JP2011088393A5 - - Google Patents

Description

A slitter for slitting cardboard and a slitter scorer equipped with the slitter

  The present invention relates to a slitter that performs slit processing for cutting corrugated cardboard into a necessary width in a corrugated cardboard production apparatus that bonds corrugated cores and liners to produce corrugated cardboard. The present invention relates to a slitter including a slitter knife disposed below and a knife receiving member disposed above a conveyance path.

  In general, in a machine that produces double-sided corrugated board by gluing liners on both the front and back sides of the corrugated core, a slitter that is supported so as to be movable in the width direction perpendicular to the cardboard transport direction and cuts the cardboard to the required width. Various types of slitters are known. As an example, there is a slitter described in Patent Document 1. The slitter described in Patent Literature 1 includes a slitter blade disposed below a supply line that is a cardboard conveyance path, and a receiving head disposed above the supply line. The slitter blade can be displaced between a slitting position and a rest position, and is configured to be movable in the width direction perpendicular to the corrugated cardboard conveyance line. The receiving head can also reciprocate between the slitting position and the rest position. When the receiving head is located at the slitting position, the receiving head has a number of receiving disks that contact the upper surface of the cardboard and receive the cutting edge of the slitter blade located at the slitting position.

Japanese Patent No. 3581189

  In the slitter described in Patent Document 1, when both the slitter blade and the receiving head are located at the slitting position, the receiving head contacts the upper surface of the cardboard so that the slitter blade slits the cardboard. Further, the cardboard is prevented from being lifted upward from the supply line by being pushed by the cutting edge of the slitter blade.

  Generally, corrugated board production equipment uses different thickness of base paper to produce different types of flute corrugated board, or to produce large thickness corrugated board consisting of multiple layers like double sided cardboard. Can do. For example, the height of the A flute step is about 4.8 mm, while the height of the B flute step is about 2.8 mm. Furthermore, the height of the E flute step is about 1.4 mm, which is considerably smaller than the A flute. Moreover, since the paper thickness of the base paper is also different, the thickness of the corrugated board produced by the corrugated board production apparatus varies greatly depending on the type of flute and the paper thickness of the base paper. When the slitter described in Patent Document 1 slits corrugated cardboard having different thicknesses, the lowermost end of the receiving head located at the slitting position has a variety of corrugated cardboards capable of slitting. Among them, the slitting position of the receiving head needs to be determined in advance so that the top surface of the cardboard having the maximum thickness can be contacted.

  For example, in the slitter described in Patent Document 1, when the lowermost end portion of the receiving head located at the slitting position of the receiving head is preset according to the thickness of the corrugated cardboard of the A flute, When the slit processing is performed, the lowermost end portion of the receiving head is located about 2 mm away from the upper surface of the cardboard corresponding to the difference in the height of the step. For this reason, the receiving head cannot reliably prevent the corrugated board from being lifted by being pushed by the cutting edge of the slitter blade, so-called flapping of the corrugated cardboard occurs, and the slit processing cannot be performed accurately. there were. The fluttering of the corrugated cardboard increases as the corrugated cardboard thickness decreases, causing a defective corrugated cardboard sheet.

  Therefore, the present invention adjusts the vertical position of the slitter knife and the knife receiving member with respect to the cardboard on the conveyance path according to the thickness of the cardboard on which the slit processing is performed, thereby reducing the thickness of the cardboard by changing the order. An object of the present invention is to provide a slitter capable of preventing flapping of corrugated cardboard and performing slit processing with high accuracy even when changed.

  In order to achieve the above object, a first aspect of the present invention according to claim 1 is a slitter that performs slit processing for cutting a cardboard conveyed along a conveyance path in a conveyance direction, and is provided below the conveyance path. A slitter knife that is disposed above the conveyance path, and a knife receiving member that can be engaged with the slitter knife to perform the slit processing, and a knife that supports the slitter knife so that it can be displaced in the vertical direction. A support mechanism; a knife receiver support mechanism that supports the knife receiver member to be displaceable in the vertical direction; a knife drive unit that displaces the slitter knife in the vertical direction; and a knife receiver drive that displaces the knife receiver member in the vertical direction. And the thickness of the corrugated board so that the knife receiving member is located at a knife receiving working position where it can come into contact with the upper surface of the corrugated board on the transport path. In response, the knife receiving drive unit is controlled, and the slitter knife is controlled so that the slitter knife is positioned at the knife operating position where the knife receiving member is located at the knife receiving operating position and has a predetermined engagement amount. And a control unit.

  In the first aspect of the invention, even if the slitter is configured to slit the cardboard by a single slitter unit, or two slitter units arranged in the cardboard transport direction are operated alternately to slit the cardboard. The structure which processes may be sufficient. Further, the slitter may be configured as a slitter scorer combined with a scorer that provides ruled lines in the cardboard conveyance direction.

  In the first aspect of the present invention, the knife support mechanism or the knife receiving support mechanism may have any structure as long as it supports the slitter knife or the knife receiving member so as to be movable in the vertical direction. For example, a configuration in which a slitter knife or the like is supported so as to be displaceable by a guide mechanism extending linearly in a vertical direction, a configuration that is supported so as to be displaceable in a vertical direction by a pivotable lever, or a linear guide mechanism A combination structure with a pivotable lever may be used.

  In the first aspect of the invention, the control unit controls the knife receiver driving unit so that the vertical distance between the knife receiver operating position and the cardboard conveyance path increases as the thickness of the cardboard increases. Any configuration is possible as long as it is configured. For example, the control unit controls the knife receiving drive unit so that the vertical distance between the knife receiving operating position and the upper surface of the corrugated board conveyance path is a value obtained by adding a predetermined allowable value to the thickness of the cardboard. It may be configured to do so. In this case, when the knife receiving member comes into contact with the upper surface of the cardboard, the allowable value is set so that the contact resistance does not have a great influence on the conveyance of the cardboard.

  According to a specific aspect of the present invention, in order to perform slit processing on the corrugated cardboard having different thicknesses by changing the order, the control unit includes operating position information indicating the knife receiving operating position and the knife operating position, respectively. An information acquisition unit to be acquired is provided, and the knife driving unit and the knife receiver driving unit are controlled in accordance with the operation position information acquired by the information acquisition unit.

  In this specific aspect, the information acquisition unit is configured to acquire operating position information from a management device provided externally for managing the operation of the slitter, and configured to include a storage unit that stores the operating position information inside the slitter. Or the structure provided with the calculation part which calculates the operation position information based on the thickness of the corrugated board regarding each order in the slitter may be sufficient. Further, the timing at which the information acquisition unit acquires the operation position information may be any time as long as it is before or after the order change. For example, the acquisition timing may be a time before the order change and a predetermined time before the end of the previous order.

  According to a specific aspect of the present invention, the knife support mechanism supports the slitter knife so as to be movable in a width direction orthogonal to the cardboard conveyance direction, and the knife receiver support mechanism supports the knife receiver member. , Movably supported in the width direction, and the information acquisition unit respectively indicates a knife rest position and a knife rest position where the slitter knife and the knife receiving member are separated from the cardboard on the transport path. The control unit controls the knife driving unit and the knife receiving driving unit when changing the order according to the rest position information acquired by the information acquiring unit.

  In this specific embodiment, the knife rest position and the knife receiver rest position may be any positions as long as the slitter knife and the knife receiver are separated from the cardboard on the transport path. In order to shorten the time for positioning and controlling the slitter knife and the knife receiving member in the width direction, it is preferable that the knife resting position and the knife resting position be set as close as possible to the cardboard on the transport path.

  According to a specific aspect of the present invention, the information acquisition unit includes a storage unit that stores the operation position information corresponding to the type of corrugated cardboard flute, and the control unit changes the order. The operation position information corresponding to the type of corrugated cardboard flute determined for each order is read from the storage unit, and the knife driving unit and the knife receiver driving unit are controlled according to the read operation position information. It is.

  In this specific aspect, any configuration may be used as long as the storage unit stores the operation position information corresponding to at least the type of flute of the cardboard. For example, even if the operation position information is stored in association with the flute type and the paper thickness of the corrugated cardboard, it is associated with the flute type and the number of layers constituting the corrugated cardboard. The configuration may be stored.

  The specific aspect of Claim 5 is provided with the supporting member for supporting the lower surface of the corrugated board on the said conveyance path | route in the position close | similar to the said slitter knife, The said supporting member is multiple types by which the said slit process is performed The support member for the slitter knife so as to support the bottom surface of the cardboard having the maximum thickness among the cardboards having different thicknesses when the cardboard having the maximum thickness is transported along the transport path. The vertical support position is determined, and the knife support mechanism supports the support member so that it can be displaced in the vertical direction together with the slitter knife.

  In this specific aspect, the support member may have any configuration as long as it can be displaced in the vertical direction together with the slitter knife. For example, the support member may be configured to be fixed to a portion that supports the slitter knife in the knife support mechanism, or may be configured to be supported so as to be vertically movable separately from the slitter knife. In order to reliably support the lower surface of the cardboard, the support member is preferably disposed in the vicinity of a region where the slitter knife engages with the knife receiving member.

  In order to achieve the above object, the second aspect of the present invention according to claim 6 is the first invention arranged in the transport direction to perform slit processing for cutting the cardboard transported along the transport path in the transport direction. And a second slitter unit, and each slitter unit performs slit processing by alternately operating both slitter units each time the cardboard thickness changes due to an order change, and each slitter unit is located below the transport path. A slitter knife that is disposed, a knife receiving member that is disposed above the transport path and that can be engaged with the slitter knife to perform the slit processing, and that is displaceable in the vertical direction and orthogonal to the transport direction of the cardboard A knife support mechanism for supporting the slitter knife so as to be movable in the width direction to be moved, and to be capable of being displaced in the vertical direction and movable in the width direction. Each slitter unit, comprising: a knife receiver supporting mechanism for supporting a flange receiving member; a knife driving unit for displacing the slitter knife in the vertical direction; and a knife receiver driving unit for displacing the knife receiving member in the vertical direction. Each of the slitter units is controlled according to the thickness of the corrugated board so that the knife receiving member of the corrugated board is positioned at a knife receiving operation position that can contact the upper surface of the corrugated board on the conveying path. A control unit that controls the knife driving unit of each slitter unit so that the slitter knife is positioned at a knife operating position that has a predetermined amount of engagement with a knife receiving member of each slitter unit positioned at the knife receiving operating position. The control unit includes a knife receiving member and a slitter knife of each slitter unit on the transport path. Each slitter unit is controlled to have a knife driving position and a knife receiving driving position so as to be located at a knife rest position and a knife rest position that are separated from the ball, and is slit according to two different orders in succession. Among the two cardboards, the knife receiving member of the slitter unit that has been slit in accordance with the previous order is positioned at the knife receiving rest position corresponding to the thickness of the thicker cardboard. It is the structure which controls a receiving drive part.

