JP3103619U - Sheet edge marking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting machine for cutting a roll of paper, paperboard, nonwoven fabric, film, or the like into a sheet shape, measure the number of cut sheets, and mark a fixed number of sheet edges with ink or the like. The present invention relates to a marking device to be attached. SUMMARY OF THE INVENTION It is an object of the present invention to provide a device which can overcome the drawbacks of the prior art and can accurately mark a designated position at a designated length following a change in cutting speed.
SOLUTION: A cutting speed, a cutting dimension, a distance from a marking head 24 to a photoelectric sensor 16 for counting the number of sheets, a position 9 to be marked on a sheet, and a timing calculated by an arithmetic expression using a marking length 10 as elements. Then, the marking head 24 is operated, and the marking 4 is formed at a predetermined position on the sheet edge following the increase or decrease of the cutting speed.
[Selection diagram] FIG.

Description

  The present invention relates to a marking device that measures the number of cut sheets in a cutting machine that cuts the winding of paper, paperboard, nonwoven fabric, film, and the like into sheets, and marks the sheet edges of each fixed number with ink or the like. . More specifically, in this marking device, the marking method is not a method of inserting a ticket of paper or film between sheets at a specified number of cuts (hereinafter referred to as a ticket insertion method). The present invention relates to an apparatus for forming a mark by attaching a pigment or a pigment.

  In a conventional cutting machine, as a method of measuring and marking the number of cut sheets, either a ticket insertion method or a method of directly attaching ink or pigment to a sheet edge has been adopted (for example, Patent Document 1 and Patent Document 1). 2). Each of these methods has advantages and disadvantages, and each has achieved its own development. FIG. 1 shows a cut sheet laminate 2 into which a ticket 1 is inserted. The method of inserting tickets in this style is relatively widespread, but the tickets must be inserted on the conveyor that conveys the sheets or in the layer that stacks the sheets, and the inserted tickets fall out in the subsequent process. There are drawbacks, for example, there is a case where the insertion is performed and the insertion is shifted.

  When a ticket is dropped, it is necessary to count the number of sheets again, and insertion into an erroneous location results in a count error. In addition, it often happens that tickets are mixed into products and shipped, causing serious troubles at customers. On the other hand, the method of directly attaching ink or the like to the sheet edge has a wide advantage, as can be understood from the figure shown in FIG. Although it has been known, the spread of the marking has been delayed due to difficulty in controlling the position and length of the marking.

  One of the reasons that this spread has been delayed is that the marking device using ink or the like must be installed upstream of the rotor knife device that cuts the sheet in the longitudinal direction. It is necessary to calculate back. In addition, since the speed of the cutting machine changes frequently due to various factors, the control of the marking device cannot keep up and the marking position shifts, and in some cases, the marking adheres to the next sheet to be attached, Sometimes I made a mistake. In the prior art, it is difficult to capture all of these factors as calculation elements.The relationship between the operation timing of the marking device is stored as a "speed-operation timing correlation table" based on the sheet length and the detected speed of the cutting machine. Was to be activated. As a result, every time the speed changes due to a pallet change, it is inevitable that the marking position changes as shown in FIG. Also, it has been difficult to accurately perform marking at an arbitrary position in the paper length direction (flow direction).

  Conventionally, in a cutting machine that cuts several sheets of paper or film from a roll state and cuts them into a certain size, the technology of measuring the number of cut sheets regardless of the cutting speed is based on photoelectrically controlling the rotation of the cutting rotor knife. It has been established conventionally by a method of detecting with a sensor or a method of detecting the edge of a cut sheet with a photoelectric sensor. More specifically, referring to the drawings, FIG. 4 shows a schematic side view of the cutting machine. The rolls 23 to be cut, which are supplied as a roll, are hung on an unreel stand 22 and are superposed and introduced into the slitter section 14, where the width direction is first cut to a designated width. Next, it is sent to a cutting rotor knife 26 which cuts the flow direction to a specified length by a draw roll 25. The sheet that has been cut off in the flow direction flows into a stacking section (ray boy) 28 by a conveyor 27. Generally, a reject gate for discharging a defective sheet indicated by 17 out of the system is often provided on this conveyor. Further, the transport conveyor 27 is divided into several parts, and these conveyors have a speed difference, and have a mechanism in which sheets are partially overlapped (wrapped) while being transported. Therefore, the measurement of the number of sheets can be accurately detected from the line of the cutting machine as a multiple of the number of sheets to be cut.

