JP4497554B2 - Corrugating machine and cardboard production management device - Google Patents

Description

  The present invention relates to a corrugating machine and a corrugated board production management device, and in particular, it is possible to carry out production according to each order regardless of the production failure that occurs when corrugated board sheets are produced according to many kinds of continuous orders. The present invention relates to a corrugating machine and a corrugated cardboard production management device.

  2. Description of the Related Art Conventionally, corrugating machines that produce continuous corrugated cardboard according to user orders with different production quantities and sizes of corrugated cardboard sheets and cut the corrugated cardboard into the size of the order are widely known. In this corrugating machine, according to different orders of the user, a slitter that cuts the cardboard in the transport direction or a scorer that attaches a ruled line in the transport direction to the cardboard is moved in the width direction perpendicular to the transport direction, thereby cutting position or The position of the ruled line is automatically changed.

  In recent years, it has become necessary to produce a variety of small quantities, and the number of short cardboard sheets produced has increased in the order of several sheets. When such short orders are continuous, the processing position such as the slitter or scorer cutting position is frequently changed each time the order is switched. For this reason, during the order switching time required for changing the machining position, a defective portion is generated on the cardboard, and the number of defective portions increases and the production efficiency decreases as the switching of short orders increases. In order to minimize this defective portion, it is required to shorten the order switching time.

  In order to shorten the order switching time, the applicant has proposed a servo control method in which each slitter and each scorer are individually moved in the width direction by a servo motor, and the machining position is changed in the shortest path (Patent Document). 1). By this proposal, the processing position of each slitter and each scorer can be changed at high speed, and it has become possible to cope with many kinds of continuous short orders.

Also, in order to deal with many kinds of continuous short orders, a corrugating machine was proposed in which a plurality of order switching points are tracked in parallel, and the operation control of the slitter scorer and the cutoff device is executed separately (patent) Reference 2). Specifically, a plurality of order switching points representing positions at which the contents of each order are switched are tracked in parallel in the cardboard conveyance direction, and the current position of each order switching point is the operating position of the slitter scorer or the cutoff device. An operation command is generated when the value is reached. Thereby, even if the distance between the plurality of order switching points is short, the slitter scorer and the cutoff device can operate.
Japanese Patent Laid-Open No. 2004-243643 JP 2007-152691 A

  Both of the above proposals control the operation of the slitter scorer, etc., in order to reduce defective parts that occur with the order switching time of the slitter scorer and cut-off device disposed downstream of the double facer exit in the cardboard transport direction. Is to cope with many kinds of continuous orders. However, both of the above proposals deal with this production failure in the event that a cardboard production failure occurs due to paper replacement failure, bonding failure, tension failure, thermal abnormality, etc. upstream from the exit of the double facer. No consideration is given to securing the order to be executed. In other words, if a defective production part that occurs upstream from the exit of the double facer is assigned to the production of a specific order, the entire order may become defective, and production according to the order according to the original production plan is impossible. The problem was left.

  Therefore, the present invention provides a corrugated structure that can ensure production according to each order in a large number of consecutive orders even when a production failure other than a failure that occurs with an order switching time such as a slitter scorer occurs. It is an object of the present invention to provide a machine and its production management device.

[First Invention Aspect and Specific Embodiments]
In order to achieve the above object, a first aspect of the invention according to claim 1 is a production end for producing continuous corrugated cardboard from a base paper, and a corrugated cardboard sheet is produced by subjecting the continuous corrugated cardboard to processing such as cutting. In a corrugating machine provided with a processing end to perform, a slitter scorer that cuts or gives ruled lines in the transport direction to the continuous cardboard, and a cut-off device that cuts in a width direction perpendicular to the transport direction; A removal device for removing defective corrugated cardboard sheets, for switching the size and production quantity of corrugated cardboard sheets for each order and each order according to a processing device line arranged at the processing end and a plurality of consecutive orders. A plan management unit for creating a production process plan including a planned switching position on the cardboard, and the production process plan When switched predetermined position on the ball has reached a predetermined switching reference position, a machining control unit for controlling the processing position where cutting or borders provided by at least the slitter scorer is performed, generated in the production end Until the defective production part reaches the switching reference position, a defect detection unit for detecting the occurrence of the production defective part and an operator's operation for instructing the removal device to remove the defective part existing at the processing end. When the possible first removal operation unit and the defect detection unit detect the occurrence of a defective production part, the order in which the defective production part is to be allocated is determined from the plurality of consecutive orders, A process in which the defective production part is removed by the removal device for the determined order is added to the production process plan and the defective production part. In the production process plan, the production process of the corrugated cardboard sheet that was scheduled to be produced in the production process plan is lowered in the production process plan, and the planned switching position of the order following the order determined in accordance with the length of the defective production part is determined in the production process plan. A production plan change unit for changing , wherein the plan management unit controls the operation of the removal device so as to remove a defective portion when the first removal operation unit is operated, and the switching reference position When the first removal operation unit is operated when there is an order shorter than the distance between the two positions between the position of the cut-off device and the arrangement position of the cut-off device, The removal of defective parts by is prohibited . Further, according to one aspect of the first aspect of the present invention , there is provided means for generating information representing a current position of the defective production portion detected by the defect detection unit by detecting a length by which the continuous cardboard is conveyed. The production plan change unit, when the defect detection unit detects the occurrence of a production failure portion, based on the created production process plan and information indicating the current position of the produced production failure portion In this configuration, an order to which the production failure portion is to be assigned is determined from the plurality of consecutive orders.

  The processing device line according to the first aspect of the present invention may include other processing devices arranged upstream of the slitter scorer in the transport direction in addition to the slitter scorer, the cutoff device, and the removing device. Further, the slitter scorer is not limited to one, and may be configured to operate by switching a plurality of units, or may be configured to operate a plurality of units simultaneously.

  The plan management unit according to the first aspect of the invention has a production process plan every time cutting of each corrugated cardboard sheet by the cut-off device is completed, in addition to a configuration in which a production process plan is created at once for all of a large number of orders set for input. It is also possible to use a configuration in which these are sequentially created. Further, the plan management unit may be configured by a control unit in which at least a part of the functions of the processing control unit is incorporated, in addition to the control unit separate from the processing control unit.

  The switching reference position of the first aspect of the invention is not limited to being determined in advance in relation to the time required for positioning the processing position of the slitter scorer, and when another processing apparatus is arranged upstream of the slitter scorer. Further, it may be determined in advance in relation to the operation delay time of other processing apparatuses.

  The defect detection unit according to the first aspect of the invention is not limited to being arranged close to the position where the defective production part occurs, and if the defective production part is detected before reaching the switching reference position, the production You may arrange | position in the position away from the generation | occurrence | production position of a defective part.

  The production plan change unit according to the first aspect of the invention may be configured by a control unit in which at least a part of the functions of the plan management unit is incorporated, in addition to the control unit separate from the plan management unit. good.

  The first aspect of the invention is applied to a specific aspect embodied with respect to the switching reference position. This specific aspect is determined in advance so that the switching reference position is positioned upstream of the slitter scorer from the arrangement position of the slitter scorer by a distance corresponding to the time required for positioning the processing position of the slitter scorer. It is the composition which is.

One aspect of the first aspect of the invention is a specific aspect of a configuration for generating information indicating a current position of a defective production portion, and the means for generating includes a pulse signal as the continuous cardboard is conveyed. And a counter that counts the pulse signal, and generates information indicating the current position of the defective production portion according to the count contents of the counter. The invention according to claim 2 is a specific embodiment embodied with respect to the total length (order length) of the corrugated cardboard sheets produced according to each order. In this specific aspect, the plan management unit, when a plurality of orders in which the total length of the total number of cardboard sheets to be produced is shorter than the distance from the switching reference position to the arrangement position of the cutoff device, The production process plan is created for a plurality of consecutive orders.

One aspect of the first aspect of the invention is a specific aspect that is embodied with respect to the conveyance speed downstream from the switching reference position. In this specific aspect, the plan management unit is configured to control the conveyance speed of the continuous cardboard, and the conveyance speed of the cardboard downstream from the switching reference position in the conveyance direction is a predetermined constant speed. It is the structure which controls to become.

In a specific aspect of the first aspect of the invention , the conveyance speed downstream from the switching reference position is controlled so as to be constant regardless of each order. In this regard, the first aspect of the invention is not limited to a configuration in which the conveyance speed downstream from the switching reference position is constant, but also includes a configuration in which the conveyance speed is changed for each order existing downstream from the switching reference position. It is a waste. Further, the constant transport speed downstream from the switching reference position may be a transport speed at which all orders existing downstream from the switching reference position can be executed. Preferably, the constant transport speed is set to the fastest transport speed at which all orders existing downstream from the switching reference position can be executed.

  The first aspect of the invention is applied to a specific aspect that is embodied with regard to the configuration of the defect detection unit and the arrangement position thereof. In this specific aspect, the failure detection unit includes a paper splice failure detector for detecting a splice failure of the base paper at the production end, and the paper splice failure detector is the switching reference position in the transport direction. It is the structure arrange | positioned in the position of a more upstream side.

  The first aspect of the invention is applied to a specific embodiment embodied with respect to a plurality of detectors at the production end. In this specific aspect, the defect detection unit includes a plurality of detectors arranged close to the arrangement positions of a plurality of production apparatuses that produce cardboard at the production end.

A 1st invention aspect is applied to the specific aspect materialized regarding the range by which a production process plan is created. In this specific aspect, the failure detection unit includes a paper splice failure detector for detecting a splice failure of the base paper at the production end, and the paper splice failure detector is the switching reference position in the transport direction. It is arranged at a position on the more upstream side, and the plan management unit is located between a plan start position determined in advance upstream from the arrangement position of the paper splice defect detector in the transport direction and the arrangement position of the cutter-off device. This is a configuration for creating a production process plan for existing cardboard.

A 1st invention aspect is applied to the specific aspect materialized regarding the plan start position. In this specific aspect, the plan start position is an upstream position close to the arrangement position of the paper splice defect detector in the transport direction.

The invention according to claim 3 is a specific embodiment embodied with respect to the arrangement position of the first removal operation unit. This specific aspect is a configuration in which the first removal operation unit is arranged in the vicinity of the arrangement position of the cutoff device.

The invention according to claim 4 is a specific embodiment embodied with respect to the defective removal operation section at the production end. This specific aspect includes a second removal operation unit that can be operated by an operator to instruct the removal device to remove a defective portion existing at the production end, and the plan management unit includes the second removal operation unit. A tracking means for tracking the current position of the defective portion from the arrangement position of the second removal operation section by detecting the length of the continuous cardboard transported when the removal operation section is operated; The operation of the removing device is controlled so that the defective portion is removed when the current position of the defective portion tracked by the tracking means reaches the arrangement position of the removing device. Moreover, the invention which concerns on Claim 5 is the specific aspect materialized regarding the arrangement position of the 2nd removal operation part. This specific aspect is a configuration in which the second removal operation section is disposed in the vicinity of the entrance of the double facer disposed at the production end.