  In the second aspect of the invention, even if the control unit is composed of two unit control units that individually control the first and second slitter units, one integrated control that controls both slitter units in an integrated manner. The structure which consists of a part may be sufficient.

  According to a specific aspect of the present invention, in the control unit, the knife receiving member of the slitter knife that performs slit processing according to the subsequent order is the knife corresponding to the thickness of the corrugated cardboard that is slit processed according to the subsequent order. Among the two cardboards having different thicknesses that are slit according to two different orders before and after being positioned at the receiving operating position, the knife receiving operating position according to the thickness of the thicker cardboard It is the structure which controls the said knife receiving drive part so that it may be located in.

  According to a specific aspect of the present invention, at least one of the knife support mechanism and the knife receiver support mechanism includes a movable body that is moved up and down by a rotational drive of a vertical movement drive motor, and a movable body on the movable body. It is the structure which has the support body which is moved by the action | operation of an air cylinder and supports the said slitter knife or the said knife receiving member.

  In order to achieve the above object, the third aspect of the present invention according to claim 9 is a slitter according to any one of the first and second aspects of the invention and a specific aspect thereof, and a corrugated cardboard conveyed along the conveyance path. And a scorer having an upper ruled line roll and a lower ruled line roll arranged above and below the conveyance path, and the upper ruled line roll has a circumferential shape around the processing ridges for applying the ruled lines. The lower ruled line roll is a slitter scorer that is fixed and arranged at a predetermined position with respect to the transport path to support the cardboard from below, and the upper ruled line roll is arranged in a vertical direction. A roll support mechanism for supporting the displacement, a roll driving unit for displacing the upper ruled line roll in a vertical direction, and a roll in which a processing protrusion of the upper ruled line roll can come into contact with the upper surface of the cardboard on the conveyance path A configuration and a roll control section for controlling the roll drive unit according to the thickness of the cardboard as to be located in the dynamic position.

  In the third aspect, the scorer having the upper ruled line roll and the lower ruled line roll may be a single scorer or a plurality of scorers.

[Effect of the first aspect of the invention]
In the first aspect of the invention, the thickness of the corrugated cardboard is changed by changing the order by adjusting the vertical position of the slitter knife and the knife receiving member with respect to the corrugated cardboard on the conveying path according to the thickness of the corrugated cardboard on which the slit processing is performed. Even when the height is changed, flapping of the cardboard can be prevented and slit processing can be performed with high accuracy.

[Effects of specific embodiments]
In a specific aspect of the present invention, the knife driving unit and the knife receiving driving unit are controlled in accordance with the operation position information acquired by the information acquiring unit. As a result, the slitter knife and the knife receiving member are accurately positioned at the knife operating position and the knife receiving operating position, respectively, and even when the cardboard thickness is changed by changing the order, fluttering of the cardboard is prevented and slitting is performed. It can be performed with high accuracy.

  According to a specific aspect of the present invention, the knife driving unit and the knife receiving driving unit are controlled when changing the order according to the rest position information acquired by the information acquiring unit. As a result, the slitter knife and the knife receiving member are accurately positioned at the knife resting position and the knife receiving resting position separated from the cardboard on the conveying path, respectively, and the slitting knife and the knife receiving member are positioned in the width direction with the corrugated board. It can be carried out smoothly and quickly without contact.

  In the specific aspect of claim 4, when changing the order, the operation position information corresponding to the type of corrugated cardboard flute determined for each order is read from the storage unit, and according to the read operation position information, The knife driving unit and the knife receiving driving unit are controlled. As a result, when the slitter knife and knife receiving member are accurately positioned at the knife operating position and knife receiving operating position corresponding to the corrugated cardboard thickness that differs for each type of flute, and the type of flute is changed by changing the order However, flapping of the cardboard can be prevented and slit processing can be performed with high accuracy.

  In the specific aspect of claim 5, the support member is the largest when the cardboard having the maximum thickness among the plurality of types of cardboard having different thicknesses to be slit is transported along the transport path. The vertical position of the support member relative to the slitter knife is determined so as to support the lower surface of the thick corrugated cardboard, and the knife support mechanism supports the support member so that it can be displaced in the vertical direction together with the slitter knife. As a result, the support member according to this specific embodiment is disposed closer to the slitter knife than the configuration in which the support member is disposed away from the slitter knife while avoiding the movement range of the slitter knife that can be displaced in the vertical direction. As a result, the lower surface of the cardboard can be reliably supported, and slit processing can be performed with high accuracy.

[Effect of the second aspect of the invention]
In the second aspect of the invention, slit processing is performed on the cardboard by operating the first and second slitter units alternately. In each slitter unit, the thickness of the cardboard is changed by changing the order by adjusting the vertical position of the slitter knife and knife receiving member with respect to the cardboard on the transport path according to the thickness of the cardboard on which slitting is performed. Even in such a case, flapping of the cardboard can be prevented and the slit processing can be performed with high accuracy. Further, in the second aspect of the invention, among the two cardboards having different thicknesses that are slit in accordance with two consecutive orders, the knife receiving rest position corresponding to the thickness of the thicker cardboard The knife receiving drive unit is controlled so that the knife receiving member of the slitter unit that has been slit in accordance with the order is positioned. As a result, the knife receiving member of each slitter unit can be stopped at a position as close to the cardboard as possible without contacting the cardboard whose thickness related to the subsequent order is increased, and in the width direction of the knife receiving member. The positioning operation can be performed smoothly and quickly without contacting the cardboard.

[Effects of specific embodiments]
In a specific aspect of claim 7, before the knife receiving member of the slitter knife performing the subsequent order is positioned at the knife receiving operating position corresponding to the thickness of the cardboard to be slit according to the subsequent order, Among the two corrugated boards having different thicknesses that are slit according to two different orders in succession, the knife receiving position is set according to the thickness of the thicker corrugated board. As a result, it is possible to reliably prevent the knife receiving member of the slitter knife that executes the subsequent order from colliding with the corrugated cardboard when the corrugated cardboard that is slit according to the previous order passes. .

  According to a specific aspect of the present invention, at least one of the knife support mechanism and the knife receiver support mechanism is moved by the rotary drive of the drive motor and moved by the operation of the air cylinder on the movable body. And a support for supporting the slitter knife or knife receiving member. As a result, by driving with a combination of a drive motor and an air cylinder that can move at high speed, the slitter knife or knife receiving member can be positioned at high speed in the operating position and the rest position, and the cardboard at the time of order switching The defect length can be shortened.

[Effect of the third aspect of the invention]
In the third aspect of the invention, the vertical position of the slitter knife and the knife receiving member with respect to the cardboard on the transport path is adjusted according to the thickness of the cardboard on which the slit processing and the ruled line processing are performed, and the upper ruled line roll By adjusting the position in the vertical direction, even when the thickness of the cardboard is changed by changing the order, flapping of the cardboard can be prevented, and slit processing and ruled line processing can be performed with high accuracy.

It is a front view showing the appearance composition of the processing end in corrugating machine 1 concerning one embodiment of the present invention. 2 is an enlarged front view showing a first unit 30A of a slitter scorer 30 in the corrugating machine 1. FIG. It is the side view which looked at the 1st slitter 33A-1 to 33A-7 of the 1st unit 30A from the left side. It is the enlarged top view which looked at the up-and-down moving mechanism of knife receiving member 330A of the 1st unit 30A from the upper part. 2 is a block diagram showing an electrical configuration of the corrugating machine 1. FIG. 2 is a block diagram showing a detailed configuration of a slitter scorer control device 142 and a slitter scorer drive device 152 of the corrugating machine 1; FIG. It is a flowchart which shows the process of the upper ruled line roll up-and-down movement control routine of the said slitter scorer control apparatus 142. FIG. It is a flowchart which shows the process of the slitter up-down movement control routine of the said slitter scorer control apparatus 142. FIG. It is explanatory drawing which shows the memory content of the position command table with which the slitter scorer program memory 202 of the said slitter scorer control apparatus 142 was equipped. It is explanatory drawing which shows the positional relationship of the operating position and rest position of the said knife receiving member 330A and the slitter knife 331A, and the conveyance path | route PL. In this embodiment, it is explanatory drawing which shows the positional relationship of the operating position of the said knife receiving member 330A and the slitter knife 331A, and the conveyance path | route PL in the case of slitting a thick corrugated cardboard. It is explanatory drawing which shows the positional relationship of the operating position of the said knife receiving member 330B and the slitter knife 331B, and the conveyance path | route PL in the case of performing a slit process to a thin corrugated board in this embodiment. It is explanatory drawing which shows the positional relationship with the operation | movement position of the knife receiving member 330B-1 and the slitter knife 331B-1, and the conveyance path | route PL in the case where slit processing is performed to a thin corrugated board in the form to which this invention is not applied.

  An embodiment in which the slitter of the present invention is applied to a slitter scorer of a corrugated machine that produces double-sided cardboard will be described below with reference to the accompanying drawings. Generally, a corrugating machine includes a production end that produces continuous cardboard and a processing end that processes the cardboard. The production end consists of a number of production equipment lines such as mill roll stands, single facers and double facers, and the processing end consists of a number of processing equipment lines such as rotary shears, slitter scorers, cut-off devices and stacker equipment. Composed. Since the basic configuration of the corrugating machine is known from Japanese Unexamined Patent Application Publication No. 2009-160797 and the like, detailed description thereof is omitted. The corrugating machine 1 according to the present embodiment will be described with reference to FIG. 1 showing only the processing end disposed on the downstream side of the double facer 10 in the cardboard transport direction FD. In this specification and the drawings, the vertical direction, the front-rear direction, and the left-right direction indicate directions indicated by arrows in the drawings, and the conveyance direction FD represents a direction conveyed from the right side to the left side in FIG.

<Overall configuration>
FIG. 1 is a front view showing an overall configuration of a number of processing apparatuses in the corrugating machine 1 of the present embodiment. In FIG. 1, the processing end of the corrugating machine 1 includes a rotary shear 20, a slitter scorer 30, a cut-off device 40, and a stacker device 50 along a conveyance path PL extending downstream from the outlet of the double facer 10. The double facer 10 forms a double-sided cardboard by bonding a front liner to a single-sided cardboard produced by a single facer. The double facer 10 includes an upper belt 11 and a lower belt 12, and conveys a double-sided cardboard from above and below by both belts. The upper belt 11 and the lower belt 12 are driven by an upper pulley 14 and a lower pulley 15 connected to a drive motor 13, respectively. In the corrugating machine 1 of the present embodiment, when double-sided corrugated cardboard having different types of flutes is produced by changing the order, a known corrugated roll of a single facer is replaced automatically or manually according to the type of flutes. .

