JP2021020350A - Turn bar - Google Patents

Abstract

To provide a turn bar device capable of blowing out air from small holes of the turn bar device only to a required place in accordance with various rolling paper widths.SOLUTION: By using an air piping 80, branched air pipings 83, 84, 85, 86, and air valves 90 for forming a turn bar device in a multi-division structure, the air valves 90 of a used place and an unused place are opened/closed, air loss of the used place is eliminated by preventing air from blowing out from the unused place, and tension is stabilized by facilitating taking an air balance so as to stably make a well-balanced signature.SELECTED DRAWING: Figure 3

Description

The present invention relates to a turn bar device (turn bar) in an offset printing press.

The present invention relates to a turn bar device that changes the traveling direction of the web by being provided on the path on which the web travels.

Conventionally known offset rotary presses for printing on roll paper include a paper feed section for providing one or more rolls, such as an offset rotary press for newspapers, and a printing section for printing on a web. It is composed of a rail frame part equipped with a plurality of paper pulling rollers and a turn bar device, and a folded part that folds one or more printed webs and ejects paper in the form of a signature.

FIG. 1 is a configuration diagram showing an offset rotary press for newspapers. As shown in the figure, the offset rotary press is provided with a plurality of paper feed sections, a plurality of printing sections, a rail frame section, and a folding section, and is either single color or By using a structure in which web guiding means such as a turn bar device, a guide roller, a drag roller, and a bay window provided in the rail frame portion are appropriately provided in multiple stages in order to superimpose the multi-color printed web on the desired position. By inserting a color surface at a desired position, a wide variety of printing is possible.

The size of the turnbar device is full width and half width, and the turnbar device is provided with small holes to prevent stains and wrinkles due to ink rubbing on the printed matter surface of the web (running paper) passing through the turnbar device. The air is blown out from the small hole.

There is known a turn bar device provided with an air outlet for blowing air in order to raise a web wound around the turn bar device in the prior art from the outer peripheral surface of the turn bar (see, for example, Patent Document 1). The content described in Patent Document 1 is stable due to the flow of air at this position because the air outlet is not provided in the central portion of the web winding portion where the web is difficult to float due to the action of the tension of the web. An air layer is formed and the web floats, and the web can float substantially uniformly and can run in a stable state.

Furthermore, since it is possible to run the web in a stable state where it always floats uniformly, the frictional resistance between the web winding portion on the outer peripheral surface of the turn bar and the web is eliminated, so that the fluctuation of the web tension is reduced and the tension is reduced. Various inconveniences caused by fluctuations are eliminated. Therefore, for example, stable printing is possible in a rotary press. Further, in the case of a rotary press, since the outer periphery of the turn bar does not come into contact with the web, a printed matter having good print quality without stains on the printed surface can be obtained, and clogging due to adhesion of ink and paper dust at the air outlet can be obtained as much as possible. It can be reduced and maintenance is easy.

However, the conventional turn bar device disclosed in Patent Document 1 does not specify the air balance due to various changes in the winding paper size, and the size of the winding paper is assumed to be one size. There is a problem that it is difficult to correspond to various roll paper sizes.

Japanese Patent No. 3058880

In the conventional turn bar device, there are unused parts in the longitudinal direction of the turn bar depending on the size of the winding paper, but in order to prevent air loss due to this, the air holes in the unused parts are provided with adhesive parts such as taping. The measures such as closing with tape were taken.

Therefore, it takes a long time to attach the taping as a preparation for printing, to remove the taping after printing, and to clean the adhesive portion when the taping is removed.

Among various print media, for example, when moving from one print medium to the next, if it takes time to attach and remove the above-mentioned taping related to the turnbar device, the print start time is delayed, and in particular, printing is completed. If the time is fixed, the printing time has to be shortened, and measures such as increasing the printing speed are taken. However, if there is an accident, there is a concern that there will be no time to spare.

If the removal work is forgotten, it becomes impossible to blow the necessary air from the turn bar device at the time of the next printing, and there is a possibility that problems such as stains and wrinkles due to ink rubbing may occur on the printed surface.

An object of the present invention is to provide a turn bar device for an offset rotary press, which enables air to be blown out only at necessary locations, and which can handle various paper widths and greatly improves workability and print quality. To do.