The invention according to claim 6 is a specific aspect embodied with respect to the relationship between the second removal operation unit and the production plan change unit. In this specific aspect, when the second removal operation unit is operated, the production plan change unit sets the defective part, which is instructed to be removed by the operation of the second removal operation unit, as the defective production part. Determining the order to which the commanded defective portion is to be assigned from the plurality of consecutive orders, and removing the commanded defective portion by the removing device for the determined order. In addition to the plan, the production process of the corrugated cardboard sheet that was scheduled to be produced by the commanded defective part is lowered in the production process plan, and the determined order is determined according to the length of the commanded defective part. In the configuration, the planned switching position of the subsequent order is changed in the production process plan.

The first aspect of the invention is applied to a specific aspect embodied with respect to the stacker apparatus. In this specific aspect, the processing device line includes a stacker device that sequentially stacks the corrugated cardboard sheets cut by the cut-off device, and the plan management unit produces the corrugated cardboard in a plurality of consecutive orders. A production process plan is created so as to be executed first from an order with a larger sheet size, and the stacker device sequentially stacks smaller cardboard sheets with the larger cardboard sheets facing down.

[Second Invention Aspect and Specific Embodiments]
In order to achieve the above object, a second aspect of the invention according to claim 7 is a production end for producing continuous corrugated cardboard from a base paper, and a corrugated cardboard sheet is produced by subjecting the continuous corrugated cardboard to processing such as cutting. A slitter scorer that cuts or gives ruled lines to the continuous cardboard, a cut-off device that cuts in the width direction perpendicular to the transport direction, and a defective cardboard A sheet removing device is a production management device of a corrugating machine arranged at the processing end, and switches the size and the production quantity of the corrugated sheet for each order and each order according to a plurality of consecutive orders. A plan management unit for creating a production process plan including a planned switching position on the cardboard, and the cardboard on the cardboard according to the production process plan When switching scheduled position reaches a predetermined switching reference position, at least the slitter and machining control unit for controlling the processing position to grant the cutting or borders by Koala, production defective portion generated in the production end A first defect that can be operated by an operator to instruct the removal device to remove the defective portion existing at the machining end and a defect detecting portion that detects the occurrence of the defective production portion before reaching the switching reference position . And when the defect detection unit detects the occurrence of a defective production part, an order to which the defective production part is to be allocated is determined from the plurality of consecutive orders, and the determined order is determined. A process for removing the defective production part by the removing device is added to the production process plan and produced by the defective production part. A production plan in which the production process of the corrugated cardboard sheet that has been scheduled is carried down in the production process plan, and the planned switching position of the order following the determined order is changed in the production process plan according to the length of the defective production part. A change unit , wherein the plan management unit controls the operation of the removal device so as to remove the defective portion when the first removal operation unit is operated, and the cut-off from the switching reference position When the first removal operation unit is operated when there is an order shorter than the distance between the two positions before the arrangement position of the device, the plan management unit can detect the defective portion by the removal device. Prohibit removal .

Further, according to one aspect of the second aspect of the invention , there is provided means for generating information indicating a current position of the defective production portion detected by the defect detection unit by detecting a length by which the continuous cardboard is conveyed. The production plan change unit, when the defect detection unit detects the occurrence of a production failure portion, based on the created production process plan and information indicating the current position of the produced production failure portion In this configuration, an order to which the production failure portion is to be assigned is determined from the plurality of consecutive orders.

The second aspect of the invention is implemented in various aspects, similar to the first aspect of the invention, with respect to the configuration common to the first aspect of the invention. For example, the plan management unit, the processing control unit, and the production plan change unit according to the second aspect of the present invention may be configured by a single control unit or may be configured by separate control units.

The second aspect of the invention is applied to a specific aspect that is embodied with respect to the conveyance speed downstream from the switching reference position. In this specific aspect, the plan management unit is configured to control the conveyance speed of the continuous cardboard, and the conveyance speed of the cardboard downstream from the switching reference position in the conveyance direction is a predetermined constant speed. It is the structure which controls to become.

In a specific aspect of the second aspect of the invention , the conveyance speed downstream from the switching reference position is controlled so as to be constant regardless of each order. In this regard, the second aspect of the invention is not limited to a configuration in which the conveyance speed downstream from the switching reference position is constant, but includes a configuration in which the conveyance speed is changed for each order existing downstream from the switching reference position. .

The invention according to claim 8 is a specific embodiment embodied with respect to the defective removal operation section at the production end. This specific aspect includes a second removal operation unit that can be operated by an operator to instruct the removal device to remove a defective portion existing at the production end, and the plan management unit includes the second removal operation unit. A tracking means for tracking the current position of the defective portion from the arrangement position of the second removal operation section by detecting the length of the continuous cardboard transported when the removal operation section is operated; The operation of the removing device is controlled so that the defective portion is removed when the current position of the defective portion tracked by the tracking means reaches the arrangement position of the removing device.

The invention according to claim 9 is a specific embodiment embodied with respect to the relationship between the second removal operation unit and the production plan change unit. In this specific aspect, when the second removal operation unit is operated, the production plan change unit sets the defective part, which is instructed to be removed by the operation of the second removal operation unit, as the defective production part. Determining the order to which the commanded defective portion is to be assigned from the plurality of consecutive orders, and removing the commanded defective portion by the removing device for the determined order. In addition to the plan, the production process of the corrugated cardboard sheet that was scheduled to be produced by the commanded defective part is lowered in the production process plan, and the determined order is determined according to the length of the commanded defective part. In the configuration, the planned switching position of the subsequent order is changed in the production process plan.

In order to achieve the above object, a specific embodiment includes a production end for producing continuous corrugated cardboard from a base paper, and a processing end for producing a corrugated cardboard sheet by performing processing such as cutting on the continuous corrugated cardboard. A slitter scorer that cuts or applies ruled lines to the continuous cardboard, a cut-off device that cuts in the width direction perpendicular to the transport direction, and removes defective cardboard sheets. A corrugating machine production management method in which a removing device is arranged at the processing end, and the corrugated machine is configured to switch the size and the production quantity of each corrugated sheet according to a plurality of consecutive orders and the order. A plan creation step for creating a production process plan including a planned switching position, and on the cardboard according to the production process plan When switching scheduled position reaches a predetermined switching reference position, a positioning step for controlling the processing position to grant the cutting or borders by at least the slitter scorer, production defective portion generated in the production end, A detection step for detecting the occurrence of a defective production part until the switching reference position is reached, and when the occurrence of a defective production part is detected by the detection step, the production failure from the plurality of consecutive orders. A determination step for determining an order to which a part is to be assigned; and a process for removing the defective production part by the removing device for the order determined by the determination step, and adding the defective production part. The production process plan for corrugated sheet production that was scheduled to be produced by Deferred, and a changing step of changing in the production process planning the switching expected position of the order following the determined order in accordance with the length of the production defective part.

In order to achieve the above object, another embodiment of the present invention includes a production end that produces continuous corrugated cardboard from a base paper, and a corrugated cardboard sheet produced by subjecting the continuous corrugated cardboard to processing such as cutting. A slitter scorer that cuts or gives ruled lines in the conveying direction to the continuous cardboard, a cut-off device that cuts in the width direction perpendicular to the conveying direction, and a defective cardboard sheet. According to a plurality of consecutive orders, the size and production quantity of the corrugated cardboard sheet for each order and each order are switched to a computer used in the production management device of the corrugating machine disposed at the processing end. A plan creating step for creating a production process plan including a planned switching position on the cardboard for When switched predetermined position on the corrugated board has reached a predetermined switching reference position in accordance with a positioning step for controlling the processing position to grant the cutting or borders by at least the slitter scorer, generated in the production end A detection step for detecting the occurrence of a defective production portion until the defective production portion reaches the switching reference position, and when the occurrence of the defective production portion is detected by the detection step, the plurality of consecutive orders A determination step for determining an order to which the defective production portion is to be assigned, and a process for removing the defective production portion by the removal device for the order determined by the determination step, and adding to the production process plan , The production process of corrugated cardboard sheets that was scheduled to be produced due to the production failure part Deferred in serial production plan, to realize a changing step of changing in the production process planning the switching expected position of the order following the determined order in accordance with the length of the production defective part.

The above-described embodiment is implemented in various aspects, similar to the first aspect, with respect to the configuration common to the first aspect.

[Effects of the 1-2 inventive aspect]
In the first to second aspects of the invention, when occurrence of a defective production portion is detected, an order to which the production defective portion is to be allocated is determined from a plurality of consecutive orders, and the determined order is determined. And adding a process for removing the defective production part by the removing device to the production process plan, and lowering the production process of the corrugated cardboard sheet that was scheduled to be produced by the defective production part in the production process plan. The order switching position of the order subsequent to the determined order is changed in the production process plan in accordance with the length of the production process. With this configuration, the initial production process plan is automatically changed according to the defective production portion that has occurred upstream from the switching reference position, so that the originally planned continuous order becomes incomplete due to the occurrence of a failure. This ensures that the production of corrugated sheet on each order is ensured.

In addition, the first to second aspects of the invention include a first removal operation unit that can be operated by an operator to instruct the removal device to remove a defective portion existing at the machining end, and the control unit includes: , Controlling the operation of the removing device so as to remove the defective portion when the first removing operation unit is operated, and the two of the two between the switching reference position and the arrangement position of the cutoff device. When the first removal operation unit is operated when there is an order shorter than the distance between the positions, the plan management unit prohibits the removal of the defective portion by the removal device. When the operator visually detects a defective part and operates the first removal operation unit at the processing end, the positioning operation of the processing position of the slitter scorer according to the next order starts at the time of operation of the first removal operation unit. Since the production process cannot be changed, the removal operation according to the operation of the first removal operation unit is prohibited according to the specific embodiment. This prohibition control prevents the short order processing itself from disappearing due to the sheet removal operation, and prevents the production operation by each device at the processing end from being out of synchronization with the production of the order.

[Effects of specific embodiments]
A specific aspect of the first aspect of the invention includes a configuration for generating information indicating the current position of the defective production portion. With this configuration, the production plan changing unit can accurately determine the order to which the defective production portion is to be assigned.

The specific aspect of claim 2 is the case where the plan management unit has a plurality of orders in which the total length of the total number of cardboard sheets produced is shorter than the distance from the switching reference position to the arrangement position of the cutoff device. In addition, the production process plan is created for the plurality of consecutive orders. By combining the configuration of the above specific mode for creating a production process plan for a plurality of continuous short orders with the production plan changing unit, even when a defective production portion occurs, the production according to the short order is ensured.

A specific aspect of the first aspect of the invention is a configuration in which the conveyance speed of the cardboard downstream from the switching reference position in the conveyance direction is controlled to be a predetermined constant speed. With this configuration, even when a plurality of different orders are continuous, the production process plan is created by a simple process based on a constant conveyance speed, and the processing burden on the plan management unit that creates the production process plan is reduced.