<Processing end configuration>
The rotary shear 20 is arranged on the downstream side of the double facer 10 and cuts the double-sided cardboard in the width direction perpendicular to the transport direction FD when changing the order. The rotary shaft 20 includes a knife cylinder 21 and an anvil cylinder 22 that are vertically opposed to each other. A knife extending in the width direction is provided on the peripheral surface of the knife cylinder 21. The anvil cylinder 22 has a receiving portion that engages with the knife of the knife cylinder 21. When both cylinders 21 and 22 are rotated, the knife and the receiving portion are engaged to cut the double-sided cardboard in the width direction.

  The slitter scorer 30 embodies the slitter of the present invention, and cuts the double-sided cardboard in the transport direction FD so as to have a predetermined width, and applies ruled lines extending in the transport direction FD. The slitter scorer 30 is composed of a first unit 30A and a second unit 30B arranged along the transport direction FD. The first and second units 30A and 30B are configured such that one is in operation and the other is performing preparatory work such as switching of the processing position in the width direction for order change.

  The first unit 30A includes an upstream scorer 31A and a downstream scorer 32A arranged along the transport direction FD. Each scorer has a number of sets of upper ruled line rolls arranged above the conveyance path PL and lower ruled line rolls arranged below the conveyance path PL in the width direction. The upper ruled line roll and the lower ruled line roll are each configured to be movable in the width direction so as to be positioned at a ruled line processing position designated according to each order.

  A first slitter 33A is disposed on the downstream side of the downstream scorer 32A. The first slitter 33A has a large number of sets of a knife receiving member 330A disposed above the transport path PL and a slitter knife 331A disposed below the transport path PL in the width direction. The knife receiving member 330A and the slitter knife 331A are each configured to be movable in the width direction so as to be positioned at a slit machining position designated according to each order.

  In order to slit a double-sided cardboard 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. In addition, a plurality of scorers among a large number of scorers are selectively operated and positioned in the width direction in order to perform ruled line processing at intervals in the width direction according to each order. When the scorers 31A, 32A and the slitter 33A are driven, slits and ruled lines are processed on the double-sided cardboard at predetermined positions in the width direction positioned according to the respective orders.

  The second unit 30B is configured in the same manner as the first unit 30A, and includes two sets of scorers 31B and 32B and a second slitter 33B. In FIG. 1, the second unit 30B is in a ready state, and the upper and lower ruled line rolls are separated from each other, and the knife receiving member 330B and the slitter knife 331B are separated from each other. The knife receiving members 330A and 330B and the slitter knives 331A and 331B of this embodiment are examples of the knife receiving member and the slitter knife of the present invention. The first and second units 30A and 30B of the present embodiment are examples of the first and second slitter units of the present invention.

  The cut-off device 40 cuts the double-sided cardboard cut in the transport direction FD by the slitter scorer 30 in the width direction to form a plate-like cardboard sheet. The cut-off device 40 has an upper knife cylinder 41 and a lower knife cylinder 42 that are opposed to each other vertically. When both knife cylinders 41 and 42 are rotated to engage the knives, the double-sided cardboard is cut in the width direction. The cut-off device 40 has a supply-side conveyor 43 and a delivery-side conveyor 44. The supply-side conveyor 43 supplies continuous double-sided cardboard to both knife cylinders 41 and 42, and the delivery-side conveyor 44 sends out cardboard sheets cut by the knives of both knife cylinders. The conveying speed of both conveyors 43 and 44 is synchronized with the rotational speed of both knife cylinders 41 and 42.

  The stacker device 50 stacks the corrugated board sheets conveyed by the conveying conveyor 51 from the delivery side conveyor 44 and discharges them as products to the outside of the apparatus. The stacker device 50 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 50 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 suction conveyor>
Between the rotary shaft 20 and the cut-off device 40, a suction conveyor group 60 is arranged to convey continuous double-sided cardboard. The suction conveyor group 60 includes first to third suction conveyors 61, 62, and 63. The first suction conveyor 61 has a conveyor unit 61A and a blower unit 61B. The conveyor unit 61A is configured to transport continuous double-sided cardboard in the transport direction FD, and the blower unit 61B sucks down the double-sided cardboard transported by the conveyor unit 61A and places the double-sided cardboard on the transport surface of the conveyor unit 61A. Has the effect of adsorbing. The second and third suction conveyors 62 and 63 are also configured in the same manner as the first suction conveyor 61, and include conveyor units 62A and 63A and blower units 62B and 63B. The conveyor units 61A, 62A, and 63A are connected to the drive motor 64, respectively, and are configured to convey double-sided cardboard at a synchronized conveyance speed by the rotation of the drive motor 64.

<Detailed configuration of slitter scorer 30>
The slitter scorer 30 of the present embodiment includes the first and second units 30A and 30B. Since the units 30A and 30B have the same configuration, the configuration of the first unit 30A is mainly shown in FIGS. This will be described in detail with reference to FIG.

(Configuration of scorers 31A and 32A)
In the present embodiment, two sets of scorers 31A and 32A are arranged in the transport direction FD so that the interval between adjacent ruled lines can be made as small as possible. The upstream scorer 31A includes an upper ruled line roll 310A and a lower ruled line roll 311A. Convex portions that are continuous in the circumferential direction are formed at substantially the center of the circumferential surface of the upper ruled line roll 310A. A concave portion that is continuous in the circumferential direction is formed in the approximate center of the circumferential surface of the lower ruled line roll 311A. The lower ruled line roll 311A is fixed and arranged so that the circumferential surface thereof coincides with the upper surface of the transport path PL. On the other hand, upper ruled line roll 310A is supported so as to be displaceable in the vertical direction with respect to conveyance path PL, as will be described later. The downstream scorer 32A is configured similarly to the upstream scorer 31A, and includes an upper ruled line roll 320A and a lower ruled line roll 321A. The scorers 31A and 32A, the upper ruled line rolls 310A and 320A, and the lower ruled line rolls 311A and 321A of this embodiment are examples of the scorer, the upper ruled line roll, and the lower ruled line roll of the present invention. Moreover, the convex part which followed the circumferential direction of this embodiment is an example of the process protrusion part of this invention.

  In FIG. 3, the first unit 30 </ b> A has a pair of frames 400 and 401 that face each other in the front-rear direction. In FIG. 2, a pair of upper beams 402 and 403 and a pair of lower beams 404 and 405 are installed between both frames 400 and 401, respectively. Further, a guide beam 406 is installed between the frames 400 and 401 in order to guide the lower ruled line rolls 311A and 321A in the width direction orthogonal to the transport direction FD, that is, the front-rear direction. The rotation drive motor 407 is fixed to the frame 401 as shown in FIG.

  The pair of lower support blocks 408 and 409 support the lower ruled line rolls 311 </ b> A and 321 </ b> A in a rotatable manner, and are attached to be slidable in the front-rear direction along the guide beam 406. Both lower support blocks 408 and 409 are respectively mounted with width direction drive motors 410 and 411 for sliding the blocks themselves in the front-rear direction. The width direction drive motors 410 and 411 are respectively connected to a rotating body that is screwed with a pair of screw shafts 412 and 413 provided between the frames 400 and 401. Both lower support blocks 408 and 409 move in the front-rear direction along the guide beam 406 by the rotational drive of both drive motors 410 and 411. Both the lower ruled line rolls 311A and 321A are respectively attached to a pair of rotational drive shafts 414 and 415 laid between the both frames 400 and 401 so as to be movable in the axial direction. Both rotary drive shafts 414 and 415 are connected to a rotary drive motor 407 shown in FIG. 3 via a known power transmission mechanism. Both the lower ruled line rolls 311A and 321A rotate counterclockwise in FIG.

(Configuration of vertical movement mechanism of upper ruled line rolls 310A and 320A)
In FIG. 2, a roll vertical movement induction motor 416 and a screw jack 417 are fixed on the upper beam 402 in order to displace the upper ruled line rolls 310 </ b> A and 320 </ b> A in the vertical direction. The screw jack 417 has an input shaft 418 and an output shaft 419 and is a device that converts the rotational motion transmitted to the input shaft 418 into a linear motion in the axial direction of the output shaft 419. The input shaft 418 is coupled to the induction motor 416 via a timing belt 420 and a pulley. As the screw jack 417, a “Lini power jack” manufactured by Tsubaki Emerson Co., Ltd. can be used. In the present embodiment, two screw jacks 417 are fixed in proximity to the front and rear end portions of the upper beam 402, and the input shaft 418 is configured as a common input shaft.

  The lower end portion of the output shaft 419 is connected to the upper end portion of the movable guide body 421 extending in the front-rear direction. Both front and rear end portions of the movable guide body 421 are movable in the vertical direction while being guided by guide members provided on opposing surfaces of both frames 400 and 401. The pair of upper support blocks 422 and 423 are attached to be slidable in the front-rear direction along the movable guide body 421. Both upper support blocks 422 and 423 are mounted with width direction drive motors 424 and 425 for sliding each block in the front-rear direction, respectively. The width direction drive motors 424 and 425 are connected to rotating bodies that are screwed together with a pair of screw shafts 426 and 427 that are movable between the frames 400 and 401 together with the movable guide body 421 in the vertical direction. The upper support blocks 422 and 423 move in the front-rear direction along the movable guide body 421 by the rotational drive of the drive motors 424 and 425.

  A pair of swing levers 428 and 429 are provided swingably at lower portions of the upper support blocks 422 and 423, respectively. Both upper ruled line rolls 310A and 320A are rotatably attached to the free ends of both swing levers 428 and 429, respectively. Both swing levers 428 and 429 have arm portions 430 and 431 extending from the side surfaces, respectively. A roll operating air cylinder 432 is attached between the upper part of the upper support block 422 and the arm part 430, and a roll operating air cylinder 433 is attached between the upper part of the upper support block 423 and the arm part 431. Both swing levers 428 and 429 are movable between a pair of rotational drive shafts 434 and 435 provided so as to be movable in the vertical direction together with the movable guide body 421 between both frames 400 and 401. Each is provided. Both rotary drive shafts 434 and 435 are connected to both upper ruled line rolls 310A and 320A via timing belts and pulleys. Both rotary drive shafts 434 and 435 are connected to a rotary drive motor 407 shown in FIG. 3 via a power transmission mechanism including a known timing belt and gear mechanism. Both the upper ruled line rolls 310 </ b> A and 320 </ b> A are rotated clockwise in FIG. 2 by driving of the rotation drive motor 407.

