JP2009291992A - Machine for making corrugated fiberboard sheet box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently work a short length of corrugated fiberboard sheet, and to attain printing of high quality, by providing a printer provided with a plurality of printing plates rotated at a rotational speed synchronized with a conveying speed of a corrugated fiberboard sheet, and by supplying the plurality of short-dimensional corrugated fiberboard sheets during one rotation of each printing plate. <P>SOLUTION: The two sheets of short-dimensional corrugated fiberboard sheets SS1-2, SS2-3 are supplied respectively during one rotation of a printing cylinder 40 by supply claws 218A, 223A of a belt kicker mechanism 21, and the two sheets of short-dimensional corrugated fiberboard sheets are positioned consecutively within a range of conveying-directional circumferential distance CL corresponding to a circumferential length of an outer circumferential face of the printing cylinder 40. The two printing plates 411, 412 carry out prescribed printing respectively onto the consecutively conveyed short-dimensional corrugated fiberboard sheets, during one rotation of the printing cylinder 40. The printing is carried out onto the short-dimensional corrugated fiberboard sheets in every rotation of the printing cylinder 40, as a result thereof, and the number of printing per unit time is increased two times compared with a conventional printer. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a corrugated sheet box making machine provided with a printing plate that rotates to perform printing on a corrugated cardboard sheet. More specifically, a plurality of short corrugated cardboard sheets are supplied during one rotation of the printing plate. The present invention relates to a corrugated cardboard box making machine equipped with a feeding device capable of performing the above.

  Generally, a corrugated sheet box making machine includes a supply device that supplies a corrugated sheet to a transport path one by one from a storage unit in which a large number of corrugated sheets are stacked, and a printing device that performs printing on the transported corrugated sheet, A processing device such as a slotter device for grooving is provided along the conveyance path. The printing apparatus includes a printing cylinder that rotates at a rotation speed synchronized with the conveyance speed of the cardboard sheet, and a single printing plate disposed on the outer peripheral surface of the printing cylinder, on each cardboard sheet supplied from the storage unit. Printing is performed at a predetermined position. The supply device pushes each cardboard sheet from the storage unit to the conveyance path at a timing related to the rotation position of the printing plate of the printing device, and supplies one cardboard sheet while the printing plate rotates once.

  In recent years, various small-scale production has become necessary, and it is possible to process corrugated sheets of various sizes from relatively long long corrugated sheets to short corrugated sheets that are less than half of the long corrugated sheets. It came to be required. In response to this requirement, it has been possible to process corrugated sheets of various sizes with conventional corrugated sheet making machines. However, in a conventional corrugated sheet box making machine, the diameter of the printing cylinder is adjusted to the length of the longest corrugated sheet so that printing can be performed on one corrugated sheet during one rotation of the printing plate. Therefore, even when a short cardboard sheet is processed, only one short cardboard sheet is supplied during one rotation of the printing plate. As a result, short cardboard sheets are transported at large intervals on the transport path, and there is a lot of play time when no processing is performed on the short cardboard sheets. There has been a problem that efficiency, that is, the number of corrugated cardboard sheets processed per unit time decreases.

In order to solve the above problem and improve the processing efficiency of the short cardboard sheet, the applicant continuously controls the rotation of the printing cylinder at a variable speed so that the short cardboard sheet can be continuously formed without a gap. A corrugated cardboard box making machine that can be conveyed and processed is proposed (Patent Document 1). This proposed corrugated sheet box making machine is the same as the conventional corrugated sheet box making machine in that one corrugated sheet is supplied while the printing cylinder provided with one printing plate rotates once. There is a region in which the speed region of one rotation of the printing cylinder is a rotational speed synchronized with the conveyance speed of the corrugated cardboard sheet, and a region in which the first variable speed rotational speed is accelerated or decelerated with respect to the synchronous rotational speed. And the second variable speed rotation speed area that is accelerated or decelerated with respect to the first variable speed rotation speed. When a short corrugated cardboard sheet shorter than half of the circumference of the printing cylinder of the printing cylinder is continuously transported and processed, in order to synchronize the transport and timing of each short corrugated cardboard sheet, The conveyance position of each short cardboard sheet is detected, and the first and second variable speed rotation speeds are accelerated to a high speed according to the detection result. As the length of the short corrugated cardboard sheet is shortened, a higher rotational speed is required as the variable speed rotational speed in order to match the timing of the transport of the short corrugated cardboard sheet.
JP 2003-1727 A

  However, in the proposed corrugated sheet box making machine, each rotation of the printing cylinder is speed-controlled in three speed regions according to the conveyance position of the corrugated cardboard sheet. Is required. In addition, when the rotating printing plate prints on the corrugated cardboard sheet and leaves the corrugated cardboard sheet, the ink stretches momentarily between the printing plate and the corrugated cardboard sheet due to its viscosity. May explode and scatter due to further rotation. Since the ink scattering range becomes wider as the printing cylinder rotates at a higher speed, the printing quality of the corrugated cardboard sheet may be reduced by the wide ink scattering.

  Therefore, the present invention includes a printing apparatus provided with a plurality of printing plates rotating at a rotation speed synchronized with the conveyance speed of the corrugated cardboard sheet, and the short corrugated cardboard sheet is used as a conveyance path while each printing plate rotates once. An object of the present invention is to provide a corrugated sheet box making machine capable of processing a short corrugated cardboard sheet with high processing efficiency by supplying a plurality of sheets toward the top, and achieving high-quality printing.

[First Invention Aspect and Specific Embodiments]
In order to achieve the above object, according to a first aspect of the present invention related to claim 1, printing is performed on a cardboard sheet transported by a transport device that transports the cardboard sheet at a predetermined transport speed along a transport path, and the transport device. And a printing apparatus provided with a plurality of printing plates arranged on the conveyance path and rotating at a rotation speed synchronized with the conveyance speed, and a length of the corrugated cardboard sheet in the conveyance direction is one of each of the plurality of printing plates A supply device capable of supplying a plurality of short corrugated cardboard sheets having a length equal to or less than half of the circumferential length of the rotation toward the conveyance path while each printing plate rotates once; The apparatus is configured to supply each short-sized cardboard sheet in association with the rotational position of each printing plate.

  The conveying apparatus according to the first aspect of the present invention is only required to have a function of conveying a cardboard sheet, and the conveying speed is not limited to a constant speed, and may be a variable speed.

  As long as the printing apparatus according to the first aspect of the present invention includes a plurality of printing plates, a plurality of rotating bodies including one printing plate are provided even if the printing apparatus includes a single rotating body including a plurality of printing plates on the outer peripheral surface. The structure to provide may be sufficient. Moreover, the rotational speed of each printing plate should just be a speed | rate synchronized with the conveyance speed of the cardboard sheet, and is not limited to a fixed speed. Further, the plurality of printing plates may be printing plates having the same printing pattern or printing plates having different printing patterns. Here, the printing plate means a member that is pressed against a cardboard sheet to form a printing pattern. Usually, each printing plate is attached to a predetermined position of a pedestal film wound around a rotating body.

  The supply device according to the first aspect of the present invention supplies each short-sized corrugated cardboard sheet with the rotational position and timing of each printing plate aligned so that each printing plate can print on each short-sized corrugated cardboard sheet. Any configuration can be used. Since the number of short corrugated cardboard sheets supplied during one rotation of each printing plate is determined based on the length of the short corrugated cardboard sheet and the circumferential length of one rotation of each printing plate, two sheets It is not limited to. Here, the circumferential length of one rotation of each printing plate means the distance that the printing plate rotates on the circumference of the rotating body when the rotating body provided with each printing plate rotates once.

  The invention according to claim 2 is a specific embodiment embodied with respect to the printing apparatus. This specific aspect is a configuration in which a plurality of printing plates have a printing rotator provided on the outer peripheral surface with mutually different rotational phases.

  The invention according to claim 3 is a specific embodiment embodied with respect to the conveyance speed and the rotation speed of each printing plate. In this specific aspect, the transport device transports a short cardboard sheet at a constant transport speed, and each printing plate of the printing apparatus rotates at a constant rotation speed synchronized with the constant transport speed.

  The invention according to claim 4 is a specific embodiment embodied with respect to the supply device. In this specific aspect, the supply device stacks and stores a plurality of short cardboard sheets and stores a plurality of short cardboard sheets stored in the storage section one by one toward the conveyance path. And a supply claw portion to be pushed out.

  In the specific aspect of Claim 4, the supply nail | claw part should just extrude the short corrugated cardboard sheet | seat one sheet | seat at a time in relation to the rotation position of each printing plate. There need not be more than one. For example, one supply claw portion may be configured to operate at a speed higher than the conveyance speed in accordance with the number of short cardboard sheets pushed out while each printing plate rotates once.

  The invention according to claim 5 is a specific embodiment embodied with respect to the supply claw portion. In this specific embodiment, the supply device has a plurality of supply claw portions that perform an extruding operation of a short cardboard sheet in association with the rotational positions of the plurality of printing plates.

  The invention according to claim 6 is a specific embodiment further embodied with respect to the supply claw portion. In this specific aspect, the plurality of supply claws are arranged in parallel in the direction orthogonal to the conveyance direction of the short corrugated cardboard sheet, and are different from each other in the conveyance direction in relation to the rotational position of the plurality of printing plates. It is the structure arrange | positioned.

  In a specific aspect of the sixth aspect, one supply claw portion or a plurality of supply claw portions may be provided in association with the rotational position of each printing plate in the plurality of printing plates. For example, a configuration may be adopted in which a plurality of supply claw portions are provided corresponding to each printing plate and are alternately arranged in parallel with a plurality of supply claw portions corresponding to other printing plates.

  The invention according to claim 7 is a specific embodiment embodied with respect to the position adjustment of the supply claw portion. In this specific aspect, the arrangement position of at least one supply claw portion of the plurality of supply claw portions can be adjusted with respect to the other supply claw portions.

  The invention according to claim 8 is a specific embodiment embodied with respect to the adjustment of the rotational phase of the printing plate. In this specific aspect, the rotational phase of at least one printing plate of the plurality of printing plates can be adjusted with respect to the other printing plates.

  The invention according to claim 9 is a specific embodiment embodied with respect to the supply timing adjustment of the supply device. In this specific aspect, the supply device is driven by supply drive means that operates independently from the conveyance drive means that drives the conveyance device, and the supply timing of each short cardboard sheet is relative to the rotational position of the printing plate. It can be adjusted.

  The invention according to claim 10 is a specific embodiment embodied with respect to the grooving device. In this specific embodiment, a grooving machine is provided with a plurality of grooving bodies arranged on a conveyance path for grooving a corrugated cardboard sheet conveyed by a conveyance device and rotating at a rotation speed synchronized with the conveyance speed. It is the structure provided with the apparatus.

  According to a specific aspect of claim 10, even if a plurality of grooving bodies are provided on one rotating body, a plurality of rotators including one grooving body are arranged along the conveyance path. May be. Further, the rotational speed of the grooving processed body is not limited to a constant rotational speed as long as the rotational speed is synchronized with the transport speed. Further, the grooving device may be a device that grooves the corrugated cardboard sheet, and may be a slotter device having a grooving knife or a die cutter device having a punching tool.

  The invention which concerns on Claim 11 is the specific aspect further actualized regarding the grooving apparatus. In this specific embodiment, the grooving device has a plurality of grooving rotators arranged along the conveyance path, and each grooving processed body is provided on the outer peripheral surface of each grooving rotator.

  The invention according to claim 12 is a specific embodiment embodied with respect to the rotational phase adjustment of the grooving processed body. In this specific aspect, the rotational phase of at least one grooving body of the plurality of grooving bodies can be adjusted with respect to the other grooving bodies.

  The invention according to claim 13 is a specific embodiment further embodied with respect to the grooving body. In this specific embodiment, each grooving body comprises two processing blades for grooving the front end portion and the rear end portion of each short cardboard sheet, and the interval between the two processing blades can be adjusted. It is. Since the interval between the two processing blades can be adjusted, at least one of the blades may be a moving blade.

[Second Invention Aspect and Specific Embodiments]
In order to achieve the above object, according to a second aspect of the present invention related to claim 14, printing is performed on a cardboard sheet transported by a transport device that transports a corrugated cardboard sheet at a predetermined transport speed along a transport path. A first printing plate and a second printing plate that are arranged on the conveyance path to perform the rotation and that rotate at a rotation speed synchronized with the conveyance speed, and a rotation rotating body provided on the outer peripheral surface with different rotation phases; A first grooving sheet disposed on a conveyance path for performing grooving processing on a corrugated cardboard sheet conveyed by the apparatus in association with the rotation position of the first printing plate and rotating at a rotation speed synchronized with the conveyance speed. A rotating body and a corrugated cardboard sheet conveyed by a conveying device are arranged on a conveying path to perform grooving processing in relation to the rotation position of the second printing plate, and rotate at a rotation speed synchronized with the conveyance speed. Second Conveys the corrugated sheet and the short corrugated sheet whose length in the conveying direction of the corrugated cardboard sheet is half or less of the circumferential length of the outer peripheral surface of the printing rotating element during one rotation of the rotating printing element. A supply device capable of supplying two sheets toward the path, and the supply device supplies each short-sized cardboard sheet in association with the rotation positions of the first printing plate and the second printing plate. It is.

  The second aspect of the invention is implemented in various aspects, similar to the first aspect of the invention, with respect to the configuration common to the first aspect of the invention. Further, the order in which the printing rotator, the first grooving rotator, and the second grooving rotator are arranged in the conveyance path is not limited to the description order described in the claims. Furthermore, a configuration in which devices other than these processing devices, for example, a creaser device that applies ruled lines in the transport direction may be arranged along the transport path.

