JP2003296694A - Sheet counter for corrugated fiberboard sheet manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately count the number of corrugated fiberboard sheets that can be ultimately shipped as products in a sheet counter for a corrugated fiberboard sheet manufacturing device. <P>SOLUTION: The sheet counter counts the number of corrugated fiberboard sheets manufactured by the corrugated fiberboard sheet manufacturing device. It is provided with an image pickup means 31 for picking up images of width direction end faces of corrugated fiberboard sheets 20 loaded on a stack part 192, and an image analyzing means 32 for counting the number of sheets by analyzing image information from the image pickup means 31 and recognizing each one of the corrugated fiberboard sheets 20 with respect to the image information on the basis of a flute specification of a corrugating medium forming the corrugated fiberboard sheet 20. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet number counting device for a corrugated board sheet manufacturing apparatus, which counts the number of corrugated board sheets manufactured by the corrugated board sheet manufacturing apparatus.

[0002]

2. Description of the Related Art In a double-faced corrugated fiberboard sheet manufacturing apparatus, a single facer is used to glue one side of the liner (back liner) to the other, and a double facer is used to make a single-sided sheet. A corrugated board sheet is produced by pasting the other liner (front liner) on the core side, and this corrugated board sheet is cut to an appropriate length by cutoff to manufacture a double-sided corrugated board sheet as a final product. Then, the corrugated board sheets are conveyed from the cutoff to the stacker by the conveyor and stacked on the stack section.

Conventionally, in such a corrugated board sheet manufacturing apparatus, a measuring roll which is rotated by being driven by the corrugated board is provided in a sheet conveying section upstream of the cutoff, and the corrugated board sheet is rotated based on the rotation amount of the measuring roll. Counting the number of sheets.

[0004]

However, in the above-described measuring roll, there is a case where the number of corrugated board sheets cannot be accurately counted due to slippage between the measuring roll and the corrugated board sheet. In addition, corrugated cardboard sheets that have a large warp or defective bonding may be removed as defective products during transportation, and such defective products are removed downstream of the measurement roll installation location. If this happens, the number of sheets counted using the measuring roll and the number of sheets of the final corrugated board will naturally be different.

The present invention was devised in view of such problems, and a sheet number counting device of a corrugated sheet manufacturing apparatus capable of accurately counting the number of corrugated sheet sheets that can be finally shipped as a product. The purpose is to provide.

[0006]

In order to achieve the above object, a sheet number counting device (Claim 1) of a corrugated sheet manufacturing apparatus of the present invention counts the number of corrugated sheet sheets manufactured by the corrugated sheet manufacturing apparatus. In the sheet number counting device, an image pickup means for picking up an image of the end face in the width direction of the corrugated cardboard sheets stacked in the stack portion, and image information from the image pickup means are analyzed, and the core raw paper for forming the corrugated cardboard sheet is analyzed. It is characterized by comprising image analysis means for recognizing each corrugated cardboard sheet for the image information based on the flute specifications and counting the number of sheets.

Further, the sheet number counting device (claim 2) of the corrugated board sheet manufacturing apparatus of the present invention is a sheet number counting apparatus for counting the number of corrugated board sheets manufactured by the corrugated cardboard sheet manufacturing apparatus, Sheet height detecting means for detecting the sheet height of the corrugated cardboard sheets stacked in the unit, and the number of sheets based on the sheet height detected by the sheet height detecting means and the thickness per corrugated sheet It is characterized in that it is configured with a calculation means for calculating.

Further, the sheet number counting device (claim 3) of the corrugated board sheet manufacturing apparatus of the present invention is a sheet number counting apparatus for counting the number of corrugated board sheets manufactured by the corrugated cardboard sheet manufacturing apparatus, Sheet height detecting means for detecting the sheet height of the corrugated cardboard sheets stacked in the unit, and the count number is increased each time the sheet height detected by the sheet height detecting means increases as compared with the previous detection. It is characterized in that it is provided with an arithmetic means for counting the number of sheets.

The sheet number counting device of the corrugated board sheet manufacturing apparatus according to any one of claims 1 to 3 is preferably provided with a sheet number printing means for printing the counted number of sheets. .

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (1) First Embodiment FIG. 1 is a diagram showing an outline of a corrugated board sheet manufacturing system according to a first embodiment of the present invention. First, a corrugated board sheet manufacturing system equipped with the sheet number counting device 30 according to the first embodiment of the present invention will be described.

