JP2019094189A - Corrugated fiberboard sheet feeding device and carton making machine for corrugated fiberboard sheet - Google Patents

Abstract

To provide a corrugated fiberboard sheet feeding device capable of matching a working position by means of a printer and a die cutter to a desirable position with respect to both of two sheets of corrugated fiberboard sheets fed out during one rotation of a printing cylinder.SOLUTION: A corrugated fiberboard sheet feeding device 2 feeds out two sheets of corrugated fiberboard sheets SH1, SH2 during one rotation of printing cylinders 30A, 31A and performs variable speed control of roller motors 90, 91, 102, 103 on the basis of a speed control pattern including an acceleration region, a constant speed region and a deceleration region for controlling rotation feeding rollers 124 to 127. The corrugated fiberboard sheet feeding device 2 differentiates a speed control pattern of the acceleration region applied to the first corrugated fiberboard sheet SH1 and the speed control pattern of acceleration region applied to the second corrugated fiberboard sheet SH2 and, thereby, at least either feeding timing of the first and second corrugated fiberboard sheets SH1, SH2 is changed.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a corrugated sheet feeder and a corrugated sheet box making machine, and in particular, to a corrugated sheet sheet feeding apparatus which feeds out two corrugated sheet sheets while the printing cylinder of the printing apparatus rotates once, and the corrugated sheet feed The present invention relates to a carton sheet making machine having an apparatus.

  Conventionally, a corrugated cardboard sheet feeding apparatus for feeding the laminated corrugated cardboard sheets one by one, a printing apparatus for printing on the corrugated cardboard sheets, a creaser for forming creases and grooving on the corrugated cardboard sheets, BACKGROUND ART A cardboard sheet box making machine having a die cutter for punching a cardboard sheet is known.

  In addition, in such a corrugated board sheet making machine, a production method is known in which two corrugated board sheets are sequentially fed in while the printing cylinder of the printing apparatus rotates one turn, and these two corrugated board sheets are processed. ing. For example, Patent Document 1 discloses a single sheet feeding mode in which only one corrugated sheet is fed in a predetermined processing cycle in which the printing cylinder of the printing apparatus makes one rotation, and in the processing cycle, two corrugated sheets are sequentially fed A corrugated sheet feeder for switching between sheet feeding mode and execution is disclosed.

  Here, in the case of performing the two-sheet feeding mode, in the printing apparatus, two sheets continuously fed by the corrugated sheet feeder by each of the two printing plate members attached to the outer periphery of the printing cylinder. Printing is performed on a cardboard sheet. In addition, in the die cutter, the two punching dies attached to the outer periphery of the die cylinder perform punching on the two corrugated sheets continuously fed by the corrugated sheet feeder.

  In the following, in the two-sheet feeding mode, of the two sheets of cardboard sheets delivered by the cardboard sheet feeding device while the printing cylinder rotates one turn, the sheet which precedes the “odd-numbered sheet of cardboard sheets” (This sheet corresponds to the “first corrugated sheet”), and of the two corrugated sheets, the one following is referred to as the “even-numbered corrugated sheet”. It corresponds to "the second cardboard sheet").

JP, 2016-141023, A

  A printing apparatus applied to the case of performing the two-sheet feeding mode will be described with reference to FIG. FIG. 16 is a schematic view of the printing cylinder 1001 of the printing apparatus observed from the direction parallel to the axial direction. As shown in FIG. 16, when the two-sheet feeding mode is performed, one film 1002 to which two printing plate members 1003A and 1003B are attached is wound around the outer peripheral surface of the printing cylinder 1001. The printing plate member 1003A is used to print on the odd-numbered corrugated sheet, and the printing plate member 1003B is used to print on the even-numbered corrugated sheet. Since the printing plate members 1003A and 1003B are adhesively fixed to the film 1002, the relative positional relationship between the printing plate members 1003A and 1003B is fixed.

  Next, referring to FIGS. 17A and 17B, the relative positional relationship between the odd numbered printing plate member 1003A and the even numbered printing plate member 1003B deviates due to a manufacturing error. Will be explained. FIGS. 17A and 17B schematically show plan views of the film 1002 to which the printing plate members 1003A and 1003B are fixed. FIG. 17A shows the relative positional relationship between the printing plate member 1003A and the printing plate member 1003B when there is no manufacturing error. The distance between the printing plate members 1003A and 1003B in this case is "L11". On the other hand, FIG. 17B shows the relative positional relationship between the printing plate member 1003A and the printing plate member 1003B when there is a manufacturing error. The distance between the printing plate members 1003A and 1003B in this case is "L12", which is smaller than the distance L11 when there is no manufacturing error (L12 <L11). That is, the gap between the printing plate member 1003A and the printing plate member 1003B is narrowed due to a manufacturing error.

  Although FIG. 17B shows the case where the distance between the printing plate members 1003A and 1003B is narrow due to a manufacturing error, the distance between the printing plate members 1003A and 1003B may be wide due to a manufacturing error. . In addition, although such a manufacturing error basically occurs due to a manufacturing error, it also includes an aging.

  The manufacturing error as described above occurs not only in the printing apparatus but also in the die cutter. In the die cutter, a punching die for odd-numbered sheets and a punching die for even-numbered sheets are fixed in a wood form, and the wood form is wound around the outer peripheral surface of the die cylinder. The relative positional relationship between such odd-numbered sheet punching dies and even-numbered sheet punching dies may be shifted due to a manufacturing error as in the printing plate member of the printing apparatus.

  By the way, usually, in preparation work before production, two corrugated cardboard sheets are fed out, and rotational phase adjustment (so-called register adjustment) of a printing cylinder, a slotter and a die cylinder is performed. That is, two corrugated cardboard sheets are fed out and subjected to trial processing, and each processing position of the two corrugated cardboard sheets after this trial processing is checked, and this processing position is a desired position on the sheet (processing location is arranged The rotational phase of the printing plate member of the printing cylinder, the slotter blade of the slotter, and the punching die of the die cylinder are adjusted so as to be disposed on the sheet.

  Specifically, the rotational phase adjustment of the printing plate member and the punching die is performed so as to match only one of the first and second sheets of the two cardboard sheets used in the preparation work. Become. Because the printing plate member and the punching die are fixed to the outer peripheral surface of the cylinder, if the rotational phase is determined according to one of the first and second corrugated sheets, the rotational phase relative to the other corrugated sheet is determined. Because it is decided by itself. In addition, since the slot is configured to move two slotter blades in the circumferential direction, it is possible to independently adjust the phase of each of the two slotter blades.

  In such rotational phase adjustment, when there is a manufacturing error in the printing plate member or the punching die, the processing position of one of the first and second corrugated sheet can be adjusted to the desired position. It was not possible to align the processing position of both the first and second corrugated sheets to the desired position. As an example, if the print position on both the first and second corrugated sheets deviates from the desired position as a result of trial processing, the print position on the first corrugated sheet is desired. It is assumed that the rotational phase adjustment of the printing cylinder is performed so as to align with the position. Then, when trial processing is performed again after this adjustment, the printing position of the first corrugated sheet is disposed at the desired position, but the printing position of the second corrugated sheet may still be shifted. is there. As described above, when the printing position is shifted even after the rotational phase adjustment, the cause of the printing position shift is considered to be due to the manufacturing error of the printing plate member. That is, due to a manufacturing error, if the arrangement interval of the two printing plate members is wider or narrower than the correct interval, the printing position of the second corrugated sheet will shift even after the rotational phase adjustment. As described above, when the processing position shifts due to manufacturing errors occur, the processing position of both the first and second corrugated sheets is set to the desired position by the conventional rotational phase adjustment method. I could not match it.

  Under normal circumstances, since the printing plate member and the wood mold (including the punching die) should be manufactured according to the specified dimensions, it is desirable to remake the printing plate member and the wood mold if there is a manufacturing error. However, there are many cases where it is not time-consuming to remake a printing member or a wooden mold, and it is expensive, so it is desirable to cope with manufacturing errors on the machine side.

  The present invention has been made to solve the above-mentioned problems, and a corrugated sheet feeder for feeding two corrugated sheets during one rotation of a printing cylinder, and a corrugated board having the corrugated sheet feeder. In sheet forming machines, when there is a manufacturing error in the printing plate member applied to the printing apparatus or the wood mold applied to the die cutter, the processing position by the printing apparatus or die cutter for both of the two corrugated sheets is appropriate to the desired position The purpose is to match.

  In order to achieve the above object, the present invention is a corrugated sheet feeder, comprising: a feeding roller for feeding the lowermost corrugated sheet of the laminated corrugated sheets along a feeding direction; A roller motor for driving to rotate, an acceleration region for accelerating the rotation of the feeding roller, a constant velocity region for rotating the feeding roller at a constant speed after the acceleration region, and after the constant velocity region And a variable speed control of the roller motor based on a speed control pattern including a speed reduction area for decelerating the rotation of the feed roller, and the corrugated sheet is fed by the feed roller, and the corrugated sheet is fed Of the two cardboard sheets, such as two cardboard sheets being fed out during one revolution of the printing cylinder of the printing device provided downstream of the device. And a controller configured to apply a speed control pattern to each of the plurality of corrugated cardboard sheets, the controller being applied to the first corrugated cardboard sheet to be delivered first. The first and second speed control patterns are different from each other by setting the speed control pattern of the acceleration area to be different from the speed control pattern of the acceleration area applied to the second corrugated board sheet to be fed out later among the two corrugated board sheets. The invention is characterized in that it is configured to change the feeding timing of at least one of the corrugated cardboard sheets.

According to the present invention configured as described above, the first corrugated cardboard sheet (odd-numbered sheets) to be fed first when the two corrugated cardboard sheets are fed by the corrugated cardboard sheet feeding device while the printing cylinder rotates once. The first corrugated sheet to be sent out and the second corrugated sheet to be sent out by changing the feeding timing of at least one of the corrugated sheet and the second corrugated sheet (even-numbered corrugated sheet) to be fed out later And the interval (transport interval) can be appropriately changed. The “feed timing” is a timing at which the rear end of the corrugated cardboard sheet comes out of the corrugated cardboard sheet feeding device and is sent out toward the printing device or die cutter on the downstream side.
According to the present invention, even if there is a manufacturing error in the printing plate member applied to the printing apparatus or the wood mold (including the punching die) applied to the die cutter, the first corrugated sheet and the second corrugated sheet The processing position by the printing apparatus or the die cutter can be properly adjusted to the desired position for both of the corrugated cardboard sheets.

In the present invention, preferably, the rotation angle of the printing cylinder is 0 between the velocity control pattern of the acceleration region applied to the first corrugated sheet and the velocity control pattern of the acceleration region applied to the second corrugated sheet. The timing at which acceleration of the first corrugated sheet is started, which is defined based on °, and the timing at which acceleration of the second corrugated sheet is started, which is defined based on the rotation angle 180 of the printing cylinder, Are different.
According to the present invention configured as described above, the feeding timing of at least one of the first and second corrugated cardboard sheets is appropriately changed to reliably change the conveyance interval of the first and second corrugated cardboard sheets. be able to. In addition, since the acceleration start timing is changed while maintaining the same magnitude of acceleration, it is possible to suppress the slip of the cardboard sheet on the feeding roller. That is, although the corrugated sheet tends to slip on the feeding roller when the acceleration is increased, such slip can be suppressed by maintaining the magnitude of the acceleration the same. Therefore, stable delivery by the corrugated sheet feeder can be secured.

