WO2012102257A1 - コルゲートマシンにおけるトリム処理方法,コルゲートマシン及びエッジカット装置 - Google Patents
コルゲートマシンにおけるトリム処理方法,コルゲートマシン及びエッジカット装置 Download PDFInfo
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- WO2012102257A1 WO2012102257A1 PCT/JP2012/051406 JP2012051406W WO2012102257A1 WO 2012102257 A1 WO2012102257 A1 WO 2012102257A1 JP 2012051406 W JP2012051406 W JP 2012051406W WO 2012102257 A1 WO2012102257 A1 WO 2012102257A1
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- Prior art keywords
- edge
- trim
- edge cut
- order
- knife
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/18—Means for removing cut-out material or waste
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/36—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
- B26D1/245—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter for thin material, e.g. for sheets, strips or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/36—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder
- B26D1/365—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
- B26D1/405—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member for thin material, e.g. for sheets, strips or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B50/146—Cutting, e.g. perforating, punching, slitting or trimming using tools mounted on a drum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B50/20—Cutting sheets or blanks
- B31B50/22—Notching; Trimming edges of flaps
Definitions
- the present invention relates to a method for processing trim when changing the order in a corrugating machine, a corrugating machine, and an edge cutting device for processing trim when changing order in a corrugating machine.
- a corrugated machine that manufactures a corrugated cardboard sheet is provided with a slitter scorer and a cut-off device in this order downstream of a double facer.
- the cardboard sheet is subjected to a predetermined ruled line and slitting groove processing according to the order by a slitter scorer, and then cut into a predetermined length according to the order by a cut-off device to obtain a product sheet. It is like that.
- a downstream side of the cut-off device is equipped with a defective sheet removing device (not shown) that removes defective sheets from the product sheet.
- trims also called ears
- the trim is cut (trimmed) by a slitter knife whose position is adjusted to a position corresponding to the slitter scorer, sent to the trim shooter, and separated from the product sheet conveyance line sent to the cut-off device.
- a slitter scorer As a slitter scorer, two machines, a first slitter scorer (No. 1 unit) and a second slitter scorer (No. 2 unit), can be used without changing the machine line. Are arranged in series, and while one slitter scorer is operating, the other slitter scorer is set according to the next order.
- an edge cutting device 15 for cutting the trim portion 11t of the belt-like double-sided corrugated cardboard sheet 11 in the width direction (also referred to as edge cutting) is provided immediately upstream of both slitter scorers, for example, as shown in FIG.
- edge cutting is operated to cut the trim portion 11t in the width direction (edge cutting) to separate the trim back and forth, and the trim side and product sheet The side is separated.
- a production management signal is sequentially generated in the production management device, and this production management signal is sent to the corrugating machine. Operate. In this example, no. No. 1 from the state where 1 unit 2A is used. This shows a case where the order is changed to a state where 2 units 2B are used.
- the edge cutting signal step S30
- No. 1 is determined.
- 1 unit stop signal step S32
- no. A two-unit operation signal step S34
- a cutter cutting dimension switching signal step S36
- a defect removal signal step S38
- the edge cutting device 5 is operated in accordance with the edge cutting signal to edge-cut the trim part (step S41). Immediately after passing 1 unit 2A, no. 1 No. according to the unit stop signal. One unit 2A is raised (separated from the conveyance line 10) and stopped (step S43). Furthermore, this edge cutting part is No. No. 2 before entering the 2 unit 2B. No. 2 according to the 2 unit operation signal. The 2 unit 2B is lowered (approached to the transfer line 10) and the operation is started (step S45). Then, the rotational speed of the cutoff device 3 is changed according to the product sheet length of the new order according to the cutter cutting dimension switching signal (step S47). Subsequently, since the product sheet corresponding to the place of order change cut by the cut-off device 3 in response to the defect removal signal is a defective sheet, it is removed by the defective sheet removing apparatus (step S49). Thereby, the order change is completed.
- the defective sheet 12B generated at the place of the order change has a planar view shape as shown in FIG.
- arrows in FIG. 9 and FIG. 7 described later indicate the conveyance direction of the belt-like double-sided cardboard sheet 11 including the defective sheet 12B. That is, on the leading side of the sheet, slits 12a by an old order knife (here, No. 1 unit edge slitting knife) set at a trim position corresponding to the old order are processed at both ends of the sheet, and the succeeding sheet On the side, slits 12b are formed at both ends of the sheet by a new order knife (here, No. 2 unit edge slitting knife) set at a trim position according to the new order.
- an old order knife here, No. 1 unit edge slitting knife
- slits 12b are formed at both ends of the sheet by a new order knife (here, No. 2 unit edge slitting knife) set at a trim position according to the new order.
- a scratch 12c remains behind the end of the slit 12a as shown by a broken line in FIG. Further, the slitting knife enters the thick double-sided corrugated cardboard sheet 11 while rotating at the start of slitting. Therefore, a scratch 12d is formed in front of the portion where the slit 12b starts as shown by a broken line in FIG. Remain.
- the configuration of the edge cut device 15 includes an edge cut knife 151 in which a knife 151b protrudes from the outer periphery of a cylinder 151a, and an edge cut knife 151 sandwiching the conveyance line 10 of the double-sided cardboard sheet 11. And an anvil cylinder 152 mounted with an anvil (elastic body) 152b on the outer peripheral surface of the cylinder 152a. Both the edge cut knife 151 and the anvil cylinder 152 are provided over the entire machine width direction.
- the anvil 152b of the anvil cylinder 152 has a portion 152c cut out in a notch shape when viewed from the front, whereby there is a region having the anvil 152b only near both ends of the cylinder 152a, and the knife 151b Both edges of the double-sided cardboard sheet 11 are cut in the width direction only in the region having the anvil 152b. Since the trim width varies depending on the order, the region having the anvil 152b is changed by adjusting the phase of the anvil cylinder 152 as necessary.
