JPH0798612B2 - Printing signature forming device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a printing signature forming device used when a printed paper or the like (sheet material) is folded to form a signature.

[Conventional technology]

Conventionally, when forming a signature, a right-angle folding apparatus 1 as shown in FIG. 5 is generally used. That is, in the figure, the printed paper 2 travels on the guide plate T from the right side to the left side in the figure (in the direction of the arrow in the figure).
After being conveyed by b, b, the left end of the paper 2 in the figure hits the contact plate 3 and is stopped, the folding blade 4 descends to fold the paper 2 between the pair of folding guides 5, and the folded folding is performed. The tablet is adapted to be dropped downward by the pay-in roller 6.

[Problems to be solved by the invention]

However, in such a conventional printed signature forming apparatus, the printed paper 2 collides with the backing plate 3, so that damage such as tearing may occur in the signature depending on the type of paper or the like and the speed of conveyance. . In order to prevent this, a cushioning material such as a brush is provided on the backing plate 3 so as to reduce the force with which the printed paper 2 collides with the backing plate 3, but there is wear of the brush or the like, high and low transport speed, There is a problem in that it is necessary to adjust the force applied to the paper 2 by a cushioning material such as a brush due to the difference in the thickness of the paper 2 or the like, and it is necessary to remove them when not needed. was there. Furthermore, in recent years, the holding force of the conveyor belt has tended to become stronger in order to improve the accuracy of conveying the printed paper 2, and the force with which the printed paper 2 collides with the backing plate 3 increases, and the method described above is used. Can't deal with it enough.

[Means for solving problems]

Therefore, in order to solve the above problems, the present invention solves the above-mentioned problems by providing a guide plate 11 on which the printed sheet material 12 is placed, and a guide curved surface 18a provided in an elongated hole 17 formed in the center of the guide plate 11.
A pair of folding guide members 18 and 19 arranged to face each other 19a, and a conveying means 14 and 15 for conveying the sheet material 12 on the guide plate 11 along the length direction of the elongated hole 17,
The abutting plate 27 that stops the sheet material 12 by abutting the sheet material 12 conveyed by the conveying means 14 and 15, and the guide curved surface 18a that guides the sheet material 12 when it is formed in a thin plate shape that moves up and down and descends. A pair of folding guide members 1 along 19a
In a printing plate forming apparatus including a folding blade 24 that is folded between 8 and 19, an air suction hole 20a that is blocked by the sheet material 12 when the sheet material 12 is folded downward by the lowering of the folding blade 24. , 21a to the folding guide member 1
The guide curved surfaces 18a, 19a of 8, 19 are formed.

[Action]

According to the printing plate forming apparatus having such a configuration, the folding guide member is formed with the air suction hole opening to the guide curved surface thereof, so that the folding blade starts to fold the printed sheet material, and the sheet material When the air inlet is closed on the curved surface of the guide, air is sucked from the air inlet to reduce the sheet material conveying speed.In this state, when the sheet material is further conveyed and abuts against the backing plate, damage such as tearing occurs. You can slow down to the extent that you don't.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views showing an embodiment of a printing signature forming apparatus according to the present invention.

In the printing signature forming apparatus 10 shown in FIG. 1, reference numeral 11 is a guide plate on which a sheet material 12 such as printed paper is placed, and the sheet material 12 is an upper conveyor belt 14 (conveying means). It is sandwiched between the lower conveyor belt 15 (conveying means) and conveyed in a direction perpendicular to the plane of the drawing. Information board 11
A long hole 17 extending in the direction perpendicular to the paper surface in the drawing is formed in the center of the drawing, and a pair of folding guide members 18, 19 are formed in the long hole 17 with respective arc-shaped guide curved surfaces 18a. 19a
(See FIG. 3) are arranged so as to face each other.
The folding guide members 18 and 19 extend along the length direction of the elongated hole 17, and the air passages 20 and 21 (see FIG. 3) are formed inside each of the folding hole guide members 18 and 19 along the length direction. The air passages 20 and 21 communicate with an air suction pump (not shown). Further, the folding guide members 18 and 19 are respectively provided with air passages.
Air suction holes 20a, 21a communicating with 20, 21 and opening in the guide curved surfaces 18a, 19a are formed. Below each of the folding guide members 18 and 19, there are a pair of folding rollers 22,
23 is rotatably arranged. As shown in FIG. 2, a folding blade 24 formed in the shape of a thin plate is arranged above the sheet material 12, and the folding blade 24 can be moved up and down by a swing arm 25. In FIG. 2, a contact plate 27 that abuts against the sheet material 12 and stops the conveyance thereof is erected on the guide plate 11, and the contact plate 27 is arranged in the vicinity of the folding blade 24. .

