JPH075091Y2 - Plow folding device for printing machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a plow folding device which is provided in a folding machine of a web rotary printing press and folds the end of a running web to feed it to a former folding device or the like.

[Conventional technology]

In a web-fed rotary printing press, the dried and cooled web is sent to a folder and subjected to various folds such as a forma fold and discharged, or sent to a theta and cut and discharged. . In such a web rotary printing press, a folding device called a plow folding device may be provided in a paper input portion of the folding machine.

FIG. 6 is a schematic plan view of a conventional plow folding device. This plow folding device 1 includes a guide roller 3 on the inlet side for contacting a traveling web 2 and a downstream side of the guide roller 3 traveling on the web 2. And a guide roller 5 on the outlet side for contacting the web 2 folded by the plow unit 4. The plow unit 4 includes a plurality of rollers 6 to 11 arranged in the axial direction and a plow 12 adjacent to the outside of the roller 6.
, And these are divided into two in the axial direction between the roller 8 and the roller 9, and each divided roller group is
It is supported by holders 13 and 14, respectively. Holder 13,14
Is fitted to guide shafts 16 and 17 which also serve as moving shafts which are supported in parallel between the left and right frames 15 which pivotally support the guide rollers 3 and 5, and which are pivotally supported in the axial direction. Guide shaft 16,
Screw shafts 18a and 19a on the side of the motors 18 and 19 are respectively screwed into screw holes provided in the shaft end portion of the shaft 17. Reference numeral 20 is a bolt for fixing the holders 13, 14 to the guide shafts 16, 17. The plow unit 4 is provided obliquely above the guide shaft 17, that is, at a position higher than the guide rollers 3 and 5.

With such a configuration, the web 2 after printing is guided from the lower side of the inlet side guide roller 3 to the plow unit 4 and is abutted on the upper side thereof, and then the lower side of the outlet side guide roller is guided. After that, the web 2 is guided to a former, for example, so that the web 2 is folded at its end portion with a plow 12 and further folded with a former to be folded in three.

When the size of the web 2 or the plow folding position changes, the bolt 20 is loosened and the holders 13 and 14 are moved to the guide shafts 16 and 17.
Move it up to roughly adjust the position of the plow unit 4 in the axial direction, then tighten the bolt 20 and remotely operate the motor 18,19.
When starting, the guide shaft 16,
17 moves in the axial direction, and the position of the plow unit 4 is finely adjusted.

[Problems to be solved by the device]

However, in such a conventional plow folding device, when adjusting the plow unit 4 as described above, one guide shaft 16 (17) of both guide shafts 16 and 17 serves as a moving shaft, and the other guide shaft 16 (17) serves as a moving shaft. Since the shaft 17 (16) serves as a fixed shaft for the guide, even if the holder 14 (13) is moved by moving the guide shaft 16 (17) on the moving side, the weight of the plow unit 4 is not fixed. There is a problem that the holder 14 (13) may not move due to the guide shaft 17 (16) being twisted and twisted.

[Means for Solving the Problems]

In order to solve such a problem, in the present invention, a drive base that supports a drive source is provided on a pair of guide shafts that are located between both guide rollers on the inlet side and the outlet side and are supported in parallel with these guide rollers. , A roller support base for supporting the plow unit is supported at an interval so as to be movable back and forth in the axial direction,
A driving force connecting member for drivingly connecting the drive source and the roller support is provided between the pair of guide shafts.

[Action]

The web guided from the inlet side guide roller to the plow unit shorter than this is plow-folded on one side edge portion by the plow and guided to the outlet side guide roller. When the size of the web is changed or when the plow folding portion is changed, when the drive base with respect to the guide shaft is moved, the roller support base is also moved to roughly adjust the plow unit. Further, when the drive source is rotationally driven, the roller support is moved and the plow unit is finely adjusted.

