JP2567050B2 - Chopper roll of chopper folding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a chopper roll of a chopper folding device attached to a rotary printing press, which is intended to facilitate attachment and detachment.

<Prior Art> A web-fed rotary printing machine is equipped with a folding machine that cuts a dried and cooled web after printing and folds it in a width direction or a length direction. . Folding by this folding machine includes former folding in which the web before cutting is half-folded in the width direction with a former, and parallel folding in which the signature after cutting is folded half or four in the length direction with an origami cylinder. There are two-fold folding or parallel folding, and chopper folding in which a folded signature is folded in half in the orthogonal direction with a chopper. These folding methods are selected according to the signature specifications and used independently. , Some of them are combined.

Among the above-mentioned folding devices, the chopper folding device is a plate-shaped chopper blade that vertically stops toward the center of the stopped signature by stopping the signature being conveyed by the conveyor belt against the paper rest. Is folded halfway by folding the signature from the center and pushing it between the nipping rolls below.

FIG. 3 shows a schematic configuration of a conventional chopper folding device,
The drawing shows a view taken along the line IV-IV in FIG. The parallel-folded signature is conveyed by the conveyor belt 2 wound around the tension pulley 1 until the upper surface of the plate 11 hits the front guide 3. A slit 12 is formed in the plate 11 in the center in the width direction along the signature conveyance direction, and a mouthpiece 13 that guides the signature downward from the slit 12 is provided at the edge of the plate 11 facing the slit 12 and facing each other. Each is installed. A pair of upper chopper rolls 14 and 15 and a pair of chopper rolls 16 and 17 are arranged below the mouthpiece 13, and these chopper rolls 14, 15, 16 and 17 are driven by a drive source (not shown) in FIG. It is designed to be rotated in the direction of the arrow. Further, an impeller 19 having a plurality of blades 18 is arranged below the chopper rolls 16 and 17, and the impeller 19 is rotationally driven by a drive source (not shown). Meanwhile, the base 13
A chopper blade 20 is provided above. The chopper blade 20 is fixed to the tip of an arm 21, and the arm 21 is rotatably supported by a support shaft 22 and driven by a drive source (not shown) in synchronism with the loading of a signature and the chopper blade 20. Is moved in the substantially vertical direction toward the gap between the bases 13.

The signature that has been loaded onto the plate 11 is stopped by the guide 3 before, and is folded in half by the descent of the chopper blade 20 to be pushed between the pair of chopper rolls 14 and 15. Chopper roll 14,15,16,1
After the pressure is applied between the blades 7 for smoothing, the blades 7 sequentially fall between the blades 18 of the impeller 19. After that, the signatures are discharged onto a conveyor (not shown) as the impeller 19 rotates.

In recent years, chopper rolls 14,15,16,1 as measures against stitches
Align the groove of 7 with the position of the stitch or chopper roll 1
There is an increasing demand for rubber rolls on the surfaces of 4, 15, 16, and 17. In this case, the chopper roll needs to be replaced.

FIG. 5 shows a view taken along the line V-V in FIG. 4 to explain how the chopper rolls 14, 15, 16 and 17 are attached to the frame.

The shaft portions 14a at both ends of the upper chopper roll 14 are rotatably supported by a frame 24 via bearings 23, and the shaft end on one side (the left end in the drawing) projects from the frame 24 and a gear 25 is fixed. Shafts 17a at both ends of the lower chopper roll 17 are rotatably supported by a frame 24 via bearings 26, and one shaft end projects from the frame 24 and a gear 27 is fixed. Metals 28 are fixed to the shafts 17a inside the frame 24, and needle bearings 29 are attached to the metal 28.
A lever 30 is rotatably supported via the lever 30, and the lever 30 is fixed to the metal 28 by a nut 31. A bearing 15 of the upper chopper roll 15 is attached to the lever 30 via an alignment bearing 32.
a is rotatably supported, and the shaft end on one side penetrates the frame 24 and the gear 33 is fixed. Chopper roll 14,1
Gears 25,
Gearboxes (not shown) for transmitting power are provided to 27 and 33.

 Next, the procedure for removing the chopper rolls 14 and 15 will be described.