In such a printing plate forming apparatus 10, the sheet material 12 is sandwiched between the upper conveyor belt 14 and the lower conveyor belt 15 and conveyed in the direction of the arrow in FIG. Immediately before contacting the contact plate 27, the folding blade 24 descends, and the folding blade 24 moves the sheet material 12 as shown in FIG.
Is folded downward along the guide curved surfaces 18a, 19a of the folding guide members 18, 19. At this time, since the sheet material 12 on the guide curved surfaces 18a and 19a closes the air suction holes 20a and 21a, an air suction pump (not shown) sucks air from the air suction holes 20a and 21a through the air passages 20 and 21, and the sheet material. Decelerate the transport speed of 12. For this reason, the sheet material 12 is further conveyed to the backing plate.
When abutting against the sheet 27, the sheet material 12 can be sufficiently decelerated to such an extent that the sheet material 12 is not broken or otherwise damaged.

The sheet material 12 is brought into contact with the contact plate 27 in a sufficiently decelerated state to be positioned, and the folding blade 24 is further lowered so that the sheet material 12 is folded in the folding roller 22.
It is sandwiched between 23 and, and is formed into a fold sheet and sent downward.

As a means for preventing the tearing of the paper, it is conceivable to provide an adjusting mechanism for accurately adjusting the descending timing of the folding blade and the deceleration timing of the paper, but such means requires a major mechanical modification. Will be needed. However, since the present invention utilizes the conventional mechanism itself, it does not require a major modification of the mechanism and can solve the conventional problems by using almost existing equipment. Furthermore, it can be attached or removed as necessary. There are no parts to be used, and there is no need to bother with humans as in the past.

It should be noted that the sheet material 12 is not limited to paper as in the above embodiment, and other sheet materials may be used in the modern age when the material is abundant.

〔The invention's effect〕

As described above, according to the present invention, the folding blade folds the sheet material between the folding guide members from above the elongated hole in the central portion of the guide plate, and sucks the sheet material in the air suction hole of the guide curved surface of the folding guide member. Since the speed is reduced, the sheet material can be braked in the folded state, and can be bent at an appropriate position without being twisted with respect to the pad plate. Further, since the folding position and the suction position of the sheet material are close to each other, it is difficult to cause deformation at the folding position of the sheet material, and therefore, it is possible to prevent the folded sheet material from breaking and causing damage such as wrinkles. . Further, it is possible to cope with sheet materials of all sizes.

In addition, there is no need for major remodeling, and most of the existing equipment can be used in time, and there is no need for human labor as in the conventional case.

[Brief description of drawings]

1 to 4 are views showing an embodiment of a printing plate forming apparatus according to the present invention. FIG. 1 is a partially sectional front view thereof, FIG. 2 is a side view thereof, and FIG. 3 is a folding guide member. An enlarged sectional view of
FIG. 4 is a partial sectional front view for explaining the operation, and FIG. 5 is a side view of a conventional printing signature forming device. 10 ... Printing signature forming device, 11 ... Guide plate, 12 ... Sheet material, 14 ... Upper conveying belt (conveying means), 15 ... Lower conveying belt (conveying means), 17 ... Long hole, 18 , 19 …… Folding guide member, 18a, 19a …… Guide curved surface, 20,21 …… Air passage, 20a, 21a …… Air suction hole, 22,23 …… Folding roller, 24 …… Folding blade, 25 …… Swing arm, 27 ... Pad.

Claims (1)

[Claims] 1. A guide plate on which a printed sheet material is placed, and a pair of folding guide members provided in a long hole formed in a central portion of the guide plate and having guide curved surfaces opposed to each other. A conveying means for conveying the sheet material on the guide plate along the longitudinal direction of the long hole, a contact plate for abutting the sheet material conveyed by the conveying means to stop the sheet material, and a vertical movement In a printing plate forming apparatus including a folding blade that folds the sheet material between the pair of folding guide members along the guide curved surface when the sheet material is formed into a thin plate and descends, the sheet material is lowered by the folding blade. An apparatus for forming a folding plate, wherein an air suction hole which is closed by the sheet material when the sheet is folded downward is formed in the guide curved surface of the folding guide member.