In order to solve the above-mentioned problems, the turn bar device according to claim 1 of the present invention is
A turn bar with a large number of air blowing regions provided in the longitudinal direction.
It is characterized in that it is possible to select so that air does not blow out from a part of the blown-out areas of the air so as to correspond to various paper widths passing through the turn bar.

Further, the turn bar device according to claim 2 of the present invention is
It is characterized in that air is prevented from being blown out from both ends of the winding paper in a portion exceeding a predetermined range in each of the longitudinal directions of the turn bar according to the winding paper having various paper widths passing through the turn bar.

Further, the turn bar device according to claim 3 of the present invention is the turn bar device according to claim 1 or 2.
Among the large number of air blowing regions, the feature is that the on-off valve that prevents the air from blowing out from the region where the winding paper does not pass and the air blowing is unnecessary is provided as an operating means that can be remotely controlled. There is.

Further, the turn bar device according to claim 4 of the present invention is the turn bar device according to claims 1 to 3.
It is characterized in that the pressure of the air blown from the turn bar can be adjusted.

Further, the turn bar device according to claim 5 of the present invention is the turn bar device according to claims 1 to 4.
The turn bar is a turn bar used in a rotary press for printing, and is characterized in that it is used when a plurality of rolls of various paper widths are stacked in an appropriate pattern.

Further, the turn bar device according to claim 6 of the present invention is the turn bar device according to claim 5.
It is a rotary press for newspaper printing provided with the turn bar.

According to the present invention, when the turn bar device is configured as described above, there is no loss of air blown out from the small holes of the turn bar device, and the width of the roll paper is narrower than that of the so-called C roll, D roll and other A roll sizes of the roll paper. In terms of size, it is possible to improve the print quality by making it easier to balance the air of the turn bar device.

As a workability improvement, anyone can easily set the turnbar device, so that a turnbar device can be provided that can significantly reduce the time required for printing preparation and post-work regardless of whether it is a veteran or a newcomer. It becomes possible.

It is a figure which shows an example of the offset rotary press which has the structure which includes the turn bar device of this invention. This is an example of a schematic top view in which the turn bar device according to the present embodiment has a two-divided structure. This is an example of a schematic top view in which the turn bar device according to the present embodiment has a four-divided structure. This is an example of a schematic top view showing a paper thread when using the C roll of the turn bar device (all paper) according to the present invention. It is an example of the schematic top view which shows the paper threading at the time of using the D roll of the turn bar device (all paper) which concerns on this invention. It is a flowchart explaining the setting procedure of the manual air valve of the turn bar device which concerns on this embodiment. It is a flowchart explaining the setting procedure of the automatic air valve of the turn bar device which concerns on this embodiment. It is a flowchart explaining the air pressure setting procedure of the turn bar device which concerns on this embodiment.

Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. It should be noted that the following embodiments do not unnecessarily limit the invention according to each claim, and all combinations of features described in the embodiments are essential for the means for solving the invention. Is not always.

The newspaper offset rotary press 1 according to the present embodiment includes a paper feeding unit 20, a printing unit 30, a rail frame unit 40, and a folding unit 60. The paper feeding unit 20 and the printing unit 30 are provided in a plurality of rows (five rows in the example shown in FIG. 1). The number of paper feeding units 20, the printing unit 30, the rail frame unit 40, and the folding unit 60 can be arbitrarily changed according to the configuration of the signature to be created.

In the newspaper offset rotary press 1 according to the present embodiment, the paper feed unit 20, the printing unit 30, the rail frame unit 40, the folding unit 60, the post-processing mechanism, and the control unit (not shown) are various known. Since the configuration can be arbitrarily adopted, the description thereof will be omitted.

As shown in FIG. 1, the offset rotary machine provided with the turn bar device according to the present embodiment is a so-called offset rotary machine 1 for newspapers used for printing a newspaper, and FIG. 1 shows one or a plurality of roll papers. A plurality of paper feed units 20 equipped with 10, a plurality of printing units 30 that perform offset printing on both sides of a web W (continuous paper) supplied from the paper feed unit 20, and a web printed from the plurality of printing units 30. W is printed with a rail frame portion 40 having a structure in which web guiding means such as a guide roller, a turn bar device (whole paper) 50, a turn bar device (half-cut) 50', a drag roller, and a bay window are appropriately provided in multiple stages. A folding portion 60 that cuts and folds one or a plurality of web Ws with a predetermined cutoff (cutting length) to create a desired signature, and a post-processing that processes the signature formed by the folding portion 60. It is equipped with a mechanism (not shown).

