JPH09301331A - Cutter for surface skin of paper roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect such a fact that the real paper on the top layer of a paper roll is surely cut when a surface skin cutter is inserted in the paper roll from the side face to cut the surface skin including a peripheral packaging material and the real paper on the top layer of the paper roll. SOLUTION: A surface skin cutter 15 is inserted in a paper roll 11 from the side face and a surface skin 13 of the paper roll 11 is cut by a rotary scooping cutter 17. A spit 16 of the skin cutter 15 is connected to an upside distinguishing sensor 22 to detect the color of the back of the surface skin 13, and a packaging material remover 25 to be pressed on the side face of the paper roll 11 is connected to a side face distinguishing sensor 26 to detect the color of the side face of the paper roll 11. When the surface skin of the paper roll 11 is cut, signals from the upside and side face distinguishing sensors 22 and 26 are compared with each other. When both signals are the same, it is decided that real paper of the paper roll 11 is surely cut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll paper skin-cutting device for axially cutting a packing material on a peripheral surface of a roll paper, and more particularly to a packing material for packing roll paper. The present invention relates to an apparatus for cutting a packaging material on a peripheral surface in an axial direction in order to remove a packaging material on a peripheral surface of an end surface-removed one. Here, the roll paper means a paper-like material wound in a roll shape, and is not limited to paper in a strict sense, but also includes a plastic film or the like. The packaging materials include various packaging materials such as kraft paper, paperboard, and plastic sheets.

[0002]

2. Description of the Related Art Generally, roll paper used in a rotary printing press is transported with its peripheral surface and end surface covered with packaging materials such as kraft paper, paperboard, and vinyl chloride resin sheet. Then, in order to apply this packed roll paper to a rotary printing machine, first remove the packing material on both end surfaces of the roll paper, and then remove the packing material on the peripheral surface portion by cutting in the axial direction of the roll paper, After that, an appropriate amount of surface paper (usually unwrinkled and unsuitable for use) is rolled out from the roll paper, cut and removed, and the leading end of the remaining paper is formed into an appropriate shape (for example,
It is said that it is cut into a V shape to form a paper edge, a double-sided tape is attached to the paper edge, the paper edge is rewound onto the roll paper, and the roll paper surface is temporarily fixed using a loosening prevention tab. We are tailoring for paper splicing.

Among these tailoring operations, a device for removing the packing material on both end surfaces has been developed (see, for example, Japanese Patent Laid-Open No. Hei 1).
Therefore, it has been desired to develop an apparatus capable of efficiently performing the subsequent steps of removing the packaging material on the peripheral surface of the roll paper and removing the main paper on the surface layer. Therefore, as a result of studying to automate this process, the present applicant directly inserts the skin cutting tool into the roll paper from a position close to the peripheral surface of the end face of the roll paper, and moves it in parallel with the axis of the roll paper. In this way, we developed a skin cutting device that scoops up and cuts the skin consisting of the packaging material on the peripheral surface and the main paper on the surface (see Japanese Patent Application No. 7-24718). In this epidermis cutting device, not only the packing material but also the main paper of the surface layer can be cut by simply inserting and moving the epidermis cutting tool into the roll paper. Therefore, as shown in FIG. Epidermis 2
Is cut in the axial direction of the roll paper 1 with the skin cutting tool 3,
By rotating the roll paper 1 as shown in FIGS. 4B and 4C, the advantage that the packaging material and the main paper whose surface layer is dirty can be simultaneously removed as the skin 2 and discharged onto the conveyor 4 can be obtained. .

[0004]

However, it has been found that this cover cutting device has further points to be improved. That is, at the time of cutting the epidermis, the epidermis cutting tool is inserted into the surface paper of the end face of the roll paper, but it is confirmed that the epidermis cutting tool is certainly inserted into the surface paper. No means is provided, and therefore, even if the skin cutting tool is inserted into the packing material or between the packing material and the main paper, it cannot be recognized. If the skin cutting tool is inserted into the packing material or between the packing material and the main paper, only the packing material will be cut and the main paper on the surface will not be cut, so rotate the roll paper after cutting the skin. When removing the skin, only the packing material was removed, and the main paper of the surface layer could not be removed, which sometimes caused trouble in the later tailoring process.

