JP3352071B2 - Nipping roller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a rotary press.
The present invention relates to a nip roller of a nip roller device that feeds continuous paper that has passed through a former toward a gap between a folding cylinder and a saw cylinder while forming a crease.

[0002]

2. Description of the Related Art A nip roller device includes a pair of nip rollers for sandwiching continuous paper, a driving means for driving the pair of nip rollers to rotate, and an interval adjusting device for adjusting the interval therebetween. For example, in a newspaper rotary press, the nip roller is provided with a central roller and other rollers so that only the left and right margins of the continuous paper that has been printed and passed through the former and folded in the longitudinal direction are sandwiched. A nipping collar having a convex portion larger than the outer diameter of the portion is attached.
756).

The nip color has a function of sharpening a fold of continuous paper, and a function of pulling the continuous paper and feeding it between a folding cylinder and a saw cylinder (for example, 199).
(See “Newspaper Printing Handbook”, page 88, line 24 to page 89, line 3, April 10, 1995, published by The Japan Newspaper Association).

Referring to FIG. 7, the nip roller device will be briefly described in relation to the position of the nip roller device in the rotary press and the peripheral devices. The nip roller device N is a folding device for a rotary press. At the position of the drag roller D above the former F, a pair of nip rollers 1, which divide the longitudinal direction into two by the slitter S and are respectively folded in parallel with the longitudinal direction by the former F, sandwiching the continuous paper W. 1, a driving means for rotating and driving the pair of nip rollers 1, 1 and an interval adjusting device for adjusting the interval between the pair of nip rollers 1, 1 are provided downstream of the former F, As described above, the fold of the continuous paper W sandwiched between the pair of nip rollers 1 and 1 is sharpened, and Pull the connection paper W, so that the more fed between the downstream of the folding cylinder FC and cutting cylinder CC.

[0005] As shown in FIG. 8, each pair of nip rollers 1 has a roller 31 having a length close to the paper width of the continuous paper W formed on a shaft 31 thereof. At both ends, the outer peripheral surface at a position matching the position where the both side edges W1, W2 of the continuous paper W run is pressed so that the both side edges W1, W2 of the continuous paper W are sandwiched and pressed. A nipping collar 10 having a convex portion 11 formed with a slightly larger diameter is mounted via a shaft 31.

The reason why the roller other portion 30 is formed to have a smaller diameter than the convex portion 11 is that the convex portion 11 presses and restrains both side edges W1 and W2 of the continuous paper W.
In order not to restrain the continuous paper W having the waving and restrain it from becoming wrinkled, and to hardly restrain the continuous paper W, the waving becomes large, and the side edge portion W2 of the continuous paper W which is not on the fold side is pressed from the pressing of the convex portion 11. This is so as not to come off.

In the conventional nipping roller 11, in order to improve the pulling of the continuous paper W, the outer peripheral surface of the convex portion 11 of the nipping collar 10 is, for example, disclosed in Japanese Utility Model Application Laid-Open No. 61-49756. The nipping collar 10 disclosed in Japanese Unexamined Utility Model Publication No. 61-49756 is provided with a line, a diamond, or a ceramic processing as disclosed in the official gazette. The structure which presses the both side edges W1 and W2 of the continuous paper W using substantially the full width was adopted.

[0008]

By the way, the nip roller device sandwiches the continuous paper between two nip rollers due to its structure in order to sharpen the fold of the continuous paper and to surely feed the continuous paper to the downstream side. The force is set to be large, a large force is acting on the outer peripheral surface of the convex portion, and further, the peripheral surface speed is set to be slightly faster than the drive rotation portion on the upstream side, and the Because the outer peripheral surface is slightly slipped on the surface of the continuous paper, the processed portion of the outer peripheral surface of the convex portion is severely worn, and after 2-3 years, it has to be replaced with a new nipping collar. .

Therefore, the running cost is increased, and even when a new nipping collar is replaced, it is necessary to remove the nip roller from these driving devices because two nipping rollers are attached to the driving devices. However, the work of exchanging the nip colors was complicated.

The present invention has been made in view of the above points, and has a configuration in which half of the convex portion of a nipping collar having a wide convex portion is used for the first time. When the half of the convex part is worn, the structure is such that the second non-wear part of the convex part is used for the second time, so that the same nipping collar can be used twice. In addition to providing a nip roller that can be replaced with a new one, it can be easily replaced not only with the same nip color, but also with other new nip colors. It is intended to be.

[0011]

In order to solve the above-mentioned object, a nip roller of the present invention sandwiches a continuous paper that has passed through a former and has been folded in two in the longitudinal direction, and has a folding cylinder and a saw while being creased. In the nip roller of the rotary press that sends out the paper between the cylinders, when the roller is attached to both ends of the roller and the other end having shafts at both ends, the half width position S / 2 is folded in half. A nip collar having a width S substantially aligned with the position of each side edge of the continuous paper and having a ring-shaped convex portion having a diameter larger than the diameter of the other portion of the roller is provided. In the installation of
It is characterized in that it has a detachable mechanism that can be attached and detached and can be attached by reversing the axial direction of the convex portion by 180 degrees.