- the edge cut knife 151 is stopped at a rotational phase where the knife 151b does not interfere with the double-sided corrugated cardboard sheet 11 on the transport line 10, and is kept waiting. While matching the timing of the operation of the slitter knife of the scorer, the knife 151b enters the lap portion of the old and new slits 12a and 12b and rotates so as to perform edge cutting. Therefore, the edge cut knife 151 starts from the standby position, accelerates to a peripheral speed equal to the conveyance speed of the double-sided corrugated cardboard sheet 11 on the conveyance line 10 in about half rotation, and decelerates in about half rotation after cutting the trim. Stop at the standby position.
- the corrugated machine possible to shorten the length L 1 of the defective sheet generated during the order sort is required.
- the defective sheet length L 1 is determined by the lap length a 1 by the new and old knives, the flawed length b by each knife, and the front and rear margins ⁇ . if the value small, can shorten the length L 1, for this purpose, it becomes necessary to improve the accuracy and speed of the switching operation of the slitter scorer and edge cutting device for a corrugating machine, a limit to this There are, there is a limit in shortening the length L 1 of the defective sheet.
- the present invention was devised in view of such a problem, and a trim processing method in a corrugating machine and a corrugating machine capable of greatly suppressing the length of a defective sheet that occurs when changing the order in the corrugating machine. And it aims at providing an edge cut device.
- the trim processing method in the corrugating machine includes an edge for changing the trim width of the corrugated cardboard sheet at the time of changing the order in the corrugating machine and cutting the trim back and forth using an edge cutting device.
- a trim processing method for cutting, a first edge cutting step for edge-cutting the old-order trim, and a second edge-cutting step for edge-cutting the new-order trim behind the edge-cut portion of the old-order trim is characterized by having.
- a flaw is formed in a region between the first edge cut portion formed in the first edge cut step and the second edge cut portion formed in the second edge cut step. It is preferable.
- the edge cutting device includes a cylinder having an axis line arranged in the width direction of the corrugating machine, and an edge cutting knife protruding from the outer periphery of the cylinder.
- the edge cutting knife is The cylinder is stopped at a rotation phase that does not interfere with the corrugated sheet conveyance line, and when the order is changed, the cylinder is rotated approximately twice, and the first edge cutting step is performed for the first rotation, and the second rotation Preferably, the second edge cutting step is performed.
- the cylinder in a stopped state is accelerated to an edge cutting speed corresponding to the conveyance speed of the corrugated sheet during approximately half rotation, and the old order It is preferable that an edge cut of the trim and the trim of the new order are performed as an edge cut, and then the cylinder is stopped during approximately a half rotation. In this case, it is preferable to adjust the edge cut speed in accordance with the conveyance speed of the corrugated cardboard sheet.
- the conveyance speed of the cardboard sheet is variable, and the edge cut speed is set in accordance with the maximum conveyance speed of the cardboard sheet.
- a defective sheet generated between the product sheet of the old order and the product sheet of the new order at the time of the order change, the slit of the trim of the old order formed on both sides of the front end of the sheet, and the old order A first knife scratch formed continuously at each rear end portion of the slit, and a trim of the new order formed on both sides of the rear end portion of the sheet behind the slit of the old order.
- a slit and a second knife scratch formed continuously at each front end portion of the slit of the new order, and a first edge cut portion formed in the first edge cut step is the old edge cut
- the second edge cut portion formed in the second edge cut step intersects the slit of the new order at a position intersecting the slit of the order. It is preferable that the position.
- the corrugating machine includes an edge cutting device for cutting a cardboard seat trim back and forth downstream of a double facer, a first slitter scorer and a second slitter scorer having a slitting knife for slitting the trim, an edge A cut-off device that cuts the corrugated cardboard sheet back and forth when changing the order in a corrugating machine that performs cutting, in order, the edge cut device, the first slitter scorer, the second slitter scorer, and the cut-off device
- a corrugating machine provided with a control means for controlling operation, wherein the control means stops one slitter scorer that is used among the first slitter scorer and the second slitter scorer at the time of changing the order.
- a second edge cutting process is performed in which the trim of the new order is edge-cut behind the cut portion.
- a knife flaw region is formed in a region between a first edge cut portion formed in the first edge cut step and a second edge cut portion formed in the second edge cut step. It is preferred that
- the edge cut device includes a cylinder having an axis line disposed in the width direction of the corrugating machine, and an edge cut knife projecting on the outer periphery of the cylinder, and the control means is configured to perform normal operation of the corrugating machine.
- the cylinder is stopped at a rotation phase at which the edge cut knife does not interfere with the corrugated sheet conveyance line, and when the order is changed, the cylinder is rotated approximately twice, and the first edge cut processing is performed at the first rotation.
- the control unit accelerates the cylinder in a stopped state to an edge cut speed corresponding to the conveyance speed of the corrugated cardboard sheet during a substantially half rotation.
- the old-order trim edge cut and the new-order trim edge cut are performed, and then the cylinder is stopped during approximately a half rotation.
- control means adjusts the edge cut speed in accordance with the conveyance speed of the cardboard sheet.
- control means is configured such that the conveyance speed of the corrugated cardboard sheet is variable and the edge cut speed is set in accordance with the maximum conveyance speed of the corrugated cardboard sheet.
- Defective sheets formed between the product sheet of the old order and the product sheet of the new order when the control unit changes the order are the slits of the trim of the old order formed on both sides of the front end of the sheet, and the old sheet
- a slit and a second knife scratch formed continuously at each front end portion of the slit of the new order, and a first edge cut portion formed by the first edge cut processing is the old edge cut At a position where the second edge cut process formed by the second edge cut processing intersects the slit of the new order, It is preferred to be located.
- the edge cutting device of the present invention is an edge cutting device that performs edge cutting for cutting back and forth trims formed at both ends of the cardboard sheet at the time of changing the order in the slitter scorer.
- the first and second edge cut knives are arranged so as to correspond to each other and arranged coaxially, and are provided to face the first and second edge cut knives across the cardboard sheet conveyance line.
