JP4703756B2 - Folding machine and rotary printing machine - Google Patents

Description

The present invention relates to a folding machine and a rotary printing machine, and in particular, when a pair of folding rollers perform second folding of a running paper for newspaper , it is effective for folding such as a top fold generated at the edge of the cut newspaper. The present invention relates to a folding machine and a rotary printing machine that can be prevented.

(Newspaper press related to the present invention)
Generally, a newspaper rotary press is roughly classified into a printing machine (printing unit) and a folding machine (folding unit).
For example, newspaper offset rotary press 100 shown in FIG. 5, a printing machine comprising a plurality of printing units for printing on newspaper traveling paper 10, the printed plurality of newspaper for running paper 10 at a predetermined travel route A rail frame unit that travels and a folding machine 110 that performs first folding, cutting, second folding, and paper discharge on the plurality of newspaper traveling papers 10 that are stacked are provided.

(Folding machine related to the present invention)
Further, for example, as shown in FIG. 6, the folding machine 110 has a configuration in which folding units are provided on the operation side and the driving side, respectively. Each folding unit includes a drag roller 121, a triangular plate 122, a forming roller 123, a nipping roller 124, a rotary folder 125, a delivery fan 126, a delivery belt 127, and the like. The rotary folder 125 includes a folding cylinder 101, a saw cylinder 102, a pair of folding rollers 103, and the like.
In this folding machine 110, the triangular plate 122 performs a first fold on a plurality of newspaper running papers 10 that are stacked, and a rotary folder 125 cuts the first folded newspaper running paper 10, Folding is performed, and the delivery fan 126 and the delivery belt 127 discharge the newspaper 11.

(Rotary folder related to the present invention)
Next, the rotary folder 125 will be described with reference to the drawings.
FIG. 7: has shown the schematic front view of the principal part of the rotary folder of the folding machine relevant to this invention.
In FIG. 7, a rotary folder 125 includes a pair of blades 104, a folding cylinder 101 having a cutting rubber 3 and a needle device 2, a saw cylinder 102 having a pair of saw blades 120, a pair of folding rollers 103, and the like. Yes.
In FIG. 7, the newspaper 11 folded by the blade 104 is omitted. Further, the cut traveling paper for newspaper 10 is appropriately referred to as newspaper 11.

(Folding cylinder related to the present invention)
The folding cylinder 101 is provided along the axial direction so that the pair of blades 104 are point-symmetric with respect to the axial center of the folding cylinder 101. The blade 104 is attached to a blade shaft (not shown), and the tip of the blade 104 moves along a hypocycloid curve as the blade shaft rotates.
In the folding cylinder 101, the cutting rubber 3 and the needle device 2 are accommodated in the groove 20, that is, the pair of cutting rubber 3 and the needle device 2 are point-symmetric with respect to the axis of the folding cylinder 101. It is provided along the axial direction.

  As shown in FIG. 8, the needle device 2 includes a needle 21, a needle shaft 22, a needle arm 23, and the like. The end of the needle shaft 22 is connected to a needle cam roller (not shown), a plurality of needle arms 23 are screwed onto the needle shaft 22, and the needle 21 is fixed to the tip of the needle arm 23. Yes. The movement of the needle 21 is interlocked with the rotation of the folding cylinder 101, and moves in and out of the folding cylinder 101 at a predetermined position during the rotation.

The cutting rubber 3 has a bar shape with a substantially square cross section. The cutting rubber 3 is fixed to the folding cylinder 101 by placing the bottom surface on the top holder 31 and sandwiching the side surface between the rubber pressing member 33 and the rubber pressing member 140.
The top holder 31 is screwed to the folding cylinder 101 so as to be received in the groove 20. The top holder 31 has an outer surface that is an outer peripheral surface of the folding cylinder 101 and a hole 311 for rotating the needle arm 23.
The rubber pressing member 33 is screwed to the top holder 31 so as to be received in the groove 20. The rubber pressing member 33 has an outer surface serving as an outer peripheral surface of the folding cylinder 101 and an opening 331 for rotating the needle arm 23.