  The invention according to claim 15 is a specific embodiment which is further embodied with respect to the grooving rotary body and the supply device. In this specific aspect, the printing rotator is configured such that the first and second printing plates are exchangeably attached, and each of the first and second grooving rotators is formed of each short-sized corrugated cardboard sheet. In order to perform grooving at the front end portion and the rear end portion, a fixed blade and a movable blade capable of adjusting the interval between the fixed blade are provided on the outer peripheral surface, and the supply device includes the first printing plate. And a first supply nail part and a second supply nail part for pushing out each short-sized cardboard sheet to the conveyance path in association with the rotational position of the second printing plate, The second supply claws are arranged side by side in a direction orthogonal to the conveyance direction of the short corrugated cardboard sheet and are arranged at different positions in the conveyance direction, and the circumferential length of the outer peripheral surface of the printing rotating body in the conveyance direction Long corrugated sheets longer than half of the When being conveyed, moving blade while being positioned at a position close to the fixed blade, feed claw portion of the first and second are arranged in a position where the one row in the direction perpendicular to the conveying direction.

[Effect of the first aspect of the invention]
The first aspect of the invention includes a printing apparatus provided with a plurality of printing plates, and a supply device capable of supplying a plurality of short cardboard sheets while each printing plate rotates once. Short cardboard sheets can be processed with high processing efficiency. Further, since it is not necessary to operate the printing apparatus at high speed or to perform complicated variable speed control, it is possible to suppress ink scattering and achieve high quality printing with a simple configuration.

[Effects of specific embodiments]
Since the specific aspect of Claim 2 has the printing rotary body provided with the some printing plate, compared with the structure provided with two or more printing rotary bodies provided with one printing plate along a conveyance path | route, it is a conveyance direction. The increase in size of the entire apparatus can be suppressed.

  According to a specific aspect of the present invention, since each printing plate rotates at a relatively low constant rotational speed synchronized with a constant conveyance speed, each printing plate immediately after printing on the corrugated cardboard sheet. The area in which the thread-like ink ruptures and scatters between the sheet and the cardboard sheet is reduced, and high-quality printing can be performed on the cardboard sheet. In addition, since vibration of the printing apparatus itself generated by high-speed rotation or variable-speed rotation of each printing plate is reduced, a stable printing operation can be performed without vibration of each printing plate. Further, in the case where a plurality of printing plates are provided on one printing rotator, the printing operation at a speed synchronized with the conveyance speed is required for printing of all the printing plates. Thus, it is difficult to perform variable speed control with high accuracy for each printing plate during one rotation of the printing rotator, and this specific aspect is applied to a configuration in which a plurality of printing plates are provided on one printing rotator. The constant speed rotation is particularly effective.

  The specific aspect of the present invention has a supply claw portion for supplying short cardboard sheets one by one from the storage portion, so that it is shorter than a supply roller that is in frictional contact with the surface of the cardboard sheet. Regardless of the rigidity of the small corrugated cardboard sheet, the paper material such as moisture contained in the sheet, and the warpage of the sheet, the short corrugated cardboard sheet can be reliably extruded. In addition, the supply operation at an accurate timing related to the rotation position of each printing plate can be performed with a simple configuration.

  Since the specific aspect of claim 5 has a plurality of supply claw portions, it is not necessary to operate each supply claw portion at a higher speed than a supply device having one supply claw portion, and the supply claw portions are shorter in size. When the extrusion operation is performed while abutting against the edge portion of the cardboard sheet, it is possible to suppress damage to the edge portion.

  In a specific aspect of the present invention, since the plurality of supply claws are arranged in parallel in the direction orthogonal to the conveyance direction, the position of each supply claw in the conveyance direction is adjusted to the rotation position of each printing plate. It can be easily set independently from the nail portion, and it is easy to match the timing of the rotation position of each printing plate and the position of each supply nail portion in the transport direction.

  The specific aspects of claims 7, 8 and 12 include position adjustment between a plurality of supply claws, position adjustment between a plurality of printing plates, and position adjustment between a plurality of grooving bodies. Therefore, it is possible to easily adjust the timing for performing processing such as printing and grooving on a short cardboard sheet continuously conveyed.

  According to a specific aspect of the present invention, the supply device is driven independently from the transport device, and the supply timing of the supply device can be adjusted with respect to the rotation position of the printing plate. It is possible to easily match the timing with the supply operation. That is, since a plurality of processing devices such as a printing device and a grooving device need to operate in synchronization with the conveyance of the conveyance device, the processing operation synchronized with the plurality of processing devices and the supply of the supply device When adjusting the timing with the operation, supply of the supply device based on the processing operation of the plurality of processing devices, rather than adjusting the timing of each processing operation of the plurality of processing devices based on the supply operation of the supply device It is easier to adjust the timing of the machining operation and the supply operation when the timing is adjusted. For this reason, in this specific aspect, the timing of the rotation position of the printing plate and the supply operation of the supply device is adjusted by independently adjusting the supply timing with reference to the rotation position of the printing plate that performs printing as the processing operation. Can be adjusted easily and accurately.

  Since the specific aspect of claim 10 includes a grooving device provided with a plurality of grooving bodies, a plurality of short corrugated cardboard sheets conveyed by a plurality of grooving bodies are used. Each grooving can be performed.

  Since the specific aspect of claim 11 has a plurality of grooving rotators, a plurality of short sheets conveyed continuously compared to a configuration in which a plurality of grooving processed bodies are provided on one grooving rotator. It becomes easy to independently adjust the depth of grooving applied to each small cardboard sheet for each short cardboard sheet.

  According to a specific aspect of the thirteenth aspect of the present invention, since the grooving body is composed of two processing blades whose distance can be adjusted, the grooving applied to the front end portion and the rear end portion of the short corrugated cardboard sheet, respectively. Can be easily adjusted.

[Effect of the second aspect of the invention]
A second aspect of the invention is a printing rotating body provided with the first and second printing plates, the first and second grooving rotating bodies, and a short cardboard sheet while each printing plate makes one rotation. With the supply device capable of supplying two sheets of paper, printing and grooving can be performed on a short cardboard sheet that is continuously conveyed with a processing efficiency twice that of the prior art. Moreover, since it is not necessary to operate the printing rotator at high speed or to perform complicated variable speed control, it is possible to achieve high quality printing with a simple and compact configuration by suppressing ink scattering. it can.

[Effects of specific embodiments]
According to a specific aspect of the present invention, the printing plate is replaced, the fixed blade and the movable blade of each of the first and second grooving rotators are changed to positions close to each other, and the first and second supply claws By arranging the portions in a row, it is possible to easily change to a configuration capable of processing a long cardboard sheet instead of a short cardboard sheet. That is, a long cardboard sheet is supplied by the first and second supply claws arranged in a row, and the first and second grooving rotators provide the front and rear ends of the long cardboard sheet. Since each grooving is done, corrugated sheets of various sizes, from short to long, can be obtained by simply adjusting or replacing part of the existing processing equipment without making major changes to the processing equipment. It can be processed by a single corrugated sheet box making machine.

[First embodiment]
A first embodiment in which the present invention is applied to a corrugated cardboard box making machine that performs processing such as printing and grooving on a corrugated cardboard sheet will be described below with reference to the accompanying drawings. The corrugated board box making machine of this embodiment is configured to supply and process two short corrugated sheets while the printing cylinder rotates once. It may be configured to perform processing. In addition, the up-down direction, the left-right direction, and the front-back direction are defined according to the direction shown by the arrow in the drawing.

<Overall configuration>
FIG. 1 is a front view showing an overall configuration of a corrugated cardboard box making machine 1 according to the present embodiment. The corrugated cardboard box making machine 1 includes a supply device 2 for supplying short cardboard sheets SS one by one toward the conveyance path PL, and a short cardboard sheet SS supplied from the supply device 2 as a conveyance path. The conveyance device 3 conveys along the PL, and a plurality of processing devices arranged along the conveyance path PL in order to sequentially process the short cardboard sheet SS conveyed. In the present embodiment, as a plurality of processing devices, a printing device 4 that performs printing on a short cardboard sheet SS, a creaser device 5 that applies ruled lines in the conveyance direction to the short cardboard sheet SS, and a short cardboard sheet SS. A slotter device 6 for cutting grooves and a die cutter device 7 for punching a short cardboard sheet SS are provided.

<Configuration of supply device>
A detailed configuration of the supply device 2 will be described below with reference to FIGS. 2 and 3. FIG. 2 is an enlarged front view showing the detailed configuration of the supply device 2. The supply device 2 includes a hopper 20, a belt kicker mechanism 21, and a pair of feed rolls 22A and 22B. Further, the supply device 2 includes a paper feed table 23 that extends in the horizontal direction at the same height as the transport path PL.

(Configuration of hopper)
In FIG. 2, the hopper 20 is disposed on the paper feed table 23 and includes a front gate 201 and a back guide 202 that are spaced apart from each other in the paper feed direction FD of the short cardboard sheet SS. A large number of short cardboard sheets SS are stacked and accommodated between the front gate 201 and the back guide 202. The shortest corrugated cardboard sheet SS in the lowermost layer is configured to be fed one by one from the gap between the front gate 201 and the paper feed table 23. The back guide 202 is configured to be movable in a direction parallel to the sheet feeding direction FD with respect to the front gate 201, and is configured to accommodate cardboard sheets having different lengths in the sheet feeding direction FD. Further, the back guide 202 performs an operation of lifting the rear end portion of the short cardboard sheet SS in the hopper 20 to a height that allows movement of a supply claw portion described later. A large number of greats 203 that support the rear end portion from below are provided. As shown in FIG. 3, each great 203 is arranged between a first belt kicker and a second belt kicker, which will be described later, and is configured to be movable up and down by the operation of an air cylinder or the rotation of a cam. Since the back guide 202 has a known configuration as disclosed in Japanese Patent Application Laid-Open No. 2000-62981, etc., detailed description thereof is omitted.

(Configuration of belt kicker mechanism)
The belt kicker mechanism 21 has a suction assist kicker type structure, and is arranged below the paper feed table 23 to push out the shortest corrugated cardboard sheet SS stored in the hopper 20 in the paper feed direction FD. It is. FIG. 3 is a plan view of the belt kicker mechanism 21 as viewed from above. As shown in FIG. 3, the belt kicker mechanism 21 includes a first belt kicker set 211 and a second belt kicker set 212. The first belt kicker set 211 includes five first belt kickers 211A to 211E, and the second belt kicker set 212 includes four second belt kickers 212A to 212D. The first and second belt kickers are alternately arranged in parallel in a direction orthogonal to the paper feeding direction FD (the front-rear direction in FIG. 3).

  Since the first belt kickers 211A to 211E have the same configuration, the first belt kicker 211A will be described with reference to FIG. FIG. 4 is a front view showing a schematic configuration of the first belt kicker 211A. In FIG. 4, a first belt kicker 211A includes a first drive pulley 214A fixed to the first drive shaft 213, a first driven pulley 216A rotatably supported by a support shaft 215, and both pulleys. And a first endless belt 217A that is wound. The first drive shaft 213 and the support shaft 215 are rotatably supported by the frame of the supply device 2, and are arranged so as to extend in parallel in the front-rear direction in FIG. The first supply claw portion 218A protrudes on the first endless belt 217A so as to contact the rear end portion of the shortest corrugated cardboard sheet SS accommodated in the hopper 20. The first drive shaft 213 is connected to the first drive motor 219 via a known power transmission mechanism such as a gear train, and the rotation of the drive motor 219 causes the first drive pulley 214A to move in the direction of the arrow shown in FIG. Rotate to

  Since the second belt kickers 212A to 212D have the same configuration, the second belt kicker 212A will be described with reference to FIG. FIG. 5 is a front view showing a schematic configuration of the second belt kicker 212A. In FIG. 5, the second belt kicker 212A includes a second drive pulley 220A that is rotatably supported by the first drive shaft 213, a second driven pulley 221A that is rotatably supported by the support shaft 215, and And a second endless belt 222A wound around both pulleys. The second endless belt 222A has the same length as the first endless belt 217A in the longitudinal direction, and the movement amount of one cycle of both endless belts is the same. The second supply claw portion 223A protrudes on the second endless belt 222A so as to contact the rear end portion of the shortest corrugated cardboard sheet SS accommodated in the hopper 20. As shown in FIGS. 4 and 5, the first and second supply claws 218 </ b> A and 223 </ b> A are positioned at point-symmetric positions on each endless belt. That is, when the first supply claw portion 218A is positioned to protrude upward from the first drive pulley 214A, the second supply claw portion 223A is positioned to protrude downward from the second driven pulley 221A. Thus, the positions of both supply claws are determined.

  The second drive shaft 224 is rotatably supported by the frame of the supply device 2 and is arranged to extend in parallel with the first drive shaft 213 in FIG. 3. A known power transmission mechanism is provided to the second drive motor 225. Connected through. The drive gear 226 </ b> A is fixed to the second drive shaft 224 and is arranged to mesh with a driven gear 227 </ b> A that is rotatably supported by the first drive shaft 213. The driven gear 227A is fixed to the side surface of the second drive pulley 220A and rotates integrally with the second drive pulley 220A. The second drive shaft 224 rotates the second drive pulley 220A in the direction of the arrow shown in FIG. 5 via the gears 226A and 227A by the rotation of the second drive motor 225.

  Similar to the first belt kicker 211A, the first belt kickers 211B to 211E include first supply claw portions 218B to 218E, respectively. As shown in FIG. 3, the five first supply claws 218 </ b> A to 218 </ b> E are arranged in a line in the front-rear direction. Similarly to the second belt kicker 212A, the second belt kickers 212B to 212D include second supply claw portions 223B to 223D, respectively. As shown in FIG. 3, the four second supply claws 223A to 223D are arranged in a line in the front-rear direction. Since a large number of supply claws arranged in a row in this way abuts against the rear end of the short cardboard sheet SS, almost the entire area of the rear end of the short cardboard sheet SS is evenly pressed. The damage at the rear end is suppressed. Further, the relative positional relationship between the arrangement position of the first supply claw portions 218A to 218E and the arrangement position of the second supply claw portions 223A to 223D is determined by the first and second drive motors 219 and 225. It can be easily adjusted by rotational driving.

