JP2003001727A - Machine for making corrugated card board sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a mechanical load, the vibration of a machine, and noise in a machine for making a corrugated card board sheet to at least keep productivity, and to improve the productivity. SOLUTION: In the machine for making the corrugated card board which machines supplied sheets desirably, the interval between the sheets is composed of the space of a sheet length, or a means for supplying the sheets at intervals with a clearance opened between the sheets, a means for grasping the supply condition of the sheets to be supplied, a driving means for driving/rotating a processed body at a variable speed, and a driving control means for controlling the driving means. Rotation which grasps the supply condition of the sheets to be supplied and makes the rotation of the processed body agree with the traveling speed of the sheets and rotational speed control for making rotation variable speed to rotation are done. When the processed member of the processed body contacts the sheet to be supplied, a rotational speed is made to agree with the traveling speed of the sheets.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to processing in which each processing member is attached in order to perform arbitrary printing, ruled lines, grooving, punching, etc. in accordance with sheet feeding and sheet conveyance of a plate-shaped corrugated cardboard sheet. The present invention relates to a cardboard sheet box making machine that controls the rotation speed of a cylinder.

[0002]

2. Description of the Related Art The construction of a cardboard sheet box making machine 1 is shown in FIG.
As shown in FIG. 3, a paper feed unit 3 that mainly feeds the corrugated cardboard sheet S, a first printing unit 9 and a second printing unit 20 that print on the fed corrugated cardboard sheet S, a creaser unit 31 that performs ruled line processing, It comprises a slotter unit 36 for grooving and a die cutting unit 51 for punching. In the corrugated board box making machine 1, the combination of each of these units varies depending on the purpose of production and the like. When three-color printing is performed, there are three printing units, and when there is no purpose of punching, a die-cut unit is combined. There are none.

The sheet feeding unit 3 stacks the corrugated cardboard sheets S on the sheet feeding table 4 and feeds the corrugated sheet S from the lowermost corrugated sheet S one by one and holds them by the feed rolls 6a and 6b. And sent to the downstream process.

The first and second printing units 9 and 20 respectively include a printing cylinder 10 and a printing cylinder 10 on which printing plates 11 and 22 are wound.
21, ink transfer rolls 12 and 23, and squeeze roll 1
3, 24 are provided, and the respective ink transfer rolls 1 are provided.
2, 23 and the squeezing rolls 13, 24 are used to supply ink to an ink reservoir formed by an ink supply device (not shown), and the supplied ink is transferred to the ink transfer roll 1
2, 23 and the squeezing rolls 13, 24 are squeezed to form an appropriate film on the outer peripheral surfaces of the ink transfer rolls 12, 23, and the stencil is transferred to the printing plates 11, 22. Cardboard sheet feeding line P
Press rolls 15 and 26 are disposed at positions facing the above-described printing cylinders 10 and 21 with L interposed therebetween, and the corrugated sheet S conveyed is wound around the printing cylinders 10 and 21, respectively, and printing plates 11 and 22 are provided. And press roll 15,2
6 and hold it to perform desired printing. Further, sheet conveying devices 14 and 25 are arranged in the printing units 9 and 20, respectively. There are various types of sheet conveying devices 14 and 25, for example, FIG.
As the sheet conveying devices 14 and 25 shown in FIG. 0, a device that sucks the corrugated cardboard sheet S to the feeding members 16 and 27 by suction and conveys the corrugated cardboard sheet S is disclosed.

Subsequently, the creaser unit 31 is provided with an upper ruled line roll 32 and a lower ruled line roll 34 with the corrugated cardboard sheet feeding line PL interposed therebetween, and applies a ruled line to a desired position of the corrugated cardboard sheet S to be fed. A sheet conveying device 33 similar to the printing units 9 and 20 is also arranged in the creaser unit 31 and sucks the sheet to the sheet feeding member 35 by suction to convey the sheet.

The slotter unit 36 has a slotter having two slotter knives attached to one slotter shaft, which is referred to in the art as a single slotter, and one slotter knife attached to one slotter shaft, and two sets of the slotters are provided. Two slotters called double slotter in the industry
There are types. The slotter disclosed in FIG. 10 discloses an example of the latter double slotter, in which an upper first slotter 37 having a first slotter knife 38 and a lower slotter with a corrugated cardboard sheet feeding line PL on the upstream side. One slotter 41 is arranged, and an upper second slotter 39 having a second slotter knife 40 and a lower second slotter 42 are arranged downstream of the corrugated cardboard sheet feeding line PL, and the slotter unit 36 is provided. Is configured.
Then, the first slotter knife 38 and the lower first slotter 41 of the upper first slotter 37, and the second slotter knife 40 and the lower second slotter 42 of the upper second slotter 39, respectively, of the corrugated cardboard sheet S to be fed. Groove is cut at a desired position. Also in the slotter unit 36, the sheet conveying device 4 similar to the printing units 9 and 20 is provided.
3 is provided, and the sheet is conveyed to the sheet feeding member 44 by suction by suction.

The die-cut unit 51 is provided with a die cylinder 52 and an anvil cylinder 54 to which a punching die 53 is attached so as to sandwich the corrugated board sheet feeding line PL, and punches the corrugated board sheet S to be fed at a desired position. Give.

The units 3, 9, 20, 31, 36, 51 of the corrugated board sheet box making machine 1 are arranged such that the units 3, 9, 20, 31, 31, 36, 51 are formed by gears or line shafts not shown. They are connected and driven by the drive of the main drive device 8 by transmitting a driving force. Then, the main drive unit 8 is activated based on a command from the main control unit 68.

In the corrugated board sheet box making machine 1 configured as described above, the corrugated board sheet S fed from the sheet feeding unit 3 is conveyed by the respective sheet conveying devices 14, 25, 33, 43 while Desired printing is performed in the second printing units 9 and 20, ruled line processing is performed in the creaser unit 31, grooving processing is performed in the slotter unit 36, and punching processing is performed in the die cutting unit 51.

Generally, in the corrugated board sheet box making machine 1, each unit 3, 9, 20, 3 is driven by the main drive unit 8.
1, 36, 51 are operated at a desired speed. The printing cylinders 10, 21 of the printing units 9, 20
When the upper first and second slotters 37 and 39 of the slotter unit 36 and the die cylinder 52 of the die-cut unit 51 each make one rotation, the corrugated cardboard sheets S fed by the respective units 9, 20, 36 and 51
Each is processed. The paper feeding unit 3 mechanically or electrically feeds the corrugated board sheets S one by one in a predetermined cycle in accordance with the operating speed of each of the units 9, 20, 36, 51. That is, the above-described corrugated board sheet box making machine 1 is provided with the printing cylinders 10 and 2 while the corrugated board sheet box making machine 1 is operating at a desired speed.
This is a so-called intermittent sheet feeding and sheet feeding operation method in which one sheet is fed when the first, second and second slotters 37 and 39 and the die cylinder 52 rotate once. Since each unit 3, 9, 20, 31, 36, 51 is driven by the main drive unit 8, the printing cylinders 10, 21 and the upper first and second slotters are, for example, as shown in FIG. Assuming that the effective machining circumferential lengths of 37, 39 and the die cylinder 52 are Lmm, the corrugated cardboard sheet length that can be processed is Lmm below. Therefore, when the length of the corrugated board sheet is Lmm which is the same as the circumference of the processing cylinder, the corrugated board sheet is conveyed and processed in a state where there is almost no gap between the corrugated board sheets S fed by the paper feeding unit 3. Is less than the circumference of the processing cylinder, the length of the corrugated board to be processed is subtracted from the circumference of the processing cylinder between the corrugated board sheets S, for example, L5 mm intervals equally divided in the front and rear direction of the corrugated board sheet are opened to feed the corrugated board. Will be done.

[0011]

In recent years, the corrugated board industry has realized high production by operating the corrugated board box making machine 1 at a high speed of, for example, 250 to 300 sheets per minute even though it is a high-mix low-volume production. Is required. However, in order to operate the corrugated board box making machine 1 at high speed, in addition to improving the performance of the corrugated board sheet box making machine 1 and equipping a large-sized drive device, the rigidity of the machine and each processing shaft and bearing. We must also increase the strength of such things.
The higher the speed of operation, the greater the mechanical load, which leads to vibration and noise. Furthermore, the higher the speed of operation, the more the cardboard sheet box making machine 1
Corrugated cardboard sheet processing and conveyance conditions inside become worse.
Specifically, since a printing plate that rotates at high speed comes into contact with a corrugated cardboard sheet that runs at high speed, defective printing is likely to occur. In addition, since the corrugated cardboard sheet is conveyed at a high speed during sheet conveyance, the impact becomes large when it comes into contact with a printing plate, a slotter knife, or a contact portion (not shown) such as a sheet guide, which causes a sheet conveyance deviation. Will also be.