On the rotational direction side of the cutting rubber 3, the rubber pressing member 140 is screwed to the ground side holder 32 so as to be received in the groove 20. The rubber pressing member 140 has an outer surface that is an outer peripheral surface of the folding cylinder 101.
The ground side holder 32 is screwed to the folding cylinder 101 so as to be received in the groove 20. The ground side holder 32 has an outer surface that is an outer peripheral surface of the folding cylinder 101 on the ground side of the rubber pressing member 140.
The top holder 31 and the ground holder 32 are separate parts, but the present invention is not limited to this. For example, a holder in which the top holder 31 and the ground holder 32 are integrally formed ( (Not shown).

(Saw cylinder related to the present invention)
As shown in FIG. 7, the saw cylinder 102 is provided along the axial direction so that the pair of saw blades 120 are point-symmetric with respect to the axis of the saw cylinder 102. The saw blade 120 is provided in the saw body 102 via a saw blade.

The newspaper offset rotary printing press 100 configured as described above feeds the newspaper travel paper 10 printed by the printing press into the folding machine 110 while being guided by the rail frame. Next, the folding machine 110 is first folded by a triangular plate 122 provided on the upper part of the folding machine 110, and then guided between the folding cylinder 101 and the saw cylinder 102.

Then, provided the folding cylinder 101, the needle 21 swings protruding at a predetermined timing, pierce appropriate position corresponding margin on the printed surface of newspaper traveling paper 10 guided, newspaper traveling paper 10 folding cylinder It fixes to the outer peripheral surface of 101. As a result, the newspaper travel paper 10 fixed by the needle 21 is wound around the outer peripheral surface of the folding cylinder 101 as the folding cylinder 101 rotates. Subsequently, when the saw blade 120 provided in the saw cylinder 102 and the cutting rubber 3 provided in the folding cylinder 101 rotate and move together with the rotation of the saw cylinder 102 and the folding cylinder 101 and face each other, they contact the folding cylinder 101. The newspaper traveling paper 10 wound around is cut into a predetermined length of the newspaper 11.

Here, the needle 21 protruding from the folding cylinder 101 is retracted into the folding cylinder 101 at almost the same timing as the saw blade 120 and the cutting rubber 3 cut the newspaper running paper 10 wound around the folding cylinder 101. Get out of the newspaper 11. Further, at approximately the same timing as this, the blade 104 provided in the folding cylinder 101 pushes the ground-side edge portion and the top-side edge portion of the cut newspaper paper 11 downward and pushes the pushed newspaper. 11 is pushed into the gap between the pair of folding rollers 103, and the pair of rotating folding rollers 103 moves the newspaper 11 downward, whereby the newspaper sheet 11 is folded in the second direction.

  Next, in the web offset press 100 for newspaper, the delivery fan 126 receives the second folded newspaper 11 discharged from the pair of folding rollers 103, and the delivery fan 126 rotates, whereby the newspaper 11 is delivered to the delivery belt. 127, and the second folded newspaper 11 is discharged out of the folding machine 110.

  By the way, in the newspaper offset rotary printing press 100, when the pair of folding rollers 103 performs the second folding of the newspaper 11, the folded end of the newspaper 11 is broken. There are mainly four types of folds: Pella side fold, Pella side fold, bag side fold, and bag side fold.

Next, a situation in which the fold occurs will be described.
First, the top edge of the newspaper 11 is cut and free, and the ground edge is free when the needle 21 is pulled out. Further, the newspaper 11 is folded down by being sent downward while being sandwiched between the pair of folding rollers 103. At this time, an inertial force in a direction away from the folding roller 103 acts on the ground-side end portion of the newspaper 11, and an inertial force in a direction toward the folding roller 103 acts on the top-side end portion. Further, the peripheral speed of the folding roller 103 is set to be higher than the peripheral speed of the folding cylinder 101 in order to prevent a collision between the currently folded second newspaper 11 and the next newspaper 11.
In order to guide both ends in a free state, a plurality of top guides and ground guides (these guides are also called anti-dog ear guides) are provided, although not shown. It has been.