The tension pulley 1 is moved to loosen the conveyor belt 2, and the conveyor belt 2 is moved laterally. This guide 3,
The plate 11, the gear box and the paper guide (not shown) are removed, and the upper parts of the chopper rolls 14 and 15 are opened. The bearing 23 and the gear 25 of the chopper roll 14 are removed, the chopper roll 14 is moved to the left in FIG. 5, the right shaft portion 14a is pulled out from the frame 24, and the chopper roll 14 is removed upward.
The inclusions of the chopper roll 15 with the gear 33 and the frame 24 are removed, and the fixing members such as bolts are removed. Loosen the nut 31 and rotate the lever 30 with respect to the metal 28. The lever 30 on the right side is rotated leftward in FIG. 4 around the chopper roll 17 to remove the right shaft portion 15a of the chopper roll 15 from the alignment bearing 32, and the chopper roll 15 is removed upward. As a result, the chopper rolls 14 and 15 are disengaged, and the chopper rolls that meet the request are replaced in the reverse order of the above.

<Problems to be solved by the invention> Since the conventional chopper rolls 14, 15, 16 and 17 are not designed to be replaced, the replacement work is very complicated, and even a professional operator can take two days. It took some time. For this reason, it takes a lot of time to replace the chopper roll for the stitch measures and the rubber roll on the surface.
Machine downtime was long and productivity was poor.

The present invention has been made in view of the above circumstances, and provides a chopper roll that can be easily replaced, thereby shortening the replacement time of the chopper roll, minimizing the decrease in productivity to a minimum, such as stitch measures. The purpose is to be able to respond to requests.

<Means for Solving the Problems> The structure of the present invention for achieving the above-mentioned object is a chopper folding device that folds a signature with a chopper blade and presses it between opposing chopper rolls to fold the signature in half. In the chopper roll, the roll main body pressing the signature, and detachably provided at one end side of the roll main body and supported rotatably and axially movable on the frame side of the chopper folding device. A first rotation shaft and a second end that is detachably provided on the other end side of the roll body coaxially with the first rotation shaft and is rotatably and axially fixedly supported on the frame side of the chopper folding device. It is characterized by comprising a rotating shaft.

<Operation> When the chopper roll is removed, the first rotary shaft and the second rotary shaft are not connected to the roll body, and the first rotary shaft is moved in the axial direction. The roll main body is moved in the axial direction, and the roll main body is detached from the first rotary shaft and the second rotary shaft to be removed to the outside. When installing another roll main body, the roll main body is attached in the reverse order of the above.

<Embodiment> FIG. 1 is a development plane showing a mounting state of a chopper roll according to an embodiment of the present invention, and FIG. 2 is a view taken along the arrow II in FIG. Note that FIG. 1 corresponds to FIG. 5 of the related art, and the same members are denoted by the same reference numerals and duplicate description will be omitted.

A pair of upper chopper rolls 41 and 42 are arranged below the plate 11 (see FIGS. 3 and 4), and a pair of lower chopper rolls 16 and 17 are arranged below the chopper rolls 41 and 42. Has been done.

The chopper rolls 41, 42 include first rotary shafts 41a, 42a on one end side (right side in the figure) and second rotary shafts 41 on the other end side (left side in the figure).
b, 42b, and the central roll body 41c, 42c,
The roll main bodies 41c, 42c and the first rotary shafts 41a, 42a, and the roll main bodies 41c, 42c and the second rotary shafts 41b, 42b are connected by bolts 43, 44, respectively.

The first rotation shaft 41a of the chopper roll 41 is supported by the frame 24 via a metal 45 and a needle bearing 46 so as to be rotatable and movable in the axial direction (left-right direction in the drawing). The second rotary shaft 41b of the chopper roll 41 is rotatably supported by the frame 24 via a bearing 47, and the second rotary shaft 41b is regulated in a fixed state in the axial direction by a holding member 48. The first rotation shaft 42a of the chopper roll 42 is rotatably supported by the lever 30 via a bearing 49, and the second rotation shaft 42b is rotatably supported by the lever 30 via a bearing 50. As shown in FIG. 2, the first rotation shaft 42a of the chopper roll 42
The lever 30 of the part that supports the upper lever 30a and the lower lever 30b is divided into an upper lever 30a and a lower lever 30b.
Are connected by bolts 51. By splitting the lever 30 and removing the upper lever 30a, the bearing 49 becomes movable left and right, and the first rotation shaft 42a becomes movable in the axial direction.