  In general, a ticket insertion device, which is a device for making a mark for each designated cut, is installed at a position 19, 20, or 21 in FIG. Therefore, since the calculation of the insertion timing can be provided immediately downstream of the photoelectric sensor 16 for detecting the cut edge of the sheet, the calculation is simple and the tracking and correction are simple and accurate. However, the device that inserts the ticket at the position 19 has a drawback in that the problem of frequent drop of the ticket during transportation on the conveyor occurs frequently, as easily estimated from the insertion position. Also, it is designed that a ticket insertion device is installed in the lamination part (Layboy) of the sheet, such as 20, 21, but in this case, the insertion of the ticket is shifted, and between the cuts before and after the cut to be inserted. A disadvantage is that it is inserted incorrectly.

On the other hand, since the marking head 24 made of ink or the like is installed near the slitter 14 upstream of the cutting rotor knife, the number of cuts to be marked does not change, and it is not possible to fall off. It has been extremely difficult to correct the marking position while detecting the cut edge of the sheet detected downstream with the photoelectric sensor 16 and performing the back calculation of the operation of the sheet edge marking system. In addition, since the speed of the cutting machine frequently changes due to various factors, the biggest drawback is that, in general, when the sheets are stacked as shown in FIG. there were.
JP-A-9-249346 JP 2003-238018 A

  Therefore, starting from these known technologies, the problem underlying the present invention is to overcome the drawbacks of these known technologies and follow the change in cutting speed to accurately mark the specified length at the specified position. It is an object of the present invention to provide a device capable of performing such operations. By solving this problem, it is possible to mechanize and save labor in a post-process such as a sheet packaging process, and it is possible to reduce costs.

According to the present invention, this problem is measured by using a cutting machine that cuts a roll of paper, paperboard, nonwoven fabric, film, etc. into a sheet shape, and measures the number of cut sheets, and marks the sheet edge of each fixed number with ink or the like. In the marking device to attach,
The marking head is operated at the timing calculated by an arithmetic expression using the cutting speed, cutting dimensions, distance from the marking head to the photoelectric sensor that counts the number of sheets, the position to be marked on the sheet, and marking length as elements, and cutting. The problem is solved by a marking device configured to mark a fixed position on a sheet edge following an increase or decrease in speed.
The present invention is characterized in that, in the above-mentioned invention, the marking member of the marking head is in a saber shape or a disk shape.
Further, the present invention is characterized in that, in the above invention, a mechanism for operating the marking member is any one of an air cylinder, a hydraulic cylinder, and an electromagnetic actuator.
Further, in the present invention, in the above-described invention, the detection mechanism of the cutting speed is configured to be based on either a rotation signal of the cutting rotor knife or by calculating by detecting a cut edge of the cut paper with a photoelectric sensor. It is characterized by having.
Further, the present invention is characterized in that, in the above-mentioned invention, the material of the marking is any one of oil-based ink, water-based ink, and solidified chalk of various pigments.
Further, in the present invention, in the above invention, the number of rejected sheets is counted by a signal of a reject device for a defective sheet provided downstream of a cutting knife that cuts the winding into a sheet shape, and the number of marking cuts is corrected. It is characterized by comprising.
In addition, the present invention provides a mechanism in which the cutting machine is stopped and the stacked sheets are taken out, or the sheet is temporarily held with a fork or a table at an operating speed, and the sheet is continuously operated while being operated. In any of the methods of taking out the stacked sheets, it is characterized in that it is configured to be able to add a specified number of designated preliminary sheets above and below the laminate in addition to the prescribed number of cuts of the sheet laminate. And
Further, the present invention is characterized in that, in the above-mentioned invention, the operation timing of the marking head is arithmetically corrected according to the increase or decrease of the speed of the cutting machine, so that the marking position is not shifted.

In the present invention, a system for calculating and correcting these elements that change in microseconds by the CPU has been developed, and following the frequent change in the speed of the cutting machine which cannot be realized by the conventional technology, the system is designated as shown in FIG. It is now possible to achieve marking of a specified length in a specified location.
Further, by incorporating the signal of the reject gate, it is possible to correct the discharge of defective paper out of the system and form a sheet laminate.
Furthermore, in many cases, a few cuts of spares are required on the part directly in contact with the pallet and on the top of the laminate, and this system has made it possible to add accurate spares even in a continuous cutting system. Therefore, it is possible to produce an effect that the working efficiency of the processes after the cutting machine, that is, the sorting process, the packaging process, and the like are remarkably improved.

