JP4007672B2 - End face cutting device for packing roll - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packing roll formed by packing a roll-shaped article, and is a packing roll for cutting the outer peripheral portion of the end surface portion of the packing material or the peripheral surface portion adjacent thereto to separate the end packing material into a disc shape. The present invention relates to an end face cutting device. Here, the roll-like material is roll paper mainly used in a rotary printing press, but other than that, it is a roll-like material made of a material such as plastic, paper, metal, wood, or a composite of these materials. May be. The packing material includes various packing materials such as kraft paper, paperboard, and plastic sheet.
[0002]
[Prior art]
Roll paper used in rotary printing machines is covered with packing materials such as kraft paper, paperboard, and vinyl chloride resin sheets, and the peripheral surface and side end surfaces are covered before the roll paper is used. The end surface packing material) is first removed, and then the peripheral packing material (hereinafter referred to as the peripheral packing material) is removed. As a conventional device for removing the packing material on both end faces, a device developed by the present applicant and applied for a patent (see JP-A-1-103293) is known.
[0003]
As shown in FIGS. 7 (a), 8 (A), and (a), the apparatus described in this publication presses a knife 3 having a blade 3a against an end surface packing material 2 of a packing roll 1, While reciprocating the knife 3 in the direction of the blade 3a (arrow A direction), the packing roll 1 is rotated in the direction toward the blade 3a (arrow B direction), and FIGS. 7 (b), 8 (B), (b) ), The end surface packing material 2 is cut with the blade 3a, and the knife 3 is inserted between the end surface packing material 2 and the end surface of the inner roll (hereinafter referred to as the main paper), and thereafter the packing roll 1 By continuing the rotation in the arrow B direction, the portion adjacent to the end surface packing material 2 of the peripheral surface packing material 4 was cut in the circumferential direction, and the end surface packing material 2 was separated into a disk shape. .
[0004]
[Problems to be solved by the invention]
However, in the conventional apparatus, after the initial adjustment of the angle formed by the knife 3 with respect to the end surface of the packing roll 1, the angle is fixed to the angle. For this reason, for example, as shown in FIG. As shown in FIGS. 8B and 8B, when the knife 3 is inclined at an angle α with respect to the end surface of the packing roll so that the blade 3a of the knife 3 can be satisfactorily cut into the end surface packing material 2. ), The knife 3 is satisfactorily cut into the end surface packing material 2 and inserted inside, but the cutting edge 3a of the knife 3 is cut during the cutting of the peripheral surface packing material 4 adjacent to the end surface thereafter. There was a problem that it could bite into the end face of the inside book. Therefore, in order to prevent the knife 3 from biting into the end face of the paper, as shown in FIG. 8C, if the knife 3 is inclined in a direction away from the end face of the packing roll 1, this time the knife 3 When cutting 3 into the end surface packing material 2, the knife 3 could not be cut and the end surface packing material could not be cut and removed. For this reason, there was a limit in achieving both improvement in the success rate of removal of the end face packing material 2 and reduction in damage to the end face of the paper.
