JP3486394B2 - Folding machine for rotary press - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding machine installed in a rotary press such as a commercial offset rotary press.

[0002]

2. Description of the Related Art Generally, a folding machine is installed in a rotary press such as a commercial rotary press. 9 and 10 are explanatory views showing a structural example of a folding machine installed in such a rotary press.
FIG. 9 shows an example of a folder that ejects the printed web as a signature, and FIG. 10 shows an example of a folder that ejects the printed web as a single sheet. Further, FIG. 11 is an explanatory diagram showing a schematic configuration of a conventional folding machine and a paper discharge device section configured to selectively form either a signature or a single sheet.

Although not particularly shown, the general construction of a general commercial offset rotary press has the main components such as a web supply section, a printing unit section, a drying section, a cooling section,
A folding machine and a paper discharge device section (hereinafter, simply referred to as a paper discharge device) for carrying out a signature formed by the folding machine to the outside are sequentially provided from the upstream side of the printing line. Of these, the folding machine 3 and the paper discharge device 21 that form the signature 7 are configured as shown in FIG. 9, and the printed web 5 is continuously conveyed from the printing device in the previous process and then folded. A triangular plate (not shown) provided at the entrance of the book folding machine 3 is folded in two in the vertical direction to form a vertically folded web, and then a lead-in roller, a nipping roller, etc. disposed below (illustrated). After being nipped by (not shown) and rotationally transferred, it is fed between the gripper cylinder 8 and the folding cylinder 9.

The web 5 that has been carried into the grip cylinder 8
A gripping device 22 for gripping the central portion of the cutting length is provided. In addition, the saw blade 23a along the axial direction to the outer peripheral surface,
Rubber bases (saw blade receivers) 24a, 24b formed of an elastic body such as rubber are provided in the axial direction as receiving members for 23b. Here, the gripping device 22 and the rubber bases (saw blade receivers) 24a, 24b are provided two by two in the vicinity of the outer peripheral portion of the gripping cylinder 8 with a phase difference of 180 °. Also,
When the two rubber bases (saw blade receivers) are not distinguished, reference numeral 24 is used.

On the other hand, the folding cylinder 9 has saw-shaped saw blades 23a, 2
The saw blades 25a and 25b in which 3b is incorporated, the needle device 16 having the needle 18 at the arm tip, and the folding blade 26 are provided. Again, the saw blades 23a, 23b, the saw stand 2
Each of 5a, 25b, the needle device 16, and the folding blade 26 are provided in the vicinity of the outer peripheral portion of the folding cylinder 9 in pairs with a phase difference of 180 °. Further, the saw blade and the saw stand are denoted by reference numerals 23 and 25 when the two to be written are not distinguished.

The gripper cylinder 8 and the folding cylinder 9 usually have the same diameter, and the phase is set so that the saw blade 23 and the rubber stand 24 correspond to each other and the gripper device 22 and the folding blade 26 correspond to each other. In this state, they are opposed to each other in synchronization with each other. The needle 18 of the needle device 16 is attached to the tip of the needle arm assembled to the needle shaft, and interlocks with the rotation of the folding cylinder 9 and moves from the outer peripheral surface of the folding cylinder 9 at a predetermined phase position during rotation. It appears to appear and disappear. That is, the web 5 is cut by the saw blade 23a and the rubber stand (saw blade receiver) 24a, and at the same time, the needle 18 pops out from the surface of the folding cylinder 9 and pierces the tip of the following web 5 to cut the web 5 after cutting. The tip end is held and the cut web 5 is wound around the outer peripheral surface of the folding cylinder 9.

The cut web 5 is wound around the outer peripheral surface of the folding cylinder 9 and is rotatably transferred to the two saw blades 23a and 23b.
When the folding blade 26 of the folding cylinder 9 approaches the position corresponding to the gripping device 22 of the gripping cylinder 8 in the middle of, the needle 18 is gradually withdrawn, and the web 5 is moved to the claw portion of the gripping device 22 opened by the folding blade 26. After being pushed in, it is gripped by the gripping device 22. As a result, the web 5 is folded (horizontally folded) at an intermediate portion in the traveling direction, and the portion gripped by the gripping device 22 serves as a leading portion, which is rotated about 90 degrees around the gripping cylinder 8 and then the web 5 is rolled. Rubber stand 24b and saw stand 2
The cutting is performed by engaging with the saw blade 23b fixed to the blade 5, and the next needle 18 close to the cutting position jumps out to hook the tip of the downstream web 5 that follows, and the tip of the web 5 of the folding cylinder 9. The lead wire is wound around the outer circumference, and is processed in the same manner as described above.

The folding blade 26 is fixedly mounted on a blade shaft incorporated in the folding cylinder 9, and interlocks with the rotation of the folding cylinder 9 so that the folding blade 26 emerges from the folding cylinder 9 at a predetermined phase position during rotation. Has become. As described above, the folding blade 26 pushes the web 5 wound around the folding cylinder 9 into the claw portion of the gripping device 22 at the position corresponding to the gripping device 22 of the gripping cylinder 8 to fold the web 5 in the center. Function.