In the present invention, preferably, the first corrugated sheet is provided between the speed control pattern of the accelerating area applied to the first corrugated sheet and the speed controlling pattern of the accelerating area applied to the second corrugated sheet. The magnitude of the acceleration to be accelerated is different from the magnitude of the acceleration to accelerate the second corrugated sheet.
According to the present invention configured as described above, the feeding timing of at least one of the first and second corrugated cardboard sheets is appropriately changed to reliably change the conveyance interval of the first and second corrugated cardboard sheets. be able to. In addition, since the magnitude of the acceleration is changed while maintaining the same acceleration start timing, it is possible to suppress that the lowermost cardboard sheet falls and slips on the feeding roller during acceleration. That is, when acceleration start timing is advanced, acceleration of the feed roller starts before the lowermost corrugated sheet contacts the feed roller, and the lowermost corrugated sheet may slip when it contacts the feed roller. However, if the acceleration start timing is kept the same, the difference between the timing at which the lowermost cardboard sheet contacts the feed roller and the timing at which the feed roller starts to accelerate is kept constant. Slip can be suppressed. Therefore, stable delivery by the corrugated sheet feeder can be secured.

In the present invention, preferably, the apparatus further comprises an input device for inputting a set value for changing a feeding timing of at least one of the first and second corrugated cardboard sheets, and the control device is an input device The speed control pattern of each of the first and second corrugated cardboard sheets is adapted to be applied according to the set value input to the.
According to the present invention configured as described above, the operator can appropriately change the set value in accordance with the order specification. This makes it possible to appropriately cope with various printing members and patterns that change according to order specifications.

In the present invention, preferably, the control device stores setting values for changing the feeding timing of at least one of the first and second corrugated cardboard sheets used in a certain order, and the setting values are stored. When the order of the same specification as the order is performed next, the stored set value is read out, and the speed control pattern of each of the first and second corrugated cardboard sheets according to the set value is applied. It is done.
According to the present invention configured as described above, the setting values used in the past order can be automatically applied when the order of the same specification as this order is subsequently performed. As a result, it is possible to save the operator the trouble of changing the set value each time.

In the present invention, preferably, the control device stores in advance a plurality of velocity control patterns each having a different acceleration region, and among the plurality of velocity control patterns, at least the first and second corrugated cardboard sheets It is configured to select and apply a speed control pattern according to a setting value for changing any one of the feeding timings.
According to the present invention configured as described above, by storing a plurality of speed control patterns in advance, it is possible to rapidly apply the speed control pattern according to the set value, and it is actually used The operator can easily grasp the speed control pattern.

In the present invention, preferably, the control device determines and applies a speed control pattern according to a set value for changing the feed timing of at least one of the first and second cardboard sheets according to a predetermined formula. It is configured to
According to the present invention configured as described above, since the speed control pattern is obtained by calculation, there is no need to store the speed control pattern, and the storage capacity can be reduced.

In the present invention, preferably, the set value is changed by changing the feeding timing of the first corrugated cardboard sheet with respect to the reference feeding position when the first corrugated cardboard sheet is fed at the reference feeding timing. Change the feeding timing of the second corrugated board sheet with respect to the amount by which the feeding position of the corrugated board sheet 1 is to be shifted and the reference feeding position when the second corrugated board sheet is fed at the reference feeding timing This is at least one of the amounts by which the delivery position of the second cardboard sheet should be shifted.
By using such a set value, the feeding timing of at least one of the first and second corrugated cardboard sheets can be appropriately changed.

In the present invention, preferably, the control device is configured to change only the feeding timing of the second corrugated sheet.
According to the present invention configured as described above, the setting value for the operator to change the feeding timing of the cardboard sheet and the setting are compared with the case of changing the feeding timing of the first cardboard sheet. It becomes possible to easily understand the relationship between the transport interval of the two cardboard sheets changed by the value.

  In the present invention, preferably, the corrugated cardboard sheet making machine comprises: the corrugated cardboard sheet feeding device described above; and a plurality of processing devices provided downstream of the feeding direction by the corrugated cardboard sheet feeding device and including at least a printing device. It is good to have.

  According to the present invention, a corrugated sheet feeder for feeding two corrugated sheets during one rotation of a printing cylinder, and a corrugated sheet making machine including the corrugated sheet feeder, the printing plate applied to the printing apparatus When there is a manufacturing error in the wooden mold applied to the member or the die cutter, the processing position by the printing apparatus or the die cutter can be properly adjusted to the desired position for both of the two corrugated sheets.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows the whole structure of the corrugated-cardboard sheet making machine by embodiment of this invention. It is a top view which shows the internal structure below the table of the corrugated-cardboard sheet feeding apparatus by embodiment of this invention. It is an expanded sectional view which looked at the corrugated-cardboard sheet feeding apparatus by embodiment of this invention along the AA line in FIG. It is a figure which shows typically the connection relation of the support mechanism and rocking mechanism of the corrugated-cardboard sheet feeding apparatus by embodiment of this invention. FIG. 7 is a view showing a state in which a swing angle of the swinging member changes in accordance with the rotation of the eccentric member of the swing mechanism in the embodiment of the present invention. It is a block diagram which shows the electric constitution of the corrugated-cardboard sheet making machine by embodiment of this invention. It is explanatory drawing about the roller control pattern number by embodiment of this invention, and a roller control pattern. It is an explanatory view about the basic concept of the contents of control by an embodiment of the present invention. It is explanatory drawing about the basic roller control pattern which is a 1st example of the roller control pattern by embodiment of this invention. It is explanatory drawing about the 2nd example of the roller control pattern by embodiment of this invention. It is explanatory drawing about the operation | movement of grate when the 2nd example of the roller control pattern by embodiment of this invention is applied. It is explanatory drawing about the 3rd example of the roller control pattern by embodiment of this invention. It is explanatory drawing about the operation | movement of grate when the 3rd example of the roller control pattern by embodiment of this invention is applied. It is an explanatory view about the 4th example of a roller control pattern which is a modification of an embodiment of the present invention. It is explanatory drawing about the 5th example of a roller control pattern which is a modification of embodiment of this invention. It is the model which observed the printing cylinder of the printing apparatus from the direction parallel to the axial direction. It is a schematic diagram of the film to which the printing plate member was fixed.

  Hereinafter, a cardboard sheet feeding apparatus and a cardboard sheet making machine according to an embodiment of the present invention will be described with reference to the attached drawings.

[overall structure]
FIG. 1 is a front view showing an overall configuration of a corrugated sheet manufacturing apparatus according to an embodiment of the present invention. Specifically, FIG. 1 shows a cardboard sheet box making machine 1 in which a processing device such as a printing device is prepared for the two-sheet feeding mode.

  In FIG. 1, a corrugated cardboard sheet box making machine 1 feeds a corrugated cardboard sheet feeding device 2 for feeding the stacked corrugated cardboard sheets SH one by one, a printing device 3 for printing on the corrugated cardboard sheets SH, and places creases in the corrugated cardboard sheets SH. And a die cutter 5 for forming a punched portion having a predetermined shape on the cardboard sheet SH.

  The corrugated sheet feeder 2 comprises a table 20. A large number of cardboard sheets SH are loaded on the table 20 between the front gate 21 and the back guide 22. The front gate 21 is disposed such that the corrugated sheet SH is fed out one by one from the gap between the front gate 21 and the table 20. The back guide 22 is configured to be movable relative to the front gate 21 in a direction parallel to the feeding direction FD, and configured to accommodate corrugated cardboard sheets having different sheet lengths in the feeding direction FD. The corrugated sheet feeder 2 includes a large number of feed rollers, a vertically movable grate, and a pair of feed rolls 23 and 24. When the grate descends from the multiple feed rollers, the multiple feed rollers contact the lowermost corrugated sheet SH among the multiple corrugated sheets SH to feed both the corrugated sheets SH one by one. Send to rolls 23, 24. Both feed rolls 23 and 24 feed the corrugated sheet SH one by one to the printing apparatus 3. Both feed rolls 23, 24 are coupled to and driven by the main drive motor MT. The detailed configuration of the cardboard sheet feeding device 2 will be described later.

  The printing apparatus 3 includes two printing units 30 and 31. Each printing unit comprises a printing cylinder, a printing member, an ink applicator, and a press roll. The printing plate member is attached to the outer peripheral surface of the printing cylinder. The ink application device is provided with inking rolls of different colors for each printing unit. The printing apparatus 3 performs two-color printing on the corrugated cardboard sheet SH by both printing units 30 and 31 and supplies the printed corrugated cardboard sheet SH to the creaser slot 4. The printing units 30, 31 are respectively coupled to and driven by the main drive motor MT. The printing cylinders 30A, 31A of both printing units 30, 31 have the same diameter Dp. The two printing members 30B1 and 30B2 are attached to the outer peripheral surface of the printing cylinder 30A so as to have a point-symmetrical positional relationship. Further, the two printing plate members 31B1 and 31B2 are attached to the outer peripheral surface of the printing cylinder 31A so as to be in a positional relationship of point symmetry. The printing members 30B1 and 31B1 perform two-color printing on the first corrugated sheet SH which is first delivered in a processing cycle in which each printing cylinder rotates one turn. The printing members 30B2 and 31B2 perform two-color printing on the second corrugated sheet SH to be fed out next in the processing cycle.

  The creaser slot 4 includes a creaser unit 40 and two slotter units 41 and 42. The creaser unit 40 includes a pair of creased rolls disposed one above the other. Each slotter unit includes an upper slotter to which the slotter blade is attached and a lower slotter in which a groove engageable with the slotter blade is formed. The creaser 4 applies creases and grooves to the corrugated cardboard sheet SH by the creaser unit 40 and the both throttle units 41 and 42 to form a joint allowance, and supplies the corrugated cardboard sheet SH subjected to these processes to the die cutter 5 Do. The creaser unit 40 and both slotter units 41 and 42 are respectively connected to and driven by the main drive motor MT. Two slotter blades 41A1 and 41A2 are attached to the outer peripheral surface of the upper slotter of the slotter unit 41. Also, two slotter blades 42A1 and 42A2 are attached to the outer peripheral surface of the upper slotter of the slotter unit 42. The slotter blades 41A1 and 41A2 perform grooving and the like on the front end portion and the rear end portion of the first cardboard sheet SH which is first delivered in the processing cycle. The slotter blades 42A1 and 42A2 perform grooving and the like on the front end portion and the rear end portion of the second corrugated sheet SH to be fed out next in the processing cycle.