By having the structure of the rail frame portion 40 as described above, it is possible to arbitrarily set the color surface of printing to a wide variety of locations. In order to put the color side in an arbitrary place, for example, by using a so-called BB machine (black only) for monochrome printing and a turn bar device (all paper) 50 paths, it is possible to change the order of the color side and the monochrome side. There is.

For example, in the configuration of FIG. 1, it is assumed that all the paper rolls 10 provided in the paper feed unit 20 to be used are A rolls, so-called single-sided printing (only one former 70 in the folded part is used. For both sides, the former 70 is used. When performing (using two units), 40 pages and 24 surface color printing is possible. Then, when printing is performed on a normal straight course (the simplest paper-through course that does not use bay windows, etc.), the color side is from the 1st to the 6th, and the 7th to 10th. Becomes a monochrome surface.

As a need for newspapers, color advertisements are often placed on the so-called spread surface, and in the straight course described above, the spread surface is monochrome. In such a case, by using the turn bar device (whole paper) 50, the turn bar device (half-cut) 50', and the bay window to change the place where the color surface enters, the color can be applied not only to the spread surface but also to any place. It is possible to bring a face.

The relationship between the bay window and, for example, the turn bar device (whole paper) 50 is that the bay window is a device for jumping over other web W running papers and changing the color surface location. It passes through the so-called entrance side turn bar of the turn bar device (whole paper) 50 and passes through the bay window. Then, the web W passing through the bay window can bring the color surface to an arbitrary place by passing through the so-called exit side turn bar device (all paper) 50. The turn bar device (half-cut) 50'also differs in the longitudinal size of the turn bar, and the way of passing the web W is the same.

And, in the presence of various print media, for example, in Japan, there are national newspapers, block newspapers, prefectural newspapers, sports newspapers, specialty papers, etc., and with the above-mentioned configuration, etc. It can be set. Since the method of passing the Web W using the turn bar devices 50, 50'from the rail frame portion 40 to the folded portion 60 is known, for example, in Japanese Patent Application Laid-Open No. 2008-265918, detailed description thereof will be omitted.

The printing unit 30 that uses the turnbar device (whole paper) 50 differs depending on each configuration. For example, the frequency of using the turnbar device (whole paper) 50 depends on the number of so-called tower machines (full-color printing machines) and so-called BB machines (monochrome printing machines). Will change. For example, if the number of BB machines is smaller than that of tower machines, BB machines have more opportunities to use the turn bar device (whole paper) 50. The reason is that adding colors to a small number of printing presses does not require a complicated web route.

If the number of tower machines is smaller than that of BB machines, the tower machine has more opportunities to use the turn bar device (whole paper) 50. Depending on each configuration, it is possible to use either a tower machine or a BB machine, but since the BB machine prints in monochrome, the amount of ink and water used is less than that of the full-color tower printing machine. Therefore, when passing through the turn bar device (all paper) 50, there is an advantage that stains and wrinkles due to rubbing of the printed surface are reduced. However, by using the turn bar device (all paper) 50 of the present invention, the tower machine can be used. As with the BB machine, it is possible to reduce the occurrence of stains and wrinkles due to rubbing on the printed surface, even with the amount of ink and water used.

Next, an example of a schematic top view in which the turn bar device according to the present embodiment of FIG. 2 has a two-divided structure will be described. The turn bar device (whole paper) 50 of FIG. 2 has a structure divided into two, and a wall 100 for partitioning the first divided portion 501, the second divided portion 502, the first divided portion 501, and the second divided portion 502. It has an air pipe 80 for sending air to each of the divided portions, branch air pipes 81 and 82, and air valves 91 and 92 for dividing the air. The frame 120, 120'for installing the turn bar device (whole paper) 50, the shaft 110 installed on the frame 120, 120', and the bracket 130 provided on the shaft 110 are provided.

