JPS60197567A - Chopper device for folding machine - Google Patents

Abstract

PURPOSE:To reduce scrapped paper and improve productivity by providing a folding guide in annular grooves arranged opposed to each other around the peripheral surface of a pair of pinch rollers and arranging futher below said guide a pair of parallel rollers having annular grooves with different axial phases. CONSTITUTION:Since pinch rollers 18, 19 rotate in the directions opposite to each other with the peripheral surfaces contacting each other, an inserted folded leaf is withdrawn downward by the pinch rollers 18, 19 and guided to folding guides 59, 60 on annular grooves 18a, 19a to be withdrawn right below. The folded leaf is further below withdrawn by pinching rollers 20, 21, while being given the folding line. Here, leaf folding guides 63, 64 engage annular grooves 20a, 21a on the pinch rollers 20, 21 to be doubled with the upper leaf folding guides 59, 60 with respect to the upper and lower phases so that the leaf is guided by said guides 63, 64 to be withdrawn right below. Thus, the folded leaf does not have any possibilities of being wound around the upper and lower pinch rollers 18-21 and producing unfolded one so that an amount of damaged paper is reduced and the removal of wound folded leaf is not needed to improve productivity.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a chopper device for folding a signature folded in an origami section in a direction perpendicular to the girder direction in a folding machine of a web rotary printing press.

[Prior art]

Generally, a web rotary printing press is equipped with a folding machine that cuts or folds a dried and cooled web into predetermined dimensions after printing.

This folding machine includes a former that folds the web in half in the width direction,
Three types of folding devices are installed in the web conveyance path in the web conveyance path, including an origami side group that folds in half in the longitudinal direction, and a chopper device that folds the cylinder-folded signatures in the origami side group further in half in the perpendicular direction. One of these may be selected according to the specifications of the signature, and two or more may be combined.

Of these three types of folding devices, the chopper device is conventionally constructed as shown in FIG. 1, a longitudinal sectional view of which is shown.

In the figure, reference numerals 1 and 2 indicate a plurality of paper ejection belt legs that sandwich the plate 3 from above and below and run from the bottle back side to the front side in the figure, and the paper spine is attached to the center of the plate 3 from the front side in the figure. A pair of caps 4 are attached to the rectangular window extending to the side. A chopper blade stand 6, which swings at a predetermined timing as shown by the solid line and chain line in the figure, is fixed to the chopper shaft 5, which is pivotally supported by the frame, at a predetermined timing as the chopper shaft 5 rotates back and forth. A thin plate-shaped chopper blade 7 that moves forward and backward into the mouthpiece 4 by swinging is fixed to the. Below the cap 4, a pair of upper and lower gripping rollers 8 and 9, which rotate in the directions shown by the arrows in the figure, are mounted on shafts.
Below that, an unillustrated impeller is mounted on a shaft.

In the conventional chopper device configured as described above,
The folded sheets parallelly folded on the origami side group are
, 2 and is conveyed, and stops when it comes into contact with a paper stopper (not shown) provided on the front side of the figure. Then, the chopper blade 7 descends and pushes the center part of the stopped signature into the gap in the mouthpiece 4, so that the signature is folded in half while being caught by the upper gripping roller 8, pushed downward, and further rotated. It is caught by the lower gripping roller 9, held in the grip so as to form a crease, and then pulled out downward.

Since there is an impeller rotating at the bottom, the pulled out signatures are thrown between the blades provided on the outer periphery of the impeller, and are transported by the rotation of the impeller. Thereafter, the sheets are discharged onto a paper discharge conveyor and transported and accumulated.

However, in such a conventional chopper device, as the speed of the machine increases, the upper and lower gripping rows 28, 9
rotates at high speed, so that the signatures pushed out from the upper gripping roller 8 do not go to the lower gripping roller 9, but instead land on the upper gripping roller 28 and wind around it. In order to avoid the possibility that the signatures to be fed to the lower gripping roller 9 may become wrapped around the lower gripping roller 9, it is necessary to remove the wrapped signatures from the machine. had to be stopped, which had the disadvantage of reducing productivity.

