JP2005254821A - Control method of individual driving type printer and individual driving type printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a control method of individual driving type printer to quickly enter on a plate changing operation after speed reduction stop from stationary printing operation without depending on geometrical arrangement for control method of an individual driving type printer. <P>SOLUTION: When stopping each printing unit by reducing a speed from a stationary printing speed, at first from start of reducing a speed to extraction of a barrel on the way to slowing down, each driving motor is controlled in synchronism so that a barrel phase relation between respective printing units is a target barrel phase relationship in the stationary printing operation. Then, after extracting the barrel, the target barrel phase relationship is changed from the first target phase relationship to a second target barrel phase relationship being a target barrel phase relationship after stopping the operation. Respective driving motors are individually controlled and stopped so that the barrel phase relationship between respective printing units becomes the second target barrel phase relationship until the operation is stopped. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drive motor control technique in an individual drive type (shaftless type) printing machine having a drive motor individually for each unit, and more particularly, to a drive motor control technique for individually driving a printing unit.

  As shown in FIG. 3, the rotary printing press (commercial rotary press) includes an in-feed roller 2 arranged along the running direction of the web 37 fed from the web 1, printing units 3 to 6 for each color, a cooling cylinder 7, It is composed of a plurality of units such as a drag roller 8 and a folding machine 9. In recent rotary printing machines, the units 2 to 9 are not mechanically connected to each other by the line shaft to rotate the units 2 to 9 synchronously. A method of rotating the drive motor in synchronization is employed.

  This method is generally called an individual drive method or a shaftless method, and each of the units 2 to 9 has a drive motor 10 to 17 and a driver 18 to 25 for controlling the drive motor 10 to 17 individually. Is provided. Master stations 34 and 35 are installed above the drivers 18 to 25, and an overall control device 36 for comprehensively controlling the entire rotary printing machine is installed above each master station 34 and 35. Further, rotary encoders 26 to 33 for detecting the phase are connected to the motor shafts of the drive motors 10 to 17. Among these, the printing units 3 to 6 and the rotary encoders 27 to 30 and 33 of the folding machine 9 are capable of detecting absolute positions.

  One master station 35 is connected to the drivers 23 to 25 corresponding to the cooling cylinder 7, the drag roller 8, and the folding machine 9. The master station 35 generates target position data of the drive motors 11 to 14 of the printing units 3 to 6 by calculation based on the data of the folding machine 9 according to the operation instruction of the rotary press and transmits the data to the master station 34. A function for transmitting a control command signal to the motor driver 25 for the folding machine, the motor driver 23 for the cooling cylinder, and the motor driver 24 for the drag roller, and an interface function with the overall control device 36. ing.

  The other master station 34 is connected to the infeed roller 2 and the drivers 18 to 22 corresponding to the printing units 3 to 6. The master station 34 has a function of receiving the target position data transmitted from the master station 35, a function of transmitting a control command signal to each of the printing unit motor drivers 19 to 22 and the in-feed roller motor driver 18, and And an interface function with the connected overall control device 36.

Each of the printing unit drivers 19 to 22 and the folding machine driver 25 compares the control signals from the corresponding master stations 34 and 35 with the signals from the corresponding rotary encoders 27 to 30 and 33, respectively. Acceleration / deceleration control of each drive motor 11-14, 17 is performed. This acceleration / deceleration rate can be set in advance by the drivers 19 to 22 and 25. Further, the drive motors 11 to 14 of the printing units 11 to 14 can be rotated independently regardless of the overall control. On the other hand, the infeed roller driver 18, the cooling cylinder driver 23, and the drag roller driver 24 have speed command signals from the corresponding master stations 34 and 35, and signals from the corresponding rotary encoders 26, 31, and 32, respectively. Are compared with each other, and control is performed so that each of the drive motors 10, 15, and 16 matches the speed command value.
The units 2 to 9 can rotate accurately while maintaining a constant phase relationship by the function of each unit as described above. Note that details of the control contents from the start of operation to the steady operation are disclosed in detail in Patent Document 1, and thus description thereof is omitted here.

