JP2003127251A - Corrugated cardboard sheet carton manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To upgrade the productivity to a higher level by making a single corrugated cardboard sheet carton manufacturing machine deal with a wide range of corrugated cardboard sheet fabricating process. SOLUTION: In the corrugated cardboard sheet carton manufacturing machine, a sheet feed drive device which feeds the sheet by the calculated number of sheets to be fed according to the calculation of the number of the sheets to be fed per single rotation to the peripheral length of a work based on the length of the sheet scheduled for the production of the carton and a sheet feed drive control device are provided. In addition, a fabricating member corresponding to the number of the sheets to be fed per single rotation, is fitted to the work, and the work is driven to rotate with the help of the drive device and further, the sheet feed drive device is driven by the sheet feed drive control device. After that, the corrugated cardboard sheet is fed to the work by the number of the cardboard sheets to be fed per single rotation to the peripheral length of the work. Thus the corrugated cardboard sheet to be fed is fabricated using the fabricating member fitted to the work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cardboard sheet box making machine for processing a plate-shaped corrugated cardboard sheet fed from a sheet feeding means, which is a processed body provided with a processing member such as a printing plate. is there.

[0002]

2. Description of the Related Art As shown in FIG. 8, a corrugated paperboard box making machine 48 mainly supplies a corrugated paperboard sheet D to a paper feed unit 49 and a desired printing on the corrugated paperboard sheet D fed from the paper feed unit 49. The first printing unit 54 and the second printing unit 62 that perform the process, and the creaser unit 7 that performs the ruled line processing.
0, a slotter unit 75 for grooving, and a die cutting unit 82 for punching. In the corrugated board box making machine 48, the combination of these units varies depending on the purpose of production and the like.
In the case of color printing, there are three printing units, or the die-cut unit may not be combined unless there is a purpose of punching. Further, depending on the order of production, there is also a usage mode in which only printing, only grooving, or punching is performed.

In the paper feeding unit 49, a paper feeding table 50
A corrugated paperboard sheet D is stacked on the paper, and a paper feeding device 52 is arranged to feed the stacked corrugated paperboard sheets D one by one toward a downstream process. The corrugated board sheet D fed by the paper feeding device 52 is fed by the feed roll 5
It is sandwiched between 3a and 53b and sent to the downstream process. 5 in the figure
1 is a corrugated cardboard sheet D placed on the paper feed table 50
It is a back guide that regulates the rear end portion.

In the first and second printing units 54 and 62, printing cylinders 55 and 63, on which desired printing plates 56 and 64 are respectively wound, and an ink transfer roll 57 that transfers ink to the printing plates 56 and 64. , 65 and squeezing rolls 58, 66 which contact the ink transfer rolls 57, 65 and rotate in opposite directions to squeeze the ink to form an appropriate ink film on the surfaces of the ink transfer rolls 57, 65. To be done.
Then, the ink transfer rolls 57 and 65 and the squeeze roll 5
Ink reservoir parts Z3 and Z4 are formed between
Ink is supplied by an ink supply device (not shown),
As described above, the ink is applied to the ink transfer rolls 57, 65.
And squeezing by the squeezing rolls 58 and 66 to form an appropriate film on the outer peripheral surfaces of the ink transfer rolls 57 and 65 and transfer them to the printing plate. Further, press rolls 59 and 67 are arranged at positions facing the above-mentioned printing cylinders 55 and 63 with the corrugated board sheet conveying line PL sandwiched therebetween, and the fed corrugated sheet D is wound around the printing cylinders 55 and 63, respectively. The desired printing is performed by sandwiching the printing plates 56 and 64 and the press rolls 59 and 67. Further, sheet conveying devices 60 and 68 are arranged in the printing units 54 and 62. Although there are various types of sheet conveying devices, for example, the sheet conveying device 6 shown in FIG.
0 and 68 are cardboard sheets D due to the action of suction.
An apparatus for sucking and conveying the sheet to the sheet feeding members 61 and 69 has been disclosed.

Subsequently, in the creaser unit 70, an upper ruled line roll 71 is sandwiched across the corrugated paperboard sheet conveying line PL.
And the lower ruled line roll 72 are disposed so as to face each other, and a ruled line is applied to a desired position of the corrugated cardboard sheet D to be fed. Also in the creaser unit 70, the printing units 54, 62
A sheet transporting device 73 similar to the sheet transporting devices 60 and 68 in FIG. 6 is provided, and the corrugated cardboard sheet D is sucked and transported by the sheet feeding member 74 by the action of suction.