- the first and second edge cuts extending in the apparatus width direction and supporting the first and second supports from the back side And backup beam IF receives the reaction force at the time of cutting the trim
- the first and second supports are characterized by having a width direction drive mechanism that drives the device width direction.
- the width direction driving mechanism includes first and second ball screws that are rotatably supported by the backup beam and extend in the apparatus width direction, and the first ball screw is penetrated through the first support body.
- a screw hole that is screwed in, a screw hole that is drilled in the second support and through which the second ball screw passes, and a drive source that rotationally drives the first and second ball screws. Can be configured.
- the rotation drive mechanism includes a first axis that is a rotation axis of the first edge-cut knife supported on the backup beam and the first support, and a backup beam and the second support.
- a second axis that is a rotation axis of the second edge-cut knife that is pivotally supported, and a drive source that rotationally drives the first and second axes can be configured.
- the anvil cylinder is composed of first and second anvil cylinders that are divided and arranged coaxially so as to correspond to the travel positions of both ends of the corrugated cardboard sheet, and the first and second anvil cylinders are Both can be configured to be supported by a second backup beam extending in the apparatus width direction.
- the defective sheet shape of the present invention is a defective sheet shape formed by the trim processing method in a corrugating machine according to any one of claims 1 to 7, wherein the old order trim in the corrugated cardboard sheet is formed.
- a first knife scratch formed on the rear end portion of the cardboard sheet and a second knife scratch formed on the front end portion of the cardboard sheet where the new order trim is formed is formed in the first edge cutting step. It is characterized in that it is formed in a region between the first edge cut portion to be formed and the second edge cut portion formed in the second edge cut step.
- the trim processing for changing the trim width of the corrugated cardboard sheet at the time of changing the order in the corrugating machine and performing edge cutting for separating the trim back and forth using the edge cutting device In this case, the trim of the old order is edge cut, the trim of the new order is edge cut behind the edge cut portion of the old order trim, and the edge cut is performed at two places before and after, for example, the place where the old order trim is formed. Forming a first knife flaw formed at the rear end and a second knife flaw formed at the front end of the place where the new order trim is formed in a region between the two edge cut points; Can do.
- the defective sheet generated at the time of changing the order is set to the length of the section from immediately before the front edge cut location to immediately after the rear edge cut location, that is, the length of the first knife scratch or the second knife scratch.
- the length of the defective sheet generated when the order is changed is set to the length of the section from immediately before the front edge cut location to immediately after the rear edge cut location, that is, the length of the first knife scratch or the second knife scratch.
- the first and second edge cut knives are divided and arranged coaxially so as to correspond to the travel positions of both ends of the corrugated cardboard sheet.
- Each of the first and second edge cut knives cuts the trim, and the reaction force is received by the backup beam through the support. Therefore, in addition to shortening the axial length of the edge cut knife, the edge cut knife does not need to be rigid enough to counter the reaction force during trim cutting. can do.
- the edge cut knife can be rotated twice to reduce the interval between the cut portions when the trim portion of the corrugated cardboard sheet is cut at two front and rear positions, and the trim processing method or corrugated machine in the corrugating machine of the present invention can be reduced. If applied, it is possible to further suppress the length of the defective sheet that occurs when the order is changed.
- FIG. 1 to 6 illustrate a corrugating machine according to an embodiment of the present invention and processing related to the order change, and will be described based on these.
- FIG. 2 is a side view showing the main part of the downstream part (dry end) of the corrugating machine according to the present embodiment.
- the corrugating machine has an edge cutting device 5, a first slitter scorer (No. 1 unit) 2A, a second slitter scorer (No. 2 unit) 2B, and a cut downstream of the double facer 1.
- the off device 3 is provided in this order. Further, a defective sheet removing device and a stacker (not shown) are provided downstream of the cutoff device 3 in this order.
- Two slitter scorers 2 (indicated by reference numeral 2 when the first and second slitter scorers are not distinguished) are arranged in series, and the machine line is stopped, the first slitter scorer 2A and the second slitter scorer 2B. It is now possible to respond to order changes. That is, while one slitter scorer is operating, the other slitter scorer is set according to the next order.
- each slitter scorer 2 has a slitter knife (slitter) 21 and a ruled line on one side (here, the lower side) across a conveying line 10 on which a belt-like double-sided cardboard sheet 11 is conveyed.
- Insert rolls (scorers) 22 and 24 are provided, and an opposing roll 23 facing the slitter knife 21 is provided on the other side (here, upward) of the transport line 10.
- a trim shooter 4 for processing a trim slitted by the slitter knife 21 is attached. Note that the arrows in FIG. 3 indicate the direction in which the belt-like double-sided cardboard sheet 11 is conveyed.
- the slitter knife 21 is lifted so that the upper end reaches a position penetrating the double-faced corrugated cardboard sheet 11 traveling on the transport line 10 and the opposing roll 23 is lowered to the transport line 10 so that the slitter knife 21 is in an operating state.
- the slitting groove processing by 21 can be performed.
- the crease roll 22 the crease portion (not shown) is slightly increased to a position where the crease portion (not shown) enters the lower surface of the double-sided corrugated cardboard sheet 11 that travels on the conveyance line 10, and the crease roll 24 is moved to the conveyance line 10.
- the crease roll 24 is moved to the conveyance line 10.
- the slitter knife 21 is lowered to a position where it does not interfere with the transport line 10, and the opposing roll 23 is raised to a position where it does not interfere with the transport line 10, and the ruler roll 22 is moved to a position where it does not interfere with the transport line 10.
- the slitter knife 21, the ruler roll 22 and the like are inactive.
- the preparation for the next order in the slitter scorer 2 is to set the slitter knife 21 and its opposing roll 23 and the ruler rolls 22 and 24 at processing positions according to the next order.
- the cut-off device 3 is equipped with a double-edged type equipped with knife cylinders 31U and 31L on both the upper and lower sides in this embodiment.
- Each of the knife cylinders 31U and 31L is configured by projecting a spiral knife 33 whose phase is shifted on the outer periphery of the cylinder 32 in the axial direction. While the knife cylinders 31U and 31L are rotated at a timing according to the order, the belt-like double-sided corrugated cardboard sheet 11 is separated into a predetermined length to obtain a product sheet 12.