  Here, FIG. 4 is a velocity diagram showing the relationship between the time from the steady printing operation to the stop in the printing units 3 to 6 and the rotational speed. When printing is finished, as shown in FIG. 4, deceleration is started from the printing speed, and the rotational speed is gradually decreased with a substantially constant gradient. Then, in the middle of the deceleration from the start of deceleration to the stop, the cylinder is removed, and the printing is substantially finished. Each of the printing units 3 to 6 rotates at a constant speed while maintaining a constant phase so that the printing registration is suitable for the whole during the steady printing operation. Further, during the period from the steady printing operation to the deceleration stop, the printing units 3 to 6 are decelerated in synchronization with each other according to the speed diagram shown in FIG. 4, and the phase relationship during the steady printing operation is maintained as it is. Yes.

FIG. 5 is a diagram specifically showing the phase relationship between the printing units 3 to 6. As shown in FIG. 5, each of the printing units 3 to 6 is provided with a plate cylinder 38 and a blanket cylinder 39, which are rotated by corresponding drive motors 11 to 14 together with an ink device (not shown). A gap 40 for mounting the plate is provided on the surface of each plate cylinder 38 in the axial direction, and both ends of the plate are inserted into the gap 40 and fixed by a plate clamping device (not shown). Yes. The phases of the printing units 3 to 6 correspond to the phase of the gap 40, and the phase adjustment is performed so that the positions of the gaps 40 of the printing units 3 to 6 coincide on the web 37.
JP 2001-125647 A

  By the way, when one printing job is completed, the printing press is stopped and the plate is changed for the next printing. At this time, it is desirable that the plate cylinders 38 of the printing units 3 to 6 are stopped at a position where the plate end of the plate can be easily removed from the gap 40 of the plate cylinder 38.

However, since each of the printing units 3 to 6 stops while maintaining the phase during the steady printing operation, as shown in FIG. 5, even if the plate cylinder 38 of the first color printing unit 3 is stopped at an appropriate position for plate change. The plate cylinders 38 of the second to fourth color printing units 4 to 6 are in an unsuitable position for changing the plates. That is, there is a gap in the phase of the gap 40 corresponding to the difference between the reference printing length (plate cylinder circumference) and the unit interval L between the printing units, and the first color printing unit 3 as shown in FIG. Even when the plate cylinder 38 is in the right position, the second color printing unit 3 has an α ₁ cylinder phase shift, the third color printing unit 4 has an α ₂ cylinder phase shift, and the fourth color printing unit has an α ₃ shift. The cylinder phase shifts.

  For this reason, when the plate is changed, the drive motors 12 to 14 are independently set so that the gap 40 comes to an appropriate place for the printing units 4 to 6 where the position of the gap 40 of the plate cylinder 38 is inappropriate for the plate change. It is necessary to rotate the plate cylinder 38 by restarting, and to align the phase of the plate cylinder 38 so that the position of the gap 40 is at an appropriate position for plate change. However, since the phase adjustment operation of the plate cylinder 38 is performed by the operator operating the drive motors 12 to 14, extra time for phase alignment of the plate cylinder 38 is required every time the plate change operation is performed. In other words, the plate change operation is necessary for each print job, and if there are many, there are as many as ten times a day, and the overall printing efficiency is greatly reduced.

  As one method for solving this problem, there is a method in which the interval L between the printing units is the same as the reference printing length or an integral multiple so that the phases of the plate cylinders 38 of all the printing units 3 to 6 are the same. However, in practice, it is difficult to set the interval L between the printing units to be the same as the reference printing length or an integer multiple because of restrictions such as the working space and the size of the machine and the ease of printing failure. In reality, it has been difficult to solve the above-mentioned problems with a simple arrangement.

  The present invention has been devised in view of such problems. In an individual-drive-type printing machine provided with a drive motor for each printing unit, it is possible to reduce the speed from a steady printing operation without using a geometrical arrangement. It is an object of the present invention to provide a drive motor control method for an individually driven printing machine, which can immediately start a plate change operation after stopping.

