JP2000255866A - Blade angle regulating device for imeller of folding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve section discharge accuracy without replacing blades or an impeller by arranging a plurality of blade shafts rotatably supported with the circumferential part of an impeller boss at nearly equal intervals, fitting a plurality of blades to the bade shaft, and rotationally moving the blade shaft to be able to change the angle of the blade. SOLUTION: An impeller device 43 fits impeller bossess 48 to drive shafts 47, 47a rotatably supported between a pair of frames 45, 45a. To the circumferential part of the impeller boss 48, a plurality of blade shafts 49 rotatably supported at nearly equal intervals, and a plurality of blades 51 are fitted to the blade shaft 49 toward the outside. When a regulating shaft 65 is rotationally moved to rotationally move a cam 61, a lever 53 is swung following to change of the radius of the cam 61, the blade shaft 49 is rotationally moved, to change the gap between the blades 51, namely, the angle is changed. In this way, by changing the angles of the respective blades 51 and regulating the gaps between the respective blades 51 to optimum, deviation of carried section is restrained to minimum, and hence section discharge accuracy can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding machine which is provided between a folding machine for folding a web printed on an offset printing machine or the like to form a signature and a paper discharge conveyor for discharging the signature. A blade angle adjusting device.

[0002]

2. Description of the Related Art Conventionally, a folding machine 1 as shown in FIG.
Is a cylinder-type horizontal folding device 11 composed of a former 3 for vertically folding a web W and a cutting cylinder 5, a ramming cylinder 7, and a biting cylinder 9.
And a transport belt device 13 for horizontally transporting the signature A cut and laterally folded by the cylinder-type lateral folding device 11
And is composed of The folded signature A is conveyed at a high speed by the conveyor belt device 13 and received by the impeller device 15, and then is discharged at regular intervals onto a paper discharge conveyor 17 provided below the impeller device 15. Is done.

A chopper folding machine 19 as shown in FIGS. 9 and 10 has a former 3 for vertically folding a web W, a cutting cylinder 5, a plunging cylinder 7,
A cylinder-type lateral folding device 11 with the biting cylinder 9, a transport belt device 13 for horizontally transporting the signature A cut and laterally folded by the cylinder-type lateral folding device 11, and a transport belt device 13 for horizontally transporting the signature A Chopper folding device 2 that is stopped by stopper 40 and folds signature A by chopper
1 and 1. The signatures A chopper-folded by the chopper folding device 21 fall and are received by the impeller device 15, and then discharged at regular intervals onto a paper discharge conveyor 17 provided below the impeller device 15.

The chopper folding device 21 has a pair of chopper rollers 23 and a chopper blade 25 inserted between the pair of chopper rollers 23, as shown in FIG. The chopper blade 25 is supported by a chopper arm 29 of a chopper shaft 27.

[0005] The chopper shaft 27 is drivingly connected to a driving disk 33 by a crank arm 31. The driving disk 33 is reciprocally rotated by being driven to rotate by the folding machine body. Thereby, the chopper blade 25 reciprocates vertically in a relatively large arc with the chopper shaft 27 as an axis, and is inserted between the pair of chopper rollers 23.

As shown in FIG. 11, the impeller device 15 has an impeller boss 37 mounted on a rotating shaft 35 rotated by a drive motor (not shown). A plurality of blades 39 are attached to the circumference of the impeller boss 37 at appropriate intervals toward the outside. Therefore, the shape of the impeller is fixed, and changing the shape requires replacing all the blades or the entire impeller.

[0007]

In the conventional impeller device 15 shown in FIG. 11, the signature A sent between the blades 39 at a speed of several hundred meters per minute, for example, is used. The signature A is not damaged, and the signature is damaged due to a break between the blades 39, and the accuracy of discharging the signature A is deteriorated. In addition, this also has an adverse effect on a stacker and a bundler in a later process.