- the product sheet 12 is illustrated as being removed from the conveyance line 10 in order to show the conveyance line 10, but the product sheet 12 is also conveyed on the conveyance line 10.
- the cut-off device 3 may be of a single-blade type in which a knife cylinder is provided on one of the upper and lower sides (for example, the upper side) and an anvil cylinder is provided on the other side (for example, the lower side).
- the defective sheet removal device downstream of the cutoff device 3 identifies a defective sheet in the product sheet 12 based on the processing information and product inspection information checked on the upstream side, and an appropriate product sheet for this defective sheet. Separated from the 12 transport lines 10. Therefore, only proper product sheets 12 are stacked on the stacker downstream of the defective sheet removing apparatus.
- trims also referred to as ears
- the trim 11t is cut (trimmed) by a slitter knife 21 whose position is adjusted to a position corresponding to the slitter scorer 2, and is sent to the trim shooter 4 and separated from the conveyance line 10 of the product sheet sent to the cut-off device 3. Is done.
- an edge cutting device 5 for cutting the trim portion in the width direction (also referred to as edge cutting) is provided immediately upstream of the slitter scorers 2A and 2B.
- edge cutting device 5 is actuated to cut the trim portion in the width direction (edge cutting) to separate the trim from the front and back, thereby separating the trim side from the product sheet side.
- the edge cutting device 5 will be described. As shown in FIGS. 4 and 5, the edge cutting device 5 has an edge cutting knife directed toward the conveying direction of the conveying line 10 of the belt-like double-sided corrugated cardboard sheet 11.
- the first edge cut knife 51R arranged to correspond to the travel position of the right end and the second edge cut knife 51L arranged to correspond to the travel position of the left end. It is divided into two.
- Each edge cut knife 51 (indicated by reference numeral 51 when the first and second edge cut knives are not distinguished from each other) is provided with a spiral knife 51b that is shifted in phase in the axial direction on the outer periphery of the cylinder 51a.
- a rotary knife is provided.
- each rotating shaft 51c is composed of a small diameter portion at both ends and a central large diameter portion 51d, and the cylinder 51a is serrated to the central large diameter portion 51d.
- each rotary shaft 51c is rotatably supported by brackets 53a to 53d fixed to a first beam (first backup beam) 53 extending in the width direction of the machine so as to be rotatable at both ends.
- the first beam 53 is provided above the edge cut knife 51 with both ends supported by frames F, F standing on the left and right sides of the machine.
- a moving head (support body) 52 that is coupled to and supports the edge cut knife 51 is interposed.
- Bearing projections 52a and 52b project downward from both ends of each moving head 52 in the apparatus width direction.
- These bearing projections 52a and 52b are hollow formed at both ends of the cylinder 51a.
- the shaft portion 51e is engaged so as to be rotatable and integrally move in the axial direction.
- a female screw hole 52c through which the ball screw 54 passes and is screwed is machined in the base of the bearing protrusions 52a and 52b of each moving head 52.
- the ball screw 54 is rotatably supported by brackets 53a to 53d fixed to the first beam 53. Therefore, when the ball screw 54 rotates, each moving head 52 moves in the width direction of the machine together with each edge cut knife 51.
- a back-up plate 55 is joined to the back surface (upper surface) of each moving head 52, and this back-up plate 55 is in contact with a sliding contact plate 55a provided on the lower surface of the first beam 53 so as to be relatively movable.
- the rigidity and strength required for the cylinder 51a and the rotating shaft 51c only have to be opposed to its own weight, etc.
- the rigidity and strength to be set can be greatly reduced.
- the edge cut knife 51 is divided, and the respective rotation shafts 51c are pivotally supported by the brackets 53a to 53d and the bearing projections 52a and 52b respectively on the left and right sides. The rigidity and strength required for the cylinder 51a and its rotating shaft 51c are reduced.
- an anvil cylinder 57 is provided facing the edge cut knife 51 with the conveyance line 10 of the double-sided cardboard sheet 11 in between.
- the anvil cylinder 57 is provided with an anvil (elastic body) on the outer peripheral surface of the cylinder, and the anvil cylinder 57 supports the double-sided cardboard sheet 11 from above when the edge cut knife 51 cuts the trim from below. Does not escape upwards.
- the first and second anvil cylinders are composed of first and second anvil cylinders that are divided and arranged coaxially so as to correspond to the travel positions of both ends of the cardboard sheet 11.
- 57 is supported by brackets 58a to 58d fixed to a second beam (second backup beam) 58 extending in the apparatus width direction so that the shaft portions at both ends are rotatable.
- the second beam 58 is also provided below the anvil cylinder 57 with both ends supported by frames F, F standing on the left and right sides of the machine.
- both anvil cylinders 57 do not move in the axial direction, but only follow and rotate according to the movement of the cardboard sheet 11. Therefore, the axial lengths of the outer peripheral surfaces of both anvil cylinders 57 are set to a size that can cover the axial movement range of the edge cut knife 51.
- each edge cut knife 51 is coaxially connected by a connecting shaft 56a
- the ball screw 54 screwed to each moving head 52 is connected by a connecting shaft 56b
- the rotating shaft of each anvil cylinder 57 is coaxially connected by a connecting shaft 56c.
- the rotation shaft 51c and the ball screw 54 are connected to each other and are driven to rotate through driving sources M1 and M2 connected to the driving side end.
- the ball screw 54 rotates, the moving heads 52 approach or separate from each other.
- the width of the trim on both sides is also changed, and the position of the edge cut by each edge cut knife 51 is also changed.
- the position of the edge cut does not need to be strictly adjusted, but at least the trim must be able to be cut all along its width. Therefore, the ball screw 54 is rotationally driven in accordance with the trim width and position, and the edge cut knives 51 are moved together with the movable heads 52 to adjust the position so that the trim can be completely cut in the width direction.