In order to increase the rigidity and strength of the machine and reduce the mechanical load for high-speed operation, the frame, each shaft or bearing of the corrugated cardboard sheet box making machine 1, and further the individual parts are made sturdy. Although it may be possible to manufacture it in the first place, there is a problem that the manufacturing cost is high and the selling price cannot meet the market needs. Even if the cardboard sheet box making machine 1 itself is made strong and the mechanical load is reduced, even the vibration and noise generated when the cardboard sheet S is passed through the cardboard sheet box making machine 1 at a high speed. It cannot be resolved. Therefore, a means for improving the rigidity and strength of the corrugated board sheet box making machine 1 itself is not a fundamental problem to be solved.

Further, since the paper is fed at a high speed, a paper feed error is likely to occur, and a jam in the cardboard sheet box making machine 1 also occurs. In this way, once a paper feed error or jam occurs, the corrugated board sheet box making machine 1 must be temporarily stopped and these trouble avoiding means must be taken, so that the machine operating efficiency decreases. Also, when a jam occurs, the operator immediately stops the paper feeding, but since the paper feed operation is performed at a high speed, the paper feeding is performed at a high speed even while the operator operates the paper feed stop. If it is performed and jamming occurs once, a large amount of corrugated board sheets S may remain in the corrugated board sheet box making machine 1 and all of the corrugated board sheets S may be defective. Further, the above-mentioned troubles are more seriously damaged as the speed of the corrugated board sheet box making machine 1 is increased.

In view of the problems inherent in the above-mentioned conventional techniques, the present invention has been proposed in order to suitably solve the problems, and the mechanical load and the machine are suppressed while the machine manufacturing cost is suppressed to the maximum. The purpose is to reduce the vibration and noise of at least, maintain at least the productivity, and further improve the productivity.

[0015]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and preferably achieve an intended purpose, the present invention provides a sheet feeding unit for a sheet-shaped corrugated cardboard sheet in response to a command from a main controller. Paper is fed at a desired speed from the sheet feeding device, and a processing member is attached to a corrugated cardboard sheet that is fed in a downstream process of the sheet feeding unit to perform desired processing such as printing, grooving or punching by a rotating processing body. In a corrugated cardboard box box making machine, means for detecting the arrival of a corrugated cardboard sheet fed from the paper feed unit, which is arranged upstream of the processed body, and a drive for rotationally driving the processed body at a variable speed. Means and drive control means for controlling the variable speed rotary drive of the drive means, and the drive control means receives the feeding speed of the corrugated board sheet fed from the main control device and is fed. Hand detecting the arrival of corrugated cardboard sheets Receiving the corrugated cardboard sheet feed arrival information from the corrugated board, rotational speed control for matching the processed member mounted on the processed body with the feeding speed of the corrugated cardboard sheet to be fed, and feeding of the corrugated cardboard sheet to be fed. When the machined member mounted on the machined body comes into contact with the corrugated sheet to be fed, the machined body is stopped when the machined member attached to the machined body comes into contact with the machined body. It is a corrugated board box making machine that performs processing by controlling the rotational speed of the mounted processing member so as to match the feeding speed of the corrugated cardboard sheet to be fed.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a corrugated board sheet box making machine according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments. The basic structure of the corrugated board box making machine 1 is the same as that of a conventional corrugated board box making machine, and therefore detailed description thereof will be omitted.

As shown in FIG. 1, the corrugated board sheet box making machine 1 according to the present invention comprises a paper feed unit 3, a first printing unit 9, a second printing unit 20, a cleaner unit 31, a slotter unit 36, and a die cutting unit 51. Become. In the corrugated board box making machine 1 of the present invention, unless the corrugated board box making machine 1 in production operation has a special reason, in principle, the corrugated board sheet S is conveyed at a paper-passing speed at which the speed is not intentionally changed. However, the paper feeding method is not the intermittent paper feeding method of the related art, and basically, the paper feeding device 5 of the paper feeding unit 3 is provided between the preceding corrugated cardboard sheet Sn and the succeeding corrugated cardboard sheet Sn + 1. A paper feeding method and a paper feeding device that feed continuously without a gap. Therefore, there is no space between the fed corrugated cardboard sheets, and
The length of the fed corrugated cardboard sheet and at least the printing cylinders 10, 21 of the first and second printing units 9, 20;
Upper first and second slotters 3 of the slotter unit 36
7, 39 and the die cylinder 52 of the die cut unit 51 do not have the same circumference, the corrugated cardboard sheet S
The rotation speed is variable regardless of the sheet passing speed. However, the length of corrugated cardboard sheet to be fed and each processing cylinder 10, 21, 3
When the peripheries of 7, 39, 52 are the same, the feeding speed of the corrugated cardboard sheet S and the processing cylinders 10, 21,
Since the synchronous rotation speeds of 37, 39, 52 are sufficient, the variable speed rotation control of each processing cylinder 10, 21, 37, 39, 52 is not performed. In the present invention, each of the processed bodies 10, 21, 37, 39, such as printing, slotter, die cutter, etc.
52, processing members 11, 22, 38, 40,
Since a desired processing is performed on the corrugated cardboard sheet S fed with the attached 53, the target diameter of the rotation speed to be matched with the feeding speed of the corrugated cardboard sheet S fed in the following description is With the processing members 11, 22, 38, 40, 53 attached to the 10, 21, 37, 39, 52, respectively, the respective processing members 11, 22, 38,
40 and 53 are rotation speeds at so-called theoretically set theoretical circumference diameters that are optimum processing conditions when processing the corrugated board sheet S. Therefore, it is not the rotational speed at the outer diameter of each of the printing cylinders 10 and 21 and the die cylinder 52, for example.

First, the sheet feeding unit 3 is not a sheet feeding device of the intermittent sheet feeding type as in the prior art, but as described above, basically the sheet feeding unit 3 continuously feeds the corrugated cardboard sheets S without opening the respective intervals. It is equipped with a paper feeding device 5 of paper type. Specifically, the sheet feeding device 5 of the sheet feeding unit 3 is operated at a desired sheet feeding speed by the main driving device 8 which receives a command from the main control device 2, and the corrugated sheet sheet at the lowermost layer on the sheet feeding table 4. Paper is fed in order from S toward the downstream process.
Therefore, the lowermost corrugated cardboard sheet S on the paper feed table 4 is
When the paper is fed, the next corrugated board sheet S is also fed continuously to contact the paper feeding device 5. At this time, there is theoretically no gap between the first-fed corrugated cardboard sheet Sn and the second-fed corrugated cardboard sheet Sn + 1, but in reality, there is no gap between the first-fed corrugated cardboard sheet Sn and the first-fed corrugated cardboard sheet Sn. ,
Since there is a time lag in which the next fed corrugated board sheet Sn + 1 falls on the feeding table, there is a slight gap between the first fed corrugated board sheet Sn and the next fed corrugated board sheet Sn + 1. The gap will be open. In the present invention, the above-described paper feeding method is basically referred to as a continuous paper feeding method with no gaps. As described above, the paper feeding unit 3 needs to continuously feed the corrugated paperboard sheets S, and thus is driven by the main driving device 8 which operates at a desired paper passing speed. Therefore, the feed rolls 6a and 6b are also rotated at a speed synchronous with the sheet passing speed.

Further, the sheet feeding unit 3 is provided with a sheet feeding detector 7 for detecting whether or not the sheet feeding device 5 has certainly fed the sheet and conveyed it to the downstream process. The detection information of the paper feed detector 7 is transmitted to the main control device 2, and the control device 18 of the first printing unit 9 or each of the other units 2 to be described later.
The control information is transmitted to the respective control devices 29, 46, 49, 56 of 0, 36, 51 and serves as control information for processing the corrugated cardboard sheet S to which the respective units 9, 20, 36, 51 are fed.

Next, since the upper and lower ruled line rolls 32 and 34 of the creaser unit 31 also have a ruled line shape in the circumferential direction, the upper and lower ruled line rolls 32 and 34 are irrespective of the corrugated sheet S to be fed. Since the same processing can be performed at any position in the upper and lower ruled line rolls 32 and 34, the corrugated board sheet feeding speed and the synchronous rotation speed are sufficient, and the sheet feeding member 35 of the sheet conveying device 33 is also operated similarly. Therefore, the creaser unit 31 is controlled by the main controller 2 and is driven by the main driving device 8 that rotates in synchronization with the corrugated board sheet feeding speed.

