JP2018103536A - Corrugated board sheet carton former - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slotter device capable of switching two production modes and displaying values easily comprehensive to an operator, as parameters for positioning slotter blades.SOLUTION: In a corrugated board sheet carton former, a slotter device 6 comprises: a first slotter unit 61 including: a first slotter 610; a first stationary blade 612; and a first movable blade 613. The slotter device further comprises a second slotter unit 62 including: a second slotter 620; a second stationary blade 622; and a second movable blade 623. A control unit switches the slotter device between a first production mode and a second production mode. In particular, the control unit controls the first and second stationary blades 612, 622, using first and second positioning parameters, respectively, and when implementing the second production mode, compensates values corresponding to the first positioning parameter to be adaptable to processing dimensions for the corrugated board sheet, and display the values.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a corrugated cardboard box making machine, and more particularly to a corrugated cardboard box making machine having a slotter device for grooving a corrugated cardboard sheet.

  Conventionally, a sheet feeding device that feeds cardboard sheets one by one, a printing device that prints on the cardboard sheets fed by the sheet feeding device, and a grooving process (slot groove processing) on the cardboard sheets that are printed by the printing device A corrugated board box making machine equipped with a slotter device or the like is known. This slotter device typically performs grooving at two locations, a downstream end (corresponding to the upper flap portion) and an upstream end (corresponding to the lower flap portion) of the corrugated cardboard sheet being conveyed. .

  For example, Patent Document 1 discloses that in a corrugated sheet box making machine, two corrugated sheets having a relatively short length in the conveying direction are fed while the printing cylinder of the printing apparatus rotates once, On the other hand, a production method (hereinafter, referred to as “2-up production” as appropriate) is disclosed in which processing is performed. This method aims to increase the production efficiency of boxes in a corrugated board box making machine. When performing 2-up production, a slotter provided on the downstream side of the printing apparatus after performing predetermined printing on the corrugated sheet before and after being continuously fed by two printing plates wound around a printing cylinder Depending on the apparatus, it is necessary to perform grooving processing on the upper flap portion and the lower flap portion of the front and rear corrugated cardboard sheets.

  On the other hand, Patent Document 2 discloses a slotter device in which two slotter units each provided with two slotter blades on one rotating cylinder (upper slotter) are arranged side by side along the conveying direction of the cardboard sheet. ing.

JP 2003-127251 A JP 2002-67190 A

  A slotter device including two slotter units as described in Patent Document 2 described above is considered to be effective when grooving a continuous front and back corrugated cardboard sheet in 2-up production. Here, with reference to FIG. 19, the utilization method of the slotter apparatus provided with the two slotter units each provided with the two slotter blades is examined.

  FIGS. 19A and 19B are explanatory views of two production modes in the slotter device 8 having the first and second slotter units 81 and 82. FIG. As shown in FIGS. 19A and 19B, the first slotter unit 81 includes a first upper slotter 810 (not shown for the lower slotter), which is a rotating cylinder connected to a rotating shaft and rotated. Fixed on the outer periphery of the first upper slotter 810 and opposite to the direction of rotation (the direction of rotation of the first upper slotter 810 during the processing of the corrugated cardboard sheet and the direction indicated by the arrow in the first upper slotter 810 in FIG. 19) The first fixed slotter blade 812 having a square blade 812a at the end on the direction side and the first fixed slotter blade 812 provided to be movable in the circumferential direction on the outer periphery of the first upper slotter 810, and the square blade 813a at the end on the rotation direction side. 1 moving slotter blade 813. On the other hand, the second slotter unit 82 is provided downstream of the first slotter unit 81 in the cardboard sheet conveyance direction FD. Similarly to the first slotter unit 81, the second slotter unit 82 also has a second upper slotter 820 (not shown for the lower slotter), which is a rotating cylinder connected to a rotating shaft, and the second upper slotter 820. The second fixed slotter blade 822 having a square blade 822a at the end on the opposite side to the rotational direction and a second upper slotter 820 are provided so as to be movable in the circumferential direction. A second moving slotter blade 823 having a square blade 823a at the end portion on the side.

  In FIG. 19A, two corrugated sheets SH1 and SH2 are fed while the first and second upper slotters 810 and 820 make one rotation, and the grooving process for the two corrugated sheets SH1 and SH2 is performed. A production mode (which is performed to realize the above-described 2-up production and is hereinafter referred to as “single slotter mode” as appropriate) is performed by each of the first and second slotter units 81 and 82. In the single slotter mode, in the first slotter unit 81, the first fixed slotter blade 812 and the first moving slotter blade 813 are arranged on the outer periphery of the first upper slotter 810 and separated by a predetermined distance, and In the two-slotter unit 82, the second fixed slotter blade 822 and the second moving slotter blade 823 are arranged on the outer periphery of the second upper slotter 820 with a predetermined distance therebetween. In the state where the slotter blades are arranged in this way, the upper flap portion and the lower flap in the corrugated cardboard sheet SH1 on the downstream side by the second fixed slotter blade 822 and the second moving slotter blade 823 of the second slotter unit 82, respectively. Growing the portion, and grooving the upper flap portion and the lower flap portion in the upstream corrugated cardboard sheet SH2 by the first fixed slotter blade 812 and the first moving slotter blade 813 of the first slotter unit 81, respectively. To do.

  On the other hand, in FIG. 19B, only one cardboard sheet SH is fed while the first and second upper slotters 810 and 820 make one rotation, and the grooving process for the one cardboard sheet SH is performed as shown in FIG. Production mode (hereinafter referred to as “double slotter mode” where appropriate) produced by each of the first and second slotter units 81 and 82. Also, the viewpoint of comparing the production to which the double slotter mode is applied with the above-described two-up production. To “normal production”). In the double slotter mode, in the first slotter unit 81, the first fixed slotter blade 812 and the first moving slotter blade 813 are disposed so as to abut on the outer periphery of the first upper slotter 810, and the second slotter unit In 82, the second fixed slotter blade 822 and the second moving slotter blade 823 are arranged to abut on the outer periphery of the second upper slotter 820. That is, in the double slotter mode, one slotter blade in which the first fixed slotter blade 812 and the first moving slotter blade 813 are integrated is used, and the second fixed slotter blade 822 and the second moving slotter blade 823 are used. And one slotter blade integrated with each other. Then, with the slotter blades arranged in this way, the upper flap portion of the cardboard sheet SH is grooved by at least the second fixed slotter blade 822 of the second slotter unit 82, and the first slotter unit 81 The lower flap portion of the corrugated cardboard sheet SH is grooved by at least the first moving slotter blade 813. Such a double slotter mode is effective, for example, when producing a cardboard sheet having a large conveyance direction length.

  However, when the slotter device is operated by switching between the single slotter mode and the double slotter mode, there are the following problems.

  In both the single slotter mode and the double slotter mode, the first fixed slotter blade 812 is used on the basis of the downstream edge (front end) on the downstream side of the cardboard sheet in order to cut the cardboard sheet by the first slotter unit 81. Positioning control of the first fixed slotter blade 812 is set by setting a parameter (hereinafter referred to as “register current value” as appropriate) indicating the relative position at which the square blade 812a should be disposed with respect to the front end of the corrugated cardboard sheet. Is done. Similarly, in the second slotter unit 82, such a register current value is set for the second fixed slotter blade 822, and positioning control of the second fixed slotter blade 822 is performed.

  Further, the register current values as described above are also set for the first and second moving slotter blades 813 and 823. Specifically, with respect to the first moving slotter blade 813 of the first slotter unit 81, relative to the square blade 813a of the first moving slotter blade 813 when the square blade 812a of the first fixed slotter blade 812 is used as a reference. The register current value is defined by the position (corresponding to the circumferential length along the outer periphery of the first upper slotter 810). That is, the register current value indicating the relative position at which the square blade 813a of the first moving slotter blade 813 should be arranged with respect to the square blade 812a of the first fixed slotter blade 812 is set, and the first moving slotter blade 813 Positioning control is performed. Similarly, the second slotter unit 82 sets the register current value for the second moving slotter blade 823, and controls the positioning of the second moving slotter blade 823.

  As described above, in the single slotter mode, both the first and second slotter units 81 and 82 grooving the upper flap portion of the corrugated cardboard sheet with the first and second fixed slotter blades 812 and 822, and The lower flap portion of the cardboard sheet is grooved by the first and second moving slotter blades 813 and 823. Therefore, the register current value of the first and second fixed slotter blades 812 and 822 is the size of the upper flap of the corrugated cardboard sheet to be grooved, and the register current value of the first and second moving slotter blades 813 and 823 Is the size of the box depth of the cardboard sheet to be grooved.

  On the other hand, in the double slotter mode, as described above, in the first slotter unit 81, the lower flap portion of the cardboard sheet SH is grooved by the first moving slotter blade 813, and in the second slotter unit 82, The upper flap portion of the corrugated cardboard sheet SH is grooved by the second fixed slotter blade 822. In this case, the register current value of the second fixed slotter blade 822 of the second slotter unit 82 is the size of the upper flap of the corrugated cardboard sheet to be grooved, as in the case of performing the single slotter mode. This is because, even in the double slotter mode, the second fixed slotter blade 822 of the second slotter unit 82 cuts the upper flap portion of the cardboard sheet SH in the same manner as in the single slotter mode.

  In contrast, it is considered that the register current value of the first fixed slotter blade 812 of the first slotter unit 81 is set as follows. In the double slotter mode, unlike the single slotter mode, one cardboard sheet SH is grooved by both the first and second slotter units 81 and 82. Therefore, in the double slotter mode, the downstream edge (front end) of the corrugated cardboard sheet SH, which is the reference in the register current value of the second fixed slotter blade 822, is also the reference in the register current value of the first fixed slotter blade 812. Become. Further, in normal production to which the double slotter mode is applied, the continuous front and rear corrugated cardboard sheets SH are fed while being separated by a distance equal to the circumferential length of the upper slotter. Therefore, in order to set the register current value of the first fixed slotter blade 812 with respect to the reference of the second fixed slotter blade 822 (that is, the front end of the cardboard sheet SH that has reached the second slotter unit 82), the first upper slotter 810 The process of subtracting the circumference of (the same applies to the second upper slotter 820) by a length equal to two is applied to the register current value of the first fixed slotter blade 812. In the double slotter mode, the first slotter unit 81 cuts the front end of the lower flap portion of the corrugated cardboard sheet SH with the square blade 813a of the first moving slotter blade 813. The first fixed slotter blade 812 is brought into contact with the side opposite to the rotation direction of the slotter 810. In this case, when viewed with a slotter blade in which the first fixed slotter blade 812 and the first moving slotter blade 813 are brought into contact with each other, the square blade 812a of the first fixed slotter blade 812 is the same as the first moving slotter blade 813. It is located at the end opposite to the square blade 813a. Therefore, the square blade 812a of the first fixed slotter blade 812 is positioned away from the square blade 813a of the first moving slotter blade 813 by the total blade length.

  From the above, the register current value of the first fixed slotter blade 812 is the total blade of the upper flap portion of the corrugated cardboard sheet SH, the box depth of the corrugated cardboard sheet SH, and the first fixed slotter blade 812 and the first moving slotter blade 813. This is a value obtained by subtracting the length obtained by dividing the circumference of the first upper slotter 810 into two equal parts from the value obtained by adding the length. However, in the process of obtaining the register current value in this way, the total blade length and the length obtained by dividing the circumferential length into two halves are applied. Therefore, the register current value of the first fixed slotter blade 812 is the machining dimension of the corrugated cardboard sheet SH. It will be a departure from.

  Here, in order to make it easy for the operator to make various adjustments related to the slotter device, the register current values of the first fixed slotter blade 812 of the first slotter unit 81 and the first fixed slotter blade 822 of the second slotter unit 82 respectively. Can be displayed on a predetermined display device. In the single slotter mode, the register current value of both the first fixed slotter blade 812 and the second fixed slotter blade 822 is a value corresponding to the processing size of the cardboard sheet. And the processing dimensions of the corrugated cardboard sheet can be easily understood. Even in the double slotter mode, the register current value of the second fixed slotter blade 822 of the second slotter unit 82 becomes a value corresponding to the processing size of the cardboard sheet. And the processing dimensions of the corrugated cardboard sheet can be easily understood. However, in the double slotter mode, as described above, the register current value of the first fixed slotter blade 812 of the first slotter unit 81 is deviated from the machining dimension of the cardboard sheet, so this register current value is displayed as it is. If it does, it will become difficult for an operator to understand the relationship between the displayed value and the processing dimension of a corrugated cardboard sheet.

  Therefore, the present invention relates to a slotter device that has two slotter units and can switch between two production modes, and can display a value that can be easily understood by an operator as a slotter blade positioning parameter. An object is to provide a sheet box making machine.

