JP6302351B2 - Corrugated sheet processing apparatus and method for setting the same - Google Patents

Description

  The present invention relates to a corrugated cardboard processing apparatus such as a box making machine that performs processing including printing on a corrugated cardboard sheet, and a setting method thereof.

  A typical machine for processing cardboard sheets is a box making machine. The box making machine is sequentially provided with processing units such as a paper feeding unit, a printing unit, a paper discharge unit, a die cut unit, a folder gluer unit, and a counter ejector unit from the upstream side. The sheet feeding unit supplies plate-like cardboard sheets to the printing unit, the printing unit prints on the cardboard sheets, the cardboard sheet printed by the paper discharge unit performs slotting and slotting with a slotter, and a die cutting unit Unnecessary parts are cut and removed from the cardboard sheet by punching. In addition, the folder gluer part is bent so that the left and right ends of the corrugated cardboard are superposed on the back side, and the overlapping portions of the left and right ends are glued together to form a sheet material for box making (cardboard box blank) Then, the sheet material for box making is counted and stacked in the counter ejector portion.

  In such a box making machine, when changing the order of the box making sheet material, it is necessary to perform set processing such as ink cleaning of the ink supply system of the printing unit and replacement of the printing plate mounted on the plate cylinder of the printing unit. become. Many operations required for this order change are automated, and each processing unit is automatically set in a state corresponding to a new order by so-called auto-set processing. However, the work for exchanging the stamp requires a separate manpower.

  The work of exchanging the printing plate also tends to reduce the burden on the operator by developing a device that assists in exchanging the printing plate. For example, Patent Document 1 discloses an apparatus for assisting in exchanging a printing plate, which relates to a sheet-fed printing machine instead of a box making machine. However, even if these auxiliary devices are used, an operator's manual work is required. Further, when exchanging the printing plate, it is necessary to perform cylinder removal to separate the plate cylinder of the printing unit from the impression cylinder provided facing the printing cylinder.

  Therefore, at the time of order change, the box making machine is stopped, and, for example, the lifting unit including the plate cylinder is raised to remove the cylinder from the impression cylinder, and the printing plate is exchanged. When the exchange of the printing plates is completed, the cylinder is moved to bring the printing cylinder closer to the impression cylinder by, for example, lowering the elevating unit so that the printing cylinder comes into pressure contact with the cardboard sheet. And if the auto-setting of each other process part is also completed, a box making machine can be started.

  The lowering of the elevating unit that brings the plate cylinder close to the impression cylinder is performed by operating the plate cylinder set button as a trigger. The plate cylinder set button is provided on the operation panel of each printing unit and is manually operated by an operator. The reason why the lifting unit is lowered by using the manual operation of the operator as a trigger to complete the setting of the printing unit is because it is difficult to automatically determine whether or not the printing plate has been replaced.

  In such a printing unit, a plurality of (for example, four) printing units are provided, and printing is performed by selectively using the plurality of printing units according to the number of ink colors necessary for printing. In addition, a flexographic printing machine that is usually used for printing on a cardboard sheet is applied to the printing unit. In this flexographic printing machine, unlike color printing using process ink, ink of a dedicated color (so-called special color) according to the order is used. Many orders are monochromatic or two-color, and orders of three or four colors are relatively few.

  Therefore, for example, if two ink colors are necessary for printing, two printing units are used. If the current order has two colors, two printing units are used, but the remaining two printing units are idle, and this is the next order from the printing unit used in the current order. It can be used by switching to an idle printing unit (idle printing unit), or the printing unit used in the current order and this idle printing unit can be used together.

  However, when exchanging the printing plate, the plate cylinder of the printing unit must be separated from the impression cylinder provided opposite thereto. However, when transporting corrugated cardboard sheets with a plate cylinder and impression cylinder, the idle printing unit must be in pressure contact with the plate cylinder and impression cylinder. First, the box making machine must be stopped and the printing plate must be replaced. On the other hand, for example, as described in Patent Document 2, when a corrugated cardboard sheet is conveyed using a conveyor, a suction device, or the like, the idle printing unit usually does not need to use the plate cylinder and the impression cylinder. The plate cylinder can be separated from the impression cylinder and the printing plate can be replaced.

  In the case of such an idle printing unit, when the box making machine is in operation for the production of the current order, it is possible to perform the work of exchanging the printing plate for the next order in parallel with this. If you do the work of exchanging the printing plate, the work of exchanging the printing plate of the idle printing unit becomes unnecessary when changing the order, and the stop time of the box making machine for order change is shortened by this amount. It is possible to improve the operating rate of the box making machine.

Japanese Utility Model Publication No. 61-77247 JP 2000-6362 A

  By the way, even when exchanging the printing plate in advance with the idle printing unit, the lowering of the lifting unit that brings the plate cylinder close to the impression cylinder for cylinder loading is triggered by the operator's operation of the plate cylinder set button. Then, the setting of the printing unit is completed by lowering the lifting unit. Thereby, a box making machine can be started and production of the next order can be started. However, even if both the stamp change and auto set are completed, the next order production cannot be started unless the operator operates the plate cylinder set button.

  When performing the plate replacement work in the idle printing unit in advance, there is time from the completion of the plate replacement to the completion of the current order and the completion of auto-set related to the order change, and the operator has completed the plate replacement. Is not clearly stored, so the plate cylinder set button may be operated after reconfirming. In this case, due to a delay in the operation timing of the plate cylinder set button, the stop time of the box making machine becomes longer and the operation efficiency is lowered.