The sheet conveying devices 14, 25, 43 of the processing units 9, 20, 36 are provided with the processing cylinders 10 to which the processing members 11, 22, 38, 40 of the processing units 9, 20, 36 are attached. , 21, 37, 39 regardless of the rotation of the paper feeding unit 3, and has a role of feeding the corrugated board sheet S fed from the paper feeding unit 3 to the downstream process at a desired speed. Since the corrugated board sheet feeding speed and the synchronous rotation are always required as in the case of the unit 31, it is driven by the main drive device 8 which is controlled by the main controller 2 and rotates in synchronization with the corrugated board sheet feeding speed. Further, the press rolls 15 and 26 of the first and second printing units 9 and 20, the lower first slotter 41 and the lower second slotter 42 of the slotter unit 36, and the anvil cylinder 54 of the die cutting unit 51 are made of corrugated cardboard sheet S. Since it has a role of transporting the sheet to the downstream process, it is controlled by the main controller 2 and driven by the main driver 8 that rotates in synchronization with the corrugated board sheet feeding speed.

That is, in the present invention, the paper feeding unit 3, the creaser unit 31, the press rolls 15 and 26 of the first and second printing units 9 and 20, the lower second slotters 41 and 42 of the slotter unit 36, and the die cutting unit. Anvil cylinder 54 and each sheet conveying device 1
4, 25, 33, and 43 are driven by the main drive device 8 at a corrugated sheet feeding speed and a synchronous rotation speed.

Next, the first and second printing units 9 and 2
The 0 printing cylinders 10 and 21 are the first printing unit drive controller 18 that controls the rotation speed of the printing cylinder 10 of the first printing unit 9, and the second printing that controls the rotation speed of the printing cylinder 21 of the second printing unit 20. In response to a command from the unit drive control device 29, the variable speed first printing unit drive device 17 and the variable speed second printing unit drive device 28 are rotationally driven. Then, first and second printing unit corrugated sheet detectors 19 and 30 for detecting arrival of the corrugated sheet S to be fed are provided on the upstream sides of the corrugated sheet conveying directions of the first and second printing units 9 and 20, respectively. It is arranged. Each time the corrugated board sheet S passes through the detectors 19 and 30, for example, the leading end of the corrugated board sheet S or a desired position in the corrugated board sheet is detected by the sheet detectors 19 and 30 and detected. The passage information of the corrugated board sheet S is provided to the first and second printing unit drive control devices 18, 29, respectively.
Send to. The first and second printing unit drive control devices 18, 29, which receive the corrugated board sheet detection information from the detectors 19, 30 and the production information from the main control device 2 in advance, respectively, And the second
The printing unit driving devices 17 and 28 are driven to control the rotation of the first and second printing cylinders 10 and 21. In addition, the ink transfer rolls 12 and 23 and the squeeze rolls 13 and 24 of each printing unit follow the respective printing cylinders 10 and 21 and their rotational speeds are controlled.

Subsequently, the first and second slotters 37 and 39 of the slotter unit 36 are provided with a first slotter drive controller 46 and a second slotter drive controller 46 for controlling the rotation speed of the first slotter 37.
The variable speed first slotter driving device 45 and the variable speed second slotter driving device 48 rotate the rotation of the slotter 39 according to a command from the second slotter drive controller 49 that controls the rotation speed of the slotter 39. First and second slotters 37, 3
First and second slotter corrugated cardboard sheet detectors 47 and 50 for detecting the corrugated cardboard sheet S to be fed are disposed on the upstream side of the corrugated cardboard sheet transporting direction of the cardboard sheet 9, respectively. Then, like the printing unit described above, every time the corrugated board sheet S passes through the detectors 47, 50, the corrugated board sheet S detected by the sheet detectors 47, 50 is detected.
Of the passage information is transmitted to the respective first and second slotter drive control devices 46 and 49, and the production control information is received in advance from the main control device 2, and the respective first and second slotter drive control devices 46 are received. , 49 is the first of each
And the second slotter drive devices 45, 48 are driven to control the rotation of the first and second slotters 37, 39.

Next, the die cylinder 52 of the die cutting unit 51 is rotationally driven by the variable speed die cutting unit driving device 55 according to a command from the die cutting unit drive control device 56 that rotationally drives the die cylinder 52.
A die-cut unit sheet detector 57 that detects the fed corrugated sheet S is disposed on the upstream side of the die-cut unit 51 in the corrugated-cardboard-conveying direction. And
Similar to the printing unit and the slotter unit described above, every time the corrugated board sheet S passes through the detector 57, the corrugated board sheet S detected by the sheet detector 57 is detected.
Of the passage information is transmitted to the die-cut unit drive control device 56, and the die-cut unit drive control device 56 drives the die-cut drive device 55 to rotate the die cylinder 52 by receiving information on production from the main control device 2 in advance. Control.

Next, the relationship between the main controller and each drive controller will be described. As shown in FIG. 2, the main controller 2 gives the main driving device 8 a desired sheet conveying speed command most suitable for producing the main driving device 8 to drive the main driving device 8, and at the same time, the corrugated board sheet box making machine 1 Paper feeding unit 3, creaser unit 31, first and second printing units 9, 2
The press rolls 15 and 26 of 0, the lower first and second slotters 42 and 44 of the slotter unit 36, and the anvil cylinder 54 of the die cutter unit 51 are rotated in synchronization with the corrugated sheet feeding speed. Further, it receives a paper feed signal of the corrugated paperboard sheet S fed from the paper feed detector 7 provided in the paper feed unit 3. Then, the main controller 2 of the corrugated board sheet box making machine 1 and the first and second printing unit drive controllers 18, 29 of the first and second printing units 9, 20;
The first and second slotter drive controllers 46 and 49 of the slotter unit 36 and the die-cut unit drive controller 56 of the die-cut unit 51 are the main controller 2
Drive control devices 18, 29, 46, 49, 56 based on
Are configured to be able to send and receive each other. Then, the main control unit 2 sends a command to the main drive unit 8 and the paper feed detector 7 described above.
Paper feed detection signal from each drive control device 18, 29, 4
The production order information and commands are transmitted to 6, 49, 56, and each drive control device 18, 29, 46, 49, 56
Or the sheet detection signals from the sheet detectors 19, 30, 47, 50, 57 provided in the respective units 9, 20, 36, 51 and fed to the respective units 9, 20, 36, 51, or Various detection signals of each processing member (for example, the rotational position of the printing cylinder) are transmitted to the main controller. Then, the main controller 2 is the drive controller 1
Various information, detection signals, etc. transmitted from 8, 29, 46, 49, 56 are separately provided to the respective drive control devices 18, 29, 4
6, 49, 56, and each unit 9, 20, 36,
Contribute to production at 51.

Next, each drive control device 18, 29, 46,
Each control in 49 and 56 will be described.
The basic control of each drive control device 18, 29, 46, 49, 56 is the same, and the following description will be made with reference to FIG. 3 for the first printing unit drive control device 18 of the first printing unit 9.
The control relationship with and will be described. In FIG. 3, the first printing unit drive control device 18 receives various commands such as the production data 58 and the speed signal 59 and information such as the other unit status signal 60 from the main control device 2 as described above. The production data 58, the speed signal 59, etc. are given as initial information at the start of production, and are not always transmitted unless the situation changes. Further, a paper feed signal 6 from a paper feed detector 7 provided in the paper feed unit 3
1 is also transmitted as appropriate. And these commands and information
The input unit 66 receives and transmits to the arithmetic unit 63, and the arithmetic unit 6
In step 3, the information stored in the storage unit 65 is called up as required, and the counter 64 is activated to perform counting or the like. Then, based on the calculation result obtained therefrom, the calculated value is output from the output unit 67 to the first printing unit driving device 17
And the first printing unit 17 is activated to rotate the printing cylinder 10. Further, when the first printing unit driving device 17 rotationally drives the printing cylinder 10, the rotational driving information is transmitted to the input unit of the first printing unit drive control device 18, is subjected to arithmetic processing in the arithmetic unit 63, and then is output to the output unit. It is transmitted to the main controller 2 as the first printing unit control information signal 62 via 67.

To explain these controls, for example, one specific case will be explained. The main control unit 2 sends production data 58 associated with the production, a speed signal 59 of the main drive unit 8 and the like as initial information. After that, when the production is started and the paper feed signal 61 from the paper feed detector 7 provided in the paper feed unit 3 is transmitted to the first printing unit drive control device 18, the paper feed unit 3 surely feeds paper. Confirm that it was broken. Subsequently, when the corrugated board sheet S fed by the paper feeding unit 3 reaches the first printing unit 9, the sheet detector 19 provided at the most upstream part of the first printing unit 9 feeds the corrugated cardboard sheet S. It is detected and the detection signal is transmitted to the first printing unit drive control device 18. In the first printing unit drive control device 18, in order to control the rotation speed of the printing cylinder 10 in accordance with the feeding timing of the fed corrugated board sheet S, the time of the fed corrugated board sheet S is stored in the storage unit 65. The counter 64 counts the time required for calling and feeding. The arithmetic unit 63 performs arithmetic processing on them to start the first printing unit driving device 17,
The printing cylinder 10 is rotated in accordance with the feeding timing of the fed corrugated cardboard sheet S. In this way, the first printing unit drive controller 1 is controlled by various information and detection signals.
8 performs arithmetic processing, controls the rotation drive of the first printing unit drive device 17 in accordance with the fed corrugated board sheet S, and rotates the printing cylinder 10 to perform printing. Also,
The rotation speed control information of the printing cylinder 10, the sheet detection signal from the sheet detector 19, and the like are processed by the first printing unit drive control device 18 as processing information in the first printing unit 9 and the corrugated sheet S feeding signal 62. It may be transmitted to the other drive control devices 29, 46, 56 via the main control device 2 and used for production in the other drive control devices 29, 46, 56.