- the edge cut knife 51 is stopped at a rotational phase where the knife 51b does not interfere with the double-faced corrugated cardboard sheet 11 on the transport line 10 and is kept waiting.
- 151 is activated from the standby position and accelerated to a peripheral speed (cutting speed) equal to the conveying speed of the double-sided corrugated cardboard sheet 11 on the conveying line 10 after about half rotation, and after trim cutting is completed (here, the first time After both the cutting and the second cutting performed after one rotation are completed), the cutting speed is decelerated from about a half rotation and stops at the standby position.
- the production management apparatus 100 sequentially generates production management signals as shown in FIG. 6, for example, and this production management signal is sent to the corrugating machine, and each part of the corrugating machine operates. (Machine operation). In this example, no. No. 1 from the state where 1 unit 2A is used. This shows a case where the order is changed to a state where 2 units 2B are used. That is, in the production management apparatus 100, when the start of order change is determined, the first edge cutting signal (step S10), the second edge cutting signal (step S12), 1 unit stop signal (step S14), No. A two-unit operation signal (step S16), a cutter cutting dimension switching signal (step S18), and a defect removal signal (step S20) are generated and sequentially sent to the corrugating machine.
- the edge cutting device 5 in response to these production management signals, first, the edge cutting device 5 is operated in response to the edge cutting signal, and the first edge cutting (step S21, first edge cutting process) is performed on the trim portion.
- the second edge cutting (step S23, second edge cutting step) is performed, and the edge cutting portion (first edge cutting portion) by the first edge cutting is No.
- One unit 2A is raised (separated from the conveyance line 10) and stopped (step S25). Further, the edge cutting portion (second edge cutting portion) by the second edge cutting is No.2. No. 2 before entering the 2 unit 2B. No. 2 according to the 2 unit operation signal.
- the 2 unit 2B is lowered (approached to the transport line 10) and the operation is started (step S27). Then, the rotation speed of the cutoff device 3 is changed according to the product sheet length of the new order according to the cutter cutting dimension switching signal (step S29), and the cut-off device 3 is cut according to the defect removal signal. Since the product sheet corresponding to the place of order change is a defective sheet, it is removed by the defective sheet removing device (step S31). Thereby, the order change is completed.
- the defective sheet 12A generated at the place of order change has a planar view shape as shown in FIG. That is, on the leading side of the sheet, slits 12a by an old order knife (here, No. 1 unit edge slitting knife) set at a trim position corresponding to the old order are processed at both ends of the sheet, and the succeeding sheet On the side, slits 12b are formed at both ends of the sheet by a new order knife (here, No. 2 unit edge slitting knife) set at a trim position according to the new order.
- the arrow in FIG. 1 shows the conveyance direction of the strip
- the slitting knife rotates away from the thick double-sided cardboard sheet 11 at the end of slitting, the slitting knife is behind the portion where the slit 12a ends (the rear end portion where the old order trim is formed). As shown by a broken line in FIG. 1, a scratch (first knife scratch) 12c remains. Further, since the slitting knife rotates and enters the thick double-sided cardboard sheet 11 at the start of slitting, the slitting knife is in front of the portion where the slit 12b starts (the front end portion where the new order trim is formed). As shown by a broken line in FIG. 1, a scratch (second knife scratch) 12d remains.
- the first edge cutting by the edge cutting device 5 (the edge cutting part is the first edge cutting part 12f) and the second second edge cutting (the edge cutting part is the second edge cutting part 12g), Therefore, as shown in FIG. 1, the old order knife is detached from the conveying line 10 and the new order knife so that the wound 12c by the old order knife and the wound 12d by the new order knife are almost completely wrapped.
- the first edge cutting 12f and the second edge cutting 12g are arranged at a position sandwiching the region where these flaws 12c and 12d are formed in synchronism with the entry into the transport line 10
- the edge cutting knife 51 of the edge cutting device 5 is controlled.
- the defective sheet length L 2 the length of the two edges cut 12f, 12 g (edge to edge length) and a 2, is determined from the respective margin ⁇ before and after, is represented by the following formula (1)
- the L 2 a 2 + 2 ⁇ (1)
- the inter-edge length a 2 is determined from the length b of the flaws 12c and 21d and the margins ⁇ before and after, and is expressed by the following equation (2).
- a 2 b + 2 ⁇ (2) Since the margin 2 ⁇ is considered to be about the margin (wrap length) a 1 of the slits 12a and 12b in FIG. 9, the defective sheet length L 2 is expressed by the following equation (3) from this relationship.
- L 2 a 2 + a 1 (3)
- defective sheet length L 2 compares conventional defective sheet length L 1, scratches 12c, it is possible to shorten a length of about b of 12d.
- the defective sheet length in operation at a line speed of 300 m / min can be changed from 700 mm to 700 to 750 mm, and the loss rate can be reduced by about 20%.
- the trim width of the corrugated cardboard sheet 11 is changed at the time of changing the order, and the trim of the old order is edge-cut using the edge cutting device 5.
- the trim behind the new order old Odatorimu the edge cut points and edge cut, to the edge cut at the front and rear two positions it is possible to greatly reduce the defective sheet length L 2, more paper resources, etc. It can be used effectively.
- the defective sheet shortening of length L 2 it is necessary to sufficiently reduce the distance of the edge cut by two front and rear positions, or to do this, increase the rotation of the edge cutting knife 51, the edge cut knife 51 It is necessary to reduce the outer diameter of the edge cut knife 51 to suppress the peripheral length of one rotation of the edge cut knife 51.
- the edge cut knife 51 is accelerated from the stop state to the cutting speed in a half turn and stopped from the cutting speed in a half turn. It must be, not easy. Further, as in the background art shown in FIG.
- the cylinder 51 a of the edge cut knife 51 extends over the entire width of the apparatus, and in the case of facing the cutting reaction force with its own rigidity and strength, And from the viewpoint of ensuring strength, it is difficult to reduce the outer diameter of the edge cut knife 51.