[0012] The nipping collar is a split collar having at least one side surface of the convex portion provided with a fastening portion having a diameter smaller than the diameter of the other portion of the roller, and the other portion of the roller has an end surface thereof. The structure has a hollow portion in which the fastening portion is stored, or the nipping collar is a split collar in which a fastening portion having substantially the same diameter as the diameter of the other portion of the roller is provided on both side surfaces of the convex portion. It may be a structure.

According to the above configuration, the S / 2 portion which is half the width S of the convex portion of the nip color is used for the first time. If the S / 2 portion of half of the width S of the convex portion is worn and the operation is insufficient, the remaining half of the non-abraded S / 2 portion of the convex portion is used for the second time. , The axial direction of the convex portion of the nipping collar is set to 180
Reverse the degree. At this time, in the case where the nip color is formed of a split color, the axial direction of the convex portion of the nip color can be easily reversed.

[0014]

FIG. 1 is a perspective view of one embodiment of a nip roller according to the present invention, and FIG. 2 is an exploded perspective view of one embodiment in which a nip collar portion is enlarged.

In FIG. 1 and FIG. 2, each nip roller 1 is provided with a symmetrical roller 30 having a length L1 on its shaft 31 and a symmetrical shaft 31 at both ends of the roller other portion 30. Shaped collar 12,
And a nipping collar 10 having a configuration 12.

The nip collar 10 composed of the split collars 12 and 12 has a convex portion 11 which is larger than the diameter of the roller other portion 30 and has a width S, and one side surface of the convex portion 11. And a tightening portion 13 formed with a smaller diameter than the convex portion 11.

A hole 14 and a screw hole 15 are formed in the tightening portion 13, and the collar 14 is fastened to the shaft 31 by tightening the split collars 12 with tightening bolts 21. ing. Note that the combined fastening portions 13, 1 are provided on both end surfaces of the roller other portion 30.
A hollow part 32 having a depth capable of storing the third part 3 is formed,
The shaft 31 has a shape protruding from the hollow portion 32.

The two-part collars 12, 12 are tightened with the tightening bolts 21, 21, so that the divided two
The split collars 12 and 12 are integrated as a nip collar 10 and fixed to a shaft 31 to form the nip roller 1 shown in FIG.

The width S of the convex portion 11 of the nipping collar 10 attached to both ends of the roller other portion 30 is:
It is necessary to hold both side edges W1 and W2 of the continuous paper W to sharpen the fold of the side edge W1 on the fold side, and to draw the continuous paper W and feed it between the folding cylinder FC and the saw cylinder CC. When the nipping collar 10 is attached to both ends of the roller other portion 30, the center position of the width S of the convex portion 11, that is, the half width S / 2, The position portion has a width that substantially matches the position of both side edges W1 and W2 of the running continuous paper W.

The convex portion 11 is viewed from the radial direction of the shaft 31.
As described above, the portion including the convex portion 11 is formed of the split collars 12 and 12 having a shape of being divided into two so as to be able to be attached and detached. Further, in order to improve the pulling of the continuous paper W, for example, a truncated square pyramid projection 16 of a diamond illustrated in FIG.
It is provided on the entire surface.

The split collars 12, 12 are combined as shown in FIG.
1, the two convex portions 11 of the two nipping collars 10 attached to both ends of the roller other portion 30 at that time.
Is X = L1 + S. When the width of the continuous paper W folded in two is T, the distance X between the centers of the convex portions 11 and the width T of the continuous paper W folded in two are X = L1 +
It has a relationship of S ≒ T.

As shown in FIG. 1, the collar 32 is divided into two on the shaft 32.
When the rotary press of the nipping roller 1 to which the nipping rollers 2 and 12 are mounted is operated, the half portion S / 2 of the convex portion 11 near the center of the nipping roller 1 is formed on both side edges W of the continuous paper W.
1. Hold down W2 to sharpen the fold at the side edge W1 on the fold side, and pull the continuous paper W to fold the cylinder FC and the saw cylinder CC.
In between.

After two to three years of use, a half portion S / 2 of the convex portion 11 is worn out. For example, the height of the truncated pyramid projection 16 of the diamond is reduced to about half, and If the action of the collar becomes insufficient, the tightening by the tightening bolts 21 and 21 is released and the split collar 12 and
12 is removed from the shaft 31 in the radial direction thereof, and the axial direction of the split collars 12 and 12 is inverted by 180 degrees, and the nipping collar 1 of the inverted split collars 12 and 12 is inverted.
0 is recombined with the shaft 31 from its radial direction, the tightening portion 13 is housed in the hollow portion 32, and tightened again with the tightening bolts 21, 21 using the bolt tightening holes 33 to form the nip roller 1.