First printing cylinder drive controller 1 described above
The control of the printing cylinder 10 by 8 will be described by expanding the rotation of the printing cylinder 10. As shown in FIG. 4, the rotation speed control of the printing cylinder 10 is preferably controlled in three rotation speeds. First, the area La where the printing plate 11 wound around the printing cylinder 10 contacts the corrugated cardboard sheet S with respect to the circumferential length L of the printing cylinder 10 and performs printing is the same as the transport speed of the corrugated cardboard sheet S that is transported. The print cylinder must rotate at. That is, in this area La, the rotation of the printing cylinder 10 is the synchronous rotation speed with the conveyed corrugated cardboard sheet S, and the above-described first printing unit drive control device 18 calculates and the control to be the synchronous rotation speed A1 is performed. . Subsequently, the region Lb immediately before the printing plate 11 wound around the printing cylinder 10 comes into contact with the corrugated paperboard sheet S is the timing until the conveyed corrugated paperboard sheet S comes into contact with the printing plate wound around the printing cylinder 10. It becomes the area which adjusts and rotates. That is, this area Lb
Is an area where the above-described first printing unit drive control device 18 calculates the time until the corrugated board sheet S arrives and adjusts the timing with the corrugated cardboard sheet S being conveyed. The unit drive device 17 is activated to become the first variable speed rotation A2 for controlling the rotation speed of the print cylinder 10, and the actual rotation speed of the print cylinder 10 is acceleration or deceleration or acceleration including temporary stop with respect to the synchronous rotation speed A1. Or the rotation speed is reduced. Immediately after the printing plate 11 wound around the printing cylinder 10 comes into contact with the corrugated paperboard sheet S to complete printing,
The region Lc up to the first variable speed rotation A2 described above is the second variable speed rotation A3 until the rotation speed control of the first variable speed rotation A2 is performed. That is, in the region Lc, the above-described first printing unit drive control device 18 calculates the time until the first variable speed rotation A2 is started, and the first variable speed rotation A2 is calculated.
In the area for adjusting the timing until the start of the printing, the second variable speed rotation A3 is performed to control the rotation speed of the printing cylinder 10 so that the timing is reached, and the actual rotation speed of the printing cylinder 10 is the first variable speed rotation A2. In contrast, the rotational speed is accelerated or decelerated including temporary stop or accelerated or decelerated.

In the above description, the printing cylinder 10 is used.
Although the example in which the rotation speed control is divided into three rotations has been described, this rotation speed control is not always an essential requirement, and a preferable rotation speed control means in general operation is described. As disclosed, these rotational speed controls may be, for example, two rotational speed controls consisting of one corrugated board sheet feed rate, synchronous rotation and one variable speed rotation, or one corrugated board sheet feed rate. Four rotation speed control including synchronous rotation and three variable speed rotations may be used. In any case, the rotation speed control is composed of at least one corrugated board sheet feeding speed and synchronous rotation speed, and one or more variable speed rotations. As the variable speed rotation increases, the rotation speed control is performed. Becomes complicated, but fine-tuned rotation speed control is performed, and the reliability of accuracy in the rotation speed control becomes high. It goes without saying that in the corrugated board box making machine according to the present invention, any of the above-mentioned rotational speed controls is within the scope of the present invention.

The printing unit 21 of the second printing unit 20 is also the printing cylinder 1 of the first printing unit 9 described above.
The same control as 0 is performed by the second printing unit drive control device 29, and the printing unit 21 of the second printing unit 20 controls the rotational speed according to the corrugated cardboard sheet S (B1, B2, B3 in FIG. 4). To be done.

In the printing units 9 and 20,
The ink transfer roll 1 is used to prevent the occurrence of print density and marginal zones due to the variable speed of the print cylinders 10 and 21.
2, 23 and the positions where the squeeze rolls 13 and 24 are arranged are
The printing cylinders 10 and 21 in the present invention are preferably provided in the area La where the corrugated board sheet feeding speed and the synchronous rotation speed are, or immediately before or in the vicinity thereof.

FIG. 5 illustrates a situation in which the rotational speed control of the printing cylinder 10 described above is developed on a corrugated cardboard sheet. Note that there is no sheet interval between the corrugated cardboard sheets fed in FIG. 5, and this is a continuous sheet feeding and conveying method. Now, when printing the area L1 at the position L2 from the head of the corrugated board sheet Sn with the sheet length Lx in FIG. 5, the area L1 becomes the feeding speed of the corrugated board sheet S and the synchronous rotation speed A1. When performing the order production, the production conditions such as the sheet length Lx of the corrugated board sheet S, the printing position, and the corrugated board sheet feeding speed, which are produced from the main control device 2, have been transmitted to the first printing unit drive control device 18 in advance. From the above, the first printing unit drive control device 18 drives the first printing unit in synchronization with the timing when the fed corrugated sheet S reaches the contact position of the printing plate 11 wound around the printing cylinder 10 of the first printing unit 9. The rotation speed of the first variable speed rotation A2 and the rotation speed of the second variable speed rotation A3 are calculated so as to activate the device 17 and control the rotation speed of the printing cylinder 10. Then, the corrugated paperboard sheet S fed by the paper feeding unit 3 at this time is detected by the paper feeding detector 7 and transmitted as paper feeding information to the first printing unit drive controller 18 via the main controller 2. When the corrugated paperboard sheet S reaches the first printing unit 9, it is detected by the first printing unit sheet detector 19, and the detection signal is transmitted to the first printing unit drive control device 18. The arrival time from the first printing unit sheet detector 19 to the printing cylinder 10 is calculated from the detection signal detected by the first printing unit sheet detector 19, and the rotation speed of the above-mentioned first variable speed rotation A2 and The rotation speed of the second variable speed rotation A3 is calculated.

Further, the distance between the contact position between the corrugated paperboard sheet S and the printing plate 11 in the first printing unit 9 and the detection position in the first printing unit sheet detector 19 is known in advance in the mechanical design, and Since the production order is also known, the first printing unit drive controller 18 can grasp the timing after passing the detector 19 with respect to the corrugated board sheet production speed in the production order. Therefore, when there is a deviation between the detection timing that is known in advance and the detection signal from the detector 19, it is determined that the corrugated board sheet S to be fed has a conveyance deviation from the regular feeding timing. it can. In general, such a conveyance deviation is often delayed from the regular feeding timing, but the feed rolls 6a and 6b rotate faster due to the wear of the feed rolls 6a and 6b and the like, and the corrugated board is fed from the regular feeding timing. The sheet S may be fed early. Then, in such a case, the first printing unit drive control device 18 calculates the feeding timing of the corrugated board sheet S and controls the rotational speed of the first variable speed rotation A2 and the second variable speed rotation A3 to The first printing unit driving device 17 is synchronized with the timing when the sheet S is fed and the corrugated paperboard sheet S reaches the printing plate contact position.
Is started to control the rotation speed of the printing cylinder 10, and the rotation of the printing cylinder is controlled to the corrugated board sheet feeding speed and the synchronous rotation speed A1.

Therefore, in order to control the rotational speed of 11 parts of the printing plate wound around the printing cylinder 10 so that the printing speed of the printing plate L 1 part becomes the cardboard sheet feeding speed and the synchronous rotation speed A 1 in the printing area L 1.
Immediately before the synchronous rotation speed region A1 is the first variable speed rotation A2, and immediately before that is the second variable speed rotation A3. When the printing of the first corrugated cardboard sheet Sn is completed, the rotation speed control of the printing cylinder 10 is performed so that the printing plate 11 comes into contact with the region L1 of the second corrugated cardboard Sn + 1 that is subsequently conveyed to be printed. I do. At this time, the feeding speed of the corrugated board sheet S and the second corrugated board Sn + 1
To the area L1 to be printed is the rear end portion L2 of the first cardboard sheet Sn and the second cardboard Sn + 1.
Of the first corrugated sheet Sn which is unavoidably generated due to the mechanical convenience of the sheet feeding device 5 and the front end portion L2 of
And the interval of the second cardboard Sn + 1. The amount obtained by adding the rear end portion L2 of the corrugated board sheet Sn and the front end portion L2 of the second corrugated board Sn + 1 is already known from the production order by the data previously transmitted from the main controller 2. Also, the first cardboard sheet Sn
And the interval of the second cardboard Sn + 1 is added,
The interval can be detected from the detection signal detected by the first printing unit sheet detector 19, and the various information is instantaneously calculated by the first printing unit drive control device 18 and the second corrugated board is detected. Printing area L1 of sheet Sn + 1
The first variable speed rotation A2 and the second
The rotation speed of the variable speed rotation A3 is determined, the first printing unit driving device is activated, and the rotation speed of the printing unit 10 is controlled. In this way, the third corrugated cardboard sheet Sn +
The second and subsequent prints are similarly controlled and printing is performed. The second printing unit 20 also prints the corrugated cardboard sheet S fed under the same control as described above.