Further, as shown in FIG. 4B, when the roll paper 1 with the skin 2 cut is rotated and the skin 2 is sent out onto the conveyor 4 to be removed, if the roll paper 1 is wound in the winding direction. Is correct [in the case of the winding direction shown in FIG. 4 (c)], even if the surface layer main paper is cut, as shown in FIG. 4 (c), the rear end of the outer skin 2 including the surface layer main paper is roll paper. 1 is separated from the main paper 1a, but when the winding direction of the roll 1 is reversed, the main paper 1a is continuously fed out following the discharge of the skin 2 as shown in FIG. Epidermis 2
Cannot identify the rear end of Therefore, by detecting the trailing edge of the skin 2 fed from the roll paper 1, it is possible to detect whether or not the winding direction of the set roll paper is correct. However, when only the packaging material is cut and the main paper of the surface layer is not cut, the outer skin 2 is only the packaging material, so that even if the roll paper is wound in the opposite direction, the outer skin 2 will not be cut. Therefore, the roll paper 1 was judged to be in the correct winding direction, and from this point also a trouble occurred in the subsequent process.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a skin cutting tool which is inserted into a roll paper to cut the skin of the roll paper. An object of the present invention is to provide a skin-cutting device for a roll paper capable of discriminating whether or not the roll paper is inserted in the roll paper.

[0007]

In order to achieve the above object, in the present invention, a skin cutting tool is inserted into a roll paper,
When the epidermis is cut, the back surface of the epidermis and the end surface of the roll paper, which are picked up and cut off on the epidermis cutting tool, are respectively discriminated by optical sensors, and if both are the same, the epidermis cutting tool is The configuration is such that it is surely inserted in the paper. With this configuration, when cutting with the epidermis cutting tool, it can be confirmed that the epidermis cutting tool is inserted into the main paper, and the epidermis including the main paper can be reliably cut, and troubles in the post process can be prevented beforehand. it can.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a skin cutting tool is inserted into a roll paper from a position close to the peripheral surface on the end surface of the roll paper, and the skin paper cutting tool is moved in parallel with the axis of the roll paper to package the peripheral surface. In a device for cutting while cutting the skin including the material and the main paper of the surface layer, when the above-mentioned skin cutting tool cuts the epidermis, an optical type is used to determine the back surface of the skin picked up by the skin cutting tool. In addition to the upper side discrimination sensor, an optical end face discrimination sensor for discriminating the end face of the roll paper is provided, and whether the skin cutting tool is inserted into the main paper from the signals of the upper side discrimination sensor and the end face discrimination sensor. The configuration is such that a determination means for determining whether or not it is provided.

According to this structure, by comparing the signals from the upper side discrimination sensor and the end face discrimination sensor while the outer skin cutting tool is cutting the outer skin, the lowermost paper of the cut outer skin is the same as the end face of the roll paper. If it is the same, it means that the epidermis cutting tool is cutting the main paper, so that it can be confirmed that the epidermis cutting tool is correctly inserted into the main paper.

Further, in addition to the above-mentioned upper side discrimination sensor and end face discrimination sensor, an optical lower side discrimination for discriminating a paper surface located below the epidermis cutting tool when the epidermis cutting instrument cuts the epidermis. It is also possible to provide a sensor. If this lower side discrimination sensor is provided, the signals from the upper side discrimination sensor and the lower side discrimination sensor are compared, and if they are different, the skin cutting tool is positioned at the boundary between the main paper and the packing material. When it is determined that the cutting tool is inserted into the boundary between the packing material and the main paper and only the packing material is desired to be cut, the cutting can be performed while confirming that only the packing material is cut.
If the signals from the upper side discrimination sensor and the lower side discrimination sensor are the same, and if the signals are the same as the signals from the end face discrimination sensor, the skin cutting tool is inserted in the paper, and if different. It can be determined that the skin cutting tool is inserted in the packaging material, and the insertion position of the skin cutting tool can be detected.