  The die cutter 5 includes a die cylinder 50 and an anvil cylinder 51 across the transport path. Two punching dies 52A1 and 52A2 are attached to a plate-like body (corresponding to the above-described wood type) such as a plywood veneer, and the plate-like body is wound around the outer peripheral surface of the die cylinder 50. Specifically, two punching dies 52A1 and 52A2 are attached to the outer peripheral surface of the die cylinder 50 so as to be in point-symmetrical positional relationship. The punching die 52A1 applies a punching process to the first corrugated sheet SH which is first delivered in the processing cycle. The punching die 52A2 applies a punching process to the second corrugated sheet SH to be delivered next in the processing cycle. The punching dies 52A1 and 52A2 can be replaced with punching dies of a punching pattern according to the order at the time of order change. The die cylinder 50 and the anvil cylinder 51 are respectively connected to and driven by the main drive motor MT.

  Although FIG. 1 shows the cardboard sheet box making machine 1 prepared for the two sheet feeding mode, the cardboard sheet box forming machine 1 can also perform the one sheet feeding mode. When performing the one-sheet feeding mode, in the printing device 3, if one printing plate member attached to the outer peripheral surface of the printing cylinder 30A and one printing plate member attached to the outer peripheral surface of the printing cylinder 31A are used Well, in the creaser 4, one slotter blade attached to the outer peripheral surface of the upper slotter of the slotter unit 41 and one slotter blade attached to the outer peripheral surface of the upper slotter of the slotter unit 42 may be used. One punching die attached to the outer peripheral surface of the die cylinder 50 may be used.

[Composition of corrugated sheet feeder]
The detailed configuration of the cardboard sheet feeding device 2 will be described with reference to FIGS. 2 to 5. 2 is a plan view showing the internal configuration of the corrugated sheet feeder 2 below the table 20, and FIG. 3 is a sectional view of the corrugated sheet feeder 2 cut along the line A-A shown in FIG. is there. In FIG. 2, the corrugated sheet feeder 2 includes a front frame 60, a rear frame 61, and a pair of intermediate frames 62, 63 disposed between the two frames 60, 61. The motor mounting plate 64 is fixed to the front of the front frame 60, and the bearing mounting plate 65 is fixed to the rear of the front frame 60. The motor mounting plate 66 is fixed to the rear of the rear frame 61, and the bearing mounting plate 67 is fixed to the front of the rear frame 61. The left frame 68 and the right frame 69 extend in the front-rear direction and are fixed to the two middle frames 62, 63, respectively. In FIG. 3, the lower frame 70 is fixed to the left frame 68 and the right frame 69, respectively.

  The lift motor 80 is composed of an AC servomotor and is fixed to the motor mounting plate 64. A pair of bearings 81 and 82 are respectively fixed to the bearing mounting plate 65, and rotatably support the intermediate drive shaft 83. The rotary shaft of the lift motor 80 is connected to the intermediate drive shaft 83 by a connector 84. An encoder 85 is coupled to the rotation shaft of the lift motor 80.

  The first roller motor 90 and the second roller motor 91 are composed of an AC servomotor and fixed to the motor mounting plate 64 respectively. A pair of bearings 92, 93 are respectively fixed to the bearing mounting plate 65, and rotatably support the first roller drive shaft 94. The rotating shaft of the first roller motor 90 is connected to the first roller drive shaft 94 by a connecting member 95. A pair of bearings 96, 97 are respectively fixed to the bearing mounting plate 65 and rotatably support the second roller drive shaft 98. The rotating shaft of the second roller motor 91 is connected to the second roller drive shaft 98 by a connecting member 99. The encoders 100 and 101 are connected to the rotation shaft of the first roller motor 90 and the rotation shaft of the second roller motor 91, respectively.

  The third roller motor 102 and the fourth roller motor 103 are composed of an AC servomotor and fixed to the motor mounting plate 66 respectively. A pair of bearings 104 and 105 are respectively fixed to the bearing mounting plate 67, and rotatably support the third roller drive shaft 106. The rotating shaft of the third roller motor 102 is connected to the third roller drive shaft 106 by a connecting member 107. A pair of bearings 108 and 109 are respectively fixed to the bearing mounting plate 67, and rotatably support the fourth roller drive shaft 110. The rotating shaft of the fourth roller motor 103 is connected to the fourth roller drive shaft 110 by a connecting member 111. The encoders 112 and 113 are connected to the rotation shaft of the third roller motor 102 and the rotation shaft of the fourth roller motor 103, respectively.

  In FIG. 2, first to fourth roller support shafts 120 to 123 extend in the front-rear direction in parallel with each other, and are rotatably supported by the two intermediate frames 62 and 63, respectively. A number of first feed rollers 124 are fixed to the first roller support shaft 120, and a number of second feed rollers 125 are fixed to the second roller support shaft 121. A number of third feed rollers 126 are fixed to the third roller support shaft 122, and a number of fourth feed rollers 127 are fixed to the fourth roller support shaft 123. The first to fourth feed rollers 124 to 127 are arranged in a zigzag so as not to interfere with each other. The feed rollers 124 to 127 have the same diameter Dr.

  The first roller drive shaft 94 is connected to the first roller support shaft 120 by a connector 128, and the second roller drive shaft 98 is connected to the second roller support shaft 121 by a connector 129. The third roller drive shaft 106 is connected to the third roller support shaft 122 by a connecting member 130, and the fourth roller drive shaft 110 is connected to the fourth roller support shaft 123 by a connecting member 131.

  The corrugated sheet feeder 2 includes a motion conversion mechanism 140. The motion conversion mechanism 140 is a mechanism that converts the rotation of the lift motor 80 in one direction into the lift motion of the grate 141. In FIG. 2, a number of gratings are arranged in the front-rear direction so as to cover an area in which a number of feeding rollers 124 to 127 are arranged. Only one grate 141 is shown in FIG. 2 and the other grates are not shown.

[Detailed configuration of motion conversion mechanism]
The motion conversion mechanism 140 includes a support mechanism 142 that supports the grate 141 so as to be able to move up and down, and a swing mechanism 143. The swing mechanism 143 converts rotation of the lift motor 80 in one direction into swing motion and transmits the swing motion to the support mechanism 142. In the present embodiment, one grate 141 is supported by two support mechanisms 142 disposed one behind the other as shown in FIG. Both support mechanisms have the same configuration.

  The configuration of the support mechanism 142 will be described with reference to FIG. The support mechanism 142 includes a pair of connecting blocks 150 and 151, a pair of two-arm levers 152 and 153, and a connecting rod 154. In FIG. 3, the left mounting member 155 is fixed to the right side surface of the left frame 68, and the right mounting member 156 is fixed to the left side surface of the right frame 69. The left two-arm lever 152 is pivotably attached to the left attachment member 155 by a pivot shaft 157. The right two-arm lever 153 is pivotably attached to the right attachment member 156 by a pivot shaft 158.

  In FIG. 3, the grate 141 is disposed horizontally above the four roller support shafts 120 to 123 and in proximity to these roller support shafts. A left connection block 150 is fixed to the left end of the grate 141 and extends downward. The right connection block 151 is fixed to the right end of the grate 141 and extends downward. One arm 152 A of the left two-arm lever 152 is connected to the lower end of the left connection block 150 by the connection pin 159. One arm 153 </ b> A of the right two-arm lever 153 is connected to the lower end of the right connection block 151 by the connection pin 160.

  A connecting rod 154 is disposed horizontally below the four roller support shafts 120-123. The right end of the connecting rod 154 extends to the right through a through hole 161 formed in the right frame 69. The left end of the connecting rod 154 is connected to the other arm 152 B of the left two-arm lever 152 by the connecting pin 162. The middle portion of the connecting rod 154 adjacent to the right frame 69 is connected to the other arm 153 B of the two-arm lever 153 on the right side by the connecting pin 163.

  The configuration of the swing mechanism 143 will be described with reference to FIGS. 2 to 5. The swing mechanism 143 includes a lift drive shaft 170, an eccentric member 171, a swing member 172, and a lift connecting shaft 173.

  In FIG. 2, the auxiliary frame 174 is fixed to the left side surface of the left intermediate frame 62 at predetermined intervals by a plurality of spacers 175. The elevation drive shaft 170 is rotatably supported by the auxiliary frame 174 by means of a bearing 176. The lifting drive shaft 170 is connected to the intermediate drive shaft 83 by a connecting member 177.

  FIG. 4 is a view schematically showing a connection relationship between the support mechanism 142 and the swing mechanism 143, as viewed from the left side of the auxiliary frame 174. As shown in FIG. In FIG. 4, the eccentric member 171 is fixed to the elevation drive shaft 170. The eccentric member 171 is formed in a circular shape, and has a rotational axis eccentric from the rotational axis of the elevation drive shaft 170. The swinging member 172 is fixed to the lift connecting shaft 173 and can swing around the lift connecting shaft 173. The swinging member 172 has a substantially rectangular fitting groove 178. The fitting groove 178 has a pair of contact surfaces 178A, 178B facing each other. The two contact surfaces 178A and 178B are formed extending in a direction parallel to a line connecting the center of the outer circle of the eccentric member 171 and the rotation center of the elevation connecting shaft 173. The outer peripheral surface of the eccentric member 171 always contacts both contact surfaces 178A and 178B of the fitting groove 178.

  In FIG. 2, the elevation connection shaft 173 is rotatably supported on the right side surface of the right side frame 69 by a plurality of bearings 179. The lift connecting shaft 173 is disposed in parallel with the roller support shafts 120-123. The plurality of connection members 180 are fixed to the elevating connection shaft 173 at positions respectively corresponding to the plurality of support mechanisms 142. Each connecting member 180 is connected by the connecting pin 181 to the right end of the connecting rod 154 of the corresponding support mechanism 142 as shown in FIG.

  5A to 5C show states in which the swing angle of the swinging member 172 changes as the eccentric member 171 rotates. In FIG. 5, the reference angular position RP is an angular position that coincides with a line connecting the rotation center of the eccentric member 171 and the rotation center of the elevation connecting shaft 173. The rotation center of the eccentric member 171 is also the rotation center of the elevation drive shaft 170. The angular position of the swinging member 172 shown in FIG. 5A is a position rotated clockwise from the reference angular position RP by a predetermined angle θs. In the angular position of the swinging member 172 shown in FIG. 5A, the grate 141 is positioned at the lowermost and lowest position. The angular position of the swinging member 172 shown in FIG. 5C is a position rotated counterclockwise from the reference angular position RP by a predetermined angle θs. In the angular position of the swinging member 172 shown in FIG. 5C, the grate 141 is positioned at the uppermost and uppermost position. The angular position of the swinging member 172 shown in FIG. 5 (B) is a position that matches the reference angular position RP. In the angular position of the swinging member 172 shown in FIG. 5B, the grate 141 is positioned at an intermediate position between the lowermost position and the uppermost position. In the present embodiment, the predetermined angle θs is set to an angle of 6 °. Further, in the present embodiment, when the swinging member 172 swings to the angular position shown in FIG. 5A, the right end portion of the connecting rod 154 is elastically deformed with a slight downward movement of the connecting pin 181. Configured to

[Configuration of rotational position sensor]
A rotational position sensor 190 is provided to detect a predetermined rotational position of the elevation drive shaft 170. The rotational position sensor 190 includes an optical sensor 191 and a light shield 192. The optical sensor 191 has a known configuration including a light emitting unit and a light receiving unit, and is fixed to the bearing mounting plate 65 as shown in FIG. The light shield 192 is fixed to an intermediate drive shaft 83 connected to the elevating drive shaft 170 as shown in FIG. The light blocking member 192 blocks the light from the light emitting portion of the optical sensor 191 every time the elevation drive shaft 170 reaches a predetermined rotational position.