  In a specific aspect of the first aspect of the invention, the failure detection unit includes a paper splice failure detector for detecting a splice failure of the base paper at the production end, and the paper splice failure detector includes the conveyance direction. In FIG. 2, the position is arranged at a position upstream of the switching reference position. With this configuration, it is possible to detect the latest failure status such as the length of the splicing failure portion at a position upstream from the switching reference position, and to create a production process plan reflecting this latest failure status. In addition, a specific aspect of the first aspect of the invention is a configuration in which the defect detection unit includes a plurality of detectors arranged in proximity to an arrangement position of a plurality of production apparatuses that produce cardboard at the production end. Therefore, it is possible to create a production process plan that deals with a plurality of defective production portions that occur at different locations at the production end.

According to a specific aspect of the first aspect of the invention , the plan management unit from the plan start position predetermined upstream of the placement position of the paper splice defect detector in the transport direction to the placement position of the cutoff device. It is the structure which produces the production process plan of the cardboard which exists between. A specific aspect of claim 7 is a configuration in which the plan start position is an upstream position close to the arrangement position of the paper splice defect detector in the transport direction. With these configurations, it is necessary to create a production process plan for only the minimum necessary order, and then change the original production process plan, compared to the case where a production process plan is created for all of a plurality of orders at once. Even if it occurs, the change process can be completed within a limited range, and the processing burden on the plan management unit is reduced.

According to a specific aspect of the present invention, since the first removal operation unit is arranged close to the arrangement position of the cutoff device, the operator can check whether there is a defective portion immediately before the cutoff device. It is possible to quickly operate the first removal operation unit while visually confirming the above.

The specific aspect of Claim 4 or Claim 8 is provided with the 2nd removal operation part which an operator can operate in order to instruct | indicate the removal apparatus which removes the defective part which exists in the said production end, The said plan management And a tracking unit that tracks a current position of the defective portion from an arrangement position of the second removal operation unit when the second removal operation unit is operated, and the defect tracked by the tracking unit When the current position of the part reaches the arrangement position of the removal device, the operation of the removal device is controlled so as to remove the defective portion. Even when the operator visually detects a defective part at the production end and operates the second removal operation unit, the production process plan can be changed according to the detected defective part. According to the specific aspect, it is possible to reliably remove the found defective portion in accordance with the operation of the second removal operation unit.

According to a specific aspect of the fifth aspect of the present invention, since the second removal operation unit is disposed in the vicinity of an entrance of the double facer disposed at the production end, the operator can detect a defect immediately before the entrance of the double facer. The second removal operation unit can be quickly operated while visually confirming the presence or absence of the portion.

According to a specific aspect of claim 6 or claim 9 , when the second removal operation unit is operated, the production plan change unit is a defect in which removal is instructed by the operation of the second removal operation unit. Using the part as the production defective part, an order to which the commanded defective part is to be assigned is determined from the plurality of consecutive orders, and the commanded defective part is determined by the removal device for the determined order. The process to be removed is added to the production process plan and the production process of the corrugated cardboard sheet, which was scheduled to be produced by the commanded defective part, is lowered in the production process plan, according to the length of the commanded defective part. Thus, the planned switching position of the order following the determined order is changed in the production process plan. When the operator visually detects a defective part at the production end and operates the second removal operation unit, the production process plan can be changed according to the detected defective part. According to the aspect, the production plan changing unit can change the production process plan by using the found defective part as a production defective part, and can quickly cope with the removal command according to the operation of the second removal operation unit.

According to a specific aspect of the first aspect of the invention , the processing device line includes a stacker device that sequentially stacks the corrugated cardboard sheets cut by the cut-off device, and the plan management unit includes a plurality of consecutive orders. The production process plan is created so that the order of the corrugated cardboard sheets to be produced is executed first, and the stacker device sequentially loads the smaller corrugated cardboard sheets with the large corrugated board sheets facing down. It is a configuration. With this configuration, it is not necessary to move the cardboard sheets loaded on the stacker device from the stacker device for each order, and the cardboard sheets produced according to various types of continuous orders are continuously loaded on the stacker device. Is possible.

[Embodiment]
An embodiment in which the present invention is applied to a corrugating machine for producing double-sided corrugated cardboard sheets will be described below with reference to the accompanying drawings. For the sake of convenience, the corrugating machine according to the present embodiment is configured to produce a corrugated sheet having one kind of flute, but selectively produces corrugated sheets having two or more kinds of corrugated sheets. The structure which can do is also possible.

《Mechanical configuration》
FIG. 1 shows the overall appearance of the corrugating machine 1 of the present embodiment. The corrugating machine 1 includes a production end 3 that produces continuous corrugated cardboard from a base paper, and a processing end 5 that performs processing such as cutting the continuous corrugated cardboard to produce corrugated cardboard sheets. The production end 3 is composed of a number of production apparatus lines. For example, in the present embodiment, the production end 3 is composed of a mill roll stand 110, a single facer 120, a bridge unit 130, a glue machine 140, and a double facer 150. ing. The production apparatus such as the mill roll stand 110 is an example of the production apparatus of the present invention. The processing end 5 is composed of a number of processing device lines. For example, in this embodiment, the processing end 5 is composed of a slitter scorer 160, a cutoff device 170, a removal device 180, and a stacker device 190. The slitter scorer 160, the cutoff device 170, the removal device 180, and the stacker device 190 are examples of the slitter scorer, the cutoff device, the removal device, and the stacker device of the present invention.

<Composition of production end>
FIG. 2 shows a detailed configuration of the production end 3. The mill roll stand 110 (110a to 110c) is configured such that paper rolls 11 (11a to 11c) each having a base paper wound in a roll shape are mounted on both sides in the front-rear direction. On the upper part of the mill roll stand 110, a splicer 13 for performing paper splicing is provided. When paper is fed from one paper roll 11, the other paper roll 11 is mounted and paper splicing preparation is made. When the remaining base paper of one paper roll 11 is reduced, the splicer 13 joins the base paper of the other paper roll 11. Then, while the base paper is being supplied from the other paper roll 11, one paper roll 11 is mounted to prepare for paper splicing. In this way, the base paper is sequentially spliced and continuously fed from the mill roll stand 110 toward the downstream side. When the base paper of the paper roll 11 is spliced, the operator performs an operation of attaching a thin film of aluminum tape to the spliced portion in the splice head portion of the splicer 13.

  Each base paper is called a back liner, a core, and a front liner depending on the application. The mill roll stand 110 includes a back liner mill roll stand 110a, a center core mill roll stand 110b, and a front liner mill roll stand 110c according to the purpose of the paper to be supplied. The back liner mill roll stand 110a supplies the back liner 15 to the single facer 120 from the back liner roll 11a around which the back liner 15 is wound. The center core mill roll stand 110b supplies the center core 17 to the single facer 120 from the center core roll 11b around which the center core 17 to be rolled is wound. The front liner mill roll stand 110c supplies the front liner 19 to the double facer 150 from the front liner roll 11c around which the front liner 19 is wound.

  The single facer 120 includes an upper roll 21, a lower roll 23, and a gluing device 25. Concave portions and convex portions extending in the axial direction are alternately formed on the peripheral surfaces of the upper roll 21 and the lower roll 23. The upper roll 21 and the lower roll 23 are installed so that the concave portions and the convex portions thereof mesh with each other, and the core 17 supplied between the two from the center mill roll stand 110b at both meshing portions. It is comprised so that it may process in a wavy shape.

  The gluing device 25 is installed on the downstream side in the rotation direction of the meshing portion of the upper roll 21 and the lower roll 23 on the peripheral surface of the upper roll 21, and has a function of gluing the top of the core 17. The back liner 15 supplied from the back liner mill roll stand 110 a is carried along the peripheral surface of the upper roll 21 and bonded to the core 17 that has been wave-processed, whereby a single-sided cardboard 27 is formed. The single-sided cardboard 27 has a shape in which stepped mountains extending in the width direction are arranged in parallel in the transport direction on one side of the back liner 13.

  A take-up conveyor 29 is installed obliquely above the single facer 120 on the downstream side in the conveying direction. The take-up conveyor 29 is composed of a pair of endless belts, and has a function of holding the single-sided cardboard 27 formed in the single facer 120 and conveying it to the bridge unit 130. The bridge part 130 temporarily retains the single-sided cardboard 27 in order to absorb the speed difference between the single facer 120 and the processing apparatus after the double facer 150. The bridge unit 130 includes a brake stand 31 for braking the conveyance of the single-sided cardboard 27 pulled by the double facer 150. A two-stage heater 33 is disposed downstream of the brake stand 31 and is configured to heat the single-sided cardboard 27 and the front liner 19 respectively. The two-stage heater 33 functions to give the paper a heat quantity necessary for bonding before the single-sided cardboard 27 and the front liner 19 are bonded by the glue machine 140 and the double facer 150.

  The glue machine 140 is disposed between the bridge portion 130 and the duffel facer 150 and includes a gluing device 35 that applies glue to the top of the corrugated mountain of the single-sided cardboard 29. The glue machine 140 is configured to supply the glued single-sided cardboard 27 and the front liner 19 to the entrance of the double facer 150.

  The double facer 150 is formed by bonding a single-sided cardboard 27 and a front liner 19 to form a double-sided cardboard 37. The double facer 150 includes a hot plate 39, a weight roll 41, an upper belt 43, and a lower belt 45. The hot plate 39 is a metal hollow box, and its upper surface is maintained at a high temperature by internal heating steam. A plurality of the hot plates 39 are arranged in parallel in the conveying direction of the double-sided cardboard 37, and their upper surfaces are configured to guide and heat the lower surface of the double-sided cardboard 37.

  The weight roll 41 is installed above the hot plate 39 so that the axis is orthogonal to the transport direction. A plurality of weight rolls 41 are juxtaposed in the conveying direction of the double-sided cardboard 37 and presses the double-sided cardboard 37 toward the hot plate 39 from above. The upper belt 43 and the lower belt 45 convey the double-sided corrugated cardboard 37 from above and below. The upper belt 43 and the lower belt 45 are driven by a drive motor 47 to convey the double-sided cardboard 37 at a constant speed. The double facer 150 is an example of the double facer of the present invention.

<Processing end configuration>
FIG. 3 shows a detailed configuration of the machining end 5. The slitter scorer 160 is arranged in the width direction to process a large number of slitters arranged in the width direction orthogonal to the conveyance direction in order to cut the wide double-sided cardboard 37 in the conveyance direction, and a ruled line extending in the conveyance direction. With a large number of scorers. In order to cut the double-sided cardboard 37 to a predetermined width according to each order, a plurality of slitters among a plurality of slitters are selectively operated and positioned in the width direction. Further, in order to process ruled lines at intervals in the width direction according to each order, a plurality of scorers out of a large number of scorers are selectively operated and positioned in the width direction. Each scorer is configured to be positioned and controlled in the vertical direction in order to process a ruled line having a depth of each order.

  Each scorer of the slitter scorer 160 is composed of a pair of an upper ruled line roll 49 and a lower ruled line roll 51 that are arranged to face each other with the double-sided cardboard 37 therebetween. The upper ruled line roll 49 and the lower ruled line roll 51 are configured to be movable in the width direction and the vertical direction, respectively. Convex portions that are continuous in the circumferential direction are formed on the circumferential surface of the upper ruled line roll 49. Concave portions that are continuous in the circumferential direction are formed on the circumferential surface of the lower ruled line roll 51.