[0005]
The present invention has been made in view of the above-described problems. The knife can be surely cut into the end surface packing material, and the knife bites into the end surface of the paper during the subsequent cutting of the peripheral surface packing material. It is an object of the present invention to provide an end face cutting device for a packing roll that can prevent this and thereby reliably cut off the end face packing material without damaging the paper.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention makes it possible to vary the angle of the knife relative to the end face of the packing roll, and when cutting the knife into the end face packing material at the start of removal of the end face packing material, the angle is set so that good cutting can be performed. When cutting the peripheral packing material, the angle of the knife is changed to an angle that makes it difficult to cut into the end face of the paper. With this configuration, the present invention allows the knife to be surely cut into the end face packing material and inserted between the end face packing material and the end face of the paper, and thereafter the peripheral surface packing material can be inserted without biting the knife into the end face of the paper. It can cut | disconnect and can cut off an end surface packing material. In addition, as a method of using the device of the present invention, a knife is cut into the end surface packing material and inserted between the end surface packing material and the end surface of the paper, and then the portion of the peripheral surface packing material adjacent to the end surface packing material is Not only the case of cutting in the direction, but a method of cutting the outer peripheral part (the part near the outer peripheral edge) of the end face packing material in the circumferential direction may be adopted.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a packing roll support rotating device that holds and rotates a packing roll from which the end surface packing material is to be removed, and a packing material cutting that has a knife that cuts the packing material of the packing roll held by the packing roll support rotating device. The tool is pressed and the knife is pressed against the end surface packing material while rotating the packing roll, and the knife is cut into the end surface packing material and inserted between the end surface packing material and the inside end surface of the paper (roll material). Then, in the end surface cutting device of the packing roll configured to cut the portion adjacent to the end surface packing material of the peripheral surface packing material or the outer peripheral portion of the end surface packing material in the circumferential direction by the knife, The angle formed with respect to the end surface packing material is different from that at the end of the cutting and after the end of the cutting. Hereinafter, after inserting the knife between the end face packing material and the inner book paper end face of the present invention, the portion adjacent to the end face packing material of the peripheral packing material is cut in the circumferential direction with the knife. An example of the case of disconnecting will be described. According to the present invention, when the knife is cut into the end face packing material, the knife is surely cut into the end face packing material by cutting the knife into the end face packing material so that the knife can be cut into the end face packing material. After that, by changing the angle of the knife to an angle that makes it difficult to cut into the end surface of the paper, the outer periphery of the peripheral surface packing material or the end surface packing material is adjacent to the end surface packing material without causing the knife to bite into the end surface of the paper. The end packing material can be cut off by cutting the part.
[0008]
Here, as a preferred embodiment of the packaging material cutting tool for pressing and cutting the knife against the end face of the packing roll, a support base, and a support base that is rotatable to the support base and substantially parallel to the end face of the packing roll. A fulcrum shaft provided so that the fulcrum rotates in unison with the fulcrum shaft and is movable along the fulcrum shaft, and the knife is held so that the blade is parallel to the fulcrum shaft. And a knife driving device that reciprocates the knife holding member, and a fulcrum shaft rotating device that is connected to rotate the fulcrum shaft to a desired rotational angle position. . According to this configuration, the angle of the knife holding member that rotates together with the fulcrum shaft can be set to a desired angle by rotating the fulcrum shaft to a desired rotation angle position by the fulcrum shaft rotating device. The angle of the knife held by the holding member can be set to a desired angle. For this reason, when cutting the knife into the end face packing material at the start of removal of the end face packing material, the angle of the knife relative to the end face of the packing roll is The rotation angle position of the fulcrum shaft is set by the fulcrum shaft rotation device so that the angle can be satisfactorily cut with respect to the material, and the angle of the knife with respect to the packing roll end surface when the peripheral packing material is cut thereafter The rotation angle position of the fulcrum shaft can be changed by the fulcrum shaft rotating device so that the angle is difficult to cut into the end face.
[0009]
The structure for holding the knife holding member so as to rotate integrally with the fulcrum shaft and movably may be a structure using a key and a key groove, or a structure using a spline shaft. In the embodiment, a rotating base plate fixed to rotate integrally with the fulcrum shaft, a guide rail provided on the rotating base plate in parallel with the fulcrum shaft, and movably held on the fulcrum shaft and the guide rail The movable plate is provided, and the knife holding member is attached to the movable plate. With this configuration, the rotating base plate and the moving plate can be rotated integrally with the fulcrum shaft, and the angle of the knife can be arbitrarily set, and the moving plate can move while maintaining a fixed posture with respect to the rotating base plate. The knife driving device for reciprocating the knife can be held on the rotating base plate and the moving plate can be reciprocated, and the attachment mechanism of the knife driving device can be simplified.
[0010]
【Example】
Hereinafter, preferred embodiments of the present invention shown in the drawings will be described. 1 and 2 are schematic front views of a main part of a packing roll end face cutting device according to an embodiment of the present invention as seen from the packing roll side, and show different operating states. 3 is a schematic cross-sectional view taken along the line CC of FIG. 1, and FIGS. 4A and 4B are schematic cross-sectional views taken along the line DD of FIG. 3, showing different operating states. FIG. 5 is a schematic front view of the packing roll end face cutting device viewed from the packing roll side. 1 to 5, reference numeral 1 denotes a packing roll from which a packing material is to be removed. In this embodiment, roll paper (main paper) is packaged with a packing material. 2 is the end surface packing material of the packing roll, 4 is the peripheral surface packing material, and 5 is this paper. Reference numeral 6 denotes a packing roll supporting and rotating device that supports the packing roll 1 and rotates around its central axis. A supporting roller 7 that supports the packing roll 1 and a motor (not shown) that rotates the supporting roller 7. Etc.
