JPH0439233Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a folding device for a rotary press that uses web paper. In detail, it relates to a folding drum that can select between stacked folding operation (collect run) and normal folding operation (straight run) in a grip folding device that has three cylinders as a basic configuration: a saw cylinder, a folding cylinder, and a jaw cylinder. . (Prior Art) A grip folding device having a mouth cylinder in a rotary press using web paper, a method of collecting folding operation (collect run) and normal folding operation (straight run) using this device, and a set of Regarding the method of folding multiple signatures in parallel by introducing two paper sheets into the basic three cylinders (saw cylinder, folding cylinder, and gripping cylinder), "Printing Machine" (Printing Society Publishing Department, February 7, 1983) Publication, P.53
(P. 56 to P. 56), "Off-wheel printing technology" (GATF Far East Office, first edition published on September 15, 1980, P. 60 to P. 68), "Offset printing machine" (Nippon Printing Shimbun, first edition on June 25, 1982) Publication, P.196 to P.200) and "Introduction to Printing Machinery"
(Published by Printing Society Publishing Department, 1st edition, July 1, 1988, P.64
It is known for such things as P.67). A conventional folding mechanism is known, for example, as shown in FIG. 4, which shows a schematic front view. That is, needle drive shafts 402, 402 are rotatably provided in the folding drum 401 and have the needles 411 fixed thereto, and an arm 403 has one end fixed to the end of the needle drive shafts 402, 402 protruding outside the folding drum 401. ,403
and needle drive shafts 402, 4 of arms 403, 403.
Shafts 404, 40 provided at the other end of the fixed end with 02
4. Cam followers 405, 405 rotatably fitted to shafts 404, 404, and machine stands 450, 45
0 through brackets 406, 406, and needle cams 407, 407.
and the axis 4 of the folding drum 401 in the middle of the folding drum 401.
Gate cams 408, 408 are provided so as to be rotatable with respect to 00 and can be fixed in a constant state with respect to the needle cams 407, 407 as necessary, and each gate cam 408, 408 is rotated once by the folding drum 401. Drive means 409, 409 for 1.5 rotations
and clutches 410, 410 provided within the drive means 409, 409. When performing normal folding operation (straight run) in this conventional example, the fifth
It operates as shown in Figures a through 5c. That is, the needle drive shafts 402a, 402 of the needle cam 407
b, 402c with needles 411a, 411b, 411c
The gate cam 408 is fixed by aligning the segment portion, which is angularly displaced so that the gate cam 408 is sunk into the folding drum 401, with the gate cam 408 and the cutout portion. Then, the clutch 410 is separated, and the saw cylinder 01 and the folding cylinder 40 are separated.
1. Rotate the mouth cylinder 02 in the directions of the arrows. Then, the saw blade 011a of the saw cylinder 01 and the folding cylinder 4
The paper 03 introduced between the saw cylinder 01 and the folding cylinder 401 is cut by the engagement with the saw blade receiving material 413a of the saw blade 01. The part of the paper 03 downstream from the cutting part that is held by the needle 411c is the section 03.
Configure c. Similarly, section 03b is configured downstream of section 03c. The vicinity of the tip of the paper 03 upstream from the cut portion and sections 03c and 03b is held by the needle 411a in FIG. 5a.
reference). The three drums continue to rotate, and the folding drum 4
The folding blade 412b of 01 is the gripping portion 0 of the gripper cylinder 02.
21b, that is, until the needle 411
Part 02 holds section 03b held by b.
1b, the cam follower 405b follows the outer periphery of the needle cam 407, causing the needle 411b to sink into the folding cylinder 401, and the section 03b to be released from the needle 411b. Further, the gripping portion 021c of the jaw barrel 02 performs an operation of opening its grip and releasing the section 03x that it had been gripping (see FIG. 5b). When the three cylinders further continue to rotate, the cam follower 405b
moves along the outer periphery of the needle cam 407, so the needle 411b again protrudes outside the folding cylinder 401 and prepares to hold the next paper 03 (see FIG. 5c). When the folding drum 401 rotates by 120° from the position shown in FIG. 5a, the saw blades 011a, 011b, 011
c, needle drive shafts 402a, 402b, 402c, cam followers 405a, 405b, 405c, needles 411a, 411b, 411c, folding blade 41
2a, 412b, 412c, saw blade receiving material 413a,
413b, 413c and mouth parts 021a, 02
1b, 021c, and 021d are shifted by one installation unit in the rotational direction of each cylinder, and the positional relationship of the saw cylinder 01, folding cylinder 401, and jaw cylinder 02 is the same as that of the fifth cylinder.