  Each slitter of the slitter scorer 160 is composed of a pair of an upper slitter knife 53 and a lower slitter knife 55 that are arranged opposite to each other with the double-faced cardboard 37 sandwiched between the upper ruled line roll 49 and the lower ruled line roll 51. The upper slitter knife 53 and the lower slitter knife 55 are configured to be movable in the width direction and the vertical direction, respectively. Each of the upper slitter knife 53 and the lower slitter knife 55 has a disk shape and has a sharp outer peripheral portion, and is configured to be rotated at a high speed.

The cut-off device 170 cuts the double-sided cardboard 37 cut in the transport direction by the slitter scorer 160 in the width direction to form a plate-like cardboard sheet 57. The cut-off device 170 includes an upper knife cylinder 59 and a lower knife cylinder 61 whose rotations are controlled in order to cut the double-sided cardboard 37 to a predetermined length according to each order. The upper knife cylinder 59 and the lower knife cylinder 61 are arranged to face each other with the double-sided cardboard 37 interposed therebetween, and are configured to rotate in directions opposite to each other. The peripheral surface of the upper knife cylinder 59 is provided with a knife extending in the width direction, and the peripheral surface of the lower knife cylinder 61 is provided with a knife extending in the width direction. When the upper knife cylinder 59 and the lower knife cylinder 61 are rotated to engage both knives, the double-sided cardboard 37 is configured to be cut in the width direction.

  On the downstream side of the cut-off device 170, a removal device 180 provided with a transport path switching member 63 is provided. The conveyance path switching member 63 swings in the vertical direction with the downstream side as a fulcrum, protrudes into the conveyance path of the cardboard sheet 57 when moving upward, and is configured to guide, for example, a defective cardboard sheet downward. A storage box 65 for storing defective corrugated cardboard sheets is installed below the transport path switching member 63. The removal device 180 including the transport path switching member 63 and the storage box 65 is an example of the removal device of the present invention.

  The stacker device 190 stacks the cardboard sheets 57 conveyed by the conveyor 67 and discharges them as products to the outside of the machine. The stacker device 190 is configured to automatically select an optimum pallet for stacking corrugated cardboard sheets having a size according to each order. In addition, the stacker device 190 is configured to automatically position a front stopper that regulates the stacking position of the cardboard sheets to be stacked according to the size of the cardboard sheets according to each order.

<Configuration of various production failure detectors>
In the present embodiment, a number of production failure detectors are arranged in order to detect production failures occurring in each production device at the production end. In the present embodiment, tension abnormalities, step formation abnormalities, thermal abnormalities, and paper splice defects are detected as production defects. Note that a production failure other than these production failures may be detected.

(Configuration of tension abnormality detector)
Produced when the back liner 15, the center core 17 and the front liner 19 fed out from the back liner mill roll stand 110a, the center core mill roll stand 110b and the front liner mill roll stand 110c, respectively, are not in a predetermined tension. Abnormalities such as warping occur on the cardboard. For this reason, in order to detect a tension abnormality of the back liner 15, the core 17 and the front liner 19, the tension abnormality detectors DTT1, DTT2, and DTT3 shown in FIG. 2 are connected to the back liner mill roll stand 110a, the core mill. The roll stand 110b and the front liner mill roll stand 110c are arranged close to each other.

  The tension abnormality detector DTT1 detects whether or not the braking force for braking the rotation of the back liner roll 11a is a predetermined value in order to detect the tension abnormality of the back liner 15. If the braking force is not a predetermined value, the detector DTT1 is configured to generate an abnormality detection signal while the tension abnormality occurs. Similarly, the tension abnormality detector DTT2 detects whether or not the braking force for braking the rotation of the center core roll 11b is a predetermined value in order to detect the tension abnormality of the center core 17. Further, the tension abnormality detector DTT3 detects whether or not the braking force for braking the rotation of the front liner roll 11c is a predetermined value in order to detect a tension abnormality of the front liner 19. If the braking force is not a predetermined value, the detectors DTT2 and DTT3 are configured to generate an abnormality detection signal while the tension abnormality occurs.

(Configuration of step formation abnormality detector)
The back liner 15 is bonded to the wave-processed core 17 to form a single-sided cardboard 27. The single-sided cardboard 27 has a shape in which stepped mountains extending in the width direction are arranged in parallel in the transport direction on one side of the back liner 13. The number of steps is required to be a predetermined number per fixed length in order to ensure the strength of the cardboard. For this reason, a step formation abnormality detector DTF shown in FIG. 2 is arranged in the vicinity of the outlet of the brake stand 31 in order to detect the formation of step abnormalities.

  The step formation abnormality detector DTF measures the number of steps formed on one side of the single-sided cardboard 27 per fixed length, and detects whether or not the number of steps is a predetermined number. If the number of steps is not a predetermined number, the detector DTF is configured to generate an abnormality detection signal while the step formation abnormality occurs.

(Configuration of temperature abnormality detector)
The two-stage heater 33 heats the single-sided cardboard 27 and the front liner 19. If this heating temperature is lower than a predetermined temperature, a bonding failure between the single-sided cardboard 27 and the front liner 19 may occur. For this reason, in order to detect abnormal temperatures of the single-sided cardboard 27 and the front liner 19 that pass through the second-stage heater 33, the temperature abnormality detector DTH shown in FIG. .

  The temperature abnormality detector DTH measures the temperatures of the single-sided cardboard 27 and the front liner 19 that pass through the two-stage heater 33, and detects whether or not the temperature is below a predetermined temperature. If the temperature is equal to or lower than the predetermined temperature, the detector DTH is configured to generate an abnormality detection signal while the temperature abnormality occurs.

(Configuration of paper splice defect detector)
When the base paper of the paper roll 11 is spliced, a thin aluminum tape is attached to the spliced portion. Since the strength of the corrugated cardboard is weak in the paper joint portion, it is necessary to avoid the production of the corrugated cardboard sheet including the paper joint portion. For this reason, in order to detect the paper splicing portion, the paper splice defect detector DTP shown in FIG. 2 is arranged in the vicinity of the outlet of the double facer 150. The paper splice failure detector may be arranged on the entrance side of the double facer 150. In this case, two splice fault detectors are used to detect the paper splice portion of the single-sided cardboard 27 and the splice portion of the front liner 19. Detector is required. On the other hand, since the paper splice failure detector DTP is arranged on the exit side of the double facer 150 in order to detect the splice portion of the double-sided cardboard 37, only one detector is required to detect the paper splice portion. .

  The paper splice failure detector DTP is composed of a metal sensor. In the double-sided cardboard 37, an eddy current generated at a paper spliced portion to which an aluminum tape is attached is sensed to detect whether or not a paper splice defect exists. If an eddy current is sensed, the detector DTP is configured to generate an abnormality detection signal while the paper splice failure exists.

  The tension abnormality detectors DTT1 to DTT3, the step formation abnormality detector DTF, the temperature abnormality detector DTH, and the paper splice defect detector DTP are examples of the defect detection unit of the present invention. The paper splice failure detector DTP is an example of a paper splice failure detector of the present invention. The detection function of these detectors is an example of the detection step of the present invention.

<Configuration of cardboard transport length detection device>
In the present embodiment, a first transport length detection device DL1 is provided in order to measure the length of the cardboard fed out from the single facer 120 and staying in the bridge portion 130. Further, a second transport length detection device DL2 is provided in order to track the position of the cardboard between the placement position of the paper splice failure detector DTP and the placement position of the cutoff device 170.

(Configuration of first transport length detection device)
The first conveyance length detection device DL1 is a non-adhesive material on the opposite side to the adhesion surface of the conveyance length measuring device DLS for measuring the conveyance length of the back liner 15 delivered from the splicer 13 and the center core 17 bonded to the back liner 15. A mark applying device DLP for applying a detection mark to the measurement start position on the surface, and a arrival detector DLE for detecting the detection mark applied to the measurement start position and generating an arrival detection signal. Yes.

  As shown in FIG. 2, the transport length measuring device DLS is disposed in the vicinity of the outlet of the splicer 13 that sends out the back liner 15. The mark applying device DLP is disposed in the vicinity of the outlet of the splicer 13 that sends out the core 17. The arrival detector DLE is disposed in the vicinity of the outlet of the two-stage heater 33. The measurement start position on the back liner 15 where the measurement is started by the transport length measuring device DLS is within the single facer 120 and the detection mark application position applied to the non-adhesion surface of the core 17 by the mark application device DLP. The arrangement positions of the transport length measuring device DLS and the mark applying device DLP are determined in advance so as to match. The transport length measuring device DLS starts the measurement of the transport length with reference to the time when the mark is applied to the core 17 by the mark applying device DLP, and the transport length measured until the arrival detection signal is generated, The length of the single-sided cardboard 27 staying in the bridge part 130 is obtained. The first transport length detection device DL1 periodically performs a transport length measurement operation and monitors the length of the single-sided cardboard 27 that stays.

(Configuration of second transport length detection device)
In order to track the current position of the cardboard with reference to the arrangement position of the cut-off device 170, the second transport length detection device DL2 drives the upper belt 43 and the lower belt 45 of the double facer 150 as shown in FIG. The drive motor 47 is connected to the drive motor 47 so that a continuous pulse signal is generated as the drive motor 47 rotates.

<Configuration of defect removal switch>
In the production end 3 of the corrugating machine 1 of this embodiment, when an operator visually finds a defect in the cardboard, a defect removal switch SSW on the production side that can be operated to remove the defective portion is shown in FIG. As described above, the double facer 150 is disposed near the entrance. The cardboard conveyed by the length (flow length) corresponding to the time during which the defect removal switch SSW is operated is removed by the operation of the removing device 180. The defect removal switch SSW is an example of a second removal operation unit of the present invention.

  In the processing end 5 of the corrugating machine 1 according to the present embodiment, when the operator visually detects a defective cardboard, a processing side defect removal switch KSW that can be operated to remove the defective portion is shown in FIG. Thus, it is disposed in the vicinity of the entrance of the cutoff device 170. The cardboard conveyed by the length (flow length) corresponding to the time during which the defect removal switch KSW is operated is removed by the operation of the removing device 180. The defect removal switch KSW is an example of the first removal operation unit of the present invention.

<Electrical configuration>
The electrical configuration of the corrugating machine 1 according to the present embodiment will be described below with reference to the accompanying drawings. FIG. 4 is a block diagram showing an electrical configuration of the corrugating machine 1 of the present embodiment. As shown in FIG. 4, in order to generally manage the production and processing of the double-sided cardboard 37 in the corrugating machine 1, a high-order management device 200 and a low-order management device 300 each composed of a known computer are provided.

<Configuration of host management device and production line control device>
The upper management apparatus 200 receives production basic data relating to all orders of a large number of orders to be executed by the corrugating machine 1 and stores them therein. Based on the stored production basic data, the host management device 200 creates an operation command plan for each production device arranged at the production end 3 and each machining device arranged at the machining end 5, and the upper face of the double facer 150. The speed command of the drive motor 47 that drives the belt 43 and the lower belt 45 is calculated.