  A suction chamber 24 is provided below the belt kicker mechanism 21 and connected to a suction blower 25. The shortest corrugated cardboard sheet SS in the lower layer of the hopper 20 is adsorbed to the endless belt by the suction action of the suction blower 25, so that the supply claw portion reliably contacts the rear end of the short corrugated cardboard sheet SS. You can touch.

(Configuration of feed roll)
The pair of feed rolls 22A and 22B is disposed downstream of the hopper 20 in the paper feeding direction FD. Specifically, when the shortest corrugated cardboard sheet SS in the lowermost layer in the hopper 20 is pushed out in the paper feeding direction FD by the supply claw, the feed rolls 22A and 22B are pushed out by the short corrugated cardboard sheet SS. It arrange | positions in the position which can clamp the front-end part. The feed rolls 22A and 22B are connected to the main drive motor 8 shown in FIG. 2 via a known power transmission mechanism, and rotate in the direction of the arrow shown in FIG. The feed rolls 22 </ b> A and 22 </ b> B are driven to rotate and feed the short cardboard sheet SS toward the transport path PL while sandwiching the short cardboard sheet SS.

  The supply device 2 of this embodiment is an example of the supply device of the present invention, the hopper 20 is an example of the storage portion of the present invention, and the first and second supply claw portions 218A to 218E and 223A to 223D are It is an example of the supply nail | claw part of invention, and is an example of the 1st supply claw part and 2nd supply claw part of this invention. The main drive motor 8 of this embodiment is an example of the conveyance drive unit of the present invention, and the first and second drive motors 219 and 225 are examples of the supply drive unit of the present invention.

<Conveyor configuration>
As shown in FIG. 1, the transport device 3 includes a printing transport unit 30, a cleaner transport unit 31, and a slotter transport unit 32. These conveyance parts 30-32 are arrange | positioned along the conveyance path | route PL. Since the basic configurations of the conveyance units 30 to 32 are the same, the printing conveyance unit 30 will be described with reference to FIG. FIG. 6 is an enlarged front view showing the detailed configurations of the printing apparatus 4 and the printing transport unit 30. The printing conveyance unit 30 includes a large number of conveyance rollers 301 arranged along the conveyance path PL, a suction chamber 302 provided below the conveyance rollers 301, and a suction blower 303 connected to the suction chamber 302. Consists of. A large number of conveying rollers 301 are connected to the main drive motor 8 via a known power transmission mechanism, and rotate in the direction of the arrow shown in FIG. 6 by the rotation of the main drive motor 8. A number of transport rollers 301 are rotated to transport the short cardboard sheet SS sucked downward by the suction action of the suction blower 303 to the left along the transport path PL, that is, in a predetermined transport direction. To do. In the present embodiment, the direction along the transport path PL is the transport direction, which is the same direction as the paper feed direction FD.

  As shown in FIG. 1, the creaser transport section 31 and the slotter transport section 32 are provided with a large number of transport rollers 311 and 321 and are sucked downward by the suction action of the suction blower. The short cardboard sheet SS is transported to the left along the transport path PL. The transport apparatus 3 of this embodiment is an example of the transport apparatus of the present invention.

<Configuration of printing device>
A detailed configuration of the printing apparatus 4 will be described below with reference to FIGS. 6 and 7. FIG. 7 is an enlarged front view showing a detailed configuration of the printing cylinder 40 of the printing apparatus 4. In the present embodiment, the printing apparatus 4 is composed of a known roll-cut flexographic printing machine. The printing apparatus 4 mainly includes a printing cylinder 40, a printing plate member 41 for printing on a short cardboard sheet SS, an ink application device 42, and a press roll 43.

(Configuration of printing cylinder)
The printing cylinder 40 is rotatably supported by the frame of the printing apparatus 4 and is connected to the main drive motor 8 through a known power transmission mechanism, and rotates in the direction of the arrow shown in FIG. 6 by the rotation of the main drive motor 8. To do. As shown in FIG. 7, the printing cylinder 40 includes a fixed groove 400, a winding mechanism 401, and a printing phase adjustment mechanism 402. The fixing groove 400 is formed to extend in the radial direction on the outer peripheral surface of the printing cylinder 40 in order to fix one end of the printing plate member 41. The winding mechanism 401 is rotatably provided on the outer peripheral portion of the printing cylinder 40 in order to fix and wind the other end of the printing plate member 41. The rotation position of the winding mechanism 401 is held by a known holding means including a large number of holding grooves formed in the turning direction and an elastic holding claw that can be engaged with any one of the holding grooves. Configured.

(Configuration of printing plate and printing phase adjustment mechanism)
The printing phase adjusting mechanism 402 is provided on the outer peripheral portion of the printing cylinder 40 on the opposite side to the arrangement position of the fixed groove 400 in order to adjust the printing position of the printing pattern printed on the short cardboard sheet SS. . The print phase adjustment mechanism 402 includes an adjustment cam 402B that is rotatably provided in a storage chamber 402A formed inside the print cylinder 40, and an adjustment protrusion that is provided so as to be movable in the radial direction of the print cylinder 40. 402C. The adjustment protrusion 402C can change the protrusion amount from the outer peripheral surface of the printing cylinder 40 according to the rotation position of the adjustment cam 402B. Similar to the winding mechanism 401, the rotation position of the adjustment cam 402B is configured to be held by known holding means. The adjustment protrusion 402 </ b> C is any of a maximum protruding position that protrudes most from the outer peripheral surface of the printing cylinder 40, a retracted position that is retracted from the outer peripheral surface of the printing cylinder 40, and an intermediate protruding position that is positioned between the two positions. Displace to the position. FIG. 7 shows a state in which the adjustment protrusion 402C is located at the intermediate protrusion position.

  The printing plate member 41 is wound around the outer periphery of the printing cylinder 40. As shown in FIG. 7, the printing plate member 41 is configured by laminating a first printing plate 411 and a second printing plate 412 on a base film 410 made of a synthetic resin. One end portion of the printing plate member 41 is fixed to the printing cylinder 40 by being fitted into the fixing groove 400, and the other end portion is attached to the printing cylinder 40 by being wound by the winding mechanism 401. The printing plate member 41 is replaceably attached to the printing cylinder 40 by a fixing groove 400 and a winding mechanism 401. The first and second printing plates 411 and 412 are bonded to predetermined positions on the pedestal film 410 so that the first and second printing plates 411 and 412 are substantially point-symmetric with respect to the rotation axis of the printing cylinder 40 in a state of being wound around the printing cylinder 40. . In the present embodiment, the same printing pattern is formed on both printing plates 411 and 412, and the same printing content is continuously printed on two short cardboard sheets SS.

  When the printing pattern is printed on the short cardboard sheet SS by each of the printing plates 411 and 412, the printing position of the printing pattern on the short cardboard sheet SS may be shifted from a predetermined position. In this case, a large misalignment between the arrangement positions of the first and second printing plates 411 and 412 and the printing position on the short corrugated cardboard sheet SS causes the first and second independent of the main drive motor 8. This can be eliminated by driving the second drive motors 219 and 225 to adjust the arrangement positions of the first and second supply claws, that is, the supply timing of the short cardboard sheet SS. On the other hand, a relatively small displacement between the arrangement position of the second printing plate 412 and the printing position on the short corrugated cardboard sheet SS depends on the amount of protrusion of the adjustment protrusion 402C of the printing phase adjustment mechanism 402. Adjusted. That is, the adjustment protrusion 402 </ b> C pushes the pedestal film 410 of the printing plate member 41 wound around the printing cylinder 40 in the radial direction of the printing cylinder 40, thereby feeding the pedestal film 410 from the winding mechanism 401. By feeding out the base film 410, the arrangement position of the second printing plate 412 slightly approaches the arrangement position of the first printing plate 411 in the circumferential direction of the printing cylinder 40. On the other hand, when the adjustment protrusion 402C is retracted inward of the printing cylinder 40 and the pedestal film 410 is wound up by the winding mechanism 401, the arrangement position of the second printing plate 412 is set to the circle of the printing cylinder 40. In the circumferential direction, the first printing plate 411 is slightly away from the arrangement position. Thus, the relative rotation phase of the second printing plate 412 with respect to the first printing plate 411 is adjusted by the printing phase adjustment mechanism 402.

(Configuration of ink coating device)
The ink coating device 42 has a roll-cut configuration having an ink transfer roll 421 and a squeeze roll 422. An ink reservoir is formed at an upper portion where the ink transfer roll 421 and the squeeze roll 422 are in contact with each other, and ink is supplied by a known ink supply device. The supplied ink is squeezed by the ink transfer roll 421 and the squeeze roll 422 to form a film having an appropriate thickness on the outer peripheral surface of the ink transfer roll 421. The ink transfer roll 421 contacts each of the printing plates 411 and 412 to transfer the ink film to the printing plates 411 and 412.

(Configuration of press roll)
The press roll 43 is disposed at a position facing the printing cylinder 40 across the transport path PL, and is connected to the main drive motor 8 via a known power transmission mechanism. Rotate in the direction of the arrow shown. The press roll 43 sandwiches the conveyed short cardboard sheet SS between the printing plates 411 and 412 wound around the printing cylinder 40 and performs desired printing.

  The printing apparatus 4 of the present embodiment is an example of the printing apparatus of the present invention, and the first and second printing plates 411 and 412 are examples of the printing plate of the present invention and the first printing plate of the present invention. The printing cylinder 40 is an example of a printing rotating body of the present invention.

<Creaser device configuration>
As shown in FIG. 1, the creaser device 5 has an upper ruled line roll 50 and a lower ruled line roll 51 across the transport path PL. Both rolls 50 and 51 are connected to the main drive motor 8 through a known power transmission mechanism, and rotate in the direction of the arrow shown in FIG. 1 by the rotation of the main drive motor 8. Both rolls 50 and 51 apply a ruled line in the conveyance direction to a desired position of the short cardboard sheet SS being conveyed.

<Configuration of slotter device>
A detailed configuration of the slotter device 6 will be described below with reference to FIGS. 8 and 9. FIG. 8 is an enlarged front view showing a detailed configuration of the first and second slotter units 61 and 62 of the slotter device 6, and FIG. 9 is a part of the second slotter unit 62 of the slotter device 6. FIG. In FIG. 8, the slotter device 6 has a double slotter configuration having a first slotter unit 61 disposed on the upstream side and a second slotter unit 62 disposed on the downstream side along the transport path PL. It is. The first slotter unit 61 includes a slotter set for grooving composed of an upper first slotter 610 and a lower first slotter 611 disposed across the transport path PL in a direction orthogonal to the transport path PL. A set of known slotter sets for forming a joint is provided in the orthogonal direction. Both slotters 610 and 611 are connected to the main drive motor 8 through a known power transmission mechanism, and rotate in the direction of the arrow shown in FIG. 8 by the rotation of the main drive motor 8. Further, the second slotter unit 62 has a slotter set for grooving composed of the upper second slotter 620 and the lower second slotter 621 disposed across the transport path PL in a direction perpendicular to the transport path PL. Three sets are provided in the front-rear direction in FIG. 9 and one set of known slotter sets for forming a joint is provided in the orthogonal direction. Both slotters 620 and 621 are connected to the main drive motor 8 via a known power transmission mechanism, and rotate in the direction of the arrow shown in FIG. 8 by the rotation of the main drive motor 8.

  The upper first slotter 610 includes a first fixed blade 612 and a first movable blade 613 for grooving in the transport direction at the front end portion and the rear end portion of the preceding short cardboard sheet SS that is continuously transported. On the outer periphery. Here, the front end portion of the short cardboard sheet SS means the left end portion of the short cardboard sheet SS2-1 in FIG. 11, and the rear end portion of the short cardboard sheet SS in FIG. It means the right end of the short cardboard sheet SS2-1. The lower first slotter 611 is rotatably supported by the frame of the slotter device 6, and the first slotter blade 614 is formed in the entire outer peripheral portion. The upper first slotter 610 is rotatably supported by the frame of the slotter device 6 via the first slotter shaft 615. Further, the upper second slotter 620 includes a second fixed blade 622 and a second movable blade in order to make a groove in the conveying direction at the front end and the rear end of the subsequent short cardboard sheet SS that is continuously conveyed. 623 on the outer periphery. The lower second slotter 621 is rotatably supported by the frame of the slotter device 6 and the second slotter blade 624 is formed in the entire outer peripheral portion. The upper second slotter 620 is rotatably supported by the frame of the slotter device 6 via the second slotter shaft 625.

(Slotter unit configuration)
Since the first and second slotter units 61 and 62 have the same configuration, the second slotter unit 62 will be described as an example with reference to FIG. FIG. 9 shows only the upper second slotter 620 of the second slotter unit 62 in cross section according to the line AA shown in FIG. In FIG. 9, the second slotter shaft 625 is composed of a spline shaft and is rotatably supported by the frame 626 of the slotter device 6 via a bearing. The second slotter shaft 625 is connected to the main drive motor 8 via a known power transmission mechanism having a differential positioning mechanism 625A. Generally, the differential positioning mechanism includes a differential device such as a harmonic drive (registered trademark) and a differential adjustment motor. Harmonic Drive (registered trademark) includes a wave generator, a flex spline, and a circular spline. In the present embodiment, the second slotter shaft 625 is connected to the flexspline, and a transmission member for transmitting power from the main drive motor 8 is connected to the circular spline. A known differential adjustment motor consisting of a servo motor is connected to the wave generator. When the differential adjustment motor is rotationally driven, the rotational phase of each slotter shaft with respect to the transmission member to which power is transmitted from the main drive motor 8 is adjusted. A power transmission mechanism that uses a harmonic drive (registered trademark) to transmit power to a rotating spindle of a processing apparatus that processes a corrugated cardboard sheet is disclosed in the specification and drawings (FIG. 7) of US Pat. No. 3,882,745. Since it is publicly known, the detailed configuration and operation of the power transmission mechanism will not be described. Similar to the second slotter shaft 625, the first slotter shaft 615 is also connected to the main drive motor 8 via a known power transmission mechanism having a differential positioning mechanism.