The turn bar device (all paper) 50 having a two-divided structure is effective when the so-called D-roll size wound paper is hung on the OS (operation side) and the DS (drive side). Due to the two-split structure, by closing either of the air valves 91 and 92 for stopping the air on either of the branch air pipes 81 and 82, there are also unused parts where the web does not normally pass. Air was blowing out, but it became possible to eliminate the occurrence of that air loss.

Then, when extra air is not applied to the end of the web, the air balance is good and the tension of the web is stabilized, so that when a plurality of webs overlap and are discharged as a signature at the folding portion 60. In addition, it is possible to stably create well-formed signatures.

The turn bar device (whole paper) 50 having the above-mentioned two-divided structure can be configured by the turn bar device (half-cut) 50', which is half the size, and the turn bar device (half-cut) 50'is a rail. It is a turn bar device that passes after the web W is cut by the slitter provided in the frame portion 40, and is effective when, for example, the C volume is hung on the OS. By forming the turn bar device (half-cut) 50'into a two-piece structure, the main paper side (OS side) has a D roll size, and the turn bar paper side (DS side) has an F roll size (half the size of the D roll). The web is brought to the main paper on the OS side through the turn bar device (half cut) 50', but at that time, by stopping the air in the unused part of the turn bar device (half cut) 50', the occurrence of air loss is eliminated and the web end. By not applying extra air to the web, the air balance is improved and the tension of the web is stabilized, which makes it possible to exert the effect of facilitating the appearance of the web.

The main paper is the running paper on the OS side after being cut by the slitter provided on the rail frame portion 40, and the turn bar paper is the running paper on the DS side after being cut by the slitter. The turn bar paper uses two turn bars and is superposed on the running paper on the OS side.

The structure of the turn bar device (whole paper) 50 has been described above, but the structure can be similarly configured in the turn bar device (half-cut) 50'. The diameter of the turnbar device is usually Φ50 mm to Φ100 mm, but the diameter is not limited to that, and it is possible to manufacture a turnbar device having a different diameter depending on the trouble situation such as wrinkles of the web W.

Although the wall 100, which is a divided portion of the turnbar device, is welded, it does not need to be welded, and any method can be used as long as the turnbar device can be formed into a divided structure by making the wall 100 by a method alternative to welding. For example, the structure may be such that the partition plate is installed at an appropriate place.

Next, an example of a schematic top view in which the turn bar device according to the present embodiment of FIG. 3 has a four-divided structure will be described. The turn bar device (whole paper) 50 of FIG. 3 has a structure divided into four, and the first division portion 511, the second division portion 512, the third division portion 513, the fourth division portion 514, and the first division portion 511. And a wall 100 for partitioning the second division portion 512, a wall 100 for partitioning the second division portion 512 and the third division portion 513, and a wall 100 for partitioning the third division portion 513 and the fourth division portion 514. There is. Then, it has an air pipe 80 for sending air to each divided portion, a branch air pipe 83, 84, 85, 86, and an air valve 93, 94, 95, 96 for branching the air flow. There is. The frame 120, 120'for installing the turn bar device (whole paper) 50, the shaft 110 installed on the frame 120, 120', and the bracket 130 provided on the shaft 110 are provided.

The turn bar device (all paper) 50 having a 4-split structure is used to hang so-called C-roll size paper on the OS (operation side), DS (drive side), and center D (at the center of the paper feed section). It is effective when the paper roll is attached). Due to the 4-split structure, in the case of winding C, in order to make the 1st split section 511 or the 4th split section 514 unused, to stop the air of either of the branch air pipes 83 and 86. By closing the air valves 93 and 96 of the above, air was blown out even in unused places where the web W normally did not pass, but it became possible to eliminate the occurrence of air loss.

Then, when extra air is not applied to the end of the web, the air balance is good and the tension of the web is stabilized, so that when a plurality of webs overlap and are discharged as a signature at the folding portion 60. In addition, it is possible to stably create signatures in a state where the appearance is easy to arrange.

The four-divided structure of the turn bar device (whole paper) 50 is described above, but the structure can be similarly configured by the turn bar device (half-cut) 50'. The diameter of the turnbar device is usually Φ50 mm to Φ100 mm, but the diameter is not limited to that, and it is possible to manufacture a turnbar device having a different diameter depending on the trouble situation such as wrinkles of the web W.