In order to achieve the above object, the present invention is a corrugated sheet box making machine having a slotter device for grooving a corrugated cardboard sheet, the slotter device being a rotating cylinder connected to a rotating shaft and rotating. A first slotter, a first fixed slotter blade fixed on the outer periphery of the first slotter, and having a square blade at an end on the opposite side to the rotation direction when the corrugated sheet is processed by the first slotter; A first slotter unit that includes a first moving slotter blade that is provided so as to be movable in the circumferential direction on the outer periphery of the slotter and has a square blade at an end portion on the rotational direction side when the corrugated cardboard sheet of the first slotter is processed; A second slotter, which is a rotating cylinder connected to the rotating shaft, is fixed on the outer periphery of the second slotter, and is used when processing the corrugated cardboard sheet of the second slotter. A second fixed slotter blade having a square blade at the end opposite to the rotational direction, and a rotational direction provided on the outer periphery of the second slotter so as to be movable in the circumferential direction. A second moving slotter blade having a square blade at the end on the side, and a second slotter unit provided downstream of the first slotter unit in the cardboard sheet conveying direction. The sheet box making machine further separates the first fixed slotter blade and the first moving slotter blade by a predetermined distance on the outer periphery of the first slotter, and the second fixed slotter blade and the second moving slotter blade are In a state where the two slotters are separated by a predetermined distance, two cardboard sheets are fed while the first and second slotters make one rotation, and the two cardboard sheets are fed. A first production mode in which grooving processing is performed on each of the first and second slotter units, and a first fixed slotter blade and a first moving slotter blade are brought into contact with each other on the outer periphery of the first slotter, In addition, in a state where the second fixed slotter blade and the second moving slotter blade are in contact with each other on the outer periphery of the second slotter, one cardboard sheet is fed while the first and second slotters make one rotation. A control device configured to switch between a second production mode in which grooving processing for one cardboard sheet is performed by both the first and second slotter units, and based on control by the control device A display device for displaying predetermined information, and the control device includes a first slot for grooving the cardboard sheet by the first slotter unit. Positioning control of the first fixed slotter blade using the first positioning parameter indicating the relative position at which the square blade of the first fixed slotter blade of the rotator unit should be disposed with respect to the downstream edge of the corrugated cardboard sheet. And the square blade of the second fixed slotter blade of the second slotter unit should be disposed with respect to the downstream edge of the cardboard sheet. When performing the second production mode by performing the positioning control of the second fixed slotter blade using the second positioning parameter indicating the relative position, the second positioning parameter is set to a value corresponding to the parameter. While displaying on the display device as it is, for the first positioning parameter, the value corresponding to the parameter should be grooved It was corrected to a value corresponding to the size of the ball seat, and displays the corrected value to the display device, characterized in that.
According to the present invention configured as described above, in the second production mode, both the first and second positioning parameters are displayed according to the processing dimensions of the cardboard sheet. By understanding the relationship between the displayed value and the processing size of the corrugated cardboard sheet, various adjustments relating to the slotter device can be easily performed.

In the present invention, it is preferable that the control device corrects the first positioning parameter based on the total blade length along the circumferential direction of the first fixed slotter blade and the first moving slotter blade.
According to the present invention configured as described above, it is possible to appropriately correct the value corresponding to the first positioning parameter to be displayed based on the total blade length of the first fixed slotter blade and the first moving slotter blade. it can.

In the present invention, preferably, the control device acquires and stores the total blade length when switching from the first production mode to the second production mode, and performs the first positioning based on the stored total blade length. Correct the parameters.
According to the present invention configured as described above, the first positioning parameter based on the total blade length can be automatically corrected.

In the present invention, preferably, the control device sets the diameter of the first slotter to “D”, the cutter length of the first fixed slotter blade to “f”, and the cutter length of the first moving slotter blade to “g”. Then, the first positioning parameter is corrected by adding “D × π / 2− (f + g)” to the value corresponding to the first positioning parameter.
According to the present invention configured as described above, the first positioning parameter can be easily corrected using the arithmetic expression.

In the present invention, preferably, the control device sets a value corresponding to the first positioning parameter when the length of the upper flap and the box depth of the corrugated cardboard sheet to be grooved are “a” and “b”, respectively. A value “a + b” is displayed on the display device as the corrected value.
According to the present invention configured as described above, the operator can surely understand the relationship between the display value related to the first positioning parameter and the processing size of the cardboard sheet.

In the present invention, preferably, the control device sets a value corresponding to the first positioning parameter when the length of the upper flap and the box depth of the corrugated cardboard sheet to be grooved are “a” and “b”, respectively. The value “b” is displayed on the display device as the corrected value.
According to the present invention configured as described above, the operator can surely understand the relationship between the display value related to the first positioning parameter and the processing size of the corrugated board sheet.

In the present invention, it is preferable that the control device further includes a third positioning indicating a relative position at which the square blade of the first moving slotter blade in the first slotter unit should be disposed with respect to the square blade of the first fixed slotter blade. Relative to which the square blade of the second moving slotter blade in the second slotter unit should be positioned with respect to the square blade of the second fixed slotter blade Position control of the second moving slotter blade is performed using the fourth positioning parameter indicating the position.
According to the present invention configured as described above, the positioning control of the first and second moving slotter blades can be appropriately performed based on the third and fourth positioning parameters.

In another aspect, the present invention is a corrugated sheet box making machine having a slotter device for grooving a corrugated cardboard sheet, the slotter device being a first cylinder that is connected to a rotating shaft and rotates. A first fixed slotter blade fixed on the outer periphery of the first slotter and having a square blade at the end opposite to the rotational direction when the corrugated cardboard sheet of the first slotter is processed, and on the outer periphery of the first slotter The first slotter unit includes a first moving slotter blade that is provided so as to be movable in the circumferential direction and includes a square blade at an end on the rotation direction side when the corrugated cardboard sheet of the first slotter is machined, A second slotter, which is a rotating cylinder that is connected and rotated, and a rotation direction that is fixed on the outer periphery of the second slotter and the second slotter is processed when corrugated sheet is processed. A second fixed slotter blade having a square blade at the end on the opposite direction side, and an end on the rotation direction side of the second slotter when processing the corrugated cardboard sheet on the outer periphery of the second slotter. And a second slotter unit provided on the downstream side of the first slotter unit in the cardboard sheet conveyance direction, and a corrugated cardboard box making machine Further, the first fixed slotter blade and the first moving slotter blade are separated by a predetermined distance on the outer periphery of the first slotter, and the second fixed slotter blade and the second moving slotter blade are separated from the outer periphery of the second slotter. Two cardboard sheets are fed while the first and second slotters make one rotation in a state where they are separated from each other by a predetermined distance, and the two cardboard sheets A first production mode in which cutting is performed by each of the first and second slotter units, the first fixed slotter blade and the first moving slotter blade are brought into contact with each other on the outer periphery of the first slotter; and In a state where the two fixed slotter blades and the second moving slotter blade are in contact with each other on the outer periphery of the second slotter, one cardboard sheet is fed while the first and second slotters make one rotation. A control device configured to switch between a second production mode in which grooving processing for a corrugated cardboard sheet is performed by both the first and second slotter units, and the control device includes a first slotter In order to groov the corrugated cardboard sheet by the unit, the square blade of the first fixed slotter blade of the first slotter unit is opposed to the downstream edge of the corrugated cardboard sheet. In order to perform the positioning control of the first fixed slotter blade using the first positioning parameter indicating the relative position to be arranged, and to groov the corrugated cardboard sheet by the second slotter unit, the second Positioning control of the second fixed slotter blade using the second positioning parameter indicating the relative position at which the square blade of the second fixed slotter blade of the slotter unit should be disposed with respect to the downstream edge of the corrugated cardboard sheet. When the second production mode is performed, the value for the second positioning parameter is directly used according to the size of the corrugated cardboard sheet to be grooved, while the first positioning parameter is used for grooving. A value obtained by correcting a value corresponding to the size of the corrugated cardboard sheet to be processed is used.
According to the present invention configured as described above, positioning control of each slotter blade can be appropriately performed in the second production mode.

  According to the corrugated board box making machine of the present invention, a slotter device having two slotter units and capable of switching between two production modes has a value that can be easily understood by an operator as a slotter blade positioning parameter. Can be displayed.

It is a front view showing the whole cardboard sheet box making machine composition by the embodiment of the present invention. It is a front view which expands and shows the detailed structure of the 1st and 2nd slotter unit of the slotter apparatus by embodiment of this invention. It is a side view which shows a part of 2nd slotter unit of the slotter apparatus by embodiment of this invention in cross section. It is a block diagram which shows the electric constitution of the control apparatus by embodiment of this invention. It is a top view of the corrugated cardboard sheet after grooving. FIG. 3 shows a detailed state diagram of first and second slotter units in a single slotter mode according to an embodiment of the present invention. It is a table | surface which shows the register present value applied to each slotter blade in single slotter mode in embodiment of this invention. 4 shows an example of a display screen in a single slotter mode according to an embodiment of the present invention. FIG. 3 shows a detailed state diagram of first and second slotter units in a double slotter mode according to an embodiment of the present invention. It is a table | surface which shows the register present value applied to each slotter blade in double slotter mode in embodiment of this invention. 6 shows an example of a display screen in a double slotter mode according to an embodiment of the present invention. It is explanatory drawing about the method of calculating | requiring the total blade length by embodiment of this invention. It is a flowchart which shows switching control from the single slotter mode to the double slotter mode by embodiment of this invention. It is a flowchart which shows the slotter blade contact | abutting control by embodiment of this invention. It is a flowchart which shows the positioning control for the next order by embodiment of this invention. It is a flowchart which shows switching control from the double slotter mode to the single slotter mode by embodiment of this invention. It is a flowchart which shows the cutter length acquisition control which concerns on the 1st example by embodiment of this invention. It is a flowchart which shows the cutter length acquisition control which concerns on the 2nd example by embodiment of this invention. It is explanatory drawing about two production modes in the slotter apparatus which has a 1st and 2nd slotter unit.

  Hereinafter, a corrugated cardboard box making machine according to an embodiment of the present invention will be described with reference to the accompanying drawings.

<Corrugated cardboard box making machine>
First, an overall configuration of a corrugated board box making machine 1 according to an embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is a front view showing an overall configuration of a corrugated board box making machine 1 according to an embodiment of the present invention. The corrugated cardboard box making machine 1 includes corrugated cardboard sheets SH stacked in the vertical direction in order from the upstream side in the transport path PL of the corrugated cardboard sheet SH (the transport direction of the corrugated cardboard sheet SH is a direction from right to left in FIG. 1). A sheet feeding device 2 that feeds the corrugated cardboard sheet one by one, a printing device 4 that performs printing on the corrugated cardboard sheet SH, a crease device 5 that applies ruled lines to the corrugated cardboard sheet SH, and a slotting process (slot A slotter device 6 that performs (groove processing) and a die cutter device 7 that punches the corrugated cardboard sheet SH.

  The sheet feeding device 2 includes a table 20, a front gate 21, and a back guide 22, and a large number of cardboard sheets SH are stacked on the table 20 between the front gate 21 and the back guide 22. In addition, the sheet feeding device 2 includes a large number of sheet feeding rollers, a grade that can be moved up and down, and a pair of feed rolls 23A and 23B. When the great is lowered from a large number of paper feeding rollers, the large number of paper feeding rollers contact the lowermost corrugated paper sheet SH among the many corrugated cardboard sheets SH, thereby feeding the corrugated paper sheets SH one by one. Send to rolls 23A and 23B. The feed rolls 23A and 23B are driven by the main drive motor 8.

  The printing apparatus 4 includes a printing cylinder 40 called a plate cylinder, a press roll 43 disposed at a position facing the printing cylinder 40 across the conveyance path PL, a printing plate member for printing on the cardboard sheet SH, An ink application device for supplying ink to the printing plate member. The printing cylinder 40 and the press roll 43 are driven by the main drive motor 8.

  The creaser device 5 has an upper ruled line roll 50 and a lower ruled line roll 51 across the transport path PL. The upper and lower ruled line rolls 50 and 51 apply ruled lines to desired positions on the conveyed cardboard sheet SH. The upper and lower ruled line rolls 50 and 51 are driven by the main drive motor 8.

  The slotter device 6 has two slotter units 61 and 62. Each of the slotter units 61 and 62 includes an upper slotter to which two slotter blades are attached and a lower slotter in which a groove that can be fitted to the slotter blade is formed with the conveyance path PL interposed therebetween. These upper and lower slotters perform grooving processing at a desired position of the conveyed cardboard sheet SH. The upper and lower slotters are driven by the main drive motor 8.

  The die cutter device 7 includes a die cylinder 70 and an anvil cylinder 71 with the conveyance path PL interposed therebetween. A pair of punching dies 73 and 74 for punching the corrugated cardboard sheet SH are attached to a plate-like body such as a plywood veneer, and the plate-like body is wound around the outer peripheral surface of the die cylinder 70 in a positional relationship in which both dies are point-symmetric. Be dressed. Each of the punching dies 73 and 74 performs punching processing at a desired position of the corrugated cardboard sheet SH that is continuously conveyed. The die cylinder 70 and the anvil cylinder 71 are driven by the main drive motor 8.

<Slotter device>
Next, with reference to FIG.2 and FIG.3, the specific structure of the slotter apparatus 6 by embodiment of this invention is demonstrated. FIG. 2 is an enlarged front view showing a detailed configuration of the first and second slotter units 61 and 62 of the slotter device 6 according to the embodiment of the present invention, and FIG. 3 is a slotter device according to the embodiment of the present invention. 6 is a side view showing a part of a second slotter unit 62 of FIG.