The corrugated board sheet manufacturing system according to this embodiment comprises a corrugated board sheet manufacturing apparatus 1 and a production management apparatus 2 for controlling the corrugated board sheet manufacturing apparatus 1. The corrugated board sheet manufacturing apparatus 1 has a back liner preheater 1 that heats the back liner 20 as a main constituent device.
0, the core preheater 12 that heats the core 21, and the core 21 heated by the core preheater 12 are tiered along the sheet flow direction (forming flutes) and glued, and the back liner preheater 10 is used. A single facer 11 for bonding the heated back liner 20, a single-stage sheet preheater 13 for heating a single-stage sheet 22 formed by the single facer 11, a front liner preheater 14 for heating the front liner 23, a single-stage sheet preheater 13 for heating Double facer 1 for forming a corrugated cardboard sheet 24 by adhering a glue machine 15 for gluing to the formed one-sided sheet 22 and a one-sided sheet 22 glued by the glue machine 15 with a front liner 23 heated by the front liner preheater 14
6, cardboard sheet 2 formed by double facer 16
4, a slitter scorer 17 for performing scoring and grooving, and a corrugated cardboard sheet 24 for which scoring is performed by the slitter scorer 17
Cut-off 1 for producing a corrugated sheet (plate corrugated sheet) 25 as a final product by cutting the
8 and a stacker 19 for stacking the corrugated board sheets 25 in the order of completion.

The production control device 2 is provided with each of these devices 10, 1.
1, 13 to 16 are controlled appropriately, and as shown in FIG. 1, a controlled variable computing unit 4 and a process controller 5 are provided. The control amount calculator 4 is adapted to acquire production state information from a higher-level production management system (not shown).
Then, the control amount calculation unit 4 calculates each control amount according to the production state information and the machine state (operating state) of the corrugated board sheet manufacturing apparatus 1 acquired via the process controller 5, and controls the calculation result. It is designed to be output to the process controller 5 as a command. Further, the process controller 5 controls each control element based on a control command from the control amount calculation unit 4. In this way, the matrix control is performed by the control amount calculation unit 4 and the process controller 5 based on the production state information and the operation state information.

A sheet number counting device according to the first embodiment of the present invention will be described with reference to FIG. FIG. 2 is a diagram showing a sheet number counting device of the present embodiment, in which (a) is a schematic diagram showing its configuration,
(B) is a figure which shows the structure of the imaging means, Comprising: It is a typical Y part detail view of (a). The sheet number counting device 30 of the present embodiment includes a CCD camera 31 (imaging means, not shown in FIG. 2A) installed in the stack portion 192 of the stacker 19 and an image analysis device 32. The CCD camera 31 is movably attached to a rail 192a vertically provided on the stack portion 192 and has a drive mechanism (not shown). Stack part 1
The corrugated cardboard sheets 25 cut by the cutoff 18 are conveyed to a plurality of conveyors 191 and sequentially stacked on the sheet 92. The CCD camera 31 moves on the rail 192a and the width of the stacked corrugated cardboard sheets 20. The direction end surface (the end surface along the flow direction of the corrugated board sheet 20 and the surface on which the flute of the core 21 can be imaged) is imaged along the corrugated board sheet stacking direction.

Imaging information (image) of this CCD camera 31
Is output to the image analysis device 32. Information relating to the flute of the corrugated cardboard sheet 20 being manufactured (flute information) is input to the image analysis device 32 from the production management device 2 (or an operator inputs it from an input device not shown). Image), image analysis device 32
Analyzes the image based on the flute information and recognizes the corrugated cardboard sheets 20 in the image one by one to count the number of sheets.

To recognize the corrugated cardboard sheet 20, specifically, for example, the height / pitch of the flute (wave) is input as the flute information, and the image analysis device 32 images the shape of the flute based on these information. , CCD camera 3
If there is a portion in the image acquired by the step 1 that matches the shape of the flute, the portion is recognized as a corrugated cardboard sheet. Alternatively, the production management device 2 may store image data of the widthwise end face of the flute as flute information in advance for each of the various types of flutes, and output this to the image analysis device 32 as appropriate.

The number of sheets is displayed on a display device (not shown). The sheet number counting device according to the first embodiment of the present invention is configured as described above, and it becomes possible to accurately count the number of corrugated cardboard sheets manufactured by image analysis of the image pickup information of the CCD camera. There is an advantage that it is possible to accurately control the production of corrugated board sheets.