Here, the upper side discrimination sensor, the lower side discrimination sensor, and the end face discrimination sensor may be those which detect only the amount of received light, but it is preferable to use the color discrimination sensor because the detection accuracy is high.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. FIG. 1 is a schematic sectional view and an end view showing a skin cutting procedure by a skin cutting device according to an embodiment of the present invention. A roll paper 11 is supplied in a state where the packaging material on the end surface is removed and only the packaging material 12 on the peripheral surface is left. Reference numeral 13 denotes a skin made of a packing material 12 and several sheets of main paper 11a on the surface of the roll paper, and 15
Is an epidermis cutting tool for cutting the epidermis. The epidermis cutting tool 15 is provided with a skewer 16 and a rotary blade 17, and is held by a moving table 18 indicated by a chain double-dashed line so as to move together. As shown in FIGS. 2 and 3, the skewer 16 has a thin flat portion 16a at its tip, and an inclined guide surface 16b for picking up the epidermis and a groove 16c into which the rotary blade 17 is inserted on the upper side behind the skewer 16. , And has a flat bottom surface 16d on the lower side. With this configuration, the skewer 16 is easily inserted between the end surface of the roll paper 11 and the main paper and the flat bottom surface 1 thereof is provided.
It is possible to move along the paper surface of the main paper 11b (see FIG. 1) located below 6d, and cut the main paper 11a above it with the rotary blade 17 while picking it up. The rotary blade 1
7 may be omitted, and a skin cutting tool having a configuration in which a cutting blade is formed in the groove 16c portion of the skewer 16 may be used.

The skewer 16 is formed with a hole 20 that opens in the inclined guide surface 16b for picking up the epidermis and a hole 21 that opens in the bottom surface. Inside the holes 20 and 21, the upper discrimination sensor 22 and the lower discrimination sensor 22 are formed. Optical fibers 22a and 23a at the tip of the side discrimination sensor 23 are attached. Here, as the upper side discrimination sensor 22 and the lower side discrimination sensor 23, color discrimination sensors capable of discriminating the color of the paper surface facing each other are used. Thus, the skewer 16 is the roll paper 11
When the outer skin 13 is cut by the rotary blade 17 while moving inside, the upper side discrimination sensor 22 can discriminate the color of the back surface of the outer skin 13 which is picked up by the skewer 16 and cut, and the lower side discrimination sensor. The color 23 can determine the color of the paper surface located under the skewer 16.

In FIG. 1, reference numeral 25 denotes payment of packing material,
A pair of openable / closable claws 25a and an opening / closing tool 25b for opening / closing the claws 25a are provided, and are configured to be pressed against the end surface of the roll paper 11 and moved in the radial direction by a drive mechanism (not shown). This packing material payment 25
Remove the remaining packing material 12a, which may remain at the insertion position of the skin cutting tool 15, on the end surface of the roll paper 1 from the skin cutting tool 15.
It is provided to dispel the payment before inserting. An end face discriminating sensor 26 for discriminating the end face of the roll paper 11 is attached to the packing material payout 25, and the end face discriminating sensor 26 also uses a color discriminating sensor capable of discriminating the color of the end face. There is.