As a result, even if the used portion of the convex portion 11 is replaced, the center distance X of the convex portion 11 mounted on both ends of the roller other portion 30 is X = L1 + S, and the convex portion 1
The relationship X = L1 + S ≒ T holds between the center distance X of 1 and the width T of the continuous paper W folded in half.

Then, when the rotary press starts operating, the half portion S / 2 of the convex portion 11 which is newly located near the center of the nipping roller 1 presses the both side edges W1 and W2 of the continuous paper W to be creased. The fold of the side edge W1 is sharpened, and the continuous paper W is drawn and fed between the folding cylinder FC and the saw cylinder CC. That is, the nipping collar 10 can be used a second time.

FIG. 3 is an exploded perspective view of another embodiment in which a nip collar portion is enlarged.

In the same figure, the nip color composed of the two divided halves 123, 123 is a convex portion 11 having a width S, similar to the nip color 10 described in FIG. The convex portions 11 are provided on both side surfaces of the convex portions 11 of the split collars 123 constituting the collar.
Each has a fastening portion 133 formed with a smaller diameter.

The tightening portion 133 has a hole 14 and a screw hole 1.
5 are respectively drilled, and tightening bolts 21 and 21 are provided.
The two-part collars 123 are fixed to the shaft 31 by tightening. In addition,
A hollow portion 32 having a depth to accommodate the combined tightening portions 133 and 133 is formed in both end surfaces of the roller other portion 30, and the shaft 31 protrudes from the hollow portion 32.

The fastening portions 133 and 133 are housed in the hollow portion 32 of the shaft 31 as the combined nipping collar, and the two-part collar 12 is fastened by fastening bolts 21 and 21.
By tightening 3, 123, the split halves 123, 123 are integrated as a nip collar and fixed to the shaft 31 to form the nip roller 1 shown in FIG.

After the tightening portion 133 is stored in the hollow portion 32, the tightening bolts 21 and 21 can be tightened.
A bolt fastening hole 33 is provided at each end of the roller other portion 30.

The split collar 123 shown in FIG.
In the case of 123, the shaft 31 can be formed by simply tightening one of the two tightening portions 133 and 133 with the tightening bolts 21 and 21.
Therefore, the bolt fastening holes 33 at each end of the roller other portion 30 may not be provided.

The split collars 123, 1 having two fastening portions 133, 133 on both of the convex portions 11 are provided.
It is obvious that it is obvious that the nip roller 1 formed at 23 can be used twice, similarly to the nip roller 1 configured with the split collars 12 and 12 in FIG. Omitted.

FIG. 4 is a perspective view of another embodiment of the nip roller according to the present invention, and FIG. 5 is an exploded perspective view of one embodiment in which a nip collar portion is enlarged.

In FIG. 4 and FIG.
5, 125 have a diameter substantially equal to the diameter of the roller other portion 30 on both side surfaces of the convex portion 11 having the width S, and the tightening portions 13 having the width S1.
5,135 are respectively formed. At this time, the length of the other roller portion 30 is L2 (L2 <L1).

The split collars 125, 125 are combined as shown in FIG. 4 and tightened with the tightening bolts 21, 21, so that the split collars 125, 125 are
The distance X between the centers of the convex portions 11 of the two nipping collars 10 attached to both ends of the roller other portion 30 at that time is X = L2 + S + 2 × S1. When the width of the folded continuous paper W is T, the distance X between the centers of the convex portions 11 and the width T of the folded continuous paper W are X
= L2 + S + 2 × S1 ≒ T.

As shown in FIG. 4, the collar 1 is divided into two on the shaft 31.
When the rotary press of the nipping roller 1 to which the rollers 25 and 125 are mounted is operated, the half portion S / 2 of the convex portion 11 near the center of the nipping roller 1 is moved to the both side edges W1 and W2 of the continuous paper W. The paper is pressed to sharpen the fold at the side edge W1 on the fold side, and the continuous paper W is drawn and fed between the folding cylinder FC and the saw cylinder CC.

If the half portion S / 2 of the convex portion 11 is worn out by use for two to three years and the function as the nipping roller 1 becomes insufficient, the tightening bolts 21
Halved by unfastening
Is removed from the shaft 31 in the radial direction thereof, the axial direction of the split collars 125, 125 is inverted by 180 degrees, and the nip colors 1 of the inverted split collars 12, 12 are inverted.
0 is re-assembled to the shaft 31 from its radial direction, and tightened and fixed again with the tightening bolts 21, 21 to form the nip roller 1.