The slotter unit 75 has two slotter knives attached to one slotter shaft, which is referred to as a single slotter in the art, and one slotter knife attached to one slotter shaft. There are two types of slotters referred to in the art as double slotters. The slotter disclosed in FIG. 8 discloses an example of the former single slotter, in which the first slotter knife 77 is sandwiched across the corrugated cardboard sheet conveying line PL.
And an upper slotter 76 with a second slotter knife 78
And a lower slotter 79 at a position facing each upper slotter 76 with the corrugated cardboard sheet conveying line PL interposed therebetween.
And the first slotter knife 77 and the second slotter knife 78 of the upper slotter 76 and the lower slotter 7 respectively.
With 9, the groove cutting process is performed at a desired position of the fed corrugated board sheet D. A sheet conveying device 80 similar to the printing units 54 and 62 is also arranged in the slotter unit 75, and the corrugated cardboard sheet D is sucked and conveyed by the sheet feeding member 81 by the action of suction.

The die-cutting unit 82 is provided with a die cylinder 83 and an anvil cylinder 85 to which a punching die 84 is attached so as to sandwich the corrugated cardboard sheet conveying line PL, and punches the corrugated sheet D to be fed at a desired position. Give.

[0008] And, these corrugated board sheet box making machine 48
Each unit is driven by a drive force transmitted by a main drive device 87 by a drive transmission means (not shown) such as a gear or a line shaft. Then, the main drive device 87
Are driven based on commands from main controller 86.

In the corrugated board sheet box making machine 48 constructed as described above, the corrugated board sheet D fed from the sheet feeding unit 49 is transferred to each of the sheet conveying devices 60, 68, 73, 80.
While being transported by the first and second printing units 54,
The desired printing is performed at 62, the creasing unit 70 performs ruled line processing, the slotter unit 75 performs grooving processing, and the die cutting unit 82 performs punching processing.

Generally, in the corrugated board sheet box making machine 48, each unit 49, 54,
62, 70, 75, 82 are operated at a desired speed. Then, the printing cylinders 55 and 63 of the printing units 54 and 62 and the upper slotter 7 of the slotter unit 75.
6 and the die cylinder 83 of the die cut unit 82 each make one rotation, the respective units 54, 6
Each processing is performed on the corrugated board sheet D fed by 2,75,82. The paper feeding unit 49 mechanically or electrically feeds the corrugated cardboard sheets D one by one at a predetermined cycle in accordance with the operating speed of each of the units 54, 62, 75, 82, each one rotation. That is, the corrugated board sheet box making machine 48 described above is operated at a desired speed, and the corrugated board sheet box making machine 48 makes one rotation while the printing cylinders 55 and 63, the upper slotter 76 and the die cylinder 83 are rotated once. The paper feed operation method in which one sheet of D is fed is adopted. Each unit 49, 5
Since 4, 62, 70, 75 and 82 are driven by the main drive device 87, if the effective machining circumference length of the printing cylinder 55 is Lx as shown in FIG. The length of corrugated cardboard sheet that can be formed is Lx or less. Therefore, when the length of the corrugated board sheet is almost the same as the length of the printing cylinder, the corrugated board sheet is conveyed and processed in a state where there is almost no gap between the corrugated board sheets D fed by the paper feeding unit 49. Is Lx
In the following, for example, when Ly, the space between the corrugated cardboard sheets D is L
Sheets are to be fed at z intervals.

[0011]

DISCLOSURE OF THE INVENTION In a corrugated board box making machine, generally, a radial load of a bearing portion, vibration of each portion, and machining are performed in accordance with rotation of a workpiece such as a printing cylinder or a slotter that constitutes the box. It is known that the maximum operating peripheral speed of the processed body is substantially constant regardless of the size of the diameter of the processed body due to restrictions such as maintaining the synchronous feeding accuracy between the corrugated board sheet and the processed body. Therefore, when the diameter of the processed body is small, that is, when the circumference of the processed body is small,
The maximum operating rotational speed of the workpiece is relatively high, but when the diameter of the workpiece is large, that is, when the peripheral length of the workpiece is large, the maximum operating rotational speed of the workpiece is relatively low. .

On the other hand, the conventional corrugated board box making machine adopts a method of feeding one corrugated board sheet while the processed body is rotated once, and therefore, it is necessary to operate at a relatively low speed. In a corrugated paperboard box making machine having a large diameter of the processed body, it is significantly smaller than the perimeter of the processed body.
For example, when processing a sheet having a length in the feeding direction which is less than half the circumference, the productivity thereof, that is, the low sheet processing area per hour has been a problem.

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 in particular, it is necessary to operate at low and medium speeds. In a medium-sized corrugated board box making machine, it is an object of the present invention to double or more increase productivity when processing a corrugated board sheet having a peripheral length of half or less of the processed body.