There are times when it is desired to adjust the gap Z between the blades, that is, the angle of the blades, depending on the printing speed, paper quality, and the size of the signature.
Is fixed to the impeller boss 37, the angle of the blade cannot be adjusted, and the paper ejection accuracy is poor. If it is necessary to change, the entire impeller device 15 must be changed, or the entire blade 39 must be changed. It takes a long time to switch, and the productivity and paper ejection accuracy are poor.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the signature discharge accuracy and to convey signatures without changing the clearance between the blades, that is, the angle of the blades, depending on the printing speed, paper quality, and signature size, and replacing the impeller device 15. It is an object of the present invention to provide a blade angle adjusting device for a folding machine impeller, which speeds up the operation.

[0010]

In order to achieve the above object, a blade angle adjusting device for a folding machine impeller according to the present invention according to the present invention comprises a folding machine for folding a printed web into a signature. A blade angle adjusting device for a folding machine impeller provided between a paper discharge conveyor for discharging signatures, wherein the impeller boss is mounted on a drive shaft that is pivotally supported between a pair of frames. A plurality of blade shafts arranged at substantially equal intervals on the circumference of the boss and rotatably supported, a plurality of blades attached to the blade shaft, and rotating the blade shaft to adjust the angle of the blade. And rotation means for making the change possible.

Therefore, the printed web is folded by a folding machine to form a signature, and the signature is conveyed at a high speed and received between the blades of the impeller device, and then placed on a discharge conveyor at a constant interval. Are discharged in order.

Each blade changes the angle between the blades by the rotation of the blade shaft to change the clearance between the blades, thereby suppressing the occurrence of a signature rampage. Thus, the accuracy of signature delivery can be improved, and the speed of signature transport can be increased.

According to a second aspect of the present invention, there is provided a blade angle adjusting device for a folding machine impeller according to the first aspect, further comprising a lever mounted on each blade shaft and having a cam follower at a tip. A cam that is engaged with the cam follower by a pressing member provided for the lever, and a cam that is coaxially inserted into a hollow portion that forms the drive shaft and is rotatably supported independently of the drive shaft. An adjusting shaft to be attached, a helical gear attached to one end of the adjusting shaft and rotating a cam,
A spur gear attached to one end of the drive shaft to rotate the folding machine impeller, and a helical gear having the same number of teeth as the gear ratio of the spur gear train integrated with the helical gear and driving the spur gear to drive the spur gear;
The integrated helical gear and drive spur gear are rotatably inserted through the sliding shaft for axial positioning, a screw shaft screwed to one end of the sliding shaft, and the other end of the screw shaft. It is characterized by comprising a mounted bevel gear, a drive bevel gear meshing with the bevel gear, and a rotary drive means for driving a shaft to which the drive bevel gear is attached.

Therefore, by rotating the shaft on which the driving bevel gear is mounted, the screw shaft is rotated, and the sliding shaft is slid to move the integrated helical gear laterally. The helical gear attached to the adjustment shaft by the lateral movement of the integrated helical gear is slidably rotated along the torsion direction of the tooth surface of the integrated helical gear, and the adjusting shaft is rotated so that the cam is disengaged. Rotate. By the rotation of the cam, a lever whose tip follower is pressed against the cam by the pressing member swings, the blade shaft is rotated, and the blade changes the angle of the blade, that is, the gap between the blades. The same operation as that of 1 is achieved.

According to a third aspect of the present invention, there is provided a blade angle adjusting device for a folding machine impeller according to the first aspect of the present invention, wherein a handle wheel is provided at one end of a shaft to which a driving counter gear is attached. Is provided.

Therefore, by rotating the steering wheel, the angle of the blade of the impeller can be adjusted during driving,
The same operation as the first aspect is achieved.

According to a fourth aspect of the present invention, there is provided a blade angle adjusting device for a folding machine impeller according to the first aspect of the present invention, wherein a motor is attached to one end of a shaft to which a driving counter gear is attached. It is characterized by having been provided.

Therefore, the rotation of the motor makes it possible to adjust the angle of the blades of the impeller during operation, thereby achieving the same operation as in the first aspect, enabling remote control and further improving the productivity.