The result will be similar to that shown in Figure a. That is, since there are three installation units on one circumferential surface of the folding drum, the installation units are sequentially shifted and folding is normally continued by repeating this process. Next, when carrying out the stack-folding operation (collect run) using the conventional configuration, the steps shown in Fig. 6 a to l
It operates sequentially as shown in . That is, the folding cylinder 40
1 each folding blade 412a, 412b, 412
c is the gripping portion 021a, 0 of the gripping barrel 02.
21b, 021c, and 021d, for example, when the folding blade 412b is in a state facing the gripping part 021b as shown in FIG. Align the notches. At the same time, the clutch 410 is engaged and the gate cam 408 is released from its fixation so that it can freely rotate with respect to the axis 400 of the folding drum 401. Next, as in the normal folding operation, the paper 03 is inserted between the saw cylinder 01 and the folding cylinder 401.
is introduced, and the saw cylinder 01, folding cylinder 401, and jaw cylinder 02 are rotated in the direction of the arrow. By the way, gate cam 408
The cam followers 405a, 405b, and 405c are installed in the folding drum 401 at three equal positions of 120°. There is.
Therefore, as shown in FIG. 6b, for example, the gate cam 408 is
In order for the cam follower 405c to encounter the notch in the same way, when the gate cam 408 rotates an integral number of times, the folding drum 401 must also rotate an integral number of times, and the folding drum 401 needs to rotate at least twice. That is, each needle 411a of the folding cylinder 401,
411b and 411c each sink into the folding drum 401 only once every two rotations (720° rotation), and the sections held in the overlapping state are released at once by the two rotations and transferred to the mouth cylinder 02 side. . Also, the alignment of the needle sinking segment portion of the needle cam 407 and the notch portion of the gate cam 408 is such that the folding drum 401 is 240°.
Once every rotation. That is, Fig. 6b,
As shown in h, each time the needles 411a, 411
For example, at the time of FIG. 6b, the needle 411b is depressed at every other location, but as the rotation continues, the needle 411a, 411c is depressed.
411c, 411b, 411a, 411c, 41
1b..., and the sections held in the overlapping state are transferred to the mouth cylinder 02 side. Figures 6a to 6l show the saw cylinder 0 rotating in the direction of the arrow.
1. The folding cylinder 401, the gripping cylinder 02, and each section caused by rotation are shown in order.
Figures e, h, and k show the folding drum rotated by 120°, 240°, and 360°, respectively, from Figure 6b, and the repeated folding was continued. In the configuration of this conventional example, the cam followers 405a, 405b, 405c are always urged toward the center of the hand cam 407 by elastic bodies (not shown), and the gripping portions 021a, 021
b, 021c, and 021d have been developed using a dedicated cam (not shown) to match the sinking of the needles 411a, 411b, and 411c, but it is possible to remove unnecessary gripping parts, such as the gripping plates of 021a and 021c. was. (Problem to be solved by the invention) However, in the conventional mechanism described above, the switching operation between the normal folding operation (straight run) and the double folding operation (collect run) is performed in two steps, and the configuration thereof is also complicated. We had this issue.