[0014]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and preferably achieve an intended purpose, the present invention provides a paper feed unit having a paper feed device for feeding corrugated cardboard sheets, and a paper feed unit. In the corrugated board sheet box making machine which mounts a processed member on a machined body provided in a processing section disposed downstream of the machine and performs desired processing on a corrugated cardboard sheet to be fed, the corrugated board sheet machine is provided in the paper feeding section. A sheet feeding drive device that drives the sheet feeding device, a sheet feeding unit drive control device that controls driving of the sheet feeding drive device, a workpiece driving device that drives the workpiece, and a driving of the workpiece driving device. The processing unit drive control device for controlling, the paper feeding unit drive control device, and a main control device for controlling the processing unit drive control device, the main control device from the length of the corrugated board sheet involved in the production Number of corrugated cardboard sheets fed per revolution of processed body with respect to body circumference , A command associated with the production is given to the paper feed unit drive control device and the processing unit drive control device, the paper feed unit drive control device gives a paper feed drive device drive signal to the paper feed drive device, and The part drive control device gives a work body drive signal to the work body drive device to drive the paper feed part drive device and the work part drive device in synchronism with each other, and the work body with respect to the work body peripheral length from the paper feed device. A corrugated board sheet box making machine for feeding corrugated board sheets per one rotation and processing the corrugated board sheets fed from the paper feeding device with a processing member attached to the processing body.

Further, the main control device receives a signal by the drive of the paper feed drive and a signal by the drive of the workpiece drive device, and a signal by the drive of the paper feed drive,
A control for comparing the signal from the drive of the work body drive device and adjusting the paper feed unit drive control device and the work unit drive control device to synchronously drive the paper feed drive device and the work body drive device is performed. This is a cardboard sheet box making machine.

[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. As shown in FIG. 1, the configuration of the corrugated board sheet box making machine 1 according to the present invention mainly includes a paper feed unit 2 for feeding the corrugated board sheet D and a first printing unit 7 for printing on the fed corrugated board sheet D. A second printing unit 16, a creaser slotter unit 25 in which a creaser for ruled lines and a slotter for groove cutting are integrated, and a die-cut unit 36 for punching.
Consists of. The creaser slotter unit may be an integral type as shown in FIG. 1 or a split type as shown in FIG. Further, the slotter may be a double slotter as described above. 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. Also, depending on the order to be produced, only printing or only grooving,
There is also a usage mode in which only punching is performed.

In the paper feeding unit 2, the corrugated cardboard sheets D are stacked on the paper feeding table 3, and the paper feeding device 5 is arranged to feed the stacked corrugated cardboard sheets D one by one toward the downstream process. To be done. The corrugated board sheet D fed from the paper feeding device 5 is nipped by the feed rolls 6a and 6b and fed to the downstream process. Reference numeral 4 in the drawing is a back guide that defines the rear end portion of the corrugated board sheet D placed on the paper feed table 3. Reference numeral 86 in the figure denotes the sheet feeding unit 2
It is a corrugated board sheet feeding detector for checking whether or not the corrugated board sheet D is fed by the paper feeding device 5 of FIG.

The first and second printing units 7, 16 are
Printing cylinders 8, 17 around which desired printing plates 9, 10, 18, 19 are wound, ink transfer rolls 11, 20 for transferring ink to the printing plates 9, 10, 18, 19 and ink transfer rolls, respectively. The squeeze rolls 12 and 21 contact the slabs 11 and 20 and rotate in opposite directions to squeeze the ink to form a proper ink film on the surfaces of the ink transfer rolls 11 and 20. The ink pools Z1 and Z2 are provided between the ink transfer rolls 11 and 20 and the squeezing rolls 12 and 21.
Is formed, and the ink is supplied by an ink supply device (not shown), and the ink is squeezed by the ink transfer rolls 11 and 20 and the squeezing rolls 12 and 21 as described above, and the ink is appropriately applied to the outer peripheral surface of the ink transfer rolls 11 and 20. It transforms to a printing plate with a different film. The press rolls 13 and 22 are disposed at positions facing the above-described printing cylinders 8 and 17 with the corrugated board sheet conveying line PL interposed therebetween, and the fed corrugated board sheet D is wound around the printing cylinders 8 and 17, respectively. The plates 9, 10, 18, 19 and the press rolls 13, 22 are held between them to perform desired printing. Also, the printing units 7, 1
Sheet conveying devices 14 and 23 are arranged in the unit 6. Although there are various types of sheet conveying devices, for example, the sheet conveying devices 14 and 23 in FIG. 1 disclose a device that sucks the corrugated board sheet D to the sheet feeding members 15 and 24 and conveys it by the action of suction.