 Next, a procedure for removing the chopper rolls 41 and 42 will be described.

The conveyor belt 2, the front guide 3, the plate 11, the gear box and the paper guide are removed, and the upper parts of the chopper rolls 41 and 42 are opened. The roll main body 41c and the first rotary shaft 41a and the second rotary shaft 41b are brought into a non-bonded state via the bolts 43 of the chopper roll 41. For example, the first rotary shaft 41a is moved to the right by 20 mm to separate the first rotary shaft 41a and the roll main body 41c, and then the roll main body 41c is moved to the right to separate the roll main body 41c and the second rotary shaft 41b. Then, the roll body 41c is removed upward. Remove the bolt 44 of the chopper roll 42 and roll body 42
c and the first rotary shaft 42a and the second rotary shaft 42b are brought into a non-bonded state. Remove the bolt 51 of the lever 30 on the right side in the figure and remove the upper lever 30a. The first rotary shaft 42a is moved to the right side together with the bearing 49, for example, 20 mm to separate the first rotary shaft 42a and the roll main body 42c, and then the roll main body 42c is moved to the right side to roll main body 42c and the second rotary shaft 42b. And the roll body 42c is removed upward.

When installing another roll body (rubber roll, etc.),
The procedure is the reverse of the above.

The chopper rolls 41 and 42 described above are roll main bodies 41c and 42c.
Since the first rotary shaft 41a, 42a and the second rotary shaft 41b, 42b are separable and the first rotary shaft 41a, 42a is axially movable, the first rotary shaft 41a, 42a and the second rotary shaft The shafts 41b, 42b and the roll bodies 41c, 42c are set in a non-bonded state, and the first rotating shafts 41a, 42a
The roll main bodies 41c, 42c can be easily removed (in about 1 hour) by moving the rolls in the axial direction.

<Effects of the Invention> In the chopper roll of the chopper folding device of the present invention, the roll main body and the first rotary shaft and the second rotary shaft are detachable, and the first rotary shaft is movably supported in the axial direction. By separating the main body from the first rotary shaft and the second rotary shaft and moving the first rotary shaft, the roll main body can be removed very easily. As a result, the chopper roll can be easily replaced, the chopper roll replacement time is dramatically shortened, and it is possible to minimize the reduction in productivity and meet the demand for stitch countermeasures. .

[Brief description of drawings]

FIG. 1 is a developed plan view showing a mounted state of a chopper roll according to an embodiment of the present invention, FIG. 2 is a view taken along the arrow II in FIG. 1, and FIG. 3 is a schematic configuration diagram of a chopper folding device. FIG. 4 is a view taken along the line IV-IV in FIG. 3, and FIG. 5 is a view taken along the line VV in FIG. In the drawing, 11 is a plate, 20 is a chopper blade, 41, 42
Is a chopper roll, 43 and 44 are bolts, 45 is metal, 46 is a needle bearing, 47, 49 and 50 are bearings, and 48 is a holding member.

 ─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-59-212507 (JP, A) JP-A-58-113623 (JP, A) JP-A-60-197567 (JP, A) JP-A-59- 4568 (JP, A) Actually open 62-181717 (JP, U) Actually open 61-81012 (JP, U) Actually open 61-38673 (JP, U) Actually public 34-18724 (JP, Y1)

Claims (1)

(57) [Claims] 1. A chopper roll in a chopper folding device that folds a signature with a chopper blade and presses it between opposing chopper rolls in a chopper folding device, the roll main body pressing the signature. A first rotating shaft detachably provided on one end side of the roll body and rotatably supported on the frame side of the chopper folding device and movably in an axial direction; and a first rotary shaft on the other end side of the roll body. A chopper roll for a chopper folding device, comprising: a second rotary shaft that is detachably provided coaxially with the rotary shaft and is rotatably supported on the frame side of the chopper folding device in a fixed state in the axial direction.