JPS63147763A - Folding machine for rotary press - Google Patents

Abstract

PURPOSE:To distribute signatures by leaving a space between the preceding page and next page signatures by means of a timing roll having a little faster peripheral speed than a bank-bill speed and wedging alternately a pair of right and left separation-plates of a separator into this space. CONSTITUTION:A space is left between the trailing edge 65a of the preceding page signature 65 and the leading edge 64a of the next page signature 64 of the signatures sent between guide-belts 31, 32 by means of a timing driven at a little faster peripheral speed than a bank-bill-transfer-speed. Alternate wedging is done through the separation claws 41a, 41b or 42a, 42b of the separation plates 41, 42 of a separator 40 revolving respectively right or left into this space. By this, signatures being sent between guide belts 31, 32 are distributed alternately right and left by means of separation plates 41, 42 and are carried in an A direction or B direction. Accordingly, a gripper is not used, so a structure becomes simple, and a high speed can be achieved.

Description

Detailed Description of the Invention [Industrial Field of Application] This invention is aimed at dividing the outer periphery of a plate cylinder of a rotary printing press into two equal parts.
The present invention relates to a folding machine of a rotary printing press that separates and discharges pages A and 8 when the number is 8 pages.

[Prior Art] The conventional technology will be explained based on FIG. 5. A paper strip printed by a rotary printing press (not shown) is vertically folded at its center by a triangular plate former 1 to become a paper strip 20, and cut horizontally by a cutting cylinder 2 to become a signature. Divide the circumference of the torso into two equal parts and make page A.

In the case of 8 pages, since each page is cut, the cutting cylinder 2 cuts the paper strip 2o twice for each rotation of the plate cylinder to form a signature for each page. The signature 23 cut by the cutting cylinder 2 is sandwiched between the guide belt devices 5.6, pulled by the timing roll 3, and transferred to the copper mold 21, where the leading edge 23a of the signature 23 is held in the jaw device 22. Then, it is transferred to the separation claw side 27.28 adjacent to the mold copper 21, and is again held in the gripping claw device 29.30 on the separation claw side 27.2g, and the guide belt device 7.8
and each impeller 16.17 sandwiched between 9 and 10
The sheets are transferred to the respective paper ejection tables 18 and 19, and are ejected after being arranged in pages A and 8 pages at a time.

[Problems to be Solved by the Invention] In such a conventional technique, as a means for separating page A and page 8, the leading edge 23g of the signature 23 is used as a means for separating page A and page 8 using the gripping claw device 22 of the shaped copper 21, which is troublesome to maintain. is held in its mouth, and then replaced with a gripping claw device 29.30 with a separation claw side of 27. Because it can be used to hold paper, it was necessary to make the signature longer to accommodate the gripping, resulting in wasted paper strips. Furthermore, there is a drawback that increasing the printing speed is limited to the limit speed of the gripping claw, and there has been a desire to improve this problem.

The present invention eliminates these drawbacks, and aims to provide a folding machine for a rotary printing press that has a simple structure, is low cost, easy to maintain, and can achieve high speed. .

[Means and effects for solving the problem] In this invention, the trailing edge of the signature of the previous page and the next page are separated by a timing roll that is transported by a rotary printing press and driven at a peripheral speed slightly higher than the speed of the filter paper strip. A gap is left between the leading edges of the signatures, and a pair of left and right separation plates of the separator are inserted alternately into this gap to separate the signatures into pages A and A.
Every 8 pages are sorted left and right, and the sorted signatures are sandwiched between a pair of left and right guide belt devices and a small-diameter guide roller device and transported downward, and then transferred to the left and right impellers, respectively, and discharged onto a paper discharge table. It is configured as follows.

[Example] Hereinafter, an example of a folding machine for a rotary printing press according to the present invention will be described based on the drawings. FIG. 1 is a diagram showing the overall configuration.