Subsequently, in the creaser slotter unit 25, an upper ruled line roll 26 and a lower ruled line roll 27 are arranged opposite to each other with the corrugated cardboard sheet conveying line PL interposed therebetween, and the ruled lines are formed at desired positions of the fed corrugated cardboard sheet D. Give. Then, the single slotter type is used for the slotter, and the upper slotter having the first slotter knife 29, the second slotter knife 30, the third slotter knife 31, and the fourth slotter knife 32 is sandwiched across the corrugated board sheet conveying line PL. 28 and the corrugated paperboard sheet conveyance line PL,
A lower slotter 33 is disposed at a position facing each upper slotter 28, and each slotter knife 29, 30, 31, 32 of the upper slotter 28 and the lower slotter 33 are arranged.
Then, the groove cutting process is performed at a desired position of the fed corrugated board sheet D. And the creaser slotter unit 2
In 5 as well, a sheet conveying device 34 similar to the printing units 7 and 16 is arranged, and the corrugated sheet D is sucked by the sheet feeding member 35 by the action of suction to convey the sheet. Further, the die cutting unit 36 has a punching die 38 with a corrugated cardboard sheet conveying line PL interposed therebetween.
A die cylinder 37 to which 39 is attached and an anvil cylinder 36 are provided, and a corrugated sheet D to be fed is punched at a desired position.

As shown in FIG. 1, in the corrugated board sheet box making machine 1 according to the present invention, the paper feeding unit 2 has a paper feeding drive device 43.
Each of the processed bodies of the printing units 7 and 16, the creaser slotter unit 25, and the die cut unit 36 is driven by the processed body driving device 45 to process the corrugated cardboard sheet D fed at a constant speed.

As described above, the object of the present invention is to feed the paper feed unit 2 to the paper feed drive device 43 and the workpiece drive device 4.
By providing 5 and 5, respectively, the processed body driving device 45 allows the processed units 8, 17, 28 of the printing units 7, 16, the creaser slotter unit 25, and the die cut unit 36 to be processed.
Rotate 37 at equal rotational speed. When the length of the corrugated cardboard sheet to be processed is, for example, half or less of the effective perimeter of the printing cylinders 8 and 17, the sheet feeding drive device 43 of the sheet feeding unit 2 is processed.
Is controlled to make an integer number of corrugated cardboard sheets for the effective processing peripheral length dimension of each processed body 8, 17, 28, 37 while the processed body 8, 17, 28, 37 makes one rotation. The purpose is to feed the sheets toward the respective processed bodies 8, 17, 28, 37. In order to obtain such a cardboard sheet processing form, for example, when the effective processing perimeter of the printing cylinders 7 and 16 is equal to or slightly longer than the cardboard sheet length of two corrugated cardboard sheets of the production order, printing is performed. Printing plates 9, 1 for two corrugated board sheets so as to match the feeding interval of the corrugated board sheets fed to the cylinders 8, 17.
Wind up 0, 18, and 19. Then, the respective processed bodies 8,
By rotating 17, 28, 37, the respective processed bodies 8, 1
The paper feed drive control device 42a adjusts the paper feed drive device 43 in accordance with the rotation speeds of 7, 28, 37 and the printing plates 9, 10, 18, 19 wound around the printing cylinders 8, 17, for example. Two corrugated paperboard sheets D are fed while the printing cylinders 8 and 17 are controlled to make one rotation.

First, the paper feeding unit 2 has a paper feeding table 3
A sheet feeding device 5 driven by a sheet feeding driving device 43 that sequentially feeds sheets from the lowermost sheet of the corrugated cardboard sheets D stacked thereon is provided. There are various types of sheet feeding devices, but in the present invention, the feeding device itself is of a kicker type, a rotary type or an endless belt type that is generally used in the industry. Any of the paper devices may be used. The paper feeding drive device 43 for driving the paper feeding device 5 is, as shown in FIG.
Driving is performed by the command of 2a. A servomotor or the like is generally used as the sheet feeding drive device 43, but any sheet feeding drive device may be used as long as the object of the present invention can be achieved. Similarly, as shown in FIG. 2, the sheet feeding unit drive control device 42a receives various commands and signals from the main control device 41 that controls the operation of the corrugated board sheet box making machine 1 as a whole, and selects a corrugated board sheet suitable for the production. The paper feeding drive device 43 is controlled so that the paper can be fed. The drive control device of the present invention will be described later.