[0011]
The packing material cutting tool 10 is provided so that it may be located in the both ends of the packing roll 1 hold | maintained at this roll support rotation apparatus 6. FIG. The packing material cutting tool 10 includes a support base 11 provided so as to be substantially parallel to the end face of the packing roll 1, and is parallel to the end face of the packing roll 1 around a predetermined turning center Q on the support base 11. A turning base plate 12 that is held so as to be turnable in a plane is provided. More specifically, the support 11 holds the support shaft 13 rotatably, and the turning base plate 12 is connected to the support shaft 13 so as to rotate integrally. An arcuate guide rail 14 centered on the turning center Q is attached to the upper surface of the support base 11, and a slider 15 attached to the lower surface of the turning base plate 12 is slidably engaged with the guide rail 14. Match. With this configuration, the turning base plate 12 can turn around the turning center Q. A lever 16 is attached to the lower end of the support shaft 13, and an air cylinder 17 is connected to the lever 16. Thus, by the operation of the air cylinder 17, the turning base plate 12 can be turned to the position (first operation position) shown in FIG. 1 and the position (second operation position) shown in FIG. That is, the air cylinder 17 and the lever 16 constitute a turning drive mechanism for turning the turning base plate 12. The turning drive mechanism for turning the turning base plate 12 is not limited to the one using the air cylinder 17 and can be changed as appropriate. For example, a rotary actuator, a motor, or the like may be used.
[0012]
A pair of bearing members 21, 22 are attached to the upper surface of the swivel base plate 12, and the fulcrum shaft 23 is held so as to be rotatable and parallel to the end surface of the packing roll 1. A driving motor 25 is connected to the fulcrum shaft 23 via a speed reducer 24. The drive motor 25 and the speed reducer 24 have a function of rotating the fulcrum shaft 23 to a desired rotation angle position and stopping at the desired rotation angle position, and constitute a fulcrum shaft rotation device. Brackets 27 and 28 are fixed to the fulcrum shaft 23, and a rotating base plate 29 is fixed to the brackets 27 and 28. A slider 31 is movably held on the fulcrum shaft 23, and a moving plate 32 is attached to the slider 31 so as to move together. Further, a guide rail 34 is attached to the rotary base plate 29 so as to be parallel to the fulcrum shaft 23, and a slider 35 fixed to the moving plate 32 is slidably held on the guide rail 34. 4A and 4B, the movable plate 32 and the rotation base plate 29 can rotate integrally with the fulcrum shaft 23, and change the rotation angle position of the fulcrum shaft 23. Thus, the angle with respect to the end face of the packing roll 1 can be changed, and the moving plate 32 can reciprocate in the direction of the fulcrum shaft 23 with respect to the rotating base plate 29.
[0013]
1 to 4, a knife holding member 37 is attached to the moving plate 32, and the knife 3 is attached to the knife holding member 37. Here, the knife 3 is mounted so that the blade 3a thereof is parallel to the fulcrum shaft 23 and located above the turning center Q. Therefore, the movable plate 32 reciprocates in parallel to the fulcrum shaft 23. At this time, the knife 3 reciprocates on the turning center Q in a direction parallel to the blade 3a. Further, an air cylinder 39 attached to the rotary base plate 29 is connected to the moving plate 32 so as to be reciprocated. Therefore, by reciprocating the moving plate 32 with the air cylinder 39, the knife 3 can be reciprocated in the direction parallel to the blade 3a (direction of arrow A). The air cylinder 39 constitutes a knife driving device for reciprocating the knife 3.