As a result, even if the used portions of the convex portions 11 are exchanged, the distance X between the centers of the convex portions 11 attached to both ends of the roller other portion 30 is X = L2 + S + 2 × S1.

A split collar 125,1 having two fastening portions 135,135 on both of the convex portions 11 is provided.
It is obvious from the description that the nip roller 1 formed at 25 can be used twice, similarly to the nip roller 1 configured with the split collars 12 and 12 in FIG. Omitted.

In each of the embodiments, the fastening bolts 21, 21 are each provided with a fastening portion 13, 133,
It is desirable not to protrude from the outer peripheral surface of 135.

The nipping collar 10 may be composed of only the convex portion 11 of the halved collar having the width S.
At this time, in order to attach the convex portion 11 of the split collar having the width S to both side surfaces of the roller other portion 30, the roller other portion is tightened from the side surface of the convex portion 11 of the split collar with the fastening bolts 21 and 21. A fixing method of fixing to 30 is used.

In the above description, the nipping collar 1 attached to both ends of the roller other part 30 of the nipping roller 1
Have described the structure formed by the halved collars 12, 123, and 125, but the invention is not necessarily limited to the structure having the halved structure, and the nip is divided into two or more. It may have a color structure. This 2
The width of the convex portion 11 formed on the nipping collar 10 described above is also S in the case of the nipping color divided as described above.

[0043]

As described above, according to the present invention, it is possible to effectively use the entire surface of the convex portion by inverting the axial direction of the nipping collar by 180 degrees, and to use the convex portion of the nipping roller. The shape can be used twice as long as before. Therefore, the run nig cost for the convex portion could be reduced to approximately half.

According to the second and third aspects of the present invention, since the nipping collar is formed of a two-part collar, when reversing the direction of the convex portion and newly replacing the same, two nip colors are taken from the radial direction of the shaft. It was easy to remove the split collar by unfastening it, reversing the direction and re-attaching it or attaching a new one, making it very easy to replace the nip collar having a convex portion.

According to the third aspect of the present invention, since the fastening portion is formed on the outer peripheral surface having substantially the same diameter as the other portion of the roller, the wavy generated on the continuous paper can be freely moved and deformed while being in contact with the other portion of the roller. Thus, the running continuous paper does not get caught on the step portion on the outer peripheral surface of the other portion of the roller, so that unnecessary streak-like scratches do not occur.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a nip roller according to the present invention.

FIG. 2 is an exploded perspective view of an embodiment in which a nipping collar portion is enlarged.

FIG. 3 is an exploded perspective view of another embodiment in which a nipping collar portion is enlarged.

FIG. 4 is a perspective view of another embodiment of the nip roller according to the present invention.

FIG. 5 is an exploded perspective view of an embodiment in which a nip collar portion is enlarged.

FIG. 6 is an enlarged view of one example of a diamond provided on the outer peripheral surface of the convex portion of the nipping collar.

FIG. 7 is a diagram illustrating the position of the nipping roller device occupied by the rotary press and related devices with peripheral devices.

FIG. 8 is a position explanatory diagram illustrating a positional relationship between a nip color of a nip roller and continuous paper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nipping roller 10 Nipping collar 11 Convex part 12, 123, 125 Split collar 13, 133, 135 Tightening part 14 Hole 15 Screw hole 16 Diamond truncated pyramid projection 21 Tightening bolt 30 Roller other part 31 Shaft 32 Hollow part 33 Bolt tightening hole D Drag roller F Former N Nipping roller device S Slitter W Continuous paper W1 Side edge of continuous paper (folded side edge) W2 Side edge of continuous paper (side edge not folded side) Part) CC saw cylinder FC folding cylinder

Claims (3)

(57) [Claims] 1. A nipping roller of a rotary press which sandwiches a continuous paper folded in a longitudinal direction through a former and feeds the folded paper between a folding cylinder and a saw cylinder while forming a fold, wherein shafts are provided at both ends. Half width position S when mounted on both ends of the roller other part
/ 2 has a width S approximately matching the position of each side edge of the folded continuous paper, and has a nipping collar formed with an annular convex portion having a diameter larger than the diameter of the other portion of the roller, The above-mentioned nipping collar can be attached and detached when mounted on the shaft,
A nip roller comprising a detachable mechanism that can be attached by reversing the axial direction of the convex portion by 180 degrees. 2. The nipping collar is a split collar in which a fastening portion having a diameter smaller than the diameter of the other portion of the roller is provided on at least one side surface of the convex portion.
The nipping roller according to claim 1, wherein the other roller portion includes a hollow portion on both end surfaces in which a fastening portion is stored. 3. The collar according to claim 1, wherein the nipping collar is a split collar having a fastening portion having a diameter substantially equal to the diameter of the other portion of the roller on both side surfaces of the convex portion. Nipping roller.