Next, the construction of the printing cylinders 7, 16 and other processing units 25, 36 will be described. In the gist of the present invention, as described above, each processing unit 7, 16, 2
Since the rotating speeds of 5 and 36 are equal to each other, one processing body drive unit 45 is used for each processing unit 7, 16, 25, 36.
Rotation drive. And each processing unit 7, 16,
The sheet feeding unit 2 is configured to feed the integral number of corrugated cardboard sheets for the effective processing peripheral lengths of 25 and 36.
It is driven by 3. For example, each processed body 8, 1
When two corrugated cardboard sheets are passed through while 7, 28 and 37 rotate once, the printing cylinders 8 and 17 of the printing units 7 and 16, the slotter 28 of the creaser slotter unit 25 and the die of the die cutting unit 36 are inserted. Since the two corrugated cardboard sheets D are fed while the processed bodies 8, 17, 28, and 37 make one revolution in the cylinder 37, the printing cylinders 8 and 17 of the printing units 7 and 16 and the slotter of the creaser slotter unit 25. 28, the die cylinder 37, etc. of the die cut unit 36, the corrugated cardboard sheet D is fed during one rotation, and two printing plates 9, 10, 18,
19, slotter knives 29, 30, 31, 32, punching dies 38, 39, etc. must be mounted respectively.

Next, the configuration and role of the control device of the present invention for the corrugated board sheet box making machine 1 will be described.
The control device of the present invention for the corrugated board sheet box making machine 1 is
According to the production order, a main controller 41 that controls the cardboard sheet box making machine 1 as a whole and a sheet feeding unit drive controller 42a that controls a sheet feeding driving device 43 that drives the sheet feeding device 5 of the sheet feeding unit 2. And each processed body 8, 17, 2 of each unit 25, 36 including the printing units 7, 16.
And a machining unit drive controller 42b for controlling a workpiece driving device 45 that rotationally drives 8, 37. This will be described with reference to FIG. 2, which shows the configuration of the drive control device of the present invention. A main control device 4 that controls the overall operation of the corrugated board sheet box making machine 1.
1 is the processing body 8, 17, 28 in the production order,
The paper feed unit drive control device 42a for controlling the paper feed drive device 43 for driving the paper feed device 5 of the paper feed unit 2 by obtaining the number n of corrugated paperboard sheets fed per one rotation 37, and the paper feed unit 2 Other than the units 7, 16, 25, 36, the processing unit drive control unit 42b for controlling the processing unit drive unit 45 for driving the respective processing units 8, 17, 28, 37 is supplied with the sheet feeding unit position synchronization signal S6. The workpiece position synchronization signal S1, the sheet feeding device speed signal S7, and the workpiece speed signal S2 are transmitted. Here, the number n of fed corrugated board sheets D is a single number or a plurality of numbers. Then, the processing unit drive control device 42b
On the basis of the given workpiece position synchronization signal S1 and the workpiece velocity signal S2, the workpiece drive signal S3 is sent to the workpiece drive device 45 so as to perform the operation machining suitable for the production order.
Is transmitted to drive the workpiece driving device 45. And
The drive status of the work body drive device 45 is the work body drive device 4
The position signal generator 46 such as a pulse generator provided in FIG. 5 feeds back the information to the machining unit drive controller 42b as a workpiece position signal S4 and also transmits the signal S4 to the main controller 41. . When these operations are started, the workpiece position reference detector 46x always detects the reference positions of the workpieces 8, 17, 28, 37, and the detection is performed as the workpiece position reference signal S5 as the main control. By transmitting to the device 41, each processed body 8, 1
The reference positions of 7, 28 and 37 are confirmed. Then, in parallel with the control of the processing unit drive control device 42b, the paper feed unit drive control device 42a provided from the main control device 41 also uses the paper feed device position synchronization signal S6 and the paper feed device speed signal S7. A paper feed drive signal S8 is transmitted to the paper feed drive device 43 to drive the paper feed drive device 43 so that the paper feed operation is suitable for the production order. The driving status of the sheet feeding drive device 43 is sent from the position signal generator 44 such as a pulse generator provided in the sheet feeding drive device 43 to the sheet feeding unit drive control device 42a.
The signal S9 is also sent to the main controller 41. When these operations are started, the paper feeding device position reference detector 44x always detects the reference position of the paper feeding device 5 and sends the detection to the main control device 41 as a paper feeding position reference signal S10. Therefore, the reference position of the sheet feeding device 5 is always confirmed. Then, the main controller 41 is controlled by the machining unit drive controller 42b, and the machining object position signal S4 and the machining object position reference detector 46x transmitted as the processing information concerned are processed by the machining objects 8, 17, 28 ,.
The reference position of 37 is detected, the detection is controlled by the workpiece position reference signal S5 and the sheet feeding unit drive control device 42a, and the sheet feeding device position signal S9 is transmitted as the processing information.
And the sheet feeding device position reference detector 44x detect the reference position of the sheet feeding device 5, and the detection is performed by fetching the sheet feeding position reference signal S10 and comparing the signals with each other.
7, 28, 37 and the sheet feeding device 5 are constantly grasped, and if an error occurs between them, the main controller 41 sends the workpiece speed signal S2 or the feed to the machining unit drive controller 42b. A paper feed speed signal S7 is sent to the paper drive controller 42a.
Either one or each of the above is corrected to control the above-mentioned error to the minimum or eliminate the error so as to match.