Next, as shown in FIG. 8, when entering the final stage of the second fold, that is, the cross-sectional shape surrounded by the pair of folding rollers 103 and the folding cylinder 101 is a substantially triangular space (appropriately a triangular prism-shaped space and When the top end and the ground end of the newspaper 11 enter the abbreviation, the both end portions are completely free and move to the center side.
Subsequently, the both end portions moved to the center side try to stand up vertically, but come into contact with the outer surface of the rubber pressing member 140 and are curved in a substantially arc shape. At this time, it is assumed that the folding occurs or the folding occurs due to a subtle factor related to the contact.

  The above-mentioned subtle factors include a disordered air flow caused by the rotation of the folding cylinder 101 and the pair of folding rollers 103 in the triangular prism space, and occurs when the newspaper 11 is drawn into the pair of folding rollers 103. Such as the flow of air, the inertial force at the top end and the ground end that have become free, the force drawn into the pair of folding rollers 103, the rigidity of the newspaper 11, the material related to the habit, And the printing status related to the ink amount and the dampening water amount and the number of pages of the newspaper 11. That is, due to subtle factors related to the contact, the newspaper 11 is ramped at the top edge or the ground edge, and the leading edge of the newspaper 11 flutters and bends as it is, is caught on the surface of the folding roller 103, is caught and passes. As a result, unnecessary folding occurs at the top edge and the ground edge of the newspaper 11.

  As a technique for preventing the occurrence of the unnecessary folding, although not shown, a technique for adjusting the shape and gap of the folding roller 103, a technique for adjusting the shape and position of the guide of the second folded newspaper 11, or In a triangular prism-shaped space, a technique for intermittently or continuously blowing air in a direction in which the top end or the ground end of the newspaper 11 is pressed against the folding cylinder 101 (also referred to as a technique using air blowing means). And a technique using a small brush or brush roll (also called a technique using a brush guide) has been proposed.

Various techniques related to the present invention have been proposed.
For example, in Patent Document 1, at least one of a pair of folding rollers is formed in the same diameter as the roller body and the roller body, and is coaxial with one end shaft portion of the roller body on the side of the propeller of the passing running paper. In addition, a technology of a folding roller for a folding device of a rotary press comprising a roller portion (a roller portion having a recessed portion) that is fitted to a roller body so that the phase in the circumferential direction can be adjusted is disclosed. ing. The pair of folding rollers is also called a timed roller, and can prevent the ceiling from breaking.

  In Patent Document 2, in a folding machine of a rotary printing press provided with a pair of folding rollers for performing second folding of printing paper, at least a part is surrounded by a folding cylinder and a pair of folding rollers. There has been disclosed a folding machine technology for a rotary printing press characterized in that a folding prevention guide having a shape that is provided in the space and has a shape that smoothly guides printing paper to a folding roller is provided.

  Moreover, in patent document 3, the recessed part is formed over the axial direction of a folding cylinder in the area | region between the folding blade in a folding cylinder peripheral surface, and the needle apparatus in the folding cylinder rotation direction immediately upstream of a folding blade. The technology of the web folding apparatus characterized by this is disclosed.

  Patent Document 4 discloses a pair of a rotatable folding cylinder, a saw cylinder that cuts a web in cooperation with the folding cylinder, and a folding book that is provided downstream of the folding cylinder and sandwiches the web to form a folded book. In the web folding apparatus comprising the folding roller, a folding cylinder is provided with a first guide surface that is recessed from the outer peripheral surface having a predetermined length along the axial direction from the bag side to the peller side of the folding book. The technology of the web folding apparatus characterized by the above is disclosed.