A paper strip printed by a rotary printing press (not shown) is folded vertically at the center of the width of the paper strip using a triangular plate former 1 to form a paper strip 20, and is cut page by page using a horizontal cutting cylinder 2 to form signatures. Become. The signature is inserted into an entry nip formed by a pair of narrow guide belts 31,32. Since the guide belt 31 is driven clockwise and the guide belt 32 is driven counterclockwise, the signatures are conveyed downward while being held by the belts 31 and 32. A pair of timing rolls 33 are driven at a circumferential speed slightly faster than the moving speed of the paper strip 20.
Since the signatures are sandwiched and fed, a gap is created between the trailing edge of the signature on the previous page and the leading edge of the signature on the next page. The guide belts 31 and 32 are made up of a plurality of narrow belts arranged in parallel, and the exit sides of the guide belts 31 and 32 are fitted with ball bearings on plate-shaped brackets 36 and 37, as shown in FIG. A nip is formed on the downstream side by a pair of disc-shaped guide rollers 34 and 35 that are rotatably supported via the guide rollers 34 and 35, and left and right small diameter guide rollers 52 and 53 of a small diameter guide roller device 50, which will be described later. be done. A separator 40 is provided in this nip portion.

The separator 40 mainly consists of separating plates 41, 42. The left separation plate 41 is an S-shaped member having separation claws 41a and 41b of approximately 1/8 of the disk-shaped outer diameter, and the right separation plate 42 is similarly formed with separation claws 41a and 41b of approximately 1/8 of the disk-shaped outer diameter. An inverted S-shaped member having separation claws 42a and 42b of /8,
Fitted into the respective drive shafts 43, 42, the separation claws 41a,
41b, 42a, 42b are arranged so as to intersect at the center of the nip, and the separation claws 41 and 42 have a phase of 18
They are installed with a 0 degree difference. As shown in detail in FIG. 4, each separation plate 41 is attached with its boss portion set in the axial direction of the drive shaft 43 using a set screw 47, and the phases are aligned using a key 45. .

Further, in the center of the nip on the exit side, there are separating claws 41a, 41b, 42a of the separating plates 41 and 42, respectively.

A small-diameter guide roller device 50 is provided for guiding the folded sheets 42b. As shown in FIGS. 2 and 3, this small-diameter guide roller device 50 has left and right small-diameter belt pulleys 52, 53 mounted at the tip of an elongated pentagonal bracket 51, 51 via bearings 54, 54, respectively. Both ends are rotatably supported by shafts 55 supported by the above-mentioned plate-shaped brackets 51, 51, and narrow guide belts 61, 62 are stretched over each of them, with the left belt 61 running counterclockwise and the right belt 62 running counterclockwise. is driven clockwise.

Therefore, after the guide belt 31 forms a nip with the guide roller 34, it combines with the belt 61 of the small diameter kite roller 52 and moves to the lower left, and the guide belt 32 combines with the belt 62 of the small diameter guide roller 53 and is distributed to the lower right. and is configured to transport the folded signatures.

Next, the operation of the folding machine of the rotary printing press configured as described above will be explained. The paper strip 20 vertically folded by the former 1 is cut page by page by the horizontal cutting cylinder 2 into signatures, and a pair of timing rolls 33 are driven at a circumferential speed much faster than the transport speed of the paper strip 20. Since the sheet is fed between the guide belts 31 and 32, a gap is created between the trailing edge of the signature 65 of the previous page and the leading edge of the signature 64 of the next page. At this interval, the separation plate 41 or 4 of the separator 40 is
2 separation claws 41a, 41b or 42a.

42b are rotated clockwise or counterclockwise to alternately interpose them, so that the signatures 64 are distributed to the left side, and the signatures to be transferred next are distributed to the right side. A differential gear mechanism 70 is provided to match the timing of the separation plates 41, 42 with respect to the drive system of the cutting cylinder 2. The pair of separation plates 41 and 42 are driven by gears (not shown).
Separation claws 41 a, 41 b on the respective outer peripheries,
The circumferential speeds of the belts 42a and 42b are set to be the same as that of the belts 31 and 32 of the guide belt device.