The synchronous feeding state of the corrugated paperboard sheet D having the above-mentioned structure, for example, in the first printing unit 7 will be specifically described. When the circumference of the printing cylinder is L as shown in FIG. 3, printing is performed. It is assumed that two corrugated cardboard sheets D having a sheet length of L1 are fed while the cylinder 8 makes one rotation. In this case, a gap A1 that is one half of the value obtained by subtracting the length L1 of the corrugated board sheet for two sheets from the peripheral length L of the printing cylinder is opened between the corrugated board sheets. Therefore, as shown in FIG. 4, in the printing cylinder 8, two printing plates 9 and 10 having a length L1 are attached to the printing film 47 with a gap A1 therebetween, and the printing film 47 is printed. 8
Wrapped around. Assuming that the peripheral speed of the outer peripheral surface of the printing plate wound around the printing cylinder 8 is V1, the fed corrugated cardboard sheet D
It is necessary to also set the feeding speed of V1 to V1. Therefore, in the paper feeding unit 2, in order to feed the corrugated paperboard sheet D having the sheet length L1 toward the downstream process at the speed V1 while the printing cylinder 8 makes one rotation, the paper feeding unit drive control of the paper feeding unit 2 is performed. The device 42a must drive the paper feeding drive device 43 with a constant speed curve as shown in FIG. 5, for example.

FIG. 6 is a table showing the sheet feeding drive operation of the sheet feeding unit 2 and the rotation of the printing cylinder 8 of the printing unit 7. In FIG. 6, the sheet length of the sheet feeding unit 2 is L1 while the printing cylinder 8 having the perimeter of L makes one rotation.
When two corrugated cardboard sheets D are fed with a gap A1 and when the printing cylinder 8 having a perimeter L is rotated once, the corrugated cardboard sheet D having a sheet length L2 is opened with a gap A2 in the paper feeding unit 2. The case of feeding a single sheet is shown.

FIG. 7 shows an example in which two sheets are fed from the sheet feeding unit 2 while the slotter unit 25 makes one rotation. Paper line P that becomes a corrugated board sheet conveyance line
Four sets of arc-shaped slotter knives 29, 30, 31, 32 facing the annular lower slotter knife 33 with L sandwiched therebetween are attached and the corrugated board sheet D to be fed is subjected to grooving. Since the peripheral speed of the slotter 28 is V1 and is constantly rotating, the feeding speed of the corrugated board sheet D is also V1, and while the slotter 28 makes one rotation, two corrugated board sheets D having a sheet length of L1 are fed, Grooving is performed at a desired position of each corrugated board sheet D. Die cut unit 36
The die cylinder 37 in FIG. 2 is similar to the printing cylinders 8 and 17, so it is not shown.
7, a punching die 38 of length L1 with a gap of A1,
39 is attached to two sheets. Since the peripheral speed of the die cylinder 37 is V1 and is constantly rotating, the feeding speed of the corrugated cardboard sheet D to be fed is also V1, and while the die cylinder 37 makes one revolution, the corrugated cardboard sheet D having a sheet length of L1 is 2 Sheets are fed and punched at desired positions of each corrugated board sheet D.

Next, an example of the method of use according to the present invention will be described. In the corrugated board sheet box making machine 1 according to the present invention, the main control device 41 first calls an order to be produced, and the processed bodies 8, 17, 28,
Number of corrugated cardboard sheets fed per one rotation of 37
To confirm. Specifically, in this embodiment, each processed body 8, 1
Since two corrugated board sheets D are fed and processed while one rotation of 7, 28 and 37 is performed, it is determined here that the corrugated board sheet feed number n is two.

Then, the units 2, 7, 16, 25 and 36 of the corrugated board sheet box making machine 1 are prepared for the order production. Specifically, the printing unit 7,
16, the slotter unit 25, or the die-cut unit 36, the printing plate 9, 1 according to the production order concerned.
0,18,19 and slotter knife 29,30,31,3
2 or the operator attaches the punching dies 38, 39. The workpiece position synchronization signal S1 and the workpiece speed signal S2 are sent to the processing unit drive control device 42b, and the information such as the sheet feeding device position synchronization signal S6 and the sheet feeding device speed signal S7 are sent to the sheet feeding unit drive control device 42a. Is transmitted to the work body drive control device 42b. The paper feed unit drive controller 42a receives the above information transmitted from the main controller 41 and prepares for feeding the corrugated board sheet D.