  The method for controlling an individually driven printing machine according to claim 1 of the present invention is a method for controlling an individually driven printing machine that controls a plurality of drive motors provided in each of a plurality of printing units and a folding machine. As the target cylinder phase relationship in the plurality of printing units, the first target cylinder phase relationship that is the target cylinder phase relationship during the printing operation of the printing machine and the second target cylinder phase relationship after the operation of the printing machine is stopped. The target cylinder phase relationship is set in advance, and when the plurality of printing units are decelerated from the steady printing speed and stopped, the cylinder phase relationship between the plurality of printing units is from the start of deceleration to the cylinder removal during deceleration. The plurality of drive motors are synchronously controlled to maintain the first target cylinder phase relationship, the cylinders of the plurality of printing units are removed, and after the cylinder removal, the target cylinder phase relationship is changed to the first target cylinder position. The relationship is switched from the relationship to the second target cylinder phase relationship, and the cylinder phase relationship between the plurality of printing units based on the deceleration rate of the specific printing unit from the plurality of printing units after the switching until the operation stop. Is characterized in that the plurality of drive motors are individually controlled and stopped so as to satisfy the second target cylinder phase relationship.

  According to a second aspect of the present invention, there is provided a control method for an individually driven printing machine according to the present invention, which controls a plurality of drive motors provided in each of a plurality of printing units and a folding machine. As the target cylinder phase relationship in the plurality of printing units, the first target cylinder phase relationship that is the target cylinder phase relationship during the printing operation of the printing machine and the second target cylinder phase relationship after the operation of the printing machine is stopped. The target cylinder phase relationship is set in advance, and when the plurality of printing units are decelerated from the steady printing speed and stopped, the cylinder phase relationship between the plurality of printing units is from the start of deceleration to the cylinder removal during deceleration. The plurality of drive motors are synchronously controlled to maintain the first target cylinder phase relationship, the cylinders of the plurality of printing units are removed, and the target cylinder phase relationship is changed to the first target cylinder phase after the cylinder removal. The plurality of drive motors are switched so that the cylinder phase relationship between the plurality of printing units becomes the second target cylinder phase relationship between the switch and the second target cylinder phase relationship. It is characterized by being controlled individually and stopped simultaneously.

  The method for controlling an individually driven printing machine according to a third aspect of the present invention is the method according to the first or second aspect, wherein the cylinder phase relationship between the plurality of printing units is between the switching and the stoppage of the operation. The plurality of drive motors are individually controlled to stop the plurality of printing units at the same time so that the second target cylinder phase relationship is established.

  A method for controlling an individually driven printing machine according to a fourth aspect of the present invention is the method according to the first or second aspect, wherein the cylinder phase relationship between the plurality of printing units is the second target cylinder phase when the operation is stopped. The plurality of drive motors are individually controlled so as to satisfy the relationship, and are individually stopped from the printing unit having the second target cylinder phase relationship.

  A method for controlling an individually driven printing machine according to a fifth aspect of the present invention is the method according to any one of the first to fourth aspects, wherein the printing unit is a specific printing unit related to plate change from the plurality of printing units. And the second target cylinder phase relationship is set for the selected specific printing unit.

  According to a sixth aspect of the present invention, there is provided a method for controlling an individually driven printing machine according to the fifth aspect of the present invention, wherein the first printing method is performed after the switching and before the operation is stopped, based on the deceleration rate of the specific printing unit. The plurality of drive motors of other printing units are individually controlled and stopped so as to have a two-target cylinder phase relationship.

  A control method for an individually driven printing machine according to a seventh aspect of the present invention is the method according to the fifth or sixth aspect, wherein when there are a plurality of the specific printing units, the cylinder phase of the plate cylinder of the specific printing unit is determined. A plate cylinder having an average and a cylinder phase closest to the averaged phase is selected as a reference cylinder, and the second target cylinder phase relationship is set using the cylinder phase of the reference cylinder as a reference phase.

  The individually driven printing machine of the present invention according to claim 8 is a plurality of printing units, a plurality of driving motors for driving the plurality of printing units, and a control device for controlling the printing units and the plurality of driving motors. When the plurality of printing units are decelerated from a steady printing speed and stopped, the control device is provided between the plurality of printing units from the start of deceleration until the cylinder removal during deceleration. The plurality of drive motors are synchronously controlled to maintain the first target cylinder phase relationship which is the target cylinder phase relationship during printing operation, and after the cylinder removal, the target cylinder phase relationship is The first target cylinder phase relationship is switched to the second target cylinder phase relationship that is the target cylinder phase relationship after the operation stop, and the cylinder phase relationship between the plurality of printing units is changed before the operation is stopped after the switching. It said plurality of drive motors individually controlled such that the second target cylinder phase relationship, is characterized in that control to stop the plurality of printing units simultaneously.