[Summary of the invention]

The present invention has been made in view of the above points, and includes a pair of grippers whose surfaces face each other so as to grip a signature that is folded in half and pushed down by the lowering of the chopper blade. By providing annular grooves facing each other on the circumferential surface of the roller and providing a signature guide facing into these annular grooves, the occurrence of signatures is prevented, thereby reducing paper waste and improving productivity. At the same time, a pair of gripping rollers are provided below this gripping roller in parallel with the grip, and annular grooves facing each other are provided on the surfaces of the gripping rollers at different phases in the axial direction from the upper annular groove.
By providing a signature guide in this annular groove, the present invention provides a chopper device for a folding machine that prevents signatures from wrapping around and leaving behind signatures, thereby reducing paper waste and improving productivity. be. Embodiments of the present invention will be described in detail below with reference to the drawings.

〔Example〕

2 to 4 show an embodiment of the chopper device according to the present invention, FIG. 2 is a longitudinal sectional view of the chopper device of a folding machine in which this is implemented, and a sheet discharge device below the chopper device, and FIG. FIG. 4 is a developed cross-sectional view of the chopper device, and a developed plan view of the main parts of the chopper device. In the figure, the horizontal member tta of the chopper frame 11 that is continuous with the folding machine frame is connected by a beam 12, and on this beam 12 there are 13 m of front and rear side plates.
+13b and four stays 13c and t that connect these
sd+13.

The sub-frame 13 integrally formed with the sub-frame 13f is supported so as to be movable in the left-right direction in FIG. 2 via rollers (not shown). Reference numeral 14 denotes a handle which is pivotally supported by the horizontal member 11 & of the chopper frame 11 with its movement in the axial direction being restricted, and a nut 15 screwed into the threaded end portion 14m.
It is fixed to the stay 13f, and by rotating the handle 14, the sub-frame 13 and the entire device supported by this move to correspond to the signature size. .

The chopper frame 13 supports a chopper device generally designated by the reference numeral 16, including a paper discharge bell)1.
2. The plate 3, mouthpiece 4, chopper shaft 5, chopper blade stand 6, and chopper blade 7 have the same configuration as the conventional one explained in FIG. do. There are four holes between the driving side side plate 13b of the subframe 13 and the outframe (not shown).
Two drive shafts 16 are rotatably supported, and a drive gear 1T, which is drivingly connected to the driving side, is fixed to this. Code 18.
Reference numeral 19 indicates a pair of lower gripping rollers disposed close to the mouthpiece 4, and reference numeral 20.21 indicates a pair of lower gripping rollers located below the lower gripping rollers 218.19. A pair of lower gripping rollers arranged, of which a lower gripping row 218 is arranged at a diagonal position;
The lower gripping roller 21 is the left and right frame side plates 13a.
.

13b via a ball bearing.

A gear 23 , which is drivingly connected to the driving gear 17 via an intermediate gear 22 , is attached to the shaft end of the lower gripping roller 18 .
is driven from the drive gear 17 side and rotates in the direction shown by arrow A in the figure. Gear shaft 2 fixed to one side plate 13b
4 is loosely equipped with another drive gear 25 that meshes with the drive gear 17, and this drive gear 25 and a gear 26 on the lower gripping roller 21 are drivingly connected via an intermediate gear 2γ. By doing this, the lower gripping roller 21
is driven from the drive gear 11 side and rotates in the direction shown by arrow B in the figure. Furthermore, the other lower part of the lower jaw 21
9 is pivotally supported by the free end of a roller arm 28 which is loosely attached to both shaft ends of the lower gripping row 221, and the peripheral surface of the lower gripping row 218 is supported by a spring member (not shown). It is biased in the direction of bringing it into pressure contact. and side plate 13b
An intermediate gear 30 that meshes with the driving gear 25 is rotatably supported via a pin 31 on the bracket 29 fixed to the bracket 29 .The intermediate gear 30 is fixed to the shaft end of the lower gripping roller 19 . It meshes with the gear 32 that has been rotated. By doing this, the lower gripping row 219 is also driven by the drive gear 1T and rotates in the direction shown by arrow C in the figure. Further, a roller arm 34 is rotatably supported on the gear shaft 24 on which the drive gear 25 is loosely mounted and a corresponding stud 33 fixed to the other side plate tSa. The lower gripping roller 2° is pivotally supported by the free end of the roller arm 34, and is biased by a spring member (not shown) in the direction of bringing its multiple peripheral surface into pressure contact with the peripheral surface of the lower gripping row 2210. .