After the corrugated board sheet box making machine 1 is prepared as described above and the corrugated board sheet D of the order to be produced is placed on the sheet feeding table 3 of the sheet feeding unit 2, the corrugated sheet sheet box making machine 1 is mounted. When activated, each processing unit 16, 2 arranged downstream of the first printing unit 7 and below
In reference numerals 5 and 36, the work body drive unit 45, which receives each command from the main control unit 41 via the machining unit drive control unit 42b, is activated to start the operation. Similarly, in the sheet feeding unit 2, the sheet feeding driving device 43, which receives each command from the main control device 41 via the sheet feeding unit driving control device 42, starts up and starts operating. At this time, the sheet feeding unit drive control device 42a and the processing unit drive control device 42b are instructed by the main control device 41 to cause the sheet feeding drive device 43 and the workpiece drive device 45 to perform a synchronous operation. Therefore, when the sheet feeding drive controller 42a receives a sheet feeding signal (not shown) from the main controller 41, the sheet feeding device 5 of the sheet feeding unit 2 directs the corrugated board sheet D toward the downstream process such as the printing cylinders 8 and 17. Processed bodies 28, 37
The sheet feeding is started so that the feeding speed V1 is the same as the rotating speed V1. Then, the paper feeding drive device 4 of the paper feeding unit 2
In response to a command from the paper feed unit drive controller 42a, 3 is controlled and adjusted so as to feed two corrugated cardboard sheets D while each processed body 28, 37 such as the printing cylinders 8, 17 makes one revolution. Therefore, the relationship between the corrugated board sheet D fed from the paper feeding unit 2 and the printing cylinders 8 and 17 is such that the corrugated board sheet D is fed in a cycle as shown in FIG. Processing unit drive control device 42 received
Speed V synchronized with the corrugated cardboard sheet D fed by b
Printing is performed by the printing plates 9, 10, 18, 19 wound around the printing cylinders 8, 17 which rotate at 1. Similarly, in the slotter unit 25, the corrugated board sheet D fed by the slotter knives 29, 30, 31, 32 attached to the slotter 28 is subjected to grooving,
In the die cut unit 36, the corrugated cardboard sheet D fed by the punching dies 38 and 39 attached to the die cylinder 37 is punched.

In the above-described embodiment, the case where two corrugated paperboard sheets D are fed while the printing cylinder 8 or the like makes one revolution has been described. The basic control is the same when a corrugated cardboard sheet is fed. That is, each printing plate, slotter knife, punching die (not shown) corresponding to the three corrugated cardboard sheets D fed to the printing cylinders 8 and 17, the slotter 28, and the die cylinder 37 while each processed body makes one revolution. 6 is attached, and the paper feed section drive control device 42a controls and adjusts so as to feed three corrugated cardboard sheets D while each processed body 8, 17, 28, 37 makes one rotation, and is shown in FIG. The corrugated cardboard sheet D is fed at such a cycle, printing is performed by the printing plate wound around the printing cylinders 8 and 17, and in the slotter unit 25, the corrugated sheet is fed by the slotter knife attached to the slotter 28. Groove cutting is performed on the corrugated board, and in the die cutting unit 36, the corrugated board sheet fed by the punching die attached to the die cylinder 37. Processing is carried out punching in D.

Further, the corrugated paper sheet D is fed by the paper feeding unit 2.
The state in which the sheet is being fed is sent to the main controller 41 as a workpiece position reference signal S5 and a sheet feeding device position reference signal S10. Similarly, each processing unit 7, 16, such as a printing unit,
The production states of 25 and 36 are also sent to the main control device 41 as the workpiece position signal S4 and the workpiece position reference signal S5. The main controller 41 controls the various signals S4, S5, S described above.
6, S7, the synchronous drive states of the respective processed bodies 8, 17, 28, 37 and the sheet feeding device 5 are grasped and compared, and the synchronous drive error between the respective processed bodies 8, 17, 28, 37 and the sheet feeding device 5 is compared. If there is, each processing 8, 17,
28 and 37 and the sheet feeding device 5 are controlled to be driven in synchronization.

[0033]

According to the corrugated paperboard box making machine of the present invention, a paper feeding drive device different from the drive device for driving the downstream process after the printing unit is provided in the paper feed unit, and the paper feed drive device is fed. The paper drive control device feeds a plurality of sheets while the processed body of each processing unit makes one rotation, and the processing is performed by each processed body. Therefore, each processed body is fed and processed during one rotation. The productivity is equal to the number of corrugated cardboard sheets. That is, the corrugated board box making machine is 10 minutes per minute.
If two corrugated cardboard sheets are fed and processed while each processed body makes one revolution while operating at a production speed of 0 corrugated sheets, the corrugated board sheet box making machine will produce 200 corrugated sheets per minute. Will be produced in. Similarly, if three corrugated board sheets are fed and processed while each processed body makes one revolution, the corrugated board box making machine is producing at a production rate of 300 corrugated sheets per minute. Therefore, even if the production speed of the processed body in the downstream process after the printing unit is low, high productivity can be obtained as the corrugated board sheet box making machine.