  In FIG. 4, the optical sensor 191 and the light shield 192 are shown by a two-dot chain line. The rotational position of the light shielding body 192 shown in FIG. 4 is the rotational position immediately before the light shielding body 192 passes the optical sensor 191. In the state shown in FIG. 4, the grate 141 is located at the height before reaching the uppermost position. In the present embodiment, the rotational position sensor 190 generates a detection signal when the elevating drive shaft 170 rotates to a predetermined rotational position and the grate 141 reaches the uppermost position.

[Electrical configuration]
Next, with reference to FIG. 6, the electrical configuration of the cardboard sheet box making machine 1 according to the embodiment of the present invention will be described. FIG. 6 is a block diagram showing a basic electrical configuration of the cardboard sheet box making machine 1 according to the embodiment of the present invention.

  In order to generally control the processing of the cardboard sheet SH in the cardboard sheet making machine 1, a high-order management apparatus 200 and a low-order management apparatus 210 are provided. In the present embodiment, the upper level management device 200 stores a production control plan for executing a large number of orders in a predetermined order. The upper management device 200 sends, to the lower management device 210, control instruction information on the sheet conveyance speed, the size of the cardboard sheet SH, and the number of processed sheets for each order.

  The lower management apparatus 210 controls the operation of the drive unit such as the main drive motor MT according to the control command information sent from the upper management apparatus 200, counts the number of processed cardboard sheets SH, and sends it to the upper management apparatus 200 It is a device that performs management control of The low-order management device 210 is connected to the program memory 220 and the working memory 230, and constitutes a computer that controls the cardboard sheet box making machine 1 together with these memories. The program memory 220 is a control program for controlling the entire cardboard sheet box making machine 1, a pattern creation program for creating a grate order elevating pattern according to the sheet length of each order and the feeding mode, and predetermined set values And so on.

  In particular, the program memory 220 stores setting values for changing the feeding timing of the even-numbered corrugated sheet SH in the two-sheet feeding mode. Specifically, this set value changes the feeding timing with respect to the reference feeding position when the even-numbered corrugated sheet SH is fed at the reference feeding timing, and the feeding position of the sheet is changed. This corresponds to the amount to be shifted (in the following, this set value is referred to as "set amount of shift amount"). The work memory 230 is a memory that temporarily stores various information and calculation processing results sent from the upper management apparatus 200 when executing the control program, and also temporarily stores a feeding mode designation signal from the operation panel 240 and the like. is there.

  The lower management device 210 is connected to the operation panel 240. Operation panel 240 includes a feed button 241, an order end button 242, a feed mode designation key 243, and an information display unit 244. The feeding button 241 is operated to start feeding of the cardboard sheet SH by the cardboard sheet feeding device 2. When the feed button 241 is operated, the operation panel 240 generates a feed start signal. The order end button 242 is operated to end the currently executed order. The feed mode designation key 243 is operated to designate a feed mode of either the single sheet feed mode or the double sheet feed mode. The operation panel 240 generates a feed mode designation signal indicating the designated feed mode. The information display unit 244 displays information such as numbers or symbols indicating the type of the designated feeding mode. The operation panel 240 is configured as a touch panel that can display various information by the information display unit 244 and can receive an input from the operator when the operator touches the screen. The operation panel 240 corresponds to an example of the “input device” in the present invention.

  Further, the information display unit 244 displays a screen (hereinafter referred to as “shift amount setting screen”) for causing the operator to input the above-described shift amount setting value. In one example, the information display unit 244 displays the + (plus) button and the-(minus) button on the shift amount setting screen, and the operator inputs the shift amount setting value using these + button and-button. It can be done. In this example, the shift amount setting value is increased by a predetermined amount each time the worker presses the + button, and the shift amount setting value is decreased by a predetermined amount each time the worker presses the − button. It has become. Thus, the operator can finely adjust the shift amount setting value. In another example, the information display unit 244 displays numeric keys on the shift amount setting screen so that the operator can input shift amount setting values using the number keys. In this example, the number input by the operator using the numeric keys is applied as the shift amount setting value. As a result, the target shift amount setting value can be input at once. As described above, the shift amount setting value input using the shift amount setting screen is stored in the program memory 220 and read by the lower management apparatus 210.

  The low-order management device 210 is connected to the drive control device 250, the print control device 251, the creaser control device 252, the die cutter control device 253, and the roller motor control device 254, respectively. The drive control device 250 controls the drive and stop of the main drive motor MT and the rotation speed thereof in accordance with the control command information from the lower level management device 210. The rotational speed of the main drive motor MT is controlled in accordance with the sheet conveyance speed in the control command information. The print control device 251 controls the operation of the printing units 30 and 31 in accordance with control command information from the lower management device 210. The creaser controller 252 controls the operation of the creaser unit 40 and controls the operation of the slotter units 41 and 42 in accordance with the control command information from the subordinate manager 210. The die cutter control device 253 controls the operation of the die cutter 5 in accordance with the control command information from the lower-level management device 210.

  The rotational position sensor 190 is connected to the subordinate manager 210. The subordinate management device 210 sends control command information including a feeding start command to the roller motor control device 254 when the feeding button 241 is operated. Also, each time the subordinate management device 210 receives a feed start command, it sends control command information including a synchronization command to the roller motor control device 254 each time it receives a detection signal from the rotational position sensor 190.

  The roller motor control device 254 controls a series of operations of the motion controller 260 in accordance with the control command information from the low-level management device 210. A pattern number setting memory 255 is connected to the roller motor controller 254, and a roller control pattern memory 261 is connected to the motion controller 260. The roller control pattern memory 261 has a basic roller control pattern predetermined for the one-sheet feeding mode and a two-sheet feeding mode in order to control the rotational speeds of the roller motors 90, 91, 102, and 103. And storing a plurality of roller control patterns including a predetermined basic roller control pattern. The pattern number setting memory 255 stores a correspondence table of the shift amount setting value and the management number of the roller control pattern applied in the two-sheet feeding mode, that is, the roller control pattern number.

  Here, the roller control pattern number and the roller control pattern (including the basic roller control pattern) will be specifically described with reference to FIGS. 7 (A) and 7 (B). FIG. 7A shows the roller control pattern numbers stored in the pattern number setting memory 255. As shown in FIG. 7A, the pattern number setting memory 255 stores the roller control pattern number associated with each of a plurality of shift amount setting values determined in advance. For example, the pattern number setting memory 255 sets 21 shift amount setting values of -5, -4.5, ..., 0, +0.5, ..., +4.5, +5 mm (that is, ranges from -5 mm to +5 mm). A correspondence table of numerical values cut at intervals of 0.5 mm) and roller control pattern numbers 0 to 20 associated with these shift amount setting values is stored.

  On the other hand, FIG. 7B shows a roller control pattern stored in the roller control pattern memory 261. As shown in FIG. 7B, the roller control pattern memory 261 stores the roller control pattern associated with each of the plurality of roller control pattern numbers applied in the two-sheet feeding mode. The roller control pattern is a speed control pattern for controlling the rotational speed of the roller motors 90, 91, 102, 103, and in this speed control pattern, the machine rotational angle (rotational angle of the print cylinders 30A, 31A) is used. The ratio (speed ratio) of the peripheral speed of the feed rollers 124 to 127 to the peripheral speed of the print cylinders 30A and 31A is associated with each other. More specifically, in the two-sheet feeding mode, this roller control pattern is a speed control pattern applied to the first (odd-numbered) cardboard sheet SH to be fed first, and the second sheet to be fed next And a speed control pattern applied to the (even-numbered) cardboard sheet SH. The speed control pattern applied to the first cardboard sheet SH is the pattern of the former stage in the roller control pattern, and the speed control pattern applied to the second cardboard sheet SH is the pattern of the latter stage in the roller control pattern. For example, the roller control pattern memory 261 stores 21 types of roller control patterns associated with the 0 to 20th roller control pattern numbers. The roller control pattern of roller control pattern No. 10 corresponding to the shift amount of 0 mm is a basic roller control pattern serving as a reference of the other 20 types of roller control patterns. The details of the roller control pattern will be described later.

  Referring back to FIG. 6, when the lower management device 210 receives control command information for preparing execution of the processing order from the upper management device 200, the lower management device 210 instructs the roller motor control device 254 to prepare an order. Send control command information including. The roller motor control device 254 reads the roller control pattern number from the pattern number setting memory 255 when the control command information including the order preparation command is received from the subordinate management device 210, and transmits the roller control pattern number to the motion controller 260. send. In particular, in the two-sheet feeding mode, the roller motor control device 254 acquires the shift amount setting value to be applied, which has been sent from the subordinate management device 210, and the roller control pattern number corresponding to this shift amount setting value. To the motion controller 260. Further, the roller motor control device 254 sends a motion activation command to the motion controller 260 in accordance with the feeding start command or the synchronization command in the control command information from the lower level management device 210.

  The motion controller 260 incorporates a motion CPU and is connected to the program memory 262. The program memory 262 stores in advance a pattern creation program for creating a speed control command. The motion controller 260 reads the roller control pattern corresponding to the roller control pattern number sent from the roller motor control device 254 with reference to the roller control pattern memory 261. Then, the motion controller 260 creates a speed control command based on the sheet conveyance speed sent from the lower management device 210 and the read roller control pattern, using the pattern creation program stored in the program memory 262. It sends to the drive control circuit 264. For example, the speed control command is a command including a pattern corresponding to a time change of the rotational speed applied to the roller motors 90, 91, 102, 103. The motion controller 260 sends a speed control command to the drive control circuit 264 when receiving a motion start command from the roller motor controller 254. The basic configuration of the motion controller 260 is disclosed in, for example, JP-A-2006-72399, JP-A-11-272312, and JP-A-5-50329, and is generally known. I omit it.

  The drive control circuit 264 receives the speed control command from the motion controller 260 and the rotation pulse from the encoder group 100, 101, 112, 113, and the rotation speed of the roller motor 90, 91, 102, 103, its rotation and Control the stop and. That is, the drive control circuit 264 controls the power supplied to each roller motor so that the rotational speed of each roller motor becomes a rotational speed according to the speed control command during a predetermined control cycle. Due to the rotation of the roller motors 90, 91, 102, and 103, the feed rollers 124 to 127 in FIG. 3 rotate counterclockwise as indicated by arrows. In the present embodiment, each encoder has a configuration capable of generating a large number of rotation pulses, for example, a number of pulses of 1000 pulses / msec or more during a predetermined control period.