Next, the gripping device 22 grips the web 5 pushed by the folding blade 26 of the folding cylinder 9, and creates the signature 7 when the rear end is cut, and then the folding device 7 is folded. When the book 7 is sandwiched between the downstream conveyors 10a and 10b, it functions to open the grip and transfer it to the conveyor 10 side. Reference numeral 19 in FIG. 9 is a chopper folding device. The chopper folding device 19 includes a folding blade 32 that moves up and down via a swing arm, a folding roller 20, and the like, and with respect to the sheet 6 or the folding 7 that is conveyed via the conveyers 10a and 10b. The folding blade 32 is swung down at a predetermined timing, folded along the carrying direction, and then inserted into the middle of the lower folding rollers 20a and 20b.

Thus, the folding rollers 20a, 20b
The tension 7 inserted in the middle of is then guided to the impeller 11 located immediately below. The impeller 11 is a device that receives the signatures 7 sent out as described above and transfers the signatures 7 onto the paper discharge conveyor 12 at a predetermined pitch. The impeller 11 is composed of a plurality of blades (blades) and is a combination of a plurality of rows. It is designed to be used. The discharge pitch of the signatures 7 arranged on the paper discharge conveyor 12 is determined by the rotation speed of the impeller 11 and the traveling speed ratio of the paper discharge conveyor 12.

By the way, in recent years, mainly for leaflets, for example, the demand for B4 size pages 2, 4, and 8 is increasing, and a folder capable of discharging the above-mentioned signature 7 and the single-leaf sheet 6 is required. It's starting to happen. As a folder for the purpose of discharging the above sheet, there is a sheet folder 4 of the type shown in FIG.

The folding machine 4 has a saw body 1 as a main unit.
4, stacking cylinder 13, transfer cylinder 27, conveyor 10,
It is composed of an impeller 11 and a paper discharge conveyor 12. The function of the folding machine 4 will be described with reference to FIGS. 10 and 11. The web 5 that has been printed by the printing device section is cut at the center in the width direction, and the two ribbons 1 are formed.
After being formed into 7a and 17b (indicated by reference numeral 17 when they are not distinguished), they are loaded into the folding machine 4 in the form of two webs without folding.

Subsequently, the conveyed ribbon 17 is nipped between the drag roller 29 and the paper pressing roller 30 and is carried between the stacking cylinder 13 and the saw cylinder 14 by the rotation of these rollers, and is transferred to the stacking cylinder 13. The tip is held by the needle 18 of the needle device 16 provided, and at the same time, the cutting is performed between the saw blade 23 of the saw cylinder 14 and the rubber stand 24 of the stacking cylinder 13. Saw body 14
The saw blade 23 is provided at two places on the circumference so that it can be cut twice every one revolution, the stacking cylinder 13 has a diameter 1.5 times that of the saw body 14, and the needle device 16 is provided at three places on the circumference. Has been. Further, the transfer cylinder 27 has a diameter twice that of the saw cylinder 14, and the needle devices 16 are provided at two locations on the circumference.

Therefore, the tips of the ribbons 17a and 17b cut by the saw cylinder 14 are held by the needle device 16 of the stacking cylinder 13 as two sheets. The needle device 16 of the stacking cylinder 13 encounters the needle device 16 of the transfer cylinder 27 every other piece. Therefore, even if the two sheets 6 held by the needle device 16 of the stacking cylinder 13 encounter the delivery cylinder 27,
Only encountering the needle device 16 of the delivery cylinder 27 only once
Therefore, the stacking cylinder 13 rotates while holding the sheet 6, and when the saw cylinder 14 is encountered next, another sheet 6
Hold the tip of.

As a result, the stacking cylinder 13 has four sheets 6
Is held and rotated, and the next time it encounters the transfer cylinder 27, it encounters the needle device 16 of the transfer cylinder 27, so that the four sheets 6 are transferred to the transfer cylinder 27. In this way, the needle device 16 of the stacking cylinder 13 receives the sheet 6 twice and then transfers it to the transfer cylinder 27. Subsequently, the sheet 6 transferred to the transfer cylinder 27 is transferred to the pair of conveyor belts 10a and 10b, and these belts 1
Impeller 11 installed below by being sandwiched between 0a and 10b
Be thrown into. After that, from the impeller 11 to the discharge conveyor 1
It will be transferred to the above 2 and discharged in the shape of a roof tile and carried out to the outside.

As described above, the conventional folding machines for ejecting both the signature 7 and the sheet 6 are dedicated to each other. In other words, two folding machines 3 and 4 having different types of folding machine 3 and sheet folding machine 4 are installed together.
As an example of these arrangements (layouts), as shown in FIG. 11, a sheet discharge type folding machine 4 is installed outside the line of the folding discharge type folding machine 3, and a web is provided via a turn bar 31 or the like. There is a configuration in which both types of folding machines can be selectively used by changing the traveling route of No. 5.