  Even when replacing the printing plate of the printing unit currently in use, when the printing plate replacement is completed, the plate cylinder set button is operated on the operation panel of the printing unit, but the operation of this plate cylinder set button is forgotten. Then, after leaving the operation panel once, the operation is performed again, and an operation delay occurs, and the operation efficiency of the box making machine is reduced accordingly.

  The present invention was devised in view of such problems, and a corrugated sheet processing apparatus capable of shortening the stop time of a box making machine and improving its operating efficiency upon order change accompanied by plate replacement. It is an object to provide a setting method thereof.

  (1) A corrugated sheet processing apparatus according to the present invention has a processing section that processes a corrugated cardboard sheet, and the processing section selectively prints on the corrugated sheet conveyed by a conveyor using a plurality of printing units. A cardboard sheet processing apparatus including a printing unit that performs printing, and is provided in each of the plurality of printing units, so that a printing plate exchange (that is, a printing plate to be mounted on a printing drum at the time of an order change is changed to that of a subsequent order) The printing plate replacement switch that is turned on by the operator after the replacement of the printing plate is performed, and that the corresponding printing unit has undergone the printing plate replacement when the printing plate replacement switch is turned on. Display means.

  (2) An auto-set mechanism that sets the processing portion to correspond to the next order at the time of an order change, and the auto-set mechanism that is operated based on order information input in advance at the time of the order change, When determining completion of the setting by the auto setting mechanism and determining that the printing plate exchanged switch of the printing unit of the printing order of the next order among the plurality of printing units is turned on, the next order And a control device for starting the corrugated sheet processing apparatus.

(3) Of the plurality of printing units, the idle printing unit that is not used is preferably separated from the corrugated cardboard sheet to which the plate cylinder of the idle printing unit is conveyed, so that the printing plate can be replaced.
(4) Preferably, the plurality of printing units are provided with operation switches for use in exchanging the printing plate, and the printing plate exchanged switch is disposed in the vicinity of the operation switches.

(5) A plate cylinder operation switch for rotating the plate cylinders of the plurality of printing units as an operation switch used for exchanging the printing plates , and fastening the printing plates to the plate cylinders. The clamping switch is also used as the switch for which the printing plate has been replaced, and the operation for ending the clamping operation of the clamping switch is set to the ON operation of the switch for which the printing plate has been replaced. It is preferable.

(6) The display means is preferably an indicator lamp.
(7) It is preferable that a monitor for monitoring the operation of the entire corrugated board processing apparatus is provided, and the display means is an image display displayed on the monitor.
(8) A monitor for monitoring the operation of the entire corrugated cardboard processing apparatus is provided, and the control device may display the fact on the monitor when there is an order interruption for the order inputted in advance. preferable.

(9) It is preferable that a suction device for sucking and holding the cardboard sheet conveyed by the conveyor is attached.
(10) It is preferable that the corrugated board processing apparatus is a box making machine.

  (11) A method for setting a corrugated sheet processing apparatus according to the present invention includes a processing unit that processes a corrugated cardboard sheet, and the processing unit selectively uses a plurality of printing units and is conveyed by a conveyor. An automatic setting mechanism that includes a printing unit that performs printing, sets the processing unit so as to correspond to the next order at the time of order change, and a control device that controls the processing unit including the auto setting mechanism. The cardboard sheet processing apparatus is set in the plurality of printing units after the replacement of the printing plate in the idle printing unit that is not used in the processing of the current order and the replacement of the printing plate in the processing of the current order. A pre-preparation step for performing the switch operation for turning on the switch for which the printing plate has been replaced, Set processing (auto set) by the auto set mechanism based on the ordered order information, and the set processing has been completed and the printing plate exchanged switch of the printing unit to be replaced in the next order has been turned on. And an order change execution step in which the control device performs the start-up process of the corrugated sheet processing apparatus for processing the next order.

  (12) In the pre-preparation step, the printing plate exchange is carried out in addition to the printing plate exchange and the switch operation for the next order following the current order, and the printing plate exchange and the switch operation for the next and subsequent orders. It is also preferable.

(13) It is preferable to display on the display means that the printing unit has been exchanged when the printing plate exchange execution switch is turned on.
(14) It is preferable that the switch for which the printing plate has been replaced is disposed in the vicinity of operation switches used at the time of replacing the printing plate, and the switch operation is performed at the work position for the printing plate replacement.

(15) In the order change execution step, only the printing unit to be used in the next order among the plurality of printing units and the cylinder removing process for separating the plate cylinders of the plurality of printing units from the corrugated cardboard sheet; It is preferable to carry out the cylinder placing process for bringing the cardboard into contact with the corrugated cardboard sheet by the control device.
(16) The cardboard sheet processing apparatus is preferably a box making machine.

  According to the present invention, when an operator replaces a printing unit with a printing plate, by turning on the printing plate exchange completion switch of the printing unit, any printing unit has undergone the printing plate exchange in response to the on operation. Is recognized. When the display means that the printing unit has been replaced, it is possible to recognize that the printing plate has been replaced without going to the printing unit and confirming it visually. The printing plate can be exchanged efficiently and accurately.

  Also, at the time of order change, the control device operates the auto set mechanism based on the order information inputted in advance, determines completion of the set by the auto set mechanism, and prints the printing object to be replaced in the next order. If it is determined that the switch of the unit that has been subjected to the stamp replacement has been turned on, the cardboard sheet processing apparatus can be started quickly by starting the cardboard sheet processing apparatus for the next order.