Reference numeral 30 inputs signals from the end face discrimination sensor 26, the upper side discrimination sensor 22, and the end face discrimination sensor 23, and the skewers 16 of the skin cutting tool 15 are in the main paper, in the packing material, and between the main paper and the packing material from the signals. The control device is provided with a determination unit that determines which of the boundaries between the and is inserted. Here, the determination means provided in the control device 30 is such that when the color signals from the end face determination sensor 26, the upper side determination sensor 22 and the lower side determination sensor 23 are all the same (strictly, two preset preset values are used). If the skew level 16 is within the permissible range defined by the output level), it is determined that the skewer 16 is inserted into the main sheet, and the color signal from the end face determination sensor 26 is determined by the upper side determination sensor 22 and the lower side determination sensor. If it is different from the color signal from 23, it is determined that the skewer 16 is inserted in the packing material, and if the color signal from the upper discrimination sensor 22 is different from the color signal from the lower discrimination sensor 23, the main sheet And the packaging material 12 is determined to have been inserted. Further, the control device 30 determines whether or not the skin cutting tool 15 is correctly cutting based on the judgment result of the judgment means, and whether the skin cutting tool 15 is inside the main paper in the roll paper 11, inside the packing material, and It has a function to display which position of the boundary between the actual paper and the packing material is being cut.

Next, the operation of the apparatus having the above structure will be described. In the following operation, as shown in FIG. 1C, the skin cutting tool 15 is inserted into the main paper near the outer layer, and the packing material 1
2 and several sheets of the main sheet 11a of the surface layer are intended to be cut at the same time as the surface skin 13, and therefore, in this case, the correct cutting is performed. First, FIG.
As shown in (A) and (a), when the roll paper 11 from which the packing material on the end surface is removed is supplied to a predetermined position, the packing material dispenser 25 is pressed against the end surface and then moves outward in the radial direction. To be made. At this time, the skin cutting tool 15 stands by at a position away from the end surface of the roll paper 11. Next, FIG.
As shown in (B) and (b), after the tip of the packing material payout 25 moves slightly outside the outer circumference of the roll paper 11 to dispel the remaining packing material 12a, a pair of the packing material payouts 25 is removed. The claws 25a are opened, then the skin cutting tool 15 moves in parallel with the axis of the roll paper 11, and the tip of the skewer 16 is inserted into the end surface of the roll paper 11. The insertion position of the skewer 16 at this time is set in advance so as to be inside the main paper of the outer layer of the roll paper 11. Thereafter, as shown in FIG. 1 (C), the skin cutting tool 15 moves parallel to the axial direction of the roll paper 11, the skewer 16 scoops up the skin 13, and the rotary blade 17 cuts.

During the above cutting operation, the packing material is dispensed 2
When 5 is pressed against the end surface of the roll paper 11, the end surface determination sensor 26 determines the color of the end surface of the roll paper 11.
Next, when the skin cutting tool 15 cuts the skin 13 of the roll paper 11, the upper side discrimination sensor 22 discriminates the color of the back side of the skin 13 scooped up by the skewer 16 and the lower side discrimination sensor 23 skews. The color of the paper under 16 is determined. The judgment means provided in the control device 30 inputs the signals from the respective judgment sensors 22, 23 and 26 and judges which position in the roll paper 11 the epidermal cutting tool 15 is moving. That is, as shown in FIG. 1C, when the skewers 16 of the skin-cutting tool 15 are correctly inserted into the main sheet, the main sheets 11a and 11b are located above and below the skewers 16, respectively. Since the sensor 22 determines the color of the main paper, and the end face determination sensor 26 also determines the color of the end face of the roll paper (which is the same color as the main paper), both signals are the same, and the determination is made. Means from this information,
The skin cutting tool 15 determines that the skin 13 including the main paper 11a is being cut, and the control device 30 determines based on the result.
Display that the disconnection is done properly.