[0017]

By the way, the above-mentioned conventional folding machine for sheets and sheets also has the following problems. That is, as described above, the conventional combined folding machine has two sets of different types of folding machines, that is, the folding machine 3 and the folding machine 3, which are specially manufactured to discharge the paper in both the form 7 and the sheet 6. Since the folding machine 4 is installed side by side and either one side is selectively used, two folding machines are required as the installation location, and the required space becomes very large.

Further, the traveling route of the web 5 becomes complicated, the layout becomes difficult, and the workability of maintenance such as maintenance inspection and repair is deteriorated. In the structure in which two independently manufactured folding machines 3 and 4 are installed side by side, the manufacturing cost naturally rises. The present invention was devised in view of the above-mentioned problems, and enables the discharge of sheets and the discharge of sheets to be performed by a single folding machine, which can be installed in a narrow space and can reduce costs, It is an object of the present invention to provide a folder for a rotary press, which can be easily maintained.

[0019]

Therefore, the folder for a rotary press of the present invention is designed to cut a web running on the rotary press into a predetermined length and fold the web near the center of the predetermined length. A folding cylinder and a gripping cylinder, a saw cylinder for cutting the web to a cutting length of half the predetermined length, a saw blade receiver corresponding to the saw blade of the saw cylinder, and an outer periphery of an odd multiple of the cutting length. With a long stacking body,
It is characterized in that they are arranged side by side and that the adjacent parts of the respective cylinders are engaged with each other (Claim 1).

Regarding each of the cylinders, the gripper cylinder and the folding cylinder engage with each other, the folding cylinder and the stacking cylinder engage with each other, and the stacking cylinder and the saw cylinder engage with each other. Structure (Claim 2), or a structure in which the folding cylinder and the gripper cylinder are engaged with each other, the gripper cylinder and the stacking cylinder are engaged with each other, and the stacking cylinder and the saw cylinder are engaged with each other. (Claim 3) is preferable. Switching for switching between a state of introducing a vertically folded web or an unfolded web between the gripper cylinder and the folding cylinder and a state of introducing an unfolded web between the stacking cylinder and the saw cylinder It is preferable to provide the device (Claim 4).

A folded signature or a folded signature introduced between the gripper cylinder and the folding cylinder, and a folded signature, and no folding between the stacking cylinder and the saw cylinder. It is preferable to introduce the web and discharge the sheet cut into the cut length by a common conveying device (claim 5). Further, it is preferable that the signature is provided with a conveyor for conveying the signature or the sheet and the right-angled folding device is provided for folding the signature or the sheet on the conveyor along the conveying direction (claim 6). .

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. It should be noted that each embodiment will be described assuming that the present invention is applied to a commercial rotary offset press. First, the first embodiment of the present invention will be described.
1 and 2 show a folder for a rotary press as a first embodiment of the present invention. FIG. 1 is a schematic side view for explaining the structure of the folder, and FIG. 2 is a function of the folder. It is a typical side view explaining. 5 and 6 show a configuration example of a switching device for a folder for a rotary press as the first and second embodiments of the present invention. FIG. 5 is an axial sectional view thereof, and FIG. 3 is a cross-sectional view taken along the line AA of FIG. In FIGS. 1 and 2, the same reference numerals are given to parts and parts that function similarly to the conventional folding machine (FIGS. 9 and 10).

The folder according to the present embodiment is a conventional folder folding machine 3 for cutting the printed web 5 to form a signature 7.
And the function of the conventional sheet folding machine 4 for forming the single-leaf sheet 6 from the web 5 as described above. One set of folding machines can form the signature 7 and the sheet 6. It was designed so that it could be performed. That is, as shown in FIG. 1 and FIG. 2, the present folding machine has a gripper cylinder 8, a folding cylinder 9, and conveyors 10 a, 1 as a conveyor device for forming a signature 7.
0b (indicated by reference numeral 10 when the two are not distinguished), the impeller 11 and the paper discharge conveyor 12, and in addition to this, the stacking cylinder 13 and the saw cylinder 1 to form the sheet 6.
4 is configured integrally with each cylinder forming the signature 7, and the folding cylinder 9 on the folder forming folder side and the stacking cylinder 13 on the sheet forming folder portion are omitted. It has a structure that is arranged side by side in the horizontal direction.

In FIG. 2, reference numeral 15 is a conveyor belt for stably guiding the sheet 6. Further, the structures and functions of the stacking cylinder 13 and the saw cylinder 14 of the sheet forming folder are similar to those already described as the prior art (FIG. 10). Further, the folding cylinder 9 and the gripping cylinder 8 of the present apparatus are all provided with a needle device 16 equipped with a needle 18 for piercing and holding the tip of the web 5 and rotationally transferring along the outer peripheral surface of each cylinder. There is.

As for the diameter ratio of each cylinder, assuming that the saw cylinder 14 is 1,
The stacking cylinder 13 is 1.5, and the folding cylinder 9 and the gripping cylinder 8 are 2. The saw cylinder 14 has two sets of saw blades 23 incorporated therein, the stacking cylinder 13 is provided with three sets of needle devices 16 and saw blade receivers 24, and the folding cylinder 9 is provided with the needle device 16 and the saw blade 23. 2 sets of folding blades 26 and 2 sets of folding blades 26 are provided.
6, two sets of saw blade supports 24 and gripping devices 22 are provided.