Then, the production information controlled by the printing unit 9 is sent to the main control device 2, and the main control device 2 drives the drive control devices 29, 46, 4 of the other units 20, 36, 51.
It may be transmitted to 9, 56 and contribute to each processing control.

The printing cylinder 1 of the printing unit 9, 20
First slotter 3 of slotter unit 36 other than 0 and 21
7 and the second slotter 39 and the die cylinder 52 of the die cut unit 51 are also controlled in rotational speed, respectively, similarly to the printing cylinders 10 and 21 described above. For example, on behalf of the first slotter 37 of the slotter unit 36, the first slotter drive controller 46 controls the first slotter 37 by the first
The rotation of the slotter 37 will be described. The rotation speed control of the first slotter 37 is mainly divided into three rotations as shown in FIG. First, in the area La where the slotter knife 38 attached to the first slotter 37 abuts the corrugated board sheet S to perform the grooving processing, the first slot 37 is at the same speed as the feeding speed of the corrugated board sheet S being fed. I have to rotate. That is, in this area La, the rotation of the first slotter 37 is the synchronous rotation speed with the corrugated cardboard sheet S being fed, and the above-described first slotter drive control device 46 calculates and the corrugated cardboard sheet feeding speed and the synchronous rotation speed. Control to be C1 is performed. Then, the slotter knife attached to the first slotter 37 is attached to the corrugated cardboard sheet S.
The area Lb until just before contacting the sheet is an area where the corrugated cardboard sheet S is rotated by adjusting the timing until it comes into contact with the slotter knife 38 attached to the first slotter 37. That is, the area Lb is an area in which the above-described first slotter drive control device 45 calculates the time until the corrugated board sheet S arrives and adjusts the timing with the corrugated board sheet S to be fed. The first slotter drive device 45 is activated so that
First variable speed rotation C2 for controlling the rotation speed of the slotter 37
Therefore, the actual rotation speed of the first slotter 37 is an accelerated or decelerated rotation speed including a pause with respect to the corrugated board sheet feeding speed and the synchronous rotation speed C1. Then, immediately after the slotter knife 38 attached to the first slotter 37 comes into contact with the corrugated board sheet S to complete the grooving process, the region Lc from the above-mentioned first variable speed rotation C2 to the first variable speed rotation C2 is This is the second variable speed rotation C3 until the rotation speed control is performed. That is, in the region Lc, the first slotter drive control device 46 described above calculates the time until the first variable speed rotation C2 is started, and the first variable speed rotation C2 is calculated.
The second variable speed rotation C3 that controls the rotation speed of the first slotter 37 so that the timing is adjusted in the region for adjusting the timing until the start of the rotation, and the actual rotation speed of the first slotter 37 is the first variable speed. Acceleration or deceleration including temporary stop with respect to the rotation C1 or accelerated or decelerated rotation speed.

In this way, the rotational speed of the first slotter 37 is controlled, and the corrugated board sheet S to be fed is subjected to grooving. When performing the rotational speed control, the first rotational speed control of the printing cylinder 10 described above is performed.
Similar to the operation of the printing unit drive control device 18, the detection information from the first slotter sheet detector 47 that detects the corrugated cardboard sheet S fed based on various production data from the main control device 2 is used to drive the first slotter sheet. The controller 46 performs arithmetic processing to control the rotation of the first slotter 37. In addition, each unit 9, 20, 51 transmitted via the main controller 2
Grooving may be performed on the corrugated cardboard sheet S that is fed by calculating the production information and the like. Then, the same control as described above is performed in the second slotter 39 and the die cylinder 52.

The control in which each processing cylinder synchronizes from the processing start position to the processing completion position of the corrugated board sheet is not necessarily limited to the position where the processing member is present, and the synchronous operation is always performed at the maximum synchronous rotation speed position. You may also do. More specifically, for example, if the adjustment area is 180 degrees of the rotation angle of the processing cylinder, the synchronization area is always 180 degrees. Therefore, if the processing member such as a printing plate or a slotter knife is located at 120 degrees. For example, the 60-degree region where no processed member exists may be controlled to be the synchronization region.

Next, in the entire corrugated board sheet box making machine 1, the action of each processing unit on the fed corrugated board sheet S is developed on the corrugated board sheet S as a whole, and FIG. 7 is used. explain. In the corrugated cardboard sheet S fed from the paper feeding unit 3, the first corrugated cardboard sheet Sn has already been processed by the printing units 9 and 20 and the first slotter 37 and the second slotter 39. The corrugated cardboard sheet Sn + 1 of the first sheet is in a state in which the processing in the printing units 9 and 20 and the first slotter 37 is completed, and then the groove cutting processing is performed in the second slotter 39. The fourth corrugated cardboard sheet Sn + 3 is the first corrugated sheet Sn + 3 in the state where the printing process in the printing units 9 and 20 is completed and the grooving process is then performed in the first slotter 37. In the state where the printing process of the printing unit 9 is completed and then the printing process of the second printing unit 20 is performed, the fifth corrugated cardboard sheet Sn + 4 is in the state of the printing process of the first printing unit 9. In the first printing unit 9, the corrugated board sheet Sn that is conveyed next immediately after the printing process on the front corrugated board sheet Sn + 3 is completed.
In order to print on +4, based on the production data from the main control device 2 that has already been transmitted, the detection signal of the corrugated board sheet Sn + 4 detected by the first printing unit sheet detector 19 and the like are driven by the first printing unit. The control device 18 takes in and the first printing unit drive control device 18 activates the first printing unit drive device 17 in accordance with the feeding timing of the corrugated cardboard sheet Sn + 4 to be fed, and drives the printing cylinder 10 to the second variable speed. Rotation A3 and first variable speed rotation A2
When the position of the corrugated board sheet Sn + 4 to be printed reaches the contact position of the printing plate 11 wound around the printing cylinder 10, the rotation of the printing cylinder 10 is controlled to the corrugated board sheet feeding speed and the synchronous rotation speed A1. Controlled corrugated sheet S
Print processing is performed on n + 4.

Similarly, in the second printing unit 20, the printing process is performed in the first printing unit 9 immediately after the printing process on the front corrugated cardboard sheet Sn + 2 is completed, and the printing is performed on the corrugated cardboard sheet Sn + 3 to be conveyed next. Therefore, based on the production data from the main control device 2 that has already been transmitted, the second printing unit drive control device 29 takes in the detection signal of the corrugated board sheet Sn + 3 detected by the second printing unit sheet detector 30, and the like. The second printing unit drive control device 29 activates the second printing unit drive device 28 in synchronization with the feeding timing of the corrugated board sheet Sn + 3 to be fed, and the printing cylinder 21 is moved to the second variable speed rotation B3 and the first.
The printing plate 22 in which the portion to be printed on the corrugated board sheet Sn + 3 is wound around the printing cylinder 21 by controlling the variable speed rotation B2.
When the contact position is reached, the rotation of the printing cylinder 21 is controlled to the corrugated board sheet feeding speed and the agreed rotational speed B1 to perform the printing process on the corrugated board sheet Sn + 3.

Then, in the first slotter 37 of the slot unit 36, the printing process is performed by the second printing unit 20 immediately after the grooving process on the front corrugated board sheet Sn + 1 is completed and the creaser unit, and then the corrugated cardboard to be conveyed next. Corrugated cardboard sheet Sn + 2 detected by the slotter sheet detector 47 on the basis of the production data from the main controller 2 that has already been transmitted to print on the sheet Sn + 2.
Is detected by the first slotter drive control device 46, the first slotter drive control device 46 activates the first slotter drive device 45 in synchronization with the feeding timing of the corrugated board sheet Sn + 2 to be fed, and The 1 slotter 37 is controlled to the second variable speed rotation C3 and the first variable speed rotation C2, and the slotter knife 38 attached to the 1st slotter 37 at the location where the corrugated board sheet Sn + 2 is to be grooved.
When the contact position is reached, the rotation of the first slotter 37 is controlled to the corrugated board sheet feeding speed and the synchronous rotation speed C1 to perform the grooving processing on the corrugated board sheet Sn + 2.