  For example, if the next-order printing plate is exchanged in advance in the idle printing unit, the corrugated board processing apparatus can be quickly started. Further, if a printing plate exchanged switch is provided for each printing unit, for example, a printing plate exchanged switch can be arranged in the vicinity of operation switches used at the time of printing plate exchange. As a result, when the printing plate replacement is completed, the printing plate replacement completed switch can be operated promptly. For this reason, even in the case of a printing unit that was operating in the previous order, if the printing plate replacement execution switch is operated immediately after the completion of the printing plate replacement, the start condition of the corrugated cardboard sheet processing device for printing plate replacement is satisfied. The cardboard sheet processing apparatus can be started quickly.

It is a block diagram which shows the structure of the box making machine concerning one Embodiment of this invention. It is a block diagram which shows the box making machine concerning one Embodiment of this invention by a side view. It is a block diagram which shows a part of printing part of the box making machine concerning one Embodiment of this invention by a side view. It is a perspective view which shows a part of printing part of the box making machine concerning one Embodiment of this invention. It is a perspective view which shows the box making machine concerning one Embodiment of this invention seeing from the paper feed side. It is a figure which shows the display image of the monitor which is a display example after the printing plate exchange implementation implemented concerning one Embodiment of this invention. It is a flowchart explaining the printing plate exchange procedure concerning one Embodiment of this invention. It is a flowchart explaining the setting method (idle print unit object) concerning one Embodiment of this invention. It is a flowchart explaining the setting method (operation printing unit object) concerning one Embodiment of this invention. It is a flowchart explaining the setting method (idle print unit object) concerning one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 10 illustrate an embodiment of the present invention. Using these, a box making machine as a corrugated cardboard sheet processing apparatus according to the present embodiment, a printing unit equipped in the box making machine, and an order change. A setting method in this case will be described.

[1. Device configuration〕
[1-1. Box making machine)
First, the box making machine according to the present embodiment will be described with reference to FIG.
In FIG. 2, the process in which a corrugated board sheet | seat is processed into the sheet material for box making is shown separately from the apparatus structure above the apparatus structure. As shown in FIG. 2, in this box making machine, from the upstream side, the processing units of the paper feeding unit 1, the printing unit 2, the paper discharging unit 3, the die cutting unit 4, the folder gluer unit 5, and the counter ejector unit 6 are sequentially arranged. Is provided.

In the sheet feeding unit 1, a large number of plate-like corrugated cardboard sheets 10 a are loaded and fed to the printing unit 2 one by one.
The printing unit 2 includes printing units 20 a to 20 d (indicated here by reference numeral 20 when not distinguishing each printing unit) having a predetermined number of colors (here, four colors). Ink of each color is sequentially printed on the cardboard sheet 10a conveyed one by one.

In the paper discharge unit 3, the printed cardboard sheet is slotted by a slotter or scored by a scorer. In the die cut unit 4, unnecessary portions are cut from the cardboard sheet 10a by punching and punching of hand holes and air holes. Remove.
Note that the die cutting unit 4 may perform grooving and ruled lines for creating a specially shaped box. Therefore, both the paper discharge unit 3 and the die cut unit 4 have a function of grooving and ruled lines.

The folder gluer 5 is bent so that the left and right end portions of the corrugated cardboard sheet 10a are superposed on the back side (downward) by gluing the left and right ends of the corrugated cardboard sheet 10a that have been grooved or ruled. Processing is performed, and the left and right ends of the folded corrugated cardboard sheet 10a are bonded with glue to form a box-making sheet material (corrugated cardboard box blank) 10.
In the counter ejector unit 6, the sheet-making sheet materials 10 processed by the folder gluer unit 5 are stacked while being counted. When a predetermined number of sheet-making sheet materials 10 are stacked, the sheet material group 10G is shipped as one unit.

  The die cutting unit 4 does not have the paper discharge unit 3 and performs punching and punching of hand holes, air holes and the like, and also performs grooving and ruled lines to create the specially shaped box. Then, the cardboard sheet 10a in a state of being printed, grooved or ruled is introduced into the product production line, and articles are stacked on the cardboard sheet 10a, and a box is formed while wrapping the articles. Some machines are also called wraparound casers.

  The box-making sheet material provided to such a machine is a corrugated cardboard sheet 10a that has been subjected to printing, grooving, and ruled line processing at the stage processed by the die-cut unit 4. In this case, the folder gluer unit 5 is provided from the box-making machine. Omitted, the corrugated cardboard sheet 10a processed in the die cut unit 4 is sent to the counter ejector unit 6 for processing and shipment. The present invention can be widely applied to a corrugated board processing apparatus including such a machine.

[1-2. (Conveyor and printing unit)
Next, the conveyance conveyor 70 and the printing units 20a to 20d applied to the printing unit 2 of the box making machine will be described.
As shown in FIG. 3, the printing unit 2 includes printing units 20 a to 20 d that sequentially print ink of each color on a conveyance conveyor 70 having a conveyance belt 71 and a cardboard sheet 10 a that is conveyed one by one by the conveyance conveyor 70. And are provided.

The conveyor 70 includes a conveyor belt 71, guide rolls 25a to 25d for guiding or guiding and driving the conveyor belt 71, and a suction box disposed with the conveyor belt 71 interposed between the conveyor path of the cardboard sheet 10a. 26.
The conveyor belt 71 is an endless belt having a material property that is flexible and does not extend by laminating a cloth sheet on a rubber sheet, and has a large number of pores and has air permeability between the front and back sides. The transport belt 71 transports the cardboard sheet 10a held by the transport belt 71 by suction of the suction box 26 while circulating on the track guided by the guide rolls 25a to 25d.