On the other hand, when the insertion position of the skin cutting tool 15 is incorrect and the skewer 16 is inserted between the packing material 12 and the main paper 11a or between the packing materials 12 to cut the skin, the upper side is cut. The discrimination sensor 22 discriminates the color of the packaging material 12 located on the upper surface of the skewer 16. Therefore, the upper discrimination sensor 2
Since the signal from 2 is different from the signal from the end face determination sensor 26, the determination means is the main sheet 11 whose outer layer cutting tool 15 is the surface layer.
The control device 30 judges that a has not been disconnected, and displays an error. Thereby, the operator can recognize that the main sheet is not cut correctly when the epidermis is cut, and by performing the cutting operation again, it is possible to avoid a trouble in a post process. Further, at this time, the judging means compares the signals from the upper side discriminating sensor 22 and the lower side discriminating sensor 23, and when both are different (when the main sheet is located on the lower surface),
It is determined that the skewer 16 has passed between the packing 12 and the main paper 11a, and if both are the same, it is determined that the skewer 16 has passed through the packing material 12, and these results are determined by the control device 30. Is displayed. As described above, the operator can recognize whether or not a correct cut is made at the time of cutting the epidermis, and if the cutting position is not correct, the skewer 1 of the epidermis cutting tool 15
It is possible to recognize which position 6 has passed.

In the above description, the case where the skin cutting tool 15 is inserted into the main paper is regarded as the correct cutting, but depending on the cutting mode, the skin cutting tool 15 may be inserted between the main paper and the packing material 12.
Alternatively, it may be desired to insert it in the packing material 12. In the above embodiment, the epidermis cutting tool 15 is determined from the signals from the upper side discrimination sensor 22, the lower side discrimination sensor 23 and the end face discrimination sensor 26.
It is possible to determine in which position the skewer 16 of the roll paper 11 is inserted, that is, in the main paper, the packing material, or the boundary between the main paper and the packing material. It is possible to determine whether or not the correct disconnection is performed, and by inputting in the control device 30 which case is the correct disconnection, an error occurs when the control device 30 does not perform the correct disconnection. The display can be done.

As a method of using the epidermis cutting device, the epidermis cutting tool 15 is always used as shown in FIG.
In the case of limiting only to cutting the epidermis 14 including 1a, it is only necessary to determine whether or not the epidermis cutting tool 15 is inserted in the main paper, and the epidermal cutting tool 15 is used as the roll paper 1
It is not necessary to determine which position of 1 is inserted. In this case, it is only necessary to determine whether or not the main sheet 11a is present on the skewer 16 of the epidermis cutting tool 15, and this determination can be made only by comparing the signals of the upper side discrimination sensor 22 and the end face discrimination sensor 26. Therefore, the lower discrimination sensor 23 may be omitted. However, if the lower discrimination sensor 23 is also provided as in the illustrated embodiment, it is possible to obtain the advantage of discriminating various forms of cutting as described above.

Further, in the above embodiment, the upper discrimination sensor 2
2. The lower side discrimination sensor 23 and the end face discrimination sensor 26 detect the color of the paper surface located above the skewer 16, the color of the paper surface located below, and the color of the end surface of the roll paper, and insert the skin cutting tool from those colors. Although the position is determined, the present invention is not limited to the case where the color determination sensor is used, and an optical type determination sensor of a type that receives and determines the amount of reflected light from each surface may be used.
However, as shown in the embodiment, it is preferable to use the color discrimination sensor because the discrimination accuracy is high.

[0022]

As described above, according to the present invention, when the epidermis cutting tool cuts the epidermis of roll paper, an optical type is used to determine the back surface of the epidermis cut by the epidermis cutting tool. In addition to the upper side discrimination sensor, an optical end face discrimination sensor for discriminating the end face of the roll paper is provided, and whether the skin cutting tool is inserted into the main paper from the signals of the upper side discrimination sensor and the end face discrimination sensor. By providing a determining means for determining whether or not the innermost paper surface of the cut skin is rolled by comparing the signals from the upper side discrimination sensor and the end face discrimination sensor during the skin cutting by the skin cutting tool. It is possible to judge whether it is the same as the edge of the paper, and therefore whether the skin cutting tool is correctly inserted in the paper during the cutting operation. Caused by It has the effect that the trouble that is can be avoided in advance.