The needle device 16 of the gripper cylinder 8 and the needle device 16 of the folding cylinder 9 can switch the timing of taking in and out depending on whether the sheet 6 is discharged or the signature 7 is discharged. . That is, when the sheet 6 is discharged, the needle device 16 of the gripper cylinder 8 holds the leading end of the sheet 6 with the needle 18 from the engagement point "A" to "A" shown in FIG.
When ejecting, the needle 18 should not come out near "A". On the other hand, in the case where the staple device 16 of the folding cylinder 9 ejects the sheet 6, when the sheet 6 is ejected, the needle 18 extends from the engagement point “U” to “A” to hold the leading edge of the sheet 6 and eject the signature 7. In this case, the needle 18 is extended from "A" to "D" so as to hold the tip of the web 5.

The mechanism of the switching device for switching the timing of moving the needle 18 in and out of the needle device 16 is constructed, for example, as shown in FIGS. Generally, the needle 18 and the folding blade 26
In many cases, the rotating shaft 37 for moving each of them is driven by a cam, and the switching device illustrated here also employs this method. That is, FIGS.
As shown in FIG. 3, a cam follower 35, which is pressed against the surface of the cam A33 and moves according to the shape of the cam A33, is pivotally supported on one end of a lever 36, and the other end of the lever 36 is fixed to a rotary shaft 37. There is. This allows the cam follower 3
5 is axially fixed to the body side plate that is rotating integrally with the body, and is supported freely in the direction of rotation, and moves according to the surface shape (cam profile) of the cam A33 to repeat the rotating shaft 37. It is designed to rotate.

The needle device 16 and the folding blade 2 are provided with a rotary shaft 37.
It is fixed to or is interlocked with the rotating shaft 3
In accordance with the rotation of 7, the supporting members of the needle device 16 and the folding blade 26 are swung, and the withdrawal of the needle device 16 and the folding blade 26 is controlled. Here, the needle device 1
Cam A33 to switch the timing of taking in and out of 6
In order to change the shape of the cam, a rotatable cam B34 is provided concentrically with the cam A33, and by rotating the cam B34, both the shape of the cam A33 and the shape of the cam B34 are recessed. The shape of the part can be adjusted. Further, since the cam follower 35 is pressed so as to be able to come into contact with both of the two cams 33 and 34, the cam follower 35 can be moved only at a place where there is a recess common to the cams 33 and 34.

The rotating cam B34 is fixedly mounted on a cam receiving bush 39 which is concentric with the cams 33, 34, and a gear is provided on the outer periphery of the cam receiving bush 39. The gear is a motor supported by the frame. Gear 4 fixed to the shaft end of 41
It meshes with 0. By rotating the motor 41, the cam B34 is passed through the gear 40 and the cam receiving bush 39.
Is rotated so that the combined shape with the cam A33 can be changed.

A sensor 42 for detecting the rotational position is provided at the other end of the motor 41 so that the rotational position of the cam B34 can be detected. Further, when there are two positions where the cam B34 should be adjusted, the cam receiving bush 39 may be provided with an uneven portion so that the limit switch can detect these two positions. By the way, in the present embodiment, the diameter ratio of each cylinder is set such that the saw cylinder 14 is 1, the stacking cylinder 13 is 1.5, and the folding cylinder 9 is
Although the gripper cylinder 8 has been described as two, the relation of these basic dimensions is generalized and explained. If the length cut by the saw cylinder 14 is m, the outer peripheral length of the saw cylinder 14 is the cut length m. And the outer peripheral length of the stacking cylinder 13 is an odd multiple of 3 or more of the cutting length m, and the outer peripheral lengths of the folding cylinder 9 and the gripping cylinder 8 are M (the cutting length is twice the cutting length m of the saw cylinder 14). M is an integer multiple of 2 m)
The structure shall be folded horizontally at the length of.

The folding machine 1a of the first embodiment of the present invention is configured as described above, and therefore operates as follows.
First, a web (vertically folded web) 5 folded in two in a front step (not shown) is passed from the portion (W) in the figure, and is inserted between the holding cylinder 8 and the folding cylinder 9. As a result, the web 5 is cut by the saw blade 23 of the folding cylinder 9 and the rubber base 24 of the gripping cylinder 8, and the tip of the web 5 is cut by the needle 1 of the folding cylinder 9.
Hold it at 8 and guide it to the position "C" in FIG. At this time,
The folding blade 26 of the folding cylinder 9 is ejected and the web 5 is pushed into the gripping device 22 of the gripping cylinder 8, so that the web 5 is folded in two at the center to form the signature 7.