  Next, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a cut sheet laminate in which a ticket is inserted by a ticket insertion method which is a technique opposed to the present invention. The cut sheet laminate 2 is placed on the pallet 3, and the ticket 1 is inserted every predetermined number of the cut sheet laminates.

  FIG. 2 is a schematic diagram of a sheet laminate using the sheet edge marking device of the present invention. As in FIG. 1, the cut sheet laminate 5 is placed on the pallet 6. However, for each predetermined number of the cut sheet laminate, the marking is directly attached to the sheet edge using ink or the like. Have been.

  FIG. 3 shows a change in the marking position according to the prior art, and shows a situation in which the mark attached to the sheet edge cannot keep up with the change in the speed of the cutting machine and shifts.

  FIG. 4 is a schematic side view of a cutting machine equipped with a conventional ticket insertion device. In this figure, the ticket insertion head is mounted at any one of the reference numerals 19, 20, and 21. FIG. 5 is a schematic side view of the cutting machine equipped with the sheet edge marking device according to the present invention. The configuration of the apparatus according to the present invention is as follows. The proximity switch of reference numeral 15 or the photoelectric sensor of reference numeral 16 detects the number of rotations of the cutting rotor knife 26 or the cut edge of the sheet, and the CPU performs arithmetic processing. Is configured to attach ink and the like to the sheet edge. In FIG. 5, the same reference numerals as in FIG. 4 are given to the portions having the same function as in FIG.

  FIG. 6 shows a saber-like marking head used in the present invention. The saber 34 is fixed to a saber mounting bracket 36, which is connected via a guide 30 to a cylinder 38 fixed to the cylinder mounting bracket 33. The cylinder mounting bracket 33 is mounted on the frame 31. The frame 31 is further provided with an ink box guide 32, and the ink box guide 32 is provided with an ink box 35 belonging thereto. An ink pad 39 is provided on the saber 34 side of the ink box 35. Reference numeral 37 denotes a return spring.

  FIG. 7 shows still another disk-shaped marking head used in the present invention. A solenoid box 51 is fixed to the ink marker mounting base 52, and a solenoid 53 for vertically operating a disk-type marking member in this embodiment is mounted on the solenoid box 51. The solenoid 53 is connected to a mechanism of a roller 57 via a shaft 55. The shaft 55 is slidable in a cylinder 56, and a spring 54 enables a return operation below. Reference numeral 58 is an ink receiver.

  FIG. 8 is a sequence diagram for calculating the ink marking timing of the present invention.

  FIG. 9 is a block diagram for calculating the ink marking timing of the present invention.

The sheet edge marking apparatus according to the present invention uses a cutting speed, a cutting dimension, a distance from the marking head 24 to the photoelectric sensor 16 for counting the number of sheets, a position 9 to be marked on the sheet, and a marking length 10 as elements. The marking head 24 is actuated at the timing calculated in step (1), and marking 4 is performed at a fixed position on the sheet edge following the increase or decrease in the cutting speed.
As shown in FIG. 2, the sheet edge marking apparatus of the present invention realizes the marking position with an accuracy of mm while correcting the marking position to follow the speed. More specifically, in the present invention, the timing for operating the marking head is calculated by a combination of certain elements.
That is, the operation timing T can be calculated by a combination of the following elements.
Length of cutting sheet (cutting dimension) (L1)
Sheet marking start position (L2)
Marking length of sheet (L3)
Length from marking head to sheet cut edge photoelectric sensor (L4)
Cutting machine speed (S)

Among these values, the speed S of the cutting machine can be easily given by the proximity switch 15 for measuring the rotation signal of the cutting rotor knife 26 and the detection by the photoelectric sensor 16 of the sheet edge, as described above. Further, the cutting length L1 and the width are values that should be naturally given as general setting items of the cutting machine.
However, after being cut by the cutting rotor knife 26 in the cutting machine, the sheet is conveyed by the high-speed conveyance conveyor 27 rotating at a speed slightly faster than the peripheral speed of the rotor knife because a gap is formed. Therefore, it is necessary to always perform the timing correction for this, and if this timing is not correct, the marking position will be shifted as shown in FIG.