[0014]
As described above, as well understood from FIGS. 4A and 4B, the knife 3 is attached to the knife holding member 37 attached to the moving plate 32 in parallel to the fulcrum shaft 23. 32 is configured to rotate integrally with the fulcrum shaft 23 together with the rotation base plate 29, so that by rotating the fulcrum shaft 23 to a desired rotation angle position, the angle of the knife 3 with respect to the end face of the packing roll is shown in FIG. as shown in a), it can be set to an angle alpha ₁ of the blade 3a is inclined towards the packing roll end face, and as shown in FIG. 4 (b), in the direction of the blade 3a is separated from the packaging roll end face The inclined angle α ₂ can be set. Here, the angle α ₁ shown in FIG. 4A is an angle that allows the knife 3 to be easily cut into the end surface packing material 2, while the angle α ₂ shown in FIG. 3 is an angle at which it is difficult to cut into the end face of the paper. In addition, what is necessary is just to determine the specific numerical value of angle (alpha) ₁ , (alpha) ₂ by experiment etc. according to the kind etc. of packing material.
[0015]
Furthermore, since the knife 3 and the mechanism for holding and moving the knife 3 are held by the turning base plate 12, the turning center Q of the turning base plate 12 coincides with the peripheral surface of the packaging roll 1 as shown in FIG. 1. When the swivel base plate 12 is in the illustrated first operating position, the installation angle of the knife 3 [the position 3 at which the blade 3a of the knife 3 cuts the circumferential surface packing material 4 of the knife 3 (corresponds to the swivel center Q) Position) and the angle formed with respect to the reference line OP passing through the center 0 of the end face of the packing roll 1] can be defined as θ _1, and the second operation shown in FIG. When it is turned to the position, the knife 3 is also turned about the turning center Q, and the installation angle of the knife 3 can be changed to θ ₂ shown in FIG. Here, the installation angle θ ₁ is an angle inclined so that the cutting edge of the knife 3 is on the downstream side of the cutting position P of the circumferential packing material 4 with respect to the rotation direction (arrow B direction) of the packing roll 1. This is an angle at which 3 can be easily cut into the end surface packing material 2. On the other hand, the installation angle θ ₂ is an angle inclined so that the cutting edge of the knife 3 is upstream of the cutting position P of the circumferential packing material 4 with respect to the rotation direction (arrow B direction) of the packing roll 1. Is an angle at which it is difficult to cut into the end face of the paper. In addition, what is necessary is just to determine the specific numerical value of installation angle (theta) ₁ , (theta) ₂ by experiment etc. according to the kind etc. of packing material.
[0016]
As the knife 3, a knife provided with a straight and sharp blade 3 a is usually used, but a knife provided with a jagged blade such as a saw blade or a file-like blade may be used instead.
[0017]
1, 2, and 5, the support base 11 includes a base member 41, and the base member 41 is movably held by a guide rail 43 provided on the moving base 42 via a slider 44. Moreover, it can be moved by an air cylinder (not shown). The guide rail 43 is provided in a direction parallel to the axis of the packaging roll 1. Therefore, the knife 3 can be pressed against the end surface of the packaging roll 1 by moving the support base 11 along the guide rail 43. . Further, the moving table 42 is connected to an appropriate moving mechanism (not shown), and is configured to be moved to a desired position within a plane parallel to the end face of the packing roll 1 by the moving mechanism.
[0018]
Next, the operation of the packing roll end face cutting device having the above-described configuration will be described.
1 and 5, the packing roll 1 from which the packing material is to be removed is placed on the support roller 7 of the packing roll support rotating device 6, and then the moving table 42 is moved so that the packing material cutting tool 10 is end-face packed. Position at a predetermined position for material removal. That is, the swivel base plate 12 is positioned at a position where the swivel center Q substantially coincides with the outer periphery of the packing roll 1 (the peripheral packing material 4). At this time, the swivel base plate 12 occupies the first operating position shown in FIG. 1, and the installation angle of the knife 3 is an angle θ ₁ at which the knife 3 can be cut well with respect to the end surface packing material 4. Yes. At this time, the rotation angle position of the fulcrum shaft 23 is the position shown in FIG. 4A, and the angle of the knife 3 with respect to the end surface of the packing roll 1 is such that the blade 3a cuts into the end surface packing material 2 well. The angle α ₁ can be obtained.