  When the induction motor 416 is rotationally driven, the rotational motion is converted into a linear motion by the screw jack 417. The movable guide body 421 is positioned by being displaced in the vertical direction in accordance with the vertical movement of the output shaft 419 of the screw jack 417. With the movable guide body 421 positioned, the roll operating air cylinders 432 and 433 are activated or deactivated, so that the upper ruled line rolls 310A and 320A are compared with the lower ruled line rolls 311A and 321A. Can approach or separate. In FIG. 2, since the roll operating air cylinder 432 is in an inoperative state and the roll operating air cylinder 433 is in an operating state, the upper ruled line roll 310A is positioned away from the lower ruled line roll 311A, as indicated by a solid line, In other words, the upper ruled line roll 320A is in the rest position, and as shown by the solid line, it is in the position close to the lower ruled line roll 321A, that is, the operating position where the cardboard can be ruled. On the other hand, when the roll operating air cylinder 432 is changed to the operating state and the roll operating air cylinder 433 is changed to the inoperative state, the upper ruled line roll 310A is moved closer to the lower ruled line roll 311A as indicated by a two-dot chain line. Then, the upper ruled line roll 320A moves to a rest position separated from the lower ruled line roll 321A as indicated by a two-dot chain line.

  In the present embodiment, in order to support the corrugated cardboard passing through the scorers 31A and 32A from below, the fixed support member 436 is fixed between the lower ruled line rolls 311A and 321A at the same height as the transport path PL. Arranged. The combination of the screw jack 417, the movable guide body 421, the upper support blocks 422 and 423, and the swing levers 428 and 429 of this embodiment is an example of the roll support mechanism of the present invention.

(Configuration of slitter 33A)
The first slitter 33A includes a knife receiving member 330A and a slitter knife 331A. A groove that is continuous in the circumferential direction is formed in the approximate center of the circumferential surface of the knife receiving member 330A. The slitter knife 331A is composed of a thin disk-shaped rotary knife, and is configured to enter and mesh with the groove of the knife receiving member 330A when slitting cardboard. As will be described later, the knife receiving member 330A and the slitter knife 331A are supported so as to be displaceable in the vertical direction with respect to the transport path PL. In the present embodiment, as shown in FIG. 3, seven first slitters 33A-1 to 33A-7 are arranged in the front-rear direction. FIG. 2 is a cross-sectional view taken along the line AA indicated by the one-dot chain line in FIG. 3, and FIG. 2 illustrates the first slitter 33A-5 shown in FIG. 3 as the first slitter 33A.

(Configuration of vertical movement mechanism of knife receiving member 330A)
The vertical movement mechanism of the knife receiving member 330A is the same as the vertical movement mechanism of the upper ruled line rolls 310A and 320A described above in the configuration including the induction motor and the screw jack, but is not provided with an air cylinder. This is different from the vertical movement mechanism of the ruled line rolls 310A and 320A.

  2 and 3, a knife receiver vertical movement induction motor 437 and two screw jacks 438A and 438B are fixed on the upper beam 403 in order to displace the knife receiver 330A in the vertical direction. Both screw jacks 438A and 438B have the same configuration as the screw jack 417, and are devices that convert the rotational motion transmitted to the common input shaft 439 into linear motions in the axial direction of the output shafts 440A and 440B, respectively. The input shaft 439 is connected to the induction motor 437 via a timing belt 441 and a pulley.

  The lower end portions of the output shafts 440A and 440B are connected to the upper end portion of the movable guide body 442 extending in the front-rear direction. Both front and rear end portions of the movable guide body 442 are movable in the vertical direction while being guided by guide members provided on opposing surfaces of both frames 400 and 401. The upper support block 443 is attached to be slidable in the front-rear direction along the movable guide body 442. The upper support block 443 is mounted with a width direction drive motor 444 for sliding the block itself in the front-rear direction. The width direction drive motor 444 is connected to a rotating body that is screwed with a screw shaft 445 provided so as to be movable in the vertical direction together with the movable guide body 442 between the frames 400 and 401. The upper support block 443 moves in the front-rear direction along the movable guide body 442 by the rotational drive of the drive motor 444.

  The knife receiving member 330A is rotatably attached to the lower end portion of the upper support block 443. The upper support block 443 is provided so as to be movable in the axial direction and the rotational direction on a rotary drive shaft 446 provided so as to be movable in the vertical direction together with the movable guide body 442 between the frames 400 and 401. The rotary drive shaft 446 is connected to the knife receiving member 330A via a transmission belt and a pulley. The rotation drive shaft 446 is connected to the rotation drive motor 407 shown in FIG. 3 via a power transmission mechanism including a known timing belt and gear mechanism. The knife receiving member 330A is rotated clockwise in FIG.

  When the induction motor 437 is rotationally driven, the rotational motion is converted into linear motion by the screw jacks 438A and 438B. The movable guide body 442 is displaced and positioned in the vertical direction in accordance with the vertical movement of the output shafts 440A and 440B of the screw jacks 438A and 438B. Due to the positioning of the movable guide body 442 in the vertical direction, the knife receiving member 330A is displaced to an operating position where the knife receiving member 330A can come into contact with the upper surface of the cardboard transported along the transport path PL, or to a rest position spaced apart. The combination of the screw jacks 438A, 438B, the movable guide body 442, and the upper support block 443 of this embodiment is an example of the knife receiving support mechanism of the present invention.

(Configuration of the vertical movement mechanism of the slitter knife 331A)
The vertical movement mechanism of the slitter knife 331A is the same as the vertical movement mechanism of the upper ruled line rolls 310A and 320A described above in a basic configuration including an induction motor, a screw jack, and an air cylinder.

  In FIG. 2, a knife vertical movement induction motor 447 and two screw jacks 448A, 448B are fixed to the lower surface of the lower beam 405 in order to displace the slitter knife 331A in the vertical direction. The screw jacks 448A and 448B have a common input shaft 450 and output shafts 451A and 451B, and convert the rotational motion transmitted to the input shaft 450 into linear motions in the axial direction of the output shafts 451A and 451B, respectively. Device. The input shaft 450 is connected to the induction motor 447 via a timing belt 452 and a pulley.

  The upper ends of the output shafts 451A and 451B are connected to the lower end of a movable guide body 453 extending in the front-rear direction. Both front and rear end portions of the movable guide body 453 are movable in the vertical direction while being guided by guide members provided on opposing surfaces of both frames 400 and 401. The lower support block 454 is attached to be slidable in the front-rear direction along the movable guide body 453. The lower support block 454 is mounted with a width direction drive motor 455 for sliding the block itself in the front-rear direction. The width direction drive motor 455 is connected to a rotating body that is screwed together with a screw shaft 456 provided between the frames 400 and 401 so as to be movable in the vertical direction together with the movable guide body 453. The lower support block 454 moves in the front-rear direction along the movable guide body 453 by the rotational drive of the drive motor 455.

  A swing lever 457 is swingably provided on the upper portion of the lower support block 454. Both slitter knives 331A are rotatably attached to the free end of the swing lever 457. The swing lever 457 has an arm portion 458 extending from the side surface. A knife working air cylinder 459 is attached between the lower portion of the lower support block 454 and the arm portion 458. The swing lever 457 is provided on a rotary drive shaft 460 that is movable in the vertical direction together with the movable guide body 453 between the frames 400 and 401 so as to be movable in the axial direction and the rotational direction. The rotary drive shaft 460 is connected to the slitter knife 331A via a transmission belt and a pulley. The rotary drive shaft 460 is connected to the rotary drive motor 407 shown in FIG. 3 via a power transmission mechanism including a known timing belt and gear mechanism. The slitter knife 331A rotates counterclockwise in FIG.

  When the induction motor 447 is rotationally driven, the rotational motion is converted into linear motion by the screw jacks 448A and 448B. The movable guide body 453 is displaced in the vertical direction and positioned in accordance with the vertical movement of the output shafts 451A and 451B of the screw jacks 448A and 448B. With the movable guide body 453 positioned, the knife operating air cylinder 459 is activated or deactivated, so that the slitter knife 331A can approach or separate from the knife receiving member 330A. In FIG. 2, since the knife operating air cylinder 459 is in an inoperative state, the slitter knife 331A is at a position separated from the knife receiving member 330A, that is, at a rest position, as shown by a solid line. On the other hand, when the knife operating air cylinder 459 changes to the operating state, the slitter knife 331A moves to the operating position where it approaches and meshes with the knife receiving member 330A, as indicated by a two-dot chain line.

  In the present embodiment, the movable support member 461 is fixed at a position close to the swing fulcrum of the swing lever 457 in order to support the cardboard passing through the first slitter 33A from below. When the lower support block 453 is displaced in the vertical direction by the rotational drive of the induction motor 447, the movable support member 461 is also moved in the vertical direction with respect to the transport path PL. Further, when the knife operating air cylinder 459 is in an operating state, the movable support member 461 moves to a position that is closer to the transport path PL. In this state, the movable support member 461 can support the cardboard from below. The combination of the screw jacks 448A, 448B, the movable guide body 453, the lower support block 454, and the swing lever 457 of this embodiment is an example of the knife support mechanism of the present invention, and the lower support block 454 is the movable support of the present invention. The swing lever is an example of the support body of the present invention. Moreover, the movable support member 461 of the present embodiment is an example of the support member of the present invention.

(Configuration and arrangement of pulse generator)
In this embodiment, three pulse generators are actuated on the input shafts 418, 439, 450 to detect the vertical positions of the upper support blocks 422, 423, the upper support block 443, and the lower support block 454. Connected to In FIG. 4, a pulse generator 462 for detecting the vertical position of the upper support block 443 is connected to the input shaft 439 via a gear train, and a pulse signal corresponding to the rotation amount and rotation direction of the input shaft 439. Configured to generate. A pulse generator 463 for detecting the vertical position of the lower support block 454 is also connected to the input shaft 450 via a gear train as shown in FIG. A pulse generator for detecting the vertical position of the upper support blocks 422 and 423 is also connected to the input shaft 418 in the same manner as the pulse generator 462.

  Similarly to the first unit 30A described above, the second unit 30B is also configured to be displaced in the vertical direction by driving an induction motor and an air cylinder. That is, as shown in FIG. 6, the upper ruled line rolls 310 </ b> B and 320 </ b> B of the two scorers 31 </ b> B and 32 </ b> B are displaced in the vertical direction by driving the roll vertical movement induction motor 464 and the roll operation air cylinders 465 and 466, respectively. The knife receiving member 330 </ b> B of the second slitter 33 </ b> B is displaced in the vertical direction by driving the knife receiving vertical movement induction motor 467. The slitter knife 331B of the second slitter 33B is displaced in the vertical direction by driving the knife vertical movement induction motor 468 and the knife operating air cylinder 469.

<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. 5 is a block diagram showing an electrical configuration of the corrugating machine 1. In FIG. 5, a management device 100 monitors the overall operation of each production end and processing end device to produce double-sided cardboard sheets, and manages the production quantity of double-sided cardboard sheets for a plurality of consecutive orders. It is. Since the control operation of each device at the production end is already known and is not related to the present invention, the description of the configuration of the control device that controls each device at the production end is omitted and shown in FIG. Absent.

