9) A die disposed on the curved board (17) wound around the die cylinder (19),
Horizontal punching line (24) parallel to the front edge (11a) of sheet material (11)
The horizontal punching blade (16a) for punching the die is inclined at a required angle (θ ₁ ′) with respect to a base line (L ₃ ) parallel to the edge crossing the bending direction in the bending board (17), and the die cylinder (19) is planted at a position that does not interfere with a plurality of mounting holes (40) for mounting a curved board (17) perforated in a required pattern, and the curved board (17) is provided with a sheet material (11). ) Front edge (11a)
A vertical punching blade (16b) for punching a vertical punching line (25) parallel to a side edge (11b) orthogonal to the side edge (11b) is orthogonal to the horizontal punching blade (16a), and a plurality of die cylinders (19). A die made of a sheet material, which is planted at a position that does not interfere with the mounting hole (40). 2. The horizontal punching line is provided on the curved board (17).
A horizontal ruled blade (28) for forming a horizontal ruled line (26) parallel to (24) on the sheet material (11) is disposed parallel to the horizontal punching blade (16a), and the vertical punching line (25). Vertical ruled (27) parallel to the sheet material
The die according to claim 1, wherein a vertical ruled blade (29) formed in (11) is arranged in parallel with the vertical punching blade (16b).