No. 07-24368 JP 2007-276932 A Japanese Patent No. 4227925 JP 2008-19090 A

However, as described above, it is assumed that a fold or a fold occurs due to a subtle factor related to the contact with the outer surface of the rubber pressing member 140, and the operation condition (for example, a page of the newspaper 11). Depending on the number, the setting of the gap between the folding rollers 103, the type of newspaper 11 to be used, etc., the edge of the paper could not be suppressed, and a fold such as a sky fold occurred.
Further, for example, when the timing at which the pair of folding rollers 103 sandwich the newspaper 11 fluctuates due to an increase in the speed of the newspaper offset rotary printing press 100 or the like, the top edge of the sandwiched newspaper 11 becomes the following: In some cases, the newspaper 11 collides with the paper edge on the ground side.
That is, there is a problem in that the occurrence of unnecessary folding cannot be prevented to a more complete level.

In addition, although the technique of patent documents 1-4 is a technique relevant to this invention, it was a technique which cannot solve said subject. In particular, the technologies of Patent Documents 3 and 4 are technologies that are completely different in the recognition of the cause of the breakage and the solving means .

  The present invention has been proposed in order to solve the above-described problems. The paper edge that is ramped up is smoothly raised and guided to the folding roller, and the paper edge is the paper edge of the next newspaper. It is an object of the present invention to provide a folding machine and a rotary printing machine that can prevent the occurrence of folding to a more complete level by effectively preventing rear-end collision.

In order to achieve the above object, a folding machine of the present invention includes a blade, a cutting rubber, a rubber pressing member for fixing the cutting rubber, a folding cylinder having a needle device, a saw cylinder having a saw blade, and a pair of folding rollers. A folding machine for cutting and folding newspaper travel paper, wherein the rubber pressing member is in a groove of the folding cylinder in which the needle device is provided, and on the rotational direction side of the cutting rubber, the cutting rubber When provided in direct contact, the rubber pressing member, a recess recessed from the outer peripheral surface of the front Kiorido, formed over the entire Pella side from the bag side of the new 聞紙, the needle device is the folding The concave portion is positioned below the needle device when positioned above the pair of folding rollers by rotation of the cylinder .

Further, rotary printing press of the present invention, a plurality of printing press for printing newspapers traveling paper and, in a rotary printing press with a folding machine for folding and cutting a printed the newspaper traveling paper, said folding machine However, it is set as the structure which is a folding machine as described in any one of the said Claims 1-3 .

  According to the folding machine and rotary printing machine of the present invention, it is effective that the end of the paper that is running up is smoothly raised and guided to the folding roller, and the end of the paper collides with the end of the next newspaper. By preventing the breakage, the occurrence of folds can be prevented to a more complete level. As a result, it is possible to reduce the adjustment burden on the operator and the loss of waste paper.

FIG. 1: has shown the general | schematic expanded cross section of the principal part for demonstrating a folding cylinder of the folding machine concerning one Embodiment of this invention. FIG. 2: has shown the schematic plan view of the principal part for demonstrating the folding cylinder of the folding machine concerning one Embodiment of this invention. FIG. 3: has shown schematic expanded sectional drawing of the principal part for demonstrating the rubber pressing member of the folding machine concerning one Embodiment of this invention. FIG. 4: has shown schematic expanded sectional drawing of the principal part for demonstrating the rubber pressing member of the application example of the folding machine concerning one Embodiment of this invention. FIG. 5 shows a schematic front view of the main part of a rotary printing press related to the present invention. FIG. 6: has shown the schematic front view of the principal part of the folding machine relevant to this invention. FIG. 7: has shown the schematic front view of the principal part of the rotary folder of the folding machine relevant to this invention. FIG. 8: has shown the schematic front view of the principal part of a rotary folder for demonstrating the subject of the folding machine relevant to this invention.