〔Example〕

1 to 5 show an embodiment of a plow folding device for a printing press according to the present invention. FIG. 1 is a front view thereof, FIG. 2 is a plan view thereof, and FIG. 3 is III- of FIG. III sectional view, FIG. 4 is a sectional view taken along line IV-IV of FIG. 1, and FIG. 5 is a schematic front view of a cooling device of a printing machine embodying the present invention and a folder input section. In the figure, between a folder 21 and a drying device (not shown), a cooling device 24 having a plurality of cooling rollers 23 for cooling the web 22 dried by the drying device after printing is disposed. ing. From the upper end of the frame 25 of the folding machine 21, a paper receiving frame 27 supported by a cooling device 24 by pillars 26 is horizontally projected toward the front, and the lower side of the paper receiving frame 27 and the frame 25. A guide roller group 28, 29 composed of a plurality of rollers is arranged at the upper front portion of the
The web 22 cooled by the cooling device 24 is guided by the guide roller group 2
After 8 and 29, the input frame 27 Guide rollers 30 and 31 at the front end
Have been led to.

A plow folding device, generally designated by the reference numeral 32, is fixed to the upper surface of the paper input frame 27. The plow folding device 32 includes a pair of frames 33 formed in a horizontally long rectangular shape.
Further, an inlet side guide roller 34, a plow unit 35, and an outlet side guide roller 36, which are sequentially arranged from the upstream side of the paper running, are provided between the both frames 33. The inlet side guide roller 34 is provided with a rotatable fixed roller 37 and a tension roller 39 supported by a pair of swingable arms 38 having the fixed roller 37 as a swing center. The web 22 from the roller 31 is introduced into the plow unit 35 (described in detail later) after being attached to the fixed roller 37 and the tension roller 39 in an S shape to give a tension. On the other hand, the outlet side guide roller 36 is a fixed roller 40 which is rotatably supported.
And a tension roller 42 supported by a pair of swingable arms 41 with the fixed roller 40 as the swing center. The web 22 from the plow unit 35 is moved to both rollers 40, 42 by S. Tension is given by being attached in a letter shape.

The plow unit 35 is provided with a horizontal frame 43 formed in a U-shaped cross section and connecting the left and right frames 33. Above the horizontal frame 43, there are two rows in the front and rear, which are divided into two in the left and right direction at the center. The guide shafts 44 are connected and supported by the left and right frames 33 and the brackets 45 fixed to the horizontal frame 43. Then, the front and rear guide shafts 44 are divided.
Is a rectangular parallelepiped box-shaped motor base that opens downward.
46 and a roller support base 47 formed in a rectangular shape are fitted to each other so as to be movable back and forth in the axial direction with a space therebetween, and the motor base 46 and the roller support base 47 are connected by a screw shaft 48. ing. That is, one end of the screw shaft 48 is rotatably supported by the shaft hole of the motor base 46 and its movement in the axial direction is restricted by the collar 49, and the screw shaft 48 has a screw formed at the other end. The portion 48a is screwed into a screw hole of the roller support base 47 so as to be able to rotate and move back and forth. Reference numeral 50 denotes a motor supported by each motor base 46 via a support frame 51, and its motor shaft 52 has
A gear shaft 53 is connected via a coupling 54, and a bevel gear 56 that meshes with the bevel gear 55 on the screw shaft 48 is attached to the gear shaft 53. As a result, when the motor shaft 52 rotates, the gear shaft 53 rotates and the bevel gear 5
The screw shaft 48 is rotated via 6, 55, and the rotation and the screw action of the screw portion 48a adjust the forward and backward movement of the roller support base 47. Reference numeral 57 is a clamp screwed to a screw portion of a brake shoe 58 that is in contact with the guide shaft 44. By tightening the clamp to bring the brake shoe 58 into pressure contact with the guide shaft 44, the motor base 46 is fixed and the forward / backward movement is performed. In addition, the motor base 46 and the roller support base 47 can be integrally advanced and retracted by loosening the clamp 57.