The lower gripping roller 20 is also driven from the drive gear 1T side in the direction shown by the arrow in the figure because the gear 35 fixed to the end of its shaft is engaged with the drive gear 25. It is rotating.

Upper and lower gripping rows 218 to 2 configured as above
1, an impeller shaft 40 which rotates in the direction shown by the arrow E in the figure is pivotally supported by the side plates 13 & 13b. The impellers are arranged in parallel in the axial direction. Each impeller 41 is formed in the shape of a polygonal cylinder with a bottom and has an impeller base 42 whose boss portion is fixed to the impeller shaft 40. Each impeller 41 has a rectangular thin plate on each plane of the outer periphery of the polygon. A blade 43 formed in a circular arc shape is fixed to a block 44 integral with the blade 43 by bolting from the inside of the blade platform 42.

Reference numeral 45 includes front and rear belt rollers 4s and a plurality of belts 47 stretched between them, and a paper ejection comparer for conveying the signatures ejected from an impeller 40. Also, 48 is an impeller 40. A backing plate that abuts the girder ends of the signatures to be conveyed so as to be discharged onto the paper discharge conveyor 45,
It is supported via a vertical stay 50 and an arm 51 by a pair of horizontal stays 49 extending horizontally from the stay 13d.

With this configuration, the lower part of the p-218 is folded in half by the lowering of the chopper blade T,
The signature pushed between 1 and 9 is held by the upper and lower gripping rollers 1.
8 to 21, the paper is pulled out between the adjacent blades 43 of the impeller 41, and is conveyed by the impeller 41 and discharged onto the paper discharge conveyor 45. is equipped with various guide devices for guiding the signatures. First, the guide device provided in the gripping portion of the gripping rollers 18 to 21 will be explained. Support plates 52 extending vertically are fixed to the side plates 13at13b on both sides of the subframe 130, and are located between the gripping rows 218 to 21 and the chopper shaft 5, respectively. The tip of the arm 53 fixed to is connected by a square stay 54. Brackets 55 formed in a T-shape in plan view are fixed to two locations that divide the corner stay 54 into three equal parts #1 in the length direction, and on the other hand, a bracket 55 is fixed to the tip of the horizontal stay 49. A vertical bracket 56 is integrally formed with the bracket 55 in the same phase in the machine width direction. Further, annular grooves 18B and 19& are provided on the circumferential surfaces of the upper gripping rollers 1B and 19 in the same phase in the axial direction. 57.58 is the annular groove 18
m and 19a, respectively, extending horizontally. At the tip of each guide stay 57, 58, a signature guide 59, 60 formed in a strip shape has an annular groove 18B at the upper end.
, 1st and vertically facing each other and are configured to guide the signature pushed between the upper gripping rows 21B and 19 downward. Furthermore, an annular groove 20a is formed on the circumferential surface of the lower cutting rollers 20 and 21.