Further, since the number of sheets is counted in the stack section 192 at the tail end of the corrugated board sheet manufacturing apparatus, even if some corrugated board sheets 20 are taken out as defective products during the manufacturing process, this is excluded. It is possible to accurately count the number of sheets, that is, the number of corrugated cardboard sheets completed as a final product, and in this respect, there is an advantage that the production management of corrugated cardboard sheets can be accurately performed. (2) Second Embodiment A sheet number counting device as a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a schematic diagram showing the configuration of the sheet number counting device according to the present embodiment.
It is a figure corresponding to (b).

The sheet number counting device of this embodiment is
The displacement sensor 33 and the arithmetic unit 34 are provided. The displacement sensor 33 is provided on the ceiling surface 1 of the stack portion 192.
A vertical displacement amount, that is, a distance (hereinafter, also referred to as detection information) X between the sensor surface 33a installed on the sheet 92b and the uppermost corrugated cardboard sheet 20 among the corrugated cardboard sheets 20 stacked on the stack portion 192. Is to detect.

The detection information X of the displacement sensor 33 is output to the arithmetic unit 34. The arithmetic unit 34 includes a sensor surface 33a and a floor surface 192c of the stack portion 192.
Is stored in advance, and the arithmetic unit 34 detects the sheet height H from the difference between the detection information X and the distance L (H = L−X). in this way,
The displacement sensor 33 and the arithmetic unit 34 constitute the seat height detecting means of the present invention.

The arithmetic unit 34 also functions as the arithmetic unit of the present invention, and the thickness t per sheet of corrugated cardboard sheet 20 being manufactured is input from the production control unit 2 (or the operator shows it. The sheet count number N is calculated by dividing the height H by the thickness t (N).
= H / t). The sheet number counting device as the second embodiment of the present invention is configured as described above, and the same effect as that of the first embodiment can be obtained.

(3) Third Embodiment A sheet number counting device as a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a schematic diagram showing the configuration of the sheet number counting device according to the present embodiment.
It is a figure corresponding to (b).

The sheet number counting device of this embodiment is
The displacement sensor 33 and the arithmetic unit 34 'are provided, and the displacement sensor 33 is installed on the ceiling surface 192b of the stack portion 192 as in the second embodiment, and the sensor surface 33a and the stack portion 192b. The distance X from the uppermost corrugated cardboard sheet 20 of 192 is detected. The detection information from the displacement sensor 33 is output to the arithmetic unit 34 '. The arithmetic unit 34' determines whether or not the detected value X has decreased compared to the previous detection, that is, the sheet height H has increased. If it is detected whether or not the sheet count is increased or decreased, and if it is detected that the number is increased, it is determined that a new corrugated cardboard sheet 20 is stacked on the stack unit 192, and the sheet count number N
Is increased by 1 (N = N +
1).

If the detected distance X becomes equal to the distance L to the stack floor 192c, the arithmetic unit 34 'determines that the corrugated cardboard sheets are not stacked on the stack 192, and the sheet count number N becomes zero. It is supposed to be reset to. As a result, every time the corrugated board sheet 20 is unloaded from the stack unit 192, the sheet count N
Will be automatically reset to zero.

The arithmetic unit 34 'includes a stack unit 19
If the sheet height H of 2 increases, the sheet count number N is increased. However, the previous detection is performed so as not to unnecessarily increase the sheet count number N in response to variations in detection. If the magnitude (absolute value) of the variation ΔX of the detected value X with respect to time is equal to or greater than the predetermined value α, the sheet count number N may be increased. Of course, the predetermined value α is
The value is smaller than the sheet thickness t (α <t).

Since the sheet number counting device according to the third embodiment of the present invention is configured as described above, the sheet counting is performed every time the corrugated cardboard sheets 20 fed one by one are stacked on the stack portion 192. The number is counted up, and the same effect as that of each of the above embodiments can be obtained.
Further, since the flute specification and the sheet thickness are not required for calculating the sheet count number, there is an advantage that the control system can be simplified as compared with the above embodiment. (4) Others The sheet number counting device of the corrugated board sheet manufacturing apparatus of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

For example, as shown by a chain double-dashed line in FIGS. 2 to 4, for each embodiment, a label printer (sheet number printing means) 40 for printing the number of sheets together with the manufacturing date and the like.
May be added to the configuration. This makes production management easier. Further, in each of the above-described embodiments, the configuration in which the number of double-sided corrugated board sheets is counted has been described, but the sheet number counting device of the present invention is also applicable to counting the number of single-sided corrugated board sheets.