<Memory configuration>
The management program memory 110 is a memory in which a main control routine program and predetermined set values are fixedly stored for the management apparatus 100 to control the corrugating machine 1. For example, the predetermined set value is a unique set value determined from the configuration of the corrugating machine 1 or the like. The management work memory 120 is a memory that temporarily stores a calculation processing result processed when the management apparatus 100 executes the main control routine program. The management data memory 130 is a memory that fixedly stores a production management plan for a plurality of consecutive orders in a rewritable manner, and is composed of a hard disk. The management device 100 constitutes a computer together with storage means such as a management program memory 110 and a management work memory 120.

<Configuration of control device and drive device>
In order to drive or stop the double facer 10, the rotary shear 20, the slitter scorer 30, the cutoff device 40, and the stacker device 50, and individually control the driving speed, the double facer control device 140, the rotary shear control device 141, the slitter A scorer control device 142, a cut-off control device 143, and a stacker control device 144 are provided. These control devices 140 to 144 perform control operations according to instructions from the management device 100 and are connected to the management device 100 in order to notify the management device 100 of the current control state. The double facer driving device 150, the rotary shear driving device 151, the slitter scorer driving device 152, the cut-off driving device 153, and the stacker driving device 154 are arranged according to the control commands from the control devices 140 to 144. 30, the cut-off device 40, and the stacker device 50 are respectively driven, and include a drive motor and a positioning induction motor. The double facer drive device 150 includes a drive motor 13 that drives the upper pulley 14 and the lower pulley 15.

  The rotary shear control device 141 is connected to a known measuring instrument in order to track the order change position on the double-sided cardboard in accordance with the tracking command from the management device 100. The cut-off control device 143 is known in order to track the conveyance of the sheet length according to each order according to the tracking command from the management device 100 and to track the conveyance of the double-sided cardboard cut by the rotary shear 20. Connected with measuring instrument.

<Detailed Configuration of Slitter Scorer Control Device 142>
The slitter scorer control device 142 controls the rotational drive and the width direction movement of the scorer and the slitter constituting the first and second units 30A and 30B, and also controls the vertical movement. The control of the rotational drive of the scorer and the slitter and the movement in the width direction are well known and are not related to the present invention. Therefore, the description of the control and the drive of the rotation drive and the width direction movement is omitted. Control and driving of the scorer and the slitter in the vertical direction will be described in detail with reference to FIG.

  The slitter scorer control device 142 is mainly composed of a first unit control device 200 and a second unit control device 201. The first unit control device 200 controls the operation of the first unit 30A, and the second unit control device 201 controls the operation of the second unit 30B. The slitter scorer program memory 202 fixedly stores a control program executed by both unit control devices 200 and 201 and a predetermined set value. The slitter scorer work memory 203 temporarily stores control commands and various information supplied from the management apparatus 100, and temporarily stores results processed by executing the control program.

  The first unit controller 200 is connected to the pulse generator group 204 in order to detect the vertical positions of the upper ruled line rolls 310A, 320A, the knife receiving member 330A, and the slitter knife 331A. The second unit controller 201 is connected to the pulse generator group 205 in order to detect the vertical positions of the upper ruled line rolls 310B, 320B, the knife receiving member 330B, and the slitter knife 331B. The pulse generator group 204 includes pulse generators 462 and 463 provided in the first unit 30A, and includes three pulse generators. Similarly, the pulse generator group 205 includes three pulse generators provided in the second unit 30B.

  In this embodiment, the program memory 202 stores a slitter vertical movement control routine shown in FIG. 7, an upper ruled line roll vertical movement control routine shown in FIG. Further, the program memory 202 stores a position command table shown in FIG. 9 as a set value. The slitter scorer control device 142 including the first and second unit controllers 200 and 201 of the present embodiment is an example of the controller and roll controller of the present invention.

(Storage contents of position command table)
The position command table corresponds to A flute to E flute, which are corrugated cardboard flute types that can be produced by the corrugating machine 1 of the present embodiment, and the slitter knife operation position command values KS1 to KS4 and the knife receiving member The operation position command values RS1 to RS4 and the rest position command values RW1 to RW4 and the upper ruled line roll operation position command values CS1 to CS4 are stored. The contents stored in the position command table will be described with reference to FIGS. FIG. 10 shows a state in which the knife receiving member 330A and the slitter knife 331A are respectively positioned at an operation position indicated by a solid line where slit processing can be performed on the cardboard and a rest position indicated by a two-dot chain line separated from the cardboard. In FIG. 9, the operation position command value of the slitter knife is calculated between the upper end portion of the slitter knife 331A and the upper surface of the transport path PL when the air cylinder 459 is operated and the slitter knife 331A is positioned at the operation position shown in FIG. This is a value for commanding the distance KSD. The operation position command value of the knife receiving member is a value for instructing the distance RSD between the lower end portion of the knife receiving member 330A and the upper surface of the transport path PL when the knife receiving member 330A is located at the operating position shown in FIG. . The rest position command value of the knife receiving member is a value that commands a distance RWD between the lower end portion of the knife receiving member 330A and the upper surface of the transport path PL when the knife receiving member 330A is located at the rest position shown in FIG. .

The upper ruled line roll operating position command value is such that when the air cylinder 432 or the air cylinder 433 is operated and the upper ruled line roll 310A or the upper ruled line roll 320A is positioned at the operating position where the ruled line processing can be performed, the upper ruled line roll 310A. Or it is a value which commands the distance between the lower end portion of the upper ruled line roll 320A and the upper surface of the transport path PL.

  In the present embodiment, the pause position command value for the slitter knife and the upper ruled line roll is not stored in the position command table. For example, regarding the slitter knife 331A, the movable range in the vertical direction of the lower support block 454 is a range corresponding to the thickness range of the corrugated cardboard that can be produced, and the slitter knife 331A is moved in the vertical direction by the operation and non-operation of the air cylinder 459. Is set sufficiently smaller than the range of movement. Therefore, even when the lower support block 454 is positioned at the uppermost position of the movable range, the upper end portion of the slitter knife 331A is lowered from the transfer path PL due to the inoperative operation of the air cylinder 459, and the cardboard is transferred. Can be evacuated to a position where there is no problem. That is, the upper end portion of the slitter knife 331A is lowered by the distance KWD shown in FIG. 10 from the upper surface of the conveyance path PL and retracted to a position sufficiently separated from the cardboard due to the inoperative air cylinder 459. In addition, regarding the upper ruled line rolls 310A and 320A, even when the upper support block 421 is located at the lowest position in the movable range, the upper ruled line rolls 310A and 320A are transported due to the non-operation of the air cylinders 432 and 433. The cardboard having the maximum thickness located on the path PL, in this embodiment, can rise from the upper surface of the corrugated cardboard of the A flute and retreat to a position that does not hinder the transport of the cardboard. As a result, with respect to the slitter knife and the upper ruled line roll, the slitter knife and the upper ruled line roll move to a rest position separated from the cardboard simply by disabling the air cylinder corresponding to each member. The pause position command value of the ruled line roll need not be stored separately from the operating position command value. Even when the rest position command value does not need to be stored, the rest positions of the slitter knife and the upper ruled line roll are the operation position command value and the cylinder non-operation command for deactivating the corresponding air cylinder. Is understood to be commanded.

  The operation position command value of the knife receiving member is the total value of the thickness of the corrugated cardboard of each flute and a predetermined allowable operation value. The rest position command value of the knife receiving member is the total value of the corrugated cardboard thickness of each flute and a predetermined rest allowable value. The operating position command value of the slitter knife is a total value of the operating position command value of the knife receiving member and a predetermined meshing amount. The predetermined meshing amount is a difference between the distance KSD and the distance RSD shown in FIG. 10, and is usually set to a constant value. In this embodiment, the operation allowable value is set to 1 mm, and the pause allowable value is set to 3 mm. The allowable operating value of 1 mm is the total thickness variation of the two liner base papers and the single core base paper constituting one double-sided corrugated cardboard. Is a total value of thickness variations of a large number of liner base papers and a large number of core base papers constituting the double-sided cardboard. The pause allowance of 3 mm is the thickness of each base paper and the splicing of each base paper, assuming that all two liner base papers and one core base paper constituting a single-layer double-sided cardboard are spliced simultaneously. This is a value obtained by adding the above-described allowable operation value of 1 mm to the total value obtained by adding the thicknesses of the double-sided adhesive tapes for the number of base papers. By setting the rest allowable value, it is possible to prevent the paper joint portion of the double-sided cardboard from colliding with the knife receiving member whose rotation is stopped at the pause position and applying a large resistance to the double-sided cardboard. The predetermined meshing amount of the present embodiment is an example of the engagement amount between the knife receiving member and the slitter knife of the present invention.

  The position command table of the slitter scorer program memory 202 of this embodiment is an example of the information acquisition unit and storage unit of the present invention. Operating positions command values RS1 to RS4 and KS1 to KS4 of the knife receiving member 330A and the slitter knife 331A stored in the position command table of the present embodiment indicate the knife receiving operating position and the knife operating position of the present invention, respectively. It is an example of information, and the rest position command values RW1 to RW4 of the knife receiving member 330A of the present embodiment are an example of rest position information indicating the knife rest position of the present invention. A combination of the operation position command values KS1 to KS4 of the slitter knife 331A of the present embodiment and the cylinder non-operation command for instructing the non-operation of the air cylinder 459 is an example of the rest position information indicating the knife rest position of the present invention. .

<Detailed Configuration of Slitter Scorer Driving Device 152>
The slitter scorer driving device 152 includes a knife receiver vertical motion driving circuit 210, a knife vertical motion driving circuit 211, and a roll vertical motion driving circuit 212 controlled by the first unit control device 200, and a second unit control device. A knife receiver vertical movement drive circuit 213 controlled by 201, a knife vertical movement drive circuit 214, and a roll vertical movement drive circuit 215 are included.

  The knife receiver vertical movement drive circuit 210 receives a position command value and a drive control command regarding the vertical position of the knife receiver member 330A from the first unit controller 200, and drives the knife receiver vertical movement induction motor 437. In the present embodiment, the first unit control device 200, the knife receiver vertical movement drive circuit 210, the knife receiver vertical movement induction motor 437, and the pulse generator group 204 feedback control the positioning of the knife receiver member 330A in the vertical direction. Configure the control loop. The other drive circuits 211 to 215 also constitute part of a control loop for feedback control, like the knife receiver vertical movement drive circuit 210. The knife vertical movement drive circuit 211 receives a position command value and a drive control command related to the vertical position of the slitter knife 331A, and an operation control command for commanding operation and non-operation of the slitter knife 331A from the first unit controller 200. In response, the knife receiver vertical movement induction motor 437 is driven and the knife operating air cylinder 459 is operated. The roll vertical movement drive circuit 212 receives a position command value and a drive control command related to the vertical position of the upper ruled line rolls 310A and 320A, and the operation and inactivation of the upper ruled line rolls 310A and 320A from the first unit controller 200. In response to the operation control command to be instructed, the roll vertical movement induction motor 416 is driven and the two roll operation air cylinders 432 and 433 are operated.