In the second slotter 39, the first slotter 37 performs the grooving immediately after the grooving of the front corrugated board sheet Sn is completed, and then the corrugated board sheet S to be conveyed next.
Based on the production data from the main controller 2 that has already been transmitted in order to perform grooving for n + 1, the production information in the first slotter 37 and the second slotter sheet detector 5
The corrugated cardboard sheet S to which the second slotter drive control device 49 is fed by the detection signal of the corrugated board sheet Sn + 1 detected at 0 and the like, and is fed by the second slotter drive control device 49.
The second slotter driving device 48 is started in synchronization with the feeding timing of n + 1, and the second slotter 39 is rotated at the second variable speed rotation D.
When the location of the corrugated board sheet Sn + 1 to be grooved reaches the contact position of the slotter knife 40 attached to the second slotter 39, the rotation of the second slotter 39 is controlled by 3 and the first variable speed rotation D2. Control the corrugated board sheet feeding speed and the synchronous rotation speed D1 to control the corrugated board sheet Sn +
Grooving is performed on 1.

The slotter knife is not replaced for each production order, but one slotter knife is generally used in common. Therefore,
The arc length of the slotter knife is relatively long, and depending on the production order, it is almost longer than the groove cutting length on the corrugated board sheet, and the excess slotter knife protruding from the corrugated board sheet will be applied to the adjacent corrugated board sheet. . However, the portion of the adjacent corrugated cardboard sheets is also a place where grooving is performed by another slotter, and even if the slotter knife hangs on the adjacent corrugated cardboard sheets, it does not affect the processing of the corrugated cardboard sheets. Specifically, with reference to FIG. 7, the slotter knife 3 of the first slotter 37.
When the upstream front end portion of the fed corrugated cardboard sheet Sn + 2 is subjected to grooving processing, the excess slotter knife 38 protruding from the grooving position is applied to the trailing end portion of the preceding corrugated cardboard sheet Sn + 1, and Cut off. However, the preceding corrugated board sheet Sn + 1
Since the rear end portion is grooved by the slotter knife 40 of the second slotter 39, there is no effect on the processing of the corrugated board sheet. On the contrary, the slotter knife 4 of the second slotter 39
When the corrugated cardboard sheet Sn + 1 preceding by 0 is grooved, the slotter knife 40 of the second slotter 39 grinds the downstream rear end portion of the corrugated cardboard sheet Sn + 1 to be fed, so that it protrudes from the groove cutting position. The surplus slotter knife 40 is applied to the front end portion of the succeeding corrugated board sheet Sn + 2, but this portion has already been processed by the slotter knife 38 of the first slotter 37, and there is no place to interfere with the processing of the corrugated board sheet. There is no effect.

Although the rotational speed control of the die cylinder 52 in the die cutting unit 51 is not disclosed in FIG. 7, the same control as the rotational speed control of the printing cylinder of the printing unit or the slotter of the slotter unit described above is performed.

Next, the advantages of improving productivity and reducing mechanical load in the corrugated board sheet box making machine of the present invention will be described. For example, if it is assumed that both the conventional corrugated board box making machine and the corrugated board sheet making machine of the present invention are operating at the same operation (rotation) speed, as shown in FIG. 8 and FIG.
In the conventional corrugated board box making machine, as shown in FIG. 11, the processing cylinders such as a printing cylinder and a slotter are at a synchronous rotation speed with the corrugated board sheet feeding speed with respect to the circumference L of the processing cylinder. However, the corrugated board sheet S must be fed in accordance with the rotation, and only one corrugated board sheet can be produced for one circumference length L of the processing cylinder regardless of the sheet length to be produced. Therefore, when the sheet length is 1/2 the corrugated cardboard sheet length Lz with respect to the processing cylinder circumference length L, a quarter L4 of the processing cylinder circumference length L is opened between the front and rear corrugated board sheets. . On the other hand, in the corrugated board sheet box making machine 1 of the present invention, since the processing cylinder rotates at a variable speed, it does not feed the paper in accordance with the rotation of the processing cylinder. Since the corrugated board sheets can be continuously fed without opening a gap between the corrugated board sheets, the corrugated board sheet S can be fed regardless of the length L of the circumference of the processing cylinder. Specifically, as shown in FIG. 8, when the sheet length Lz is ½ of the circumference L of the processing cylinder, or when the sheet length Lw is ⅓ of the circumference L of the processing cylinder. However, unlike the conventional corrugated board box making machine, there is no need to feed the corrugated board with a space between them.

Conversely, if it is assumed that the conventional corrugated board box making machine is producing at a production rate of 100 sheets per minute, for example, the production of the corrugated sheet length shown in FIG. With the corrugated cardboard sheet box making machine of the above, if it is fed and conveyed at the same production speed, the conventional corrugated board sheet box making machine produces only one corrugated sheet sheet per processing cylinder circumference regardless of the produced corrugated sheet board length. Not possible, but half of the machining cylinder length shown in Figure 8a
In the corrugated board box making machine of the present invention for producing a corrugated board sheet length of, it is not necessary to open a space between the corrugated board sheets as compared with the conventional corrugated board box making machine, and the paper is continuously fed and conveyed. Since the processing cylinder rotates the corrugated cardboard sheet S fed at a variable speed, the cardboard sheet S fed in accordance with the processing target position of the corrugated cardboard sheet S has the same rotation speed as the feeding speed. With the corrugated board box making machine of the present invention, the same corrugated board sheet feeding speed can be used to perform a production equivalent to 200 sheets per minute, which is twice as much as the conventional corrugated board sheet making machine. Similarly, in the case of the corrugated board box making machine of the present invention shown in FIG. 8b, the corrugated board sheet box making machine of the present invention for producing a corrugated board sheet length of 1/3 of the processing cylinder length shown in FIG. It is possible to perform production equivalent to 300 sheets per minute, which is three times as much as that of the conventional corrugated board box making machine.

As described above, the cardboard sheet box making machine according to the present invention has an advantage that the productivity can be improved while the feeding speed is the same as that of the conventional cardboard sheet box making machine.

To explain the above matters from the viewpoint of reducing the mechanical load, the conventional corrugated board box making machine and the corrugated board box making machine of the present invention are manufactured by the corrugated board sheet of the present invention so as to have the same production amount. If the sheet feeding speed of the box machine is lowered, for example, in the case of the corrugated cardboard sheet length shown in FIG. 8a, the sheet feeding speed can be reduced to half, and FIG.
In the case of the corrugated cardboard sheet length shown in, the sheet feeding speed is 3
It can be reduced to one-third. In this way, even when performing the same production as a conventional corrugated board box making machine, it is possible to reduce the sheet feeding speed, which reduces the mechanical load and also reduces mechanical vibration and noise. It has an advantage that it leads to the improvement of the machine use environment and the machine surrounding environment.

Further, in the corrugated board box making machine of the present invention, it is possible to carry out the production by the intermittent sheet feeding by the same paper feeding and conveying method as the conventional corrugated board sheet making machine or by the sheet feeding system similar to the intermittent sheet feeding. Is. For example, in the production method shown in FIG. 9, a space L3 can be arbitrarily formed between the corrugated board sheets regardless of the corrugated board sheet length Lw. At this time, the interval L3 may be set according to the length Lw of the corrugated cardboard sheet, and the corrugated cardboard box box making machine 1 may produce the corrugated cardboard sheet with the most preferable interval in view of conditions such as mechanical load and production efficiency. The rotation speed of the processing cylinder described above may be controlled according to the corrugated cardboard sheet length Lw, or the processing cylinder may be rotated at a synchronous speed with the corrugated paperboard sheet feeding speed by using an existing intermittent sheet feeding type device. If the operator prefers to operate, as in the case of a conventional corrugated board sheet box making machine, an operation method of processing one corrugated board sheet for one circumference of the processing cylinder can be performed. Further, in the corrugated board box making machine of the present invention, generally, the shorter the sheet length is, the more load is applied to the variable speed control of the processing cylinder. Therefore, in order to reduce the mechanical load, the It is also possible to open a gap between the sheets to the area where the mechanical load is reduced and feed and convey the corrugated cardboard sheet, and perform variable speed control of the processing cylinder according to the fed corrugated cardboard sheet. On the contrary, even if the length of the sheet to be fed is longer than that of the processing cylinder, the rotation of the processing cylinder may be controlled according to the feeding state of the corrugated cardboard sheet S to be fed. Specifically, before reaching the processing cylinder, the rotation speed of the processing cylinder is adjusted so that it becomes slower than the feeding speed of the sheet length to be fed, and the corrugated cardboard sheet fed by the processing members of the processing cylinder is adjusted. Only when processing is performed, control is performed so that the rotation speed of the processing cylinder matches the speed of the corrugated cardboard sheet being fed. Depending on the length of the corrugated board sheets, the corrugated board sheets may be intentionally provided with a gap between them, or may be continuously fed without providing a gap between the corrugated board sheets.