Here, in addition to the above-mentioned upper side discriminating sensor and end face discriminating sensor, further, an optical type discriminating unit for discriminating a paper surface located under the epidermis cutting tool when the epidermis cutting tool cuts the epidermis. If a side discrimination sensor is provided, the signals from the upper discrimination sensor and the lower discrimination sensor are compared, and if they are different, the skin cutting tool is located at the boundary between the main paper and the packing material. If the signals from the upper side discrimination sensor and the lower side discrimination sensor are the same, and if the signals are the same as the signals from the end face discrimination sensor, the skin cutting tool is inserted in the paper. If it is different, it can be determined that the epidermis-cutting tool is inserted in the packing material, and the effect is that the insertion position of the epidermis-cutting tool can be detected.

Further, the upper discrimination sensor, the lower discrimination sensor,
When the color discrimination sensor is used as the end face discrimination sensor, the detection accuracy is high and the insertion position of the epidermis cutting tool can be reliably detected.

[Brief description of drawings]

FIG. 1 shows a skin cutting procedure by a skin cutting device according to an embodiment of the present invention, in which (A) and (a) are a schematic cross-sectional view and an end view showing a state in which a packing material dispenser is pressed against the end surface of a roll paper. , (B) and (b) are schematic cross-sectional views and end views showing a state in which the epidermal cutting tool is inserted into the end face of the roll paper, and (C) are schematic cross-sectional views showing the state in which the epidermal cutting tool cuts the epidermis.

FIG. 2 is a schematic perspective view showing a state in which the epidermis is cut by the epidermis cutting tool of the above embodiment.

3A and 3B show a skewer of an epidermis cutting tool used in the above-mentioned embodiment, wherein FIG. 3A is a schematic plan view and FIG. 3B is a schematic side view.

4 (a), (b), (c) and (d) are schematic side views for explaining an operation of cutting and removing the epidermis by a conventional epidermis cutting device.

[Explanation of symbols]

 11 Roll Paper 11a, 11b Main Paper 12 Packaging Material 13 Skin 15 Skin Cutting Tool 16 Skewers 17 Rotating Blade 22 Upper Discrimination Sensor 23 Lower Discrimination Sensor 22a, 23a Optical Fiber 25 Packing Material Disposal 26 End Face Discrimination Sensor

Claims (3)

[Claims] 1. A skin cutting device for cutting a packaging material for a peripheral surface of a roll paper, the end surface of the roll paper being inserted into the roll paper from a position close to the peripheral surface, and being parallel to the axis of the roll paper. To determine the epidermis cutting tool that moves to and cuts the epidermis including the packaging material of the peripheral surface while cutting the epidermis, and when the epidermis cutting tool cuts the epidermis, the back side of the epidermis picked up by the epidermis cutting tool is determined. An optical upper side discrimination sensor provided so as to provide an optical end face discrimination sensor provided so as to discriminate the end face of the roll paper, and the skin cutting tool from signals of the upper side discrimination sensor and the end face discrimination sensor. An apparatus for cutting a skin of a roll paper, which has a judging means for judging whether or not the paper is inserted in the paper. 2. A skin cutting device for cutting a packaging material for a peripheral surface of roll paper, wherein the end surface of the roll paper is inserted into the roll paper from a position close to the peripheral surface and is parallel to the axis of the roll paper. To the epidermis including the packing material of the peripheral surface to cut while picking up the epidermis, and when the epidermis cutting tool cuts the epidermis, the epidermis cutting tool picks up the back surface of the epidermis and the aforementioned An optical upper side discrimination sensor and a lower side discrimination sensor which are respectively provided to discriminate the paper surface located below the skin cutting tool, and an optical end face discrimination which is provided to discriminate the end surface of the roll paper. It is determined from the sensor and the signals of the upper side discrimination sensor, the lower side discrimination sensor and the end face discrimination sensor whether the skin cutting tool is inserted in the main paper, the packing material, or the boundary between the main paper and the packing material. Has a judgment means An apparatus for cutting a roll paper skin, which is characterized by: 3. The roll paper skin cutting device according to claim 1, wherein each of the discrimination sensors is a color discrimination sensor.