  The basic production data includes data indicating the size of the corrugated cardboard sheet 57 for each order, the production quantity, the processing position of the slitter and scorer for producing the corrugated cardboard sheet 57 according to the order, the type of pallet selected by the stacker device 190, and the like. . In addition, the speed command of the drive motor 47 is for instructing the maximum speed among the speeds at which all orders can be efficiently executed. In the present embodiment, this speed command is the upper management apparatus 200. While all the orders entered in are being executed, a constant speed is commanded regardless of the type of order.

  The upper management apparatus 200 controls the production line 155 in order to control the operation of the production apparatus group 155 including the mill roll stand 110, the single facer 120, the bridge unit 130, the glue machine 140, the double facer 150, and the like according to the created operation command plan. The controller 210 is configured to supply an operation command for each production apparatus. The production line control device 210 is configured to control the operation of the drive mechanism 220 that drives each production device in accordance with an operation command. The drive mechanism 220 includes a drive mechanism that drives the splicer 13, a drive mechanism that drives the upper roll 21 and the lower roll 23, a drive mechanism that drives the take-up conveyor 29, a drive mechanism that drives the brake stand 31, and a two-stage heater 33. A heating mechanism for heating, a heating mechanism for heating the hot plate 39, and the like are included, and the configuration thereof is known.

  Further, the upper management apparatus 200 supplies an operation command plan related to a predetermined number of orders to the lower management apparatus 300 according to the order of execution among the operation command plans created for all orders, and the speed of the drive motor 47. The command is configured to be supplied to the lower management apparatus 300.

<Configuration of subordinate management device and its peripheral devices>
The lower management device 300 is configured to supply an operation command to the processing line control device 310 and to supply an operation command and the calculated speed command to the double facer control device 320. The double facer control device 320 is configured to control the drive and stop of the drive motor 47 in accordance with the supplied operation command, and to control the speed of the drive motor 47 to a constant speed in accordance with the calculated speed command. Yes.

(Configuration of processing line control device)
The processing line control device 310 includes a slitter scorer control device 330, a cutoff control device 340, a removal control device 350, and a stacker control device 360. The slitter scorer control device 330, according to the operation command supplied from the lower management device 300, the upper ruled line roll 49 and the lower ruled line roll 51 that constitute each scorer of the slitter scorer 160, the upper slitter knife 53 that constitutes each slitter, and the lower The driving motor 331 that rotates the slitter knife 55 is controlled to be driven and stopped. The slitter scorer control device 330 also includes a servo motor for positioning the processing positions in the width direction and the vertical direction of the pair of ruled line rolls 49 and 51 according to the processing position command supplied from the lower management device 300, and both slitter knives. The servomotor group 333 is controlled so as to be driven and stopped including a servomotor that performs vertical movements 53 and 55 and positioning of the machining position in the width direction. Since the control method of the slitter scorer 160 is known from Japanese Patent Application Laid-Open No. 2004-243643 filed earlier by the present applicant, its detailed description is omitted. The processing line control device 310 is an example of a processing control unit of the present invention. The function of the slitter scorer control device 330 is an example of the positioning step of the present invention.

  The cut-off control device 340 drives and stops the drive motor 341 that rotates the set of the upper knife cylinder 59 and the lower knife cylinder 61 of the cut-off device 170 according to the operation command and the cutting length command supplied from the lower management device 300. The rotational position is controlled. The cut-off control device 340 controls the drive motor 341 in accordance with a cutting length command for instructing the cutting length in the conveying direction of the corrugated cardboard sheet 57, thereby positioning the rotational positions of the knife cylinders 59 and 61, and the commanded cutting length. The cut-off device 170 has a function of cutting.

  The removal control device 350 is configured to control the operation of the drive mechanism 351 that drives the transport path switching member 63 of the removal device 180 in accordance with the operation command supplied from the lower management device 300.

  The stacker control device 360 selects one pallet from among a large number of pallets according to the operation command supplied from the lower management device 300, and operates the drive mechanism 361 that drives the stacker device 190 to position the front stopper. Is configured to control.

(Configuration of various memories)
The lower management apparatus 300 is connected to the program memory 370 and the work memory 380, respectively. The program memory 370 permanently stores programs such as the main control routine, the production failure processing routine, the paper splice failure processing routine, the production side removal operation processing routine, the processing side removal operation processing routine, and the production process plan change routine of the subordinate management apparatus 300. In addition, various setting values are fixedly stored. The work memory 380 temporarily stores the calculation processing result by the lower-level management device 300. For example, the work memory 380 temporarily stores the production process plan created by the lower-level management device 300.

  The lower management apparatus 300 tracks the current position of the defective portion detected by each of the tension abnormality detectors DTT1 to DTT3, the step formation abnormality detector DTF, the temperature abnormality detector DTH, and the paper splice defect detector DTP. In addition, a counter corresponding to each detector is incorporated. The subordinate management apparatus 300 also has a built-in counter corresponding to the switch SSW in order to track the current position of the defective portion designated by the operation of the defect removal switch SSW on the production side. Each counter is a cardboard that exists between the position of the cutoff device 170 and the position of the corresponding detector or switch SSW when the corresponding detector or switch SSW detects or designates the occurrence of a failure. The distance corresponding to the length of is set. Each counter is configured to be subtracted from the set distance in response to a pulse signal supplied from the second transport length detection device DL2. The current position of the defective portion detected or designated by each detector or switch SSW is indicated by the contents of each counter. However, strictly speaking, since the time point when the double-sided cardboard 37 is cut by the cut-off device 170 and the time point when a defect is detected or designated by each detector or the switch SSW are not synchronized, The distance subtracted from the distance between the arrangement position of the cutoff device 170 and the arrangement position of each detector or switch SSW by the distance by which the defective portion is conveyed from the designated time point to the cutting time point is the counter. Set to

(Connection configuration with various production failure detectors and transport length detectors)
The subordinate management apparatus 300 monitors tension occurrence detectors DTT1 to DTT3, a step formation abnormality detector DTF, a temperature abnormality detector DTH, and a paper splice defect detector DTP in order to monitor the occurrence of production defects in each production apparatus. And connected to each. The lower management apparatus 300 can determine the type of production failure and the length of production failure based on the abnormality detection signal supplied from each detector.

  The subordinate management apparatus 300 uses the first conveyance length detection device DL1 and the second conveyance length detection device DL2 to track the production failure occurrence position and the current position on the basis of the arrangement position of the cutoff device 170. Each is connected. A production failure occurrence position can be considered as a predetermined arrangement position of each detector at a location downstream of the bridge portion 130 where the single-sided cardboard 27 stays. For this reason, the production failure occurrence position detected by each of the tension abnormality detector DTT3, the step formation abnormality detector DTF, and the temperature abnormality detector DTH becomes the arrangement position of each detector. The disposition position of the splicing defect detector DTP is a tracking start position at which the splicer 13 detects a splicing defect and starts tracking the current position of the splicing defect portion.

  The production failure occurrence position detected by the tension abnormality detectors DTT1 and DTT2 is based on the arrangement position of each detector and the staying length of the single-sided cardboard 27 detected by the first transport length detection device DL1. Calculated by the management device 300.

  The current position of the production failure detected by each detector is detected by the second transport length detection device DL2 from the position where each production failure occurs or the tracking start position of the paper splicing failure by the counter corresponding to each detector. It is obtained sequentially by subtracting the conveyance length (number of generated pulse signals) of the double-sided cardboard 37. Thereby, the lower management apparatus 300 can monitor the current position of each production failure with reference to the contents of each counter.

<Operation and action>
The operation and action of the corrugating machine 1 of the present embodiment will be described below with reference to the accompanying drawings. First, when the corrugating machine 1 is powered on, the upper management apparatus 200 and the lower management apparatus 300 start operating. After the operation is started, the upper management apparatus 200 receives the production basic data regarding all orders and stores it therein. Then, the upper management apparatus 200 creates an operation command plan for all orders based on the stored production basic data, and calculates a speed command for the drive motor 47 that drives the upper and lower belts 43 and 45. . In accordance with the created operation command plan, the upper management device 200 supplies an operation command to the production line control device 210 and supplies an operation command plan for a predetermined number of orders and the calculated speed command to the lower management device 300.

<Contents of operation command plan>
Here, the operation command plan that the upper management apparatus 200 supplies to the lower management apparatus 300 will be described with reference to FIG. The operation command plan describes the contents for instructing the details of each order in order from the order to be executed first. In the present embodiment, an order having an order number “1”, that is, a predetermined number of orders, such as order 1 to order 2 and order 3, are described in order. The details of each order are “paper width” in the width direction orthogonal to the conveying direction, “production quantity” of the cardboard sheets 57, “cut length” in the conveying direction of each cardboard sheet 57, and the type of pallet selected by the stacker device 190 And “stacker code” for instructing the loading method, and “slitter scorer dimension” for instructing the processing position of the slitter scorer 160.

  For the details of order 1, 1250 mm is commanded as “paper width”, 7 sheets are commanded as “production quantity”, 1500 mm is commanded as “cutting length”, and “1” of pallet is commanded as “stacker code” ing. “100 + 200 + 100 * 3” is commanded as the “slitter scorer dimension”. “100” instructs that the position of the first ruled line processed by the scorer is 100 mm away from the position where the cardboard sheet is cut by the slitter in the width direction. “200” instructs that the position of the second ruled line is 200 mm away from the position of the first ruled line in the width direction. The next “100” instructs that the position where the cardboard sheet is cut by the slitter is a position 100 mm away from the position of the second ruled line in the width direction. “3” indicates the number of cardboard sheets 57 that have been subjected to the above-described processing in the width direction, and three cardboard sheets 57 with the two ruled lines formed in the width direction (3 ).

  “14” of the “stacker code” is a command for simultaneous stacking in which the cardboard sheets 57 of the next order are stacked without being sorted on the sheet bundle on which the cardboard sheets 57 of the previous order are stacked. “15” of the “stacker code” instructs the simultaneous stacking in which the cardboard sheets 57 of the next order are sorted and stacked on the sheet bundle on which the cardboard sheets 57 of the previous order are stacked.

  When combined stacking is executed according to “14” or “15” of “stacker code”, the upper management apparatus 200 executes the order in which the size of the corrugated cardboard sheet is large among the plurality of orders stacked together. As described above, the order of the orders in the operation command plan is determined. For this reason, the lower-level management apparatus 300 is configured to create a production process plan based on an operation command plan in which the order of orders has been determined for combined stacking. For example, the operation designation plan shown in FIG. 6 instructs the cardboard sheets 57 of order 2, order 3, and order 4 to be stacked together on the cardboard sheets 57 of order 1 in order. Orders 1 to 4 are described in order from the order of the size of the corrugated cardboard sheet 57, and even when stacked together, a pallet is not required for each order, and the positioning operation of the front stopper is not performed. Since it becomes unnecessary, stacking of sheet bundles is performed efficiently. In the present embodiment, the upper management device 200 and the lower management device 300 are an example of the plan management unit of the present invention that creates a production process plan so that the production process plan is executed first from the order in which the size of the corrugated cardboard sheet 57 is large.