  The upper second slotter 620 includes a slotter holder 627, a rotation gear 628 having a gear formed on the outer peripheral portion, and a rotation ring 629, together with the second fixed blade 622 and the second moving blade 623. The slotter holder 627 is supported by the slotter shaft 625 so as to be slidable in the axial direction so that the positions of the grooving performed at the front end portion and the rear end portion of the short cardboard sheet SS are changed. The rotating gear 628 and the rotating ring 629 are rotatably supported by a slotter holder 627 and are connected so as to rotate integrally with each other. The second movable blade 623 is fixed to the rotating ring 629, and the second fixed blade 622 is directly fixed to the slotter holder 627.

  The lower second slotter 621 is supported by the spline shaft so as to slide in the front-rear direction shown in FIG. 9 as the upper second slotter 620 slides on the slotter shaft 625 via the slotter holder 627. The lower second slotter 621 has a fitting groove 630 at the center in the front-rear direction. The fitting groove 630 is provided over the entire circumferential direction of the lower second slotter 621 and is formed so that the tip ends of the second fixed blade 622 and the second movable blade 623 are fitted.

(Moving blade phase adjustment mechanism)
In the present embodiment, in order to adjust the rotational phase of the second moving blade 623 with respect to the second fixed blade 622, the moving blade phase adjustment mechanism 640 shown in FIG. 9 is provided in the second slotter unit 62. The moving blade phase adjustment mechanism 640 includes an adjustment shaft 641 extending in parallel with the slotter shaft 625, a transmission gear 642, a phase adjustment motor 643, and a differential device 644. The adjustment shaft 641 is a spline shaft, is rotatably supported by a frame 626 of the slotter device 6 via a bearing, and is connected to a phase adjustment motor 643 via a differential device 644 such as a known harmonic drive (registered trademark). Is done. Specifically, a transmission shaft to which power is transmitted from the phase adjustment motor 643 is connected to a wave generator of a harmonic drive (registered trademark), and the adjustment shaft 641 is connected to a flex spline of the harmonic drive (registered trademark). A transmission member to which power is transmitted from the main drive motor 8 is connected to a circular spline of Harmonic Drive (registered trademark). Since the harmonic drive (registered trademark) itself is well known, explanation and illustration of its detailed configuration are omitted. The transmission gear 642 is supported by the adjustment shaft 641 so as to slide along the adjustment shaft 641 as the upper second slotter 620 slides on the slotter shaft 625 via the slotter holder 627. The transmission gear 642 meshes with the rotation gear 628 and transmits the rotation of the adjustment shaft 641 to the rotation gear 628. When the phase adjustment motor 643 is rotationally driven while the main drive motor 8 is stopped, the rotation is decelerated by a harmonic drive (registered trademark) which is a differential device 644, and the transmission gear 642 and the rotation gear 628 are rotated. The second moving blade 623 moves along the outer peripheral surface of the slotter holder 627 through the rotation ring 629. As a result, the rotational phase of the second movable blade 623 relative to the second fixed blade 622 is adjusted, and the depth of grooving applied to the front end portion and the rear end portion of the short cardboard sheet SS is adjusted. On the other hand, when the main drive motor 8 is driven to rotate and the slotter shaft 625 rotates while the phase adjustment motor 643 is braked and stopped, the rotation of the main drive motor 8 is adjusted via the differential device 644. 641. By rotating the adjustment shaft 641, the movable blade 623 can rotate together with the slotter holder 627 while maintaining a fixed positional relationship with the fixed blade 622. The moving blade phase adjustment mechanism having the above configuration is also provided in the first slotter unit 61.

(Configuration of slotter phase adjustment mechanism)
Since the depth of grooving applied to the end of the short cardboard sheet SS conveyed continuously is adjusted, the second slotter 620 of the upper second slotter 620 with respect to the first slotter shaft 615 of the upper first slotter 610 is adjusted. The relative rotational phase of the two slotter shaft 625 needs to be adjusted. For this purpose, the relative rotational phase is adjusted by rotationally driving the differential adjustment motor of the above-described differential positioning mechanism connected to the first and second slotter shafts 615 and 625, respectively.

  The slotter device 6 of this embodiment is an example of the grooving device of the present invention. Each of the slotter set consisting of the upper first slotter 610 and the lower first slotter 611 and the slotter set consisting of the upper second slotter 620 and the lower second slotter 621 are examples of the grooving rotator of the present invention. FIG. 3 is an example of first and second grooving rotators of the present invention. FIG. The set of the first fixed blade 612, the first moving blade 613 and the first slotter blade 614, and the set of the second fixed blade 622, the second moving blade 623 and the second slotter blade 624 are grooving according to the present invention. It is an example of a body. The first fixed blade 612 and the first movable blade 613, and the second fixed blade 622 and the second movable blade 623 are examples of two processing blades in the present invention, and are examples of the fixed blade and the movable blade of the present invention. .

<Configuration of die cutter device>
The die cutter device 7 has a rotary die cutter type configuration, and includes a die cylinder 70 and an anvil cylinder 71 with a conveyance path PL interposed therebetween. A pair of punching dies 73 and 74 for punching a short corrugated cardboard sheet SS are attached to a plate-like body such as a plywood veneer. Wound around the surface. Each of the punching dies 73 and 74 punches a desired position of a short cardboard sheet SS that is continuously conveyed. The die cylinder 70 and the anvil cylinder 71 are connected to the main drive motor 8 through a known power transmission mechanism, and rotate in the direction of the arrow shown in FIG. 1 by the rotation of the main drive motor 8.

<Electrical configuration>
The electrical configuration of the corrugated board box making machine 1 according to the first embodiment will be described below with reference to the accompanying drawings. FIG. 10 is a block diagram showing an electrical configuration of the cardboard sheet box making machine 1 of the present embodiment. As shown in FIG. 10, in order to generally manage the processing of corrugated cardboard sheets in the corrugated cardboard box making machine 1, an upper management apparatus 1000 and a lower management apparatus 1100 are provided. In the present embodiment, the upper management apparatus 1000 sends control command information regarding the rotational speed of the main drive motor 8, the size of the corrugated cardboard sheet, the processing quantity, and the like to the lower management apparatus 1100 in accordance with a predetermined processing management plan.

  The lower management apparatus 1100 controls the operations of the drive units such as the main drive motor 8 and the suction blowers 25 and 303 in accordance with the control command information sent from the higher management apparatus 1000, and counts the processing quantity of the corrugated cardboard sheet to perform the upper management. It is a device that performs management control such as sending to the device 1000. The lower management apparatus 1100 is connected to a program memory 1110 and a work memory 1120, and constitutes a computer that controls the cardboard sheet box making machine 1 of this embodiment together with these memories. The program memory 1110 is a memory for fixedly storing a control program for controlling the entire corrugated cardboard box making machine 1 and predetermined set values. The work memory 1120 is a memory that temporarily stores various information and arithmetic processing results sent from the upper management apparatus 1000 when executing the control program.

The lower management apparatus 1100 is connected to the operation panel 1130. The operation panel 1130 is
Adjustment information for adjusting the relative positional relationship between the arrangement positions of the first supply claws 218A to 218E and the arrangement positions of the second supply claws 223A to 223D, movable blades with respect to the fixed blades 612 and 622 613 and 623 are provided to input and set information such as adjustment information for adjusting the depth of grooving applied to the front end portion and the rear end portion of the short corrugated cardboard sheet SS by adjusting the rotational phase of the short cardboard sheet SS. . The operation panel 1130 sets a manual mode for driving the first and second drive motors 219 and 225 and the phase adjustment motor 643 according to a manual operation, and a test operation mode for performing a test operation of the corrugated cardboard box making machine 1. Is configured to be operable.

  The subordinate management apparatus 1100 controls the operation of the entire drive unit such as a motor and an air cylinder provided in the corrugated cardboard box making machine 1. Among the drive units, the drive unit directly related to the present invention. Only is shown in FIG. That is, the lower management apparatus 1100 is connected to the main drive motor 8, the first and second drive motors 219 and 225, and the phase adjustment motor 643 as drive units. The lower management apparatus 1100 controls the rotational speeds of the main drive motor 8 and the first and second drive motors 219 and 225 according to the control command information from the higher management apparatus 1000 and the adjustment information from the operation panel 1130. The rotation and stop of the phase adjustment motor 643 are controlled.

  The main drive motor 8 is connected to the pair of feed rolls 22A and 22B of the supply device 2, the transport device 3, the printing device 4, the crease device 5, the slotter device 6, and the die cutter device 7 as described above. They are connected via a known power transmission mechanism having a mechanism. The first and second drive motors 219 and 225 are coupled to the first and second belt kicker groups 211 and 212 of the supply device 2 via known power transmission mechanisms, respectively. The phase adjustment motor 643 is connected to the differential device 644 of the second slotter unit 62 in the slotter device 6. Although the first slotter unit 61 includes a phase adjustment motor, since it is driven and controlled in the same manner as the phase adjustment motor 643 of the second slotter unit 62, the phase adjustment motor of the first slotter unit 61 is shown in FIG. The differential positioning mechanism connected to each processing apparatus such as the slotter device 6 includes a differential adjustment motor. However, since the drive control of the differential adjustment motor is well known, The illustration of the dynamic adjustment motor in FIG. 10 is omitted.

<< Operation and Action of First Embodiment >>
The operation and action of the corrugated board box making machine 1 according to the first embodiment will be described below with reference mainly to FIGS. 11 and 12. 11 and 12 omit the die cutter device 7 for convenience of explanation, FIG. 11 is an explanatory view showing a process of processing a short cardboard sheet SS, and FIG. It is explanatory drawing which shows the process in which the corrugated-cardboard sheet | seat LS is processed. Here, the short corrugated cardboard sheet SS means a corrugated cardboard sheet having a length equal to or less than half of the circumferential length of the printing cylinder 40 in the transport direction along the transport path PL. This means a corrugated sheet longer than half the circumferential length of the printing cylinder 40. That is, in FIG. 11, the circumferential length CL indicates a distance equal to the circumferential length of the printing cylinder 40 in the conveyance direction, and two short cardboard sheets SS2-2, SS1- 2 are arranged within the range of the circumferential distance CL. Further, in FIG. 12, only one long cardboard sheet out of two long cardboard sheets LS-2 and LS-3 conveyed in succession is disposed within the circumferential distance CL. Is done.

<Processing of short cardboard sheets>
First, the processing operation of the short cardboard sheet SS will be described with reference to FIG. As shown in FIG. 11, short cardboard sheets SS are stacked on the hopper 20. In addition, the printing plate member 41 having the first and second printing plates 411 and 412 is wound around the outer periphery of the printing cylinder 40, and the adjustment protrusion 402C has an outer peripheral surface of the printing cylinder 40 as shown in FIG. Is set to an intermediate protruding position slightly protruding from the center. When the cardboard sheet box making machine 1 is turned on after this pre-processing preparatory work is completed, the upper management apparatus 1000 starts operating and the lower management apparatus 1100 operates according to the control program in the program memory 1110. Start. The host management device 1000 creates an operation command plan for the corrugated board box making machine 1 based on the processing management plan, and calculates a speed command for the main drive motor 8. According to the created operation command plan, the upper management device 1000 sends the calculated speed command for the main drive motor 8 and the operation command for controlling the operation of the supply device 2, the transport device 3 and the plurality of processing devices to the lower management device. 1100. The lower management apparatus 1100 temporarily stores the speed command and the operation command in the work memory 1120.

(Timing adjustment operation)
It is necessary to adjust the timing of the supply operation of the supply device 2 and the processing operation of each processing device such as the printing device 4 so that the short cardboard sheet SS is processed. For this purpose, the user uses the operation panel 1130 to connect the first and second drive motors 219 and 225, the phase adjustment motor of the first slotter unit 61, and the phase adjustment motor 643 of the second slotter unit 62. Set the manual mode to rotate according to manual operation. In the manual mode setting state, the user drives each of the first and second drive motors 219 and 225 according to a manual operation, and arranges the first supply claw portions 218A to 218E and the second supply claw. The positions of the portions 223A to 223D are provisionally positioned. In addition, the user drives each of the phase adjustment motors according to a manual operation, and sets the rotation phase of the first moving blade 613 relative to the first fixed blade 612 and the rotation phase of the second moving blade 623 relative to the second fixed blade 622. Position temporarily. In the present embodiment, the supply operation by the first supply claws 218 </ b> A to 218 </ b> E is synchronized with the printing operation by the first printing plate 411, and is synchronized with the grooving operation by the first fixed blade 612 and the first movable blade 613. There is a need to. The supply operation by the second supply claw portions 223A to 223D needs to be synchronized with the printing operation by the second printing plate 412 and at the same time as the grooving operation by the second fixed blade 622 and the second movable blade 623.

(Print timing adjustment operation)
The user uses the operation panel 1130 to set a test operation mode in which the corrugated cardboard box making machine 1 is subjected to a test operation in order to check whether the timing adjustment is appropriate. In the test operation mode setting state, the lower stage management apparatus 1100 drives the main drive motor 8 in accordance with the speed command stored in the work memory 1120, and the first and second speeds are synchronized with the speed of the main drive motor 8. The drive motors 219 and 225 are driven, and the corrugated board box making machine 1 is experimentally operated according to the operation command stored in the work memory 1120. By this test operation, processing such as printing and grooving is performed on the conveyed short cardboard sheet SS. A detailed description will be given later of each operation of supplying, conveying, printing, and grooving the short cardboard sheet SS.