Further, by only possessing one corrugated board sheet box making machine, it is possible to process from large to small corrugated board sheets with high productivity, and it is possible to improve business opportunities and accompanying sales effects. became. Further, it is possible to reduce the capital investment burden on the corrugated board manufacturing maker, and to solve the problems of the installation space and the increase in the number of operators who operate the corrugated board box making machine and the labor cost associated therewith.

As described above, according to the present invention, it is possible to achieve the object of improving the productivity and expanding the profit by enabling a single corrugated board sheet box making machine to deal with a wide corrugated board sheet processing range. Made possible

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a cardboard sheet box making machine of the present invention.

FIG. 2 is a control configuration diagram of a corrugated board box making machine of the present invention.

FIG. 3 is a conceptual configuration diagram showing an operation relating to sheet feeding and printing in the corrugated board sheet box making machine of the present invention.

FIG. 4 is a diagram showing a printing plate wound around a printing cylinder according to the present invention.

FIG. 5 is a sheet feeding cycle diagram of the sheet feeding device in the sheet feeding unit of the present invention.

FIG. 6 is a development view showing the relationship between the rotation of the processed body of the present invention and the fed and fed corrugated cardboard sheets.

FIG. 7 is a conceptual configuration diagram showing a configuration of a slotter in the corrugated board sheet box making machine of the present invention.

FIG. 8 is a configuration diagram showing a configuration of a conventional corrugated board sheet box making machine.

FIG. 9 is a conceptual configuration diagram showing an operation relating to sheet feeding and printing in a conventional corrugated board sheet box making machine.

FIG. 10 is an operation diagram which points out a problem of the production form in the conventional corrugated board sheet box making machine.

[Explanation of symbols]

1 Cardboard sheet box making machine 2 paper feeder 5 Paper feeder 7,16 Printing department 8,17 printing cylinder 9, 10, 18, 19 stamped plates 25 Creeser Slotter 28 Upper Slotter 29, 30, 31, 32 Slotter knife 36 Die cut part 37,38 punching dies 41 Main controller 42a Feeder drive control device 42b Processing unit drive control device 43 Paper feed drive 45 Workpiece drive

Claims (2)

[Claims] 1. A paper feeding device for feeding a corrugated cardboard sheet (D)
A paper feed unit (2) having (5), and a processed body (8, 17, 28, 28) provided in a processing unit (7, 16, 25, 36) arranged downstream of the paper feed unit (2). 37)
In the corrugated board box making machine that attaches the processed member (9, 10, 18, 19, 29, 30, 31, 32, 38, 39) to the corrugated board sheet (D) to be processed as desired A sheet feeding drive device (43) for driving a sheet feeding device (5) provided in the sheet feeding part (2), and a sheet feeding part drive control device (43) for controlling the driving of the sheet feeding drive device (43) 42a) and a workpiece driving device (45) for driving the workpieces (8, 17, 28, 37)
A processing unit drive control device (42b) for controlling the drive of the processed body drive device (45), the paper feed unit drive control device (42a) and the processing unit drive control device (42).
b) and a main control device (41) for controlling the main control device (41), the main control device (41),
From (L1), drive the paper feed unit to supply the number (n) of corrugated cardboard sheets per revolution of the work body to the circumference of the work body (L) and the command (S6, S7, S1, S2) associated with the production. The control unit (42a) and the processing unit drive control unit (42b), and the paper feed unit drive control unit (42a) supplies the paper feed drive unit drive signal (S8) to the paper feed drive unit (43). The processing section drive control device (42b) gives a processing body drive signal (S3) to the processing body drive device (45) so that the paper feeding section drive device (43) and the processing section drive device (45) The paper feed device
The corrugated cardboard sheet (D) fed from the paper feeding device (5) by feeding the corrugated sheet number per sheet (n) per revolution of the workpiece from (5) to the peripheral length (L) of the workpiece. The processed body (8, 17, 28,
37) Worked parts attached to (9,10,18,19,29,30,31,32,38,3
Cardboard sheet box making machine that processes in 9). 2. The main controller (41) is configured to drive signals (S9, S10) by the drive of the paper feeding drive device (43) and a work body drive device (45).
The signals (S4, S5) generated by driving the sheet feeding driving device (43) and the signals (S4, S5) generated by driving the workpiece driving device (45) are received. And adjusting the paper feed section drive control device (42a) and the processing section drive control device (42b) so as to drive the paper feed drive device (43) and the workpiece drive device (45) in synchronization. Claim 1 which performs the control to
Cardboard sheet box making machine described.