- the first and second edge cut knives 51R, 51L are divided and arranged so as to correspond to the travel positions of both ends of the cardboard sheet 11, and each edge
- the cut knives 51R and 51L are respectively coupled to a moving head 52 supported from the back by a backup beam 53, and the reaction force when the first and second edge cut knives 51R and 51L cut the trim 11t is: It is received by the backup beam 53 via the moving head 52.
- the edge cut knives 51R and 51L do not need to have sufficient rigidity to face the reaction force during trim cutting. For this reason, the diameters of the edge cut knives 51R and 51L can be reduced. Accordingly, when the edge cut knife is rotated twice to cut the trim portion of the corrugated cardboard sheet 11 at two front and rear positions, the interval between the cut portions can be reduced. it is possible to reduce the length L 2 of the defective sheet generated during changing more.
- the shape of the defective sheet shown in FIG. 1 is merely an example, and is not limited thereto. That is, even if the flaws 12c and 12d are not completely wrapped, they need only be wrapped to some extent. In other words, even if the scratch 12c by the old order knife and the scratch 12d by the new order knife do not wrap substantially completely, the scratch 12c by the old order knife and the scratch 12d by the new order knife are caused by the first edge cutting.
- the bad sheet length L 2 It can be reduced more than before.
- 4 and 5 may be applied to the corrugating machine other than the corrugating machine and the trim processing method in the corrugating machine according to the present invention.
- the present invention can be widely applied to corrugating machines for manufacturing corrugated cardboard sheets.
- the order is changed without stopping the corrugated machine line. It is effective in the case.
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Abstract
Description
つまり、生産管理装置では、このオーダ替えの開始が判断されると、エッジ切断信号(ステップS30),No.1ユニット停止信号(ステップS32),No.2ユニット運転信号(ステップS34),カッタ切断寸法切替信号(ステップS36),不良除去信号(ステップS38)がそれぞれ生成されコルゲートマシンに順次送られる。
L1=a1+2b+2α
図9を参照して説明したように、不良シート長さL1は新旧ナイフによるラップ長さa1と、各ナイフによる傷入り長さbと、前後の各余裕代αとから決まるため、これらの値を小さくできれば、長さL1を短くできるが、このためには、コルゲートマシンのスリッタスコアラやエッジカット装置の切替動作の精度や速度を向上することが必要になるが、これには限度があり、不良シートの長さL1を短くするにも限度がある。
この場合、前記エッジカット速度を、前記段ボールシートの搬送速度に合わせて調整することが好ましい。
前記オーダ替え時に、前記旧オーダの製品シートと前記新オーダの製品シートとの間に発生する不良シートが、シート前端部の両側にそれぞれ形成された前記旧オーダのトリムのスリットと、前記旧オーダの前記スリットの各後端部に連続して形成される第1のナイフ傷と、前記旧オーダの前記スリットよりも後方の前記シート後端部の両側にそれぞれ形成された前記新オーダのトリムのスリットと、前記新オーダの前記スリットの各前端部に連続して形成される第2のナイフ傷とを備えると共に、前記第1のエッジカット工程で形成される第1のエッジカット箇所が前記旧オーダの前記スリットに交差する位置に、前記第2のエッジカット工程で形成される第2のエッジカット箇所が前記新オーダの前記スリットに交差する位置に、それぞれ位置していることが好ましい。
あるいは、前記制御手段は、前記段ボールシートの搬送速度は可変であって、前記エッジカット速度を、前記段ボールシートの最高搬送速度に合わせて設定することが好ましい。
前記アンビルシリンダは、前記段ボールシートの両端部の走行位置に対応するように分割して同軸状に配置された第1及び第2のアンビルシリンダから構成され、前記第1及び第2のアンビルシリンダはいずれも前記装置幅方向に延在する第2のバックアップビームに支持されている構成とすることができる。
11 帯状の両面段ボールシート
10 搬送ライン
12 製品シート
12A 不良シート
12a,12b スリット
12c,12d 傷
2A 第1スリッタスコアラ(No.1ユニット)
2B 第2スリッタスコアラ(No.2ユニット)