[One Embodiment of Folding Machine]
FIG. 1: has shown the general | schematic expanded cross section of the principal part for demonstrating a folding cylinder of the folding machine concerning one Embodiment of this invention.
Moreover, FIG. 2 has shown the schematic plan view of the principal part for demonstrating the folding cylinder of the folding machine concerning one Embodiment of this invention.
Further, FIG. 3 shows a schematic enlarged cross-sectional view of the main part for explaining the rubber pressing member of the folding machine according to the embodiment of the present invention.
1 to 3, the folding machine of the present embodiment includes a folding cylinder 1 having a blade 104, a cutting rubber 3 and a needle device 2, a saw cylinder 102 having a saw blade 120, a pair of folding rollers 103, and the like. The newspaper traveling paper 10 is cut and bent. Moreover, the folding machine is different from the folding machine 110 described above (see FIGS. 6-8), the folding cylinder 1, instead of the rubber pressing member 140, such that with a rubber pressing member 4 is different. The other configuration of the present embodiment is almost the same as that of the folding machine 110.
Therefore, in FIGS. 1-3, the same code | symbol is attached | subjected about the component similar to FIGS. 6-8, and the detailed description is abbreviate | omitted.

(Folded body)
The folding cylinder 1 is in the groove 20 of the folding cylinder 1 in which the needle device 2 is provided, and a recess 41 that is recessed from the outer peripheral surface of the folding cylinder 1 is formed in the bag of the newspaper 11 on the rotational direction side of the cutting rubber 3. It is formed from the side to the peller side. As shown in FIGS. 1 and 2, the recess 41 is formed in the rubber pressing member 4 from the bag side of the newspaper 11 to the entire peller side.
In the present embodiment, a recess 41 is formed in the rubber pressing member 4 on the rotation direction side for fixing the cutting rubber 3. When viewed from above, the rubber pressing member 4 has an elongated, substantially rectangular shape, and is used for screwing the needle arm 23 to the needle shaft 22 at a position corresponding to the needle arm 23 or adjusting the angle of the needle arm 23. A long hole 42 is formed (see FIG. 2). Thus, by forming the recess 41 only in the rubber pressing member 4, the structure can be simplified and the manufacturing cost can be reduced. Further, the width dimension L of the rectangular rubber pressing member 4 is usually several tens mm, and in this embodiment, for example, 50 mm.

In addition, in this embodiment, although the recessed part 41 is formed only in the rubber pressing member 4, it is not limited to this. For example, although not shown, the concave portion 41 may be formed in the ground side holder 32 to which the rubber pressing member 4 is attached and the rubber pressing member 4. Alternatively, the recess 41 may be formed only in the ground side holder 32. If it does in this way, the freedom degree of design, such as the position of the recessed part 41, can be improved.

Moreover, the cross-sectional shape of the recessed part 41 is a mountain shape (refer FIG. 3). That is, this chevron shape is recessed from the virtual outer peripheral surface of the folding cylinder 1 by a distance H when the substantially central portion in the width direction of the rubber pressing member 4 is positioned on the virtual center line of the axial center of the pair of folding rollers 103. As a shape. Here, the distance H is usually several mm to several tens of mm, and is 6 mm in the present embodiment, for example.
In the present embodiment, the pair of slopes that form the recess 41 are flat surfaces, but the present invention is not limited to this. For example, although not shown, it may be a curved surface curved toward the inside or the outside of the folding cylinder 1.

The material of the rubber pressing member 4 is usually a metal.
Here, the material of the rubber pressing member 4 is not limited to the above metal, and for example, a material having a small friction coefficient or a material excellent in wear resistance can be used. Or the metal etc. which coated the abrasion-resistant material, such as a ceramic, in the surface which the edge parts of the newspaper 11, such as the recessed part 41 contact, can be used.
Preferably, the material of the rubber pressing member 4 for fixing the cutting rubber 3 may be a resin material or a composite material made of resin and metal. If it does in this way, a fluororesin, 6 nylon, etc. with a small friction coefficient can be used, and the damage to the newspaper 11 etc. can be suppressed.

