JP2015100461A - Method and apparatus for manufacturing paper roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for manufacturing a paper roll, which enable manufacture of the paper rolls unifying patterns by putting them in order.SOLUTION: A paper roll 3 is manufactured through the steps of: forming a part 4 subject to printing on a log 2 and forming blank parts 5 at both ends of the part 4 subject to printing; detecting a reference position, in which the part 4 subject to printing is arranged almost in the center of the paper roll 3, by a detector 26; adjusting the amount of delivery of the log 2 by a control device 27 on the basis of the reference position; and cutting the log 2 in the blank part 5.

Description

  The present invention relates to a paper roll manufacturing method and a paper roll manufacturing apparatus.

  Conventionally, for example, thin paper such as toilet paper, tissue paper, and kitchen paper is colored and wound into a roll and sold as a paper roll. As a method for producing such a colored paper roll, there is a paper roll coloring method described in Patent Document 1 below. According to this paper roll coloring method, the coloring step is included in the dehydration step and the drying step, and in the coloring step, the raw fabric roll is colored with each colorant sprayed from a plurality of nozzles. The colored raw fabric roll is wound up by a rewinder or the like to produce a log. The log is cut into a predetermined width by a log cutter to form a paper roll.

Japanese Patent No. 4808132

  In the above log, all the logs are cut at the same interval because the pattern drawn by coloring is continuous in the width direction, and the width may be different for each log as the paper expands and contracts. A paper roll with a different pattern position is produced each time it is cut.

  The present invention has been proposed in view of the above problems. That is, an object of the present invention is to provide a paper roll manufacturing method and a paper roll manufacturing apparatus capable of manufacturing a paper roll with a uniform pattern.

  In order to achieve the above object, a paper roll manufacturing method according to the present invention is a paper roll manufacturing method for manufacturing a paper roll by cutting a log having a printed portion while feeding it in the longitudinal direction. And a procedure for forming blank portions at both ends of the printing portion, a procedure for detecting a reference position where the printing portion is arranged at a substantially center of the paper roll, and sending out the log And a procedure for adjusting an amount based on the reference position and a procedure for cutting the log at the blank portion.

  The paper roll manufacturing method according to the present invention is characterized in that the reference position is detected based on a substantially center of the printed part.

  The paper roll manufacturing apparatus according to the present invention is a paper roll manufacturing apparatus in which a log having a printed part is cut while being sent out in the longitudinal direction to produce a paper roll. A printing device in which blank portions are formed at both ends of the printing portion, a detection device that detects a reference position where the printing portion is arranged at a substantially center of the paper roll, and an amount by which the log is sent out Is controlled based on the reference position, and a cutting device that cuts the log at the blank portion.

  The paper roll manufacturing method and paper roll manufacturing apparatus according to the present invention have the above-described configuration. With this configuration, the amount to be sent out is adjusted for each paper roll based on the reference position, and the log is sent out. By adjusting the amount by which the log is sent out, the position at which the log is cut is adjusted so that the printed part is arranged at the approximate center of the paper roll. Therefore, it is possible to manufacture a paper roll in which the printed parts are aligned and unified.

  In the paper roll manufacturing method according to the present invention, the reference position is detected based on the approximate center of the printing portion. In other words, if a paper roll is manufactured by cutting a log at a position that is equidistant (or substantially equidistant) from the position of the approximate center of the printed part in the longitudinal direction of the log, the paper roll is approximately centered on the printed part. Therefore, the reference position is detected based on this. As a result, the portion to be printed is arranged approximately at the center of the paper roll. Therefore, it is possible to manufacture a paper roll in which the printed parts are aligned and unified.

It is the schematic of the printing apparatus with which the paper roll manufacturing apparatus which concerns on embodiment of this invention was equipped. 1 is a schematic view of a detection device and the like provided in a paper roll manufacturing apparatus according to an embodiment of the present invention. It is explanatory drawing explaining the reference | standard position of the log cut | disconnected with the paper roll manufacturing apparatus which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are schematic views of a paper roll manufacturing apparatus 10 according to the present embodiment. FIG. 1 shows a printing apparatus 11 and FIG. 2 shows a log cutting apparatus 20. The paper roll manufacturing method according to the present embodiment is realized by the paper roll manufacturing apparatus 10.