After that, the signature 7 is conveyed to the vicinity of the "a" portion while being held by the gripping device 22, and the conveyor 1
0a, 10b and further conveyed, impeller 11
It is dropped into the space between the blades and is rotatably transferred. Then, after the impeller 11 has rotated by a predetermined angle,
It is transferred onto the paper discharge conveyor 12 at a predetermined pitch and is sent out to the outside via the paper discharge conveyor 12. Thereafter, the same operation is sequentially repeated.

In this case, the drive systems of the stacking cylinder 13 and the saw cylinder 14 are cut off by a clutch (not shown). On the other hand, when forming the single sheet 6, the following operation is performed. First, after putting on the clutches of the stacking cylinder 13 and the saw cylinder 14, as described in the section of the prior art, after slitting along the running direction of the web 5 into two ribbons 17a and 17b in the previous step, , These ribbons 17a, 17
FIG. 2 shows an unfolded web with b stacked on top of each other.
Paper is passed from the middle (S) part, fed between the stacking cylinder 13 and the saw cylinder 14, and the needle 18 of the needle device 16 provided on the stacking cylinder 13
While holding the tips of the ribbons 17a and 17b via the ribbon, the ribbons 17a and 17b are held between the saw blade 23 and the rubber stand 24 at the same time.
Is cut in the width direction to form a double-sheet sheet 6.

In addition, 3 provided to the stacking cylinder 13 described above.
With the sheet 6 held by the needles 18 of the set,
The needle device 16 of the folding cylinder 9 when rotated to the "U" point in FIG.
It is as explained in the conventional folding machine that each of the stacking cylinders 13 is encountered once every two revolutions, thereby forming the four-stacked sheet 6. Further, it is transferred from the needle 18 of the stacking cylinder 13 to the needle 18 of the adjacent folding cylinder 9, is rotationally transferred, and then is transferred to the needle 18 of the holding cylinder 8 arranged in parallel on the folding cylinder 9.

At this time, the needle 18 of the folding cylinder 9 holds the sheet 6 from the "C" point to the "A" point in FIG. 2, and the needle 18 of the gripper cylinder 8 from the "A" point to the "A" point. A switching device (not shown) is operated so as to hold it. After that, the sheet 6 is delivered to the transfer conveyor 10 and transferred via the transfer conveyors 10a and 10b, and thereafter, between the blades of the impeller 11 as in the case of the signature. It is sent in and rotated. Then, after the impeller 11 is rotated by a predetermined angle, the discharge conveyor 1 is rotated at a set pitch.
The sheet is transferred onto the sheet 2 and sent to the outside via the sheet discharge conveyor 12.

According to this embodiment, the signature 7
Alternatively, since the sheet 6 can be processed and discharged, the following effects and advantages can be obtained. (1) Folding machines 3 and 4, which were conventionally installed in two, are one folding machine 1
Since a can also be used as a and structural parts of the sheet conveying means can be omitted, it is possible to arrange a folding machine capable of processing the signature 7 and the sheet 6 in a narrow space. It becomes possible and the space efficiency of the equipment is improved.

(2) It is possible to greatly reduce the manufacturing cost (cost) by simplifying the equipment such that the signature 7 and the sheet 6 can be discharged by the single conveying device 10. . (3) Since the structure is simple, maintenance such as maintenance and inspections and repairs are easy. (4) The sheets 6 can be easily stacked.

Next, a second embodiment of the present invention will be described. FIGS. 3 and 4 show a folder for a rotary press as a second embodiment of the present invention, and FIG. 3 shows the structure of the folder. And FIG. 4 is a schematic side view for explaining the function of the folding machine. In FIGS. 3 and 4, the same reference numerals are used for parts and portions that function in the same manner as the conventional folding machine (FIGS. 9 and 10) and the folding machine of the first embodiment (FIGS. 1 and 2). Attach.

The folding machine 2a according to the present embodiment is similar to the first embodiment in that the conventional folding machine 3 for forming the signature 7 from the web 5 and the conventional folding machine for forming the single sheet 6 from the web 5 are used. The machine 4 and the machine 4 are integrally combined to form one set of folding machines, but another form example in which the arrangement of the cylinder is changed is proposed with respect to the first embodiment. That is, as shown in FIGS. 3 and 4, the folding machine 2 a of the present embodiment also has the gripper cylinder 8, the folding cylinder 9, and the conveyors 10 a and 10 a to form the signature 7.
b (indicated by reference numeral 10 when the two are not distinguished), an impeller 11 and a paper discharge conveyor 12, and in addition to this, a stacking cylinder 13 and a saw cylinder 14 for forming a sheet 6.
Is configured to be integrated with each cylinder forming the signature 7, and in this device, the grip cylinder 8 on the folder forming folder side is formed.
And the stacking cylinder 13 on the sheet forming folder side are arranged side by side in a substantially horizontal direction. Also, in FIG.
Is a conveyor belt for stably guiding the sheet 6.