Preferably, although not shown, the above-mentioned timed roller (see Patent Document 1), anti-dog ear guide (see Patent Document 2), breakage prevention guide (see Patent Document 2), air spraying means, and Further, it may be configured to include at least one of the brush guides. In this way, by combining with the conventional technique, it is possible to effectively suppress the paper edge rampage of the newspaper 11 (for example, the rampage before entering the final stage of the second folding).
In addition, the other structure is as substantially the same as the folding machine 110 (refer FIGS. 6-8) mentioned above.

Next, the operation of the folder configured as described above will be described.
As described above, the folding machine according to the present embodiment first folds the newspaper travel paper 10 fed from the rail frame portion with the triangular plate 122 and then guides it between the folding cylinder 1 and the saw cylinder 102. .
Next, the needle 21 provided on the folding cylinder 1 and swinging and projecting at a predetermined timing is pierced at an appropriate position corresponding to the margin of the printing surface of the guided newspaper traveling paper 10, and the newspaper traveling paper 10 is folded. It fixes to the outer peripheral surface of 101. As a result, the newspaper travel paper 10 fixed by the needle 21 is wound around the outer peripheral surface of the folding cylinder 1 as the folding cylinder 1 rotates. Subsequently, when the saw blade 120 provided on the saw cylinder 102 and the cutting rubber 3 provided on the folding cylinder 1 rotate and move together with the rotation of the saw cylinder 102 and the folding cylinder 1, they face each other and come into contact with the folding cylinder 1. The newspaper traveling paper 10 wound around is cut into a predetermined length of the newspaper 11.

Here, the needle 21 protruding from the folding cylinder 1 is moved into the folding cylinder 1 at almost the same timing as the saw blade 120 and the cutting rubber 3 cut the newspaper traveling paper 10 wound around the folding cylinder 1. Pull out from the retracted newspaper 11. Further, at approximately the same timing as this, the blade 104 provided on the folding cylinder 1 pushes the ground-side edge portion and the top-side edge portion of the cut newspaper paper 11 downward and pushes the pushed newspaper paper. 11 is pushed into the gap between the pair of folding rollers 103, and the pair of rotating folding rollers 103 moves the newspaper 11 downward, whereby the second folding of the newspaper 11 starts.

Next, as shown in FIG. 1, when entering the final stage of the second fold, that is, the cross-sectional shape surrounded by the pair of folding rollers 103 and the folding cylinder 1 is a substantially triangular space (appropriately a triangular prism-shaped space and When the top end and the ground end of the newspaper 11 enter the abbreviation, the both end portions are completely free and move to the center side. As shown in FIG. 1, when the needle device 2 is positioned above the pair of folding rollers 103 due to the rotation of the folding cylinder 1, the recess 41 is positioned below the needle device 2.

Subsequently, both end portions of the newspaper 11 moved to the center side try to rise vertically. At this time, in this embodiment, the concave paper 41 formed in the rubber pressing member 4 can smoothly raise the paper end (both cut portions) that is running up, and then the paper end smoothly moves to the folding roller 103. Can lead. Furthermore, for example, even when the timing at which the pair of folding rollers 103 sandwich the newspaper 11 slightly fluctuates due to an increase in the printing speed or the like, the end of the paper that is running up is smoothly raised, Since the paper can be smoothly guided to the folding roller 103, it is possible to effectively avoid the problem that the top edge of the sandwiched newspaper 11 collides with the bottom edge of the next newspaper 11. .