  Printing in the test operation is performed at the printing position P1-2 on the short cardboard sheet SS1-2 by the first printing plate 411, and this printing position P1-2 is compared from the predetermined position to the left side in FIG. If there is a large shift, the shift to the left side is caused by the supply operation being delayed with respect to the print operation. In order to eliminate the leftward shift, the user rotates the first drive motor 219 in the forward direction by manual operation in the manual mode, and the first supply claws 218A to 218E so that the supply timing is advanced. Are positioned in the paper feeding direction FD. When the print position P1-2 is relatively deviated from the predetermined position to the right side in FIG. 11, the user rotates the first drive motor 219 in the reverse direction by manual operation, so that the supply timing is delayed. The supply claw portions 218A to 218E are rearranged in the paper feeding direction FD and positioned. Similarly, the user manually operates the second drive motor 225 in order to eliminate the relatively large displacement of the printing position P2-2 on the short cardboard sheet SS2-2 by the second printing plate 412. , And the positioning positions of the second supply claws 223A to 223D are advanced or delayed in the paper feeding direction FD.

  In a state where the printing position P1-2 by the first printing plate 411 is positioned at a predetermined position, when the printing position P2-2 by the second printing plate 412 is slightly shifted from the predetermined position, the user 7 is rotated manually to finely adjust the amount of protrusion of the adjustment protrusion 402C. For example, in FIG. 11, when the printing position P2-2 is slightly shifted to the left side from the predetermined position, this slight shifting to the left side indicates that the rotational phase of the second printing plate 412 on the printing cylinder 40 is the first. This is caused by being too close to the rotational phase of one printing plate 411. In order to eliminate this slight shift to the left side, the user rotates the adjustment cam 402B to reduce the protrusion amount of the adjustment protrusion 402C, and the second printing plate 412 moves in the circumferential direction of the printing cylinder 40. The rotational phase of the second printing plate 412 is finely adjusted so as to be slightly away from the first printing plate 411. When the printing position P2-2 is slightly shifted to the right side from the predetermined position, the user increases the protruding amount of the adjustment protrusion 402C, and the second printing plate 412 slightly approaches the first printing plate 411. Thus, the rotational phase of the second printing plate 412 is finely adjusted.

(Grooving timing adjustment operation)
Groove cutting is performed by the fixed blade and the movable blade of each of the first and second slotter units 61 and 62 at the front end portion and the rear end portion of the short cardboard sheet SS. When the grooving depth at the front end portion (the length in the left-right direction in FIG. 11) deviates from a predetermined depth, this grooving depth shift at the front end portion is caused by the fixed blade on the upper slotters 610 and 620. This occurs because the rotational phases of 612 and 622 are not synchronized with the supply operation by the first and second supply claws 218A and 223A. In order to eliminate the deviation of the groove depth at the front end, the user connects to the first slotter shaft 615 of the upper first slotter 610 and the second slotter shaft 625 of the upper second slotter 620 by the operation panel 1130, respectively. A manual mode is set in which the differential adjustment motor of the differential positioning mechanism is operated according to a manual operation. In this manual mode setting state, the user operates the differential adjustment motor of each differential positioning mechanism according to a manual operation, and the grooves at the front end portions of the two short cardboard sheets SS that are continuously conveyed. Adjust the cutting depth. For example, in FIG. 11, short corrugated cardboard sheets SS2-1 and SS1-1 are two short corrugated cardboard sheets that are continuously conveyed, and grooving at the front end of the short corrugated cardboard sheet SS1-1. The FS1 is formed by the first fixed blade 612 of the upper first slotter 610, and the groove FS2 at the front end portion of the short cardboard sheet SS2-1 is formed by the second fixed blade 622 of the upper second slotter 620. . When the depth of the grooving FS1 is shallow, that is, when the length in the left-right direction in FIG. 11 is short, this shallow grooving depth means that the rotational phase of the first fixed blade 612 is the first supply claw portion 218A. This is caused by advancing with respect to the feeding operation by. In order to eliminate the fact that the grooving depth becomes shallow, the user manually operates the differential adjustment motor of the differential positioning mechanism connected to the first slotter shaft 615 of the upper first slotter 610, The rotational phase of one fixed blade 612 is adjusted by being delayed. When the grooving depth becomes deep, the user advances and adjusts the rotational phase of the first fixed blade 612. Also for the second fixed blade 622 of the upper second slotter 620, the user manually operates the differential adjustment motor of the differential positioning mechanism connected to the second slotter shaft 625 of the upper second slotter 620, 2 Adjust the rotational phase of the fixed blade 622 by advancing or delaying.

  When the depth of grooving formed by the first moving blade 613 and the second moving blade 623 deviates from the predetermined depth in a state where the rotational phases of the first fixed blade 612 and the second fixed blade 622 are adjusted. The user uses the operation panel 1130 to set the manual mode in which the movable blade phase adjusting mechanism of the first and second slotter units 61 and 62 is operated according to the manual operation. In the manual mode setting state, the user manually drives the phase adjustment motor of the movable blade phase adjustment mechanism to adjust the rotational phase of the movable blade. For example, in FIG. 11, when the depth of the grooving BS2 at the rear end portion of the short corrugated cardboard sheet SS2-1 is shallow, the grooving depth at the rear end portion is reduced. This occurs because the rotational phase is too far from the rotational phase of the second fixed blade 622. In order to eliminate the shallow grooving depth, the user manually drives the phase adjustment motor 643 to advance the rotational phase of the second moving blade 623, thereby moving the second moving blade 623 to the second fixed blade. Approach 622. When the grooving depth becomes deep, the user drives the phase adjustment motor 643 by manual operation and adjusts the rotational phase of the second movable blade 623 by delaying it. The user also adjusts the second moving blade 613 of the upper first slotter 610 by manually operating the phase adjustment motor of the first stocker unit 61 to advance or delay the rotational phase of the first moving blade 613. To do.

(Other timing adjustment operations)
The punching operation by the punching dies 73 and 74 of the die cutter device 7 needs to be synchronized with the supply operation by the first and second supply claws of the supply device 2. Regarding the adjustment of the rotational phase of the die cylinder 70, the user manually operates the differential adjustment motor of the differential positioning mechanism connected to the die cylinder 70 in the same manner as the operation of adjusting the rotational phase of the fixed blades of the upper slotters 610 and 620. The rotational phase of the die cylinder 70 is synchronized with the supply operation by operating. Further, regarding the adjustment of the rotational phase between the punching die 73 and the punching die 74, a configuration similar to the configuration shown in FIG. 7 for adjusting the rotational phase of the first and second printing plates 411 and 412 is adopted. Thus, the user can adjust the rotational phase between the dies 73 and 74 manually.

(Conveying operation of short cardboard sheets)
After the timing adjustment operation described above is completed, a full-scale processing operation of the short cardboard sheet SS is started. The subordinate management measure 1100 drives the main drive motor 8 to rotate at a constant speed in accordance with the speed command stored in the work memory 1120. The conveying device 3 rotates a number of conveying rollers 301, 311, 321 of the printing conveying unit 30, the cleaner conveying unit 31, and the slotter conveying unit 32 by driving the main drive motor 8, and the suction blower 303 and the like. The suction blower of each conveyance unit is operated. As a result, the transport device 3 can be transported at a constant transport speed while attracting the short cardboard sheet SS to the transport roller.

(Short-size cardboard sheet supply operation)
The supply device 2 drives the suction blower 25 by rotating the pair of feed rolls 22 </ b> A and 22 </ b> B at a speed synchronized with a constant transport speed of the transport device 3 by driving the main drive motor 8. The lower management apparatus 1100 calculates a speed command that commands the rotation speeds of the first and second drive motors 219 and 225 based on the speed command of the main drive motor 8. The subordinate management device 1100 rotates and drives the first and second drive motors 219 and 225 at a speed synchronized with a constant speed of the main drive motor 8 in accordance with the calculated speed command. The first and second belt kicker groups 211 and 212 are operated.

  Immediately before the supply claw portion of each belt kicker assembly comes into contact with the rear end portion (the right end portion in FIG. 11) of the short corrugated cardboard sheet SS, the great 203 of the hopper 20 descends below the paper feed table 23, and the suction blower 25 sucks the shortest corrugated cardboard sheet SS in the lowermost layer in the hopper 20 downward. In this state, the supply claw is brought into contact with the shortest corrugated cardboard sheet SS at the lowermost layer and pushed out in the supply direction FD, and the front end of the short corrugated cardboard sheet SS is fed between the pair of feed rolls 22A and 22B. . FIG. 11 shows a state in which the front end portion of the short cardboard sheet SS1-3 is fed between the feed rolls 22A and 22B by the first supply claw portions 218A to 218E. In FIG. 11, only the first supply claw portion 218A and the second supply claw portion 223A are shown for convenience of explanation.

  When the first supply claw portion 218A starts the push-out operation, the great 203 rises upward from the paper feed table 23 and lifts the rear end portion of the short cardboard sheet SS in the hopper 20. Thereby, the first supply claw portion 218A can smoothly perform the extrusion operation without being obstructed by the short cardboard sheet SS in the hopper 20. In addition, even after the first supply claw portion 218A finishes the push-out operation and moves downward from the paper feed table 23, the second supply claw portion 223A is until just before contacting the next short cardboard sheet SS. The Great 203 maintains the lifted state of the short cardboard sheet SS. Thus, before the second supply claw portion 223A comes into contact with the short cardboard sheet SS, the short cardboard sheet SS is inadvertently pulled out from the hopper 20 due to contact friction with the endless belts 217A and 222A. Can be prevented.

  Since the belt kicker mechanism 21 of the present embodiment includes the first and second supply claw portions 218A and 223A, the supply claw portion can be driven at a relatively low speed synchronized with the conveyance speed of the conveyance device 3, Damage to the rear end of the short cardboard sheet SS can be suppressed. The belt kicker mechanism 21 can continuously supply two short cardboard sheets SS by the first and second supply claws 218A and 223A while the printing cylinder 40 makes one rotation. Further, in the present embodiment, the first and second drive motors 219 and 225 are driven independently from the main drive motor 8, so that a rotating body for processing such as the print cylinder 40 of the printing apparatus 4 is When the main drive motor 8 is idling without being processed, the first and second supply claws are supplied with the two drive motors 219 and 225 after supplying two predetermined short cardboard sheets SS. The supply operation can be appropriately stopped by stopping the operation. In the conventional device in which the supply claw is driven by the main drive motor, the supply claw is continuously driven during the idling of the processing rotor, so that the supply claw is the lower surface of the corrugated cardboard sheet in the hopper. There is a problem that the cardboard sheet is damaged due to contact with the cardboard or the cardboard sheet is inadvertently pushed out of the hopper. However, these problems are solved by the independent driving of the supply claw portion in this embodiment.

(Printing operation of short cardboard sheets)
The printing device 4 rotates the printing cylinder 40 and the press roll 43 at a constant speed synchronized with the conveyance speed by driving the main drive motor 8. As the printing cylinder 40 rotates, the ink application device 42 applies ink to the first and second printing plates 411 and 412. FIG. 11 shows a state before the second printing plate 412 rotates downward and prints on the short cardboard sheets SS2-3 fed out by the feed rolls 22A and 22B. The short cardboard sheet SS1-2 is a cardboard sheet conveyed prior to the short cardboard sheet SS2-3, and predetermined printing is performed on the short cardboard sheet SS1-2 by the first printing plate 411. Are performed at two printing positions P1-2.

  In the present embodiment, when processing is performed on the short cardboard sheet SS, the two short cardboard sheets SS2-2 and SS1-2 are the first of the belt kicker mechanism 21 while the printing cylinder 40 rotates once. And two short cardboard sheets SS2 that are supplied by the second supply claws 218A and 223A, respectively, within a range of a circumferential distance CL in the conveying direction corresponding to the circumferential length of the outer peripheral surface of the printing cylinder 40. -2, SS1-2 are continuously located. The second and first printing plates 412 and 411 perform predetermined printing on the short cardboard sheets SS2-2 and SS1-2 that are continuously conveyed during one rotation of the printing cylinder 40, respectively. As a result, printing is performed on two short cardboard sheets for each rotation of the printing cylinder 40, and the printing efficiency (number of printed sheets per unit time) is improved to twice that of the conventional apparatus. Further, the printing cylinder 40 does not need to rotate at a high speed in order to increase printing efficiency, and may be rotated at a relatively low speed as in the conventional apparatus. Therefore, a thread-like shape generated between the printing plate and the cardboard sheet is required. The ink is prevented from bursting and splashing around, and high-quality printing is performed.

(Rule drawing of short cardboard sheet)
The creaser device 5 rotates the upper ruled line roll 50 and the lower ruled line roll 51 at a constant speed synchronized with the conveying speed by driving the main drive motor 8. Along with the rotation of the upper ruled line roll 50, a ruled line parallel to the conveying direction is given to the short cardboard sheet SS. FIG. 11 shows a state after the upper ruled line roll 50 performs ruled line drawing on the front end of the short cardboard sheet SS2-2.

(Slotting operation for short cardboard sheets)
The slotter device 6 rotates the upper first slotter 610 and the lower first slotter 611 of the first slotter unit 61 at a constant speed synchronized with the conveying speed by driving the main drive motor 8 and also the second slotter The upper second slotter 620 and the lower second slotter 621 of the unit 62 are rotated. In the present embodiment, each of the first and second slotter units 61 and 62 includes three slotter sets for grooving and one slotter set for forming a joint. Three grooves and one seam are formed at the front end and the rear end of the corrugated cardboard sheet SS. FIG. 11 shows a state after the first fixed blade 612 performs grooving FS1 on the front end portion of the short cardboard sheet SS1-1. When the upper first slotter 610 further rotates from this state, the first moving blade 613 performs grooving BS1 at the rear end portion of the short corrugated cardboard sheet SS1-1. Further, in FIG. 11, the second fixed blade 622 performs grooving FS2 on the front end portion of the short cardboard sheet SS2-1 conveyed in advance of the short cardboard sheet SS1-1, and the second movable blade 623 shows a state immediately before the grooving BS2 is performed on the rear end portion of the short cardboard sheet SS2-1.