  For the printing units 20a to 20d, a flexographic printing machine is used, and an ink chamber 21 including a chamber frame, a seal blade, and a doctor blade, and a flexo ink in the ink chamber 21 that rotates while sliding in contact with the seal blade and the doctor blade. An anilox roll 22 supplied in the groove of the surface, a plate cylinder (printing cylinder) 23 on which a printing plate (not shown) to which flexographic ink is transferred from the anilox roll 22 is mounted on the outer periphery, and a corrugated cardboard sheet 10a as a plate cylinder 23 and a pressure drum 24 in pressure contact with the pressure drum 23. In the case of a flexographic printing machine, all of the ink used is a special color, and unlike an offset printing machine, a process color ink is used to reproduce various colors at a density ratio of each ink.

  The frame that supports the ink chamber 21, the anilox roll 22, and the plate cylinder 23 is configured as an elevating unit 20M that can be moved up and down, and the printing unit that is used for printing lowers the elevating unit 20M so that the plate cylinder 23 is a cardboard sheet. The cylinder is placed so as to be in pressure contact with the impression cylinder 24 across 10a, and the ink is transferred from the plate cylinder 23 to the printing surface of the corrugated cardboard sheet 10a by the nip pressure generated thereby. On the other hand, a printing unit that is not used for printing performs cylinder removal in which the elevating unit 20M is raised and the plate cylinder 23 is disposed so as to be separated from the corrugated cardboard sheet 10a being conveyed. 2 and 3, among the printing units 20a to 20d, the printing units 20b and 20c are subjected to a cylinder insertion process for use in printing, and the printing units 20a and 20d are not used for printing. The removal process is in progress.

[1-3. (Configuration related to order change)
In such a box making machine, it is necessary to change the settings of the processing sections 1 to 6 when changing the order of the box making sheet material to be produced. That is, in the paper feed unit 1, the printing unit 2, the paper discharge unit 3, the die cut unit 4, the folder gluer unit 5, and the counter ejector unit 6, setting changes are performed in accordance with the size of the corrugated cardboard sheet 10a of the next order. In addition, the printing unit 2 performs a setting process such as ink cleaning of the ink supply system of the printing units 20b and 20c used and replacement of a printing plate mounted on the plate cylinder 21.

  Many operations required for order changes such as setting changes and ink washing of each processing unit are automated. As shown in FIG. 1, each processing unit 1 to 6 is automatically set, so-called auto-set processing. The auto set mechanism 111-116 to implement is equipped. Each of the auto-set mechanisms 111 to 116 includes an actuator for changing each setting, and each actuator is controlled by the controller (control device) 100 to change the setting of each processing unit. Although not shown, the controller 100 is configured by a microprocessor having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), or the like, or a computer having such a microprocessor.

  Note that each order information (including order change information) is input in advance to the production management apparatus 200, and the controller 100 obtains the order information from the production management apparatus 200, and each order data and box for the next order. Based on the operation status of the machine, an operation signal is output to each of the autoset mechanisms 111 to 116 at a required timing. Each of the autoset mechanisms 111 to 116 operates accordingly, and the controller 100 monitors these operation signals to determine the completion of the operation, that is, the completion of the autoset.

  At the time of order change, the controller 100 stops the box making machine, but for the printing unit 2, all the printing units 20 a to 20 d are raised to the cylinder-extracted state by raising the lifting unit 20 </ b> M. However, since the unused printing units 20a and 20d (see FIGS. 2 and 3) are in the cylinder-extracted state, when the box making machine is stopped, the used printing units 20b and 20c (see FIGS. 2 and 3) are moved up and down. Only unit 20M is raised.

  Many of the processing units 1 to 6 are set in a state corresponding to the new order by the auto-setting process, but the work for exchanging the printing plate requires a separate manpower. In the work for exchanging the stamp, the burden on the operator tends to be reduced by the development of an apparatus for assisting the exchanging of the stamp, but the manual work of the operator is still necessary.

  Therefore, at the time of order change, the controller 100 starts auto-setting, stops the box making machine, and raises the lifting unit of the printing unit that has been used to lift the plate cylinder 23 by cylinder removal. Separated from 24. As a result, all of the printing units 20a to 20d are in the cylinder-punched state, and the printing plate replacement can be performed while adding an operator's manual operation to the printing unit 20 used in the next order among the printing units 20a to 20d. . Which printing unit 20 is used in the next order is obtained from the order information.

  As shown in FIGS. 2 and 3, a work floor 73 accessible through step 72 is provided above the traveling track 10r of the cardboard sheet 10a, and the operator changes the printing plate on the work floor 73. In order to perform this printing plate exchange, as shown in FIG. 4, various operation buttons (button type operation switches) 81 to 86 are provided. In this example, the operator stands on the work floor 73 and performs the printing plate exchange, and the operation buttons 81 to 86 are arranged so as to be located at the hands of the operator standing on the work floor 73. . Depending on the method of exchanging the stamp plates, there are some which arrange the operation buttons 81 to 86 at the feet of the operator.

  The operation button 81 is a forward rotation button that rotates the plate cylinder 23 forward by a small amount, the operation button 82 is a reverse rotation button that reversely rotates the plate cylinder 23 by a small amount, and the operation button 83 makes the plate cylinder 23 stop emergency. It is an emergency stop button, the operation button 84 is a one-round automatic rotation forward rotation button that normally rotates the plate cylinder 23 by one rotation, and the operation button 85 is a tightening button (clamping that fastens and fixes the end of the plate cylinder 23) Switch). An operation button 86 is a printing plate replacement button that is turned on by the operator after completion of the printing plate replacement (a printing plate replacement switch), and is specific to each printing unit 20 of the printing unit 2. .