In other words, while the conventional technique has been aimed at how to suppress the paper edge rampage and thereby prevent the occurrence of folding, this embodiment is rampant by changing the way of thinking. The paper edge can be raised smoothly, and then the paper edge can be smoothly guided to the folding roller 103. As a result, unnecessary folding (particularly ceiling folding) can be effectively prevented to a further complete level.
The techniques of Patent Documents 3 and 4 described above are techniques for suppressing the rampage before entering the final stage of the second fold, whereas the present embodiment enters the final stage of the second fold. After that, the paper edge that is rampant can be raised smoothly, and then the paper edge can be smoothly guided to the folding roller 103. In this respect and the like, the technique of the present embodiment and the techniques of Patent Documents 3 and 4 are completely different techniques in recognition of the cause of occurrence of breakage and solution means.

As described above, according to the folding machine of the present embodiment, the ramped paper edge rises smoothly and is guided to the folding roller 103, and the paper edge collides with the paper edge of the next newspaper 11. By effectively preventing the occurrence of folds, it is possible to prevent the occurrence of folding to a more complete level. As a result, it is possible to reduce the adjustment burden on the operator and the loss of waste paper.
Furthermore, in this embodiment, since the rubber pressing member 4 can be attached instead of the rubber pressing member 140, there is an effect that it can be easily applied to an existing folding machine.
Moreover, this embodiment has various application examples.
Next, application examples of the present embodiment will be described with reference to the drawings.

<Application examples of folding machines>
FIG. 4: has shown schematic expanded sectional drawing of the principal part for demonstrating the rubber pressing member of the application example of the folding machine concerning one Embodiment of this invention.
4, a folding machine of the present application is different from the folding machine of the embodiments described above, instead of the rubber pressing member 4, such that with a rubber pressing member 4a is different with different recess 41a of the cross-sectional shape To do. In addition, the other structure of this application example is as substantially the same as the said embodiment.
Therefore, in FIG. 4, the same components as those in FIG. 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

The rubber pressing member 4a of this application example has a thickness of about 1.5 times that of the rubber pressing member 4 described above.
Moreover, the cross-sectional shape of the recessed part 41a is made into circular arc shape. That is, this arc shape is recessed from the virtual outer peripheral surface of the folding cylinder 1 by a distance Ha when the substantially central portion in the width direction of the rubber pressing member 4a is positioned on the virtual center line of the axis of the pair of folding rollers 103. As a shape. Here, the distance Ha is usually several mm to several tens of mm, and is 8 mm in this application example, for example.
Other configurations are substantially the same as those in the above embodiment.

Next, the operation of the folder configured as described above will be described.
The folding machine of this application example operates in substantially the same manner as the above-described embodiment. That is, although not shown, when entering the final stage of the second fold (when the top side edge and the ground side edge of the newspaper 11 enter the triangular prism-like space), both ends are completely free. And move to the center.

Subsequently, both end portions of the newspaper 11 moved to the center side try to rise vertically. At this time, in this application example, the concave edge 41a formed in the rubber pressing member 4a can smoothly raise the end of the paper that has been ramped up, as in the above embodiment (see FIG. 1). The end can be smoothly guided to the folding roller 103. Furthermore, even when the timing at which the pair of folding rollers 103 sandwich the newspaper 11 fluctuates due to an increase in the printing speed, for example, the ramped paper edge is smoothly raised and the paper edge is smoothly smoothed. Since it can be guided to the folding roller 103, it is possible to effectively avoid the problem that the top edge of the sandwiched newspaper 11 collides with the bottom edge of the next newspaper 11.
Other operations are almost the same as those in the above embodiment.

  Thus, the folding machine of this application example can achieve substantially the same effect as the folding machine of the above-described embodiment. In addition, the probability that the paper edge that is ramping up smoothly rises by the amount that the distance Ha is greater than the distance H, and the reliability of preventing folding can be improved.

[One Embodiment of Rotary Printing Machine]
The present invention is also effective as an invention of a rotary printing press.
The rotary printing press (newspaper rotary offset printing press) of the present embodiment is not shown, but is a printer that prints on a plurality of newspaper running papers 10 and the printed newspaper running paper 10 is cut. The structure includes a folding machine and the like. Further, this rotary printing machine is different from the above-described newspaper offset rotary printing machine 100 (see FIG. 5) in that the folding machine of the above-described embodiment is provided instead of the folding machine 110.
In addition, the other structure of this embodiment is as substantially the same as the web offset press 100 for newspapers.