  Each of the first and second slotter units 61 and 62 performs grooving at the front end portion and the rear end portion of the short cardboard sheet SS that is continuously conveyed, but the first slotter unit 61 The short slotted cardboard sheet SS supplied by the first supply claw portion 218A is grooved, and the second slotter unit 62 grooves the short cardboard sheet SS supplied by the second supply claw portion 223A. I do. Thus, the first and second slotter units 61 and 62 operate in synchronization with the first and second supply claws 218A and 223A, respectively.

(Punching of short cardboard sheets)
The die cutter device 7 drives the main drive motor 8 to rotate the die cylinder 70 and the anvil cylinder 71 at a constant speed synchronized with the conveyance speed. As the die cylinder 70 rotates, the pair of punching dies 73 and 74 rotate. The punching dies 73 and 74 perform punching processing on a short cardboard sheet SS that is continuously conveyed. The punching dies 73 and 74 perform the punching operation in synchronization with the supply operation of the first and second supply claws 218A and 223A.

<Processing of long cardboard sheet>
Next, the processing operation of the long cardboard sheet LS will be described with reference to FIGS. Note that the ruled line drawing operation of the long corrugated cardboard sheet LS by the creaser device 5 is the same as the processing operation of the short cardboard sheet SS, and thus the description of the ruled line drawing operation is omitted. In order to process a long cardboard sheet LS instead of the short cardboard sheet SS, as shown in FIG. 12, the back guide 202 and the great 203 are moved to the right, and the long cardboard sheet LS is moved to the hopper 20. To be loaded. Further, instead of the printing plate member 41 shown in FIG. 7, a new printing plate member 44 for printing on the long cardboard sheet LS is wound around the printing cylinder 40 as shown in FIG. The printing plate member 44 is configured by bonding one printing plate 414 on a pedestal film 413. When the printing plate member 44 is wound, the adjustment protrusion 402C is retracted from the outer peripheral surface of the printing cylinder 40 to the inside. Further, instead of the pair of punching dies 73 and 74 of the die cutter device 7, a new plate-like body to which a single die for punching the long cardboard sheet LS is attached is wound around the outer peripheral surface of the die cylinder 70. Is done. When the cardboard sheet box making machine 1 is turned on after this pre-processing preparatory work is completed, the upper management apparatus 1000 starts operating and the lower management apparatus 1100 operates according to the control program in the program memory 1110. Start. Along with the operations of the upper management apparatus 1000 and the lower management apparatus 1100, the lower management apparatus 1100 temporarily stores the speed command and the operation command in the work memory 1120 in the same manner as the processing operation of the short cardboard sheet SS.

(Timing adjustment operation)
The timing of the supply operation of the supply device 2 and the processing operation of each processing device such as the printing device 4 needs to be adjusted so that the long cardboard sheet LS is processed. For this purpose, the user uses the operation panel 1130 to connect the first and second drive motors 219 and 225, the phase adjustment motor of the first slotter unit 61, and the phase adjustment motor 643 of the second slotter unit 62. Set the manual mode to rotate according to manual operation. In the setting state of the manual mode, the user drives each of the first and second drive motors 219 and 225 according to the manual operation, and as shown in FIG. 12, the first supply claw portions 218A to 218E and the second The supply claw portions are moved and temporarily positioned so that the supply claw portions 223A to 223D are arranged in a straight line. Further, the user drives each of the phase adjustment motors according to a manual operation, and the first moving blade 613 and the second moving blade 623 are respectively moved to the first fixed blade 612 and the second fixed blade 622 as shown in FIG. Each moving blade is moved to a contact position and temporarily positioned. Hereinafter, only the first supply claw portion 218A will be described as a representative example of a large number of supply claw portions in a state where the first and second supply claw portions are arranged in a straight line.

(Print timing adjustment operation)
The user uses the operation panel 1130 to set a test operation mode in which the corrugated cardboard box making machine 1 is subjected to a test operation in order to check whether the timing adjustment is appropriate. In the test operation mode setting state, the lower stage management device 1100 drives the main drive motor 8 at a speed synchronized with the speed of the main drive motor 8 in the same manner as the timing adjustment operation for the short cardboard sheet SS. The first and second drive motors 219 and 225 are driven, and the corrugated board box making machine 1 is experimentally operated. By this test operation, processing such as printing and grooving is performed on the conveyed long cardboard sheet LS. A detailed description will be given later of each operation of supplying, conveying, printing, and grooving the long corrugated cardboard sheet SS.

  Printing in the test operation is performed at the printing position PL-3 on the long corrugated cardboard sheet LS-3 by the printing plate 414, and the printing position PL-3 is shifted from the predetermined position to the left side in FIG. The shift to the left side is caused by the supply operation being delayed with respect to the print operation. In order to eliminate the shift to the left side, the user rotates the first and second drive motors 219 and 225 in the forward direction manually in the manual mode so that the supply timing is advanced so that the supply timing is advanced. Are positioned in the paper feeding direction FD. When the printing position PL-3 is shifted to the right side from the predetermined position in FIG. 12, the user rotates the first and second drive motors 219 and 225 in the reverse direction by manual operation so that the supply timing is delayed. The arrangement position of the supply claw portion 218A is delayed and positioned in the paper feeding direction FD.

(Grooving timing adjustment operation)
Groove cutting is performed by the fixed blade 612 and the movable blade 613 of the first slotter unit 61 at the front end portion of the long cardboard sheet LS, and groove cutting is performed at the rear end portion of the fixed blade 622 of the second slotter unit 62. And the moving blade 623. When the depth of grooving at the front end portion (the length in the left-right direction in FIG. 12) deviates from a predetermined depth, this deviation in grooving depth at the front end portion is caused by the fixed blade on the upper first slotter 610. This occurs because the rotational phases of 612 and moving blade 613 are not synchronized with the supply operation by supply claw 218A. In order to eliminate the shift in the groove depth at the front end, the user manually operates the differential adjustment motor of the differential positioning mechanism connected to the first slotter shaft 615 of the upper first slotter 610 by the operation panel 1130. Set the manual mode to operate according to the operation. In this manual mode setting state, the user operates the differential adjustment motor of the differential positioning mechanism according to a manual operation to adjust the grooving depth of the front end portion of the long cardboard sheet LS being conveyed. For example, in FIG. 12, the grooving FLS at the front end of the long cardboard sheet LS-1 is formed by the fixed blade 612 and the movable blade 613 of the upper first slotter 610. When the depth of the grooving FLS is shallow, that is, when the length in the left-right direction in FIG. 12 is short, this grooving depth becomes shallow because the rotational phase of the fixed blade 612 and the movement is determined by the supply claw portion 218A. This is caused by progress toward the feeding operation. In order to eliminate the fact that the groove depth becomes shallow, the user manually operates the differential adjustment motor of the differential positioning mechanism connected to the first slotter shaft 615 of the upper first slotter 610 to fix it. The rotational phase of the blade 612 and the moving blade 613 is adjusted by delaying. When the grooving depth becomes deep, the user advances and adjusts the rotational phases of the fixed blade 612 and the movable blade 613. In addition, even when the grooving depth shift at the rear end portion of the long corrugated cardboard sheet LS, the user can remove the grooving depth shift at the front end portion as well as the upper second slotter 620. The differential adjustment motor of the differential positioning mechanism connected to the second slotter shaft 625 is manually operated to adjust the rotational phase of the fixed blade 622 and the movable blade 623 by advancing or delaying.

(Other timing adjustment operations)
The punching operation by the single punching die of the die cutter device 7 needs to be synchronized with the supply operation by the first and second supply claws of the supply device 2. Regarding the adjustment of the rotational phase of the die cylinder 70, the differential adjustment of the differential positioning mechanism connected to the die cylinder 70 by the user is performed in the same manner as the operation of adjusting the rotational phases of the fixed blade and the movable blade of the upper slotters 610 and 620 The motor is operated manually to synchronize the rotational phase of the die cylinder 70 with the supply operation.

(Conveying long cardboard sheets)
After the timing adjustment operation described above is completed, a full-scale processing operation of the long cardboard sheet LS is started. The subordinate management measure 1100 drives the main drive motor 8 to rotate at a constant speed in accordance with the speed command stored in the work memory 1120. The conveyance device 3 rotates a large number of conveyance rollers 301, 311, and 321 by driving the main drive motor 8 and operates a suction blower of each conveyance unit such as the suction blower 303. As a result, the conveying device 3 is in a state in which the long cardboard sheet LS can be conveyed at a constant conveying speed while being attracted to the conveying roller.

(Long cardboard sheet supply operation)
The supply device 2 drives the suction blower 25 by rotating the pair of feed rolls 22 </ b> A and 22 </ b> B at a speed synchronized with a constant transport speed of the transport device 3 by driving the main drive motor 8. Since the lower management apparatus 1100 rotationally drives the first and second drive motors 219 and 225 at a speed synchronized with a constant speed of the main drive motor 8, the supply apparatus 2 includes the first and second belt kicker sets. All of the supply claws 211 and 212 are operated as a unit.

  Immediately before all the supply claw portions of the two belt kicker sets come into contact with the rear end portion (the right end portion in FIG. 12) of the long corrugated cardboard sheet LS, the great 203 of the hopper 20 descends below the paper feed table 23. The suction blower 25 sucks the bottom long cardboard sheet LS in the hopper 20 downward. In this state, the supply claw portion 218A contacts the bottom long cardboard sheet LS and pushes in the supply direction FD, and the front end of the long cardboard sheet LS is fed between the pair of feed rolls 22A and 22B. It is. FIG. 12 shows a state in which the front end portion of the long corrugated cardboard sheet LS-4 is fed between the feed rolls 22A and 22B by the supply claw portion 218A.

  When the supply claw portion 218A starts the pushing operation, the great 203 rises upward from the paper feed table 23 and lifts the rear end portion of the long cardboard sheet LS in the hopper 20. Further, even after the supply claw portion 218A finishes the pushing operation and moves downward from the paper feed table 23, the great 203 remains long until the supply claw portion 218A comes into contact with the next long cardboard sheet LS again. The lifted state of the corrugated cardboard sheet LS is maintained. In the present embodiment, since the first and second drive motors 219 and 225 are driven independently from the main drive motor 8, supply is performed when a rotating body for processing such as the printing cylinder 40 is idling. The claw portion 218A can appropriately stop the supply operation by stopping both the drive motors 219 and 225 after supplying one long cardboard sheet LS.

(Long cardboard sheet printing operation)
The printing device 4 rotates the printing cylinder 40 and the press roll 43 at a constant speed synchronized with the conveyance speed by driving the main drive motor 8. As the printing cylinder 40 rotates, the ink application device 42 applies ink to the printing plate 414. FIG. 12 shows a state after the printing plate 414 performs printing at two printing positions PL-3 on the long cardboard sheet LS-3 fed by the feed rolls 22A and 22B.

  In the present embodiment, when a long cardboard sheet LS is processed, one long cardboard sheet LS is supplied by the supply claw portion 218A of the belt kicker mechanism 21 while the printing cylinder 40 rotates once. One long corrugated cardboard sheet LS is located within a range of a circumferential distance CL in the conveying direction corresponding to the circumferential length of the outer peripheral surface of the printing cylinder 40.

(Groove operation of long cardboard sheet)
The slotter device 6 rotates the upper first slotter 610 and the lower first slotter 611 of the first slotter unit 61 at a constant speed synchronized with the conveying speed by driving the main drive motor 8 and also the second slotter The upper second slotter 620 and the lower second slotter 621 of the unit 62 are rotated. FIG. 12 shows a state after the fixed blade 612 and the movable blade 613 of the first slotter unit 61 have grooved FLS at the front end of the long cardboard sheet LS-2. From this state, when the long cardboard sheet LS-2 is further conveyed, the fixed blade 622 and the movable blade 623 of the second slotter unit 62 grooving the rear end portion of the long cardboard sheet LS-2. Do. The long corrugated cardboard sheet LS-1 is a corrugated cardboard sheet conveyed prior to the long corrugated cardboard sheet LS-2, and the grooving FLS at the front end and the grooving BLS at the rear end have already been performed. ing. The grooving operation at the front end portion and the rear end portion of the long cardboard sheet LS is performed in synchronization with the supply operation of the supply claw portion 218A of the belt kicker mechanism 21.

(Punching of long cardboard sheets)
The die cutter device 7 drives the main drive motor 8 to rotate the die cylinder 70 and the anvil cylinder 71 at a constant speed synchronized with the conveyance speed. Along with the rotation of the die cylinder 70, a single punching die rotates and punches a long cardboard sheet LS to be conveyed. The single punching die performs a punching operation in synchronization with the supply operation of the supply claw portion 218A of the belt kicker mechanism 21.

  In the present embodiment, the first supply claw portions 218A to 218E and the second supply claw portions 223A to 223D supply two short cardboard sheets SS while the printing cylinder 40 makes one rotation. A state in which the arrangement positions are different (two-row arrangement state shown in FIG. 11) and a state in which the arrangement positions coincide with each other in order to supply one long cardboard sheet LS (one-row arrangement state shown in FIG. 12) It is switched to either. Each of the first and second slotter units 61, 62 is in a state in which the moving blade is separated from the fixed blade in order to groov the front end portion and the rear end portion of the short cardboard sheet SS (see FIG. 11). And a state in which the moving blade is in contact with the fixed blade in order to groov one end portion of the front end portion and the rear end portion of the long corrugated cardboard sheet LS (integral arrangement state shown in FIG. 12). It is switched to either. With this switchable configuration, one corrugated sheet box making machine can process both the short corrugated cardboard sheet SS and the long corrugated cardboard sheet LS.