That is, when switching from stacked folding operation (collect run) to normal folding operation (straight run), the needle sinking segment of the needle cam and the notch of the gate cam are aligned to fix the gate cam, and the gate cam driving means is The clutch must be separated, and if an attempt is made to operate without separating the clutch, there is a problem in that serious damage may occur to the mechanism. On the other hand, when switching from normal folding operation (straight run) to stacked folding operation (collect run), the positional relationship is such that one of the jaws of the jaw cylinder and one of the folding blades of the folding cylinder face each other correctly. In order to do so, the folding cylinder and the jaw cylinder must be set, the gate cam must be unfixed, and the clutch of the gate cam driving means must be connected. If the gate cam is connected, the intended folding will not be completed, and if the clutch is only connected, and if you try to operate the gate cam without releasing it, it may cause serious damage to the mechanism. This has led to problems. In this way, in the conventional example, in any switching, the clutches of the gate cam and the gate cam driving means must be fixed, unfixed, separated, and connected after correctly aligning the respective positions, which is complicated. In addition, the cam has a double structure of a needle cam and a gate cam, and the structure is complicated, such as requiring a clutch in the gate cam driving means, so failure frequency is not low, and maintenance and adjustment work is required. There were also complex issues. (Means for solving the problem) This invention is attached to the folding drum near the circumferential surface of the folding drum that rotates around a rotation axis, and prevents sinking inward of the folding drum and protrusion toward the outside of the folding drum. A selectable paper holder, a cam with a guide groove that rotates as the folding drum rotates and at a different rotation speed from the folding drum, and a cam that allows the paper holder to sink inward and fold into the folding cylinder while being guided by the cam. The cam has a cam follower that transmits the reciprocating motion of the outward protrusion, and the cam is formed with a plurality of paper holding part sinking guide parts, and at least one of the stock paper holding part settling guide parts is replaced with the cam follower. To provide a folding drum characterized in that a paper holding part non-sinking guide part and a paper holding part sinking guide part can be selected by attaching a paper holding part non-sinking guide member. (Function) Since the folding drum and the cam rotate at different rotational speeds, their relative positions change as they rotate. In other words, paper paper holding part sinking guide parts are provided at a plurality of positions of the cam which guides the paper holding part via the cam follower and causes the paper paper holding part to sink toward the inside of the folding cylinder during driving, thereby performing normal folding operation. ing. Therefore, if the machine is driven in this state, it will be a normal folding operation (straight run). On the other hand, if the paper holding part non-sinking guide part is attached to at least one of the paper holding part sinking guide parts, the interval until the paper holding part which has once sunk sinks again becomes wider. In other words, once a specific paper holding part of the folding drum and the paper holding part of the cam and the sinking guide part of the cam meet, the number of cut sheets corresponding to the number of rotations required for the folding drum is placed on the circumferential surface of the folding drum until they meet again. Stack them and hand them over to the mouth. In the above configuration, since the cam follower is regulated by the guide groove of the cam, there is no possibility of timing errors in the operation of the paper holding section. During normal folding operation (straight run), the cam is used with a plurality of paper holding parts and settling guide parts. For example, the needle sinking segment members are fixed to the cam base member at equal 180° positions to form the paper holding portion sinking guide portion. Then, for example, the cam is rotated 1.5 times in the same direction as the folding drum, with the axis of the folding drum as the center of rotation, while the folding drum makes one rotation. That is, for example, by rotating the cam 180 degrees every time the folding cylinder rotates 120°, the paper holding parts, such as needles, provided at equal 120° positions of the folding cylinder are sunk into the folding cylinder, and the paper holding parts are Release the section you were holding and hand it over to the mouth. On the other hand, during the stack-folding operation (collect run), at least one of the paper holding section sinking guide sections of the cam is used as a paper holding section non-sinking guide section. For example, one of the needle sinking segment members fixed at equal 180° positions on the cam base member is replaced with a needle non-sinking segment member and fixed, so that only one location on the cam becomes the paper holding part and settling guide part. . Then, as in the normal folding operation (straight run), the cam is rotated 1.5 times while the folding drum rotates once, for example, in the same direction as the folding drum, with the folding drum axis as the rotation axis. In this case, the cam is rotated 360° every time the folding cylinder is rotated 240°, and the paper holding parts provided at equal 120° positions on the folding cylinder are blown away every other place to angularly displace the paper. The holding section is lowered inward to the folding cylinder, and the section held by the paper holding section is released and delivered to the gripping cylinder. In addition, in order for one cam follower that follows the cam to sink and protrude through the paper holding portion of the cam to encounter the paper holding portion sinking guide portion of the cam, for example, the needle sinking segment member, it is necessary to Both the number of rotations and the number of rotations of the folding cylinder must be an integral number of times, for example, the folding cylinder must rotate at least twice, and the paper holding part is angularly displaced at every other position, so that the paper holding part is inside the cylinder. During settling, the paper holding section holds the sections in a double overlapping state, for example, so that the signature to be folded out is folded over and over again. (Example) An example of implementing the present invention will be described with reference to FIGS. 1a to 3l. A folding cylinder 1 having a circumferential length three times the cut-off length of the paper is rotatably supported on machine stands 50, 50 through bearings on both sides of the folding cylinder. A gear 1 for rotationally driving the folding drum 1 is mounted on one of the shafts on both sides.