A bracket 59 having a vertical bearing 59a is fixed to the roller support base 47 by a bolt 60, and roller bearings 61 and 62 have height adjustment mechanisms described later on the bearing 59a of each bracket 59.
The vertical movement is regulated by 63 and the rotation is regulated by a rack 64, and they are fitted together. The bearings 65 and 66 fixed to the upper ends of the left and right roller support shafts 61 and 62 respectively include a roller group 80A including four rollers 67 to 70, for example.
And a roller group 80B including, for example, six rollers 71 to 76 are axially divided and are rotatably supported via fixed shafts 77 and 78, respectively. And one roller group 80A
The fixed shaft 77 has a plow 81 fixed to the shaft end, which is formed in a triangular arc shape in cross section having the same diameter as the roller groups 80A and 80B.
One end edge of the web 22 running while being attached to the roller groups 80A and 81B is plow-folded. The vertical movement adjusting mechanism 63 includes an operating shaft 82 rotatably supported in a hole of a bearing 59a, a knob 83 and a worm 84 fixed to the operating shaft 82, and a bearing 59a orthogonal to the operating shaft 82. A pinion shaft 85 pivotally supported on the pinion shaft 85, a worm wheel 86 fixed on the pinion shaft 85 and engaged with the worm 84, and a pinion fixed on the pinion shaft 85 and engaged with the rack 64.
87, and is configured such that the roller groups 80A, 80B and the plow 81 are vertically adjusted via the pinion shaft 85 by gripping the knob 83 and rotating the operation shaft 82. There is.

From the lower end surface of each of the left and right roller support bases 47, a switch base 88, which is formed in a rectangular shape in plan view and has downward standing edges at both left and right ends, is horizontally arranged below the screw shaft 48 and in parallel therewith. On the switch base 88, a pair of left and right limit switches 89 and 90 electrically connected to the left and right motors 50 are fixed. Further, from each of the left and right motor bases 46, a striker 91 formed in a U-shape in a plan view is provided so as to horizontally project with a connecting member 91a at its tip positioned between both limit switches 89 and 90. By moving the motor base 46 and the roller support base 47 relative to each other, the connecting member 91a of the striker 91 and the limit switch 8
It is configured so that 9,90 and 9 move relative to each other. Then, when the motor 50 provided on the motor base 46 in the fixed state is started to move the roller support base 47, the limit switch 89 or the limit switch is provided at both ends of the movement.
The connecting member 91a of the striker 91 abuts on one of the 90 to close its contact, thereby rotating the motor 50, that is, the screw shaft 48.
Is stopped to stop the movement of the roller support base 47 at both ends. Further, the switch base 88 and the striker 91 are provided with scale plates 92, 93 on the horizontal frame 43 side.
And pointers 94 and 95 respectively corresponding thereto are attached, and are configured to indicate the positions of the motor 50 and the plow 81. Each of the left and right motors 50 is electrically connected to an operation panel (not shown) .The operation panel has push buttons for separately rotating the left and right motors 50 in the forward and reverse directions, and forward and reverse operations by simultaneously operating the motors 50 on both sides. A push button for rotating is provided.

On the downstream side in the running direction of the web 22 of the plow folding device 32 thus configured, the drag rollers 96, 97 and the guide rollers 98,
99 is provided, the web 22 after plow folding is drawn out by the drag rollers 96, 97 and guided by the guide rollers 98, 99 to be fed to the inverted triangular former 100, and half-folded in the width direction. Is configured to. Further, a theta (not shown) is disposed on the downstream side of the guide roller 98 via the guide roller 101, and the web 22 which is not folded according to the specifications of the printed matter is fed to the theta and cut into a predetermined length. It is configured to be.

The operation of the plow folding device configured as described above will be described by taking the tri-folding of the web as an example. Prior to the paper threading work in which the web 22 is passed through the folding machine 21, the approximate position of the plow unit 35 is manually adjusted according to the size of the web 22 and the plow folding position. That is, when the clamp 57 is loosened and the pressure contact of the guide shaft 44 by the brake shoe 58 is released, the motor base 46 becomes movable with respect to the guide shaft 44. Therefore, when the motor base 46 is moved along the guide shaft 44, The roller support 47, which is integrally connected to the motor base 46 by the screw shaft 48, also moves, and the entire plow folding device 32 moves. in this case,
The plow folding device 32 is moved and adjusted separately for the right side and the left side, and the movement is performed by the pointers 94, 95 and scale plates 92, 93.
It will be done while watching the sign.