The knife receiver vertical movement drive circuit 213 receives the position command value and the drive control command regarding the vertical position of the knife receiver 330B from the second unit controller 201, and drives the knife receiver vertical movement induction motor 467. The knife vertical movement drive circuit 214 receives a position command value and a drive control command related to the vertical position of the slitter knife 331B, and an operation control command for commanding operation and non-operation of the slitter knife 331B from the second unit controller 201. In response, the knife receiving vertical movement induction motor 468 is driven and the knife operating air cylinder 469 is operated. The roll up / down movement drive circuit 215 receives a position command value and a drive control command related to the vertical position of the upper ruled line rolls 310B and 320B, and an operation and non-operation of the upper ruled line rolls 310B and 320B from the second unit controller 201. In response to the operation control command to be commanded, the roll vertical movement induction motor 464 is driven and the two roll operation air cylinders 465 and 466 are operated. The slitter scorer driving device 152 including the knife receiver vertical movement induction motors 437 and 467 and the knife receiver vertical movement drive circuits 210 and 213 according to the present embodiment is an example of the knife receiver driving unit according to the present invention. The slitter scorer driving device 152 including the vertical movement induction motors 437 and 467, the knife operating air cylinders 459 and 469, and the knife receiver vertical movement driving circuits 211 and 214 is an example of the knife driving unit of the present invention. Further, the slitter scorer driving device 152 including the roll vertical movement induction motors 416 and 464, the roll operating air cylinders 432, 433, 465, and 466 and the knife receiver vertical movement driving circuits 212 and 215 according to the present embodiment is the roll of the present invention. It is an example of a drive part.

<< Operation and Action of Embodiment >>
The operation and action of the corrugating machine 1 according to this embodiment will be described below with reference to FIGS. In general, it is well known that corrugating machines sequentially produce corrugated boards of different types of flutes according to a plurality of consecutive orders. The operation of the slitter scorer 30 related to the slitter will be mainly described.

  Corrugating machine 1 produces the thinnest E flute cardboard according to the (N-1) th order among the A flute to E flute cardboards, and the thickest A flute cardboard according to the Nth order. The operation of the slitter scorer 30 is as follows, assuming that a thin C flute cardboard is produced according to the (N + 1) th order, and a B flute cardboard thicker than the C flute and thinner than the A flute is produced according to the (N + 2) th order. Explained.

<Processing of A flute into corrugated cardboard>
When the execution of the Nth order is started in the production management plan stored in the management data memory 130, the slitter scorer 30 sets the first and the slit processing positions and the ruled line processing positions according to the Nth order. The scorer and slitter of any of the second units 30A and 30B are moved and positioned in the width direction, and are moved and positioned in the vertical direction. In the present embodiment, as illustrated in FIG. 1, the first unit 30 </ b> A is operated to execute the Nth order, and the second unit 30 </ b> B is paused. Since the operation of positioning the scorer and the slitter in the width direction is well known, the description of the positioning operation in the width direction is omitted, and the positioning operation in the vertical direction will be described in detail below.

(Scorer vertical positioning)
In order to position the scorers 31A, 32A in the vertical direction, the upper ruled line roll vertical movement control routine stored in the slitter scorer program memory 202 is in accordance with the order change command from the management device 100, and the first and second unit control devices. 200, 201. Thereby, execution of the upper ruled line roll up / down movement control routine shown in FIG. 7 is started.

  The operation position command value of the upper ruled line roll corresponding to the flute type of the second order after the previous order is read from the position command table and temporarily stored in the slitter scorer work memory 203 (SA1). In this case, the second order after the previous order is the (N + 1) th order that is two orders after the (N-1) th order that is the previous order. Since the (N + 1) th order is an order related to the C flute, the operation position command value CS3 corresponding to the C flute is read from the position command table.

  The operation position command value of the upper ruled line roll of the unit that executed the previous order is set to the operation position command value CS3 stored in step SA1, and stored in the work memory 203 (SA2). In this case, since the unit that executed the previous order is the second unit 30B, the operation position command values of the upper ruled line rolls 310B and 320B of the unit 30B are set.

  It is determined whether or not a switching command has been sent from the management device 100 to the first and second unit control devices 200 and 201 (SA3). If the switching command is not sent (SA3: NO), the determination in step SA3 is repeatedly executed. When the switching command is sent (SA3: YES), the process proceeds to step SA4. The switching command indicates that the upper ruled line roll of the unit that executed the previous order moves to a rest position that is separated from the cardboard, and the upper ruled line roll of the unit that executes the subsequent order can operate the cardboard. Command to move to.

  The upper ruled line roll of the unit that executed the previous order moves to the rest position due to the non-operation of the air cylinder, and is then positioned according to the set operation position command value CS3 (SA4). Specifically, the second unit control device 201 generates a cylinder non-operation command based on the switching command, operates the roll up / down movement drive circuit 215 in accordance with the cylinder non-operation command, and operates the roll operation air shown in FIG. The cylinders 465 and 466 are deactivated. Thereafter, the second unit control device 201 operates the roll vertical movement drive circuit 215 according to the operation position command value CS3 according to the (N + 1) th order set in step SA2, and the roll vertical movement induction motor shown in FIG. The driving of 464 is controlled. As a result, the upper ruled line rolls 310B and 320B can move from the transport path PL to an upper position and can be retracted to a rest position that does not hinder the transport of the cardboard.

  The upper ruled line roll of the unit that executes the subsequent order is moved to the operating position by the operation of the air cylinder (SA5). In this case, depending on the contents of the order, both the upper ruled line rolls 310A and 320A may be used for ruled line processing, or only one roll may be used for ruled line processing as shown in FIG. . In the present embodiment, description will be made assuming that only one roll is used. Specifically, the first unit control device 200 that controls the first unit 30A that executes the Nth order, which is the subsequent order, generates a cylinder operation command based on the switching command, and this cylinder operation command Accordingly, the roll up / down motion drive circuit 212 is operated, the roll operating air cylinder 433 is operated, and the roll operating air cylinder 432 is deactivated. At this time, the upper ruled line roll 320A of the first unit 30A has already been positioned in accordance with the operation position command value CS1 in step SA4 executed previously. For this reason, the upper ruled line roll 320A is moved to the operating position close to the lower ruled line roll 321A only by the operation of the air cylinder 433, and the upper ruled line roll 310A is moved from the lower ruled line roll 311A only by the non-operation of the air cylinder 432. It is located in a separated rest position. In this state, the upper ruled line roll 320A and the lower ruled line roll 321A can perform ruled line processing on the corrugated cardboard of A flute. The upper ruled line roll 320A is positioned at an operating position corresponding to the thickness of the A flute corrugated cardboard BAF, so that the upper ruled line roll 320A can apply a ruled line having an appropriate depth on the upper surface of the cardboard BAF. It is possible to prevent damage.

(Slitter vertical positioning operation)
In order to position the knife receiving member 330A and the slitter knife 331A of the slitter 33A in the vertical direction, the slitter vertical movement control routine stored in the slitter scorer program memory 202 is controlled in accordance with the order change command from the management device 100. 2 unit control devices 200 and 201. Thereby, the execution of the slitter vertical movement control routine shown in FIG. 8 is started.

  In FIG. 8, the position command value corresponding to the flute type of the previous order is read from the position command table and temporarily stored in the slitter scorer work memory 203 (SB1). In this case, the previous order is the (N−1) th order ahead of the Nth order to be executed. Since the (N-1) th order is an order related to the E flute, the operation position command value KS4 of the slitter knife corresponding to the E flute and the rest position command value RW4 of the knife receiving member are read from the position command table. It is.

  The position command value corresponding to the flute type of the subsequent order is read from the position command table and temporarily stored in the slitter scorer work memory 203 (SB2). In this case, the subsequent order is the Nth order to be executed. Since the Nth order is an order for processing the corrugated cardboard of the A flute, the slitter knife operating position command value KS1 corresponding to the A flute and the rest position command value RW1 of the knife receiving member are obtained from the position command table. Read out.

  The rest position command value of the knife receiving member of the unit that executed the previous order is set to a large rest position command value, and is temporarily stored in the work memory 203 (SB3). In this case, the unit that executed the previous order is the second unit 30B because the first unit 30A is scheduled to execute the Nth order. The large pause position command value is a larger pause position command value between the (N-1) th order which is the previous order and the Nth order which is the subsequent order. Since the rest position command value RW1 for the A flute, which is the thickest cardboard, is the largest rest position command value, the larger rest position command value is the rest position command value RW1.

  The operating position command value of the slitter knife of the unit that executed the previous order is set to a large operating position command value, and is temporarily stored in the work memory 203 (SB4). The large operating position command value is a larger operating position command value between the (N-1) th order which is the previous order and the Nth order which is the subsequent order, but at this stage, Since the operation position command value KS1 for the A flute, which is the thickest cardboard, is the largest operation position command value, the large operation position command value is the operation position command value KS1.

  It is determined whether or not a standby command is sent from the management device 100 to the first and second unit control devices 200 and 201 (SB5). If the standby command is not sent (SB5: NO), the determination in step SB5 is repeated. When a standby command is sent (SB5: YES), the process proceeds to step SB6. The standby command instructs the preparation of the knife receiving member of the unit that executes the subsequent order to move to the operating position according to the subsequent order.

  The knife receiving member of the unit that executes the subsequent order moves to the operating position according to the large operating position command value (SB6). In this case, with respect to the knife receiving member, the larger operation position command value is larger between the (N-1) th order which is the previous order and the Nth order which is the subsequent order. However, at this stage, since the operation position command value RS1 regarding the A flute which is the thickest cardboard is the largest operation position command value, the large operation position command value is the operation position command value RS1. Since the unit that executes the subsequent order is the first unit 30A, the knife receiving member 330A of the unit 30A moves to the operating position according to the large operating position command value RS1. Specifically, the first unit controller 200 operates the knife receiver vertical movement drive circuit 210 in accordance with the operation position command value RS1, and controls the drive of the knife vertical movement induction motor 437. Accordingly, the upper support block 443 shown in FIG. 2 moves in the vertical direction, and the lower end portion of the knife receiving member 330A can be in contact with the upper surface of the corrugated cardboard of the A flute transported along the transport path PL. Is positioned. In the present embodiment, when the corrugated board processed according to the previous order is thicker than the corrugated board processed according to the subsequent order, the knife receiving member of the unit that executes the subsequent order is operated according to the operation position command value of the subsequent order. If it is lowered and positioned in the vertical direction, it may collide with a thick cardboard processed according to the previous order. Therefore, before the knife receiving member is positioned at the operating position corresponding to the thickness of the cardboard to be slit according to the subsequent order, the knife receiving member is moved to the upper operating position according to the large operating position command value corresponding to the thick cardboard. Therefore, it is possible to reliably prevent a collision with a thick cardboard.