Fix 5. Moreover, between the folding drum 1 and the machine bases 50, 50, cams 8, 8 are connected to a cam drive gear 8, respectively.
5 and 85 are rotatably provided on both side shaft portions of the folding drum 1 via bearings. In addition, needle drive shafts 2 and 2, which are divided into two on the center side of the folding drum 1, are located at equal 120° positions near the inner circumferential surface of the folding drum 1.
are respectively protruded from the sides of the folding cylinder 1 and rotatably provided. That is, three installation units are provided at equal intervals near the circumferential surface. A plurality of needles 11 are fixed to the needle drive shafts 2, 2, but the needles may have a convex structure other than the needles as long as the structure is capable of holding paper. An arm 3, 3 is fixed to the protruding end of each of the needle drive shafts 2, 2, and a shaft 4, 4 is provided to the other end of the fixed end of each arm 3, 3 to the needle drive shaft 2, 2. , each axis 4,4
cam followers 5, 5 are rotatably provided. Each of the cam followers 5,5 is slidably inserted into the guide grooves 84,84 of the cams 8,8. On the other hand,
Gears 91, 91 are fixed to both shaft portions of the folding drum 1 through a gear 15 on one shaft and directly on the other shaft. Further, gears 91, 91 and intermediate gears 92, 92 meshing with these gears 91, 91, respectively.
, gear shafts 94, 94 to which the intermediate gears 92, 92 are fixed, respectively, and the machine base 5 of each gear shaft 94, 94.
A cam drive means 9 is provided which is fixed to the other end side passing through the cam drive gears 85 and 50 and includes intermediate gears 93 and 93 that mesh with the cam drive gears 85 and 85. The cam driving means 9 drives each cam 8, 8 to rotate 1.5 times in the same direction as the folding drum while the folding drum 1 rotates once. The cam 8 has a shape as shown in detail in FIGS. 1f and 1g. That is, a needle sinking segment member 82 or a needle non-sinking segment member 83 is fixed to a metal base member 81. Figure 1 f during stack-folding operation (collect run)
As shown in FIG. 2, a needle sinking segment member 82 and a needle non-sinking segment member 83 are arranged at equal 180° angle positions and are used as a cam 823 fixed to the base member 81. That is, it is used as a cam 823 having one needle sinking guide portion. During normal folding operation (straight run), the first
The needle sinking segment member 83 shown in FIG. The cam 822 is used as a cam 822 having two needle sinking guide parts, as shown in FIG. When assembling the folding cylinder mechanism, for example, as shown in FIG.
1b, the folding blade 12
The cam follower 5b, which angularly displaces the drive shaft 2b to which the needle 11b engages, is moved by the cam 822 or 8 so that the needle 11b cooperating with
Adjust and assemble the needle sinking segment member 82 so that it is located at the center of the needle sinking segment member 82 at 23. Next, the operation of this embodiment will be explained. As mentioned above, when performing normal folding operation (straight run) with the folding drum mechanism according to the embodiment of this invention, the cam 8 is used in the form of the cam 822 , that is, the needle sinking guide part is used in the form of two places. , Figure 2 a to c
The operation is as shown in . That is, when the saw cylinder 01, the folding cylinder 1, and the jaw cylinder 02 are rotated in the directions of the arrows,
Saw blade 011a of saw barrel 01 and saw blade receiving material 13 of folding barrel 1
Due to the engagement with a, the paper 03 introduced between the saw cylinder 01 and the folding cylinder 1 is cut. The part of the paper 03 downstream from the cutting part that is held by the needle 11c constitutes a section 03c, and similarly the part held by the needle 11b
The part held by the needle constitutes the section 03b, and the area near the tip of the paper 03 upstream from the cutting part is the needle 1.