(Configuration of slotter device)
In FIG. 2, the slotter device 6 includes a first slotter unit 61 disposed on the upstream side and a second slotter unit 62 disposed on the downstream side along the transport path PL. The first slotter unit 61 includes, for example, a slotter set for grooving composed of an upper first slotter 610 and a lower first slotter 611 disposed across the transport path PL in a direction orthogonal to the transport path PL. For example, one set of known slotter sets for forming a joint is provided in the orthogonal direction. Both slotters 610 and 611 are connected to the main drive motor 8 through a known power transmission mechanism, and rotate in the direction of the arrow shown in FIG. 2 by the rotation of the main drive motor 8. In addition, the second slotter unit 62 has a slotter set for grooving composed of the upper second slotter 620 and the lower second slotter 621 disposed across the transport path PL in a direction orthogonal to the transport path PL ( For example, three sets are provided in the front-rear direction in FIG. 3, and one known slotter set for forming a joint is provided in the orthogonal direction. Both slotters 620 and 621 are connected to the main drive motor 8 via a known power transmission mechanism, and rotate in the direction of the arrow shown in FIG. 2 by the rotation of the main drive motor 8.

  The upper first slotter 610 is fixed on the outer periphery of the first upper slotter 610, and includes a first fixed slotter blade 612 having a square blade 612a1 at the end opposite to the rotation direction, and the first upper slotter 610. A first moving slotter blade 613 provided on the outer periphery so as to be movable in the circumferential direction and having a square blade 613a1 at an end portion on the rotational direction side. The lower first slotter 611 is rotatably supported by the frame of the slotter device 6, and the first slotter blade 614 is formed in the entire outer peripheral portion. The upper first slotter 610 is rotatably supported by the frame of the slotter device 6 via the first slotter shaft 615. The upper second slotter 620 is fixed on the outer periphery of the second upper slotter 620, and has a second fixed slotter blade 622 having a square blade 622a1 at the end opposite to the rotational direction, and the second upper slotter. And a second moving slotter blade 623 provided with a square blade 623a1 at an end on the rotation direction side so as to be movable in the circumferential direction on the outer periphery of 620. The lower second slotter 621 is rotatably supported by the frame of the slotter device 6 and the second slotter blade 624 is formed in the entire outer peripheral portion. The upper second slotter 620 is rotatably supported by the frame of the slotter device 6 via the second slotter shaft 625.

  Position sensors 671 and 672 are provided between the first slotter unit 61 and the second slotter unit 62. The position sensors 671 and 672 are arranged alternately in the vertical direction, and are fixed to the frame of the slotter device 6. The position sensor 671 is configured to detect the first fixed slotter blade 612 and the first moving slotter blade 613, and the position sensor 672 is configured to detect the second fixed slotter blade 622 and the second moving slotter blade 623. Yes. Specifically, the position sensor 671 is turned on when the first fixed slotter blade 612 or the first moving slotter blade 613 is positioned in the vicinity of the position sensor 671, and the position sensor 672 is turned on by the second fixed slotter blade 622 or Turns on when the second moving slotter blade 623 is positioned in the vicinity of the position sensor 672. For example, proximity sensors that can detect metal are applied to the position sensors 671 and 672.

  Hereinafter, the fixed slotter blade may be simply referred to as “fixed blade”, and the moving slotter blade may be simply referred to as “moving blade”. Further, when the first fixed blade 612 and the second fixed blade 622 are used without being distinguished from each other, they may be simply referred to as “fixed blade”, and the first movable blade 613 and the second movable blade 623 are not distinguished from each other. May be simply referred to as “moving blade”. In addition, when the fixed blade and the moving blade are used without being distinguished from each other, they may be simply referred to as “slotter blades”.

(Slotter unit configuration)
Since the first and second slotter units 61 and 62 have the same configuration, the second slotter unit 62 will be described as an example with reference to FIG. FIG. 3 includes a cross-sectional view of the upper second slotter 620 of the second slotter unit 62 as viewed along line AA in FIG. In FIG. 3, the second slotter shaft 625 includes a spline shaft, and is rotatably supported by the frame 626 of the slotter device 6 via a bearing. The second slotter shaft 625 is connected to the main drive motor 8 via a differential positioning mechanism 650B. Generally, the differential positioning mechanism includes a differential device such as a harmonic drive (registered trademark) and a differential adjustment motor. Harmonic Drive (registered trademark) includes a wave generator, a flex spline, and a circular spline. In the present embodiment, the second slotter shaft 625 is connected to the flexspline, and the transmission member for transmitting power from the main drive motor 8 is connected to the circular spline. A known differential adjustment motor consisting of a servo motor is connected to the wave generator. When the differential adjustment motor is rotationally driven, the rotational phase of each slotter shaft with respect to the transmission member to which power is transmitted from the main drive motor 8 is adjusted.

  In the above, the differential positioning mechanism 650B applied to the second slotter unit 62 is shown, but a differential positioning mechanism having the same configuration as this is also applied to the first slotter unit 61. Hereinafter, for convenience of explanation, the reference numeral “650A” is attached to the differential positioning mechanism applied to the first slotter unit 61. The differential positioning mechanism 650A is connected to the first slotter shaft 615 and the main drive motor 8. The differential positioning mechanisms 650A and 650B correspond to the first and second phase adjustment mechanisms, respectively.

  The upper second slotter 620 includes a slotter holder 627, a rotation gear 628 having a gear formed on the outer peripheral portion, and a rotation ring 629, together with the second fixed blade 622 and the second moving blade 623. The slotter holder 627 is supported by the slotter shaft 625 so as to be slidable in the axial direction so that the positions of the grooving performed at the front end portion and the rear end portion of the cardboard sheet SH are changed. The rotation gear 628 and the rotation ring 629 are rotatably supported by a slotter holder 627 and are connected so as to rotate integrally with each other. The second movable blade 623 is fixed to the rotating ring 629, and the second fixed blade 622 is directly fixed to the slotter holder 627.

  The lower second slotter 621 is supported by the spline shaft so as to slide in the front-rear direction shown in FIG. 3 as the upper second slotter 620 slides on the slotter shaft 625 via the slotter holder 627. The lower second slotter 621 has a fitting groove 630 at the center in the front-rear direction. The fitting groove 630 is provided over the entire circumferential direction of the lower second slotter 621 and is formed so that the tip ends of the second fixed blade 622 and the second movable blade 623 are fitted.

(Moving blade movement adjustment mechanism)
In the present embodiment, in order to adjust the rotational phase of the second moving blade 623 with respect to the second fixed blade 622, the moving blade movement adjusting mechanism 660B shown in FIG. The moving blade movement adjustment mechanism 660B includes an adjustment shaft 641 extending in parallel with the slotter shaft 625, a transmission gear 642, a phase adjustment motor 643, and a differential device 644. The adjustment shaft 641 is a spline shaft, is rotatably supported by a frame 626 of the slotter device 6 via a bearing, and is connected to a phase adjustment motor 643 via a differential device 644 such as a known harmonic drive (registered trademark). Is done. Specifically, a transmission shaft to which power is transmitted from the phase adjustment motor 643 is connected to a wave generator of a harmonic drive (registered trademark), and the adjustment shaft 641 is connected to a flex spline of the harmonic drive (registered trademark). A transmission member to which power is transmitted from the main drive motor 8 is connected to a circular spline of Harmonic Drive (registered trademark). The transmission gear 642 is supported by the adjustment shaft 641 so as to slide along the adjustment shaft 641 as the upper second slotter 620 slides on the slotter shaft 625 via the slotter holder 627. The transmission gear 642 meshes with the rotation gear 628 and transmits the rotation of the adjustment shaft 641 to the rotation gear 628. When the phase adjustment motor 643 is rotationally driven while the main drive motor 8 is stopped, the rotation is decelerated by a harmonic drive (registered trademark) which is a differential device 644, and the transmission gear 642 and the rotation gear 628 are rotated. The second moving blade 623 moves along the outer peripheral surface of the slotter holder 627 through the rotation ring 629. Thereby, the rotational phase of the second movable blade 623 relative to the second fixed blade 622 is adjusted. On the other hand, when the main drive motor 8 is driven to rotate and the slotter shaft 625 rotates while the phase adjustment motor 643 is braked and stopped, the rotation of the main drive motor 8 is adjusted via the differential device 644. 641. By rotating the adjustment shaft 641, the second movable blade 623 can rotate together with the slotter holder 627 while maintaining a certain positional relationship with the second fixed blade 622.

  In the above description, the moving blade movement adjusting mechanism 660B applied to the second slotter unit 62 is shown. However, the moving blade movement adjusting mechanism having the same configuration as this is also applied to the first slotter unit 61. Hereinafter, for the convenience of explanation, the moving blade movement adjustment mechanism applied to the first slotter unit 61 is denoted by reference numeral “660A”. Note that the moving blade movement adjustment mechanisms 660A and 660B correspond to first and second movement adjustment mechanisms, respectively.

<Control device>
Next, with reference to FIG. 4, the control apparatus 100 by embodiment of this invention is demonstrated. FIG. 4 is a block diagram showing an electrical configuration of the control device 100 according to the embodiment of the present invention. 4 mainly shows a control configuration for the slotter device 6 by the control device 100, the control device 100 is not limited to the slotter device 6, but includes various components (paper feeding device) of the corrugated cardboard box making machine 1. 2, the printing device 4, the cleaner device 5, and the die cutter device 7).

  Basically, the control device 100 controls the main drive motor 8 so that the upper first and second slotters 610 and 620 and the lower first and second lower portions of the first and second slotter units 61 and 62, respectively. The slotters 611 and 621 are rotated. Further, the control device 100 controls the differential adjustment motors in the differential positioning mechanisms 650A and 650B, whereby the first and second slotter shafts 615 and 625 of the first and second slotter units 61 and 62 are controlled. Adjust the rotation phase. By doing so, the rotational phases of the first and second fixed blades 612 and 622 fixed to the upper first and second slotters 610 and 620 are adjusted. That is, the control device 100 controls the positioning of the first and second fixed blades 612 and 622 by controlling the differential adjustment motors in the differential positioning mechanisms 650A and 650B.

  Further, the control device 100 controls the phase adjustment motor 643 in the moving blade movement adjustment mechanisms 660A and 660B, thereby adjusting the rotation phases of the adjustment shafts 641 of the first and second slotter units 61 and 62, respectively. In this way, the rotational phase of the first moving blade 613 relative to the first fixed blade 612 is adjusted for the first slotter unit 61, and the second moving blade 623 relative to the second fixed blade 622 is adjusted for the second slotter unit 62. Adjust the rotation phase. That is, the control device 100 controls the positioning of the first and second movable blades 613 and 623 by controlling the phase adjustment motor 643 in the movable blade movement adjusting mechanisms 660A and 660B.

  Further, as shown in FIG. 4, the control device 100 receives signals from an operation panel 110 operated by an operator (operator), and from position sensors 671 and 672 (see FIG. 2) in the slotter device 6. A signal (detection signal) is input. The control device 100 performs the positioning control as described above based on the signal input in this way. The control device 100 also performs control to display predetermined information on the display device 120. An example of information displayed on the display device 120 will be described later.

<Single slotter mode>
Next, in the embodiment of the present invention, a single slotter mode (hereinafter sometimes referred to as “SSL mode”) implemented by the slotter device 6 for 2-up production will be specifically described.

  First, prior to the description of the single slotter mode, basic items of grooving by the slotter device 6 will be described with reference to FIG. FIG. 5 is a plan view of the corrugated cardboard sheet SH after grooving. The grooving process described here is applied not only in the single slotter mode but also in the double slotter mode.

  In FIG. 5, portions (three locations) indicated by reference sign LS <b> 1 are locations in the upper flap portion FL <b> 1 of the corrugated board sheet SH where the slotter device 6 performs grooving. Further, the portions (three locations) indicated by reference sign LS2 are locations in the lower flap portion FL2 of the corrugated cardboard sheet SH where the slotter device 6 performs grooving. In the following, as shown in FIG. 5, the length of the upper flap portion FL1 is expressed as “a”, the length of the lower flap portion FL2 is expressed as “c”, and the upper flap portion FL1 and the lower flap portion FL2 The length of the portion between the two, that is, the box depth is expressed as “b”.

  Next, the single slotter mode according to the embodiment of the present invention will be described in detail with reference to FIG. FIG. 6 shows a detailed state diagram of the first and second slotter units 61 and 62 of the slotter device 6 in the single slotter mode. Specifically, FIG. 6 is an enlarged front view showing the main components (particularly fixed blades and moving blades) of the first and second slotter units 61 and 62.

  In the example shown in FIG. 6, with respect to the first slotter unit 61, the first fixed blade 612 includes a square blade 612a having a square blade 612a1 provided at an end thereof, and two joint blades connected to the square blade 612a. 612b, and the first movable blade 613 includes a square blade 613a having a square blade 613a1 provided at an end thereof, and two joint blades 613b connected to the square blade 613a. In the first fixed blade 612, since the angled blade 612a is provided on the opposite side to the rotation direction of the upper first slotter 610, the square blade 612a1 is positioned at the end opposite to the rotation direction. Moreover, in the 1st moving blade 613, since the angled blade 613a is provided in the rotation direction side of the upper 1st slotter 610, the square blade 613a1 will be located in the edge part of the rotation direction side. Similarly, in the second slotter unit 62, the second fixed blade 622 has a square blade 622a having a square blade 622a1 provided at an end thereof, and two joint blades 622b connected to the square blade 622a. The second movable blade 623 includes a square blade 623a having a square blade 623a1 provided at an end thereof, and two joint blades 623b connected to the square blade 623a. In the second fixed blade 622, since the angled blade 622a is provided on the opposite side to the rotation direction of the upper second slotter 620, the square blade 622a1 is positioned at the end on the opposite side to the rotation direction. Further, in the second movable blade 623, the angled blade 623a is provided on the rotational direction side of the upper second slotter 620, and the square blade 623a1 is positioned at the end portion on the rotational direction side.