[0019]
In this state, as shown in FIGS. 6A and 6A, the knife 3 is pressed against the end packing material 2 of the packing roll 1, and the air cylinder 39 (see FIG. 1) is operated to move the knife 3 in the direction of arrow A. The packing roll 1 is rotated in the direction of arrow B while being reciprocated. As a result, the knife 3 is surely cut into the end surface packing material 2 of the packing roll 1, and the knife 3 is inserted between the end surface of the paper 5 and the end surface packing material 2 as shown in FIGS. 6 (B) and 6 (b). The
[0020]
When the knife 3 is inserted between the end face packing material 2 and the end face of the paper, as shown in FIG. 2, the air cylinder 17 is operated to turn the turning base plate 12 to the second operating position. to change the angle θ _2. The installation angle θ ₂ is an angle at which the knife 3 does not easily cut into the end face of the paper, although there is no problem in cutting the peripheral packing material 4 with the knife 3. The change in the installation angle of the knife 3 may be performed while the packaging roll 1 continues to rotate, or may be performed while the rotation of the packaging roll 1 is temporarily stopped. In any case, since the blade 3a of the knife 3 is on the turning center Q during the turning of the knife 3 due to the turning of the turning base plate 12, the peripheral surface packing material 4 being cut is located at that position. The position where the blade 3a of the knife 3 cuts the peripheral packing material 4 is constant, and the cutting of the peripheral packing material 4 can be continued or resumed satisfactorily.
[0021]
Further, in parallel with the turning of the turning base plate 12, the drive motor 25 rotates the fulcrum shaft 23, and the rotating base plate 29 and the moving plate 32 are rotated to the positions shown in FIG. As a result, the knife 3 has an angle α ₂ that is inclined in a direction in which the blade 3 a is separated from the end surface of the packaging roll 1. Thereafter, in the state shown in FIGS. 6C and 6C, the rotation of the packing roll 1 in the direction of arrow B is continued, and the peripheral packing material 4 adjacent to the end packing material 2 is cut with the knife 3. At this time, the installation angle of the knife 3 is θ ₂ and the blade 3 a is inclined away from the end face of the book paper 5, so that the knife 3 cuts into the end face of the book paper 5 and is damaged. The peripheral packing material 4 can be cut well.
[0022]
When the packing roll 1 continues to rotate in the direction of the arrow B and makes about one rotation, the circumferential packing material 4 is cut over the entire circumference, and the end packing material 2 is separated from the circumferential packing material 4. Thereafter, the separated end surface packing material 2 is discharged by an appropriate means, and the packing roll 1 is sent to the next process. On the other hand, the packing material cutting tool 10 is returned to its original state and is made to stand by for the next packing roll. This completes one operation.
[0023]
In the above embodiment, as shown in FIGS. 1 and 2, the installation angle of the knife 3 with respect to the packing roll is variable, and the installation angle when the knife 3 is cut into the end surface packing material 2 is θ _1. The installation angle after cutting is changed to θ ₂ . This configuration is very preferable because it ensures the cutting of the knife 3 into the end surface packing material 2 and prevents the subsequent cutting of the knife 3 into the end surface of the paper. Is not necessarily limited to this configuration, and the installation angle of the knife 3 may be always constant. Even in this case, the angle of the knife 3 with respect to the end surface of the packing roll is set to the angle α ₁ shown in FIG. And after that, the peripheral packing material 4 can be cut while preventing the knife 3 from biting into the end surface of the paper by setting the angle of the knife 3 to an angle α ₂ shown in FIG. it can. In addition, when making the installation angle of the knife 3 constant, it is not necessary to provide the swivel base plate 12. Therefore, the swivel base plate 12 may be omitted and the fulcrum shaft 23 may be held directly on the support base 11.