211L are in phase with each other in the axial direction and the upper annular groove 18
& , 19a are provided out of phase with each other in the axial direction, and guide stays 61, 62 fixed to one side of the brackets 55, 56 are connected to annular grooves 20, 21.
They each extend horizontally toward m. At the tip of each guide stay 61, 62, a signature guide 63 formed in a rectangular shape and a signature guide 64 in a rectangular shape extending in an arc between the blades 43 are engaged in the annular groove zoa, 211. In addition, the upper signature guides 59 and 60 are vertically opposed and fixed in a vertically overlapping phase.
60 and is configured to guide the signature to the impeller 41.

Next, a guide device for the signatures conveyed and discharged by the impeller 41 will be explained. From the beams 12 on both sides, a pair of horizontal guides 65 formed in a rectangular plate shape are protruded from both sides of the outer impeller 41 and are opposed to each other. It is configured to guide both side edges of the blade.

Further, reference numeral 66 denotes a fixed guide formed in a circular arc shape along the circumferential locus of the tip of the multi-blade 43 in a plate material,
It is supported by a bracket 68 that is split and fixed to a stay 67 that connects the lower ends of the sheets 2 and 2, and is configured so that the protruding ends of the signatures conveyed by the impeller 41 are brought into sliding contact and guided. Furthermore, an adjustment bearing 74 formed into a frame shape in plan view is fixed to the support member 69 fixed to the lower surface of the stay 13f. A bracket 75 formed in an inverted shape is screwed onto the inside of the connecting bar 72.73 of the adjustment bearing T4 with the rear end, with #l inclined at 45 degrees. A pair of guide shafts 77 integrally connected by a bar 76 are slidably supported in parallel in the shaft hole of the bracket T5, and a blade 43 is mounted at the tip of each guide shaft 77. Arc-shaped guides 78 each formed in an arc shape along the circumferential locus of the tip are fixed. The threaded portion of the adjustment shaft 79, which is located between both guide shafts 77 and is pivotally supported by the bracket 75 and whose movement in the axial direction is restricted, is screwed into the threaded hole of the bar 76. By rotating 79, the arcuate guide 18 is moved in a direction toward and away from the impeller 41 to correspond to the size of the signature. Also, a bar 8 is slidably supported in the shaft hole of the vertical plate 70°11.
At the tips of the pair of guide shafts 81 and 82 that are integrated at
is fixed by inserting an arcuate guide 18 into the valley. Between the guide shafts 81 and 82, an adjustment shaft 84 whose threaded portion is screwed into a threaded hole in the bar 80 is pivotally supported by a vertical plate 70, 71 with movement in the axial direction restricted. By operating the adjustment shaft 84 once, the vertical guide 83 is moved in a direction toward and away from the impeller 41 to correspond to the size of the signature.

The operation of the chopper device and paper ejecting device configured as above will be explained. The second sheet is held between the upper and lower paper ejection belts 1 and 2.
The signatures are conveyed from the paper spine side to the front side as shown in the figure.
It stops when its front end comes into contact with a paper stop (not shown) provided in the conveyance path, and only the paper discharge belts 1 and 2 continue to run, leaving the signatures behind. At the same time as the signature stops, the chopper blade stand 6 rotates from the chain line position to the solid line position, and the chopper blade 7 pushes the center fold line part of the signature into the gap in the mouthpiece 4. There are gripping rollers 18, 19 which are circumferentially opposed and rotating in opposite directions, so that the pressed signature is pulled out downwards by the gripping rollers 18, 19. At this time, the annular groove 18 of the gripping roller 18, 19
& , 19m is provided with a signature guide 59.60, so the signature pulled out downward by the gripping rows 218, 19 is guided by this signature guide 59.60 and goes directly below. drawn out. Furthermore, the gripping roller 18
Below ゜19, the lower gripping rollers 2G and 21 rotate in opposite directions with their peripheral surfaces facing each other, so that the signatures pulled out by the gripping rollers 218 and 19 are held in the gripping rollers 218 and 21. It is pulled out further downward by the inserting rows 220 and 21, and a crease is created. At this time, the annular grooves 20&, 21& of the gripping rollers 20, 21 are provided with signature guides 63, 64.
are engaged and overlap the upper and lower phases with the upper signature guides 59 and 60, so that the gripping rollers 20 and 2
The signatures pulled out in step 1 are guided by signature guides 63 and 64 and pulled out directly below. Therefore, there is no possibility that the folded sheets will be wrapped around the upper and lower gripping rollers 18, 19, 20, 21, and no folded sheets will be left behind. The signatures pulled out in this way are guided by the circular arc portion of the signature guide 64 and the fixed guide 66, are thrown between the blades 43, and are conveyed circularly by the rotation of the blade wheel 410. At this time, the signature rotates while being guided with its side edge slidingly in contact with the horizontal guide 65 and its protruding end from the blade 43 slidingly contacting the arcuate guide T8.