  The low order management device 210, the roller motor control device 254, the motion controller 260, and the drive control circuit 264 correspond to an example of the "control device" in the present invention.

  Next, the grate basic lift pattern memory 270 and the grate order lift pattern memory 271 are connected to the lower management device 210, respectively. The grate basic lift pattern memory 270 controls the rotational speed of the lift motor 80 according to the minimum sheet length for the single sheet feed mode, and the grate basic lift pattern and the single sheet feed mode. For the 2nd sheet feeding mode, the 2nd sheet feeding mode, the 2nd sheet feeding mode and the 2nd sheet feeding mode, which are predetermined according to the minimum sheet length for the 2-sheet feeding mode. And store the basic basic lift pattern, which is predetermined according to the maximum sheet length. The grate order lift pattern memory 271 temporarily stores the grate order lift pattern.

  The lower-level management device 210 executes the pattern creation program stored in the program memory 220 when receiving the control command information for preparing execution of the machining order from the higher-level management device 200. By execution of the pattern creation program, the lower management apparatus 210 determines the sheet length of the processing order based on the grate basic lift pattern of any of the above four grate basic lift patterns stored in the grate basic lift pattern memory 270. A grate order elevating pattern according to is created and temporarily stored in the gratorder elevating pattern memory 271. Thereafter, the low-order management device 210 reads the grate order elevating pattern from the grate order elevating pattern memory 271 and generates a pattern creation command. The pattern creation command includes the sheet transport speed in the control command information from the upper level management device 200 and the grate order elevating pattern.

  The lower management apparatus 210 receives a feed start signal from the operation panel 240 when the feed button 241 is operated, and sends control command information including a feed start command to the motion controller 280 as a motion start command. Also, each time the lower-level management device 210 receives a feed start command, it sends control command information including a synchronization command to the motion controller 280 as a motion start command each time it receives a detection signal from the rotational position sensor 190.

  A motion controller 280 is connected to the subordinate manager 210. The motion controller 280 incorporates a motion CPU, and is connected to a program memory 281 storing a program, and a great speed control pattern memory 282. The program memory 281 stores in advance a pattern creation program for creating a great lifting speed control pattern. The great speed control pattern memory 282 temporarily stores the great lifting speed control pattern created by the motion controller 280. The great lift speed control pattern includes a series of multiple speed control commands to command the rotational speed of the lift motor 80. The motion controller 280 executes the pattern creation program when receiving the pattern creation command from the lower-level management device 210. By executing the pattern creation program, the motion controller 280 creates a grate elevating speed control pattern based on the sheet conveyance speed and the grate order elevating pattern in the pattern creation command, and temporarily stores it in the grate speed control pattern memory 282.

  The motion controller 280 reads out each speed control command from the control pattern memory 282 every predetermined control cycle when receiving a motion start command from the lower level management device 210, and sends it to the drive control circuit 283. Even if the predetermined control cycle is 1 msec, for example, and the sheet conveying speed is set to the highest sheet conveying speed in the corrugated sheet making machine 1, the motion controller 280 ensures processing such as reading of the speed control command. It is a period that can be implemented. The basic configuration of the motion controller 280 is the same as that of the motion controller 260.

  The drive control circuit 283 receives the speed control command from the motion controller 280 and the rotation pulse from the encoder 85, and controls the rotation speed of the lift motor 80 and its rotation and stop. That is, the drive control circuit 283 controls the power supplied to the lift motor 80 such that the rotation speed of the lift motor 80 becomes the rotation speed according to the speed control command during a predetermined control cycle. While the rotary shaft of the lift motor 80 rotates once, the eccentric member 171 rotates clockwise as shown by the arrows in FIGS. 4 and 5, and the grate 141 performs one lift movement. In the present embodiment, the encoder 85 has a configuration capable of generating a large number of rotation pulses, for example, a number of pulses of 1000 pulses / msec or more during a predetermined control period.

[Roller control pattern]
Next, the roller control pattern applied in the embodiment of the present invention will be specifically described. As described above, the roller control pattern is stored in the roller control pattern memory 261 (see FIGS. 6 and 7B).

  First, with reference to FIG. 8, in the embodiment of the present invention, a basic concept of controlling the feeding rollers 124 to 127 of the corrugated cardboard sheet feeding device 2 using various roller control patterns will be described. In this embodiment, even if there is a manufacturing error in the printing device 3 or the die cutter 5, the processing position by the printing device 3 or the die cutter 5 is set to a desired position for both of the two corrugated sheets SH fed in the two sheet feeding mode. The roller control pattern to be applied is changed so as to change the feeding timing for feeding the even-numbered corrugated sheet SH from the corrugated sheet feeder 2 so as to properly align.

  FIGS. 8A and 8B are schematic views of the printing cylinder 30A of the printing apparatus 3 as observed from the direction parallel to the axial direction. FIG. 8A is an explanatory view of control contents performed when the arrangement interval L2 of the printing plate members 30B1 and 30B2 applied to the printing cylinder 30A is narrower than the correct arrangement interval due to a manufacturing error. First, rotational phase adjustment of the printing cylinder 30A is performed so that the printing position on the odd-numbered corrugated cardboard sheet SH1 by the printing member 30B1 matches the desired position. By such rotational phase adjustment, the printing position on the odd-numbered corrugated cardboard sheet SH1 by the printing plate member 30B1 comes to match the desired position, but the arrangement interval L2 of the printing plate members 30B1 and 30B2 is correct due to the manufacturing error Since the arrangement interval deviates, the printing position on the even-numbered corrugated cardboard sheet SH2 by the printing plate member 30B2 does not match the desired position.

  In particular, in the example shown in FIG. 8A, since the arrangement interval L2 of the printing plate members 30B1 and 30B2 is narrowed due to a manufacturing error, the even-numbered corrugated cardboard sheet SH2 by the printing plate member 30B2 after rotational phase adjustment. The upper printing position is shifted to the feeding direction FD side. In order to cope with this, in the present embodiment, the feeding timing from the corrugated sheet feeder 2 is made earlier than usual for the even-numbered corrugated sheet SH2. That is, in this embodiment, with respect to the basic roller control pattern of the roller control pattern No. 10, the feeding timing of the even-numbered corrugated sheet SH2 can be advanced earlier. Apply one of the roller control patterns. By doing this, the conveyance interval of the even-numbered corrugated sheet SH2 with respect to the odd-numbered corrugated sheet SH1 becomes short. As a result, even when the arrangement interval L2 of the printing plate members 30B1 and 30B2 is narrowed due to a manufacturing error, the even-numbered corrugated sheet SH2 reaches the printing device 3 early, so the printing plate of the printing device 3 is printed. It becomes possible to properly align the printing position on the even-numbered corrugated cardboard sheet SH2 by the member 30B2 with a desired position.

  On the other hand, FIG. 8B is an explanatory view of control contents performed when the arrangement interval L3 of the printing plate members 30B1 and 30B2 is wider than the correct arrangement interval due to a manufacturing error. In this case, after rotational phase adjustment for aligning the printing position on the odd-numbered corrugated cardboard sheet SH1 by the printing plate member 30B1 to a desired position, printing on the even-numbered corrugated cardboard sheet SH2 by the printing plate member 30B2 The position is shifted to the opposite side to the feeding direction FD. In order to cope with this, in the present embodiment, for the even-numbered corrugated sheet SH2, the feeding timing from the corrugated sheet feeder 2 is made later than usual. That is, in this embodiment, with respect to the basic roller control pattern of the roller control pattern No. 10, the feeding timing of the even-numbered corrugated sheet SH2 can be delayed, and the roller control pattern Nos. 11 to 20 Apply one of the roller control patterns. By doing this, the conveyance interval of the even-numbered corrugated sheet SH2 with respect to the odd-numbered corrugated sheet SH1 becomes long. As a result, even when the arrangement interval L3 of the printing plate members 30B1 and 30B2 is wide due to a manufacturing error, the even-numbered corrugated sheet SH2 reaches the printing device 3 with delay, so the printing plate of this printing device 3 is printed It becomes possible to properly align the printing position on the even-numbered corrugated cardboard sheet SH2 by the member 30B2 with a desired position.

  Here, the roller control pattern to be applied to change the feeding timing of the cardboard sheet SH in order to cope with the manufacturing error is determined in accordance with the shift amount setting value. That is, as described with reference to FIGS. 6, 7A and 7B, the roller motor control device 254 refers to the pattern number setting memory 255 to set the shift amount acquired from the lower management device 210. The roller control pattern number corresponding to the value is determined, and the motion controller 260 refers to the roller control pattern memory 261 to determine the roller control pattern corresponding to the roller control pattern number acquired from the roller motor control device 254. On the other hand, the shift amount setting value is typically input by the operator via the operation panel 240 using the displayed shift amount setting screen. As described above, the shift amount setting value is the delivery position of the sheet by changing the delivery timing with respect to the reference delivery position when the even-numbered corrugated sheet SH2 is delivered at the reference delivery timing. Corresponds to the amount to be shifted.

  Specifically, the worker determines the shift amount setting value in the following procedure. First, the operator feeds out two cardboard sheets SH (SH1, SH2) from the cardboard sheet feeding device 2 to perform trial processing, and the processing positions of the two cardboard sheets SH after this trial processing Measure with the measure. Specifically, the operator measures the amount by which the processing position on the cardboard sheet SH, in particular, the printing position by the printing device 3 and the punching position by the die cutter 5 deviate from a desired position. Thereafter, the operator rotates the printing cylinders 30A and 31A of the printing apparatus 3 and the die cylinder 50 of the die cutter 5 so that the processing position on the first (odd-numbered) cardboard sheet SH1 matches the desired position. Adjust the phase. In this case, the operator adjusts the rotational phase by operating the operation panel 240. Then, the operator sets the processing position on the second (even-numbered) corrugated sheet SH2 to a desired position in a state where the processing position on the first corrugated sheet SH1 is aligned with the desired position by rotational phase adjustment. The amount deviated from the position is applied as the shift amount setting value. Basically, an amount obtained by subtracting the displacement amount of the first cardboard sheet SH1 measured after the trial processing from the displacement amount of the second cardboard sheet SH2 measured after the trial processing is set as the displacement amount setting value. It will be applied.

  For example, when a displacement of 2 mm is measured for the first cardboard sheet SH1 and a displacement of 3 mm is measured for the second cardboard sheet SH2 in trial processing, the operator rotates 2 mm. The phase adjustment is performed, and 1 mm is set as the shift amount setting value. Further, as described above, when 21 values of -5, -4.5, ..., 0, +0.5, ..., +4.5, +5 mm are prepared as shift amount setting values (Fig. 7A) If the measured amount of deviation does not match these values), the value closest to the amount of deviation among the prepared values may be set as the deviation amount setting value. For example, when a shift amount of 0.3 mm is measured, a shift amount setting value of +0.5 mm may be set.

  Note that the setting of the shift amount setting value is not limited to setting in trial processing, and the shift amount setting value may be set during main production after trial processing. That is, the operator may newly set the shift amount setting value by looking at the processing position of the cardboard sheet SH obtained during the main production.