<Main control routine>
As the operation of the corrugating machine 1 starts, the lower management apparatus 300 starts the control operation according to the main control routine. First, initial setting of each part of the lower management apparatus 300 is executed (S1). In the initial setting, the contents of each counter are cleared and the contents of the work memory 380 are initialized. In this embodiment, since the lower-level management device 300 has a self-diagnosis function, an initial self-diagnosis operation is executed in this initial setting.

  According to the result of the initial self-diagnosis operation, the presence or absence of an abnormal state is determined (S2). If an abnormal state exists, an abnormal processing operation is executed (S3). If no abnormal state exists (step S2: “no abnormality”), the process proceeds to step S4.

  The lower management apparatus 300 receives the operation command plan and the speed command related to the predetermined number of orders shown in FIG. 6 from the higher management apparatus 200, and stores them in the work memory 380 (S4). The lower management apparatus 300 is configured to manage the actual quantity produced by the cut-off device 170 by cutting the corrugated cardboard sheet 57 according to each order, and to supply the actual quantity data to the upper management apparatus 200. For this reason, since the upper management apparatus 200 can also manage the actual quantity of the order, the upper management apparatus 200 can store and hold an operation command plan related to a predetermined number of unexecuted orders. The operation command plan is supplied to the lower-level management device 300 according to the execution status of. As a result, the lower management apparatus 300 can sequentially receive the operation command plan in step S4 and store it in the work memory 380.

  The production process plan is created in the order of the order to be executed first based on the operation command plan stored in the work memory 380, and temporarily stored in the work memory 380 (S5). For example, when an operation command plan as shown in FIG. 6 is supplied from the upper management apparatus 200 and stored in the work memory 380, a production process plan as shown in FIG. The upper management apparatus 200, the lower management apparatus 300, and step S5 of this embodiment are an example of a plan management unit that creates a production process plan of the present invention. It is an example of a step.

  FIG. 7 shows the arrangement positions of processing apparatus lines such as the slitter scorer 160 and the cut-off device 170, the switching reference position P1 for generating a processing position switching command to the slitter scorer 160, and the arrangement of the paper splice defect detector DTP. The relationship between the position P2 and the plan start position P3 at which the production process plan is started is shown, and the arrangement of the corrugated cardboard sheets 57 of the production process plan existing between the arrangement position of the cutoff device 170 and the plan start position P3 Showing the relationship. In the present embodiment, the production process plan PN1 that is created first is created for the first to seventh cardboard sheets 57 of order 1 shown in the uppermost row in the arrangement relationship of the cardboard sheets 57 shown in FIG. Is done. Moreover, in this embodiment, the distance from the arrangement position of the cut-off device 170 to each of the positions P1, P2, and P3 is set to 6000 mm, 8000 mm, and 10000 mm.

  The plan start position P3 can be determined at any position as long as it is upstream in the transport direction from the position P2. However, as the plan start position P3 is set to a position on the more upstream side, the number of cardboard sheet production processes to be created in the production process plan increases, the storage occupation area of the work memory 380 increases, and the production Since the change processing load increases when the process plan is changed, the plan start position P3 is an upstream position close to the arrangement position of the paper splice defect detector DTP, for example, the arrangement position of the splice defect detector DTP. And a position between the exit of the double facer 150 is preferable.

  The production process plans PN1 to PN8 shown in FIG. 7 include the cutting length, which is the size of the corrugated sheet 57 of each order, the production quantity represented by the number of the last corrugated sheet 57 of each order, and the final corrugated sheet. The order switching scheduled position represented by 57 array positions. For example, in the production process plan PN1 of order 1 shown in FIG. 7, the cutting length is “1500”, and the production quantity is 7 because the last cardboard sheet 57 is described as the 7th sheet. The planned position is the position of the rear end portion of the seventh cardboard sheet 57 represented by the cutting length “1500” and the number “7”.

  After the production process plan is created as described above, the speed command supplied from the host management device 200 is supplied to the double facer control device 320 (S6). The double facer controller 320 drives the upper and lower belts 43 and 45 by controlling the drive motor 47 to a predetermined constant speed in accordance with the speed command. Thereby, the conveyance speed downstream of the double facer 150 is controlled to a constant speed. The upper management apparatus 200, the lower management apparatus 300, and step S6 of this embodiment are an example of a plan management unit that controls the cardboard transport speed of the present invention to a constant speed.

  When the entire corrugating machine 1 starts a production operation, in order to detect the conveyance length of the single-sided cardboard 27 sent out from the single facer 120, the first conveyance length detection device DL1 is operated, and the staying length detected by the operation is detected. Is stored in the work memory 380 (S7).

  Next, it is determined whether or not the value of each counter built in the lower management apparatus 300 has reached a corresponding value corresponding to the distance from the arrangement position of the cutoff device 170 to the plan start position P3 (S8). . If the corresponding value has been reached (S8: YES), the production process plan change routine shown in FIG. 8 is executed (S9). If the corresponding value has not been reached (S8: NO), the process proceeds to step S10. Since each counter is cleared immediately after the start of the production operation, it is determined in step S8 that the value of the counter has not reached the corresponding value, and the process proceeds to step S10.

  When the conveyance is started by driving the upper and lower belts 43 and 45, the operation command and the processing position command of the processing device line of the slitter scorer 160, the cutoff device 170, the removal device 180, and the stacker device 190 are shown in FIG. According to the production process plan shown, the slitter scorer control device 330, the cutoff control device 340, the removal control device 350, and the stacker control device 360 are sequentially supplied (S10). Thereby, each control device drives each processing device by controlling the drive motor or the drive mechanism, and performs positioning control.

  In the present embodiment, the processing position in the width direction of the slitter scorer 160 is controlled in accordance with the “slitter scorer dimension” of the order 1 shown in FIG. The rotational positions of the knife cylinders 59 and 61 of the cut-off device 170 are controlled according to the cutting length 1500 mm of the first sheet of the order 1 in the production process plan PN1 shown in FIG. The removal device 180 is not activated because there is currently no defective portion. The stacker device 190 is controlled to select the palette “1” in accordance with the “stacker code” of the order 1 shown in FIG.

  Subsequently, it is determined whether or not a production failure has occurred (S11). The occurrence of production failure is determined by whether or not an abnormality detection signal is generated from any one of the tension abnormality detectors DTT1 to DTT3, the step formation abnormality detector DTF, and the temperature abnormality detector DTH. If it is determined that a production failure has occurred (S11: YES), a production failure processing routine shown in FIG. 9 is executed (S12). If no production failure has occurred (S11: NO), the process proceeds to step S13.

  It is determined whether or not a paper splice defect, which is a kind of production defect, has occurred (S13). The occurrence of a paper splice failure is determined by whether or not an abnormality detection signal is generated from the paper splice failure detector DTP. If it is determined that a paper splice failure has occurred (S13: YES), a paper splice failure processing routine shown in FIG. 10 is executed (S14). If a paper splice failure has not occurred (S13: NO), the process proceeds to step S15. Steps S11 and S13 of this embodiment constitute an example of the detection step of the present invention together with the function of each detector.

  It is determined whether or not the production-side defect removal switch SSW has been operated (S15). If the switch SSW is operated (S15: YES), the production side removal operation processing routine shown in FIG. 11 is executed (S16). If the switch SSW has not been operated (S15: NO), the process proceeds to step S17.

  It is determined whether or not the processing-side defect removal switch KSW has been operated (S17). If the switch KSW is operated (S17: YES), the processing side removal operation processing routine shown in FIG. 12 is executed (S18). If the switch KSW has not been operated (S17: NO), the process returns to step S4.

(Progress of production process plan)
By repeatedly executing steps S4 to S18 of the main control routine, the production process plans PN1 to PN8 shown in FIG. 7 proceed. In FIG. 7, when the portion of the first double-sided cardboard 37 in the order 1 reaches the arrangement position of the cutoff device 170, the cutoff device 170 is operated to cut the double-sided cardboard 37 and the first cardboard sheet. 57 is produced.

  When the first sheet of order 1 in the first production process plan PN1 shown in FIG. 7 is produced, a second production process plan PN2 is created and stored in the work memory 380 by executing step S5. . During the time when the processing position of the slitter scorer 160 is positioned when the order 1 is switched to the order 2, a switching failure occurs in the corrugated cardboard sheet 57. The switching failure removal process is performed after the production process of the seventh sheet of the order 1 in the second production process plan PN2 so that the cardboard sheet 57 corresponding to the length of the switching failure is removed by the removing device 180. Added. Then, a production process for the first sheet of order 2 is newly created and added after the switching failure removal process. In this embodiment, for convenience, the cutting length of the switching failure is predetermined as “1000” according to the positioning time of the processing position.

  When the second sheet of order 1 reaches the arrangement position of the cut-off device 170 and is cut, a third production process plan PN3 is created and stored in the work memory 380 by executing step S5. When the third sheet of order 1 reaches the arrangement position of the cut-off device 170 and is cut, a fourth production process plan PN4 is created and stored in the work memory 380 by executing step S5. In the production process plan PN4, since the order 2 is switched to the order 3, the switching failure removal process is added after the production process of the second sheet of the order 2 in the same manner as the switching from the order 1 to the order 2. The Similarly, each time the sheets of the order 1 are cut, the production process plans PN5 to PN7 are created and stored in the work memory 380 by executing step S5. In the production process plan PN4, when the rear end portion (scheduled switching position) of the seventh sheet which is the final sheet of the order 1 passes the switching reference position P1, the slitter scorer 160 from the order 1 to the order 2 A switching command is supplied from the lower management apparatus 300 to the slitter scorer control apparatus 330. Similarly, in the production process plan PN7, the slitter scorer from the order 2 to the order 3 also when the rear end portion (scheduled switching position) of the second sheet that is the final sheet of the order 2 passes the switching reference position P1. 160 switching commands are supplied from the lower management apparatus 300 to the slitter scorer control apparatus 330.

  When the seventh sheet of order 1 is cut, an eighth production process plan PN8 is created and stored in the work memory 380 by executing step S5. In accordance with the production process plan PN8, the operation command and the processing position command are supplied to the control device of each processing device in step S10. When the switching failure portion generated when switching from order 1 to order 2 has reached the arrangement position of the cutoff device 170, the cutoff device 170 is double-sided according to the operation command representing the cutting length “1000” of the switching failure removal process. The cardboard 37 is cut, and the removing device 180 removes the cardboard sheet 57 at the defective switching portion according to the operation command.

<Production failure processing routine>
When any one of the tension abnormality detectors DTT1 to DTT3, the step formation abnormality detector DTF, and the temperature abnormality detector DTH detects a production failure and supplies an abnormality detection signal to the subordinate management device 300, the main shown in FIG. In step S11 of the control routine, it is determined that a production failure has occurred (S11: YES). As a result, the production failure processing routine shown in FIG. 9 is executed.

  A numerical value corresponding to the distance from the arrangement position of the cutoff device 170 to the arrangement position of the detector that has generated the abnormality detection signal is set in the counter corresponding to the detector that has generated the abnormality detection signal (S120). For example, when the tension abnormality detector DTT1 generates an abnormality detection signal, the numerical value corresponding to the distance is the position of the tension abnormality detector DTT1 and the single-sided cardboard 27 detected by the first transport length detection device DL1. It is a numerical value calculated based on the staying length. The numerical value set in the counter is subtracted in response to the pulse signal supplied from the second transport length detector DL2. In this embodiment, each counter built in the lower management apparatus 300 is configured by hardware so as to perform a counting operation independently of a routine such as a main control routine, and always performs a counting operation in response to the pulse signal. Is configured to do.