Also in this embodiment, the tip of the web (sheet) 5 is pierced and held by all of the stacking cylinder 13, the folding cylinder 9, and the gripping cylinder 8 so that the web 5 can be rotatably transferred along the outer peripheral surface of each cylinder. A needle device 16 with a needle 18 is provided. The needle device 16 of the gripper cylinder 8 is used only for discharging the sheet 6. The diameter ratio of each barrel is the same as that of the first embodiment, and the components (needle device,
The number of built-in folding blades, saw blades, etc.) is also the same as in the first embodiment. Also, the arrangement of each component is adapted to the arrangement of the body.

Next, description will be given of a portion for switching between the case of discharging the sheet 6 and the case of discharging the signature 7. First, when the sheet 6 is discharged, the needle device 16 of the gripper cylinder 8 holds the sheet 6 from the engagement point "ki" with the stacking cylinder 13 to the "power" transferred to the conveyor 10. With the needle extended, the drive clutch of the folding cylinder 9 (not shown) is disengaged to shut off the driving of the folding cylinder 9.

On the other hand, when ejecting the signature 7, the folding cylinder 9
, The needle device 16 of the gripper cylinder 8 is transferred from the engagement point "O" with the folding cylinder 9 to the conveyor 10.
The signature 7 conveyed by the conveyer conveyor 10 is prevented from going out of the cylinder surface up to the point "K" where it is separated from the grip cylinder 8.
The drive system of the stacking cylinder 13 and the saw cylinder 14 may be disengaged with a clutch or the like. For the needle device 16 of the gripper cylinder 8 to be taken in and out, for example, a switching device (FIGS. 5 and 6) similar to that of the first embodiment is applied.

The relationship of the basic constituent dimensions of each cylinder is generally the same as that of the first embodiment. If the length cut by the saw cylinder 14 is m, the outer peripheral length of the saw cylinder 14 is The cutting length m is an integral multiple, the outer peripheral length of the stacking cylinder 13 is an odd multiple of 3 or more of the cutting length m, and the outer peripheral length of the folding cylinder 9 and the gripper cylinder 8 is twice the cutting length m of the saw cylinder 14. M is an integer multiple of M (M = 2m)
The structure shall be folded horizontally at the length of.

The folding machine 2a according to the second embodiment of the present invention is configured as described above, and therefore operates as follows.
When forming the signature 7, the following operation is performed. First,
The web 5 folded in two in the previous step is passed from the (W) part in the drawing, and is inserted between the gripping cylinder 8 and the folding cylinder 9. As a result, the web 5 is cut by the gripper cylinder 8 and the folding cylinder 9,
When the tip of the web 5 is wrapped around the outer peripheral surface of the folding cylinder 9 by the needles 18 of the folding cylinder 9, and the folding cylinder rotates 90 degrees, the folding blade 26 of the folding cylinder 9 is pushed out to the holding device 22 of the holding cylinder 8. Fold in the web 5.

As a result, the web 5 is cut and folded in two at the center in the circumferential direction, the needle 18 of the folding cylinder 9 comes off, and the outer peripheral surface on the side of the gripper cylinder 8 with the part gripped by the gripper device 22 of the gripper cylinder 8 as the tip. Wrapped around. Furthermore, the folding cylinder 9 is 90
When rotated once, the web 5 wound around the outer peripheral surface of the gripper cylinder 8 is cut by the next saw blade 23 to form the signature 7.

After that, the signature 7 sent between the transfer conveyors 10a and 10b is sent between the blades of the impeller 11 and rotationally transferred. Then, after the impeller 11 has rotated by a predetermined angle, it is transferred at a predetermined transfer position on the paper discharge conveyor 12, and the paper discharge conveyor 1
It is sent out to the outside via 2. Thereafter, the same operation is sequentially repeated.

On the other hand, in the case of forming the single-leaf sheet 6, the following operation is performed. As described in the section of the prior art, in the previous step, slitting is performed at the width center of the web 5 to form two ribbons 17a and 17b, and these ribbons 17a and 17b are overlapped with each other in the drawing. Paper is passed from the (S) section, fed between the stacking cylinder 13 and the saw cylinder 14, the needle 18 of the needle device 16 provided in the stacking cylinder 13 is pierced at the tip, and is rotationally transferred. Blade 23
And the rubber stand 24 of the stacking cylinder 13 is cut in the width direction.
In this way, the ribbons 17a and 17b are cut one after another, and the needle 18 of the stacking cylinder 13 holds the leading end of the sheet 6.

Then, the sheet 6 is formed by the needle 18 of the stacking cylinder 13.
As described above, the stacking cylinder 13 is further rotated once, and then the leading end of the next ribbon 17 is held again, and the sheet 6 of four stacked sheets is conveyed to the next step. Then, the four stacked sheets 6 are delivered from the needles 18 of the stacking cylinder 13 to the needles 18 of the adjacent gripping cylinders 8 (the cam for the needle device 16 is switched to the sheet feeding state by the switching device).

Thereafter, the sheet 6 is transferred to the conveyer conveyor 10 through the same steps as those of the folding folder in the first embodiment, and is conveyed via the conveyer conveyors 10a and 10b, and then the impeller 11 is moved. It falls between the blades and is rotationally transferred. Then, after the impeller 11 is rotated by a predetermined angle, the impeller 11 is transferred onto the paper discharge conveyor 12 at a predetermined pitch and is sent to the outside via the paper discharge conveyor 12.