Then, when the impeller 41 rotates further and the folded edge of the signature comes into contact with the backing plate 48, only the impeller 41 continues to rotate and the signature is left behind, so that the signature is not held by the blade 43. The paper is released and discharged onto the paper discharge conveyor 45. At the end of conveyance and when the signatures are discharged, the protruding ends of the blades 43 are brought into sliding contact with the linear guides 83 and guided while being conveyed and discharged, so that the signatures are discharged in correct alignment.

Then, if the signature size is changed, the handle 14
When the sub-frame 13 and the chopper device and paper ejecting device integrated therewith move in the parallel direction of the paper ejection belts 1 and 2, leaving the paper ejection belt 1.2 behind, the position of the fold line is adjusted. Further, when the adjustment shafts 79, 84 are rotated, the arcuate guide 78 and the vertical guide 83 move, so that it is possible to correspond to the signature size. In this case, both guides 78, 83 are moved separately, so that an adjustment is made that is correctly adapted to the signature size.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in a chopper device of a folding machine, the peripheral surface of a pair of gripping rollers that grips a signature that is folded in half and pushed down by a chopper blade. By providing the annular grooves facing each other and providing the signature guide facing into the annular grooves, the signature is guided by the signature guide and pulled out directly below when being held in the mouth. There is no wrapping around the gripping roller, which reduces the amount of waste paper generated, and improves productivity by eliminating the need to remove wrapped signatures. Further, a pair of gripping rollers are provided below the gripping roller in parallel with the gripping roller, and annular grooves facing each other are provided on the surfaces of the gripping rollers with a phase different from that of the upper annular groove in the axial direction. By providing the signature guide so as to face inside, the signatures are guided correctly, further reducing the amount of wasted paper, and the signatures are reliably pulled out, completely preventing signatures from being left behind. I can do it.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of a chopper device of a conventional folding machine.
82 to 4 show an embodiment of the chopper device of a folding machine according to the present invention, and FIG. The figure is a developed cross-sectional view of the chopper device, and FIG. 4 is a developed plan view of the main parts of the chopper device. 16... Chopper device, 18.19, 20.21.
...Suck roller, 18m, 19m, 20m
, 21a... annular groove, 59.60, 63.64...
...Signature guide. Patent applicant Komori Printing Machinery Co., Ltd. Agent Masaki Yamakawa (and 2 others)

Claims (2)

[Claims] (1) Concessional grooves with the same phase are provided in the axial direction of the rollers on the curved surfaces of a pair of gripping rollers with their curved surfaces facing each other, and the flat surfaces face each other facing the inside of the roller facing side of each annular groove. A chopper device of a folding machine characterized by being provided with a signature guide. (2) Annular grooves with the same phase are provided in the axial direction of the rollers on the circumferential surfaces of a pair of gripping rollers whose circumferential surfaces are in contact with each other, and the planes face each other facing the inside of the roller-contacting side of each annular groove. At the same time, a pair of lower gripping rollers are provided below the gripping roller and parallel to the gripping roller. A chopper device for a folding machine, characterized in that annular grooves having different phases are provided, and a folding guide is provided with planes facing each other facing inside the roller facing side of each annular groove.