  It is determined whether or not a switching command has been sent from the management device 100 to the first and second unit control devices 200 and 201 (SB7). If the switching command is not sent (SB7: NO), the determination in step SB7 is repeatedly executed. When the switching command is sent (SB7: YES), the process proceeds to Step SB8. The switching command is that the slitter of the unit that executed the previous order moves to a rest position that is separated from the cardboard, and the slitter of the unit that executes the subsequent order moves to an operating position where the cardboard can be processed. Is commanded.

  According to the set rest position command value, the knife receiving member of the unit that executed the previous order moves to the rest position (SB8). In this case, since the unit that executed the previous order is the second unit 30B, the knife receiving member 330B of the unit 30B moves to the rest position according to the rest position command value RW1 set in step SB3. Specifically, the second unit control device 201 operates the knife receiver vertical movement drive circuit 213 according to the rest position command value RW1 to control the drive of the knife receiver vertical movement induction motor 467 shown in FIG. Thereby, when the thick corrugated cardboard BAF having the A flute is transported, the knife receiving member 330B can be retracted to a rest position that does not hinder the transport of the corrugated cardboard.

  The slitter knife of the unit that executed the previous order is moved to the rest position due to the non-operation of the air cylinder, and then positioned according to the set operation position command value (SB9). In this case, since the unit that executed the previous order is the second unit 30B, the slitter knife 331B of the unit 30B moves to the rest position due to the non-operation of the air cylinder, and is then set in step SB4. Positioning is performed according to the operating position command value KS1. Specifically, the second unit control device 201 generates a cylinder non-operation command based on the switching command, operates the knife vertical movement drive circuit 214 according to the cylinder non-operation command, and operates the knife operation air shown in FIG. Cylinder 469 is deactivated. Thereafter, the second unit control device 201 operates the knife vertical movement drive circuit 214 according to the operation position command value KS1, and controls the drive of the knife vertical movement induction motor 468 shown in FIG. As a result, the slitter knife 331B can move from the transport path PL to a lower position, and can be retracted to a rest position that does not hinder the transport of the cardboard. In this embodiment, when the rest position command value of the knife receiving member is set to a large rest position command value in step SB3, the operating position command value of the slitter knife that meshes with the knife receiving member is set in step SB4. , A large operating position command value is set. As a result, the knife receiving member and the slitter knife that mesh with each other can be retracted to the rest position while maintaining a predetermined meshing amount.

  In accordance with the operation position command value corresponding to the flute type of the subsequent order, the knife receiving member and the slitter knife of the unit that executes the subsequent order move to the operation position (SB10). In this case, since the subsequent order is the Nth order for processing the cardboard of the A flute, the operation position command value RS1 of the knife receiving member corresponding to the A flute and the operation position command value KS1 of the slitter knife are obtained. , Read from the position command table. In accordance with the read operation position command value, the knife receiving member 330A and the slitter knife 331A of the first unit 30A move to the operation position after the positioning operation in step SB6 is completed. Specifically, the first unit controller 200 operates the knife receiver vertical movement drive circuit 210 in accordance with the operation position command value RS1, and controls the drive of the knife receiver vertical movement induction motor 437. Since the knife receiving member 330A is already positioned in accordance with the operation position command value RS1 in step SB6, the induction motor 437 is driven only for a short time and then stopped. The first unit controller 200 operates the knife vertical movement drive circuit 211 in accordance with the operation position command value KS1, and controls the drive of the knife vertical movement induction motor 447. Further, the first unit control device 200 generates a cylinder operation command based on the switching command, operates the knife vertical movement drive circuit 211 according to the cylinder operation command, and operates the knife operation air cylinder 459. As a result, the lower support block 454 is positioned in the vertical direction by driving the induction motor 447, and the slitter knife 331A is in the air cylinder 459 at the operating position where it engages with the knife receiving member 330A positioned at the operating position with a predetermined meshing amount. It moves by the operation of. In this state, the knife receiving member 330A and the slitter knife 331A can slit the corrugated cardboard of the A flute. FIG. 11 shows a state where the upper surface of the corrugated board BAF having a thick A flute comes into contact with the knife receiving member 330A and slit processing is performed. When slitting a thick cardboard, the slitter knife 331A rises higher from the upper surface of the transport path PL than when a thin cardboard is slit, so that the movable cardboard fixed to the lower support block 454 is movable. The support member 461 can sufficiently approach the lower surface of the cardboard and reliably support the lower surface.

<C flute processing to corrugated cardboard>
The slitter vertical movement control routine executes the first and second in accordance with the order change command from the management apparatus 100 so that the (N + 1) th order for processing the corrugated cardboard of the C flute is executed by the second unit 30B. It is executed by the unit control devices 200 and 201.

(Scorer vertical positioning)
In order to position the scorers 31 </ b> B and 32 </ b> B in the vertical direction, the upper ruled line roll vertical movement control routine is executed by the first and second unit control devices 200 and 201 in accordance with the order change command from the management device 100. The operation position command value of the upper ruled line roll corresponding to the flute type of the order (N + 2) which is the second order after the Nth order which is the previous order is read from the position command table and stored in the work memory 203. Temporarily stored (SA1). In this case, since the order of (N + 2) is an order related to the B flute, the operation position command value CS2 of the upper ruled line roll is read from the position command table. The operation position command value of the upper ruled line rolls 310A and 320A of the first unit 30A that has executed the Nth order, which is the previous order, is set to the operation position command value CS2 stored in step SA1 and stored in the work memory 203. Stored (SA2).

  It is determined whether or not a switching command has been sent from the management device 100 to the first and second unit control devices 200 and 201 (SA3). When the switching command is sent (SA3: YES), the process proceeds to step SA4. The upper ruled line rolls 310A and 320A move to the rest position due to the non-operation of the air cylinders 432 and 433, and are then positioned according to the set operation position command value CS2 (SA4). Specifically, the first unit control device 200 generates a cylinder non-operation command based on the switching command, operates the roll vertical movement drive circuit 212 in accordance with the cylinder non-operation command, and roll-operated air cylinders 432 and 433. Is disabled. Thereafter, the first unit controller 200 operates the roll vertical movement drive circuit 212 according to the operation position command value CS2 according to the (N + 2) th order set in step SA2, and drives the roll vertical movement induction motor 416. Control. Accordingly, the upper ruled line rolls 310A and 320A can move from the transport path PL to an upper position and can be retracted to a rest position where there is no hindrance to the cardboard transport.

  Since the upper ruled line rolls 310B and 320B have already been positioned in accordance with the operation position command value CS3 corresponding to the C flute of the (N + 1) th order, which is the subsequent order, by the step SA4 executed previously, the upper ruled line roll 310B 320B are moved to the operating position only by the operation of the air cylinder (SA5). Specifically, the second unit control device 201 generates a cylinder operation command based on the switching command, operates the roll vertical movement drive circuit 215 according to the cylinder operation command, operates the roll operation air cylinder 466, The roll operating air cylinder 465 is deactivated. Thus, in the state where the upper support block to which both upper ruled line rolls 310B and 320B are fixed is already positioned in the vertical direction by the drive of the induction motor 464, the upper ruled line roll 320B is moved only by the operation of the air cylinder 466. The upper ruled line roll 310B moves to the operating position close to the ruled line roll 321B, and the upper ruled line roll 310B is positioned at the rest position separated from the lower ruled line roll 311B only by the inactivation of the air cylinder 465. In this state, the upper ruled line roll 320B and the lower ruled line roll 321B can perform ruled line processing on the corrugated cardboard of the C flute. The upper ruled line roll 320B is positioned at an operating position corresponding to the thickness of the A flute corrugated cardboard BAF, so that the upper ruled line roll 320B can apply a ruled line having an appropriate depth on the upper surface of the cardboard BAF. It is possible to prevent damage.

(Slitter vertical positioning operation)
Position command values RW1 and KS1 corresponding to the A flute of the Nth order which is the previous order are read from the position command table and temporarily stored in the work memory 203 (SB1). The position command values RW3 and KS3 corresponding to the C flute of the order (N + 1) which is the later order are read from the position command table and temporarily stored in the work memory 203 (SB2). The rest position command value of the knife receiving member 330A of the first unit 30A that has executed the Nth order, which is the previous order, is set to a rest position command value RW1 that is larger than the rest position command value RW3. Temporarily stored (SB3). The operating position command value of the slitter knife 331A of the first unit 30A that has executed the Nth order, which is the previous order, is set to an operating position command value KS1 that is larger than the operating position command value KS3, and is temporarily stored in the work memory 203. Stored (SB4).

  It is determined whether or not a standby command is sent from the management device 100 to the first and second unit control devices 200 and 201 (SB5). When a standby command is sent (SB5: YES), the process proceeds to step SB6. The knife receiving member 330B of the second unit 30B that executes the (N + 1) th order, which is the later order, moves to the operating position according to the operating position command value RS1 that is larger than the operating position command value RS3 (SB6). Specifically, the second unit control device 201 operates the knife receiver vertical movement drive circuit 213 according to the operation position command value RS1, and controls the drive of the knife vertical movement induction motor 467 shown in FIG. As a result, the upper support block to which the knife receiving member 330B is fixed moves up and down, and the lower end portion of the knife receiving member 330B is positioned at an operating position where it can contact the top surface of the thickest A flute cardboard. .

  It is determined whether or not a switching command has been sent from the management device 100 to the first and second unit control devices 200 and 201 (SB7). When the switching command is sent (SB7: YES), the process proceeds to Step SB8. In accordance with the set rest position command value RW1, the knife receiving member 330A moves to the rest position (SB8). Specifically, the first unit control device 200 operates the knife receiver vertical movement drive circuit 210 according to the rest position command value RW1 to control the drive of the knife receiver vertical movement induction motor 437. Thereby, when the thick corrugated cardboard having the A flute is being transported, the knife receiving member 330A can be retracted to a rest position that does not hinder the transport of the corrugated cardboard.

  The slitter knife 331A moves to the rest position due to the non-operation of the air cylinder 459, and is then positioned according to the set operation position command value KS1 (SB9). Specifically, the first unit control device 200 generates a cylinder non-operation command based on the switching command, operates the knife vertical movement drive circuit 211 according to the cylinder non-operation command, and disables the knife operation air cylinder 459. Activate. Thereafter, the first unit control device 200 operates the knife vertical movement drive circuit 211 in accordance with the operation position command value KS1, and controls the drive of the knife vertical movement induction motor 447. As a result, the slitter knife 331A moves from the transport path PL to a lower position, and can be retracted to a rest position that does not hinder the transport of the cardboard.