[0024]
【The invention's effect】
As described above, the packing roll end face cutting device according to the present invention has a variable angle with respect to the packing roll end face of the knife for cutting the packing material, and is good when cutting the knife into the end face packing material at the start of cutting. It is configured to change the angle of the knife to an angle that makes it difficult to cut into the end surface of the paper when cutting the portion adjacent to the end surface packing material of the peripheral surface packing material or the outer peripheral portion of the end surface packing material. Therefore, the knife can be securely cut into the end face packing material and inserted between the end face packing material and the end face of the paper, and then the end face packing material of the peripheral surface packing material can be inserted without biting into the end face of the paper. The end surface packing material can be separated by cutting the adjacent portion or the outer peripheral portion of the end surface packing material in the circumferential direction. For this reason, the success rate of an end surface packing material removal operation | work can be improved. Further, since the knife can be prevented from biting into the end face of the paper, it is difficult for the paper to break, and the success rate of the paster can be improved. Furthermore, since it is possible to prevent the knife from biting into the end face of the book paper, the effect of eliminating the loss of the book paper can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a main part of a packing roll end face cutting device according to an embodiment of the present invention as seen from the packing roll side. FIG. 2 is a schematic front view showing the apparatus shown in FIG. 3 is a schematic cross-sectional view taken along the line CC in FIG. 1. FIG. 4A is a schematic cross-sectional view taken along the line DD in FIG. 3, and FIG. FIG. 5 is a schematic front view of the packing roll end face cutting device shown in FIG. 1 as viewed from the packing roll side. FIG. 6 is for explaining the operation of the device shown in FIG.
(A), (a) is a schematic side view and sectional views (B), (b) showing a state before cutting the knife into the end surface packing material of the packing roll, and a state immediately after cutting the knife into the end surface packing material FIGS. 7A and 7B are a schematic side view and a cross-sectional view showing a state in which the peripheral packing material is being cut with a knife. FIGS. 7A and 7B are conventional apparatuses. FIG. 8 is a schematic perspective view showing a state in which a knife is cut into the end face of the packing roll in FIG.
(A), (a) is a schematic side view and sectional views (B), (b) showing a state before cutting the knife into the end surface packing material of the packing roll, and a state immediately after cutting the knife into the end surface packing material The schematic side view and sectional views (C), (c) showing the state in which the angle of the knife when cutting the knife into the end surface packing material of the packing roll is different from the case shown in the above (A), (a) Schematic side view and sectional view
DESCRIPTION OF SYMBOLS 1 Packing roll 2 End surface packing material 3 Knife 3a Blade 4 Peripheral surface packing material 5 Paper 6 Packing roll support rotation apparatus 7 Support roller 10 Packing material cutting tool 11 Support stand 12 Turning base board 13 Spindle 14 Guide rail 17 Air cylinder 21, 22 Bearing member 23 Support shaft 25 Drive motor 27, 28 Bracket 29 Rotating base plate 32 Moving plate 34 Guide rail 37 Knife holding member 39 Air cylinder

Claims (3)

A packing roll support rotating device that holds and rotates the packing roll to which the end surface packing material is to be removed, and a packing material cutting tool having a knife that cuts the packing material of the packing roll held by the packing roll support rotating device, While rotating the packing roll, the knife is pressed against the end surface packing material, the knife is cut into the end surface packing material and inserted between the end surface packing material and the inner roll end surface, and then the knife, In an end surface cutting device for a packing roll configured to cut a portion adjacent to an end surface packing material of the peripheral surface packing material or an outer peripheral portion of the end surface packing material in the circumferential direction, an angle formed with respect to the end surface of the packing roll of the knife An end face cutting device for a packing roll, characterized in that it is configured to be different between when cutting into a packing material and after completion of cutting. The packing material cutting tool, a fulcrum shaft provided so as to be rotatable on the support pedestal and substantially parallel to an end surface of the packing roll, and so as to rotate integrally with the fulcrum shaft; A knife holding member that is held movably along a fulcrum axis and holds the knife so that its blade is parallel to the fulcrum axis; a knife driving device that reciprocates the knife holding member; and the fulcrum axis 2. The packing roll end face cutting device according to claim 1, further comprising a fulcrum shaft rotating device connected so as to rotate to a desired rotation angle position. A rotation base plate fixed so as to rotate integrally with the fulcrum shaft, a guide rail provided on the rotation base plate in parallel with the fulcrum shaft, and a movement movably held by the fulcrum shaft and the guide rail 3. The packing roll end face cutting device according to claim 2, further comprising a plate, wherein the knife holding member is attached to the moving plate.

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