  In the single slotter mode, in the first slotter unit 61, the first fixed blade 612 and the first movable blade 613 are arranged on the outer periphery of the first upper slotter 610 at a predetermined distance, and the second slotter unit. In 62, the second fixed blade 622 and the second movable blade 623 are arranged on the outer periphery of the second upper slotter 620 by a predetermined distance. In the state where the slotter blades are arranged in this way, the two cardboard sheets SH1 and SH2 are fed while the first and second upper slotters 610 and 620 make one rotation, and the grooves for the two cardboard sheets SH1 and SH2 are fed. Cutting is performed by the first and second slotter units 61 and 62, respectively. Specifically, in the single slotter mode, the upper flap portion LS12 of the cardboard sheet SH2 on the upstream side in the transport direction FD is grooved by the first fixed blade 612 of the first slotter unit 61, and the first slotter unit 61 The lower flap portion LS22 of the corrugated cardboard sheet SH2 is grooved by the first moving blade 613. Further, the upper flap portion LS11 of the corrugated cardboard sheet SH1 on the downstream side in the transport direction FD is grooved by the second fixed blade 622 of the second slotter unit 62, and the second moving blade 623 of the second slotter unit 62 The lower flap portion LS21 in the cardboard sheet SH1 is grooved.

  In the present embodiment, in order to appropriately realize such grooving processing in the single slotter mode, the control device 100 uses the first and second fixed blades 612 and 622 and the first and second movable blades 613 and 623. A register current value is set for each, and each blade is positioned and controlled. Here, the register current value applied to the fixed blade is such that the square blade of the fixed blade is arranged with respect to the front end of the corrugated cardboard sheet with reference to the position of the downstream edge (front end) of the corrugated cardboard sheet to be processed. This is a parameter (first and second positioning parameters) indicating a relative position to be obtained. On the other hand, the register current value applied to the moving blade is relative to the position of the square blade of the fixed blade relative to the position of the square blade of the fixed blade. (Corresponding to the circumferential length along the outer periphery) (parameters for third and fourth positioning). These register current value definitions apply not only to the single slotter mode but also to the double slotter mode.

  Next, referring to FIG. 7 in addition to FIG. 6, the register current value applied in the single slotter mode in the embodiment of the present invention will be specifically described. FIG. 7 is a table showing register current values applied to each slotter blade in the single slotter mode in the embodiment of the present invention.

  As described above, in the single slotter mode, in both the first and second slotter units 61 and 62, the upper flap portions LS11 and LS12 in the cardboard sheets SH1 and SH2 are grooved by the first and second fixed blades 612 and 622. The lower flap portions LS21 and LS22 of the corrugated cardboard sheets SH1 and SH2 are cut by the first and second movable blades 613 and 623 (see FIG. 6). In this case, the square blades 612a1, 622a1 of the first and second fixed blades 612, 622 are upstream ends of the upper flap portions LS11, LS12 (in other words, the rear ends of the portions that perform grooving on the upper flap portions LS11, LS12). In addition, the square blades 613a1 and 623a1 of the first and second movable blades 613 and 623 perform grooving on the downstream end of the lower flap portions LS21 and LS22 (in other words, the lower flap portions LS21 and LS22). To match the front edge of the part. That is, the upper first and second slotters 610 and 620 rotate, and the corrugated cardboard sheets SH1 and SH2 move along the transport direction FD, but the square blades 612a1 and 622a1 of the rotating first and second fixed blades 612 and 622 rotate. The first and second movable blades 613 rotate such that the square blades 612a1 and 622a1 come into contact with the rear ends of the upper flap portions LS11 and LS12 when reaching the corrugated cardboard sheets SH1 and SH2 that have been conveyed. When the square blades 613a1, 623a1 at 623 reach the corrugated cardboard sheets SH1, SH2, the square blades 613a1, 623a1 are brought into contact with the front ends of the lower flap portions LS12, LS12.

  In order to realize such a relative positional relationship between each slotter blade and the cardboard sheet, a register current value as shown in FIG. 7 is applied. Specifically, when the control device 100 performs the single slotter mode, the register current values of the first and second fixed blades 612 and 622 are the dimensions of the upper flap portions LS11 and LS12 in the cardboard sheets SH1 and SH2. a ”. In addition, the control device 100 sets the register current values of the first and second movable blades 613 and 623 to “b” that is a box depth dimension in the corrugated cardboard sheets SH1 and SH2.

  And the control apparatus 100 performs positioning control of each slotter blade based on the register present value set as shown in FIG. Specifically, the control device 100 controls the differential adjustment motors of the differential positioning mechanisms 650A and 650B by setting the numerical value of the dimension a of the upper flap portions LS11 and LS12 in the cardboard sheets SH1 and SH2 to the register current value. Thus, the positioning control of each of the first and second fixed blades 612 and 622 is performed. In addition, the control device 100 sets the numerical value of the box depth dimension b in the cardboard sheets SH1 and SH2 to the register current value, and controls the phase adjustment motor 643 of the moving blade movement adjustment mechanisms 660A and 660B. Positioning control of each of the first and second movable blades 613 and 623 is performed.

  Next, a display screen in the single slotter mode according to the embodiment of the present invention will be described with reference to FIG. FIG. 8 shows an example of a screen displayed on the display device 120 under the control of the control device 100 in the single slotter mode. As shown in FIG. 8, according to this display screen, the corrugated cardboard sheet to be grooved by each of the first and second slotter units 61 and 62 and the position to be grooved in the corrugated cardboard sheet are It is easy to understand. In addition, the register current values of the first and second fixed blades 612 and 622 of the first and second slotter units 61 and 62 are displayed on the display screen. FIG. 8 shows an example in which the dimension “a” of the upper flap portion of the corrugated cardboard sheet is “150 mm”, and this “150 mm” is displayed as the register current value of each of the first and second fixed blades 612 and 622. . The operator confirms the register current value displayed in this way, grasps the relationship between the displayed value and the processing dimension (in other words, the box dimension) of the cardboard sheets SH1 and SH2, and variously relates to the slotter device 6. Make adjustments.

<Double slotter mode>
Next, in the embodiment of the present invention, a double slotter mode (hereinafter sometimes referred to as “WSL mode”) implemented by the slotter device 6 for normal production will be specifically described.

  FIG. 9 shows a detailed state diagram of the first and second slotter units 61 and 62 of the slotter device 6 in the double slotter mode. Specifically, FIG. 9 is an enlarged front view showing main components (particularly fixed blades and movable blades) of the first and second slotter units 61 and 62. In addition, since the structure of each slotter to apply is the same as that of what was shown in FIG. 6, those description is abbreviate | omitted.

  In the double slotter mode, in the first slotter unit 61, the first fixed blade 612 and the first movable blade 613 are arranged so as to contact each other on the outer periphery of the first upper slotter 610, and in the second slotter unit 62, The second fixed blade 622 and the second movable blade 623 are arranged to abut on the outer periphery of the second upper slotter 620. That is, in the double slotter mode, one slotter blade in which the first fixed blade 612 and the first movable blade 613 are integrated is used, and the second fixed blade 622 and the second movable blade 623 are integrated. One slotter blade is used. Specifically, the end of the first fixed blade 612 where the square blade 612a1 is not provided and the end of the first movable blade 613 where the square blade 613a1 is not provided are abutted (in other words, the first fixed blade 612 and the first movable blade 613 are integrated so that the square blades 612a1 and 613a1 are in contact with both ends of the slotter blade), and the second fixed blade 622 is not provided with the square blade 622a1. And the end of the second movable blade 623 that is not provided with the square blade 623a1 (in other words, the square blade 622a1 is attached to both ends of the slotter blade in which the second fixed blade 622 and the first movable blade 623 are integrated. , 623a1 is positioned so as to be positioned).

  In the state where the blades are arranged in this way, one corrugated sheet SH is fed while the first and second upper slotters 610 and 620 make one rotation, and grooving processing for the corrugated cardboard sheet SH is performed by the first and second slotters. Performed by both units 61 and 62. Specifically, in the double slotter mode, at least the first moving blade 613 of the first slotter unit 61 (the case may be only the first moving blade 613 or both the first moving blade 613 and the first fixed blade 612). The lower flap portion LS2 of the corrugated cardboard sheet SH is grooved, and at least the second fixed blade 622 of the second slotter unit 62 (the second fixed blade 622 may be used alone, or the second fixed blade). 622 and the second movable blade 623), the upper flap portion LS1 in the corrugated cardboard sheet SH is grooved. In the present embodiment, in order to appropriately realize the grooving process in the double slotter mode, the control device 100 uses the first and second fixed blades 612 and 622 and the first and second movable blades 613 and 623. A register current value is set for each, and each blade is positioned and controlled.

  Next, referring to FIG. 10 in addition to FIG. 9, the register current value applied in the double slotter mode in the embodiment of the present invention will be specifically described. FIG. 10 is a table showing register current values applied to each slotter blade in the double slotter mode in the embodiment of the present invention.

  As described above, in the double slotter mode, in the first slotter unit 61, the lower flap portion LS2 of the cardboard sheet SH is grooved by at least the first moving blade 613, and in the second slotter unit 62, the cardboard sheet The upper flap portion LS1 in SH is grooved by at least the second fixed blade 622 (see FIG. 9). In this case, the square blade 613a1 of the first moving blade 613 in the first slotter unit 61 is made to coincide with the downstream end of the lower flap portion LS2 (in other words, the front end of the portion that performs grooving on the lower flap portion LS2), Further, the square blade 622a1 of the second fixed blade 622 of the second slotter unit 62 is made to coincide with the upstream end of the upper flap portion LS1 (in other words, the rear end of the portion where the upper flap portion LS1 is grooved). . That is, when the upper first slotter 610 rotates and the cardboard sheet SH moves along the transport direction FD, the square blade 613a1 of the rotating first moving blade 613 reaches the transported cardboard sheet SH. The square blade 613a1 is brought into contact with the front end of the lower flap portion LS2. In addition, the upper second slotter 620 rotates and the cardboard sheet SH moves along the transport direction FD, but when the square blade 622a1 of the rotating second fixed blade 622 reaches the transported cardboard sheet SH. The square blade 622a1 is brought into contact with the rear end of the upper flap portion LS1.

In order to realize such a relative positional relationship between each slotter blade and the cardboard sheet, a register current value as shown in FIG. 10 is applied. Here, in addition to the above “a”, “b”, and “c”, the following symbols are also used.
D: Diameters of the upper first and second slotters 610 and 620 (basically coincide with the reference circumferential diameter of the printing cylinder 40)
f: Blade length of the first fixed blade 612 (specifically, the arc length of the first fixed blade 612)
g: Blade length of the first moving blade 613 (specifically, the arc length of the first moving blade 613)
d: Blade length of the second fixed blade 622 (specifically, the arc length of the second fixed blade 622)
e: Blade length of the second moving blade 623 (specifically, the arc length of the second moving blade 623)

  When performing the double slotter mode, the control device 100 first sets the register current value of the second fixed blade 622 of the second slotter unit 62 to the upper flap portion LS1 of the cardboard sheet SH in the same manner as when performing the single slotter mode. The dimension is set to “a” (see FIG. 10). This is because, even in the double slotter mode, the second fixed blade 622 of the second slotter unit 62 cuts the upper flap portion LS1 of the cardboard sheet SH in the same manner as in the single slotter mode.

In the double slotter mode, as described above, the first fixed blade 612 and the first movable blade 613 are brought into contact with each other, and the second fixed blade 622 and the second movable blade 623 are brought into contact with each other. On the other hand, the register current values of the first and second movable blades 613 and 623 are the corners of the first and second movable blades 613 and 623 from the square blades 612a1 and 622a1 of the first and second fixed blades 612 and 622, respectively. The circumferential length to the blades 613a1 and 623a1 (specifically, the circumferential length along the direction opposite to the rotation direction in the first and second upper slotters 610 and 620). Therefore, in the contact state of the slotter blade in the double slotter mode, the register current value of the first moving blade 613 is the total blade length along the circumferential direction of the first fixed blade 612 and the first moving blade 613 ( f + g), and the register current value of the second movable blade 623 is defined using the total blade length (d + e) along the circumferential direction of the second fixed blade 622 and the second movable blade 623. Will be. Specifically, the register current values of the first and second movable blades 613 and 623 are calculated from the circumferential lengths (D × π) of the first and second upper slotters 610 and 620, respectively. This is a value obtained by subtracting the blade length (f + g, d + e). Therefore, when performing the double slotter mode, the control device 100 sets the register current value of the first moving blade 613 of the first slotter unit 61 to “D × π− (f + g)”, and sets the second slotter unit 62 in the second slotter mode. The register current value of the two moving blades 623 is set to “D × π− (d + e)” (see FIG. 10).
Note that when the register current values of the first and second movable blades 613 and 623 are set in this way, the total blade length (f + g, d + e) is required, but a method for obtaining the total blade length is described below. Will be described later.

