Paper folding machine and press using the same

A technology for folding machines and conveyor belts, which is applied to printing machines, rotary printing machines, printing, etc., can solve problems such as difficulties, inability to fully alleviate the impact of collision paper stoppers, complex structure of guillotine folding devices, etc., and achieve good transmission Effect

Inactive Publication Date: 2008-11-12
MITSUBISHI HEAVY IND PRINTING & PACKAGING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, the solution disclosed in Patent Document 1 has the following problems: the structure is complicated and the folding machine becomes large-scale, and in practice, for example, according to changes in paper quality, paper thickness, number of pages, etc., the speed of each conveyor belt is adjusted to be appropriate. speed is difficult
[0015] In addition, the solution disclosed in Patent Document 2 also has the following problems: the structure of the guillotine folding device is complicated, and the speed of the deceleration conveyor belt corresponding to changes in paper quality, paper thickness, and number of pages is actually adjusted to an appropriate level. speed is difficult
[0016] The solution disclosed in Patent Document 3 has the following problems: if the distance between the upper and lower pairs of conveyor belts is too large, the signatures cannot be conveyed correctly.
Conversely, if the interval between the upper and lower pair of conveyor belts is narrow, the impact of hitting the paper stopper cannot be sufficiently mitigated.
Therefore, it is necessary to adjust the interval according to changes in paper quality, paper thickness, number of pages, etc., but it is actually difficult to adjust the interval appropriately

Method used

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  • Paper folding machine and press using the same
  • Paper folding machine and press using the same
  • Paper folding machine and press using the same

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Experimental program
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Effect test

no. 1 approach

[0061] Below, refer to Figure 1- Figure 6 The first embodiment of the present invention will be described.

[0062] This embodiment is a proposal in which the present invention is applied to a rotary offset-cylinder type rotary printing machine that performs multi-color printing on both sides of a web (web).

[0063] FIG. 1 is a front view showing an overall schematic configuration of a rotary printing machine (printing machine) 1 .

[0064] The rotary printing machine 1 has along the conveying direction of the web 19: a paper feeding device 3, a paper feeding device (inflight device) 5, a printing part 7, a drying device 9, a cooling device 11, a paper path part (ウエブブパス part). ) 13 and folding machine 15.

[0065] The paper feeding device 3 is a device for feeding the rolled paper 19 and is configured to hold two paper rolls 21 on which the rolled paper 19 is wound in a roll shape.

[0066] While paper is being fed from one paper roll 21, the other paper roll 21 is instal...

Embodiment

[0169] As the lower conveyor belt 65 and the upper conveyor belt 75 of the printing machine LITHOPIA MAX AY1-700 of Mitsubishi Heavy Industries, Ltd., the Figure 4 Polybelt (registered trademark) KCS-350 (width: 15 mm, thickness: 1.1 mm) manufactured by nitta Co., Ltd. with the structure shown in the figure was printed and operated to obtain 16-page guillotine signatures 60 of A4 size.

[0170] In addition, the static friction coefficient of the lower conveying surface 103 and the upper conveying surface 105 against the surface formed of the iron-based material is 0.2 or more and less than 0.3.

[0171] At this time, as the roll paper 19, the grammage is 49g / m 2 、73g / m 2 Two types of coated paper, the printing speed, that is, the rotation speed of the printing plate cylinder 25 changes to 600, 650, 700, 750, 800rpm, and it is measured whether the signature 59 that contacts the paper stopper 87 occurs at each rotation speed Destruction (collision destruction).

no. 2 approach

[0190] Next, a rotary printing press 1 according to a second embodiment of the present invention will be described with reference to FIG. 8 .

[0191] Since the basic structure of this embodiment is compared with that of the first embodiment, only the structure of the clamping force increasing part is different, so here the description will be mainly focused on the different parts, and the parts that are the same as those of the aforementioned first embodiment will be omitted. Repeat instructions.

[0192] In addition, the same code|symbol is attached|subjected to the same component as 1st Embodiment.

[0193]In the present embodiment, the upstream curved portion (plate member) of the knife table 85 extends upstream, for example, to the vicinity of the upper paper guide roller 81 on the upstream side.

[0194] The curved portion W may have a certain degree of curvature, or may sequentially change the degree of curvature.

[0195] Unlike the first embodiment, the pinch roller...

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Abstract

A folding machine includes a lower conveyance belt that forms a lower conveyance path section for guiding and conveying a signature by a lower conveyance surface, an upper conveyance belt that forms an upper conveyance path section for guiding and conveying the signature by an upper conveyance surface, a chopper table for guiding the lower conveyance belt, a stopper for aligning a downstream end position of the signature, and a chopper blade for forming a chopper signature. A coefficient of static friction of the lower conveyance surface and the upper conveyance surface to an iron surface is 0.2 or more and less than 0.3, and a nip roller for increasing holding force to the signature between the lower conveyance surface and the upper conveyance surface is provided at a part more upstream side than the stopper by at least a length of the signature.

Description

technical field [0001] The present invention relates to a folder and a printing machine using the folder. Background technique [0002] In the folding machine (folding machine) of the existing printing machine, the signature (folding book) that is cut into sheets and folded in the upstream process and conveyed by a pair of upper and lower conveyor belts is used as needed during the conveyance. Type (ヨヨツパ) folding device folds in half along the conveying direction. [0003] At this time, the signature conveyed by the conveyor belt abuts against a stopper (stopper), aligns its front end position, and is pressed downward by a switch knife (Chiyotsupabrado) dropped from above. As a result, the signatures are folded in half while being pressed downward, and are discharged to the paper discharge conveyor through the impeller provided below. [0004] Since the signature needs to be accurately conveyed at an accurate timing, the coefficient of friction of the conveying surfaces of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F13/56B65H45/12
CPCB65H45/18B65H2701/1932B65H2404/531B65H29/60B65H29/12
Inventor 七条邦裕本冈干男
Owner MITSUBISHI HEAVY IND PRINTING & PACKAGING MACHINERY
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