According to the present embodiment, in this manner, the signature 7 or the sheet 6 can be processed and discharged, and therefore, as in the first embodiment, sheet feeding and gripping and folding can be performed. One folding machine can be used as a single folding machine, which has conventionally been provided with two machines, and some mechanical elements such as the sheet conveying means can be omitted due to its structure. The effect of can be obtained. In addition to this, since it is possible to reduce the number of steps of the needle device 16 which is a conveying means of the sheet 6 to two places, the scratches (needle holes) on the printed matter are reduced, and the product value can be increased. Can also be obtained.

Next, a third embodiment of the present invention will be described. This embodiment is of a type in which a chopper folding device is further arranged downstream of the folding unit, and FIG. 7 shows the present invention. FIG. 8 is a schematic side view showing a rotary press folding machine as a third embodiment, and FIG. 8 is a schematic side view showing a rotary press folding machine as a modified example of the third embodiment of the present invention. Figure 7,
In FIG. 8, parts and portions that function similarly to those of the conventional folding machine (FIGS. 9 and 10) are designated by the same reference numerals.

The folding machine 1b for rotary press of this embodiment is shown in FIG.
As shown in FIG. 3, a chopper folding device (right-angle folding device) 19 is provided side by side with the rotary machine folding machine (FIG. 1 type folding machine) 1a according to the first embodiment. Further, as shown in FIG. 8, a rotary press folding machine 2b according to a modified example of this embodiment has a chopper folding device in addition to the rotary press folding machine (FIG. 3 type folding machine) 2a according to the second embodiment. It is the one with 19 added.

The chopper folding device 19 itself is the same as that of the conventional example (FIG. 9), and is composed of a folding blade 32 that moves up and down via a swing arm, a folding roller 20, and the like.
After the folding blade 32 is swung down at a predetermined timing with respect to the sheet 6 or the folding 7 conveyed through the conveyors 10a and 10b, and after folding along the conveying direction,
It functions to be inserted in the middle of the lower folding rollers 20a and 20b.

That is, the folder 1b according to this embodiment,
In the folding machines 1a and 2a of the previous process, 2b cuts the web 5 at right angles to the traveling direction to form the sheet 6 or the signature 7, and then further transports the sheet 6 or the signature 7 to the downstream.
Is folded in half along a line along the traveling direction and transferred to an impeller 11 as a signature 7, and is discharged like a roof tile onto a discharge conveyor 12 in the next step.

Since the third embodiment of the present invention is configured as described above, it operates as follows. The sheet 6 formed in the folding machine 1a according to the first embodiment or the folding machine 2a according to the second embodiment, or the signature 7 formed in a predetermined shape is transferred via the transport conveyor 10. On the way, it is further folded along the sheet advancing direction in the chopper folding device 19, is fed between the blades of the impeller 11 arranged below via the folding roller 20, and is rotationally transferred.

Subsequently, after the impeller 11 has rotated by a predetermined angle, it is transferred onto the paper discharge conveyor 12 at a predetermined position and is carried out to the outside in the state of being stacked in a roof tile shape. The same operation will be sequentially repeated thereafter. As a result, in this embodiment, in addition to the sheet forms of the first and second embodiments, it is possible to form the signatures 7 and the sheets 6 of various variations (shapes). Therefore, it is possible to obtain various effects such as significantly improving the property and responding to various needs of customers.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments and various modifications can be made without departing from the spirit of the present invention.

[0058]

As described above in detail, according to the folding machine for a rotary press of the present invention, the web running on the rotary press is cut into a predetermined length, and the web is folded around the center of the predetermined length. A folding cylinder and a gripping cylinder, a saw cylinder for cutting the web to a cutting length of half the predetermined length, a saw blade receiver corresponding to the saw blade of the saw cylinder, and an odd multiple of the cutting length. With a stacking cylinder with an outer peripheral length of
Adjacent ones of the respective cylinders arranged side by side are engaged with each other, so that, for example, the gripper cylinder and the folding cylinder engage with each other, the folding cylinder and the stacking cylinder engage with each other, The stacking cylinder and the saw cylinder are configured to engage with each other (claim 2), or the folding cylinder and the gripper cylinder are engaged with each other, and the gripper cylinder and the stacking cylinder are engaged with each other, By configuring the stacking cylinder and the saw cylinder to engage with each other (claim 3), the web can be processed as a signature or a sheet and discharged by one folding machine. . Therefore, it is possible to install equipment that can process signatures and sheets in a small space,
Space efficiency of equipment is improved. In addition, the equipment can be simplified and the manufacturing cost (cost) can be significantly reduced.
Further, the structure can be simplified, and maintenance such as maintenance inspection and repair is facilitated (claims 1 to 3).