  On the other hand, the register current value of the first fixed blade 612 is set as follows. In the double slotter mode, unlike the single slotter mode, one cardboard sheet SH is grooved by both the first and second slotter units 61 and 62. For this reason, in the double slotter mode, the downstream edge (front end) of the corrugated cardboard sheet SH that is used as a reference in the register current value of the second fixed blade 622 is also used as the reference in the register current value of the first fixed blade 612. Further, in normal production to which the double slotter mode is applied, the continuous front and rear corrugated cardboard sheets SH are fed while being separated by a distance equal to the circumferential length of the upper slotter. Therefore, in order to set the register current value of the first fixed blade 612 with respect to the reference of the second fixed blade 622 (that is, the front end of the cardboard sheet SH that has reached the second slotter unit 62), the first upper slotter 610 (first The same processing is applied to the register current value of the first fixed blade 612 by subtracting only the length “D × π / 2” obtained by dividing the circumferential length of the upper two slotters 620 into two equal parts. In the double slotter mode, the first slotter unit 61 cuts the front end of the lower flap portion LS2 of the cardboard sheet SH with the square blade 613a1 of the first moving blade 613. The first fixed blade 612 is brought into contact with the side opposite to the rotation direction of 610 (see FIG. 9). In this case, when viewed with a slotter blade in which the first fixed blade 612 and the first movable blade 613 are in contact with each other, the square blade 612a1 of the first fixed blade 612 is the same as the square blade 613a1 of the first movable blade 613. Located at the opposite end. Therefore, the square blade 612a1 of the first fixed blade 612 is positioned away from the square blade 613a1 of the first movable blade 613 by the total blade length (f + g).

  From the above, the register current value of the first fixed blade 612 includes the dimension (a) of the upper flap portion LS1 of the corrugated cardboard sheet SH, the box depth (b), the first fixed blade 612, and the first movable blade 613. Is a value obtained by subtracting a length (D × π / 2) obtained by dividing the circumferential length of the first upper slotter 610 into two from the value obtained by adding the total blade length (f + g). Therefore, when performing the double slotter mode, the control device 100 sets the register current value of the first fixed blade 612 of the first slotter unit 61 to “a + b − {(D × π / 2) − (f + g)}”. (See FIG. 10).

  And the control apparatus 100 performs positioning control of each slotter blade based on the register present value set as mentioned above. Specifically, in the double slotter mode, the control device 100 first moves the first and second movable blades 613 and 623 by controlling the phase adjustment motor 643 of the movable blade movement adjustment mechanisms 660A and 660B. Then, the first and second fixed blades 612 and 622 are brought into contact with each other. Then, the control device 100 sets the register current values of the first and second fixed blades 612 and 623 from the values of various parameters (see FIG. 10), and controls the differential adjustment motors of the differential positioning mechanisms 650A and 650B. Thus, positioning control of the first fixed blade 612 and the first movable blade 613 in the contact state and the second fixed blade 622 and the second movable blade 623 in the contact state is performed.

  By the way, in the double slotter mode, the register current value of the second fixed blade 622 of the second slotter unit 62 becomes “a” which is the dimension of the upper flap portion LS1 in the cardboard sheet SH, while the first slotter unit 61 The register current value of the first fixed blade 612 is “a + b − {(D × π / 2) − (f + g)}”. However, as can be seen from the expression “a + b − {(D × π / 2) − (f + g)}”, the expression includes a term “{(D × π / 2) − (f + g)}”. Therefore, the register current value of the first fixed blade 612 deviates from the processing dimension of the corrugated cardboard sheet SH. Here, the dimensions a and c of the upper flap portion and the lower flap portion are “150 mm”, the box depth b is “200 mm”, and the diameter D of the upper first and second slotters 610 and 620 is “406. An example is given in which the blade lengths f, d, g, and e of the first and second fixed blades 612 and 613 and the first and second movable blades 613 and 623 are all “224 mm”. In this case, since the register current value of the second fixed blade 613 is “150 mm”, the register current value of the first fixed blade 612 is equal to the processing size in the corrugated cardboard sheet SH. 6 mm ”, it can be seen that the distance from the processing dimension of the corrugated board sheet SH is different.

  Also in the double slotter mode, the register current values of the first and second fixed blades 622 and 622 are displayed on the display device 120 as in the single slotter mode (see FIG. 8). However, if the register current value of the first fixed blade 612 deviating from the machining dimension as described above is displayed as it is, it is difficult for the operator to understand the relationship between the displayed value and the machining dimension of the cardboard sheet SH. It becomes.

  Therefore, in the present embodiment, the control device 100 sets “a + b − {(D × π / 2) − (f + g)}”, which is the actual register current value of the first fixed blade 612, to the processing size of the corrugated cardboard sheet SH. The display device 120 displays a value corrected to a value according to the above. Specifically, control device 100 uses “(D × π / 2) − (f + g)” as a correction constant, and a value obtained from “a + b − {(D × π / 2) − (f + g)}”. A value obtained by adding the correction constant is displayed on the display device 120. As a result, the control device 100 causes the display device 120 to display the value “a + b” as the register current value of the first fixed blade 612. Since the value “a + b” is a value obtained by adding the dimension “a” of the upper flap portion of the corrugated cardboard sheet SH and the box depth “b”, the value is displayed on the display device 120 as the register current value of the first fixed blade 612. Then, the operator can easily understand the relationship between the displayed value and the processing size of the cardboard sheet SH.

  Next, a display screen in the double slotter mode according to the embodiment of the present invention will be described with reference to FIG. FIG. 11 shows an example of a screen displayed on the display device 120 under the control of the control device 100 in the double slotter mode. As shown in FIG. 11, according to this display screen, the operator easily understands the location where the first and second slotter units 61 and 62 perform the grooving process on one corrugated cardboard sheet SH. It can be done.

  Further, the register current values of the first and second fixed blades 612 and 622 of the first and second slotter units 61 and 62 are displayed on the display screen shown in FIG. Here, similarly to the above-described example, the upper flap portion and the lower flap portion have the dimensions a and c of “150 mm”, the box depth b of “200 mm”, and the upper first and second slotters 610 and 620. And the first and second fixed blades 612 and 613 and the first and second movable blades 613 and 623 have all the blade lengths f, d, g, and e of “224 mm”. Take a case as an example. In this case, “150 mm” corresponding to the value of the upper flap portion dimension “a” is displayed as the register current value of the second fixed blade 622, and the upper flap portion dimension “a” is displayed as the register current value of the first fixed blade 612. “350 mm” corresponding to the value obtained by adding the box depth b is displayed. In other words, the actual register current value of the first fixed blade 612 is “159.6 mm” from the above formula, but this value is corrected to a value corresponding to the processing size of the cardboard sheet SH, that is, by a correction constant. The corrected value “350 mm” is displayed. The operator confirms the register current value displayed in this way, grasps the relationship between the displayed value and the processing size of the cardboard sheet SH, and performs various adjustments regarding the slotter device 6.

<Mode switching control>
Next, control performed when the mode is switched between the single slotter mode and the double slotter mode in the embodiment of the present invention will be described.

(Switching control from single slotter mode to double slotter mode)
First, switching control from the single slotter mode to the double slotter mode according to the embodiment of the present invention will be described. Before describing the specific contents of the switching control, a method for obtaining the total blade length of the fixed blade and the moving blade necessary for the switching control will be described with reference to FIG.

  FIG. 12 is an explanatory diagram of a method for obtaining the total blade length according to the embodiment of the present invention. FIG. 12 is an enlarged schematic front view showing only the first upper slotter 610 of the first slotter unit 61 according to the embodiment of the present invention. In FIG. 12, the method of calculating | requiring the total cutter length is demonstrated using the 1st slotter unit 61 among the 1st and 2nd slotter units 61 and 62 as a representative. This method is similarly applied to the second slotter unit 62.

  In the present embodiment, when the control device 100 switches from the single slotter mode to the double slotter mode, it performs control for automatically obtaining the total blade length of the fixed blade and the moving blade. This is because the total blade length is required when positioning the fixed blade and the movable blade in order to perform the double slotter mode. Basically, the total blade length is not known on the control device 100 side before performing the double slotter mode, so that the control device 100 determines the total blade length when performing the double slotter mode. To.

  In particular, in the present embodiment, the control device 100 causes the moving blade to contact the fixed blade by gradually moving the moving blade that is spaced from the fixed blade. Find the total blade length with the moving blade. Specifically, as shown in FIG. 12, the control device 100 first positions the first fixed blade 612 and the first movable blade 613 at the first and second reference positions that are separated from each other. Specifically, the control device 100 assumes that the first fixed blade 612 is brought into contact with the first fixed blade 612 by moving the first movable blade 613 in a state where the position of the first fixed blade 612 is fixed. The fixed blade 612 is positioned at a first reference position (a position indicated by the register current value α) that is a position suitable for the first moving blade 613 that has moved. In addition, the control device 100 sets the first moving blade 613 to a second reference position (indicated by a register current value β) that is a position to be placed before the movement for bringing the first moving blade 613 into contact with the first fixed blade 612 is started. Position).

  These first and second reference positions are defined in a lower region of the cylinder circumference of the first upper slotter 610 (typically, a region corresponding to the lower half of the first upper slotter 610). In this way, in the process of obtaining the total blade length, foreign matters such as paper pieces and paper dust are sandwiched between the first fixed blade 612 and the first movable blade 613, and the first fixed blade 612 and the first movable blade 613 are moved. It is possible to prevent a problem in contact with the blade 613 or damage to the moving blade phase adjusting mechanism 660A. Further, the first and second reference positions are defined as positions where these blades do not interfere even when the first fixed blade 612 and / or the first movable blade 613 has a long blade length.

  Next, the control device 100 adjusts the phase as a servo motor in the moving blade movement adjustment mechanism 660A from the state where the first fixed blade 612 is positioned at the first reference position and the first moving blade 613 is positioned at the second reference position. By controlling the motor 643, the first moving blade 613 is slowly moved toward the first fixed blade 612, that is, an inching operation is performed. The control device 100 acquires the driving current of the phase adjustment motor 643 while moving the first moving blade 613 in this way, and the torque corresponding to this driving current (the phase adjusting motor 643 applies the first moving blade 613 to the first moving blade 613). Based on the applied torque), it is determined whether or not the first movable blade 613 is in contact with the first fixed blade 612. Specifically, the control device 100 determines that the first movable blade 613 is in contact with the first fixed blade 612 when the torque corresponding to the drive current of the phase adjustment motor 643 exceeds a predetermined threshold. By using such torque, it can be accurately determined that the first movable blade 613 is in contact with the first fixed blade 612. When the control device 100 determines that the first moving blade 613 is in contact with the first fixed blade 612, the control device 100 stops the moving operation of the first moving blade 613, and the first moving blade 613 at this time is stopped. The register current value γ is stored.

  Here, the total blade length “f + g” of the first fixed blade 612 and the first movable blade 613 is set to the first reference position from the entire circumference “πD” of the first upper slotter 610 as shown in FIG. The distance L between a certain first fixed blade 612 and the first movable blade 613 at the second reference position, and the distance that the first movable blade 613 has moved from the second reference position to contact with the first fixed blade 612 The length is obtained by subtracting δ. That is, the total blade length is represented by the formula “f + g = πD−L−δ”. In this case, if register current values α, β, and γ are used, L and δ become “L = β−α” and “δ = γ−β”, respectively. This is expressed by the equation “f + g = πD−α−γ”.

  Therefore, the control device 100 adds the value of the register current value α of the first fixed blade 612 and the register current value of the first moving blade 613 stored as described above to the expression “f + g = πD−α−γ”. By substituting the value of γ, the total blade length “f + g” of the first fixed blade 612 and the first movable blade 613 is obtained. And the control apparatus 100 memorize | stores the value of the calculated | required total blade length "f + g".

  In the above, the total blade length is expressed as “f + g”, but strictly speaking, the total blade length obtained by the method according to the present embodiment is the blade length f of the first fixed blade 612 alone and the first blade length f. In some cases, the length of the single movable blade 613 is not simply a sum of the blade length g of the single movable blade 613. In the entire slotter blade in which the first fixed blade 612 and the first movable blade 613 are in contact and integrated. Actual arc length. According to the present embodiment, even when there is a slight gap between the first fixed blade 612 and the first movable blade 613 in the contact state, the accurate total blade with such a gap taken into account. You can get the length. Therefore, positioning control and the like can be accurately performed in the double slotter mode.

  In addition, the control apparatus 100 calculated | required and calculated | required the total blade length "d + e" of the 2nd fixed blade 622 and the 2nd movable blade 623 also about the 2nd slotter unit 62 by the method similar to the above-mentioned method. The value of the total blade length “d + e” is stored. However, in the second slotter unit 62, the reference position applied to the second fixed blade 622 is “third reference position”, and the reference position applied to the second movable blade 622 is “fourth reference position”. Basically, the third and fourth reference positions are the same as the first and second reference positions described above. Therefore, in the following description, the first and third reference positions are not distinguished from each other, and the term “first reference position” is used in the description, and the second and fourth reference positions are not distinguished from each other. The explanation will be unified with the word “reference position”.