21 スリッタナイフ(スリッタ)
22 罫入れロール(スコアラ)
23,24 対向ロール
3 カットオフ装置
31U,31L ナイフシリンダ
32 シリンダ
33 ナイフ
4 トリムシュータ
5 エッジカット装置
51R 第1のエッジカットナイフ
51L 第2のエッジカットナイフ
51a シリンダ
51b ナイフ
51c 回転軸
51d 回転軸51cの大径部
52 移動ヘッド(支持体)
51e 中空軸部
52a,52b 軸受用突起部
53 第1ビーム(第1のバックアップビーム)
53a~53d ブラケット
54 ボールネジ
55 バックアッププレート
55a 摺接プレート
56a~56c 連結軸
57 アンビルシリンダ
58 第2ビーム(第2のバックアップビーム)
58a~538 ブラケット
100 生産管理装置(制御手段)
F フレーム
M1,M2 駆動源
L2 不良シート長さ
a2 エッジ間長さ
b 傷12c,12dの長さ
α,β 余裕代
図1~図6は本発明の一実施形態にかかるコルゲートマシン及びそのオーダ替え時に関連する処理について説明するもので、これらに基づいて説明する。
まず、本実施形態に係るコルゲートマシンの要部構成を説明する。
このような各ボールネジ54の回転駆動や各エッジカットナイフ51の回転駆動は、オーダ替えの際に、生産管理装置(制御手段)100によって各スリッタスコアラ2やカットオフ装置3と共に制御される。
すなわち、生産管理装置100では、オーダ替えの開始が判断されると、第1回エッジ切断信号(ステップS10),第2回エッジ切断信号(ステップS12),No.1ユニット停止信号(ステップS14),No.2ユニット運転信号(ステップS16),カッタ切断寸法切替信号(ステップS18),不良除去信号(ステップS20)がそれぞれ生成されコルゲートマシンに順次送られる。
このようなオーダ替えの処理によれば、オーダ替えの個所に発生する不良シート12Aは、図1に示すような平面視形状になる。つまり、シートの先行側には、旧オーダに応じたトリム位置に設定された旧オーダナイフ(ここでは、No.1ユニットのエッジスリッティングナイフ)によるスリット12aがシート両端に加工され、シートの後続側には、新オーダに応じたトリム位置に設定された新オーダナイフ(ここでは、No.2ユニットのエッジスリッティングナイフ)によるスリット12bがシート両端に加工される。なお、図1における矢印は、不良シート12Aが含まれる帯状の両面段ボールシート11の搬送方向を示す。
L2=a2+2α ・・・(1)
a2=b+2β ・・・(2)
余裕代2βは、図9におけるスリット12a,12bの余裕(ラップ長さ)a1程度と考えられるので、この関係から不良シート長さL2は次式(3)で表される。
L2=a2+a1・・・(3)
L2=L1-b ・・・(4)
したがって、不良シート長さL2は従来の不良シート長さL1と比較して、傷12c,12dの長さb程度短くすることができる。
以上、本発明の実施形態について説明したが、本発明は上述の実施形態に限定されない。
例えば、上記の実施形態では、図4,図5に示す特有のエッジカット装置5を用いているが、図7に示す背景技術のようなエッジカット装置15により、前後2箇所でエッジカットの距離を十分に短くすることができれば、本発明にかかるコルゲートマシンにおけるトリム処理方法及びコルゲートマシンを、このようなエッジカット装置15を用いて行なってもよい。
つまり、旧オーダナイフによる傷12cと、新オーダナイフによる傷12dとが略完全にラップしなくても、旧オーダナイフによる傷12cと、新オーダナイフによる傷12dとが、第1回エッジ切断による第1のエッジカット個所12fとその後の第2回エッジ切断による第2のエッジカット個所12gとの間の領域内に形成されるように不良シート形状を構成すれば、不良シート長さL2を従来よりも削減することができる。
また、図4,図5に示す特有のエッジカット装置5は、本発明にかかるコルゲートマシンにおけるトリム処理方法及びコルゲートマシン以外のコルゲートマシンに適用してもよい。
Claims (17)
- コルゲートマシンにおけるオーダ替え時に、段ボールシートのトリム幅を変更すると共に、エッジカット装置を用いて前記トリムを前後に切り離すエッジカットを行なうトリム処理方法であって、
旧オーダのトリムをエッジカットする第1のエッジカット工程と、
前記旧オーダトリムのエッジカット個所の後方で新オーダのトリムをエッジカットする第2のエッジカット工程と、を有する
ことを特徴とする、コルゲートマシンにおけるトリム処理方法。 - 前記段ボールシートにおける前記旧オーダトリムが形成される個所の後端部に形成される第1のナイフ傷と、前記段ボールシートにおける前記新オーダトリムが形成される個所の前端部に形成される第2のナイフ傷とが、前記第1のエッジカット工程で形成される第1のエッジカット個所と、前記第2のエッジカット工程で形成される第2のエッジカット個所との間の領域内に形成される
ことを特徴とする、請求項1記載のコルゲートマシンにおけるトリム処理方法。 - 前記エッジカット装置は、前記コルゲートマシンの幅方向に軸線を配置されたシリンダと、前記シリンダの外周に突設されたエッジカットナイフとを備え、
前記コルゲートマシンの通常運転時には、前記エッジカットナイフが前記段ボールシートの搬送ラインと干渉しない回転位相で前記シリンダを停止させ、
前記オーダ替え時には、前記シリンダを略2回転させて、1回転目に前記第1のエッジカット工程を実施し、2回転目に前記第2のエッジカット工程を実施する
ことを特徴とする、請求項1又は2記載のコルゲートマシンにおけるトリム処理方法。 - 前記第1のエッジカット工程及び前記第2のエッジカット工程では、停止状態の前記シリンダを略半回転の間に前記段ボールシートの搬送速度に対応するエッジカット速度まで加速して、前記旧オーダのトリムのエッジカットと前記新オーダのトリムをエッジカットとを実施して、その後、前記シリンダを略半回転の間に停止させる
ことを特徴とする、請求項3記載のコルゲートマシンにおけるトリム処理方法。 - 前記エッジカット速度を、前記段ボールシートの搬送速度に合わせて調整する
ことを特徴とする、請求項4記載のコルゲートマシンにおけるトリム処理方法。 - 前記段ボールシートの搬送速度は可変であって、前記エッジカット速度を、前記段ボールシートの最高搬送速度に合わせて設定する
ことを特徴とする、請求項5記載のコルゲートマシンにおけるトリム処理方法。 - 前記オーダ替え時に、前記旧オーダの製品シートと前記新オーダの製品シートとの間に発生する不良シートが、シート前端部の両側にそれぞれ形成された前記旧オーダのトリムのスリットと、前記旧オーダの前記スリットの各後端部に連続して形成される第1のナイフ傷と、前記旧オーダの前記スリットよりも後方の前記シート後端部の両側にそれぞれ形成された前記新オーダのトリムのスリットと、前記新オーダの前記スリットの各前端部に連続して形成される第2のナイフ傷とを備えると共に、前記第1のエッジカット工程で形成される第1のエッジカット箇所が前記旧オーダの前記スリットに交差する位置に、前記第2のエッジカット工程で形成される第2のエッジカット箇所が前記新オーダの前記スリットに交差する位置に、それぞれ位置している