  As shown in FIG. 1, the printing plate replacement buttons 86a to 86d of the printing units 20a to 20d (when the printing plate replacement buttons 86 are distinguished in the printing units 20a to 20d, the suffix 86 is added to the reference numeral 86. Is attached to the controller 100, and when any of the printing plate replacement buttons 86 is turned on, an on signal indicating that is input to the controller 100. The controller 100 displays on the display means that the printing unit 20 that has been turned on based on the on signal has been subjected to the replacement of the printing plate.

  Further, the controller 100 determines the completion of the setting by each of the auto setting mechanisms 111 to 116, and the on / off operation of the printing plate replacement executed button 86 of the printing unit 20 that is the printing plate replacement target of the next order (ON signal). Is input), the lifting unit 20M of the printing unit 20 used in the next order is lowered, and the processing device (each processing unit 1 to 6) is started.

  Here, as the display means, as shown in FIGS. 1 and 5, rotating lamps 87 a to 87 d erected on the upper part of the frame of each printing unit 20 a to 20 d (indicated by reference numeral 87 if not distinguished from each other). And a first monitor (monitor display) 121 of the operator panel 120 provided in the paper feed unit 1 and a second monitor 131 of an operator panel (not shown) provided in the counter ejector unit 6.

  The display by the rotating lamps 87a to 87d of each printing unit 20a to 20d has an advantage of high visibility because it is performed by turning on and rotating the light, but instead of this, a light that does not rotate is used as an indicator lamp (display means). It may be used. For example, as shown in FIG. 6, the monitor display 121 displays the lamp mark displayed in the vicinity of each of the schematically displayed printing units 122 a to 122 d by lighting the display (lighting mark).

  The controller 100 displays on the monitors 121 and 131 information on the next order, in particular which of the printing units 20a to 20d is to be replaced and which printing plate is to be used for the next order. The operator sees the display information on the monitors 121 and 131 and exchanges the printing plates. Also, if there is an order interruption for an order that has been input in advance, auto-set processing is performed in response to the interrupted order, and there is an order interruption on the monitors 121 and 131 (for example, as shown in FIG. 6). In this way, the message “The unit has been canceled because an interrupt order has occurred. Please replace the stamp” is displayed, and the information on the interrupted order is displayed. Therefore, the operator can perform the printing plate exchange corresponding to the interrupted order by looking at the display information on the monitors 121 and 131.

[2. Action and effect)
Since the box making machine according to the present embodiment is configured as described above, the set processing at the time of order change and the printing plate exchange accompanied by the manual operation by the operator should be performed as follows. Can do. Hereinafter, the operation and effect will be described while explaining the procedures of exchanging the stamp and setting processing.

[2-1. (Replace stamp)
First, the printing plate exchange will be described. The printing plate exchange is performed in a state where the lifting unit 20M of the target printing unit 20 is raised.

  As shown in FIG. 7, the operator first removes the stamp (old stamp) used for the production of the previous order (step A10). At this time, the fastening of the printing plate is released, the tail edge side of the old printing plate is removed from the locking groove of the printing cylinder 23, and the one-turn automatic rotation forward rotation button 84 or the forward rotation button 81 is operated, The printing plate is removed from the outer periphery of the plate cylinder 23, and finally the grip side of the old printing plate is removed from the locking groove of the plate cylinder 23.

Next, the leading end of the new stamp plate is locked (temporarily fixed) in the locking groove of the plate cylinder 23 (step A20).
Next, the one-round automatic rotation forward rotation button 84 is operated to wind the new stamp on the outer periphery of the plate cylinder 23 (step A30). After operating the one-turn automatic rotation forward rotation button 84, the forward rotation button 81 and the reverse rotation button 82 are operated as necessary (step A40) to adjust the rotational phase of the plate cylinder 23, and then after the new stamp plate The tail edge side of the end is locked (temporarily fixed) in the locking groove of the plate cylinder 23, and the clamping button 85 is operated to completely lock (fix the edge side and the tail edge side of the new stamp plate. (Step A50).

[2-2. (Set processing when an idle printing unit is used in the next order)
Next, a description will be given of set processing when an idle printing unit that is not used in the current order is used in the next order.
As shown in FIG. 8, first, the operator performs the printing plate exchange as described above (step B10). This stamp exchange is performed during the production of the current order prior to the order change. In the present box making machine, the printing cylinder 2 transports the cardboard sheet 10a by the transport conveyor 70, so the plate cylinder 23 and the impression cylinder 24 are not used for transporting the cardboard sheet 10a. For this reason, the plate cylinder 23 of the idle printing unit 20 is separated from the impression cylinder 24, and the printing plate can be exchanged in the idle printing unit.

  When the exchange of the printing plates is completed, the operator presses the printing plate exchange execution button 86 of the printing unit 20 that has undergone the printing plate exchange to turn on (step B20). As a result, the ON signal of the stamp replacement button 86 of the corresponding printing unit 20 is input to the controller 100. In the controller 100, it is possible to grasp which printing unit 20 of the printing units 20a to 20d has performed the printing plate exchange from the input state of the ON signal.

When the controller 100 determines the end of the current order (step B30), the controller 100 raises each lifting unit 20M of the printing unit 20 used in the current order to remove the cylinder (step B40), and stops the box making machine. .
Next, the controller 100 performs auto-setting (step B50). That is, the controller 100 controls the auto-set mechanisms 111 to 116 based on the next order information obtained from the production management device 200 to change the setting of each processing unit.

  The controller 100 determines whether or not the auto-setting has been completed and the printing plate replacement execution button 86 of the printing unit (target printing unit) 20 used in the next order has been turned on (step B60). If the controller 100 determines that auto-setting has been completed and the printing plate replacement button 86 of the target printing unit 20 has been turned on, the controller 100 lowers the lifting unit 20M of the target printing unit 20 to enter the cylinder (step) B70).