The state shown in FIG. 2 is the trailing edge 65a of page A.
This is the moment when the separating claw 42a of the separating plate 42 is already about to cut into the space between the leading edge 64a of page 8 and the leading edge 64a of page 8. As the separation plate 42 rotates counterclockwise, the signatures are removed from the separation plate 42.
separation claw 42a and guide roller 52. Guide roller 34
and is distributed to the left side guided by the guide belt 31, and then transferred downward as shown by arrow B between the guide belt 31 and the guide belt 61 hanging on the small diameter guide roller 52, and is distributed to the left side on page 8. is completed. Next, while the separating plate 42 rotates 1/4, the right separating plate 41 rotates clockwise and comes close to the leading edge of the signature on page A next to B true, just like the separating plate 42, and then 1/4
The pages are rotated and distributed to the right side, and transferred as shown by arrow A between the guide belt 32 and the belt 62.

Here, the separation claws 41a, 41 of the left and right separation plates 41.42
The diameter of b and 42a, 42b is more than twice the diameter of the plate cylinder of the rotary printing press, and the separation claws 41a, 41b, 42a
, 42b are set at the same speed as the transport speed of the signatures, the signatures are reliably sorted to the left and right every 1/4 rotation of the separation plates 41 and 42. The sorted signatures are discharged to left and right impellers 16.17 by belts 31.61 and 32.62 of the belt device, respectively, and are further arranged and stacked one upon another on a paper discharge table 18.19 made of belts. .

[Effects of the Invention] As explained above, the folding machine of the rotary printing press of the present invention has a simpler structure than the conventional double printing type, and can be manufactured at an extremely low cost. In addition, the signatures are free from scratches and scars caused by overprinting and other gripping claw devices, and there is no need to provide extra gripping space on the signatures. Furthermore, the printing speed was previously limited to the limit speed of the gripping claw, but since the gripping claw is not used, the printing speed can be easily increased.
An excellent folding machine for a rotary printing press, which is extremely easy to maintain, can be obtained.

[Brief explanation of the drawing]

1 is a side view of the overall configuration of a folding machine of a rotary printing press showing an embodiment of the present invention; FIG. 2 is an enlarged side view of the separator portion of FIG. 1; FIG. 4 is a front view showing the small-diameter guide roller device taken along the line ■-■ in FIG. 2 above. FIG. 5 is a front view showing a partially broken separation plate. FIG. 2 is an overall configuration diagram of a folding machine. 2・・・・・・・・・・・・・・・・・・Cutting side 31.
32... Guide belt (device) 33...
・・・・・・・・・Timing roll 35.36...
...Guide roller 40...Separator 41.
42... Separation plate

Claims (3)

[Claims] (1) A timing roll that is driven at a circumferential speed slightly higher than the circumferential speed of the cutting cylinder in order to separate the signatures cut by the cutting cylinder, and a pair that transports the signatures downward by sandwiching them between guide belts. A guide belt device, a pair of guide rollers for guiding the guide belt of this guide belt device and forming a nip, and a separating plate inserted between the signatures to change the direction of travel of the signatures from side to side. A pair of separators for sorting, a pair of small-diameter guide rollers disposed to form a pair with the guide belt of the guide belt device for transporting the sorted signatures downward, and a guide belt stretched over these. What is claimed is: 1. A folding machine for a rotary printing press, characterized in that the folding machine comprises a folding machine for a rotary printing press, and is configured to separate the signatures cut by the cutting cylinder into pages and discharge them. (2) The diameter of the separating plate is a little more than twice the diameter of the plate cylinder of the rotary printing press, and the circumferential speed of the separating plate is the same as the transport speed of the signatures. folding machine of a rotary printing press. (3) Rotary printing according to claim 1, characterized in that the rotation timing of the separation plate is determined from the drive system of the cutting cylinder and is driven via phase matching means such as a differential gear mechanism. Folding machine.