  Further, as described above, the present invention is not limited to setting the shift amount setting value by the operator, and the shift amount set value may be set on the apparatus side. For example, the upper management apparatus 200 stores the shift amount setting value used in a certain order in association with the order information related to the order, and when the same specification order as the order is next performed, The management apparatus 210 may automatically set the shift amount setting value included in the order information sent from the upper management apparatus 200. In one example, in the first order, the mishandling amount setting value used in this order is stored at the end of the order, and when this order is performed next (second and subsequent orders), it is stored at the first time. The setting amount of the shift amount may be set automatically. Further, the shift amount setting value stored in this manner may be updated according to the operation of the operation panel 240 by the operator. That is, when the operator performs a predetermined operation on operation panel 240 during order execution, the shift amount set value stored in association with the order information by the shift amount set value used in the order Basically, the values stored in the initial order may be updated.

  Next, specific examples of the roller control pattern applied in the embodiment of the present invention will be described with reference to FIGS. 9 to 13.

  FIG. 9 is an explanatory view of a basic roller control pattern which is a first example of a roller control pattern according to the embodiment of the present invention. In FIG. 9, the horizontal axis indicates the rotation angle (°) of the printing cylinders 30A and 31A, and the vertical axis indicates the speed ratio (%) of the peripheral speed of the feed rollers 124 to 127 to the peripheral speed of the printing cylinders 30A and 31A. Is shown. The basic roller control pattern is a speed control pattern in which the feeding timing of the cardboard sheet SH is not changed, and is used at a normal time (that is, when there is no manufacturing error). That is, the basic roller control pattern is a reference speed control pattern that is applied when the shift amount setting value is 0 mm (the roller control pattern number is 10).

  First, the configuration of the roller control pattern common to various roller control patterns will be described. As shown in FIG. 9, the roller control pattern includes the speed control pattern P1 for delivering the odd-numbered corrugated sheet SH1, and the even number And a speed control pattern P2 for delivering the first corrugated sheet SH2. The speed control patterns P1 and P2 respectively indicate acceleration regions R11 and R21 for accelerating the feed rollers 124 to 127 from the rotation stop state, and the feed rollers 124 to 124 after the acceleration regions R11 and R21. 127, constant speed areas R12 and R22 for rotating at a constant speed, deceleration areas R13 and R23 for decelerating the rotation of the feeding rollers 124 to 127 after the constant speed areas R12 and R22, and the deceleration areas After R13 and R23, stop areas R14 and R24 for stopping the rotation of the feed rollers 124 to 127 are included.

  In the basic roller control pattern shown in FIG. 9, the acceleration region R11 is in the range of 0 ° to 65 ° and the constant speed region R12 is in the range of 65 ° to 140 ° in the speed control pattern P1 of the odd cardboard sheet SH1. The deceleration region R13 is in the range of 140 ° to 170 °, and the stop region R14 is in the range of 170 ° to 180 °. In addition, in the speed control pattern P2 of the even-numbered corrugated cardboard sheet SH2, the acceleration region R21 is in the range of 180 ° to 245 °, the constant velocity region R22 is in the range of 245 ° to 320 °, and the deceleration region R23 is It is the range of 320 degrees-350 degrees, and stop field R24 is the range of 350 degrees-360 degrees.

  The basic roller control pattern is applied when the shift amount setting value is 0 mm. In this basic roller control pattern, as shown in FIG. 9, the speed control pattern P1 of the odd-numbered cardboard sheet SH1 and The speed control pattern P2 of the even-numbered corrugated cardboard sheet SH2 has the same shape. Further, in the basic roller control pattern, the timing to start acceleration of the odd-numbered corrugated sheet SH1 is the rotation angle 0 °, which is the start position of the acceleration region R11, to accelerate the even-numbered corrugated sheet SH2. The timing of the start is a rotation angle of 180 ° which is the start position of the acceleration region R21. That is, the acceleration start timing of the even-numbered corrugated sheet SH2 is exactly half the rotation angle of one rotation of the printing cylinders 30A and 31A, and uniquely corresponds to the acceleration start timing of the odd-numbered corrugated sheet SH1. It is time to do it. Hereinafter, such a rotation angle of 180 ° is used as a reference acceleration start timing for shifting the acceleration start timing of the even-numbered corrugated sheet SH2.

  FIG. 10 is an explanatory view of a second example of the roller control pattern according to the embodiment of the present invention. Also in FIG. 10, the horizontal axis indicates the rotation angle (°) of the printing cylinders 30A and 31A, and the vertical axis indicates the speed ratio (%) of the peripheral speed of the feeding rollers 124 to 127 to the peripheral speed of the printing cylinders 30A and 31A. Is shown. The roller control pattern according to the second example is a speed control pattern for changing the feeding timing of the cardboard sheet SH, and is used when there is a manufacturing error. Specifically, the roller control pattern according to the second example is a speed control pattern for advancing the feeding timing of the even-numbered corrugated sheet SH2, and is applied when the shift amount setting value is -5 mm. (The roller control pattern number is 0).

  As shown in FIG. 10, in the roller control pattern according to the second example, the speed control pattern P1 for the odd-numbered corrugated sheet SH1 is the same as the basic roller control pattern, but the even-numbered corrugated sheet SH2 Is different from the basic roller control pattern. Specifically, an acceleration region R21a (indicated by a solid line) included in the speed control pattern P2 of the roller control pattern according to the second example is an acceleration region R21 (indicated by a broken line) included in the speed control pattern P2 of the basic roller control pattern. ) Is generally shifted to the left. Specifically, the start position of the acceleration region R21a according to the second example is the rotation angle 178.6 °, and this rotation angle is 180 ° that is the start position of the acceleration region R21 according to the first example (reference Acceleration start timing) is smaller than In addition, the end position of the acceleration region R21a according to the second example is the rotation angle 243.6 °, which is more than the rotation angle 245 ° which is the end position of the acceleration region R21 according to the first example. It is getting smaller.

  According to the roller control pattern according to the second example, since the acceleration region R21a for the even-numbered corrugated sheet SH2 starts from a small rotation angle, the acceleration start timing of the even-numbered corrugated sheet SH2 is advanced. It becomes. Specifically, the rear end of the even-numbered corrugated sheet SH2 exits the feeding device 2 at a timing corresponding to 5 mm in the feeding direction FD, and is fed toward the printing device 3 and the die cutter 5 on the downstream side. Feeding timing is advanced. As a result, the conveyance interval of the even-numbered corrugated sheet SH2 with respect to the odd-numbered corrugated sheet SH1 is reduced by 5 mm.

  In addition, in order to shorten the acceleration start timing and shorten the transport interval to a desired length (a shift amount corresponding to the shift amount set value, and -5, -4.5, ..., -0.5 mm described above). The amount (angle) to be reduced from the rotation angle 180 ° based on the start position of the acceleration region R21a is basically the diameter Dp of the printing cylinders 30A, 31A and the thickness of the printing members 31B1, 31B2, 30B1, 31B1 It can be determined uniquely. Therefore, for each of -5, -4.5, ..., -0.5 mm as the shift amount setting value, an amount by which the start position of acceleration region R21a should be reduced from the rotation angle 180 ° is obtained in advance, A roller control pattern can be defined for each of the shift amount setting values. Basically, the amount by which the start position of the acceleration region R21a should be reduced from the rotation angle 180 ° becomes larger as the absolute value of the shift amount setting value becomes larger.

  On the other hand, even when the feeding timing of the even-numbered corrugated sheet SH2 is changed by applying the roller control pattern according to the second example as described above, that is, the feeding roller 124 of the corrugated sheet feeding device 2 Even when the acceleration start timing of 127 is advanced, there is no need to change the operation of the grate 141 of the corrugated sheet feeder 2 from the normal time. This will be described with reference to FIG.

  FIG. 11 is an explanatory view of the operation of the grate 141 when the second example of the roller control pattern according to the embodiment of the present invention is applied. In FIG. 11, the horizontal axis indicates the rotation angle (°) of the printing cylinders 30A and 31A, and the vertical axis indicates the speed ratio (%) of the peripheral speed of the feeding rollers 124 to 127 with respect to the peripheral speed of the printing cylinders 30A and 31A. And the height of the grating 141, and shows the roller control pattern according to the second example and the operation of the grating 141 in an overlapping manner. More specifically, in FIG. 11, the position where the speed ratio is 100% is shown as the height (reference height) of the grate 141 at which the feeding rollers 124 to 127 and the cardboard sheet SH begin to contact. When the grate 141 is lower than the reference height, the feed rollers 124 to 127 are in contact with the cardboard sheet SH, and when the grate 141 is higher than the reference height, the feed rollers 124 to 127 and The contact with the cardboard sheet SH is cut off.

  As in the roller control pattern according to the second example, when the start position of the acceleration region R21a is shifted to the left, the rotation start timing of the feed rollers 124 to 127 is advanced, but no particular problem occurs. That is, as shown in FIG. 11, even when the start position of the acceleration region R21a is shifted to the leftmost by applying the maximum value of -5 mm as the shift amount setting value, the feed rollers 124 to 127 and the even number At a rotation angle of 172 ° corresponding to the timing at which contact with the cardboard sheet SH2 of the eyes starts, the feed rollers 124 to 127 are in a rotation stop state, so the even corrugated sheet SH2 contacts the feed rollers 124 to 127. Do not slip.

  FIG. 12 is an explanatory view of a third example of the roller control pattern according to the embodiment of the present invention. 12, the horizontal axis indicates the rotation angle (°) of the printing cylinders 30A and 31A, and the vertical axis indicates the speed ratio (%) of the peripheral speed of the feed rollers 124 to 127 with respect to the peripheral speed of the printing cylinders 30A and 31A. Is shown. The roller control pattern according to the third example is a speed control pattern for changing the feeding timing of the cardboard sheet SH, and is used when there is a manufacturing error. Specifically, the roller control pattern according to the third example is a speed control pattern for delaying the feeding timing of the even-numbered corrugated sheet SH2, and is applied when the shift amount setting value is +5 mm. (The roller control pattern number is No. 20).

  As shown in FIG. 12, in the roller control pattern according to the third example, the speed control pattern P1 for the odd-numbered corrugated sheet SH1 is the same as the basic roller control pattern, but the even-numbered corrugated sheet SH2 Is different from the basic roller control pattern. Specifically, an acceleration region R21b (indicated by a solid line) included in the speed control pattern P2 of the roller control pattern according to the third example is an acceleration region R21 (indicated by a broken line) included in the speed control pattern P2 of the basic roller control pattern. ) Is generally shifted to the right. Specifically, the start position of the acceleration region R21b according to the third example is the rotation angle 181.4 °, and this rotation angle is 180 ° that is the start position of the acceleration region R21 according to the first example (reference Acceleration start timing) is greater than In addition, the end position of the acceleration region R21b according to the third example is the rotation angle 246.4 °, which is more than the rotation angle 245 ° which is the end position of the acceleration region R21 according to the first example. It is getting bigger.