  According to the individually driven printing machine of the present invention, since the printing cylinder and the web of each printing unit are restrained in the cylinder-inserted state, the drive motors are synchronously controlled so that the peripheral speeds of the web and each printing cylinder coincide with each other. There is a need to. However, since the restraint between each printing cylinder and the web is eliminated in the cylinder-extracted state, no trouble occurs even if the peripheral speeds of the web and each printing cylinder do not match, and each drive motor can be controlled individually. .

  According to the control method of the individually driven printing machine and the individually driven printing machine of the present invention, after cylinder removal, each printing unit has the second target cylinder phase relationship after operation stop by individual control of each drive motor. Since the vehicle is decelerated while changing the phase position toward the target cylinder phase relationship and stops in the state where the second target cylinder phase relationship is established, the second target is set so that the plate cylinder of each printing unit comes to the plate change position. By setting the cylinder phase relationship in advance, it is possible to quickly start the plate changing operation after the operation is stopped, and it is possible to shorten the plate changing time and improve the printing efficiency.

(A) 1st Embodiment Hereinafter, 1st Embodiment of this invention is described based on FIG.1, FIG.2, FIG.3 and FIG. FIG. 1 is a velocity diagram showing a drive motor control method for an individually driven printing machine according to the first embodiment of the present invention, and FIG. 2 shows each plate when the drive motor control method according to the present embodiment is applied. It is a figure which shows the phase relationship at the time of the stop of a trunk | drum. In addition, here, the present invention is applied to an individual drive type commercial rotary press having the configuration shown in FIG. 3, and the plate cylinders maintain the phase relationship shown in FIG. 5 during steady printing operation. However, the dimensions, materials, shapes, relative positions, and the like of the component parts described below are merely illustrative examples, and are not intended to limit the scope of the present invention unless otherwise specified. In addition, about the same site | part as the above-mentioned conventional thing, the same code | symbol is attached | subjected and shown in a figure, and the overlapping description is abbreviate | omitted.

  The drive motor control method according to the present embodiment is configured so that the printing units 3 to 6 in the cylinder phase relationship shown in FIG. 5 (here, in particular, the phase relationship of the plate cylinder 38) during the steady printing operation are transferred to the cylinder phase shown in FIG. The operation is stopped due to the relationship. When each of the printing units 3 to 6 is in steady operation, the printing cylinders such as the plate cylinder 38 and the blanket cylinder 39 are in a cylinder-inserted state and are mechanically restrained with respect to the web 37. For this reason, it is necessary to synchronously control the drive motors 11 to 14 so that the web 37 and the peripheral speeds of the printing cylinders 38 and 39 coincide with each other while in the cylinder-inserted state. However, since the web 37 and the print cylinders 38 and 39 are not restrained after being removed, the drive motors 11 to 14 can be controlled individually.

  Therefore, the drive motor control method according to the present embodiment controls each of the drive motors 11 to 14 according to the speed diagram shown in FIG. The operation stop in the cylinder phase relationship shown in FIG. 2 is realized. Specifically, as shown in FIG. 1, first, as in the prior art, deceleration is started from the printing speed, and the rotational speed is gradually reduced at a substantially constant gradient. During this time, the drive motors 11 to 14 are synchronously controlled so that the cylinder phase relationship between the printing units 3 to 6 is maintained at the cylinder phase relationship (first target cylinder phase relationship) shown in FIG. Then, the cylinder is removed in the middle of deceleration from the start of deceleration to the stop, and printing is substantially terminated.

After the cylinder removal, the target of the cylinder phase relationship between the printing units 3 to 6 is switched from the first target cylinder phase relationship to the cylinder phase relationship (second target cylinder phase relationship) shown in FIG. Here, using the phase of the plate cylinder 38 of the first color printing unit 3 as a reference phase, the second color printing unit 4 has a phase advanced by α ₁ with respect to the first color printing unit 3, and the third color printing unit 5 is the first color printing unit. The fourth color printing unit 6 sets the phase advanced by α _{2 with} respect to _{3 and} the phase delayed by α _{3 with} respect to the first color printing unit 3 as the second target cylinder phase. And the deceleration rate of each drive motor 11-14 is controlled separately toward this 2nd target cylinder phase relationship.