Although the wall 100, which is a divided portion of the turnbar device, is welded, it does not need to be welded, and any method can be used as long as the turnbar device can be formed into a divided structure by making the wall 100 by a method alternative to welding. For example, the structure may be such that the partition plate is installed at an appropriate place.

Next, an example of a schematic top view showing a paper thread when using the C roll of the turn bar device (whole paper) according to the present invention of FIG. 4 will be described. For example, when the turn bar device (whole paper) 50 in the configuration shown in FIG. 3 is hung with the C-roll WC (the part shown by the thick line) as an OS, the first division portion 511 becomes an unused part, and the place where air is blown out is There are three locations: a second division portion 512, a third division portion 513, and a fourth division portion 514. By closing the air valve 93, the air feed to the branch air pipe 83 is eliminated, and air is not blown from the hole of the first division portion 511. Then, as shown in FIG. 4, air is not blown out from the first division portion 511, which is an unused portion through which the running paper C-roll WC does not pass, so that air loss is eliminated and extra air is not generated at the web end. It became possible to prevent the web from being hung up, and it became possible to stabilize the tension of the web by improving the air balance without causing problems due to air.

Conventionally, since the turn bar device did not have a split structure even from the first split portion 511, which is an unused part in FIG. 4, air is blown out from unnecessary places, resulting in poor air balance and tension. It wasn't stable. Since the air was blocked by taping the unused part, there were problems of the printing preparation time for attaching the taping and the work time after removing the taping. With the need for labor saving, I had to do extra work, but I no longer have to spend that extra time.

Then, according to the winding paper of various paper widths passing through the turn bar, air is prevented from blowing out from both ends in the width direction of the winding paper to the portions exceeding the predetermined ranges in the longitudinal direction of the turn bar. As described in FIG. 4, the portion that prevents the air from blowing out refers to the outside of the wall 100 for dividing the first division portion 511 and the second division portion 512 (the side closer to the frame 120). This is the part where the C volume WC does not pass.

Next, an example of a schematic top view showing a paper thread when using the D roll of the turn bar device (whole paper) according to the present invention of FIG. 5 will be described. For example, when the turn bar device (all paper) 50 having the structure shown in FIG. 3 is centered (the winding paper is attached to the center position of the paper feed section) of the traveling paper, the D-roll WD (the portion indicated by the thick line), the first is The 1-division portion 511 and the 4th division portion 514 are unused locations, and the air is blown out at two locations, the second division portion 512 and the third division portion 513. By closing the air valves 93 and 96, the air feed to the branch air pipes 83 and 86 is eliminated, and air is not blown from the holes of the first division portion 511 and the fourth division portion 514. Then, as shown in FIG. 5, the occurrence of air loss is eliminated by preventing air from being blown out from the first division portion 511 and the fourth division portion 514, which are unused parts through which the traveling paper D-roll WD does not pass, and the web. It is possible to prevent extra air from being applied to the edges, and it is possible to stabilize the tension of the web by improving the air balance without causing problems due to air.

Then, according to the winding paper of various paper widths passing through the turn bar, air is prevented from being blown out from both ends in the width direction of the winding paper to the portions exceeding a predetermined range in the longitudinal direction of the turn bar. As described in FIG. 5, the portions that prevent the air from blowing out are outside the wall 100 for dividing the first division portion 511 and the second division portion 512 (on the side closer to the frame 120). It points to the outside (the side closer to the frame 120') than the wall 100 for dividing the third division portion 513 and the fourth division portion 514, and is a portion through which the D-winding WD does not pass.

The number of divisions of the turn bar device described above is an example, and the number of divisions may be further increased. For example, if it is divided into eight parts, it is possible to handle a so-called 7/8 roll paper roll size. At present, the general sizes of rolls used in newspaper offset rotary presses are so-called A, C, and D rolls, but with turn bar devices that can handle F rolls, Berliner sizes, 7/8 rolls, etc. Become. Since the detailed size of the roll paper is known, the description thereof will be omitted.

As for the conventional turn bar device, since the contents such as blowing air from the small hole of the turn bar device are publicized in various publications such as Patent No. 3058880, detailed explanation is omitted, but the web is wound. A small hole for blowing air is provided only in the area of the part.