  According to the roller control pattern according to the third example, since the acceleration region R21b for the even-numbered corrugated sheet SH2 starts from a large rotation angle, the acceleration start timing of the even-numbered corrugated sheet SH2 is delayed. It becomes. Specifically, the rear end of the even-numbered corrugated sheet SH2 exits the feeding device 2 at a timing corresponding to 5 mm in the feeding direction FD, and is fed toward the printing device 3 and the die cutter 5 on the downstream side. Delivery timing is delayed. As a result, the conveyance interval of the even-numbered corrugated sheet SH2 with respect to the odd-numbered corrugated sheet SH1 is extended by 5 mm.

  The acceleration region is delayed to delay the acceleration start timing and extend only the transfer interval to a desired length (the shift amount corresponding to the shift amount setting value, +0.5,..., +4.5, +5 mm described above). The amount (angle) to be increased from the rotation angle 180 ° based on the start position of R21b is basically the same as the diameter Dp of the printing cylinders 30A, 31A and the thickness of the printing members 31B1, 31B2, 30B1, 31B1. It can be determined in Therefore, for each of +0.5,..., +4.5, +5 mm as the shift amount setting value, the amount by which the start position of the acceleration region R21b should be increased from the rotation angle 180 ° is obtained in advance, and these shift amount settings A roller control pattern can be defined for each of the values. Basically, the amount by which the start position of the acceleration region R21b should be increased from the rotation angle 180 ° becomes larger as the shift amount setting value becomes larger.

  On the other hand, even when the feeding timing of the even-numbered corrugated sheet SH2 is changed by applying the roller control pattern according to the third example as described above, that is, the feeding roller 124 of the corrugated sheet feeding device 2 Even when the acceleration start timing of 127 is delayed, the operation of the grate 141 of the cardboard sheet feeding device 2 does not need to be particularly changed from the normal time. This will be described with reference to FIG.

  FIG. 13 is an explanatory view of the operation of the grate 141 when the third example of the roller control pattern according to the embodiment of the present invention is applied. In FIG. 13, the horizontal axis indicates the rotation angle (°) of the printing cylinders 30A and 31A, and the vertical axis indicates the speed ratio (%) of the peripheral speed of the feeding rollers 124 to 127 with respect to the peripheral speed of the printing cylinders 30A and 31A. And the height of the grating 141, and shows the roller control pattern according to the third example and the operation of the grating 141 in an overlapping manner. More specifically, in FIG. 13, the position where the speed ratio is 100% is shown as the height (reference height) of the grate 141 at which the feeding rollers 124 to 127 and the cardboard sheet SH are in contact with each other.

When the start position of the acceleration region R21b is shifted to the right as in the roller control pattern according to the third example, the rotation start timing of the feed rollers 124 to 127 is delayed, and the even-numbered corrugated sheet SH2 is fed by the feed roller 124. Although the distance to be sent becomes short at -127, no particular problem occurs. This is because even if the maximum +5 mm is applied as the shift amount setting value and the start position of the acceleration region R21b is shifted to the rightmost, the leading end of the even-numbered corrugated sheet SH2 (the rotation angle theta ₂ in Figure 13 after reaching illustrates the timing in which the tip of the even-numbered cardboard sheet SH2 reaches the feed roll 23 (the rotation angle theta ₁ is the tip of the odd-numbered cardboard sheet SH1 Is the timing at which the feed rolls 23 and 24 are reached)), and blocking of the contact between the feeding rollers 124 to 127 and the even-numbered corrugated sheet SH2 by the grate 141 is performed. In this case, the even-numbered corrugated cardboard sheet SH2 can be reliably delivered to the feed rolls 23, 24.

  As described above, when the feeding timing of the even-numbered corrugated sheet SH2 is changed, it is necessary to perform rotational phase adjustment (so-called register adjustment) of the upstream slotter unit 41 in the creaser slot 4. That is, it is necessary to adjust the rotational phase of the slotter blades 41A1 and 41A2 of the slotter unit 41 that performs grooving on the even-numbered cardboard sheets SH2 in accordance with the applied shift amount setting value.

  In addition, although the printing apparatus 3 has two printing units 30 and 31, there is variation in manufacturing error between the printing members of these printing units 30 and 31, or between the printing members and the die cutter 5 die. There is a variation in manufacturing error. In such a case, the worker may set the shift amount setting value in consideration of the appropriate point of the shift amount. For example, the printing unit 30 has a manufacturing error that the distance between the printing members 30B1 and 30B2 is 2 mm wider than the correct distance, and the printing unit 31 has the distance between the printing members 31B1 and 31B2 1 mm wider than the correct distance In the situation where there is a manufacturing error and there are no manufacturing errors in the punching dies 52A1 and 52A2 of the die cutter 5, the middle value of the dispersion of these manufacturing errors is adopted, and the shift amount setting value is set to +1 mm. Is good.

[Function effect]
Next, the operation and effects of the cardboard sheet feeding device 2 according to the embodiment of the present invention will be described.

  According to the present embodiment, when the two cardboard sheets SH1 and SH2 are sent out while the printing cylinders 30A and 31A make one rotation, the feeding timing is changed for the even-numbered corrugated sheet SH2, thereby being delivered. The interval (conveyance interval) between the odd-numbered corrugated sheet SH1 and the even-numbered corrugated sheet SH2 can be appropriately changed. As a result, even if there is a manufacturing error in the printing plate members 30B1, 30B2, 31B1, 31B2 applied to the printing apparatus 3 and the punching dies 52A1, 52A2 (including the wooden mold) applied to the die cutter 5, the odd-numbered sheets With respect to both the corrugated sheet SH1 and the even-numbered corrugated sheet SH2, the processing positions by the printing device 3 and the die cutter 5 can be properly aligned with desired positions.

  Further, according to the present embodiment, the feed timing of the sheet SH2 is appropriately changed by changing the acceleration start timing of the even-numbered corrugated sheet SH2, and the odd-numbered corrugated sheet SH1 and the even-numbered sheets are changed. The conveyance distance between the eye and the corrugated sheet SH2 can be reliably changed. In addition, since the acceleration start timing is changed while maintaining the same magnitude of acceleration, the slip of the cardboard sheet SH2 on the feeding rollers 124 to 127 can be suppressed. That is, when the acceleration is increased, the corrugated cardboard sheet SH2 is likely to slip on the feeding rollers 124 to 127, but such slip can be suppressed by maintaining the same magnitude of the acceleration. Therefore, stable delivery by the corrugated sheet feeder 2 can be secured.

  Further, according to the present embodiment, the operator can appropriately change the shift amount setting value in accordance with the order specification using the operation panel 240. This makes it possible to appropriately cope with various printing members and patterns that change according to order specifications.

  Further, according to the present embodiment, by storing the shift amount setting value used in the past order, the shift amount setting value is automatically set when an order having the same specification as this order is next performed. It can be set by As a result, it is possible to save time and labor for the operator to input the shift amount setting value.

  Further, according to the present embodiment, by obtaining a plurality of roller control patterns in advance and storing them in the roller control pattern memory 261, it is possible to rapidly apply the roller control pattern according to the shift amount setting value. it can. Also, by displaying such a roller control pattern on the information display unit 244, it is possible to make the worker easily grasp the roller control pattern actually used.

  Further, according to the present embodiment, the operator can change the feeding timing of the odd-numbered corrugated sheet SH1 by changing only the feeding timing of the even-numbered corrugated sheet SH2, compared with the case where the feeding timing of the odd-numbered corrugated sheet SH1 is changed. The relationship between the shift amount setting value and the transport interval of the two cardboard sheets SH1 and SH2 changed by the shift amount setting value can be easily understood.

[Modification]
Next, modifications of the above-described embodiment will be described. In addition, the some modification shown below can be implemented combining with each other suitably.

(Modification 1)
In the embodiment described above, the feed timing of the corrugated cardboard sheet SH2 is changed by changing the acceleration start timing applied to the even-numbered corrugated sheet SH2, but in the modification, the acceleration start timing is changed. Alternatively, the magnitude of the acceleration applied to the even-numbered cardboard sheet SH2 may be changed. Even in such a modification, the even-numbered corrugated sheet SH2 is provided for each of the shift amount setting values (−5, −4.5,..., 0, +0.5,..., +4.5, +5 mm) described above. A plurality of roller control patterns (21 types of roller control patterns including a basic roller control pattern) for changing the magnitude of the acceleration applied to the above may be prepared.

  FIG. 14 is an explanatory view of a fourth example of the roller control pattern, which is a modified example of the embodiment of the present invention. In FIG. 14, the horizontal axis indicates the rotation angle (°) of the printing cylinders 30A and 31A, and the vertical axis indicates the speed ratio (%) of the peripheral speed of the feeding rollers 124 to 127 with respect to the peripheral speed of the printing cylinders 30A and 31A. Is shown. The roller control pattern according to the fourth example shown in FIG. 14 is a speed control pattern for advancing the feeding timing of the even-numbered corrugated sheet SH2, and is applied when the shift amount setting value is −5 mm (see FIG. 14). Roller control pattern number is 0).

  As shown in FIG. 14, in the roller control pattern according to the fourth example, the inclination of the acceleration region R21c included in the speed control pattern P2 (indicated by a solid line) is that of the acceleration region R21 of the basic roller control pattern (see FIG. 9). It is steeper than the slope (shown by a broken line). That is, the acceleration of the acceleration region R21c is larger than the acceleration of the acceleration region R21. Specifically, in the roller control pattern according to the fourth example, the start position of the acceleration region R21c is the rotation angle 180 °, and this rotation angle is the same as the start position of the acceleration region R21 of the basic roller control pattern (ie acceleration The start timing has not changed). However, the end position of the acceleration region R21c is the rotation angle 242.5 °, and this rotation angle is smaller than the rotation angle 245 ° which is the end position of the acceleration region R21 of the basic roller control pattern (that is, the acceleration end The timing is getting faster).

  According to the roller control pattern according to the fourth example of such a modification, the acceleration applied when accelerating the even-numbered corrugated sheet SH2 from the rotation stop state becomes large. As a result, the feeding timing at which the rear end of the even-numbered corrugated sheet SH2 exits the feeding device 2 and is fed toward the printing device 3 and the die cutter 5 on the downstream side corresponds to 5 mm in the feeding direction FD. At an earlier timing, the conveyance interval of the even-numbered corrugated sheet SH2 relative to the odd-numbered corrugated sheet SH1 is reduced by 5 mm.

  Next, FIG. 15 is an explanatory view of a fifth example of the roller control pattern, which is a modified example of the embodiment of the present invention. In FIG. 15, the horizontal axis indicates the rotation angle (°) of the printing cylinders 30A and 31A, and the vertical axis indicates the speed ratio (%) of the peripheral speed of the feeding rollers 124 to 127 to the peripheral speed of the printing cylinders 30A and 31A. Is shown. The roller control pattern according to the fifth example shown in FIG. 15 is a speed control pattern for delaying the feeding timing of the even-numbered corrugated sheet SH2, and is applied when the shift amount setting value is +5 mm (see FIG. 15). Roller control pattern number 20).