  Specifically, first, the drive motors 12 and 13 of the second and third color printing units 4 and 5 are decelerated at a deceleration smaller than a predetermined normal deceleration (deceleration of the first color printing unit 3). The drive motor 14 of the fourth color printing unit 6 is decelerated at a deceleration larger than the normal deceleration. Each of them returns to normal deceleration at a certain point. The deceleration rate of the drive motors 12 to 14 during this time is calculated so that the cylinder phase of the printing units 4 to 6 coincides with the cylinder phase of the first color printing unit 3 when returning to the normal deceleration. When the cylinder phases of all the printing units 3 to 6 coincide, the operation is stopped so that the gap 40 of the plate cylinder 38 is at the position shown in FIG.

  Note that the cylinder phase relationship shown in FIG. 2 and the cylinder phase relationship shown in FIG. 5 are the differences within the maximum plus or minus 0.5 rotation (within 1 rotation in total) with respect to the rotation of the plate cylinder 38. Compared with the cumulative number of rotations of the plate cylinder 38, the phase of each plate cylinder 38 can be changed by a relatively small amount of rotation. Accordingly, it is possible to change the phase of the plate cylinder 38 with a sufficient margin from the time when the cylinder is removed to the time when the operation is stopped, and the phase of the plate cylinder 38 can be changed by a deceleration change operation that does not cause a problem in operation. Can be changed.

  As described above, according to the drive motor control method according to the present embodiment, when the operation is stopped, the plate cylinders 38 of all the printing units 3 to 6 are at the plate changing positions shown in FIG. In 3-6, the plate can be changed immediately after the operation is stopped. As a result, the plate change time can be shortened, and the production efficiency of printing can be improved.

Here, all the printing units 3 to 6 are stopped at the same time after the cylinder phase relationship between the printing units 3 to 6 is matched with the second target cylinder phase relationship, but all the printing units 3 to 6 are not necessarily stopped simultaneously. There is no need to let them. That is, if each printing unit 3 to 6 is individually stopped at each target cylinder phase (the cylinder phase shown in FIG. 5), a time difference occurs, but when all the printing units 3 to 6 are stopped, the printing units 3 to 6 are stopped. Can be the second target cylinder phase relationship. The target cylinder phase relationship between the printing units 3 to 6 is not limited to that shown in FIGS. 2 and 5 and can be set to an arbitrary cylinder phase relationship.
In addition, although the case of a printing machine having four color printing units has been described here, the drive motor control method of the present invention can be applied to more printing units as long as each printing unit is driven by an individual driving motor. The present invention can also be applied to a printing press equipped with a printer, and vice versa.

(B) Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. 6, 7, 8, and 9. In the present embodiment, the control method described in the first embodiment is applied to the control of a drive motor of a newspaper rotary press.

  As shown in FIG. 6, a general newspaper rotary press includes a plurality of units such as a paper feeding device 41, an infeed device 42, a printing device 43, a web pass device 44, a folding machine 45, and a paper discharge device 46. ing. Among these, a plurality of sets of paper feeding devices 41, infeed devices 42, and printing devices 43 are provided. The paper feeding device 41 rotatably supports the web 48 by a reel stand 47 and continuously supplies the web 49 from the web 48 corresponding to the web consumption speed associated with printing. The infeed device 42 is positioned between the paper feeding device 41 and the printing device 43, draws the web 49 from the paper feeding device 41, and supplies it to the downstream printing device 43 with a predetermined tension applied.

  The printing device 43 includes a plurality of printing units 50 arranged in parallel in the traveling direction of the web 49. The printing unit 50 is disposed opposite to both sides of the running line of the web 49, and the web 49 passes through the printing unit 50, whereby printing on both the front and back surfaces of the web 49 is performed. The web pass device 44 appropriately controls the transport state of the plurality of webs 49 printed by each printing device 43 and joins them at a predetermined timing. And it is carried in into the downstream folding machine 45 in the state which piled up the web 49 into one. The folding machine 45 receives the web 49 from the web pass device 44, and performs various processes on the web 49, such as cutting and folding at a predetermined position, to make a folding book, and externally via the paper discharge device 46. Is being carried out.