  The paper roll manufacturing apparatus 10 includes a printing apparatus 11 and a log cutting apparatus 20. As shown in FIG. 1, the printing apparatus 11 is, for example, a flexographic printing machine, and a printing portion 4 is formed on the base paper 1 and blanks are formed at both ends of the printing portion 4 (or between the printing portions 4). The part 5 is formed and the print roll is manufactured (see FIG. 3). In the flexographic printing machine, the ink sent to the chamber 12 is transferred to the anilox roll 13, and the ink is further transferred to the convex portion 15 of the plate roll 14. This ink is printed on the base paper 1 sent out along the impression drum roll 16. Thereby, the to-be-printed part 4 is formed in a print roll (refer FIG. 3).

  Five chambers 12 are arranged in parallel in the width direction of the base paper 1. Each of the five chambers 12 has four, three, three, three, four, and four ink receivers (not shown), and packing between the chambers 12 and between the ink receivers (not shown). ) Is attached. By this packing, mixing of ink between adjacent chambers 12 is prevented and a blank portion 5 is formed on the print roll (see FIG. 3).

  The print roll is wound by the winder (not shown) or the rewinder (not shown) so that the finished dimensions have the same width and length and are taken up. The log 2 is stocked by an accumulator (not shown) until it proceeds to the next process.

  As shown in FIG. 2, the log cutting device 20 is a log cutter, for example, and is arranged along the frame 21 on which the log 2 is carried and transported, the feed mechanism 22 attached to the frame 21, and the log 2. The detection device 26 detects the reference position, the control device 27 adjusts the amount of the log 2 sent out based on the reference position, and the cutting device 28 that cuts the log 2. In the following description, the direction in which the log 2 is sent out is “front 30”.

  The feed mechanism 22 is disposed at the end of the log 2 and feeds the log 2 in the longitudinal direction (forward 30), the feed chain 24 to which the feed device 23 is attached, and the feed device 23 via the feed chain 24. The servo motor 25 is operated. The feed mechanism 22 is driven by the servo motor 25 and the feed chain 24 rotates, so that the feed device 23 moves forward 30 along the frame 21. The log 2 is fed forward 30 by the movement of the feeding device 23.

  The detection device 26 is, for example, a camera type image sensor, and the reference position is detected. The reference position is a position at which the printing part 4 is arranged at the approximate center of the paper roll 3. The reference position is detected based on the position of the substantially center of the printing part 4 (center position 6, see FIG. 3).

  The control device 27 calculates the amount by which the log 2 is sent out based on the reference position. Information on the amount of log 2 sent out is sent to servo motor 25, and servo motor 25 is controlled in accordance with this information.

  The cutting device 28 is, for example, a cutter to which a rotary blade that cuts the log 2 in a direction intersecting the direction 30 in which the log 2 is sent out is attached. In the cutting device 28, the blank portion 5 of the log 2 sent out by the feed mechanism 22 is matched, and the log 2 is cut. Regarding the individual paper rolls 3 manufactured by cutting the log 2, the cutting position 7 where the log 2 is cut is equidistant (or substantially equidistant) from the center position 6 back and forth. In some cases, the cutting position 7 is substantially the center of the blank portion 5.

  Next, the effect | action of the paper roll manufacturing apparatus 10 and the manufacturing method of a paper roll are demonstrated.

  As shown in FIG. 1, in the printing apparatus 11, the print roll is configured such that the ink sent to the chamber 12 is printed on the base paper 1 through the rolls 13 and 14 to form the print target portion 4. Ink printing is prevented through the packing, and blank portions 5 are formed at both ends of the printed portion 4 (or between the printed portions 4). For example, if the number of chambers 12 is five (four, three, three, three, four, etc.), 17 portions to be printed 4 are formed on the print roll. The print roll becomes a log 2 through a winder or the like and is conveyed to the log cutting device 20. As the print roll is wound up, it is pulled to stretch the paper. The base paper 1 has a width of about 2000 mm, but the width of the print roll may exceed 2000 mm when pulled.

  As shown in FIG. 2, in the log cutting device 20, the log 2 placed on the frame 21 is sent to the front 30 by the feeding device 23, and cut by the cutting device 28 to produce the paper roll 3. The amount by which the log 2 is sent is obtained by adjusting the width value for one paper roll based on the reference position. More specifically, the detection device 26 detects the center position 6 of the printing portion 4 and detects the reference position based on the center position 6 (see FIG. 3). That is, if the log 2 is cut at a position equidistant (or substantially equidistant) from the center position 6 of the printed part 4 in the longitudinal direction of the log 2, the paper roll 3 is substantially centered on the printed part 4. Therefore, the reference position is detected based on this.