  The part of the single-sided cardboard 27 in which the tension abnormality has occurred needs to be removed by the removing device 180. For this reason, the cutting length of the defective production to be removed is calculated according to the length of the abnormal tension portion and the predetermined margin length, and stored in the work memory 380 (S121). The length of the abnormal tension portion is calculated based on the occurrence time of the abnormality detection signal. After execution of step S121, the process proceeds to step S13 of the main control routine.

<Production process plan change routine>
The counter value is subtracted by the pulse signal after a production failure due to a tension abnormality occurs, and the counter value reaches a corresponding value corresponding to the distance from the arrangement position of the cutoff device 170 to the plan start position P3. It is determined that the counter value is the corresponding value at position P3 (S8: YES). As a result, the production process plan change routine shown in FIG. 8 is executed.

  In FIG. 8, the number of the order of the corrugated cardboard sheet 57 to which the defective production part is to be assigned is specified (S90). For example, in a state where the production process plan PN8 shown in FIG. 13 is stored in the work memory 380, when the production failure part reaches the plan start position P3, the corrugated cardboard sheet 57 to which the production failure part is to be assigned is With reference to the production process plan PN8 stored in the memory 380 and the current position of the defective production portion represented by the counter value, the second sheet of the order 4 is specified. Step S90 of the present embodiment is an example of a determination step for determining an order to which a defective production portion of the present invention is to be assigned.

  Since the defective production portion needs to be removed by the removal device 180, the production failure removal process is added to the production process position of the specified sheet order in the production process plan, and this new addition is added. A production process plan is stored in the work memory 380 (S91). For example, a production defect removal process with a cutting length of “1000” is added to the position of the second sheet of order 4, the production process plan is changed from the production process plan PN8 to the production process plan PN80, and the work memory 380 is stored. Remembered. The cutting length of the defective production portion is the length calculated in step S121 of the defective production processing routine shown in FIG.

  The production process of the sheet identified as the corrugated cardboard sheet 57 to which the defective production part is to be assigned and the production process of the subsequent rank sheet are lowered with the addition of the removal process. The planned switching position of the order to be changed is changed, and the changed production process plan is stored in the work memory 380 (S92). For example, after the defective switching removal process of the production process plan PN80 is executed, the production process of the second sheet of the specified order 4 is carried down after the defective manufacturing removal process. Along with this lowering, the scheduled switching position represented by the position of the second sheet of the order 4 is changed. The new production process plan PN81 changed in this way is stored in the work memory 380. After step S92 is executed, the process proceeds to step S10 of the main control routine. The lower-level management device 300 and steps S90 to S92 of this embodiment are an example of the production plan change unit of the present invention. Moreover, step S91 and step S92 of this embodiment are an example of the change step of this invention.

<Paper splice defect handling routine>
When the paper splice failure detector DTP detects a paper splice failure and supplies an abnormality detection signal to the lower management apparatus 300, it is determined that a paper splice failure has occurred in step S13 of the main control routine shown in FIG. 5 (S13). : YES). As a result, the paper splice failure processing routine shown in FIG. 10 is executed.

  A numerical value corresponding to the distance from the arrangement position of the cutoff device 170 to the arrangement position P2 of the paper splice defect detector DTP is set in the counter corresponding to the paper splice defect detector DTP (S140). The numerical value corresponding to the distance is a numerical value calculated based on the linear distance between the disposition position P2 of the paper splice defect detector DTP and the disposition position of the cutoff device 170. The numerical value set in the counter is subtracted in response to the pulse signal supplied from the second transport length detection device DL2, and the subtraction operation is performed independently of the execution of each routine.

  The portion of the single-sided cardboard 27 where the paper splice failure has occurred needs to be removed by the removing device 180. For this reason, the cutting length of the paper joint failure to be removed is calculated according to the length of the paper joint failure portion and the predetermined margin length, and stored in the work memory 380 (S141). The length of the paper splice defective portion is calculated based on the occurrence time of the abnormality detection signal.

  When a paper splice failure occurs, the production process plan change routine shown in FIG. 8 is executed immediately after the occurrence of the paper splice failure in order to remove the paper splice failure (S142). For example, in the state where the production process plan PN7 shown in FIG. 14 is stored in the work memory 380, when the paper splice failure detector DTP detects a paper splice defect portion that has reached the arrangement position P2, the production process plan of step S142. A change routine is executed. As a result of this execution, the number of the order of the corrugated cardboard sheet 57 to which the defective joint portion is to be assigned is specified (S90). In the production process plan PN7 shown in FIG. 14, the corrugated cardboard sheet 57 that is to be assigned with the defective joint is specified as the second sheet of the order 3.

  Since the splicing failure portion needs to be removed by the removing device 180, the splicing failure removing process is added to the position of the production process of the specified sheet order in the production process plan. The new production process plan is stored in the work memory 380 (S91). In FIG. 14, the process for removing the splicing defect with the cutting length “1000” is added to the position of the second sheet of the order 3 and stored in the work memory 380. The cutting length of the paper splice defective portion is the length calculated in step S141.

  The production process of the sheet identified as the corrugated cardboard sheet 57 to which the defective joint part is to be assigned and the production process of the subsequent rank sheet are lowered with the addition of the removal process. The order switching scheduled position is changed, and the changed production process plan is stored in the work memory 380 (S92). In FIG. 14, the production process of the second sheet of the specified order 3 is carried down after the removal process of the paper joint failure. Along with this lowering, the planned order switching position represented by the position of the second sheet of order 3 is changed. The changed new production process plan PN70 is stored in the work memory 380. After step S92 is executed, the process proceeds to step S15 of the main control routine.

<Production side removal operation processing routine>
When the operator finds a defective production portion near the entrance of the double facer 150 and operates the production-side defect removal switch SSW, the production-side defect removal switch SSW is executed by executing step S15 of the main control routine shown in FIG. Is determined to have been operated (S15: YES). As a result, the production side removal operation processing routine shown in FIG. 11 is executed (S16).

  A numerical value corresponding to the distance from the arrangement position of the cutoff device 170 to the arrangement position of the defect removal switch SSW on the production side is set in the counter corresponding to the defect removal switch SSW (S160). The numerical value corresponding to the distance is a numerical value determined in advance based on the distance between the arrangement position of the cutoff device 170 and the arrangement position of the defect removal switch SSW. The numerical value set in the counter is subtracted in response to the pulse signal supplied from the second transport length detection device DL2, similarly to the counter corresponding to each detector.

  The cutting length of the production failure found by the operator is calculated based on the operation time of the failure removal switch SSW and a predetermined margin length, and stored in the work memory 380 (S161). After step S161 is executed, the process proceeds to step S17 of the main control routine shown in FIG. Note that the second conveyance length detection device DL2 of the present embodiment, a counter corresponding to the production-side defect removal switch SSW, and means including steps S15 and S160 are examples of the tracking means of the present invention.

<Processing side removal operation processing routine>
If the operator finds a defective production immediately before the entrance of the cut-off device 170 and operates the machining-side defect removal switch KSW, the processing-side defect removal switch is executed by executing step S17 of the main control routine shown in FIG. It is determined that the KSW has been operated (S17: YES). As a result, the processing side removal operation processing routine shown in FIG. 12 is executed (S18).

  It is determined whether or not there is an order in which the production quantity of the cardboard sheets 57 is two between the arrangement position of the cutoff device 170 and the switching reference position P1 (S180). If there is no order with two production quantities (S180: NO), removal of the found defective production portion is executed according to the following steps.

  The cutting length of the production process executed next time is lowered to the cutting length of the production process executed one after another (S181). In other words, since the operator has instructed the removal of the found defective production part by operating the defect removal switch KSW, this defective production part removal process is added to the initial production process plan stored in the work memory 380. . For this reason, the production process scheduled to be executed next time and the cutting length of the process after the production process are lowered and stored in the work memory 380.

  A cutting command is supplied to the cut-off control device 340 so that the defective production portion instructed by the operation of the defect removal switch KSW is cut with a predetermined cutting length (S182). The cut-off device 170 is actuated by the cut-off control device 340 to cut the double-sided cardboard 37 at the defective production portion. Then, a removal command is supplied to the removal control device 350 (S183). The removal device 180 is operated by the removal control device 350 to remove the corrugated cardboard sheet 57 at the defective production portion.

  It is determined whether the defect removal switch KSW on the processing side is continuously operated (S184). If it is not operated continuously (S184: NO), a cutting command is supplied to the cut-off control device 340 so that the double-sided cardboard 37 is cut at the cutting length of the next production process (S185). Thereby, the double-sided cardboard 37 is cut with the initial cutting length according to the production process plan stored in the work memory 380. After execution of step S185, the process returns to step S4 of the main control routine shown in FIG.

  If the defect removal switch KSW on the processing side is continuously operated (S184: YES), the value of any of the built-in counters of the lower-level management device 300 is from the arrangement position of the cutoff device 170 to the plan start position P3. It is determined whether or not the corresponding value corresponds to the distance (S186), and if it is the corresponding value (S186: YES), the production process plan change routine shown in FIG. 8 is executed (S187). That is, when the defective production part reaches the plan start position P3 during the continuous operation of the defect removal switch KSW, the production process plan is changed in the same manner as in steps S8 and S9 of the main control routine shown in FIG. This is because it is necessary. If the value of the counter is not a corresponding value (S186: NO), the process returns to step S181. As a result, the cutting length of the production process executed next time is lowered to the cutting length of the production process executed one after another, and the double-sided cardboard 37 is cut and removed with a predetermined cutting length.

  If it is determined in step S180 that there is an order in which the production quantity of the cardboard sheets 57 is two between the arrangement position of the cutoff device 170 and the switching reference position P1 (S180: YES), the defect removal switch KSW The removal operation of the defective portion instructed by the operation is prohibited according to the following steps.

  It is determined whether or not the cutting operation currently being executed by the cut-off device 170 is the cutting operation in the last production process of the order (S188). If it is the cutting operation of the last production process (S188: YES), it is determined whether or not the defect removal switch KSW on the processing side is continuously operated (S189). If the operation is not continued (S189: NO), the process returns to step S4 of the main control routine shown in FIG.

  If the processing-side defect removal switch KSW is continuously operated (S189: YES), the production of the corrugated cardboard sheet 57 is performed between the arrangement position of the cutoff device 170 and the switching reference position P1, as in step S180. It is determined whether or not there is an order with two quantities (S190). If there is no order for which the production quantity is two (S190: NO), the process proceeds to step S181, and the defective production portion designated by the operation of the defective removal switch KSW is removed as described above.

  If there is an order with two production quantities (S190: YES), it is determined whether the value of the counter is the corresponding value of the plan start position P3, as in steps S186 and S187 (S191). ), If it is a corresponding value (S191: YES), the production process plan change routine shown in FIG. 8 is executed (S192). When the value of the counter is not a corresponding value (S191: NO) or after step S192 is executed, the process returns to step 188.