[Second Embodiment]
A second embodiment in which the present invention is applied to a corrugated cardboard box making machine that performs processing such as printing and grooving on the corrugated cardboard sheet will be described below with reference mainly to FIG. The corrugated cardboard box making machine 1-1 of the second embodiment supplies two short corrugated cardboard sheets during one rotation of the printing cylinder, similarly to the corrugated cardboard box making machine 1 of the first embodiment. However, since the configuration of the supply device and the printing device is different from that of the first embodiment, a description will be given of the transport device, the creaser device, the slotter device, and the die cutter device that have the same configuration. Omitted. FIG. 14 is a front view illustrating a schematic configuration of the supply device 2-1 and the printing device 4-1 according to the second embodiment. In the configuration of the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals.

<Overall configuration>
FIG. 14 is a front view showing only the configuration of the supply device 2-1 and the printing device 4-1 of the second embodiment corresponding to the supply device 2 and the printing device 4 in the first embodiment shown in FIG. . Also in the second embodiment, the transport device 3, the cleaner device 5, the slotter device 6, and the die cutter device 7 of the first embodiment are arranged along the transport path PL in the subsequent stage of the printing device 4-1, and the first embodiment. Similar to the embodiment, printing, ruled line drawing, grooving and punching are performed on a short cardboard sheet SS.

<Configuration of supply device>
In FIG. 14, the supply device 2-1 includes a hopper 20, a belt kicker mechanism 21-1, and a pair of feed rolls 22A and 22B. Since the hopper 20 and the feed rolls 22A and 22B have the same configuration as that of the first embodiment, description thereof will be omitted, and only the belt kicker mechanism 21-1 will be described below.

(Configuration of belt kicker mechanism)
The belt kicker mechanism 21-1 has a suction assist kicker type configuration, is arranged below the paper feed table 23, and the shortest corrugated cardboard sheet SS accommodated in the hopper 20 is placed in the paper feed direction FD. Extrude. FIG. 15 is a plan view showing the belt kicker mechanism 21-1 from above. As shown in FIG. 15, the belt kicker mechanism 21-1 includes nine belt kickers 211A-1 to 211I-1 in a direction orthogonal to the paper feeding direction FD, that is, in the front-rear direction.

  Since the nine belt kickers 211A-1 to 211I-1 have the same configuration, the belt kicker 211A-1 will be described with reference to FIGS. In FIG. 14, a belt kicker 211A-1 is wound around both pulleys, a drive pulley 214A-1 fixed to the drive shaft 213-1, a driven pulley 216A-1 rotatably supported by a support shaft 215. An endless belt 217A-1. The drive shaft 213-1 and the support shaft 215 are arranged to extend in a direction orthogonal to the paper feeding direction FD. The supply claw portion 218A-1 protrudes from the endless belt 217A-1 so as to abut the rear end portion of the shortest corrugated cardboard sheet SS accommodated in the hopper 20. The drive shaft 213-1 is connected to an auxiliary drive motor 219-1 through a known power transmission mechanism such as a gear train, and the rotation of the drive motor 219-1 causes the drive pulley 214A-1 to move in the direction of the arrow shown in FIG. Rotate to Other belt kickers 211B-1 to 211I-1 also have supply claw portions 218B-1 to 218I-1 as shown in FIG. 14 shows only supply claw part 218A-1 for convenience.

  All of the nine supply claws 218A-1 to 218I-1 are arranged in a line in a direction orthogonal to the paper feed direction FD, as shown in FIG. Since the supply claw portions 218A-1 to 218I-1 arranged in a line abut against the rear end portion of the short cardboard sheet SS, almost the entire area of the rear end portion of the short cardboard sheet SS is evenly distributed. It is pressed and damage at the rear end is suppressed. The supply device 2-1 of the present embodiment is an example of the supply device of the present invention, and the supply claw portions 218A-1 to 218I-1 are examples of the supply claw portion of the present invention.

<Configuration of printing device>
In FIG. 14, the printing apparatus 4-1 includes a first printing mechanism 4-1A and a second printing mechanism 4-1B along the transport path PL. The first printing mechanism 4-1A includes a first printing cylinder 40-1A, a first printing plate member 41-1A for printing on a short cardboard sheet SS, and a first ink application device 42A. And the first press roll 43A. Similarly, the second printing mechanism 4-1B includes a second printing cylinder 40-1B, a second printing plate member 41-1B for printing on a short cardboard sheet SS, and a second ink application. It consists of a device 42B and a second press roll 43B. Since the first and second printing mechanisms 4-1A and 4-1B have the same configuration, only the configuration of the first printing mechanism 4-1A will be described below. The ink application device 42A and the press roll 43A have the same configuration as that of the first embodiment, and thus the description thereof is omitted.

(Configuration of printing cylinder)
The printing cylinder 40-1A of the first printing mechanism 4-1A is rotatably supported by the frame of the printing apparatus 4-1, and is connected to the main driving motor 8 via a known power transmission mechanism, and the main driving motor. Rotation of 8 rotates in the direction of the arrow shown in FIG. The printing cylinder 40-1A has a fixed groove 400 and a winding mechanism 401, but does not have a printing phase adjustment mechanism 402, like the printing cylinder 40 of the first embodiment shown in FIG.

  Since the printing position on the short corrugated cardboard sheet SS conveyed continuously is adjusted, the relative rotational phase of the second printing cylinder 40-1B with respect to the first printing cylinder 40-1A is adjusted. There is a need. To this end, the relative rotational phase is rotationally driven by the differential adjustment motor of the above-described differential positioning mechanism connected to the rotation shafts of the first and second printing cylinders 40-1A and 40-1B, respectively. It is adjusted by.

(Configuration of the printing plate)
The first printing plate member 41-1A is wound around the outer periphery of the printing cylinder 40-1A. The first printing plate member 41-1A is configured by bonding a first printing plate 411-1 on a base film made of a synthetic resin. One end of the first printing plate member 41-1A is fixed to the printing cylinder 40-1A by being fitted into the fixing groove 400, and the other end is wound by the winding mechanism 401. Attached to the printing cylinder 40-1A. The printing plate member 41-1A is replaceably attached to the printing cylinder 40-1A by the fixing groove 400 and the winding mechanism 401. The second printing plate member 41-1B is configured in the same manner as the first printing plate member 41-1A, and includes a second printing plate 412-1. In the present embodiment, the same printing pattern is formed on each of the printing plates 411-1 and 412-1 and the same printing content is continuously printed on two short cardboard sheets SS. The printing apparatus 4-1 of this embodiment is an example of the printing apparatus of the present invention, and the first and second printing plates 411-1 and 412-1 are examples of the printing plate of the present invention.

<Electrical configuration>
The electrical configuration of the corrugated cardboard box making machine 1-1 of the second embodiment will be described below with reference to FIG. The second embodiment is provided with an auxiliary drive motor 219-1 for driving the belt kicker mechanism 21-1 instead of the first and second drive motors 219 and 225 in the first embodiment shown in FIG. Since it is the same structure as 1st Embodiment, about the same component, the same number is attached | subjected and description is abbreviate | omitted.

  In the second embodiment, the operation panel 1130 connected to the lower management apparatus 1100 cannot input and set adjustment information for adjusting the relative positional relationship between the arrangement positions of the plurality of supply claws, Information such as adjustment information for adjusting the depth of grooving applied to the front end portion and the rear end portion of the short cardboard sheet SS by adjusting the rotational phase of the movable blades 613, 623 with respect to the fixed blades 612, 622 Can be set.

  The lower management apparatus 1100 controls the rotational speeds of the main drive motor 8 and the auxiliary drive motor 219-1 according to the control command information from the upper management apparatus 1000 and the adjustment information from the operation panel 1130, and also the phase adjustment motor 643. Controls rotation and stop of the machine. The auxiliary drive motor 219-1 is connected to the belt kicker mechanism 21-1 of the supply device 2-1 through a known power transmission mechanism. The phase adjustment motor 643 is connected to the differential device 644 of the second slotter unit 62 in the slotter device 6. Similarly, the phase adjustment motor of the first slotter unit 61 is connected to the differential device of the corresponding moving blade phase adjustment mechanism.

  In the second embodiment, since the supply claw portions 218A-1 to 218I-1 are arranged in a row, the auxiliary drive motor is different from the first embodiment provided with two sets of supply claw portions having different arrangement positions. The rotational speed of 219-1 is set to a speed that is approximately twice the rotational speed of the first drive motor 219 in the first embodiment. The rotational speed of the auxiliary drive motor 219-1 is calculated by the lower management apparatus 1100 based on the speed command of the main drive motor 8. By setting the speed of the auxiliary drive motor 219-1, the supply claw portions 218A-1 to 218I-1 are arranged so that two short cardboard sheets are printed while each of the printing cylinders 40-1A and 40-1B makes one rotation. The supply operation of two cycles can be performed so as to supply SS continuously.

<< Operation and Action of Second Embodiment >>
The operation and action of the corrugated cardboard box making machine 1-1 of the second embodiment will be described below with reference to FIG. In order to process the short cardboard sheet SS, the short cardboard sheet SS is stacked on the hopper 20 as shown in FIG. The first and second printing plate members 41-1A and 41-1B are wound around the outer circumferences of the printing cylinders 40-1A and 40-1B, respectively. After the pre-processing preparatory work is completed, when the cardboard sheet box making machine 1-1 is powered on, the upper management apparatus 1000 and the lower management apparatus 1100 start operating as in the first embodiment. The subordinate management device 1100 temporarily stores in the work memory 1120 a speed command for the main drive motor 8 and an operation command for controlling the operation of the plurality of processing devices.

(Timing adjustment operation)
The timing of the supply operation of the supply device 2-1 and the processing operation of each processing device such as the printing device 4-1 needs to be adjusted so that the short cardboard sheet SS is processed. For this purpose, the user rotates and drives the auxiliary drive motor 219-1 and the phase adjustment motor of the first slotter unit 61 and the phase adjustment motor 643 of the second slotter unit 62 according to a manual operation using the operation panel 1130. Set the manual mode. In the manual mode setting state, the user drives the auxiliary drive motor 219-1 according to a manual operation, and temporarily positions the array positions of the supply claw portions 218A-1 to 218I-1 in one row. In addition, the user drives each of the phase adjustment motors according to a manual operation, and sets the rotation phase of the first moving blade 613 relative to the first fixed blade 612 and the rotation phase of the second moving blade 623 relative to the second fixed blade 622. Position temporarily. In the present embodiment, the supply operation by the one row of supply claw portions 218A-1 to 218I-1 is synchronized with each printing operation by the first and second printing plates 411-1 and 412-1 and the first fixed blade. It is necessary to synchronize with the grooving operation by 612 and the first moving blade 613 and the grooving operation by the second fixed blade 622 and the second moving blade 623. Hereinafter, as a representative example of a large number of supply claw parts, only the supply claw part 218A-1 is described for convenience of explanation.

(Print timing adjustment operation)
The user uses the operation panel 1130 to set a test operation mode in which the cardboard sheet box making machine 1-1 is subjected to a test operation in order to check whether the timing adjustment is appropriate. In the test operation mode setting state, the lower stage management apparatus 1100 drives the main drive motor 8 according to the speed command, and drives the auxiliary drive motor 219-1 at a speed approximately twice the speed of the first drive motor 219. Then, the corrugated board box making machine 1-1 is experimentally operated according to the operation command stored in the work memory 1120. By this test operation, processing such as printing and grooving is performed on the conveyed short cardboard sheet SS.

  Printing in the test operation is performed at the printing position P1-1 on the short cardboard sheet SS1-1 by the first printing plate 411-1 in FIG. 17, and the printing position P1-1 is shifted from the predetermined position. In this case, the deviation occurs because the supply operation by the supply claw portion 218A-1 is advanced or delayed with respect to the print operation by the first printing plate 411-1. In order to eliminate this deviation, the user manually rotates the auxiliary drive motor 219-1 in the manual mode to feed the arrangement position of the supply claw portion 218A-1 so that the supply timing is delayed or advanced. Retract or advance in direction FD to position.

  With the printing position P1-1 by the first printing plate 411-1 positioned at a predetermined position, the printing position P2-1 on the short cardboard sheet SS2-1 by the second printing plate 412-1 is When it deviates from the predetermined position, this deviation occurs because the supply operation by the supply claw 218A-1 is advanced or delayed with respect to the printing operation by the second printing plate 412-1. In order to eliminate this shift, the user operates the manual mode in which the differential adjustment motor of the differential positioning mechanism connected to the rotation shaft of the second printing cylinder 40-1B is operated according to the manual operation by the operation panel 1130. Set. In this manual mode setting state, the user manually operates the differential adjustment motor of the differential positioning mechanism so that the printing operation by the second printing plate 412-1 is delayed or accelerated with respect to the supply operation. In addition, the rotational phase of the second printing cylinder 40-1B with respect to the first printing cylinder 40-1A is adjusted. As a result, the printing positions P1-1 and P2-1 on the two short cardboard sheets SS1-1 and SS2-1 that are continuously supplied are adjusted to be a predetermined position.

(Short-size cardboard sheet supply operation)
The supply device 2-1 drives the suction blower 25 by rotating the pair of feed rolls 22 </ b> A and 22 </ b> B at a speed synchronized with a constant transport speed of the transport device 3 by driving the main drive motor 8. Since the lower management apparatus 1100 rotates and drives the auxiliary drive motor 219-1 at a speed twice that of the first drive motor 219, the supply apparatus 2-1 has all the supply claws of the belt kicker mechanism 21-1. The parts 218A-1 to 218I-1 are integrally operated at a relatively high speed.