The above content mainly explains the merits of dividing the turnbar device based on the roll-up paper size, but not only the roll-up paper size but also the roll-up paper has a difference depending on the basis weight. For example, in the case of newspaper roll-up paper, ordinary newspaper, There are lightweight newspapers, ultra-lightweight newspapers, ultra-lightweight newspapers, high-white newspapers, and the like. Furthermore, at present, so-called "loaf paper" that reduces the amount of pulp that is the raw material of paper is also often used. The reduction of pulp also leads to the protection of valuable forest resources, but even if the basis weight is the same as that of ordinary roll paper, there are differences in strength, ink, and water adhesion, etc. When air is blown out from the place of use, the air balance becomes poor, and there is a great possibility that problems such as difficulty in setting the web position to be an appropriate place will become noticeable.

Therefore, the merit of making the turnbar device a multi-divided structure becomes even greater, and the turnbar device that can blow out air only to the place where the web W passes has a good air balance even when using various materials. , The tension of the web W is stable, and it is possible to realize high-quality printing with no variation in quality.

Then, various turn bar devices having a multi-divided structure may be manufactured so that the turn bar device can be attached and detached as appropriate. The turnbar device is bolted by brackets.

Subsequently, the procedure for setting the air valve according to the present embodiment will be described with reference to the flowchart. FIG. 6 is a flowchart illustrating a procedure for setting a manual air valve of the turn bar device according to the present embodiment. Further, FIG. 7 is a flowchart illustrating a procedure for setting an automatic air valve of the turn bar device according to the present embodiment.

First, a routine relating to manual setting of the air valve will be described with reference to FIG. First, the air valve setting routine is started (step S10). Next, the place where the turn bar is used is confirmed (step S11). Next, the air valve at the location to be used is manually opened and closed (step S12). For example, as described in FIG. 4, by closing the air valve 93 and stopping the air feed to the branch air pipe 83, it is possible to stop the air blowout from the first division portion 511 and prevent air loss. .. Next, printing is started and air is turned on (step S13). Then, printing is completed and the air is turned off (step S14). Next, all the closed air valves are manually opened (step S15). Then, the manual setting routine of the air valve is terminated (step S16).

In this way, by opening the closed air valve when printing is completed, there is a mistake that air does not come out when the so-called A-roll paper, which is normally used frequently, is used in the next printing. It becomes possible to use it without doing.

For the manual opening and closing of the air valve, a status confirmation means such as a proximity switch may be used to check the opening / closing status.

Then, the open / closed state of the air valve may be confirmed on a graphic panel (not shown) installed at the folding part or the like. Since it is well known that the on / off status of the slitter used when cutting the roll paper in half can also be confirmed on the graphic panel, detailed explanation is omitted, but the same confirmation means as the status confirmation means such as the slitter. May be used.

Next, a routine related to automatic setting of the air valve will be described with reference to FIG. 7. First, the air valve setting routine is started (step S20). Next, information is acquired from the host system (step S21). Next, the air valve at the location to be used is automatically opened and closed (step S22). Next, printing is started and air is turned on (step S23). Then, printing is finished and the air is turned off (step S24). Next, the presence or absence of the next plate (next print medium) is confirmed (step S25), and if there is no next plate, the air valve is fully opened with the setting to open all parts (step S26), and the air valve is automatically opened. The setting routine ends (step S27).

On the other hand, in step S25, the presence or absence of the next version (next print medium) is confirmed (step S25), and if there is a next version, the process returns to acquiring information from the host system (step S21), and steps S22 to step. Perform S24 to check for the presence or absence of the next plate (next print medium) (step S25), and if there is no next plate, set the air valve to fully open with the setting to open all points (step S26), and then The automatic setting routine of the air valve is terminated (step S27).

In this way, the air valve can be opened and closed automatically, which contributes to shortening the printing preparation time and exerts a great effect on the needs for labor saving.

As for the automatic opening / closing method of the air valve, by providing an electric automatic operation valve, the air valve can be opened / closed by remote control instead of manual operation.

Subsequently, the air pressure setting procedure of the turn bar device according to the present embodiment will be described with reference to the flowchart. FIG. 8 is a flowchart illustrating a procedure for setting an air pressure of the turn bar device according to the present embodiment.