According to a fifth aspect of the present invention, there is provided a blade angle adjusting device for a folding machine impeller according to the first aspect of the present invention, wherein a motor is attached to one end of a shaft to which a driving counter gear is attached. And a potentiometer for converting the rotation angle of the blade shaft into an electric signal is provided at the other end.

Therefore, the rotation of the motor and the detection of the rotation angle of the blade shaft by the potentiometer make it possible to adjust the angle of the blades of the impeller during operation. The angle can be preset, and the productivity is further improved.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings.

The blade angle adjusting device of the folding machine impeller is similar to the folding machine 1 shown in FIG. 8 described in the prior art and the impeller device 15 in the chopper folding machine 19 shown in FIGS. The description of the folding machine 1 and the chopper folding machine 19 will be omitted because they are used.

Referring to FIG. 1, the impeller device 43 includes drive shafts 47, 47 pivotally supported between a pair of frames 45, 45a.
The impeller boss 48 is attached to a. A plurality of blade shafts 49 rotatably supported at substantially equal intervals are attached to a circumferential portion of the impeller boss 48, and a plurality of blades 51 are attached to the blade shaft 49 outward. I have. The adjustment shaft 65 is coaxially inserted into a hollow portion forming the drive shafts 47 and 47a, and is rotatably supported by a plurality of bearings 63 independently of the drive shafts 47 and 47a. ing.

A helical gear 67 is attached to one end of the adjustment shaft 65, and a spur gear 69 is attached to one end of the drive shaft 47. A helical gear 71 is provided which is integrated with a driving spur gear 70 that meshes with the helical gear 67 to drive the spur gear 69 and has the same gear ratio as the gear ratio of the spur gear 69 and the driving spur gear 70. The sliding shaft 73 is an integrated helical gear 71
And a driving spur gear 70 are rotatably inserted therethrough, axially positioned, supported by a boss 77 and a bearing 78, and a sliding key 76 is fixed between the boss 77, rotation is restricted, and rotation is restricted. Sliding becomes possible. The boss 77 is fixed to the frame 45 by a bracket 80, and the bearing 78 is fitted to the boss 79. The boss 79 is fitted to the frame 45. Screw shaft 7
5 is screwed at one end of the sliding shaft 73 and is supported by a bearing 82 fitted on a boss 79 to attach a bevel gear 81.

Referring to FIGS. 2 and 3, the blade shaft 49 is provided with a lever 53 having a cam follower 52 at the tip. The cam 61 is in pressure contact with the cam follower 52 by a screw shaft 55, a spring 57, and a bearing 59 as a pressing member provided to the lever 53. 8
In the case of a single blade, the blade shaft 49
The lever 53 is attached to every other one of them, and as shown in FIGS. 2 and 3, four sets are separately arranged on both sides. Therefore, two cams 61 are required. If there are few feathers,
For example, in the case of four blades, the lever 5 on one side
3 is unnecessary and only one cam 61 is required.

Referring to FIG. 5, two bearings are provided with a rotatable shaft 86 fitted with a driving bevel gear 83 meshing with a bevel gear 81 and a handle wheel 85 attached to one end thereof. 84 is supported.

Referring to FIG. 6, a driving bevel gear 83 meshing with the bevel gear 81 is mounted, and a coupling 91 is provided at one end.
A rotatable shaft 86 is mounted on two bearings 84 fitted on a bracket 89, and a motor 93 is fixedly mounted on a coupling 91.

Referring to FIG. 7, a drive bevel gear 83 meshing with the bevel gear 81 is mounted, and a coupling 91 is provided at one end.
A rotatable shaft 86 is mounted on two bearings 84 fitted on a bracket 89, and a motor 93 is fixedly mounted on the bracket 89 around a coupling 91.
A coupling 97 is attached to the other end of the shaft 86, and a potentiometer 99 is mounted on the coupling 97 to convert the rotation angle of the blade shaft into an electric signal.
, And the bracket 95 is fixed to the other end of the bracket 89.