Thereby, the setting of the printing unit 2 is completed. Since the setting of all the processing units 1 to 6 is completed, the controller 100 starts the box making machine for the next order.
Therefore, for example, as shown in FIGS. 2 and 3, if only the idle printing units 20a and 20d are used in the next order, the printing unit 20 used in the next order can be covered only by the idle printing units. As soon as the setting is completed, the lifting unit 20M of the printing unit 20 to be used can be lowered and placed, and production of the next order can be started immediately.

  Further, since the printing plate replacement button 86 is arranged in the vicinity of the operation switches 81 to 85 used at the time of printing plate replacement, when the printing plate replacement is completed, the printing plate replacement button 86 is immediately pressed to turn it on. Therefore, the operation of the stamp exchange completed button 86 is not time-consuming, and the risk of forgetting to operate the stamp exchange completed button 86 is reduced. Also from this point, the time required for setting can be shortened, and the burden on the operator for setting can be reduced.

[2-3. (Set processing when using the printing unit continuously in the next order)
Next, a description will be given of the set processing when the printing unit being used in the current order is continuously used in the next order.
As shown in FIG. 9, in this case, when it is time to change the order, the controller 100 first raises all the lifting units 20M of the printing unit 20 that has been used to remove the cylinder (step C5). Thereby, the raising / lowering unit 20M of all the printing units 20 will be in the state raised.

  Next, the controller 100 performs auto-setting (step C10). That is, the controller 100 controls the auto-set mechanisms 111 to 116 based on the next order information obtained from the production management device 200 to change the setting of each processing unit. In parallel with this autoset, the operator performs the printing plate exchange as described above (step C20).

  When the operator completes the replacement of the printing plate, the operator presses the replacement button 86 of the printing unit 20 for which the printing plate has been replaced to turn it on (step C30). As a result, the ON signal of the stamp replacement button 86 of the corresponding printing unit 20 is input to the controller 100. In the controller 100, it is possible to grasp which printing unit 20 has performed the printing plate exchange from the input state of the ON signal.

  The controller 100 determines whether or not the auto-setting is completed and the printing plate replacement execution button 86 of the printing unit (target printing unit) 20 used in the next order is turned on (step C40). When auto-setting is completed and it is determined that the printing plate replacement button 86 has been turned on in all of the target printing units 20, the lifting and lowering units 20M of all the target printing units 20 are lowered to enter the cylinder. (Step C50).

Thereby, the setting of the printing unit 2 is completed, and the setting of all the processing units 1 to 6 is completed, so the controller 100 starts the box making machine for the next order.
When the printing unit being used in the current order is continuously used in the next order, after the order change is started, wait for the lifting unit 20M of the printing unit 20 for exchanging the printing plate to rise, from (Step C5) Since the printing plate replacement is performed, the time required for the setting cannot be shortened as in the case where the printing unit 20 used in the next order can be covered only with the idle printing unit, but the operation switches 81 used when the printing plate replacement is performed. Since the printing plate replacement button 86 is arranged in the vicinity of .about.85, when the printing plate replacement is completed, the printing plate replacement button 86 can be immediately pressed to turn it on, and the effect of this can be obtained.

That is, when auto-setting is completed and the controller 100 is waiting for an ON operation of the printing plate replacement executed button 86, which is a condition for lowering the lifting unit 20M of the target printing unit 20, the printing plate replacement execution button When the 86 is turned on, the elevating unit 20M of the target printing unit 20 can be lowered, and the lowering timing of the target elevating unit 20M is reduced by the time shortened from the completion of the printing plate replacement to the printing plate replacement button 86. The time required for setting can be shortened by this amount.
Of course, it takes no time to operate the on-operation stamp replacement button 86, and the risk of forgetting to operate the stamp replacement button 86 is reduced, so that the burden on the operator for setting can be reduced. An effect is also obtained.

  Further, since three printing units 20 are required in the next order, when three idle printing units 20a and 20d and the printing unit 20b that has been used are used, the printing is performed in the idle printing unit during the previous order. If the plate is exchanged, the printing plate 20b only needs to be exchanged after the order change is started. Therefore, the time required for the printing plate exchange is reduced by this amount. This contributes to shortening the time required for setting.

[2-4. (Set processing when multiple idle printing units are used in the next order and the next order)
Next, set processing when idle printing units not used in the current order are used in the next order and the next order will be described.
Here, the four printing units 20a to 20d of the printing unit 2 are called the first, second, third, and fourth printing units in this order, and the current order is the first order and the next order following the current order. The order after the second order and the next order will be referred to as a third order.

  For example, the first printing unit 20a and the second printing unit 20b are used in the first order, the third printing unit 20c is used in the second order, and the fourth printing unit 20d is used in the third order. And In this case, when the first order is being produced, the third and fourth printing units 20c and 20d are idle printing units, and the printing plate can be replaced.

  Therefore, as shown in FIG. 10, during the production of the first order, the operator performs the printing plate exchange corresponding to the second order in the third printing unit 20c, and the third order in the fourth printing unit 20d. (Step D10), and further, each printing plate replacement button 86 is turned on (step D20).

  FIG. 10 shows a configuration in which the printing plate replacement performed button 86 is turned on after the printing plates of the third and fourth printing units 20c and 20d are replaced. In the third printing unit 20c, the second order is displayed. The printing plate exchange corresponding to the first order is performed and then the printing plate exchange completed button 86 is turned on. Next or in advance, the fourth printing unit 20d performs the printing plate exchange corresponding to the third order. After that, the stamp exchange completed button 86 may be turned on.