Furthermore, the applicant of the present application filed Japanese Patent Application No.
No. 0-232147, in the corrugated board sheet box making machine 1, a separate application is filed for a production method in which the corrugated board sheet feeding is intentionally stopped temporarily for the sake of production, and the feeding is restarted immediately. However, according to the present invention also in such a sheet feeding method, the drive control device that controls the rotation and drive of each processed body detects the feeding signal of the corrugated cardboard sheet fed from the sheet feeding unit and each processing. Rotation speed control of the processed body by detecting various information and signals relating to sheet conveyance from a sheet detector arranged immediately in front of the body or a drive control device for rotationally controlling the processed body immediately before the processed body Therefore, the processed body does not rotate unnecessarily. For example, in the printing cylinder in the printing unit, when the printing cylinder makes one rotation, the printing plate wound around the printing cylinder always contacts the ink transfer roll to transfer the ink to the printing plate. In the production method as described above, there is a region where the paper is not temporarily fed, and the printing cylinder also rotates at this time, so the ink transferred to the printing plate in the first rotation is printed on the corrugated cardboard sheet. Further ink is transferred onto the printing plate in the second rotation without performing. Then, when the cardboard sheet is fed, ink is discharged onto the cardboard sheet.
The excess ink that has been transferred batchwise is printed on the corrugated cardboard sheet, and the corrugated cardboard sheet that has been printed has a darker print shade than other printed corrugated cardboard sheets, which may result in poor quality. is there. However, according to the present invention, if the sheet detector provided immediately before the printing cylinder or the sheet feeding detector provided in the sheet feeding unit or the printing unit is the second printing unit, the first printing unit is Since the rotation of the printing cylinder is controlled by a signal or information from the drive control device or the like, the printing cylinder does not rotate excessively, so that no printing failure occurs. Therefore, even in the case of the production method disclosed in Japanese Patent Application No. 10-232147 filed by the applicant, the rotation of the printing cylinder can be controlled in accordance with the feeding of the corrugated board sheet or the conveyance of the corrugated board sheet. ,
It has an advantage that good printing processing can be performed on a corrugated cardboard sheet that is always fed.

In addition to the corrugated board sheet feeding method described above, a corrugated board sheet box making machine may occasionally make a paper feeding error, and the same result as described above may occur at this time. According to the present invention, even if a paper feed error occurs in the paper feed unit, the printing cylinder does not perform extra rotation unless the corrugated board sheet is fed, and it is not necessary to treat the paper feed error as a trouble. .

Further, in the above description, the corrugated cardboard sheet S to be fed is detected by the sheet detector of each unit, and the drive controller of each unit receives the detection signal and activates each drive unit to perform each processing. Although the embodiment for controlling the rotation of the cylinder has been described, the corrugated board sheet box making machine of the present invention is not restricted by the embodiment according to the above-mentioned control, and for example, a paper feed detector provided in the paper feed unit 3 The processing cylinders 10, 21, 37, 39, 52 may be controlled in rotation speed in response to the sheet detection signal from 7. Specifically, the first printing unit 9 receives a paper feed signal from the paper feed detector 7 provided in the paper feed unit 3 by the first print unit drive controller 18 via the main controller 2, The cardboard sheet S is a printing cylinder 1
The rotation of the printing cylinder 10 is controlled so as to rotate at the synchronous speed with the cardboard sheet feeding speed at the position where the printing cylinder 11 comes into contact with the printing plate 11 wound around 0. That is, the distance from the paper feed detector 7 provided in the paper feed unit 3 to the processing position of the first printing unit 9 is a preset distance, and the drive control device 18 sets the corrugated sheet S to be fed. The feeding timing of the cardboard sheet S to which the printing plate 11 having the cardboard sheet S wound around the printing cylinder 10 is fed is calculated from the feeding speed, and the printing cylinder 10 is rotated at the position where the cardboard sheet S is in contact. Is controlled so as to rotate at the cardboard sheet feeding speed and the synchronous speed. Then, the first slotter 37, the second slotter 39, and the die cylinder 53 of the second printing unit 20 and below calculate the feeding timing of the corrugated board sheet S to be fed in the same manner, and at the position where the corrugated board sheet S abuts. The rotation of the printing cylinder is controlled so as to be synchronized with the cardboard sheet feeding speed.

As yet another control, the drive control devices 18, 29, 46, 49, 56 of the respective units communicate with each other by the respective machining cylinders 10, 21, 37, 39, 52.
The rotation speed control may be used. Specifically, as described above, in controlling the rotational speed of the printing cylinder 10 of the first printing unit 9, the paper feed signal from the paper feed detector 7 provided in the paper feed unit 3 is transmitted via the main controller 2. Is received by the first printing unit drive control device 18, and the rotation of the printing cylinder 10 rotates at the cardboard sheet feeding speed and the synchronous speed at a position where the corrugated paperboard sheet S comes into contact with the printing plate 11 wound around the printing cylinder 10. Control so that. Then, the second printing unit 20 is controlled by the first printing unit drive control device 18 so that when the corrugated board sheet S reaches the printing cylinder 10 of the first printing unit 9, the corrugated board sheet feeding speed and the synchronous rotation speed are set. The information thus obtained is transmitted to the second printing unit drive control device 29 via the main control device 2 as a corrugated board sheet detection signal in the first printing unit. In the second printing unit drive control device 29 which receives the corrugated board sheet detection signal, the printing cylinder of the second printing unit 20 is located at a position where the corrugated board sheet S abuts the printing plate 22 wound around the second printing cylinder 21. The rotation of 21 is controlled to be the same as the corrugated board sheet feeding speed.
Similarly, the first slotter 37 receives the corrugated board sheet detection signal from the drive controller 29 of the second printing unit 20,
The second slotter 39 is the drive control device 4 of the first slotter 37.
In response to the corrugated board sheet detection signal from 6, the die cylinder 52 of the die cutting unit 51 causes the second slotter 39 to move.
For example, receiving the corrugated board sheet detection signal from the drive control device 49, it receives the production information of each processing cylinder arranged on the upstream side and controls the rotation of each processing cylinder. As described above, the corrugated board sheet can be processed in the present invention by controlling each processing cylinder by communication between each unit.

Also in the above-mentioned various controls, the communication between the main control unit 2 and the respective control units 18, 29, 46, 49 and the control in the respective control units 18, 29, 46, 49 are as described above. This is the same as the embodiment described with reference to FIGS. Further, since the corrugated paperboard feeding method is the same as the continuous feeding method with no gap between corrugated cardboard sheets and the intermittent paper feeding method with intentionally providing a gap between corrugated cardboard sheets, detailed description will be made. Omit it.

[0056]

According to the corrugated board sheet box making machine of the present invention, it is possible to carry out desired processing at a desired position of the corrugated board sheet regardless of the feeding speed of the fed corrugated board sheet.
Since each processing cylinder attached with each processing member is controlled to rotate at the cardboard sheet feeding speed and the synchronous speed and to rotate at a variable speed, there is no need to feed paper in accordance with the rotation of the processing cylinder, and the cardboard sheet Corrugated board sheets can be continuously fed without a gap between them, or a desired gap can be provided between corrugated board sheets as needed, regardless of the circumference of the processing cylinder. Can feed cardboard sheets. Therefore, the corrugated board box making machine according to the present invention has an advantage that the productivity is improved when the corrugated board sheet feeding speed is the same as that of the conventional corrugated board sheet making machine but the same sheet length is used. As a result, it is possible to realize high production at a lower speed than in the past, and it is not necessary to operate at high speed, which reduces the mechanical load.

Further, in the case of producing the same amount as that of the conventional corrugated board sheet box making machine, the sheet feeding speed can be reduced, so that the mechanical load is reduced and the mechanical vibration and the mechanical noise are reduced. It also has the advantage of reducing the number and improving the environment in which the machine is used and the environment around the machine.

Since the mechanical load can be reduced,
The strength design of the machine can be kept low during the machine design and manufacture, and it has an advantage that it contributes to the reduction of the market selling price accompanying the reduction of the machine manufacturing cost.

Further, since the corrugated board sheet can be produced at a low speed, the corrugated board sheet conveying conditions are improved, and the processing resistance and the sheet conveying resistance at each processing section are reduced, which has the advantage of improving the production quality. . In addition, since it is possible to produce corrugated board sheets at a low speed, it is less likely that jams will occur in the corrugated board box making machine. In addition to contributing to the work, there is an advantage that the work of the operator is reduced.

[Brief description of drawings]

FIG. 1 is a diagram preferably showing each unit control in a corrugated board sheet box making machine of the present invention.

FIG. 2 is a control configuration diagram showing a relationship between a main controller and a controller of each unit.