With the above configuration, when the shaft 86 is rotated, the screw shaft 75 is rotated, and the rotation of the sliding shaft 73 screwed to one end of the screw shaft 75 is regulated by the sliding key 76 as a guide. Slid in the direction. The sliding of the sliding shaft 73 causes the integrated helical gear 71 to move laterally, and the helical gear 67 to slide along the torsion direction of the tooth surface of the helical gear 71, thereby rotating the adjusting shaft 65. Shit cam 61
Rotates. The rotation of the cam 61 causes the cam follower 5 to move.
2 is pressed against the cam 61 by a screw shaft 55, a spring 57, and a bearing 59. The lever 53 swings following a change in the radius of the cam 61, and rotates the blade shaft 49 to move the blade 51 between the blades 51. , The angle of the blade 51 is changed to the position indicated by the dotted line as shown in FIG. Shaft 86
Is not driven, the above-mentioned spur gears and the helical gear have the same tooth number ratio, so that the impeller 43 rotates integrally with the angle of the blade shaft 49 fixed.

As described above, the printed web W is supplied to the folding machine 1
The signature A is folded by the chopper folding machine 19, and the signature A is conveyed at a high speed and received between the respective blades 51 in the impeller device 43, and then is regularly arranged on the discharge conveyor 17 at regular intervals. It will be discharged side by side.

By changing the angle of each blade 51 and optimally adjusting the gap Z between the blades, it is possible to minimize the runaway of the signature A that has been conveyed, and to reduce the signature discharge accuracy. Improvement can be achieved.

As a result, it is possible to improve the signature discharge accuracy and to speed up signature conveyance.

The present invention is not limited to the above-described embodiment of the present invention, and the same effects as those of the present invention can be obtained by making appropriate changes. Referring to FIG. 12, the screw shaft 101 is screwed at one end of the sliding shaft 73, and is supported by a bearing 82 fitted on a boss 79, to which a driving spur gear 105 is attached. A coupling 91 is attached to one end of the screw shaft 101, and a motor 93 is fixed to the bracket 103 around the coupling 91. Rotable shaft 10
9 denotes two bearings 111 fitted to the bracket 103.
Spur gear 107 which is axially supported and meshes with the drive spur gear 105
I'm wearing Coupling 9 is attached to one end of this shaft 109.
7, a potentiometer 99 is mounted on the coupling 97 to fix the rotation angle of the blade shaft to an electric signal.
13 is fixed to the other end of the bracket 103. By performing such a change, the same effect as the present invention can be obtained.

[0034]

As will be understood from the embodiments of the present invention as described above, according to the first aspect of the present invention, the printed web is folded by a folding machine to be a signature. After being conveyed at a high speed and received by each of the blades in the impeller device, when the paper is discharged on a discharge conveyor in an orderly manner at regular intervals, the angle of each of the blades is changed to optimally adjust the gap Z between the respective blades. The signature A that has been conveyed
Can be minimized, and the accuracy of signature delivery can be improved. Thus, the accuracy of signature delivery can be improved, and the speed of signature conveyance can be increased.

According to the second aspect, if the shaft on which the driving counter gear is mounted is rotated, the angle of the blade can be adjusted during operation, and the same effect as that of the first aspect can be obtained. Speed up.

According to the third aspect, if a handle wheel is mounted as a drive source of the driving bevel gear, the angle of the blade can be adjusted during operation, and the same effect as in the first aspect can be obtained, and further adjustment can be achieved. Speed up.

According to the fourth aspect, if a motor is mounted as a drive source of the driving bevel gear, the same effect as that of the first aspect can be obtained, and the angle of the blade can be further adjusted during operation by remote control. The speed of adjustment can be increased.

According to the fifth aspect, the same effect as that of the first aspect can be obtained by mounting a motor as a driving source of the driving bevel gear and mounting a potentiometer for detecting the position of the blade angle. The angle of the blade can be set by presetting by remote control during the operation, and the speed of adjustment can be further increased.