  Also in the newspaper rotary press, like the commercial rotary press described above, a shaftless type is adopted in which each component unit is provided with an independent drive motor and is driven to rotate synchronously. FIG. 7 is a schematic diagram showing the arrangement of drive motors in the printing apparatus 43. In FIG. 7, the printing apparatus 43 includes eight printing units 50a to 50h. As shown in FIG. 7, the drive motors are arranged in such a manner that the drive motors 51a to 51f are provided for each of the print units 50a to 50f, or one of the opposing print units 50g and 50h. Although there is a type in which the driving motor 51g is provided only for 50g and the other printing unit 50h is driven, the present invention can be applied to any type. Since the configuration of the control system of these drive motors 51a to 51g is the same as that of a commercial rotary press, description thereof will be omitted.

  By the way, as shown in FIG. 8, the plate cylinder 52 provided in the printing unit 50 of the newspaper rotary press generally has four pages 53a, 53c, 53e, 53g (53b, 53d, 53f, 53h) in the width direction. It can be installed. In general, the plate cylinder 52 is configured so that double cylinders, that is, two pages of printing plates 53a and 53b (53c, 53d, 53e, 53f, 53g, and 53h) can be attached in the circumferential direction, as shown in FIG. Two plate mounting gaps 54, 54 are provided which are shifted by 180 degrees on the same circumference. The printing plate has one page circumference as shown in FIG. 9 and two page circumferences, and any one gap is used when mounting the printing plate of two pages. The plate mounting gap is provided for every two left and right pages, and there is a phase difference between the gap positions 54a and 54b for the right two pages and the gap positions 54c and 54d for the two left pages. Is provided. When replacing the printing plate, the rotational phase of the plate cylinder 52 is adjusted, and the gap corresponding to the printing plate to be replaced is stopped at the optimum position (for example, the front surface of the printing unit).

  In a newspaper rotary press, the contents of the page are partially changed depending on the sales area of the newspaper, and therefore, plate change work for replacing and replacing a part of the printing plate is frequently performed. The reprint page changes depending on the pattern change location in the upstream editing process, and may be performed on one page or in a random area on a plurality of pages. Conventionally, the plate cylinder to be reprinted on the plate renewal page and the plate replacement location are specified, and the plate cylinder is rotated after the printing machine is stopped to set the gap corresponding to the plate to be replaced at the optimum position. For the first time, I started to change the plate. For this reason, it takes time when there are a large number of plate-changing locations, and time reduction has become a major issue in newspaper printing that competes for minutes.

  Therefore, in the present embodiment, the above-described problem is solved by applying the control method of the drive motor described in the first embodiment to the control of the drive motor of the printing unit of the newspaper rotary press. Specifically, first, in order to replace the plurality of printing plates 53a to 53h on the plate cylinder 52, the priority order of the gaps to be stopped at the optimum position is determined in the order convenient for the replacement. For example, if the priority of the gaps at the positions 54c and 54d is higher than the priority of the gaps at the positions 54a and 54b, when the four printing plates 53a, 53b, 53e and 53f are exchanged together, the position stops at the optimum position. The gap to be made is the gap at the position 54c or 54d. The rotational phase of these positions 54c or 54d is set as the cylinder phase of the plate cylinder 52.

The reference cylinder corresponding to the plate cylinder of the first color printing unit of the first embodiment can average the cylinder phases of all the plate cylinders related to the plate exchange, for example, to be the plate cylinder closest to the average phase. . In this case, the shift of the cylinder phase of the plate cylinder related to the replacement of the other plate with respect to the reference cylinder corresponds to α ₁ , α ₂ , α _{3 and the} like shown in FIG. As shown in FIGS. 8 and 9, when using the 1-page circumferential version, there are two gap candidates to be stopped at the optimum position in one plate cylinder as described above (in the above example, the position 54c). In this case, the phase of the gap with the smaller deviation from the average phase is selected as the cylinder phase of the plate cylinder.