  As shown in FIG. 15, in the roller control pattern according to the fifth example, the inclination of the acceleration region R21d included in the speed control pattern P2 (indicated by a solid line) is the inclination of the acceleration region R21 of the basic roller control pattern (indicated by a broken line). It has become looser than). That is, the acceleration of the acceleration region R21d is smaller than the acceleration of the acceleration region R21. Specifically, in the roller control pattern according to the fifth example, the start position of the acceleration region R21d is the rotation angle 180 °, and this rotation angle is the same as the start position of the acceleration region R21 of the basic roller control pattern (ie acceleration The start timing has not changed). However, the end position of the acceleration region R21d is the rotation angle 247.8 °, and this rotation angle is larger than the rotation angle 245 ° which is the end position of the acceleration region R21 of the basic roller control pattern (that is, the acceleration end Timing is late).

  According to the roller control pattern according to the fifth example of such a modification, the acceleration applied when accelerating the even-numbered corrugated cardboard sheet SH2 from the rotation stop state is reduced. As a result, the feeding timing at which the rear end of the even-numbered corrugated sheet SH2 exits the feeding device 2 and is fed toward the printing device 3 and the die cutter 5 on the downstream side corresponds to 5 mm in the feeding direction FD. The timing is delayed, and the conveyance interval of the even-numbered corrugated sheet SH2 with respect to the odd-numbered corrugated sheet SH1 is extended by 5 mm.

  As described above, the feed timing of the sheet SH2 is appropriately changed by changing the magnitude of the acceleration of the even-numbered corrugated sheet SH2, and the odd-numbered corrugated sheet SH1 and the even-numbered sheets are changed. The conveyance interval with the corrugated sheet SH2 can be reliably changed. In addition, since the magnitude of the acceleration is changed while maintaining the acceleration start timing the same, it is possible to suppress that the lowermost cardboard sheet SH falls and slips on the feeding rollers 124 to 127 during acceleration. That is, when the acceleration start timing is advanced, acceleration of the feeding rollers 124 to 127 starts before the lowermost corrugated sheet SH contacts the feeding rollers 124 to 127, and the lowermost corrugated sheet SH is fed to the feeding roller 124. There is a possibility of slipping when contacting ~ 127, but if the acceleration start timing is maintained the same, the timing when the lowermost cardboard sheet SH contacts the feeding rollers 124 to 127 and the acceleration of the feeding rollers 124 to 127 Such slippage can be suppressed because the difference between the timing of the start of the rotation and the start of the rotation is kept constant. Therefore, stable delivery by the corrugated sheet feeder 2 can be secured.

(Modification 2)
In the embodiment described above, 21 types of roller control patterns including the basic roller control pattern are prepared, but more types of roller control patterns may be prepared. For example, roller control patterns for the standard size and small size of the cardboard sheet SH may be created, and the roller control patterns may be used properly depending on the sheet size of the order. In this example, 21 types of roller control patterns including a basic roller control pattern may be prepared for standard size, and 21 types of roller control patterns including a basic roller control pattern may be prepared for small size.

  Furthermore, the present invention is not limited to the use of 21 shift amount setting values (−5, −4.5,..., 0, +0.5,..., +4.5, +5 mm). For example, a shift amount setting value obtained by cutting a range from -3 mm to +3 mm at an interval of 0.5 mm may be used. By doing this, the types of roller control patterns may be reduced.

(Modification 3)
In the embodiment described above, the plurality of roller control patterns created in advance are stored in the roller control pattern memory 261, and the roller control pattern corresponding to the shift amount setting value is applied among the plurality of roller control patterns. . In a modification, instead of storing a plurality of roller control patterns created in advance in this manner, the roller control pattern to be applied may be obtained by calculation. In this modification, the roller control pattern memory 261 becomes unnecessary, the roller motor control device 254 stores a formula for creating the roller control pattern, and the motion controller 260 calculates the roller control pattern calculated according to this formula. send. The roller control pattern can be calculated from the shift amount setting value, the diameter Dp of the printing cylinders 30A and 31A, the thickness of the printing plate members 31B1, 31B2, 30B1 and 31B1, and the like. In particular, the speed control pattern (acceleration start timing, acceleration end timing, acceleration magnitude, etc.) of the acceleration region R21 to be applied to the even-numbered corrugated cardboard sheet SH2 in the roller control pattern may be calculated based on the shift amount setting value. . According to such a modification, the storage capacity can be reduced because it is not necessary to store the roller control pattern.

(Modification 4)
Although the feeding timing of the even-numbered corrugated sheet SH2 is changed in the above-described embodiment, the odd-numbered corrugated sheet is not changed in the modification without changing the feeding timing of the even-numbered corrugated sheet SH2. The feed timing of the sheet SH1 may be changed, or the feed timing of both the odd-numbered corrugated sheet SH1 and the even-numbered corrugated sheet SH2 may be changed. The point is that the odd-numbered corrugated cardboard sheet SH1 and the even-numbered corrugated cardboard sheet SH2 are sent out by changing the feeding timing of at least one of the odd-numbered corrugated sheet SH1 and the even-numbered corrugated sheet SH2. The interval (conveying interval) of may be changed.

(Modification 5)
In the embodiment described above, the stop areas R14 and R24 are included in the roller control pattern, but in a modification, a roller control pattern not including the stop area may be applied. In the roller control pattern which does not include the stop area, the top surface of the grate 141 descends from the top surface of the feeding rollers 124 to 127 at the same time as the speeds of the feeding rollers 124 to 127 become 0, and the corrugated sheet SH and the feeding roller Since the contacts 124 to 127 are in contact, when the acceleration start timing is changed as in the embodiment described above, it is also necessary to change the elevation timing of the grate 141. However, when the magnitude of the acceleration is changed as in the first modification, it is not necessary to change the timing of raising and lowering the grate 141.

(Modification 6)
In the embodiment described above, the corrugated cardboard sheet feeding device 2 is provided with the grate 141, but the present invention is configured to continuously connect two corrugated cardboard sheets by the corrugated cardboard sheet feeding device without grit, that is, only the feeding roller. It is applicable also to the corrugated-cardboard sheet feeding apparatus to send out. In this modification, the stop timing of each feeding roller may be adjusted in accordance with the sheet length of the cardboard sheet.

DESCRIPTION OF SYMBOLS 1 Corrugated cardboard box making machine 2 Corrugated cardboard sheet feeding device 3 Printing device 4 Crease slotter 5 Die cutter 23, 24 Feed roll 30, 31 Printing unit 30A, 31A Printing cylinder 31B1, 31B2, 30B1, 31B1 Printing member 41, 42 Slotter unit DESCRIPTION OF SYMBOLS 50 Die cylinder 52A1, 52A2 Punching die 90, 91, 102, 103 Roller motor 124, 125, 126, 127 Feeding roller 141 Grate 210 Lower control apparatus 220 Program memory 240 Operation panel 244 Information display part 254 Roller motor control apparatus 255 Pattern Number setting memory 260 Motion controller 261 Roller control pattern memory

Claims (10)

A corrugated sheet feeder,
A feeding roller for feeding the lowermost corrugated sheet of the laminated corrugated sheets along the feeding direction;
A roller motor that rotationally drives the feeding roller;
An acceleration area for accelerating the rotation of the feed roller, a constant speed area for rotating the feed roller at a constant speed after the acceleration area, and a feed speed of the feed roller after the constant speed area And a variable speed control of the roller motor on the basis of a speed control pattern including a speed reduction area for decelerating the rotation to feed a corrugated sheet by the feeding roller, and the corrugated sheet feeding apparatus The speed control pattern is configured to be applied to each of the two cardboard sheets so as to feed the two cardboard sheets during one rotation of the printing cylinder of the downstream printing device. A controller,
Have
The control device is configured to control the speed control pattern of the acceleration region applied to the first corrugated sheet among the two corrugated sheets and to send out the corrugated sheet among the two corrugated sheets. The feed timing of at least one of the first and second corrugated cardboard sheets is changed by changing the speed control pattern of the acceleration region applied to the second corrugated cardboard sheet.
A corrugated sheet feeder characterized in that.   The rotation angle of the printing cylinder is 0 ° between the speed control pattern of the acceleration area applied to the first corrugated sheet and the speed control pattern of the acceleration area applied to the second corrugated sheet. The timing to start acceleration of the first corrugated sheet, defined as a reference, and the timing to start acceleration of the second corrugated sheet, defined based on a rotation angle of 180 ° of the printing cylinder The corrugated sheet feeder according to claim 1, wherein the different.   Accelerating the first corrugated sheet between the speed control pattern of the accelerated area applied to the first corrugated sheet and the speed control pattern of the accelerated area applied to the second corrugated sheet The corrugated sheet feeder according to claim 1, wherein the magnitude of the acceleration is different from the magnitude of the acceleration for accelerating the second corrugated sheet. The operator further includes an input device for inputting a set value for changing a feeding timing of at least one of the first and second corrugated board sheets,
The said control apparatus is comprised so that the said speed control pattern of each of the said, 1st and 2nd corrugated-cardboard sheet according to the setting value input into the said input device may be applied. The corrugated sheet feeder according to any one of the preceding claims. The controller is
Storing a set value used to change the feeding timing of at least one of the first and second corrugated cardboard sheets used in an order;
When an order of the same specification as the order in which the set value is stored is subsequently performed, the stored set value is read out, and each of the first and second corrugated cardboard sheets according to the set value is read. 5. A corrugated sheet feeder as claimed in any one of the preceding claims, adapted to apply a speed control pattern.   The control device stores in advance a plurality of speed control patterns each having a different acceleration region, and among the plurality of speed control patterns, at least one of the first and second corrugated cardboard sheets is supplied. The corrugated sheet feeder according to any one of claims 1 to 5, wherein the speed control pattern according to the set value for changing the feed timing is selected and applied.   The control device is configured to obtain a speed control pattern according to a set value for changing the feeding timing of at least one of the first and second corrugated cardboard sheets by a predetermined calculation formula and apply it. The corrugated sheet feeder according to any one of claims 1 to 5.   The set value is the first corrugated board by changing the feeding timing of the first corrugated board sheet with respect to the reference delivery position when the first corrugated board sheet is fed out at the reference feeding timing. The feeding timing of the second corrugated board sheet is changed with respect to an amount by which the feeding position of the sheet is to be shifted and a reference feeding position when the second corrugated board sheet is fed at the feeding timing of the reference. The corrugated sheet feeder according to any one of claims 4 to 7, wherein at least one of the amounts by which the delivery position of the second corrugated sheet is to be shifted.   The corrugated sheet feeder according to any one of claims 1 to 8, wherein the control device is configured to change only the feeding timing of the second corrugated sheet. A corrugated sheet feeder according to any one of claims 1 to 9,
A plurality of processing devices provided on the downstream side in the delivery direction by the corrugated sheet feeder and including at least the printing device;
A carton sheet making machine characterized by having.

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