FIG. 3 is a control configuration diagram showing a configuration of a first printing unit drive control device.

FIG. 4 is a conceptual diagram showing rotation speed control in a printing cylinder of the first printing unit.

FIG. 5 is a development view on the corrugated board sheet when printing is performed on the corrugated board sheet by the printing cylinder of the first printing unit.

FIG. 6 is a conceptual diagram showing rotation control in the first slotter of the slotter unit.

FIG. 7 is a development view on a corrugated board sheet when printing and grooving are performed on the corrugated board sheet by the corrugated board sheet box making machine of the present invention.

FIG. 8 is a paper-passing development view showing a paper-passing method when a corrugated paperboard sheet is passed through the cardboard-sheet box making machine of the present invention.

FIG. 9 is a paper-passing development view showing another paper-passing method when a cardboard-sheet box making machine of the present invention is used.

FIG. 10 is a diagram showing a conventional corrugated board sheet box making machine and a control method for each unit.

FIG. 11 is a paper passing development view showing a paper passing method in a conventional corrugated board sheet box making machine.

[Explanation of symbols]

1 Cardboard Sheet Box Making Machine 2 Main Control Device 3 Paper Feeding Unit 7 Paper Feed Detector 8 Main Driving Device 9 First Printing Unit 10 Printing Cylinder 17 First Printing Unit Driving Device 18 First Printing Unit Driving Control Device 19 First Printing Unit sheet detector 20 Second printing unit 21 Printing cylinder 28 Second printing unit drive device 29 Second printing unit drive control device 30 Second printing unit sheet detector 31 Creaser unit 36 Slotter unit 37 First slotter 39 Second slotter 45 First slotter drive device 46 First slotter drive control device 47 First slotter sheet detector 48 Second slotter drive device 49 Second slotter drive control device 50 Second slotter sheet detector 51 Die-cut unit 52 Die cylinder 55 Die-cut unit drive device 56 Daikaku Unit drive controller 57 die-cut unit sheet detectors A1, B1, C1, D1 rotations A2, B2, C2, D2 of corrugated board sheet feeding speed and synchronous speed first variable speed rotation A3, B3, C3, D3 second Variable speed rotation

Claims (10)

[Claims] 1. A sheet-shaped corrugated cardboard sheet (S) is fed from a sheet feeding section (3) at a desired speed in response to a command from a main controller (2), and the sheet feeding section (3) is fed. The corrugated cardboard sheet (S) that is fed in the downstream process of the process is mounted with the processing members (11,22,38,40,53) and printed by the rotating processed body (10,21,37,39,52). Alternatively, in a cardboard sheet box making machine (1) for performing desired processing such as grooving or punching, the corrugated sheet is provided on the upstream side of the processed body (10, 21, 37, 39, 52), and the paper feeding section (3 ), A means (19,30,47,50,57,7) for detecting the arrival of the corrugated cardboard sheet (S) and the processed body (10,21,37,39,52). Drive means (17, 28, 45, 48, 55) for variable speed rotation drive, and drive control means (18, 29, 46) for controlling variable speed rotary drive of the drive means (17, 28, 45, 48, 55) , 49, 56), and the drive control means (18, 29, 46, 49, 56) is the main controller (2).
From the means (19, 30, 47, 50, 57, 7) that receives the feeding speed of the corrugated cardboard sheet (S) fed from Receiving the corrugated sheet feed arrival information, the processed member (11, 22, 38, 40, 53) attached to the processed body (10, 21, 37, 39, 52) is fed to the corrugated sheet ( Rotation speed control to match the feeding speed of (S), and rotation speed control to stop and variable speed or variable speed with respect to the rotation speed that matches the feeding speed of the corrugated cardboard sheet (S) to be fed, The processed body (10, 21, 37, 39,
When the processed member (11, 22, 38, 40, 53) mounted on 52) abuts, the processed member mounted on the processed body (10, 21, 37, 39, 52) (11, 22, Cardboard sheet box making machine that performs processing by controlling the rotational speed that matches the feeding speed of the corrugated cardboard sheet (S) that is fed (38, 40, 53). 2. The means for detecting the arrival of the fed corrugated cardboard sheet (S) is the processed body (10, 21, 37, 39, 52).
Corrugated board sheet detector (19,30,47,50,57) arranged on the upstream side of the corrugated board sheet feeding line (PL) of
The detection signal by the corrugated cardboard sheet detector (19, 30, 47, 50, 57) is the processed body (10, 21, 37, 39, 39) mounted with the processed member (11, 22, 38, 40, 53). 52) Drive means (1
The cardboard sheet box making machine according to claim 1, which transmits to a drive control means (18, 29, 46, 49, 56) of (7, 28, 45, 48, 55). 3. The means for detecting the arrival of the fed corrugated sheet (S) in the corrugated sheet feeding line (PL) on the downstream side of the sheet feeding means (5) in the sheet feeding section (3). ) A corrugated board sheet detector (7) disposed above, the detection signal from the corrugated board sheet detector (7) is
The processed body (10,21,37,39,52) equipped with (11,22,38,40,53)
2. The corrugated board sheet box making machine according to claim 1, wherein the box is sent to the drive control means (18, 29, 46, 49, 56) of the drive means (17, 28, 45, 48, 55) for rotationally driving the variable speed. 4. The means for detecting the feeding of the fed corrugated cardboard sheet (S) is a paper feeding means in the paper feeding section (3).
A corrugated board sheet detector (7) disposed on the corrugated board sheet feeding line (PL) downstream of (5), wherein the detection signal from the corrugated board sheet detector (7) is the processed member (11). Is transmitted to the drive control means (18) of the drive means (17) for rotatably driving the first processed body (10) mounted with the
Rotation speed control to match the feeding speed of the corrugated cardboard sheet (S) to be fed to the processed body (10) and rotation to match the feeding speed of the fed corrugated cardboard sheet (S) And variable speed or rotation speed control to make variable speed,
When the processing member (11) mounted on the first processed body (10) contacts the corrugated cardboard sheet (S) to be fed, the feeding speed of the corrugated cardboard sheet (S) to be fed is matched. The first drive control means (18) controls the rotation speed to perform processing, and the corrugated cardboard sheet (S) fed to the first processed body (10) is used for the first processed body (10). ) Of the feeding arrival signal when reaching the processing position, the driving means (2) for rotatably driving the next processing body (21) equipped with the processing member (22) at a variable speed.
Rotation speed control for making the next processed body (21) match the feeding speed of the fed corrugated board sheet (S) by transmitting it to the drive control means (29) of 8), and the fed corrugated board sheet. (S) The rotation speed that matches the feeding speed of (S) is stopped and the rotation speed is controlled so that it is variable or variable.
When the processed member (22) attached to 1) comes into contact with the fed corrugated sheet (S), the fed corrugated sheet (S) is fed.
Processing is performed by controlling the rotation speed to match the traveling speed of the workpiece, and the last workpiece (52) is driven to the drive control means (56) of the drive means (55) that rotates at a variable speed. ), Sending a delivery arrival signal of the corrugated cardboard sheet,
The corrugated board sheet box making machine according to claim 1, wherein the corrugated board sheet (S) fed to the final processed body (52) equipped with the processed member (53) is processed. 5. The stop and variable speed or variable speed rotational speed control is controlled so that the variable speed rotational speed control is made up of two or more different rotational speed speeds. Cardboard sheet box making machine. 6. The paper feeding means (5) of the paper feeding section (3) has a preceding corrugated cardboard sheet (Sn) and a succeeding corrugated cardboard sheet (Sn +).
The corrugated board sheet box making machine according to any one of claims 1 to 5, which is continuously fed without a gap between the box and the box. 7. The paper feeding means (5) of the paper feeding section (3) comprises a preceding corrugated cardboard sheet (Sn) and a succeeding corrugated cardboard sheet (Sn +).
The corrugated board sheet box making machine according to claim 1 to claim 5, wherein the corrugated board sheet is intermittently fed at an arbitrary interval from (1). 8. The processed body is a printing cylinder (10, 21) equipped with a printing plate (11, 22) for printing on a corrugated board sheet (S), and is desired for a corrugated board sheet (S) to be fed. The corrugated paperboard box making machine according to any one of claims 1 to 4 and claim 5 and claim 6 or claim 7 for performing printing. 9. The processed body is a slotter (3) having a slotter knife (38, 40) for grooving a corrugated cardboard sheet (S).
7.39), wherein the desired corrugation is performed on the fed corrugated cardboard sheet (S).
And a corrugated board sheet box making machine according to claim 6 or 7. 10. The processed body is a die cylinder (52) equipped with a die (53) for punching a corrugated cardboard sheet (S), and punches a desired corrugated sheet (S) to be fed. The corrugated board sheet box making machine according to any one of claims 1 to 4 and claim 5 and claim 6 or claim 7.