  As a result, an ON signal of the printing plate replacement button 86 of the printing units 20 c and 20 d according to the second and third orders is input to the controller 100. In the controller 100, it is possible to grasp which printing unit 20 of the printing units 20a to 20d has performed the printing plate exchange from the input state of the ON signal.

When the controller 100 determines the end of the first order (step D30), the controller 100 raises each lifting unit 20M of the printing units 20a and 20b used in the first order to remove the cylinder (step D40). ) Stop the box making machine.
Next, the second order auto-set is performed (step D50). That is, the controller 100 controls the auto-set mechanisms 111 to 116 based on the second order information obtained from the production management device 200, and changes the setting of each processing unit.

The controller 100 determines whether or not the auto-setting related to the second order has been completed and the printing plate replacement execution button 86 of the printing unit 20c used in the second order has been turned on (step D60). If it is determined that the auto-setting is completed and the printing plate replacement button 86 of the target printing unit 20c is turned on, the lifting unit 20M of the printing unit 20c used in the second order is lowered to enter the cylinder. (Step D70).
Thereby, the setting of the printing unit 2 is completed, the controller 100 starts the box making machine, and executes the second order (step D80).

When the controller 100 determines the end of the second order (step D90), the controller 100 raises each lifting unit 20M of the printing unit 20c used in the second order to remove the cylinder (step D100), Stop the box making machine.
Next, the third order auto-set is performed (step D110). That is, the controller 100 controls the auto-set mechanisms 111 to 116 based on the third order information obtained from the production management apparatus 200, and changes the setting of each processing unit.

The controller 100 determines whether or not the auto-setting for the third order has been completed and the printing plate replacement execution button 86 of the printing unit 20d used in the third order has been turned on (step D120). If it is determined that the auto-setting is completed and the printing plate replacement button 86 of the target printing unit 20d is turned on, the lifting unit 20M of the printing unit 20d used in the third order is lowered to enter the cylinder. (Step D130).
Thereby, the setting of the printing unit 2 is completed, the controller 100 starts the box making machine, and performs the third order (step D140).

  Accordingly, when the order is changed from the first order to the second order, the lifting unit 20M of the printing unit 20c used in the second order is lowered as soon as the second order auto-setting is completed, and the second order is promptly performed. Order production can be started. Also, when the order is changed from the second order to the third order thereafter, the lift unit 20M of the printing unit 20d used in the third order is lowered as soon as the third order auto-setting is completed, and promptly. Third order production can begin.

  In this way, during the production of the first order (current order), not only the second order (next order) but also the third order (next order) can be replaced with a stamp, Even if the number of production lots in the second order is small and there is no time to replace the printing plate of the fourth printing unit 20d for the third order during the production of the second order, When the order is changed to the third order, the production of the third order can be started immediately.

  As described above, depending on the allocation status of the printing unit 20, in addition to the printing plate exchange and the switch operation for the second order (next order) following the first order (current order), the second order (next order) or later. The printing plate can be changed and the switch can be operated for ordering. In this case, the orders after the second order can include not only the third order (orders after one another) but also subsequent orders such as the fourth order following the third order.

  For example, in the first order, the first printing unit 20a is used, in the second order, the second printing unit 20b is used, in the third order, the third printing unit 20c is used, and after the third order. When the fourth printing unit 20d is used in the fourth order, the second, third, and fourth printing units 20b, 20c, and 20d that are idle printing units during the production of the first order respectively. It is also possible to carry out stamp exchange for 2nd order, 3rd order and 4th order.

[3. Others]
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, A part of this embodiment is used in the range which does not deviate from the meaning of this invention, or a part is changed. Or can be implemented.

  For example, in the above embodiment, the printing plate exchange completed switch 86, the display means 87, 121, 131, the completion of auto-setting and the ON operation of the printing plate exchange completed switch 86 are used as conditions (and conditions), The control device 100 for starting the apparatus for ordering is provided, but even if only the printing plate exchanged switch 86 is provided, the operation signal of the printing plate exchanged switch 86 is subjected to various processes. Useable effects are obtained. Further, only the printing plate exchanged switch 86 and some display means may be provided, and the effect of improving the convenience for the operator and the effect of shortening the set time can be obtained.

  Further, in the above embodiment, the printing plate replacement switch 86 is provided alone. However, for example, a clamping switch 85 for tightening the printing plate on the plate cylinder 23 may also be used as a printing plate replacement switch. it can. In other words, the printing plate replacement is completed when the tightening operation of the tightening switch 85 is completed, so that the end operation of the tightening operation of the tightening switch 85 can be the ON operation of the switch that has been replaced. Further, it is not necessary to add the switch 86 having undergone the stamp replacement, and the operator does not need to turn on the switch 86 having undergone the stamp replacement, thereby reducing the cost, improving the convenience of the operator, shortening the set time, etc. The effect of can be promoted.

  The present invention relates to a box making machine for producing a box making sheet material that is simply assembled, and a corrugated cardboard sheet that has been subjected to printing and grooving or ruled line processing at the stage processed by the die-cut unit 4 but is not folded or bonded. The present invention can be widely applied to an apparatus that performs processing including printing on a cardboard sheet, such as a machine to be manufactured.