  In step S188, when it is determined that the cutting operation currently executed by the cutoff device 170 is not the cutting operation in the last production process of the order (S188: NO), the process proceeds to step S191, and the value of the counter is It is determined whether the value is a corresponding value. If the value is a corresponding value, the production process plan change routine shown in FIG. 8 is executed.

  In the processing side removal operation processing routine shown in FIG. 12, there is an order in which the production quantity of the corrugated cardboard sheets 57 is two between the arrangement position of the cutoff device 170 and the switching reference position P1, When the cutting operation currently performed by the OFF device 170 is the cutting operation in the last production process of the order, even if the defect removal switch KSW on the processing side is operated, the removal of the defective production portion is prohibited. . In the case of a short order in which the production quantity is two pieces, the positioning operation of the processing position of the slitter scorer 160 according to the next order is started at the time of operating the defect removal switch KSW, and the production process cannot be changed. The removal operation according to the operation of the defect removal switch is prohibited. This prohibition control prevents the short order processing itself from disappearing due to the sheet removal operation, and prevents the production operation by each device at the processing end from being out of synchronization with the production of the order. In this embodiment, the production quantity of short orders is two, but is not limited to this quantity. The short order may be an order in which the total number of sheets is shorter than the distance from the arrangement position of the cutoff device 170 to the switching reference position P1.

[Modification]
Although one embodiment of the present invention has been described, various modifications can be made by those skilled in the art within the scope of the present invention.

(1) In this embodiment, one slitter scorer 160 is configured to perform ruled line and cutting processing, but instead, a configuration in which a plurality of slitter scorers are switched and operated may be used. By providing a plurality of slitter scorers, the positioning time of the processing position of the slitter scorer is further shortened, so that the length of the defective switching portion is shortened and wasteful consumption of cardboard is reduced.

(2) In the present embodiment, the switching reference position P1 is predetermined based on the positioning time of the processing position of the slitter scorer 160, but all the processing devices arranged in the processing device line are prepared for order switching. The switching reference position may be determined based on the time required to complete the process. For this reason, when the processing apparatus with the longest preparation time is arranged downstream of the slitter scorer, the switching reference position may be determined based on the preparation time of the processing apparatus.

(3) In the present embodiment, the upper management apparatus 200 and the lower management apparatus 300 are separately provided, and the lower management apparatus 300 creates a production process plan based on the operation command plan supplied from the upper management apparatus 200. However, instead of this, one management apparatus may be configured to create a production process plan directly from the production basic data input as the contents of the order.

(4) In the present embodiment, the planned switching position on the cardboard included in the production process plan is determined from the cutting length of each order and the rank position of the last sheet of each order. For example, in the production process plan PN1 shown in FIG. 7, the planned switching position of the order 1 is determined from the cutting length “1500” and the rank position of the seventh sheet that is the last sheet of the order 1. Instead of such a configuration of the present embodiment, a distance from the arrangement position of the cut-off device 170 to the order position of the last sheet in each order may be included in the production process plan as a planned switching position. In other words, the planned switching position may be represented by any type of data as long as it is data that can specify a position where a plurality of consecutive orders are switched.

It is a front view which shows the whole schematic structure of the corrugating machine which concerns on one Embodiment of this invention. It is a front view showing a schematic structure of a production end of a corrugating machine concerning one embodiment of the present invention. It is a front view showing a schematic structure of a processing end of a corrugating machine concerning one embodiment of the present invention. It is a block diagram which shows the electrical constitution of the corrugating machine which concerns on one Embodiment of this invention. It is a flowchart which shows the main control routine of the low-order management apparatus which concerns on one Embodiment of this invention. It is explanatory drawing for demonstrating the driving | operation command plan of the low-order management apparatus which concerns on one Embodiment of this invention. It is explanatory drawing for demonstrating progress of the production process plan of a low-order management apparatus in one Embodiment of this invention. It is a flowchart which shows the production process plan change routine of the low-order management apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the production defect processing routine of the low-order management apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the paper splice defect processing routine of the low-order management apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the production side removal operation processing routine of the low-order management apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the process side removal operation processing routine of the low-order management apparatus which concerns on one Embodiment of this invention. It is explanatory drawing for demonstrating the production failure process of the low-order management apparatus which concerns on one Embodiment of this invention. It is explanatory drawing for demonstrating the paper splice defect process of the low-order management apparatus which concerns on one Embodiment of this invention.

DESCRIPTION OF SYMBOLS 1 Corrugating machine 3 Production end 5 Processing end 27 Single-sided cardboard 110 Mill roll stand 120 Single facer 130 Bridge part 140 Glue machine 150 Double facer 160 Slitter scorer 170 Cut-off device 180 Removal device 190 Stacker device 200 Upper level management device 300 Lower level management device 310 Processing line control device 330 Slitter scorer control devices DTT1 to DTT3 Tension abnormality detector DTF Stage formation abnormality detector DTH Temperature abnormality detector DTP Paper splice failure detector SSW Production side failure removal switch KSW Processing side failure removal switch P1 Switching reference Position P2 Paper joint defect detector placement position P3 Planning start position

Claims (9)

In a corrugating machine comprising a production end for producing continuous corrugated cardboard from a base paper, and a processing end for producing a corrugated cardboard sheet by cutting the continuous corrugated cardboard.
A slitter scorer for cutting or giving ruled lines to the continuous cardboard, a cut-off device for cutting in the width direction perpendicular to the transport direction, and a removal device for removing defective cardboard sheets And a processing device line disposed at the processing end,
According to a plurality of consecutive orders, a plan management unit that creates a production process plan including the size and production quantity of the corrugated cardboard sheet for each order and the planned switching position on the corrugated cardboard for switching each order;
When the planned switching position on the cardboard according to the production process plan reaches a predetermined switching reference position, a processing control unit that controls a processing position at which cutting or ruled line assignment is performed by at least the slitter scorer;
A defect detection unit that detects the occurrence of a production failure part until the production failure part that has occurred at the production end reaches the switching reference position;
A first removal operation unit capable of being operated by an operator to instruct the removal device to remove a defective portion existing at the processing end;
When the defect detection unit detects the occurrence of a production defect part, the order to which the production defect part is to be allocated is determined from the plurality of consecutive orders, and the determined order is determined by the removal device. A process for removing the defective production part is added to the production process plan, and the production process of the corrugated cardboard sheet that was scheduled to be produced by the defective production part is moved down in the production process plan, so that the length of the defective production part is reduced. And a production plan change unit that changes the planned switching position of the order following the determined order in the production process plan ,
The plan management unit controls the operation of the removal device so as to remove a defective portion when the first removal operation unit is operated,
When the first removal operation unit is operated when there is an order shorter than the distance between the two positions between the switching reference position and the arrangement position of the cutoff device, the plan management unit Is a corrugating machine that prohibits removal of defective parts by the removing device . The plan management unit, when a plurality of orders in which the total length of the total number of cardboard sheets to be produced is shorter than the distance from the switching reference position to the arrangement position of the cutoff device, The corrugating machine according to claim 1 , wherein the production process plan is created. The corrugating machine according to claim 1, wherein the first removal operation unit is disposed in proximity to an arrangement position of the cutoff device. A second removal operation unit that can be operated by an operator to instruct the removal device to remove a defective portion existing at the production end;
The plan management unit detects the length of the continuous removal of the corrugated cardboard when the second removal operation unit is operated, thereby detecting a defective portion from the arrangement position of the second removal operation unit. It has a tracking means for tracking the current position, claim for controlling the operation of the removal device to remove the defective part when the current position of the tracked defective portion reaches the position of the removal device by its tracking means The corrugating machine according to any one of 1 to 3 . 5. The corrugating machine according to claim 4 , wherein the second removal operation unit is disposed in proximity to an entrance of a double facer disposed at the production end. When the second removal operation unit is operated, the production plan changing unit uses the defective part instructed to be removed by the operation of the second removal operation unit as the defective production part, and continuously An order to which the commanded defective part is to be assigned is determined from the orders, and a process in which the commanded defective part is removed by the removing device for the determined order is added to the production process plan. The cardboard sheet production process that was scheduled to be produced by the commanded defective part is lowered in the production process plan, and the switching of the order following the order determined according to the length of the commanded defective part The corrugated machine according to claim 4 or 5 , wherein a planned position is changed in the production process plan. A production end for producing continuous corrugated cardboard from a base paper and a processing end for producing a corrugated cardboard sheet by subjecting the continuous corrugated cardboard to cutting or the like. A corrugating machine production management device in which a slitter scorer for applying ruled lines, a cut-off device for cutting in a width direction perpendicular to the conveying direction, and a removing device for removing defective corrugated cardboard sheets are arranged at the processing end. Because
According to a plurality of consecutive orders, a plan management unit that creates a production process plan including the size and production quantity of the corrugated cardboard sheet for each order and the planned switching position on the corrugated cardboard for switching each order;
When the planned switching position on the cardboard according to the production process plan reaches a predetermined switching reference position, a processing control unit that controls a processing position at which cutting or ruled line assignment is performed by at least the slitter scorer;
A defect detection unit that detects the occurrence of a production failure part until the production failure part that has occurred at the production end reaches the switching reference position;
A first removal operation unit capable of being operated by an operator to instruct the removal device to remove a defective portion existing at the processing end;
When the defect detection unit detects the occurrence of a production defect part, the order to which the production defect part is to be allocated is determined from the plurality of consecutive orders, and the determined order is determined by the removal device. A process for removing the defective production part is added to the production process plan, and the production process of the corrugated cardboard sheet that was scheduled to be produced by the defective production part is moved down in the production process plan, so that the length of the defective production part is reduced. And a production plan change unit that changes the planned switching position of the order following the determined order in the production process plan ,
The plan management unit controls the operation of the removal device so as to remove a defective portion when the first removal operation unit is operated,
When the first removal operation unit is operated when there is an order shorter than the distance between the two positions between the switching reference position and the arrangement position of the cutoff device, the plan management unit Is a corrugated cardboard production management device that prohibits removal of defective parts by the removing device. A second removal operation unit that can be operated by an operator to instruct the removal device to remove a defective portion existing at the production end;
The plan management unit detects the length of the continuous removal of the corrugated cardboard when the second removal operation unit is operated, thereby detecting a defective portion from the arrangement position of the second removal operation unit. It has a tracking means for tracking the current position, claim for controlling the operation of the removal device to remove the defective part when the current position of the tracked defective portion reaches the position of the removal device by its tracking means production control apparatus of cardboard according to 7. When the second removal operation unit is operated, the production plan changing unit uses the defective part instructed to be removed by the operation of the second removal operation unit as the defective production part, and continuously An order to which the commanded defective part is to be assigned is determined from the orders, and a process in which the commanded defective part is removed by the removing device for the determined order is added to the production process plan. The cardboard sheet production process that was scheduled to be produced by the commanded defective part is lowered in the production process plan, and the switching of the order following the order determined according to the length of the commanded defective part The corrugated board production management device according to claim 8 , wherein a planned position is changed in the production process plan.

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