[0027]

As described above in detail, according to the sheet number counting device (Claim 1) of the present invention, the image information from the image pickup means is analyzed based on the flute specification of the core raw paper, and the stack information is stored in the stack portion. Since the number of stacked corrugated cardboard sheets is counted, there is an advantage that the number of corrugated cardboard sheets that can be finally shipped as a product can be accurately counted.

According to the sheet number counting device (Claim 2) of the corrugated board sheet manufacturing apparatus of the present invention, the stacking section is determined based on the sheet height of the corrugated board sheets stacked on the stacking section and the thickness of each corrugated board sheet. Since the number of stacked sheets is calculated, there is an advantage that the number of corrugated cardboard sheets that can be finally shipped as a product can be accurately counted, as in the first aspect.

According to the sheet number counting device (Claim 3) of the corrugated board sheet manufacturing apparatus of the present invention, the number of corrugated cardboard sheets is increased and the number of sheets is counted each time the sheet height of the stack portion is increased. In addition to the advantages of the above claims, there is an advantage that it is not necessary to input the flute specifications and the sheet thickness again each time the order of the corrugated board sheet is changed.

Further, by providing the sheet number printing means for printing the counted number of sheets, there is an advantage that the production control of the corrugated board sheet can be facilitated (claim 4).

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration of a corrugated board manufacturing system according to a first embodiment of the present invention.

2A and 2B are diagrams showing a sheet number counting device according to a first embodiment of the present invention, FIG. 2A is a schematic diagram showing a configuration thereof and a configuration of a stacker, and FIG. 2B is a configuration of a Y portion of FIG. It is a schematic diagram which shows.

FIG. 3 is a schematic diagram showing a configuration of a sheet number counting device according to a second embodiment of the present invention, and is a diagram corresponding to FIG. 2 (b).

FIG. 4 is a schematic diagram showing a configuration of a sheet number counting device according to a third embodiment of the present invention, and is a diagram corresponding to FIG. 2 (b).

[Explanation of symbols]

1 Corrugated board sheet manufacturing equipment 2 Production control device 3 knowledge database 4 Control amount calculation unit 5 Process controller 10 Back liner preheater 11 single facers 12 Core preheater 13 Single-stage seat preheater 14 Table liner preheater 15 glue machine 16 double facers 17 Slitter Scorer 18 cut off 19 Stacker 20 Back liner 21 Core 22 single-sided sheet 23 Table liner 24 Cardboard sheet 25 Cardboard sheet (product) 30 sheet number counting device 31 CCD camera (imaging means) 32 image analysis device (image analysis means) 33 Displacement sensor 33a Sensor surface 34, 34 'arithmetic unit 34a Reset button 40 Label printer (sheet number printing means) 191 Conveyor 192 Stack section 192a rail 192b Ceiling surface 192c floor Height of corrugated cardboard sheets stacked on the H stack section 192 Distance between L sensor surface 33a and stack floor N sheets Distance between X sensor surface 33a and cardboard sheet t Thickness of corrugated cardboard sheet 20

Claims (4)

[Claims] 1. A sheet number counting device for counting the number of corrugated cardboard sheets manufactured by a corrugated cardboard sheet manufacturing apparatus, comprising: imaging means for imaging an end face in the width direction of corrugated cardboard sheets stacked in a stack section; Image information from the means, and based on the flute specifications of the core raw paper forming the corrugated board sheet, an image analysis means for recognizing the corrugated board sheet for each of the image information and counting the number of sheets. A sheet number counting device for a corrugated cardboard sheet manufacturing device, which is characterized in that it is provided. 2. A sheet number counting device for counting the number of corrugated cardboard sheets manufactured by a corrugated cardboard sheet manufacturing apparatus, the sheet height detecting means for detecting a sheet height of corrugated cardboard sheets stacked in a stack section. And a calculating means for calculating the number of sheets based on the sheet height detected by the sheet height detecting means and the thickness of the corrugated board sheet per sheet. Sheet count device for corrugated board sheet manufacturing equipment. 3. A sheet number counting device for counting the number of corrugated cardboard sheets manufactured by a corrugated cardboard sheet manufacturing apparatus, the sheet height detecting means for detecting a sheet height of corrugated cardboard sheets stacked in a stack section. And a calculating means for counting the number of sheets by increasing the count number each time the sheet height detected by the sheet height detecting means is increased as compared with the previous detection. A sheet number counting device for corrugated board sheet manufacturing equipment. 4. The number of sheets in the corrugated board sheet manufacturing apparatus according to claim 1, further comprising a sheet number printing means for printing the counted number of sheets. Counting device.