[Brief description of the drawings]

FIG. 1 is a front view of a blade angle adjusting device for a folding machine impeller of the present invention.

FIG. 2 is a sectional view taken along line BB in FIG.

FIG. 3 is a sectional view taken along line CC in FIG.

FIG. 4 is a sectional view taken along line DD in FIG.

FIG. 5 shows a case where the rotary drive means is a steering wheel car.
It is EE sectional drawing in.

FIG. 6 is a cross-sectional view taken along the line EE in FIG. 1 when the rotation drive unit is a motor.

FIG. 7 is a cross-sectional view taken along the line EE in FIG. 1 when the rotation driving unit is a motor having a potentiometer.

FIG. 8 is a front view showing an example of a folding machine.

FIG. 9 is a front view showing an example of a chopper folding machine.

FIG. 10 is an enlarged view of an FF section in FIG. 9;

FIG. 11 is a front view showing a conventional impeller device.

FIG. 12 is a partial sectional view of FIG. 1 showing another embodiment of FIG. 7;

[Explanation of symbols]

 43 impeller device 45 frame 45a frame 47 drive shaft 47a drive shaft 48 impeller boss 49 blade shaft 51 blade 52 cam follower 53 lever 55 screw shaft 57 spring 59 bearing 61 cam 63 bearing 65 adjustment shaft 67 helical gear 69 spur gear 70 drive Spur gear 71 Helical gear 73 Sliding shaft 75 Screw shaft 76 Sliding key 77 Boss 78 Bearing 79 Boss 80 Bracket 81 Bevel gear 82 Bearing 83 Driving bevel gear 84 Bearing 85 Handle wheel 86 Shaft 87 Bracket 89 Bracket 91 Coupling 93 Motor 95 Bracket 97 Coupling 99 Potentiometer 101 Screw Shaft 103 Bracket 105 Drive Spur Gear 107 Spur Gear 109 Shaft 111 Bearing 113 Bracket

Claims (5)

[Claims] 1. A blade angle adjusting device for a folding machine impeller provided between a folding machine that folds a running web to produce a signature and a paper discharge conveyor that discharges the signature, comprising: An impeller boss attached to a drive shaft pivotally supported between the frames,
A plurality of blade shafts arranged at substantially equal intervals on the circumference of the impeller boss and rotatably supported, a plurality of blades attached to the blade shaft, and rotating the blade shaft. And a rotating means for changing the angle of the blade. 2. A rotating means for changing the blade angle, the lever being mounted on each of the blade shafts and having a cam follower at the tip, and being engaged with the cam follower by a pressing member provided for the lever. A cam, and an adjustment shaft which is coaxially inserted into a hollow portion forming the drive shaft and is rotatably supported independently of the drive shaft to mount the cam.
A helical gear attached to one end of the adjustment shaft to rotate the cam; a spur gear attached to one end of the drive shaft to rotate the folding impeller; and a spur gear engaged with the helical gear to drive the spur gear. A helical gear having the same number of teeth as the spur gear train integrated with the spur gear to be driven, and a slide for axially positioning the integrated helical gear and the driving spur gear in a rotatable manner. A shaft, a screw shaft screwed to one end of the sliding shaft, a bevel gear attached to the other end of the screw shaft to slide the sliding shaft, a driving bevel gear meshing with the bevel gear, 2. A blade angle adjusting device for a folding machine impeller according to claim 1, further comprising: a rotary driving means for driving a shaft to which the driving bevel gear is attached. 3. The rotary drive means is a handle wheel provided at one end of a shaft to which the drive bevel gear is attached.
A blade angle adjusting device for a folding machine impeller as described in the above. 4. The apparatus according to claim 2, wherein said rotation drive means is a motor provided at one end of a shaft to which said drive bevel gear is attached. 5. A rotary drive means comprising: a motor provided at one end of a shaft on which the drive counter gear is attached; and a potentiometer provided at the other end for converting the rotation angle of a blade shaft into an electric signal. 3. A blade angle adjusting device for a folding machine impeller according to claim 2.