  The amount by which the log 2 is sent out is adjusted by the control device 27 based on the reference position, and this information is sent to the servo motor 25. The servo motor 25 is driven according to the information and moves the feeding device 23 forward 30 via the feeding chain 24. The log 2 sent out by the feeding device 23 by the amount by which the log 2 is sent out is cut by matching the cutting position 7 of the blank portion 5 with the position of the cutting device 28. The width of the paper roll 3 is, for example, 112 mm to 115 mm, 105 mm to 108 mm, 101 mm to 104 mm, etc., and is a range that can be accommodated in a roll holder (not shown). Therefore, the cutting position width 7 is appropriately adjusted according to the width of the paper roll 3.

  The above operation is repeated in order from the tip of the log 2 to produce a plurality of paper rolls 3.

  Next, effects of the paper roll manufacturing apparatus 10 and the paper roll manufacturing method will be described.

  As described above, according to the paper roll manufacturing apparatus 10 and the paper roll manufacturing method, the print portion 4 is formed on the base paper 1 by the ink sent to the chamber 12 via the rolls 13 and 14 in a flexographic printing machine or the like. At the same time, ink printing is prevented through the packing, and blank portions 5 are formed at both ends (or between the printed portions 4) of the printed portion 4. Next, in a log cutter or the like, the center position 6 of the printing portion 4 is detected by, for example, a camera-type image sensor, and the printing portion 4 is arranged at the substantially center of the paper roll 3 based on the center position 6. A reference position that is a position to be detected is detected. If the log 2 is cut at a position that is equidistant (or substantially equidistant) from the center position 6 of the printing portion 4 in the longitudinal direction of the log 2, the paper roll 3 is arranged at the center of the printing portion 4. Therefore, the reference position is detected based on this. Further, the amount by which the log 2 is sent out is adjusted by the control device 27 based on the reference position, and the log 2 sent out by the feeding device 23 by the amount by which the log 2 is sent out is the cutting position 7 of the blank portion 5 at the cutting device 28. Cut according to the position.

  With this configuration, the amount to be sent out is adjusted for each paper roll 3 based on the reference position, and the log 2 is sent out. By adjusting the amount by which the log 2 is sent out, the cutting position 7 of the log 2 is adjusted so that the printed part 4 is arranged at substantially the center of the paper roll 3. Therefore, it is possible to manufacture the paper roll 3 in which the print target parts 4 are aligned and unified.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment. The present invention can be modified in various ways without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Base paper 2 Log 3 Paper roll 4 Printed part 5 Blank part 6 Center position 7 Cutting position 10 Paper roll manufacturing apparatus 11 Printing apparatus 12 Chamber 13 Anilox roll 14 Plate roll 15 Convex part 16 Impressor roll 20 Log cutting apparatus 21 Frame 22 Feed mechanism 23 Feed device 24 Feed chain 25 Servo motor 26 Detection device 27 Control device 28 Cutting device 30 Front

Conventionally, for example, thin paper such as toilet paper, tissue paper, and kitchen paper is colored and wound into a roll and sold as a paper roll. As a method for producing such a colored paper roll, there is a paper roll coloring method described in Patent Document 1 below. According to this paper roll coloring method, the coloring step is included in the dehydration step and the drying step, and in the coloring step, the raw roll is colored with each colorant sprayed from a plurality of nozzles. The colored raw fabric roll is wound up by a rewinder or the like to produce a log. The log is cut into a predetermined width by a log cutter to form a paper roll.

Claims (3)

In the paper roll manufacturing method of manufacturing a paper roll by cutting a log having a printed part while feeding it in the longitudinal direction,
A procedure for forming the printing portion and forming blank portions at both ends of the printing portion;
A procedure for detecting a reference position, which is a position at which the printed part is arranged at a substantially center of the paper roll;
Adjusting the amount of sending out the log based on the reference position;
Cutting the log at the blank part;
including,
A method for producing a paper roll characterized by the above. The reference position is detected based on the approximate center of the printed portion;
The method for producing a paper roll according to claim 1. In a paper roll manufacturing apparatus in which a log having a printing part is cut while being sent out in the longitudinal direction and a paper roll is manufactured,
A printing apparatus in which the printing part is formed and a blank part is formed at both ends of the printing part;
A detection device for detecting a reference position, which is a position at which the printed part is arranged at substantially the center of the paper roll;
A control device in which the amount by which the log is sent out is adjusted based on the reference position;
A cutting device for cutting the log at the blank portion;
Equipped with,
A paper roll manufacturing apparatus.

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