1a (see Figure 2a). The three drums continue to rotate, and the folding blade 12b of the folding drum 1
reaches a position facing the gripping portion 021b of the jaw barrel 02, and causes the gripping portion 021b to hold the section 03b, which had been held by the needle 11b, in its grip. At this point, the needle 11b is lowered into the folding cylinder 1 by the cam follower 5b following the guide groove 84 of the cam 822 , and the section 03b is released from the needle 11b. In addition, the grip part 021c of the grip barrel 02 opens its grip, and the section 03x that had been gripped until then opens.
(See Figure 2b). Further, as the third cylinder continues to rotate, the cam follower 5b follows the guide groove 84 of the cam 822, and the needle 11b again projects to the outside of the folding cylinder 1, in preparation for holding the next paper 03 (see FIG. 2c). When the folding drum 1 rotates by 120° from the position shown in FIG. 2a, the cam 822 rotates by 180°.
Rotates, and saw blades 011a, 011b, 011
c, needle drive shafts 2a, 2b, 2c, cam followers 5a, 5b, 5c, needles 11a, 11b, 11c,
Folding blades 12a, 12b, 12c, saw blade receiving material 1
3a, 13b, 13c and mouth parts 021a, 0
21b, 021c, and 021d are shifted by one installation unit in the rotational direction of each cylinder, and the positional relationship of saw cylinder 01, folding cylinder 1, and jaw cylinder 02 is as shown in Figure 2a.
The result is similar to that shown in , and normal folding continues by repeating this process. When performing the collect run operation, as described above, that is, as shown in FIG . , Figure 3 a to l
The operation is as shown in . That is, the paper 03 introduced between the saw cylinder 01 and the folding cylinder 1 is cut by the engagement between the saw blade 011a of the saw cylinder 01 and the saw blade receiving material 13a of the folding cylinder 1. The region held by the needle 11c constitutes the first section 03cA. The vicinity of the tip of the paper 03 upstream from the cutting part has already been
It is held by needle 11a holding section 03aA. Moreover, this hour hand 11b is located at the second section 03 downstream from the first section 03aA.
bB is maintained (see Figure 3a). When the three cylinders continue to rotate and the folding blade 12b of the folding cylinder 1 reaches a position facing the gripping portion 021b of the gripping cylinder 02, the cam follower 5b moves into the guide groove 8 of the cam 823 .
4, the needle 11b is lowered into the folding cylinder 1 and the second section 03bB is released from the needle 11b. At this time, the grip part 021b of the grip barrel 02
Closes the open mouth and opens the second section 0
Holds the middle part of 3bB. Furthermore, the grip portion 021c of the mouth barrel 02 opens the grip (see FIG. 3b). Furthermore, as the three barrels continue to rotate,
The cam follower 5b follows the guide groove 84 of the cam 823 , and the needle 11b again projects to the outside of the folding cylinder 1 in preparation for holding the next paper 03 (see FIG. 3c).
When the folding cylinder 1 rotates by 120° from the position shown in FIG. 3a, the saw cylinder 01 also rotates by 120°, as shown in FIG. 3d. And the saw blade 011b and the saw blade receiving material 13
The paper 03 is cut by the engagement with the needle 1, and the needle 1
The part held by 1a is the first section 0
At 3aA, it becomes an overlapping state, and the overlapping section is 0.
3aAB is formed, and the vicinity of the tip of the paper 03 upstream from the cut portion is held by the needle 11b. Also,
The second section 03bB held by the gripping portion 021b follows the gripping barrel 02 in a state of being folded in half at the holding portion (see FIG. 3d). When the folding cylinder 1 is subsequently rotated by 120 degrees from the state shown in Fig. 3b, the grip cylinder 1 becomes 0.