  The selection of the plate cylinder for the plate exchange, the selection of the gap to be stopped at the optimum position, and the selection of the reference cylinder are automatically performed by a control device (not shown) that integrally controls the drive motors 51a to 51f according to a program. Note that the printing condition information such as the pattern change location necessary for the control device to perform each of the above selection processes is input by the operator to the control device before starting printing, or from the upper print control system to the control device. It will be automatically imported.

  As described above, when the plate cylinder for plate replacement is selected, the gap to be stopped at the optimum position is selected, and the reference cylinder is selected, the control device prints the printing machine while maintaining the cylinder phase relationship during printing. The operation speed of the vehicle is reduced, and the body is removed during the deceleration. Then, after cylinder removal, the plate cylinders for plate replacement are individually controlled by corresponding drive motors, and the cylinder phase is made to coincide with the cylinder phase of the reference cylinder until the operation is stopped. Since the control method of the drive motor from the start of deceleration to the stop is the same as that described in the first embodiment, detailed description thereof is omitted.

  As soon as each plate cylinder for plate replacement stops at a specific stop position, the operator can immediately enter the plate replacement operation. When the operation of the printing press is resumed after the plate replacement, the control device adjusts the cylinder phase by controlling the drive motor of each plate cylinder for plate replacement during the slow operation before the start of printing or during the acceleration operation. Then, after returning to the cylinder phase relationship during normal printing, printing is resumed.

  As described above, the drive motor control method of the individually driven printing machine according to the present embodiment automatically selects the plate cylinders to be changed for various plate changing locations, and optimally selects the selected plate cylinders. The stop position (plate change position) is indexed and automatically stopped at the optimum stop position, and the printing stop time associated with the plate change after the stop can be greatly shortened. In particular, in a newspaper rotary press that performs a variety of printings with little time margin for plate change, a remarkable effect can be obtained.

(C) Others Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, in each of the above-described embodiments, when the printing unit is decelerated, the drive motor is controlled to stop each plate cylinder at an optimal position for plate change from the cylinder unloading to the stop. Later, the drive motor may be automatically rotated to rotate each plate cylinder to an optimum position for plate change. In this case, the stop time for plate change increases as the control start is delayed, but the phase alignment is automatically performed as compared with the case where the operator operates the drive motor to adjust the phase of the plate cylinder. It is possible to save time and effort, and it is possible to start the plate changing work with a short waiting time, thereby shortening the plate changing time.

  Further, the present invention can be widely applied to not only rotary printing presses but also sheet-fed printing presses as long as they are individually driven printing machines.

It is a speed diagram which shows the control method of the drive motor of the individual drive type printing machine concerning one Embodiment of this invention. It is a figure which shows the phase relationship at the time of the stop of each plate cylinder when the control method shown in FIG. 1 is applied. It is the schematic which shows the structure of a general individual drive type rotary printing machine (commercial rotary press). It is a speed diagram which shows the conventional control method of the drive motor which drives a printing unit in the rotary printing machine of an individual drive system. It is a figure which shows the phase relationship of each plate cylinder in the rotary printing machine of an individual drive system. It is the schematic which shows the structure of a general newspaper rotary press. It is the schematic which shows arrangement | positioning of the drive motor in the newspaper drive of an individual drive system. It is the schematic which shows the attachment state of the printing plate in the plate cylinder of a newspaper rotary press. FIG. 9 is a cross-sectional view taken along the line PP in FIG. 8.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Winding paper 2 Infeed roller 3-6 Printing unit 7 Cooling cylinder 8 Drag roller 9 Folding machine 10-17 Drive motor 18-25 Motor driver 26-33 Rotary encoder 34,35 Master station 36 Overall control device 37 Web 38 Plate cylinder 39 Blanket cylinder 40 Gap 41 Paper feeding device 42 Infeed device 43 Printing device 44 Web pass device 45 Folding machine 46 Paper discharge device 47 Reel stand 48 Winding paper 49 Web 50, 50a-50h Printing unit 51a-51g Drive motor 52 Plate cylinder 53a- 53h Plate 54 Gap 54a-54d Gap position

Claims (8)