  Immediately before the supply claw portion 218A-1 comes into contact with the rear end portion (the right end portion in FIG. 17) of the short corrugated cardboard sheet SS, the great 203 of the hopper 20 descends below the paper feed table 23, and the suction blower 25 However, the shortest corrugated cardboard sheet SS in the lowermost layer in the hopper 20 is sucked downward. In this state, the supply claw portion 218A-1 shown in FIG. 17 abuts on the shortest corrugated cardboard sheet SS in the lowermost layer and pushes it out in the paper feeding direction FD, and the front end of the short corrugated cardboard sheet SS is a pair of feed rolls. It is sent between 22A and 22B.

  When the supply claw portion 218A-1 starts the pushing operation, the great 203 rises upward from the paper feed table 23 and lifts the rear end portion of the short cardboard sheet SS in the hopper 20. Even after the supply claw portion 218A-1 finishes the pushing operation and moves downward from the paper feed table 23, the great 203 remains until just before the supply claw portion 218A-1 comes into contact with the next short cardboard sheet SS. The lifted state of the short cardboard sheet SS is maintained. Thereby, before the supply claw portion 218A-1 contacts the short cardboard sheet SS, the short cardboard sheet SS is inadvertently pulled out from the hopper 20 due to contact friction with the endless belt 217A-1. Can be prevented.

  Since the belt kicker mechanism 21-1 of this embodiment performs the supply operation of two cycles while each of the first and second printing cylinders 40-1A and 40-1B makes one rotation, each supply operation Each of the two continuous short cardboard sheets can be supplied to each printing cylinder. That is, as in the first embodiment shown in FIG. 11, the circumferential length CL in the conveying direction corresponding to the circumferential length of the outer circumference of each of the first and second printing cylinders 40-1A and 40-1B. The belt kicker mechanism 21-1 supplies the short cardboard sheet SS so that the two short cardboard sheets SS1-1 and SS2-1 are continuously located within the range, and the preceding short cardboard sheet SS SS1-1 is supplied for printing by the first printing plate 411-1 and the subsequent short cardboard sheet SS2-1 is supplied for printing by the second printing plate 412-1.

(Printing operation of short cardboard sheets)
The printing device 4-1 rotates the printing cylinders 40-1 </ b> A and 40-1 </ b> B and the press rolls 43 </ b> A and 43 </ b> B at a constant speed synchronized with the conveyance speed by driving the main drive motor 8. As the printing cylinders 40-1A and 40-1B rotate, the ink application devices 42A and 42B apply ink to the first and second printing plates 411-1 and 412-1. The short cardboard sheet SS1-1 sent out in advance by the feed rolls 22A and 22B is printed at a predetermined printing position P1-1 by the first printing plate 411-1. The printed preceding short cardboard sheet SS1-1 passes through the second printing cylinder 40-1B without being printed by the second printing plate 412-1. On the other hand, the subsequent short cardboard sheet SS2-1 sent out by the feed rolls 22A and 22B passes through the first printing cylinder 40-1A without being printed by the first printing plate 411-1. The subsequent short-sized corrugated cardboard sheet SS2-1 that has passed through is printed at a predetermined printing position P2-1 by the second printing plate 412-1.

[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) In the first and second embodiments, the printing patterns of the first and second printing plates have the same contents, but the printing patterns of the first and second printing plates may be different. In this case, a configuration is adopted in which the contents of the print pattern are automatically identified and the printed short cardboard sheets SS are sorted according to the identification result.

(2) In the first and second embodiments, a belt kicker mechanism provided with a supply claw portion is used. However, this mechanism uses both a supply roller for supplying a corrugated cardboard sheet using contact friction and a suction. May be. In this case, rotation and stop of the supply roller are repeated in accordance with the supply timing of the cardboard sheet.

(3) In the first and second embodiments, the first and second drive motors 219 and 225 are driven at a constant speed synchronized with the constant speed of the main drive motor 8, and the auxiliary drive motor 219-1 is the first drive motor 219-1. The driving motors 219 and 225 and the auxiliary driving motor 219-1 may be driven at a variable speed. For example, while the supply claw is in contact with the rear end of the short corrugated cardboard sheet SS to perform the extrusion operation, the drive motor is driven at a low speed. A configuration is employed in which the drive motor is controlled at a variable speed so as to be driven at a high speed until a predetermined time before the point of contact with the rear end of the corrugated cardboard sheet SS. With this configuration, the rear end portion of the short cardboard sheet SS is suppressed from being damaged when coming into contact with the supply claw portion.

(4) In the first and second embodiments, the slotter device 6 that performs grooving with a fixed blade and a moving blade is used as the grooving device, but the die cutter device that performs grooving with a punching die is a grooving device. May be adopted.

(5) In the first and second embodiments, the slotter device 6 includes the first and second slotter units 61 and 62 arranged along the transport path PL, and the first slotter unit 61 is fixed first. The blade 612 and the first moving blade 613 perform grooving processing on the short cardboard sheet SS conveyed in advance, and the second slotter unit 62 is formed by the second fixed blade 622 and the second moving blade 623. The grooving process is performed on the short cardboard sheet SS conveyed subsequently. Instead of this configuration, a single slotter unit has an upper slotter having two sets of fixed blades and moving blades on the outer peripheral surface, and a lower slotter, and is continuous while the upper slotter makes one rotation. Alternatively, a configuration in which grooving is performed on two short corrugated cardboard sheets conveyed in this manner may be employed.

(6) In the first and second embodiments, while the printing plate 411 or the printing plate 411-1 that performs printing on each short cardboard sheet SS rotates once, the supply device 2 or the supply device 2-1 A configuration is adopted in which two short cardboard sheets SS are continuously supplied. Instead of this configuration, a configuration may be adopted in which the supply device supplies three or more short cardboard sheets while each printing plate rotates once. In this case, as an example of the supply device, a configuration including three or more sets of supply claw portions with different arrangement positions of the supply claw portions on the endless belt is adopted, or one set arranged in a line on the endless belt A configuration is adopted in which the supply claw portion is driven so as to perform the supply operation in three or more cycles while each printing plate rotates once.

1 is a front view showing an overall configuration of a corrugated cardboard box making machine according to a first embodiment of the present invention. It is a front view which shows schematic structure of the supply apparatus which concerns on 1st Embodiment. It is a top view which shows schematic structure of the belt kicker mechanism of the supply apparatus which concerns on 1st Embodiment. It is a front view which shows schematic structure of the 1st belt kicker of the supply apparatus which concerns on 1st Embodiment. It is a front view which shows schematic structure of the 2nd belt kicker of the supply apparatus which concerns on 1st Embodiment. 1 is a front view illustrating a schematic configuration of a printing apparatus according to a first embodiment. It is a front view which shows schematic structure of the printing cylinder for printing on a short cardboard sheet | seat in 1st Embodiment. It is a front view showing a schematic structure of a slotter device concerning a 1st embodiment. It is a fragmentary sectional view showing a schematic structure of a moving blade phase adjustment mechanism of a slotter device concerning a 1st embodiment. It is a block diagram which shows the electrical constitution of the corrugated cardboard box making machine concerning a 1st embodiment. It is explanatory drawing which shows the process in which a short cardboard sheet | seat is processed in 1st Embodiment. It is explanatory drawing which shows the process in which a long cardboard sheet | seat is processed in 1st Embodiment. It is a front view which shows schematic structure of the printing cylinder for printing on a long cardboard sheet | seat in 1st Embodiment. It is a front view which shows schematic structure of the supply apparatus and printing apparatus of the cardboard sheet box making machine which concern on the 2nd Embodiment of this invention. It is a top view which shows schematic structure of the belt kicker mechanism of the supply apparatus which concerns on 2nd Embodiment. It is a block diagram which shows the electric constitution of the cardboard sheet box making machine concerning a 2nd embodiment. It is explanatory drawing which shows the process in which it prints on a short cardboard sheet | seat in 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1-1 Corrugated paper box making machine 2, 2-1 Feeding device 3 Conveying device 4, 4-1 Printing device 6 Slotter device 8 Main drive motor 20 Hopper 40 Printing cylinder 40-1A First printing cylinder 40-1B Second printing cylinders 218A to 218E First supply claw portion 219 First drive motors 223A to 223D Second supply claw portion 225 Second drive motors 218A-1 to 218I-1 Supply claw portion 219-1 Auxiliary drive Motors 411, 411-1 First printing plate 412, 412-1 Second printing plate 610 Upper first slotter 612 First fixed blade 613 First moving blade 620 Upper second slotter 622 Second fixed blade 623 Second movement Blade 640 Moving blade phase adjustment mechanism SS Short corrugated cardboard sheet LS Long corrugated cardboard sheet PL Conveyance path CL Long distance

Claims (15)

A transport device for transporting the cardboard sheet at a predetermined transport speed along the transport path;
A printing apparatus provided with a plurality of printing plates arranged on the conveyance path for printing on the cardboard sheet conveyed by the conveyance apparatus and rotating at a rotation speed synchronized with the conveyance speed;
The short corrugated cardboard sheet whose length in the conveying direction of the corrugated cardboard sheet is not more than half of the circumferential length of one rotation of each of the plurality of printing plates, while each printing plate rotates once A supply device capable of supplying a plurality of sheets toward the conveyance path;
The supply device is a corrugated sheet box making machine that supplies the short cardboard sheets in association with the rotation position of the printing plates.   The corrugated board box making machine according to claim 1, wherein the printing apparatus includes a printing rotating body in which the plurality of printing plates are provided on the outer peripheral surface with different rotational phases. The transport device is configured to transport the short cardboard sheet at a constant transport speed,
The corrugated board box making machine according to claim 1 or 2, wherein each printing plate of the printing apparatus rotates at a constant rotation speed synchronized with the constant conveyance speed. The supply device includes:
A storage unit for stacking and storing a plurality of the short cardboard sheets;
The corrugated board box making machine according to any one of claims 1 to 3, further comprising a supply claw section that pushes a plurality of short cardboard sheets stored in the storage section one by one toward the transport path. The supply device includes:
5. The corrugated cardboard box making machine according to claim 4, further comprising a plurality of supply claws for performing an extruding operation of the short corrugated cardboard sheet in association with a rotational position of the plurality of printing plates.   The plurality of supply claws are arranged side by side in a direction perpendicular to the conveyance direction of the short corrugated cardboard sheet, and are arranged at different positions in the conveyance direction in relation to the rotation position of the plurality of printing plates. The corrugated board box making machine according to claim 5.   The corrugated cardboard box making machine according to claim 5 or 6, wherein at least one supply claw portion of the plurality of supply claw portions is configured such that a relative arrangement position with respect to other supply claw portions can be adjusted. .   The corrugated board box making machine according to any one of claims 1 to 7, wherein at least one printing plate of the plurality of printing plates is configured such that a relative rotation phase with respect to another printing plate can be adjusted. .   The supply device is driven by a supply drive unit that operates independently of the conveyance drive unit that drives the conveyance device, and the supply timing of the short cardboard sheets can be adjusted with respect to the rotation position of the printing plate. The corrugated board box making machine according to any one of claims 1 to 8, wherein   A grooving device provided with a plurality of grooving bodies arranged on the transport path for rotating the corrugated cardboard sheet transported by the transport device and rotating at a rotational speed synchronized with the transport speed. The corrugated board box making machine according to any one of claims 1 to 9. The grooving device has a plurality of grooving rotators arranged along the transport path,
11. The corrugated board box making machine according to claim 10, wherein each of the plurality of grooving rotary bodies is configured such that each grooving processed body is provided on an outer peripheral surface.   The corrugated cardboard sheet according to claim 10 or 11, wherein at least one grooving body of the plurality of grooving bodies is configured such that a relative rotation phase with respect to other grooving bodies can be adjusted. Box making machine. Each of the plurality of grooving bodies comprises two processing blades for grooving the front end portion and the rear end portion of each short cardboard sheet,
The corrugated board box making machine according to any one of claims 10 to 12, wherein the distance between the two processing blades is adjustable. A transport device for transporting the cardboard sheet at a predetermined transport speed along the transport path;
The first printing plate and the second printing plate that are arranged on the conveyance path for printing on the cardboard sheet conveyed by the conveyance device and rotate at a rotation speed synchronized with the conveyance speed are different from each other. A printing rotating body provided on the outer peripheral surface,
A corrugated cardboard sheet conveyed by the conveying device is disposed on the conveying path for grooving in association with the rotation position of the first printing plate, and rotates at a rotation speed synchronized with the conveyance speed. 1 grooving rotator,
A corrugated cardboard sheet transported by the transport device is disposed on the transport path to perform grooving in relation to the rotational position of the second printing plate, and rotates at a rotational speed synchronized with the transport speed. 2 grooving rotators,
A short cardboard sheet whose length in the conveyance direction of the cardboard sheet is half or less of the circumferential length of the outer peripheral surface of the printing rotator is transferred to the conveyance path while the printing rotator rotates once. A supply device capable of supplying two sheets toward the
The supply device is a corrugated cardboard box making machine that supplies the short cardboard sheets in association with the rotational positions of the first printing plate and the second printing plate. The printing rotator is configured by exchanging the first and second printing plates,
Each of the first and second grooving rotators can adjust the distance between the fixed blade and the fixed blade in order to perform grooving on the front end portion and the rear end portion of each short cardboard sheet. A movable blade is provided on the outer peripheral surface,
The supply device includes a first supply claw portion and a second supply that push each of the short cardboard sheets to the conveyance path in association with rotational positions of the first printing plate and the second printing plate, respectively. Have nail parts,
The first supply claw portion and the second supply claw portion are arranged side by side in a direction orthogonal to the conveyance direction of the short cardboard sheet, and are arranged at different positions in the conveyance direction,
When a cardboard sheet having a length longer than half the circumferential length of the outer peripheral surface of the printing rotating body in the transport direction is transported by the transport device, the movable blade is disposed at a position close to the fixed blade. The corrugated board box making machine according to claim 14, wherein the first and second supply claws are arranged in a line in a direction orthogonal to the transport direction.

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