  Next, switching control from the single slotter mode to the double slotter mode according to the embodiment of the present invention will be specifically described with reference to FIGS. FIG. 13 is a flowchart showing switching control from the single slotter mode to the double slotter mode according to the embodiment of the present invention. FIG. 14 is a flowchart showing slotter blade contact control for contacting the movable blade and the fixed blade, which is performed during the switching control. FIG. 15 is a flowchart showing positioning control for the next order performed during this switching control. It is assumed that the production mode of the slotter device 6 is set to the single slotter mode at the start of the flow of FIG.

  As shown in FIG. 13, first, in step S101, the control device 100 starts initial mode setting for the slotter device 6, and then in step S102, the control device 100 sets the production mode to be set in the next order. , And obtains dimensional information (processed dimensions) of the corrugated cardboard sheet to be processed. For example, the control apparatus 100 acquires the production mode and dimension information input via the operation panel 110 by an operator (operator).

  Next, in step S103, the control device 100 determines whether or not the next-order production mode is the double slotter mode. As a result, if the production mode of the next order is not the double slotter mode (step S103: No), the control device 100 proceeds to step S112 and starts positioning to the next order while maintaining the single slotter mode. That is, the control device 100 sets the register current value (see FIG. 7) in the single slotter mode according to the dimension information of the cardboard sheet of the next order, and based on the set register current value, the differential positioning mechanism The fixed blade positioning control is performed by 650A and 650B, and the movable blade positioning control is performed by the movable blade movement adjustment mechanisms 660A and 660B.

  On the other hand, when the production mode of the next order is the double slotter mode (step S103: Yes), the control device 100 proceeds to step S104 and starts switching from the single slotter mode to the double slotter mode. Next, in step S105, the control device 100 performs slotter blade contact control for causing the movable blade and the fixed blade to contact each other.

  This slotter blade contact control will be described with reference to FIG. When the slotter blade contact control is started, first, in step S201, the control device 100 starts positioning the fixed blade to the first reference position for both the first and second slotter units 61 and 62. Moreover, the positioning of the movable blade to the second reference position is started. In this case, the control device 100 performs positioning control of the fixed blade by the differential positioning mechanisms 650A and 650B, and performs positioning control of the moving blade by the moving blade movement adjustment mechanisms 660A and 660B.

  Next, when the positioning of the movable blade to the second reference position is completed in step S202, the control device 100 determines whether or not the positioning of the fixed blade to the first reference position is completed in step S203. As a result, when the positioning of the fixed blade to the first reference position is completed (step S203: Yes), the control device 100 proceeds to step S204 and moves toward the fixed blade by the moving blade movement adjustment mechanisms 660A and 660B. Start the blade jogging motion. On the other hand, when the positioning of the fixed blade to the first reference position is not completed (step S203: No), the control device 100 returns to step S203 and performs the determination again.

  Next, in step S205, the control device 100 determines whether or not the torque corresponding to the drive current of the phase adjustment motor 643 in the movable blade movement adjustment mechanisms 660A and 660B has exceeded a predetermined threshold value. Here, the control device 100 determines whether or not the movable blade has contacted the fixed blade based on the torque applied to the movable blade by the phase adjustment motor 643. As a result of the determination in step S205, when the torque exceeds the threshold value (step S205: Yes), that is, when the moving blade comes into contact with the fixed blade, the control device 100 proceeds to step S206 to move the moving blade movement adjustment mechanism 660A, The moving operation of the moving blade by 660B is finished. In step S207, the control device 100 stores the register current value of the moving blade that is in contact with the fixed blade. On the other hand, when the torque does not exceed the threshold value (step S205: No), that is, when the moving blade is not in contact with the fixed blade, the control device 100 returns to step S205 and performs the determination again.

  The control device 100 performs such slotter blade contact control on both the first and second slotter units 61 and 62.

  Returning to FIG. 13, the processing after step S106 will be described. After the slotter blade contact control in step S105 described above, in step S106, the control device 100 acquires the register current values of the fixed blade and the movable blade in the contact state. The register current value of the fixed blade acquired here is a value when the fixed blade is at the first reference position, and the register current value of the moving blade is the value stored in step S207 of FIG.

  Next, in step S107, the control device 100 obtains the total blade length of the fixed blade and the moving blade based on the register current values of the fixed blade and the moving blade acquired in step S106. Specifically, the control device 100 subtracts the register current value of the fixed blade and the register current value of the moving blade from the total perimeter of the upper slotter, thereby obtaining the total blade length of the fixed blade and the moving blade. I ask for it. And the control apparatus 100 memorize | stores the total blade length calculated | required in this way. The control device 100 performs the calculation and storage of the total blade length as described above for both the first and second slotter units 61 and 62.

  Next, in step S108, the control device 100 displays the correction constant for correcting the register current value of the fixed blade, that is, the actual register current value of the fixed blade, using the total blade length obtained in step S107. Find the correction constant to be applied to find the register current value. In particular, the control device 100 corrects the register current value of the first fixed blade 612 using the total blade length (f + g) of the first fixed blade 612 and the first movable blade 613 in the first slotter unit 61. Find the correction constant. Specifically, the control device 100 determines the total blade length (f + g) of the first fixed blade 612 and the first movable blade 613 from the length (D × π / 2) obtained by dividing the entire circumference of the upper slotter into two equal parts. , That is, by calculating the expression “(D × π / 2) − (f + g)”, the correction constant is obtained. And the control apparatus 100 memorize | stores the correction | amendment constant calculated | required in this way.

  Next, in step S109, the control device 100 sets the register current of the first and second fixed blades 612 and 622 in the first and second slotter units 61 and 62 to be set to perform grooving in the next order. The value is displayed on the display device 120. Specifically, for the second fixed blade 622, the control device 100 causes the display device 120 to display the actual register current value as it is, while for the first fixed blade 612, the actual register current value is displayed in step S108. The value corrected by the correction constant obtained in the above is displayed on the display device 120 as the register current value. In this case, the control device 100 displays a value obtained by adding the correction constant to the actual register current value of the first fixed blade 612 as the register current value of the first fixed blade 612. Thereby, about the 1st fixed blade 612, the value which added the dimension and box depth of the upper flap part is displayed on the display apparatus 120 as a register present value, and about the 2nd fixed blade 622, the upper flap part The dimension value is displayed on the display device 120 as the register current value.

  Next, in step S110, the control device 100 completes switching from the single slotter mode to the double slotter mode, and in step S111, the control device 100 performs positioning control for the next order.

  This positioning control will be described with reference to FIG. When the positioning control is started, first, in step S301, the control device 100 obtains the box size (in other words, the processing size) of the cardboard sheet in the next order. Specifically, the control apparatus 100 acquires the dimension (a) of the upper flap part, the dimension (b) of the box depth, and the dimension (c) of the lower flap part in the cardboard sheet.

  Next, in step S302, the control device 100 obtains the register current value set in the first slotter unit 61 in the double slotter mode, that is, the register current value of the first fixed blade 612. Specifically, the control device 100 determines the values of the upper flap portion dimension (a), the box depth dimension (b), the upper slotter diameter (D), and the total blade length (f + g) as “ The register current value of the first fixed blade 612 is obtained by substituting it into the equation of “a + b − {(D × π / 2) − (f + g)}” (see FIG. 10).

  Next, in step S303, the control device 100 obtains the register current value set in the second slotter unit 62 in the double slotter mode, that is, the register current value of the second fixed blade 622. Specifically, the control device 100 sets the dimension (a) of the upper flap portion as the register current value of the second fixed blade 622 (see FIG. 10).

  Next, in step S304, the control device 100 controls the positioning of the first slotter unit 61 based on the register current value obtained in step S302, and positions the second slotter unit 62 based on the register current value obtained in step S303. Take control. Specifically, the control device 100 controls the differential adjustment motor of the differential positioning mechanism 650A based on the register current value obtained in step S302, whereby the first fixed blade 612 and the first fixed blade 612 that are in contact with each other. The movable blade 613 is integrally positioned and controlled, and the second fixed blade 622 in contact is controlled by controlling the differential adjustment motor of the differential positioning mechanism 650B based on the register current value obtained in step S303. And positioning control of the 2nd movable blade 623 is carried out integrally.

(Switching control from double slotter mode to single slotter mode)
Next, switching control from the double slotter mode to the single slotter mode according to the embodiment of the present invention will be specifically described with reference to FIGS. FIG. 16 is a flowchart showing switching control from the double slotter mode to the single slotter mode according to the embodiment of the present invention. 17 and 18 are flowcharts showing the cutter length acquisition control performed during this switching control. Specifically, FIG. 17 shows the cutter length acquisition control according to the first example according to the embodiment of the present invention, and FIG. 18 shows the cutter length acquisition control according to the second example of the embodiment of the present invention. Is shown. It is assumed that the production mode of the slotter device 6 is set to the double slotter mode at the start of the flow of FIG.

  As shown in FIG. 16, first, in step S401, the control device 100 starts initial mode setting for the slotter device 6, and then in step S402, the control device 100 sets the production mode to be set in the next order. , And obtains dimensional information (processed dimensions) of the corrugated cardboard sheet to be processed. For example, the control apparatus 100 acquires the production mode and dimension information input via the operation panel 110 by an operator (operator).

  Next, in step S403, the control device 100 determines whether or not the next order production mode is the single slotter mode. As a result, when the production mode of the next order is not the single slotter mode (step S403: No), the control device 100 proceeds to step S412 and starts positioning to the next order while maintaining the double slotter mode. Specifically, the control device 100 sets the register current value (see FIG. 10) in the double slotter mode according to the dimensional information of the cardboard sheet of the next order, and based on the set register current value, Positioning control of the fixed blade is performed by the dynamic positioning mechanisms 650A and 650B.

  On the other hand, when the production mode of the next order is the single slotter mode (step S403: Yes), the control device 100 proceeds to step S404 and starts switching from the double slotter mode to the single slotter mode.

  Next, in step S405, the control device 100 returns the register current value corrected for display in the double slotter mode to the register current value (individual current value) before correction for the single slotter mode. In step S <b> 406, the control device 100 executes blade length acquisition control to acquire the blade length of each slotter blade. Details of this cutter length acquisition control will be described later.

  Next, in step S407, the control device 100 compares the dimension information of the next order acquired in step S402 with the blade length acquired in step S406, and in step S408, the control device 100 performs the next order using the slotter blade currently applied. It is determined whether or not the corrugated cardboard sheet can be processed. Specifically, the control device 100 compares the cutter length of the fixed blade with the size of the upper flap portion of the corrugated cardboard sheet, and compares the cutter length of the movable blade with the size of the lower flap portion of the corrugated cardboard sheet. The control device 100 is currently applied when the blade length of the fixed blade is longer than the dimension of the upper flap portion of the cardboard sheet and the blade length of the movable blade is longer than the dimension of the lower flap portion of the cardboard sheet. It is determined that the next-order corrugated cardboard sheet can be processed by the existing slotter blade (step S408: Yes). In this case, the control device 100 proceeds to step S409.

  In step S409, the control device 100 sets the register current values of the first and second fixed blades 612 and 622 in the first and second slotter units 61 and 62 to be set to perform grooving in the next order. It is displayed on the display device 120. Specifically, the control device 100 causes the display device 120 to display the value of the dimension of the upper flap portion of the cardboard sheet as the register current value for both the first and second fixed blades 612 and 622.

  Next, in step S410, the control device 100 completes switching from the double slotter mode to the single slotter mode, and in step S411, the control device 100 performs positioning control for the next order. Specifically, the control device 100 sets the dimension of the upper flap portion of the corrugated cardboard sheet to the register current value, and controls the differential adjustment motors of the differential positioning mechanisms 650A and 650B. Each positioning control of the fixed blades 612 and 622 is performed. In addition, the control device 100 sets the size of the box depth in the corrugated cardboard sheet to the register current value, and controls the moving blade movement adjusting mechanisms 660A and 660B, so that the first and second moving blades 613 and 623 are controlled. Each positioning control is performed.

  On the other hand, in step S408, the control device 100 determines that the cutter length of the fixed blade is shorter than the dimension of the upper flap portion of the cardboard sheet, or the cutter length of the movable blade is smaller than the dimension of the lower flap portion of the cardboard sheet. If it is shorter, it is determined that the next-order corrugated cardboard sheet cannot be processed by the slotter blade currently applied (step S408: No). In this case, the control device 100 proceeds to step S413.

  In step S413, the control device 100 displays a warning on the display device 120 that it is necessary to attach a joint blade to the slotter blade. In step S414, the control device 100 positions the upper slotter to the predetermined joint attachment position in the yoke direction. That is, the control device 100 moves the upper slotter along the axial direction of the slotter shaft to a position where the joint blade can be easily attached. Then, when the attachment work of the joint blade by the operator is finished, the control device 100 acquires the input value of the blade length of the slotter blade input through the operation panel 110 by the operator in step S415, Alternatively, the cutter length acquisition control is executed similarly to step S406 to acquire the cutter length of the slotter blade. Thereafter, the control device 100 returns to step S407, and performs the processes after step S407 described above again.