  These numerical values are composed of values specific to the cutting machine from the signal of the cutting machine and values inputted by the operator of the cutting machine. These values are shown in FIG. 8 by a combination of a computer and a sequencer. By performing the control in such a calculation flow sheet, as shown in FIG. 2, the marking is provided at the designated place with the designated length of ink or the like.

  According to the present invention, a system for calculating and correcting an element that changes in microseconds by a CPU has been developed. The system follows a frequent change in the speed of a cutting machine, which cannot be realized by the conventional technology, and is provided at a location designated as shown in FIG. It is possible to realize the marking of the length specified in.

FIG. 3 is a schematic view of a sheet laminate using a marking device by ticket insertion, which is a technology opposed to the present invention. FIG. 2 is a schematic view of a sheet laminate using the sheet edge marking device of the present invention. It is the schematic which showed the situation which the mark attached to the sheet edge in the prior art of sheet edge marking could not follow the change of the speed of a cutting machine, but shifted. It is a side schematic diagram of the cutting machine equipped with the ticket insertion apparatus which is a prior art. 1 is a schematic side view of a cutting machine equipped with a sheet edge marking device of the present invention. It is a saber-shaped ink marking head used in the present invention. It is a disk-shaped ink marking head used in the present invention. FIG. 5 is a sequence diagram for calculating the ink marking timing of the present invention. FIG. 4 is a block diagram for calculating the ink marking timing of the present invention.

Explanation of reference numerals

REFERENCE SIGNS LIST 1 ticket 2 cut sheet laminate 3 pallet 4 marking 5 cut sheet laminate 6 pallet 7 designated spare sheet 8 designated spare sheet 9 marking start position, marking position 10 marking length 11 marking 12 cut sheet laminate 13 pallet 14 slitter 15 Proximity switch 16 Photoelectric sensor 17 Reject gate, reject device 18 Proximity switch 19 Ticket insertion head (A)
20 Ticket Insertion Head (B)
21 Ticket Insertion Head (C)
22 Unreel Stand 23 Roll to be Cut 24 Marking Head 25 Draw Roll 26 Cutting Rotor Knife 27 Conveyor 28 Ray Boy 30 Guide 31 Frame 32 Ink Box Guide 33 Cylinder Mounting Bracket 34 Saber 35 Ink Box
36 Saber mounting bracket 37 Spring 38 Cylinder 39 Ink pad 51 Solenoid box 52 Ink marker mounting base 53 Solenoid 54 Spring 55 Shaft 56 Cylinder 57 Roller 58 Ink tray

Claims (8)

In a cutting machine that cuts the winding of paper, paperboard, nonwoven fabric, film, etc. into sheets, the number of cut sheets is measured, and a marking device that marks the sheet edge of each fixed number with ink or the like,
The arithmetic expression is composed of cutting speed, cutting dimension, distance from the marking head (24) to the photoelectric sensor (16) for counting the number of sheets, position (9) to be marked on the sheet, and marking length (10). A marking device configured to actuate the marking head (24) at the calculated timing to mark (4) a predetermined position on the sheet edge in accordance with an increase or decrease in the cutting speed.   The marking device according to claim 1, wherein the marking members (34, 57) of the marking head (24) have a saber shape or a disk shape.   The marking device according to claim 2, wherein the mechanism (38, 53) for operating the marking member (34, 57) is any one of an air cylinder, a hydraulic cylinder, and an electromagnetic actuator.   The mechanism for detecting the cutting speed is configured to be based on either the rotation signal of the cutting rotor knife (26) or by detecting the cut edge of the cut paper with the photoelectric sensor (16) and calculating. The marking device according to claim 1, wherein:   2. The marking device according to claim 1, wherein a material of the marking is one of oil-based ink, water-based ink, and solidified chalk of various pigments.   The number of rejected sheets is counted by a signal of a rejection device (17) of a defective sheet provided downstream of a cutting knife for cutting the winding into a sheet shape, and the number of marking cuts is corrected. The marking device according to claim 1, wherein:   A mechanism that stops the cutting machine and removes the stacked sheets, or a mechanism that temporarily holds the sheet stack with a fork or table at the operating speed and removes the stacked sheets continuously while operating In any case, in addition to the prescribed number of stack cuts of the sheet laminate (5), a plurality of designated spare sheets (7, 8) can be added above and below the laminate. The marking device according to claim 1, wherein 2. The marking device according to claim 1, wherein the operation timing of the marking head is arithmetically corrected in accordance with an increase or a decrease in the speed of the cutting machine so that the marking position is not shifted. .

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