First, a routine related to automatic setting of air pressure will be described with reference to FIG. First, the air pressure setting routine is started (step S30). Next, information is acquired from the host system (step S31). Next, the air pressure based on the usage conditions is automatically set (step S32). Next, printing is started and air is turned on (step S33). Then, printing is finished and the air is turned off (step S34). Next, the presence or absence of the next plate (next print medium) is confirmed (step S35), and if there is no next plate, the automatic air pressure setting routine is terminated (step S36).

Then, the presence or absence of the next version (next print medium) is confirmed (step S35), and if there is a next version, the process returns to the acquisition of information from the higher-level system (step S31), steps S32 to S34 are performed, and then the next It is confirmed whether or not there is a print medium (next plate) in (step S35), and if there is no next plate, the automatic air pressure setting routine is terminated (step S36).

The air compressor used for automatic air pressure setting preferably uses an inverter control method by adjusting the pressure set value. Since the minimum required power is supplied according to the operating load, there is an advantage that power loss is small and energy-saving operation is possible.

And, the automatic air pressure setting may be equipped with a graphic panel that can manually raise and lower the air pressure so that it can be operated manually, and the installation location is a rail frame equipped with turn bar devices 50, 50'. Part 40 is preferable.

Then, while using air, the graphic panel displays "in operation", etc., and the "in operation" display is set to "on" or "blinking", which repeats turning on and off in a short period of time. If not, it may be set to "off".

Then, when the air pressure is set, by collecting data of the optimum air pressure that suits the situation when using various printing media and various materials, it is learned and registered in the host system, and when printing from the next time onward. Optimal data may be used by feedback control or feedforward control.

In the above-described embodiment, the graphic panel is provided on the rail frame portion 40, but the present invention is not limited to this, and the number and location of the graphic panels to be installed can be arbitrarily changed. Further, the graphic panel may be configured to be a portable tablet.

The fact that the labor of workers can be saved leads to labor saving, the shortage of personnel is an issue, and the need for labor saving is increasing. Therefore, shortening the working time is in line with the needs of customers. This is a considerable improvement in workability.

Furthermore, by shortening the print preparation time and post-working time, it is possible to prevent work delays (delays in shipping time), and if shipping is delayed, printed matter (newspapers) that are shipped far away can be delivered by trucks. If the time is delayed, the delivery to each store will be delayed, which will cause a great deal of inconvenience. Since the printing time must be adhered to, preventing work delays is also a great effect.

As a result, it has become possible to meet the needs of customers by shortening the print preparation time and post-work work time when using the turnbar device regardless of whether it is a newcomer or a veteran, and improving workability. ..

Although the preferred embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the scope described in the above-described embodiments. It goes without saying that various changes or improvements can be made to each of the above embodiments.

1 Offset rotary press for newspapers, 10 winding paper, 20 paper feed section, 30 printing section, 40 rail frame section, 50 turn bar device (whole paper), 50'turn bar device (half cut), 60 fold section, 70 former, 80 air piping, 81, 82, 83, 84, 85, 86 branch air piping, 90 (91, 92, 93, 94, 95, 96) air valve, 100 wall, 110 axis, 120, 120'frame, 130 bracket, 501st Divided part, 502 2nd divided part, 511 1st divided part, 512 2nd divided part, 513 3rd divided part, 514 4th divided part, W web, WC C volume, WD D volume

Claims (6)

A turn bar with a large number of air blowing regions provided in the longitudinal direction.
A turn bar characterized in that air can be selected so as not to be blown out from a part of the blown-out areas of the air so as to correspond to various paper widths passing through the turn bar. The first aspect of the present invention is characterized in that air is prevented from blowing out from both ends of the winding paper in a portion exceeding a predetermined range in the longitudinal direction of the turnbar according to the winding paper having various paper widths passing through the turn bar. The turn bar described. Among the large number of air blowing regions, the winding paper does not pass through and the air blowout is not required to blow out air. The feature is that the on-off valve can be remotely controlled. The turn bar according to claim 1 or 2. The turn bar according to any one of claims 1 to 3, wherein the pressure of the air blown from the turn bar can be adjusted. The turn bar is any of claims 1 to 4, wherein the turn bar is a turn bar used in a rotary press for printing, and is used when a plurality of rolls of various paper widths are stacked in an appropriate pattern. The turn bar described in the crab. A rotary press for newspaper printing provided with the turn bar according to claim 5.

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