  Next, the cutter length acquisition control according to the first example of the embodiment of the present invention will be described with reference to FIG. The cutter length acquisition control according to the first example is executed in step S406 in FIG.

  First, in step S501, the control device 100 controls the differential adjustment motors of the differential positioning mechanisms 650A and 650B, so that the slotter blade (both the fixed blade and the moving blade) has a predetermined blade length acquisition start position. Move. A position at which the slotter blade of the first slotter unit 61 and the slotter blade of the second slotter unit 61 do not interfere with each other is applied to the blade length acquisition start position. Typically, the blade length acquisition start position of the first slotter unit 61 is a position on the outer periphery of the first upper slotter 610 opposite to the second upper slotter 620 (in other words, the furthest away from the second upper slotter 620). The position on the outer periphery of the first upper slotter 610 is applied, and the position of the second slotter unit 62 on the outer periphery of the second upper slotter 620 on the opposite side to the first upper slotter 610 is used as the blade length acquisition start position of the second slotter unit 62. (In other words, the position on the outer periphery of the second upper slotter 620 farthest from the first upper slotter 610) is applied.

  Next, in step S502, the control device 100 determines whether or not the slotter blade is disposed at the blade length acquisition start position. As a result, when the slotter blade is disposed at the cutter length acquisition start position (step S502: Yes), the control device 100 proceeds to step S503. On the other hand, when the slotter blade is not arranged at the blade length acquisition start position (step S502: No), the control device 100 returns to step S502 and performs determination again.

  In step S503, the control device 100 controls the movable blade movement adjustment mechanisms 660A and 660B to move the movable blade to a predetermined normal speed (moving blade movement adjustment mechanism) in the negative direction (counterclockwise direction) of the upper slotter. 660A and 660B are speeds that are normally used when moving the moving blade, and are relatively fast speeds, and so on. In step S504, the control device 100 determines whether or not the position sensors 671 and 672 are turned on, that is, determines whether or not the moving blade is detected by the position sensors 671 and 672. As a result, when the position sensors 671 and 672 are turned on (step S504: Yes), the control device 100 proceeds to step S505. In such steps S503 and S504, the control device 100 causes the position sensor 671 and 672 to quickly determine the rough position of the end of the moving blade on the negative direction side by moving the moving blade at a normal speed. To detect. On the other hand, when the position sensors 671 and 672 are not on (step S504: No), the control device 100 returns to step S504 and makes a determination again.

  In step S505, the control device 100 stops the movement of the moving blade in the negative direction, and moves the moving blade in the positive direction (clockwise direction) of the upper slotter at a normal speed. In step S506, the control device 100 determines whether or not the position sensors 671 and 672 are turned off, that is, determines whether or not the moving blade is no longer detected by the position sensors 671 and 672. As a result, when the position sensors 671 and 672 are turned off (step S506: Yes), the control device 100 proceeds to step S507. In such steps S505 and S506, the control device 100 temporarily returns the movable blade to a position not detected by the position sensors 671 and 672. On the other hand, when the position sensors 671 and 672 are not turned off (step S506: No), the control device 100 returns to step S506 and performs determination again.

  In step S507, the control device 100 controls the moving blade movement adjustment mechanisms 660A and 660B to move the moving blade in the negative direction at a low speed (a speed sufficiently lower than the normal speed described above. The same shall apply hereinafter. ). In step S508, the control device 100 determines whether or not the position sensors 671 and 672 are turned on. As a result, when the position sensors 671 and 672 are turned on (step S508: Yes), the control device 100 proceeds to step S509. In such steps S507 and S508, the control device 100 detects the exact position of the end of the moving blade on the negative direction by the position sensors 671 and 672 by moving the moving blade at a low speed. I am doing so. On the other hand, when the position sensors 671 and 672 are not on (step S508: No), the control device 100 returns to step S508 and makes a determination again.

  In step S509, the control device 100 stores the register current value of the moving blade when the position sensors 671 and 672 are turned on in step S508. That is, the control device 100 stores the register current value corresponding to the position of the end of the moving blade on the negative direction side.

  Next, in step S510, the control device 100 controls the movable blade movement adjustment mechanisms 660A and 660B to cause the movable blade to move in the negative direction at a normal speed. In this case, the control device 100 further moves the movable blade in the negative direction so as to pass the position sensors 671 and 672 (while the movable blade passes through the position sensors 671 and 672, the position sensor 671). , 672 remain on). In step S511, the control device 100 determines whether or not the position sensors 671 and 672 are turned off. As a result, when the position sensors 671 and 672 are turned off (step S511: Yes), the control device 100 proceeds to step S512. In such steps S510 and S511, the control device 100 moves the moving blade at a normal speed so that the rough position of the end of the moving blade on the positive direction side can be quickly determined by the position sensors 671 and 672. To detect. On the other hand, when the position sensors 671 and 672 are not turned off (step S511: No), the control device 100 returns to step S511 and performs determination again.

  In step S512, the control device 100 controls the movable blade movement adjustment mechanisms 660A and 660B to cause the movable blade to move in the positive direction of the upper slotter at a low speed. In step S513, the control device 100 determines whether or not the position sensors 671 and 672 are turned on. As a result, when the position sensors 671 and 672 are turned on (step S513: Yes), the control device 100 proceeds to step S514. In such steps S512 and S513, the control device 100 detects the accurate position of the end of the moving blade on the positive direction side by the position sensors 671 and 672 by moving the moving blade at a low speed. I am doing so. On the other hand, when the position sensors 671 and 672 are not on (step S513: No), the control device 100 returns to step S513 and performs determination again.

  In step S514, the control device 100 stores the register current value of the moving blade when the position sensors 671 and 672 are turned on in step S513. That is, the control device 100 stores the register current value corresponding to the position of the end portion of the moving blade on the positive direction side.

  Next, in step S515, the control device 100 obtains the blade length of the moving blade by taking the difference between the register current value stored in step S509 and the register current value stored in step S514. This corresponds to obtaining the blade length of the moving blade from the relative difference between the position of the end of the moving blade on the negative direction side and the position of the end of the moving blade on the positive direction side.

  Next, in step S516, the control device 100 acquires the total blade length of the fixed blade and the movable blade, which has been used in the double slotter mode performed before the blade length acquisition control, and this total blade length. Is subtracted from the blade length of the movable blade obtained in step S515 to obtain the blade length of the fixed blade.

  In addition, the control apparatus 100 performs the cutter length acquisition control which concerns on the 1st example shown in FIG. 17 about both the 1st and 2nd slotter units 61 and 62, and the 1st and 2nd fixed blades 612 and 622, and The blade lengths of the first and second movable blades 613 and 623 are obtained.

  According to the blade length acquisition control according to the first example as described above, the position of the moving blade is detected by the position sensors 671 and 672 by combining the movement of the moving blade at the normal speed and the movement of the moving blade at the low speed. Therefore, an accurate blade length can be obtained relatively quickly.

Next, the cutter length acquisition control according to the second example of the embodiment of the present invention will be described with reference to FIG. The cutter length acquisition control according to the second example is executed in step S406 in FIG.
The cutter length acquisition control according to the second example is basically performed in place of the cutter length acquisition control according to the first example described above. In particular, the cutter length acquisition control according to the second example may be performed when the control device 100 stores a cutter length pattern input in advance. This blade length pattern includes the blade lengths of various angled blades, the blade lengths of various joint blades, and the blade lengths of various slotter blades obtained by combining these square blades and joint blades.
The control device 100 stores both control programs for the cutter length acquisition control according to the first example and the cutter length acquisition control according to the second example, and reads out one of the control programs. Thus, the cutter length acquisition control according to the first example and the cutter length acquisition control according to the second example may be selectively performed.

  When the cutter length acquisition control according to the second example is started, first, in step S601, the control device 100 controls the differential adjustment motors of the differential positioning mechanisms 650A and 650B, thereby controlling the slotter blade (fixed). Both the blade and the moving blade) are moved to a predetermined blade length acquisition start position. The same position as that described in the cutter length acquisition control according to the first example of FIG. 17 is applied to the cutter length acquisition start position.

  Next, in step S602, the control device 100 determines whether or not the slotter blade is disposed at the blade length acquisition start position. As a result, when the slotter blade is disposed at the blade length acquisition start position (step S602: Yes), the control device 100 proceeds to step S603. On the other hand, when the slotter blade is not arranged at the blade length acquisition start position (step S602: No), the control device 100 returns to step S602 and performs determination again.

  Next, in step S603, the control device 100 controls the movable blade movement adjustment mechanisms 660A and 660B to cause the movable blade to incline by a predetermined distance (for example, 50 mm) at a normal speed in the negative direction. That is, the control device 100 separates the movable blade from the fixed blade by a predetermined distance.

  Next, in step S604, the control device 100 controls the differential positioning mechanism 650A, so that the slotter blades (both fixed and moving blades) of the first slotter unit 61 are moved in the negative direction at a normal speed. At the same time, by controlling the differential positioning mechanism 650B, the slotter blades (both fixed and moving blades) of the second slotter unit 62 are moved in the forward direction at a normal speed.

  Next, in step S605, the control device 100 determines whether or not the position sensors 671 and 672 are turned on. As a result, when the position sensors 671 and 672 are turned on (step S605: Yes), the control device 100 proceeds to step S606. In such S605, the control device 100 promptly detects the rough position of one end of the slotter blade of either the fixed blade or the movable blade by the position sensors 671 and 672. On the other hand, when the position sensors 671 and 672 are not on (step S605: No), the control device 100 returns to step S605 and performs determination again.

  In step S606, the control device 100 stores the register current value of the slotter blade when the position sensors 671 and 672 are turned on in step S605. That is, the control device 100 stores the register current value corresponding to the position of one end of the slotter blade.

  Next, in step S607, the control device 100 determines whether or not the position sensors 671 and 672 are turned off. As a result, when the position sensors 671 and 672 are turned off (step S607: Yes), the control device 100 proceeds to step S608. In such S607, the control device 100 determines the rough position of the other end of the slotter blade of either the fixed blade or the moving blade (the end of the slotter blade different from the end detected in step S605). Sensors 671 and 672 are used to promptly detect. On the other hand, when the position sensors 671 and 672 are not turned off (step S607: No), the control device 100 returns to step S607 and performs determination again.

  In step S608, the control device 100 stores the register current value of the slotter blade when the position sensors 671 and 672 are turned off in step S607. That is, the control device 100 stores the register current value corresponding to the position of the other end of the slotter blade.

  Next, in step S609, the control device 100 determines whether or not four register current values have been stored for each of the first and second slotter units 61 and 62 in the processing so far. That is, for each of the first and slotter units 61 and 62, the control device 100 stores the register current values (four register current values) corresponding to the positions of the two ends of each of the fixed blade and the movable blade. Determine whether or not. As a result, when the four register current values are stored (step S609: Yes), the control device 100 proceeds to step S610. On the other hand, when the four register current values are not stored (step S609: No), in particular, when only two register current values are stored, the control device 100 returns to step S604, and performs the processing after step S604. Try again. That is, the control device 100 acquires and stores the remaining two register current values.

  In step S610, the control device 100 obtains the blade length of the slotter blade by taking the difference between the register current value stored in step S606 and the register current value stored in step S608. Specifically, the control device 100 obtains the difference between the register current value corresponding to one end of the fixed blade and the register current value corresponding to the other end of the fixed blade, so that the cutter of the fixed blade The length of the movable blade is obtained, and the difference between the register current value corresponding to one end of the movable blade and the register current value corresponding to the other end of the movable blade is taken to obtain the blade length of the movable blade. Ask. In this case, as described above, since the position of the end of each slotter blade is roughly detected, the calculation of the blade length of the slotter blade in step S610 corresponds to an approximation (that is, the exact blade length is I tend not to find it).

  Next, in step S611, the control device 100 first acquires a blade length pattern that has been input and stored in advance. In this case, the control device 100 acquires the blade lengths of various angled blades, the blade lengths of various joint blades, and the blade lengths of various slotter blades that are a combination of these square blades and joint blades. And the control apparatus 100 determines the blade length of each slotter blade based on the acquired blade length pattern and the blade length estimated by step S610. Specifically, the control device 100 selects the tool length included in the tool length pattern as close to the tool length estimated in step S610, and determines to apply the selected tool length. .

  According to the cutter length acquisition control according to the second example, since the cutter length roughly obtained by moving the slotter blade at a normal speed and the cutter length pattern stored in advance are used. An accurate blade length can be obtained more quickly.

  In addition, you may apply the method of calculating | requiring the cutter length using such a cutter length pattern, when calculating | requiring the total cutter length of a fixed blade and a moving blade. In other words, the total tool length is included in the tool length pattern, and the total tool length included in the tool length pattern is described in the section “Switching control from single slotter mode to double slotter mode” above. Alternatively, it may be selected that is close to the total tool length obtained by the above method, and the selected total tool length may be applied.

<Effect>
Next, the main effects of the corrugated cardboard box making machine according to the embodiment of the present invention will be described.

  According to this embodiment, when performing the double slotter mode, the total blade length of the fixed blade and the movable blade can be obtained. Therefore, by using such a total blade length, each slotter blade can be appropriately positioned when performing the double slotter mode. In addition, since the total blade length of the fixed blade and the moving blade can be automatically obtained, switching from the single slotter mode to the double slotter mode can be automatically performed.