A control method of an individual drive type printing machine that controls a plurality of drive motors provided in each of a plurality of printing units and a folding machine,
As the target cylinder phase relationship in the plurality of printing units, the first target cylinder phase relationship that is the target cylinder phase relationship during the printing operation of the printing machine and the second target that is the target cylinder phase relationship after the operation of the printing machine is stopped. Set the torso phase relationship in advance,
When the plurality of printing units are decelerated from the steady printing speed and stopped, the cylinder phase relationship between the plurality of printing units maintains the first target cylinder phase relationship from the start of deceleration to cylinder removal during deceleration. Synchronously controlling the plurality of drive motors,
Removing the cylinders of the plurality of printing units;
After the boring,
Switching the target cylinder phase relationship from the first target cylinder phase relationship to the second target cylinder phase relationship;
The cylinder phase relationship between the plurality of printing units becomes the second target cylinder phase relationship based on the deceleration rate of the specific printing unit from the plurality of printing units after the switching until the operation stop. A control method for an individually driven printing machine, wherein the plurality of drive motors are individually controlled and stopped. A control method of an individual drive type printing machine that controls a plurality of drive motors provided in each of a plurality of printing units and a folding machine,
As a target cylinder phase relationship in the plurality of printing units, a first target cylinder phase relationship that is a target cylinder phase relationship during a printing operation of the printing machine and a second target that is a target cylinder phase relationship after the operation of the printing machine is stopped. Set the torso phase relationship in advance,
When the plurality of printing units are decelerated from the steady printing speed and stopped, the cylinder phase relationship between the plurality of printing units maintains the first target cylinder phase relationship from the start of deceleration to cylinder removal during deceleration. Synchronously controlling the plurality of drive motors,
Removing the cylinders of the plurality of printing units;
After the cylinder removal, the target cylinder phase relationship is switched from the first target cylinder phase relationship to the second target cylinder phase relationship,
The plurality of drive motors are individually controlled and stopped simultaneously so that the cylinder phase relationship between the plurality of printing units becomes the second target cylinder phase relationship after the switching and when the operation is stopped. Control method for individually driven printing machine. The plurality of printing units are controlled by individually controlling the plurality of drive motors so that the cylinder phase relationship between the plurality of printing units becomes the second target cylinder phase relationship after the switching and when the operation is stopped. 3. The method for controlling an individually driven printing machine according to claim 1, wherein the control is performed simultaneously. When the operation is stopped, the plurality of drive motors are individually controlled so that the cylinder phase relationship between the plurality of printing units is the second target cylinder phase relationship, and the printing having the second target cylinder phase relationship is performed. 3. The method for controlling an individually driven printing machine according to claim 1 or 2, wherein the control is performed individually from the unit. Select a specific printing unit for plate change from the plurality of printing units,
The method for controlling an individually driven printing machine according to claim 1, wherein the second target cylinder phase relationship is set for the selected specific printing unit. Based on the deceleration rate of the specific printing unit as a reference, the plurality of drive motors of other printing units are individually controlled and stopped so that the second target cylinder phase relationship is established after the switching and before the operation is stopped. 6. The method for controlling an individually driven printing machine according to claim 5, wherein: When there are a plurality of specific printing units, the cylinder phases of the plate cylinders of the specific printing units are averaged, a plate cylinder having a cylinder phase closest to the averaged phase is selected as a reference cylinder, and the cylinder of the reference cylinder is selected. 7. The method for controlling an individually driven printing machine according to claim 5, wherein the second target cylinder phase relationship is set with a phase as a reference phase. In an individual drive type printing machine comprising a plurality of printing units, a plurality of driving motors for driving the plurality of printing units, and a control device for controlling the printing units and the plurality of driving motors,
When the control device decelerates the plurality of printing units from the steady printing speed and stops, the cylinder phase relationship between the plurality of printing units is the target during the printing operation from the start of deceleration to cylinder removal during deceleration. Synchronously controlling the plurality of drive motors so as to maintain a first target cylinder phase relationship that is a cylinder phase relationship;
After the cylinder removal, the target cylinder phase relationship is switched from the first target cylinder phase relationship to a second target cylinder phase relationship that is a target cylinder phase relationship after operation stop,
The plurality of drive motors are individually controlled so that the cylinder phase relationship between the plurality of printing units becomes the second target cylinder phase relationship from the switching to the stop of operation, and the plurality of printing units are simultaneously stopped. An individually driven printing machine characterized by being controlled as follows.

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