2 has been rotated by 90°, so that the folding blade 12c of the folding cylinder 1 reaches a position facing the gripping portion 021c of the gripping cylinder 02 (see FIG. 3e). At this time, the cam 823 has rotated 180 degrees from the position shown in FIG. Section 03aA is
It remains held by the needle 11c. At this time, the grip portion 021c of the grip cylinder 02 faces the folding blade 12c with the grip open. In addition, the mouth part 021d
opens its mouth (see Figure 3e). When the folding drum 1 further rotates by 120 degrees from the position shown in FIG. 3c, the needle 11c holding the first section 03cA
remains protruding from the folding cylinder 1 in preparation for holding the next paper 03 (see Figure 3 f). Further, when the folding cylinder 1 passes through the state shown in Fig. 3g and rotates 240° from the position shown in Fig. 3h, that is, from the position shown in Fig. 3b, the jaw cylinder 02 rotates by 180°. As a result, the folding blade 12a of the folding cylinder 1 reaches a position facing the gripping portion 021d of the gripping cylinder 02 (see FIG. 3g). At this time, the cam 823 has rotated 360° from the position shown in FIG. 3b, and the cam follower 5a
in order to follow the guide groove 84 of the cam 823 , the needle 11
a is lowered into the folding cylinder 11, and the overlapping section 03aAB is released from the needle 11a. At this time, the grip portion 021d of the grip barrel 02 closes the open grip and holds the middle portion of the overlapping section 03aAB. In addition, the grip portion 021a of the grip barrel 02
opens its mouth (see Figure 3h). The folding cylinder 1 continues to rotate further, and the saw cylinder 01, the jaw cylinder 02, and the cam 823 also rotate by 120°, 90°, and 180° each time the folding cylinder rotates 120°. 〜l
The folding process continues through the steps shown in FIG. Third
Figure k shows the state when the folding cylinder 1 is rotated 360 degrees from the state shown in Figure 3b, with the saw cylinder 01, the jaw cylinder 02, and the cam 8.
23 from the state shown in Figure 3b, respectively.
It rotates 360°, 270°, and 540°. Further, the needle 11c holds an overlapping section 03cAB, and the overlapping section 03aAB held by the gripping portion 021d is folded in half at the holding portion and follows the gripping barrel 02, while the gripping portion 021b opened her mouth and held the second section 03
Release bB. In both the normal folding operation (straight run) and the stacked folding operation (collect run) described above, the cam followers 5a, 5b, 5c are regulated by the guide groove 84 of the cam 8, and the cam followers 5a, 5b, 5c are regulated by the guide groove 84 of the cam 8, There is no splashing, and the timing of needle protrusion and needle sinking is stable. Further, switching between the normal folding operation (straight run) and the stacked folding operation (collect run) is performed by replacing the needle sinking segment member 82 and the needle non-sinking segment member 83 of the cam. Since the two segment members 82 and 83 have substantially the same shape except for the shape of the guide groove, the cam center of gravity hardly moves even if the segments are replaced. In this embodiment, a folding drum having three installation units has been described, but the number of installation units is not limited to three. Depending on the number of plates installed, the relative rotational speed between the cam and the plate cylinder, the number of locations where the needle non-sinking guide portion of the cam is installed, etc. may be changed. Mouth parts 021a, 021b, 021 of mouth barrel 02
c, 021d shows an example in which the needles 11a, 11b, and 11c are opened and closed in synchronization with the sinking of the needles 11a, 11b, and 11c by a dedicated cam (not shown) as in the conventional method. , for example 0
The mouth plates 21a and 021c may be removed. Further, the saw cylinder 01 and the jaw cylinder 02 only need to have a circumferential length that is an integral multiple of the cutoff length. (Effect of the invention) Therefore, in this invention, normal folding operation (straight run) and double folding operation (collect run) are possible.