  Moreover, according to this embodiment, the moving blade is moved toward the fixed blade, and the total blade length in a state where the moving blade is actually in contact with the fixed blade can be obtained. Therefore, even when there is a slight gap between the fixed blade and the movable blade in the contact state, it is possible to obtain an accurate total blade length considering such a gap. Moreover, based on the torque applied when moving the moving blade in this way, it can be accurately determined that the moving blade is in contact with the fixed blade.

  Further, according to the present embodiment, since the movable blade and the fixed blade are brought into contact with each other in the lower region of the cylinder circumference of the upper slotter, a foreign object such as a piece of paper or paper dust is sandwiched between the slotter blade, and the slotter blade It is possible to prevent the occurrence of a problem in the contact of each other and damage to the moving blade movement adjustment mechanisms 660A and 660B that move the slotter blade.

  In addition, according to the present embodiment, it is possible to obtain the accurate blade length of each slotter blade using the position sensors 671 and 672. Therefore, when switching from the double slotter mode to the single slotter mode, the single slotter mode can be appropriately implemented. In this case, an accurate blade length can be promptly obtained by using a blade length pattern stored in advance.

  Further, according to the present embodiment, in the double slotter mode, for the second fixed blade 622 of the second slotter unit 62, the actual register current value is displayed as it is, while the first fixed blade of the first slotter unit 61 is displayed. For 612, the actual register current value is not displayed as it is, but the register current value is corrected to a value corresponding to the processing size of the cardboard sheet, and the corrected value is displayed. Therefore, in the double slotter mode, both the first and second fixed blades 612 and 622 display a value corresponding to the processing size of the cardboard sheet, so that the operator can display the displayed value and the processing size of the cardboard sheet. Thus, various adjustments relating to the slotter device 6 can be easily performed.

  Further, according to the present embodiment, the register current value displayed for the first fixed blade 612 can be appropriately corrected based on the total blade length of the first fixed blade 612 and the first movable blade 613. In this case, since the total blade length is obtained as described above, the register current value can be automatically corrected based on the total blade length.

  In addition, according to the present embodiment, the value obtained by adding the length of the upper flap portion of the corrugated cardboard sheet and the box depth is displayed as the register current value of the first fixed blade 612. Therefore, the displayed value and the processing of the corrugated cardboard sheet are displayed. The operator can surely understand the relationship with the dimensions.

<Modification>
Next, a modification of the above embodiment will be described.

  In the above-described embodiment, the total blade length of the fixed blade and the movable blade is obtained based on the register current value of each slotter blade when the movable blade is moved to contact with the fixed blade. Then, as in the case of obtaining the blade length of each slotter blade (see FIGS. 17 and 18), the total blade length may be obtained using the position sensors 671 and 672. For example, the total blade length may be obtained by moving the slotter blades in contact with each other in the vicinity of the position sensors 671 and 672 and detecting the positions of both ends of the slotter blades. . This also makes it possible to obtain an accurate total blade length.

  In the above-described embodiment, the control device 100 obtains the total blade length of the fixed blade and the movable blade, but in another example, the operator knows the total blade length, and this total blade length. When the height is input from the operation panel 110 or the like, the control device 100 may use the input total blade length as it is without obtaining the total blade length.

  In the embodiment described above, the value (a + b) obtained by adding the length of the upper flap portion of the corrugated cardboard sheet and the box depth is displayed as the register current value of the first fixed blade 612. In other examples, the corrugated cardboard sheet is displayed. The box depth value (b) may be displayed as the register current value of the first fixed blade 612. In this case, using “(D × π / 2) − (f + g) −b” as the correction constant, the value obtained from “a + b − {(D × π / 2) − (f + g)}” is used. Then, the value obtained by adding the correction constants may be displayed.

In the embodiment described above, in the double slotter mode, the actual register current value is displayed as it is for the second fixed blade 622 of the second slotter unit 62, while the first fixed blade 612 of the first slotter unit 61 is displayed. Instead of displaying the actual register current value as it is, the register current value is corrected to a value according to the processing size of the cardboard sheet, and the corrected value is displayed. This embodiment is made by paying attention to the relationship between the register current value to be displayed and the processing size of the cardboard sheet.
Another example focuses on the relationship between the register current value used for control (positioning control) and the processing size of the cardboard sheet. Specifically, in this other example, when performing the double slotter mode, for the second fixed blade 622 of the second slotter unit 62, the value corresponding to the processing size of the cardboard sheet is used as it is as the register current value. While performing the positioning control, the first fixed blade 612 of the first slotter unit 61 performs the positioning control using a value obtained by correcting the value corresponding to the processing size of the cardboard sheet as the register current value. Specifically, for the second fixed blade 622, the length value (a) of the upper flap portion of the cardboard sheet is used as the register current value, while for the first fixed blade 612, the upper flap portion of the cardboard sheet. A value obtained by correcting a value (a + b) obtained by adding the length of the box and the box depth is used as the register current value. More specifically, a value obtained by subtracting a correction constant of “(D × π / 2) − (f + g)” from a value (a + b) obtained by adding the length of the upper flap portion and the box depth, that is, “a + b − {(D × The value obtained from the equation of “π / 2) − (f + g)}” is used as the register current value of the first fixed blade 612. According to such another example, positioning control of each slotter blade can be appropriately performed in the double slotter mode.

DESCRIPTION OF SYMBOLS 1 Corrugated paper box making machine 2 Paper feeder 4 Printing device 6 Slotter device 61 1st slotter unit 62 2nd slotter unit 610 Upper 1st slotter 620 Upper 2nd slotter 612 First fixed slotter blade 613 First moving slotter blade 622 First 2 fixed slotter blades 623 second moving slotter blades 650B differential positioning mechanism 660B moving blade movement adjusting mechanism 671, 672 position sensor 100 control device 120 display device

Claims (8)

A corrugated cardboard box making machine having a slotter device for grooving a corrugated cardboard sheet,
This slotter device
A first slotter that is a rotating cylinder connected to a rotating shaft and is fixed on the outer periphery of the first slotter, and a square blade is attached to an end of the first slotter on the side opposite to the rotating direction when processing the cardboard sheet. A first fixed slotter blade including the first slotter, and a first movement including a square blade at an end of the first slotter on the rotation direction side when processing the corrugated cardboard sheet on the outer periphery of the first slotter. A first slotter unit including a slotter blade;
A second slotter which is a rotating cylinder connected to a rotating shaft and is fixed on the outer periphery of the second slotter, and a square blade is attached to the end of the second slotter on the opposite side to the rotating direction when processing the cardboard sheet. A second fixed slotter blade provided with a second blade, and a second movement provided with a square blade at an end of the second slotter on the rotational direction side when processing the corrugated cardboard sheet on the outer periphery of the second slotter. A slotter blade, and a second slotter unit provided downstream of the first slotter unit in the cardboard sheet conveying direction;
Have
The corrugated board box making machine
The first fixed slotter blade and the first moving slotter blade are separated from each other by a predetermined distance on the outer periphery of the first slotter, and the second fixed slotter blade and the second moving slotter blade are separated from each other by the second slotter. The two cardboard sheets are fed while the first and second slotters make one rotation in a state of being separated by a predetermined distance on the outer periphery of the outer periphery, and the grooving process for the two cardboard sheets is performed as described above. A first production mode to be performed by each of the second slotter units;
The first fixed slotter blade and the first moving slotter blade are brought into contact with each other on the outer periphery of the first slotter, and the second fixed slotter blade and the second moving slotter blade are brought into contact with the outer periphery of the second slotter. In a state where the first and second slotters make one rotation in a state where they are in contact with each other, one cardboard sheet is fed, and grooving processing for the one cardboard sheet is performed by the first and second slotter units. A second production mode that is performed by both,
A control device configured to switch and implement;
A display device for displaying predetermined information based on the control by the control device;
Have
The control device
In order to groove the corrugated cardboard sheet by the first slotter unit, the relative position at which the square blades of the first fixed slotter blades of the first slotter unit should be arranged with respect to the downstream edge of the corrugated cardboard sheet. In order to control the positioning of the first fixed slotter blade using the first positioning parameter and to groov the corrugated cardboard sheet by the second slotter unit, the second fixing of the second slotter unit Position control of the second fixed slotter blade is performed using a second positioning parameter indicating the relative position at which the square blade of the slotter blade should be disposed with respect to the downstream edge of the corrugated cardboard sheet,
When the second production mode is performed, for the second positioning parameter, the value corresponding to the parameter is displayed on the display device as it is, while the first positioning parameter corresponds to the parameter. Correct the value to be a value according to the size of the corrugated cardboard sheet to be grooved, and display the corrected value on the display device,
A cardboard sheet box making machine. The control device corrects the first positioning parameter based on a total blade length along a circumferential direction of the first fixed slotter blade and the first moving slotter blade.
The corrugated board box making machine according to claim 1. The control device acquires and stores the total blade length when switching from the first production mode to the second production mode, and the first positioning parameter based on the stored total blade length. Correct,
A corrugated board box making machine according to claim 2. When the diameter of the first slotter is “D”, the blade length of the first fixed slotter blade is “f”, and the blade length of the first moving slotter blade is “g”, The first positioning parameter is corrected by adding “D × π / 2− (f + g)” to the value corresponding to the first positioning parameter.
The corrugated board box making machine according to any one of claims 1 to 3. When the length of the upper flap and the box depth of the corrugated cardboard sheet to be grooved are “a” and “b”, respectively, the control device corrects the value corresponding to the first positioning parameter, Display the value of “a + b” on the display device;
The corrugated board box making machine according to any one of claims 1 to 4. When the length of the upper flap and the box depth of the corrugated cardboard sheet to be grooved are “a” and “b”, respectively, the control device corrects the value corresponding to the first positioning parameter, Displaying the value of “b” on the display device;
The corrugated board box making machine according to any one of claims 1 to 4. The control device further includes a third positioning parameter indicating a relative position at which the square blade of the first moving slotter blade in the first slotter unit should be disposed with respect to the square blade of the first fixed slotter blade. And controlling the positioning of the first moving slotter blade, and the square blade of the second moving slotter blade in the second slotter unit should be disposed relative to the square blade of the second fixed slotter blade. Position control of the second moving slotter blade is performed using the fourth positioning parameter indicating the target position.
The corrugated board box making machine according to any one of claims 1 to 6. A corrugated cardboard box making machine having a slotter device for grooving a corrugated cardboard sheet,
This slotter device
A first slotter that is a rotating cylinder connected to a rotating shaft and is fixed on the outer periphery of the first slotter, and a square blade is attached to an end of the first slotter on the side opposite to the rotating direction when processing the cardboard sheet. A first fixed slotter blade including the first slotter, and a first movement including a square blade at an end of the first slotter on the rotation direction side when processing the corrugated cardboard sheet on the outer periphery of the first slotter. A first slotter unit including a slotter blade;
A second slotter, which is a rotating cylinder connected to the second rotating shaft and rotating, is fixed on the outer periphery of the second slotter, and an angle is formed at the end of the second slotter on the opposite side to the rotating direction when processing the cardboard sheet. A second fixed slotter blade provided with a blade, a second fixed slotter blade provided on the outer periphery of the second slotter so as to be movable in the circumferential direction, and provided with a square blade at the end portion on the rotational direction side when the corrugated cardboard sheet of the second slotter is processed. A second slotter unit provided on the downstream side of the first slotter unit in the conveying direction of the cardboard sheet,
Have
The corrugated board box making machine
The first fixed slotter blade and the first moving slotter blade are separated from each other by a predetermined distance on the outer periphery of the first slotter, and the second fixed slotter blade and the second moving slotter blade are separated from each other by the second slotter. The two cardboard sheets are fed while the first and second slotters make one rotation in a state of being separated by a predetermined distance on the outer periphery of the outer periphery, and the grooving process for the two cardboard sheets is performed as described above. A first production mode to be performed by each of the second slotter units;
The first fixed slotter blade and the first moving slotter blade are brought into contact with each other on the outer periphery of the first slotter, and the second fixed slotter blade and the second moving slotter blade are brought into contact with the outer periphery of the second slotter. In a state where the first and second slotters make one rotation in a state where they are in contact with each other, one cardboard sheet is fed, and grooving processing for the one cardboard sheet is performed by the first and second slotter units. A second production mode that is performed by both,
Having a control device configured to switch between,
This controller is
In order to groove the corrugated cardboard sheet by the first slotter unit, the relative position at which the square blades of the first fixed slotter blades of the first slotter unit should be arranged with respect to the downstream edge of the corrugated cardboard sheet. In order to control the positioning of the first fixed slotter blade using the first positioning parameter and to groov the corrugated cardboard sheet by the second slotter unit, the second fixing of the second slotter unit Position control of the second fixed slotter blade is performed using a second positioning parameter indicating the relative position at which the square blade of the slotter blade should be disposed with respect to the downstream edge of the corrugated cardboard sheet,
When the second production mode is performed, a value corresponding to the size of the corrugated cardboard sheet to be grooved is used as it is for the second positioning parameter, while the grooving is used for the first positioning parameter. Use the value corrected for the value of the corrugated cardboard sheet to be processed,
A cardboard sheet box making machine.

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