After the rough adjustment of the plow folding device 32 is performed in this manner, the web 22 is passed through the entire folding device 21 and the plow folding device 32 is precisely aligned. That is, when the clamp 57 is tightened to bring the brake shoe 58 into pressure contact with the guide shaft 44, the motor base 46 is fixed to the guide shaft 44, so when the push button is pressed, the left and right motors 50 rotate simultaneously and the bevel gear 55, 56
The screw shaft 48 is rotated through the screw shaft 48, and the left and right roller groups 80A and 80B screwed into the screw shaft 48 are simultaneously moved to the left or right by the same amount. Therefore, the gap between the rollers 70 and 71 is maintained at a predetermined gap during the rough adjustment. When the roller support 47 is moved, it is supported by the left and right guide shafts 44 and is moved by the central screw shaft 48.
The movement will be smooth without being twisted.

When the printing operation is performed in this state, after printing, the web 22 dried by the drying device is cooled while running while being in contact with the cooling roller 23 of the cooling device 24, and the guide roller groups 28, 29 and the guide rollers 30, It is guided to the plow folding device 32 via 31. The web 22 is applied with tension by being attached to the inlet side guide roller 34 in an S-shape, and goes to the outlet side guide roller 36 via the plow unit 35. At this time, the plow unit 35
The web 22 passing through runs alongside the rollers 67 to 76, and one end runs through the plow 81, so that the end of the web 22 is plow-folded. The web 22 that is plow-folded while being tensioned by the outlet side roller 36 is drawn out by the drag rollers 96 and 97, is guided by the guide rollers 98 and 99, is fed to the former 100, and is half-folded in the width direction. . As a result, the web 22 is folded in three by plow folding and former folding.

In addition, although the plow folding device for performing three-fold is illustrated in the present embodiment, two-fold can be performed if the former folding is not performed by this device. In addition, one plow 81 may be provided outside the roller groups 80A and 80B on both sides.

[Effect of device]

As is apparent from the above description, according to the present invention, in the plow folding device of the printing machine, the drive is performed on a pair of guide shafts that are located between both guide rollers on the inlet side and the outlet side and are supported in parallel with these. A drive base supporting the power source and a roller support base supporting the plow unit with a space therebetween so as to be movable back and forth in the axial direction, and the drive source and the roller support base are provided between the pair of guide shafts. By providing the driving force connecting member for driving and connecting, when the drive base is moved with respect to the guide shaft, the roller support base is also moved and the plow unit is moved. When the drive source is rotationally driven, the roller support base is moved. Roughly and finely adjusting the position of the plow unit when changing the paper size and plow folding position, the operability is improved and the motor support and plow unit are improved. Functions very smoothly move device without the capital of the support base is gets worse is improved.

[Brief description of drawings]

1 to 5 show an embodiment of a plow folding device for a printing press according to the present invention. FIG. 1 is a front view thereof, FIG. 2 is a plan view thereof, and FIG. 3 is III- of FIG. III sectional view, FIG. 4 is a sectional view taken along line IV-IV of FIG. 1, FIG. 5 is a schematic front view of a cooling device of a printing machine and a folder input section of the present invention, and FIG. It is a schematic plan view of a plow folding device. 21 …… folding machine, 22 …… web, 32 …… plow folding device, 34
...... Inlet side guide roller, 35 ...... Plow unit, 36 ...
… Outlet side guide roller, 46 …… Motor base, 47 …… Roller support base, 48 …… Screw shaft, 48a …… Screw part, 50 …… Motor, 52 …… Motor shaft, 53 …… Gear shaft, 55, 56 …… Bevel gear, 57 …… Clamp.

Claims (1)

[Scope of utility model registration request] 1. A plow folding device of a printing machine, wherein a running web after printing is guided from a guide roller on an inlet side to a plow unit for plow-folding and is guided to a guide roller on an outlet side. A pair of guide shafts supported in parallel with these, a roller support base for supporting the plow unit which is supported so as to be capable of advancing and retracting in the axial direction by fitting shaft holes into these guide shafts, and an interval between the roller support bases. And a drive base that is supported on the pair of guide shafts so as to be movable back and forth in the axial direction to support a drive source, and one end that is located between the pair of guide shafts and is drivingly connected to the drive source and the other end. A plow folding device for a printing press, comprising: a driving force transmission member connected to the roller support.