Further, a state in which a vertically folded web or an unfolded web is introduced between the gripper cylinder and the folding cylinder, and an unfolded web is introduced between the stacking cylinder and the saw cylinder. By providing the switching device for switching between the states, it becomes possible to easily and promptly switch between the processing state of the signature and the processing state of the sheet (claim 4). Introducing a vertically folded web or an unfolded web between the gripper cylinder and the folding cylinder, and introducing a folded signature horizontally and an unfolded web between the stacking cylinder and the saw cylinder Then, the sheet cut into the cut length is configured to be discharged by a common conveying device, so that the signature can be discharged and the sheet can be discharged by one conveying means. Further simplification, it is possible to significantly reduce the manufacturing cost (cost) (Claim 5).

Further, by providing a transport conveyor for transporting the signature or the sheet and a right-angled folding device for folding the signature or the sheet on the transport conveyor in the transport direction, various variations (shapes) can be obtained. It is possible to form a signature or a sheet, and the versatility can be greatly improved (claim 6).

[Brief description of drawings]

FIG. 1 is a schematic side view illustrating the structure of a rotary press folding machine according to a first embodiment of the present invention.

FIG. 2 is a schematic side view illustrating the function of the rotary press folding machine according to the first embodiment of the present invention.

FIG. 3 is a schematic side view explaining the structure of a rotary press folding machine according to a second embodiment of the present invention.

FIG. 4 is a schematic side view illustrating the function of a rotary press folding machine according to a second embodiment of the present invention.

FIG. 5 is an axial sectional view showing a switching device for a folder for a rotary press according to the first and second embodiments of the present invention.

FIG. 6 is a sectional view showing a switching device for a folder for a rotary press according to the first and second embodiments of the present invention (a sectional view taken along the line AA of FIG. 5).
Is.

FIG. 7 is a schematic side view showing a folder for a rotary press as a third embodiment of the present invention.

FIG. 8 is a schematic side view showing a folder for a rotary press as a modified example of the third embodiment of the present invention.

FIG. 9 is a schematic side view showing an example of a conventional folder folding machine (folding machine of a type that discharges a printed web as a signature).

FIG. 10 is a schematic side view showing an example of a conventional sheet folding machine (folding machine of a type in which a printed web is discharged as a single-leaf sheet).

FIG. 11 is a schematic side view showing a schematic configuration of a conventional folding machine and a sheet discharging device unit configured to selectively form either a signature and a single sheet.

[Explanation of symbols]

1a, 1b, 2a, 2b folding machine Folding machine for 3 signatures Folding machine for 4 sheets 5 Web 6 sheets 7 signatures 8 gripper 9 folding cylinder 10, 10a, 10b Conveyor conveyor as a conveying device 11 impeller 12 Paper discharge conveyor 13 Stacked body 14 saw body 15 Conveyor belt 16 needle device 17,17a, 17b Ribbon 18 needles 19 Chopper folding device (right angle folding device) 20, 20a, 20b Folding roller 21 Paper ejection device 22 gripper 23, 23a, 23b Saw blade 24, 24a, 24b Rubber stand (saw blade receiver) 25,25a, 25b Saw stand 26 folding blades 27 Hand over cylinder 29 Drag roller 30 Paper pressing roller 31 turn bar 32 folding blade 33 Cam A 34 Cam B 35 Cam Follower 36 lever 37 rotation axis 38 bearings 39 Cam receiving bush 40 gears 41 motor 42 Position sensor

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65H 45/28

Claims (6)

(57) [Claims] 1. A folding cylinder and a gripping cylinder for cutting a web running on a rotary press into a predetermined length, and folding the web near the center of the predetermined length, and a web of a half of the predetermined length. A saw cylinder for cutting to a cutting length, a saw blade receiver corresponding to a saw blade of the saw cylinder, and a stacking cylinder having an outer peripheral length that is an odd multiple of the cutting length are juxtaposed, and A folder for a rotary press, characterized in that adjacent parts are engaged with each other. 2. The holding cylinder and the folding cylinder are engaged with each other, the folding cylinder and the stacking cylinder are engaged with each other, and the stacking cylinder and the saw cylinder are engaged with each other. A folding machine for a rotary press according to claim 1. 3. The folding cylinder and the gripper cylinder are engaged with each other, the gripper cylinder and the stacking cylinder are engaged with each other, and the stacking cylinder and the saw cylinder are engaged with each other. A folding machine for a rotary press according to claim 1. 4. A state in which a vertically folded web or an unfolded web is introduced between the gripper cylinder and the folding cylinder, and an unfolded web is introduced between the stacking cylinder and the saw cylinder. Characterized by having a switching device for switching between states
A folder for a rotary press according to any one of claims 1 to 3. 5. A signature folded laterally by introducing a vertically folded web or an unfolded web between the holding cylinder and the folding cylinder, and folding between the stacking cylinder and the saw cylinder. The folding machine for a rotary press according to any one of claims 1 to 4, wherein a sheet having a cut length and a sheet cut into the cut length are discharged by a common conveying device. 6. A folding conveyor for transporting the signature or the sheet, and a right-angle folding device for folding the signature or the sheet on the transportation conveyor in the transport direction. A folder for a rotary press according to any one of claims 1 to 5.