  If it does in this way, the rotary printing press of this embodiment can realize the effect which the folding machine of the above-mentioned embodiment has. That is, when the second folding of the newspaper 11 is performed, it is effective that the ramped paper end rises smoothly and is guided to the folding roller 103 and the paper end collides with the paper end of the next newspaper 11. By preventing the breakage, the occurrence of folds can be prevented to a more complete level. Thereby, the rotary printing press of this embodiment can aim at reduction of an operator's adjustment burden, a waste paper, etc.

As mentioned above, although the preferable embodiment etc. were shown and demonstrated about the folding machine and rotary printing machine of this invention, the folding machine and rotary printing machine which concern on this invention are limited only to embodiment mentioned above. It goes without saying that various modifications can be made within the scope of the present invention.
For example, the cross-sectional shape of the recesses 41 and 41a of the rubber pressing members 4 and 4a is not limited to the above-described shape, and the rough paper edge is smoothly raised and guided to the folding roller 103, and the paper Any shape that can prevent the end from colliding with the end of the next newspaper 11 is acceptable.

For example, although not shown, the cross-sectional shape may be a rectangular shape, a trapezoidal shape, or a sawtooth shape.
Or although it is not illustrated as said cross-sectional shape, the corrugated shape etc. which protruded in the state which the center part of the recessed part depressed from the virtual outer peripheral surface of the folding cylinder 1 may be sufficient. With such a corrugated shape, the protruding portion at the center can function as a stopper at the position where the paper edge of the newspaper 11 rises, and the rough paper edge can be made smoother (position where the paper edge rises). It is possible to stand up in the vicinity (suppressing rampage).

1 Folding cylinder 2 Needle device
3 cutting rubber
4, 4a Rubber presser member
10 running paper for newspapers .
11 Newspaper
20 grooves
21 needles
22 Needle shaft
23 Needle arm
31 Top holder
32 Ground side holder
33 rubber presser member
41, 41a Recess
42 Slotted hole
100 web offset press for newspaper
101 Folding body
102 saw barrel
103 Folding roller
104 Blade 110 Folding machine 120 Saw blade 121 Drag roller 122 Triangle plate 123 Forming roller 124 Nipping roller 125 Rotary folder 126 Delivery fan 127 Delivery belt 140 Rubber pressing member 311 Hole 331 Opening

Claims (4)

In a folding machine comprising a blade, a cutting rubber, a rubber pressing member for fixing the cutting rubber and a folding cylinder having a needle device, a saw cylinder having a saw blade, and a pair of folding rollers, and cutting and folding newspaper running paper ,
The rubber pressing member is provided in a groove of the folding cylinder in which the needle device is provided, and provided in direct contact with the cutting rubber on the rotational direction side of the cutting rubber,
Wherein the rubber pressing member, a recess recessed from the outer peripheral surface of the front Kiorido, formed over the entire Pella side from the bag side of the new 聞紙,
The folding machine , wherein the concave portion is positioned below the needle device when the needle device is positioned above the pair of folding rollers by rotation of the folding cylinder.   The folding machine according to claim 1, wherein a material of a rubber pressing member for fixing the cutting rubber is a resin material or a composite material made of a resin and a metal.   The folding machine according to claim 1 or 2, wherein an axial cross-sectional shape of the recess is a shape having a mountain shape and / or an arc shape. In a rotary printing press comprising a plurality of printing machines for printing on newspaper running paper, and a folding machine for cutting and folding the printed newspaper running paper,
The rotary printing machine according to any one of claims 1 to 3, wherein the folding machine is the folding machine according to any one of claims 1 to 3.

Images