ことを特徴とする、請求項1~6の何れか1項に記載のコルゲートマシンにおけるトリム処理方法。 - ダブルフェーサの下流に、段ボールシートのトリムを前後に切り離すエッジカット装置と、前記トリムをスリッティングするスリッティングナイフを有する第1のスリッタスコアラ及び第2のスリッタスコアラと、エッジカットを行なうコルゲートマシンにおけるオーダ替え時に、前記段ボールシートを前後に切り離すカットオフ装置とを、順に備え、前記エッジカット装置,前記第1のスリッタスコアラ,前記第2のスリッタスコアラ及び前記カットオフ装置の作動を制御する制御手段を備えたコルゲートマシンであって、
前記制御手段は、オーダ替え時に、
前記第1のスリッタスコアラ及び前記第2のスリッタスコアラのうち使用していた一方のスリッタスコアラを停止処置しつつ停止していた準備済みの他方のスリッタスコアラを運転開始処置して前記段ボールシートのトリム幅を変更すると共に、
前記エッジカット装置を作動させて旧オーダのトリムをエッジカットする第1のエッジカット処理と、前記旧オーダトリムのエッジカット個所の後方で新オーダのトリムをエッジカットする第2のエッジカット処理とを行なう
ことを特徴とする、コルゲートマシン。 - 前記段ボールシートにおける前記旧オーダトリムが形成される個所の後端部に形成される第1のナイフ傷領域と、前記段ボールシートにおける前記新オーダトリムが形成される個所の前端部に形成される第2のナイフ傷領域とが、前記第1のエッジカット工程で形成される第1のエッジカット個所と、前記第2のエッジカット工程で形成される第2のエッジカット個所との間の領域内に形成される
ことを特徴とする、請求項8記載のコルゲートマシン。 - 前記エッジカット装置は、前記コルゲートマシンの幅方向に軸線を配置されたシリンダと、前記シリンダの外周に突設されたエッジカットナイフとを備え、
前記制御手段は、前記コルゲートマシンの通常運転時には、前記エッジカットナイフが前記段ボールシートの搬送ラインと干渉しない回転位相で前記シリンダを停止させ、前記オーダ替え時には、前記シリンダを略2回転させて、1回転目に前記第1のエッジカット処理を実施し、2回転目に前記第2のエッジカット処理を実施する
ことを特徴とする、請求項8又は9記載のコルゲートマシン。 - 前記制御手段は、前記第1のエッジカット処理及び前記第2のエッジカット処理では、停止状態の前記シリンダを略半回転の間に前記段ボールシートの搬送速度に対応するエッジカット速度まで加速して、前記旧オーダのトリムのエッジカットと、前記新オーダのトリムをエッジカットとを実施して、その後、前記シリンダを略半回転の間に停止させる
ことを特徴とする、請求項10記載のコルゲートマシン。 - 前記制御手段は、前記エッジカット速度を、前記段ボールシートの搬送速度に合わせて調整する
ことを特徴とする、請求項11記載のコルゲートマシン。 - 前記段ボールシートの搬送速度は可変であって、前記制御手段は、前記エッジカット速度を、前記段ボールシートの最高搬送速度に合わせて設定する
ことを特徴とする、請求項11記載のコルゲートマシン。 - 前記オーダ替え時に、旧オーダの製品シートと新オーダの製品シートとの間に形成する不良シートは、シート前端部の両側にそれぞれ形成された前記旧オーダのトリムのスリットと、前記旧オーダの前記スリットの各後端部に連続して形成される第1のナイフ傷と、前記旧オーダの前記スリットよりも後方のシート後端部の両側にそれぞれ形成された前記新オーダのトリムのスリットと、前記新オーダの前記スリットの各前端部に連続して形成される第2のナイフ傷とを備えると共に、前記第1のエッジカット処理で形成される第1のエッジカット箇所が前記旧オーダの前記スリットに交差する位置に、前記第2のエッジカット処理で形成される第2のエッジカット箇所が前記新オーダの前記スリットに交差する位置に、それぞれ位置している
ことを特徴とする、請求項8~13の何れか1項に記載のコルゲートマシン。 - スリッタスコアラにおけるオーダ替え時に、段ボールシートの両端部に形成されるトリムを前後に切り離すエッジカットを行なうエッジカット装置であって、
前記段ボールシートの両端部の走行位置に対応するように分割して同軸状に配置された第1及び第2のエッジカットナイフと、
前記段ボールシートの搬送ラインを挟んで前記第1及び第2のエッジカットナイフに対向して設けられたアンビルシリンダと、
前記第1のエッジカットナイフと結合する第1の支持体及び前記第2のエッジカットナイフと結合する第2の支持体と、
前記第1及び第2のエッジカットナイフを回転駆動する回転駆動機構と、
装置幅方向に延在し前記第1及び第2の支持体を背面から支持して、前記第1及び第2のエッジカットナイフが前記トリムを切断する際の反力を受けるバックアップビームと、
前記第1及び第2の支持体を、前記装置幅方向に駆動する幅方向駆動機構とを有する
ことを特徴とする、エッジカット装置。 - 前記幅方向駆動機構は、前記バックアップビームに回転自在に支持され前記装置幅方向に延在する第1及び第2のボールネジと、前記第1の支持体に穿設され前記第1のボールネジが貫通して螺合するネジ孔と、前記第2の支持体に穿設され前記第2のボールネジが貫通して螺合するネジ孔と、前記第1及び第2のボールネジを回転駆動する駆動源とを有し、
前記回転駆動機構は、前記バックアップビーム及び前記第1の支持体に軸支される前記第1のエッジカットナイフの回転軸である第1の軸と、前記バックアップビーム及び前記第2の支持体に軸支される前記第2のエッジカットナイフの回転軸である第2の軸と、前記第1及び第2の軸を回転駆動する駆動源とを有し、
前記アンビルシリンダは、前記段ボールシートの両端部の走行位置に対応するように分割して同軸状に配置された第1及び第2のアンビルシリンダから構成され、前記第1及び第2のアンビルシリンダはいずれも前記装置幅方向に延在する第2のバックアップビームに支持されている
ことを特徴とする、請求項15記載のエッジカット装置。 - 請求項1~7の何れか1項に記載のコルゲートマシンにおけるトリム処理方法によって形成される不良シート形状であって、
前記段ボールシートにおける前記旧オーダトリムが形成される個所の後端部に形成される第1のナイフ傷と、前記段ボールシートにおける前記新オーダトリムが形成される個所の前端部に形成される第2のナイフ傷とが、前記第1のエッジカット工程で形成される第1のエッジカット個所と、前記第2のエッジカット工程で形成される第2のエッジカット個所との間の領域内に形成される
ことを特徴とする、不良シート形状。
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