Switching can be done in a short time by simply replacing the segment members on the cam, and there is no need to perform work that requires considerable skill, such as adjusting or checking the positional relationship between the cam and the folding drum. Anyone can accurately perform the above switching. Furthermore, since the cam rotates in exactly the same way during normal folding operation (straight run) and stacked folding operation (collect run), and because the clutch in the cam drive means can be eliminated, conventional By eliminating the need to worry about ``erroneous clutch operation,'' which could cause damage, the mental burden on the worker can also be reduced. In addition, the cam is a single solid body in which the base member and the segment member are fixed together, and the cam drive means has no clutch, which simplifies the mechanism and reduces malfunctions, as well as maintenance and adjustment. The work can be done easily and in a short time. In other words, the effect on work efficiency is enormous. Further, since the cam follower is guided by the guide groove of the cam, the timing of protrusion and sinking of the needle is stable, and there is no problem when holding and releasing the paper or section due to a delay in the operation of the needle. In addition, the cam segments that are replaced for operation switching have approximately the same shape, and the center of gravity of the cam hardly moves when operation is switched, so the cam rotates smoothly during both normal operation and folding operation. This prevents unnecessary force from acting on the support shaft. In other words, it has excellent mechanical stability.

[Brief explanation of the drawing]

FIG. 1a is a schematic front partial cross-sectional view of the folding drum mechanism of the present application, FIG. 1b is a sectional view taken along line AA in FIG. 1a, and FIGS. 1c, d, and e are in FIG. 1a. FIG. 1 f is a front view of the cam and the needle sinking segment member of the cam, FIG. 1 g is a front view of the cam, and FIG.
Figures a to c are diagrams showing the normal folding operation according to the embodiment of this invention, Figures 3 a to 1 are diagrams showing the overlap folding operation according to the embodiment of this invention, and Figure 4 is a schematic front sectional view of the conventional example. 5A to 5C are diagrams showing a normal folding operation according to a conventional example, and FIGS. 6A to 6L are diagrams showing an overlap folding operation according to a conventional example. 1,401... folding cylinder, 2, 2a, 2b, 2c,
402, 402a, 402b, 402c... Needle drive shaft, 3,403... Arm, 4,404...
Axis, 5, 5a, 5b, 5c, 405, 405a,
405b, 405c...cam follower, 8, 8
22, 823 ... cam, 81 ... base member, 82
...Segment member for needle sinking, 83...Segment member for needle non-sinking, 84...Guide groove, 85...Cam drive gear, 9,409...Cam drive means, 91
... Gear, 92, 93 ... Intermediate gear, 94 ... Gear shaft, 10 ... Clutch, 11, 11a, 11
b, 11c, 411, 411a, 411b, 41
1c...needle, 12a, 12b, 12c, 412
a, 412b, 412c...Folding blade, 13
a, 13b, 13c, 413a, 413b, 41
3c...Saw blade support material, 15...Gear, 50,450
... Machine base, 406 ... Bracket, 407 ... Needle cam, 408 ... Gate cam, 01 ... Saw body, 0
11a, 011b, 011c...Saw blade, 02...
Mouth barrel, 021a, 021b, 021c, 021d
...mouth part, 03...paper, 03a, 03b, 0
3c, 03x, 03y, 03z...section,
03aA, 03bA, 03cA...1st section,
03bB...Second section, 03aAB, 03
cAB...Overlapping section.

Claims (1)

[Scope of claim for utility model registration] (1) A folding cylinder, a paper holding section provided near the circumferential surface of the folding cylinder, and a cam with a guide groove that rotates at a rotation speed different from that of the folding cylinder as the folding cylinder rotates. , a cam follower that is guided by a cam and transmits reciprocating motion of sinking inward of the folding cylinder and protruding outward of the folding cylinder to the paper holding section, and the cam includes a plurality of paper holding section sinking guides. A folding drum apparatus characterized in that at least one of the paper holding part sinking guide parts can be replaced with a paper holding part non-sinking guide member. (2) The paper holding part consists of a needle, and the paper holding part sinking guide part consists of two needle sinking segment members that are fixed to the cam base material symmetrically around the cam shaft. The line guide member is made up of a needle non-sinking segment member that can be fixed to the cam base material by replacing the needle sinking segment member, and the needles are installed near the circumference of the folding drum at equal intervals of 120°.A utility model. A folding cylinder device according to claim 1.