DESCRIPTION OF SYMBOLS 1 Paper feed part 2 Printing part 3 Paper discharge part 4 Die cut part 5 Folder gluer part 6 Counter ejector part 10 Sheet material for box making (blank for cardboard boxes)
DESCRIPTION OF SYMBOLS 10a Corrugated cardboard sheet 10G Sheet material group 10r Traveling track of corrugated cardboard sheet 10, 20a-20d Printing unit 20M Lifting unit 21 Ink chamber 22 Anilox roll 23 Plate cylinder (printing cylinder)
24 Impression cylinders 25a to 25d Guide roll 26 Suction box 70 Conveyor 71 Conveyor belt 72 Step 73 Work floor 81 Forward rotation button (operation button, operation switch)
82 Reverse button (operation buttons, operation switches)
83 Emergency stop button (operation button, operation switch)
84 One-round automatic rotation forward rotation button (operation button, operation switch)
85 Tightening buttons (operation buttons, operation switches)
86, 86a-86d Stamp-replaced button (operation button, stamp-replacement completed switch)
87, 87a-87d Revolving light as display means (indicating light) 100 Controller (control device)
111-116 Autoset mechanism 120 Operator panel 121 First monitor (monitor display) as display means
131 Second monitor as display means (monitor display)
200 Production management device

Claims (16)

A corrugated sheet processing apparatus including a processing unit that performs processing on a corrugated cardboard sheet, wherein the processing unit selectively includes a printing unit that performs printing on the corrugated cardboard sheet conveyed by a conveyor using a plurality of printing units. There,
Each of the plurality of printing units is provided with a printing plate exchanged switch that is turned on by an operator after the printing plate is exchanged.
A corrugated sheet processing apparatus comprising: display means for displaying that the corresponding printing unit has undergone printing plate replacement in response to an ON operation of the printing plate replacement performed switch. An auto-set mechanism for setting the processed part to correspond to the next order when the order is changed;
When the order is changed, the auto set mechanism is operated based on the order information input in advance, and the completion of the set by the auto set mechanism is determined, and the printing order of the next order among the plurality of printing units 2. The corrugated cardboard sheet processing apparatus according to claim 1, further comprising: a control device that starts the corrugated sheet processing apparatus for the next order when it is determined that the stamp exchange execution switch of the printing unit is turned on. apparatus. The cardboard of claim 1 or 2, wherein an idle printing unit that is not used among the plurality of printing units is separated from a cardboard sheet on which a plate cylinder of the idle printing unit is conveyed, and the printing plate can be replaced. Sheet processing equipment. The plurality of printing units are provided with operation switches used at the time of exchanging the printing plate, and the printing plate exchanged switch is arranged in the vicinity of the operation switches. The corrugated cardboard sheet processing apparatus according to Item. In the plurality of printing units, a plate cylinder operation switch for rotating each plate cylinder of the plurality of printing units as an operation switch used at the time of exchanging the printing plate, and a clamp for fastening the printing plate to the plate cylinder Equipped with a switch,
The clamp switch is also used as the printing plate exchanged switch, and an end operation of the clamping switch clamping operation is an ON operation of the printing plate exchanged switch. The corrugated cardboard sheet processing apparatus according to Item. The corrugated board processing apparatus according to any one of claims 1 to 5, wherein the display means is an indicator lamp. A monitor for monitoring the operation of the entire corrugated sheet processing apparatus;
The cardboard sheet processing apparatus according to claim 1, wherein the display unit is an image display displayed on the monitor. A monitor for monitoring the operation of the entire corrugated sheet processing apparatus;
8. The control device according to claim 2, wherein when there is an order interruption with respect to an order input in advance, the control device displays that fact on the monitor. 9. Corrugated sheet processing machine. The cardboard sheet processing apparatus according to any one of claims 1 to 8, further comprising a suction device that sucks and holds the cardboard sheets conveyed by the conveyor. The cardboard sheet processing apparatus according to claim 1, wherein the cardboard sheet processing apparatus is a box making machine. A processing unit that processes a corrugated cardboard sheet, the processing unit includes a printing unit that performs printing on a corrugated cardboard sheet that is conveyed by a conveyor by selectively using a plurality of printing units, and the processing is performed at the time of order change A set method in a corrugated cardboard sheet processing apparatus comprising: an auto set mechanism for setting a part to correspond to a next order; and a control device for controlling the processing unit including the auto set mechanism,
In the processing of the current order,
A printing plate exchange in an idle printing unit that is not used among the plurality of printing units and a switch operation for turning on a printing plate exchanged switch provided in each of the printing units after the printing plate exchange are performed. Advance preparation steps;
After that, the setting process by the auto-set mechanism based on the order information input in advance, the setting is completed, and the printing plate replacement execution switch of the printing unit to be replaced in the next order is turned on. A cardboard sheet processing apparatus setting method, comprising: an order change execution step in which a start process of the cardboard sheet processing apparatus for processing the next order is performed by the control device. 12. The corrugated cardboard sheet according to claim 11, wherein, in the pre-preparation step, in addition to the stamp exchange and switch operation for the next order following the current order, the stamp plate exchange and switch operation for the order after the next order are performed. How to set the processing equipment. 13. The corrugated sheet processing apparatus setting method according to claim 11 or 12, wherein upon receiving an ON operation of the printing plate replacement execution switch, a display means displays that the printing unit has been subjected to printing plate replacement. The printing plate exchanged switch is arranged in the vicinity of operation switches used at the time of printing plate exchange,
The method for setting a corrugated board processing apparatus according to any one of claims 11 to 13, wherein the switch operation is performed at a work position for exchanging the printing plate. In the order change execution step,
A cylinder removing process for separating each plate cylinder of the plurality of printing units from the cardboard sheet;
Only a printing unit to be used in the next order among the plurality of printing units, a cylinder placing process for bringing the plate cylinder into contact with a corrugated cardboard sheet,
The setting method of the corrugated-cardboard processing apparatus of any one of Claims 11-14 implemented by the said control apparatus. The cardboard sheet processing apparatus according to any one of claims 11 to 15, wherein the corrugated sheet processing apparatus is a box making machine.

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