  The knife receiving member 330B and the slitter knife 331B move to the operating position after the positioning operation in step SB6 in accordance with the operating position command values RS3 and KS3 corresponding to the C flute of the (N + 1) th order which is the subsequent order (SB10). ). Specifically, the second unit controller 201 operates the knife receiver vertical movement drive circuit 213 according to the operation position command value RS3 to control the drive of the knife receiver vertical movement induction motor 467. The second unit controller 201 operates the knife vertical movement drive circuit 214 in accordance with the operation position command value KS3 to control the drive of the knife vertical movement induction motor 468. Further, the second unit control device 201 generates a cylinder operation command based on the switching command, operates the knife vertical movement drive circuit 214 according to the cylinder operation command, and operates the knife operation air cylinder 469. Accordingly, the lower support block to which the slitter knife 331B is fixed is positioned in the vertical direction by driving the induction motor 468, and the slitter knife 331B is engaged with the knife receiving member 330B positioned at the operating position with a predetermined engagement amount. The position is moved by the operation of the air cylinder 469. In this state, the knife receiving member 330B and the slitter knife 331B can slit the corrugated cardboard of the C flute.

  FIG. 12 shows a state in which slit processing is performed by contacting the upper surface of the corrugated cardboard BCF having a thin C flute with the knife receiving member 330B. Even when a thin corrugated board is slit, the lower end portion of the knife receiving member 330A can contact the upper surface of the thin corrugated cardboard of the C flute. Therefore, even with a thin corrugated board, flutter during slitting can be reliably prevented. . FIG. 13 shows a position where the knife receiving member 330B-1 and the slitter knife 331B-1 are operated and the position of the conveying path PL when slitting is performed on a corrugated cardboard BCF having a thin C flute in a form to which the present invention is not applied. It is explanatory drawing which shows a relationship. The lower end portion of the knife receiving member 330B-1 is fixed at a fixed position according to the thickness of the thickest A flute cardboard BAF, and does not change even if the thickness of the cardboard changes due to the order change. is there. In this configuration, when the cardboard thinner than the flute is slit, the lower end portion of the knife receiving member 330B-1 is positioned away from the thin cardboard BCF. A phenomenon that the thin corrugated cardboard BCF flutters with the rotation and there is a problem that the slit processing cannot be performed with high accuracy. However, as shown in FIG. 12, the knife receiving member 330B is displaced in the vertical direction in accordance with the thickness of the thin cardboard BCF, so that flapping of the cardboard is reliably prevented.

  As shown in FIG. 12, the second unit 30B includes a movable support member 461B close to the position where the knife receiving member 330B and the slitter knife 331B mesh with each other, like the first unit 30A. When slit processing is performed on a thin cardboard such as a C flute, the movable support member 461B moves downward together with the slitter knife 331B. Therefore, the distance between the lower surface of the thin cardboard BCF and the movable support member 461B is shown in FIG. The distance between the lower surface of the corrugated cardboard BAF of the A flute and the movable support member 461 is larger. However, thin cardboard BCF is often curved and deformed upward due to the rotational force of slitter knife 331B. Therefore, when slitting thin cardboard, it is more movable than when slitting thick cardboard. The support member 461B does not need to support the lower surface of the cardboard. As a result, even if the distance between the movable support member 461B and the lower surface of the thin cardboard is increased, there is almost no influence on the accuracy of the slit processing.

[Modification]
The embodiment of the present invention has been described above, but various modifications can be made by those skilled in the art without departing from the spirit of the present invention.

(1) The corrugating machine 1 of the present embodiment is configured to produce double-sided cardboard, but instead of this configuration, the slitter of the present invention is also applied to a corrugated machine capable of producing multiple layers of double-sided cardboard. can do. In this case, the knife receiving operation position of the knife receiving member is determined based on the flute type of each layer and the thickness of the base paper related to the total thickness of the corrugated cardboard of the plurality of layers. The knife operating position is determined so that the knife receiving member and the slitter knife positioned at the knife receiving operating position determined according to the total thickness of the cardboards of the plurality of layers mesh with each other by a predetermined amount. A corrugating machine capable of producing multiple layers of double-sided corrugated cardboard is known from US Pat. No. 4,576,663 and drawings. For this reason, the corrugating machine that switches between single-layer double-sided cardboard and multiple-layered double-sided cardboard and the corrugated machine that switches the flute type of each layer of multi-layered cardboard to produce cardboard The slitter of the invention can be applied.

(2) The slitter scorer 30 according to the present embodiment includes the first and second units 30A and 30B, and the other unit performs positioning preparation for processing according to the subsequent order during processing of one unit. It is. Instead of this configuration, a slitter scorer composed of a single unit may be employed. In this case, the slitter and the scorer of a single unit are moved and positioned in the vertical direction and the width direction in order to perform the processing according to the subsequent order after the processing according to the previous order is completed when the order is changed. There is a need. A slitter scorer having a single unit is known from Japanese Patent Application Laid-Open No. 2004-276231.

(3) In the present embodiment, the knife receiving member 330A is displaced in the vertical direction in response to the driving force of the motor drive unit including the induction motor 437 and the screw jack 438A, and the slitter knife 331A and the upper ruled line rolls 310A and 320A In this configuration, the driving force is a combination of a motor driving unit including induction motors 447 and 416 and screw jacks 448A and 417, and a cylinder driving unit including air cylinders 459, 432, and 433, and is displaced in the vertical direction. Instead of this configuration, the knife receiving member may be configured to receive the driving force of the combination of the motor driving unit and the cylinder driving unit, and the slitter knife and the upper ruled line roll may be configured to receive the driving force of only the motor driving unit. . However, the slitter knife and the upper ruled line roll require a large driving force at a relatively high speed because slitting and ruled line processing is performed by allowing the processing tool portion to enter the inside of the cardboard, so that positioning in the vertical direction is Separately, when the machining operation is performed, a relatively large driving force, for example, a pressing force is given by the cylinder driving unit. On the other hand, the knife receiving member comes into contact with the upper surface of the corrugated cardboard and suppresses flapping of the corrugated cardboard. Therefore, a large driving force is not required during the processing operation, and therefore the knife receiving member is driven only by the motor driving unit. In this embodiment, the induction motor is used to position the knife receiving member or slitter knife in the vertical direction. However, when high-speed and high-precision positioning is required, the servo motor is used as the vertical movement drive motor. May be used.

(4) In this embodiment, the position command values of the slitter knife, the knife receiving member, and the upper ruled line roll are stored in the position command table provided in the slitter scorer program memory 202. The position command value stored in the position command table is determined in advance corresponding to the flute type related to the cardboard thickness. Instead of this configuration, information on the thickness of the cardboard is calculated from information on the flute type and the paper thickness of the base paper supplied from the management device, and based on this calculated information, the position in the vertical direction of the slitter knife, etc. The position command value for commanding may be calculated. Alternatively, a thickness detector that detects the thickness of the cardboard sent from the double facer of the corrugating machine is provided, and a position command that commands the vertical position of a slitter knife, etc., based on the detection result from the thickness detector A configuration in which a value is calculated may be used.

(5) In the present embodiment, the movable support member 464 is fixed to the upper portion of the lower support block 454 in order to support the cardboard passing through the slitter 33A from below, and is configured to be displaced in the vertical direction together with the slitter knife 331A. Is done. Instead of this configuration, a support member that supports the corrugated cardboard that passes through the slitter from below may be configured to be fixed to the frame of the slitter scorer. In this case, since the support member needs to be disposed away from the movement range of the slitter knife in the width direction, the cardboard can be supported at a position close to the position where the slitter knife and the knife receiving member are engaged with each other. Disappear.

(6) In this embodiment, the slitter scorer control device 142 includes a program memory 202 that stores a position command table. Instead of this configuration, the upper management device is provided with a position command table, and the slitter scorer control device requests and acquires only the position command value related to the previous order when the order is changed. It may be a configuration. In this case, the function in which the slitter scorer control device receives and stores only the necessary position command value from the upper management device when changing the order is an example of the information acquisition unit of the present invention.

(7) In the present embodiment, the position command table provided in the program memory 202 has a configuration in which no pause position command value is stored for the slitter knife and the upper ruled line roll. Instead of this configuration, the position command table stores a rest position command value such as a slitter knife, and when the slitter knife is separated from the cardboard, the vertical position of the lower support block is determined according to the rest position command value. It may be a configuration. For example, regarding the slitter knife 331A, when the movable range in the vertical direction of the lower support block 454 is set larger than the range in which the slitter knife 331A moves in the vertical direction due to the operation and non-operation of the air cylinder 459, the slitter knife 331A The vertical position of the lower support block needs to be determined according to the rest position command value so that the knife is sufficiently separated from the cardboard.

(8) In this embodiment, the tip of the thin disk-shaped knife of the slitter knife 331A enters and engages with a groove formed on the circumferential surface of the knife receiving member 330A. However, the present invention is not limited to a configuration in which the tip of the knife enters and meshes with the groove, and the knife receiving member is connected to the slitter knife and a predetermined amount so that the tip of the slitter knife protrudes from the upper surface of the cardboard by a predetermined amount. Any configuration can be used as long as it can engage with the upper surface of the cardboard in a positional relationship. For example, an annular body made of an abrasion resistant material may be fixed to the circumferential surface of the knife receiving member, and the tip of the knife may enter the annular body. Further, the knife receiving member may be composed of an elastic body such as a brush and urethane rubber, and the slitter knife may have a configuration in which the tip of the slitter knife enters the inside of the brush, or a configuration in which the urethane rubber is pressed and deformed. In this case, the engagement amount between the knife receiving member and the slitter knife is an amount by which the tip of the slitter knife enters the inside from the outer peripheral surface of the knife receiving member.

DESCRIPTION OF SYMBOLS 1 Corrugating machine 30 Slitter scorer 30A 1st unit 30B 2nd unit 31A, 31B, 32A, 32B Scorer 33A 1st slitter 33B 2nd slitter 142 Slitter scorer controller 152 Slitter scorer drive device 310A, 310B, 320A, 320B upper ruled line roll 330A, 330B knife receiving member 331A, 331B slitter knife
408, 409, 454 lower support block
422 , 423, 443 Upper support block 417, 438A, 438B, 448A, 448B Screw jack 416, 437, 447, 464, 467, 468 Induction motor 432, 433, 458, 465, 466, 469 Air cylinder
406 Guide beam
453 Movable guide bodies 421 and 442 Movable guide bodies PL

Images