JPS5934623B2 - Folding machine including folding rolls that can adjust the rotation speed of the printing press - Google Patents

Description

[Detailed description of the invention] The present invention relates to a folding machine in a rotary printing press.

In a rotary printing press, printing is carried out in the form of continuous paper, which is cut after printing, folded and discharged in the form of a signature, and the signature is transferred to the next process. This signature discharge process is normally carried out by a device called a "folder" located outside the printing section of the printing press. Folding machines usually include a triangular plate former that folds continuous paper, a slitter that cuts paper vertically, a cutting cylinder that also cuts horizontally, a folding cylinder that folds paper, a box cylinder that transports paper, and a chopper that creases paper. , Fold roll to fold paper. It includes turn bars and guide rolls that change the direction of paper, and conveyors. Printed paper needs to be folded into signatures of various shapes depending on its use, such as for flyers, newspapers, books, etc.

For example, with a conventional folding machine, continuous paper is passed through a former and folded into half-width pieces. Further, the paper can be cut through a folding cylinder or a cutting cylinder and discharged as four folds, or the four folds can be discharged as eight folds using a chopper. Alternatively, the continuous paper is cut by passing it directly through the folding cylinder and cutting cylinder via the turn bar and guide roller without passing it through the former (either by cutting the center of the paper width with a slitter at the nip roller, or without cutting it), and then folding it in half. It is possible to output half-width parallel sheets, or to output double-folded gold mines. Or, insert a chopper into the bi-folded half-width item and fold it into quarters (1/4
There are some items that can be discharged as signatures (width). However, with the diversification of the purposes for which printing paper is used, there are also demands for other forms of signature discharge.

Accordingly. An object of the present invention is to provide a folding machine that can handle such new folding forms.

In the present invention. The half-width double-fold continuous paper that comes out of Former 1 is a folding drum. Make sure to enter the cutting cylinder and the J torso at approximately the center of their length. The forma and the torso are positioned. When the rolled continuous paper is formed into a folded book, a so-called "grip allowance" may be provided. Therefore, even if the continuous paper is inserted into the longitudinal center of the folding drum, etc. In view of the above, care should be taken to enter the longitudinal center of the cylinder, so that the conveyor in the next stage, and also the folding rolls and tippers, have their center lines on the axis perpendicularly across the longitudinal center of said cylinder. Furthermore, there is a full-width turn bar above the former.The folding machine of the present invention utilizes these arrangements.
In addition to the traditional folding method, you can also fold the entire width of the paper without passing it through the former. After passing through the folding cylinder and cutting cylinder and folding the entire width in half. On the conveyor, it is further folded by a chopper and a signature having a half-width dimension perpendicular to the fold can be delivered. A folding machine for Intsumugi waist with such a configuration (Japanese Patent Application No. 115848, filed earlier by the applicant Usomoto, August 25, 1980)
It is disclosed in the specification of the Japanese patent application.

In the case of these two folds. Let's think about the folds that are placed on a conveyor from a folding drum. In the case of the former signature, the length of the signature in the horizontal direction (direction perpendicular to the conveyor feeding direction) is compared to the horizontal length of the signature in the latter case. Short. In other words, you will notice that it is half.

Furthermore, it is important to note that the paper sent from the folding cylinder to the conveyor is kept constant in relation to the printing speed in the printing press. The books are advanced at a certain distance from each other. So if we consider the case where these signatures are further folded on the conveyor, the signatures are folded in one stroke, and then the signatures are folded on the underside of the conveyor. The book is folded by a pair of folding rolls located on the conveyor.The book is folded from seven sides of the conveyor while being drawn downward from the conveyor by the pair of folding rolls. As the next signature is sent, the preceding signature must be at the rear end of the previous signature and completely disappear from the conveyor before the leading edge of the next signature arrives. .
If this is not the case, the preceding signature will be removed before it disappears from the conveyor. At the back end of the signature. The leading edge of the next signature will collide. I'm not feeling well. Therefore, in such a folding roll, the rotational speed of the roll needs to be set in accordance with the feeding speed of the signature so that the collision between the signatures as described above does not occur. By the way, as mentioned above, if there is a change in the horizontal length of the signature, it is possible to set the rotation speed of the folding roll according to the maximum horizontal length. This folding roll should be able to process any signature length in the lateral direction without any problems. However, if you do it like this. Even if the lateral dimension of the signature is smaller than the maximum dimension, the folding roll pair will always be rotated at its set speed (high speed).This means that even if the lateral dimension of the signature is smaller than the maximum dimension, Other than when measuring dimensions, this means that energy is wasted in the rotation of the folding rolls.In addition, fast rotation increases the wear and tear of parts, making them more likely to rattle. This causes inconveniences such as shortening the service life of the folding rolls.It also increases the cost.The present invention is a folding machine that eliminates the above-mentioned disadvantages, and particularly relates to one folding roll. The purpose is to provide something.

The present invention will be explained below by means of preferred embodiments thereof.

Figures 1 and 2 (both are perspective views of the folding machine of the printing press).

In Fig. 1, the continuous printing paper W is folded by the former F. This continuous paper (is then fed into the longitudinal center of the cutting cylinder 2, folding cylinder 3, and folding cylinder 4).
1.

And the paper width signature (meaning one width of the original printing paper W. However, since the width of the original printing paper may vary, the width of the signature may also vary) 11 and 12. It is fed onto the conveyor belt 1 of the conveyor C. (1) As shown in Fig. 2, the continuous printing paper W is not passed through the former 1F, but is turned by the turn bar 1T. After the direction is changed by another roller, the width of the continuous paper W is cut. Cylinder. Folding cylinder. It is constructed so that it can be inserted into a folding cylinder or the like in a manner that matches the length of the cylinder.

The sheets are then sent to the conveyor belt 1 of the conveyor as single-width signatures (meaning the same width as the original printing paper W; however, this width varies as described above) 21, 22 (FIG. 5).
In FIGS. 3 and 5, the conveyor belt 1 moves in the direction indicated by the small arrow k. In FIG. 3, the folds 11 and 12 of the paper width 1 are sent from the folding cylinder on the conveyor belt 1 in the direction indicated by the arrow l.

In Fig. 5, the signatures 21 and 22 (on the old general conveyance belt 1 in the direction indicated by the arrow l) are sent from the folding cylinder.
In the diagram, the distance between successive signatures is always constant P.
In Figures 3 and 5, 16 is the paper stopper. Figure 4 is a sectional view of the conveyor 1. 14 is a table. 15 is a pair of folding rolls.

When the signature 11 being fed on the conveyor 1 hits the paper stopper 16, the forward movement of the signature 11 is stopped thereby. At the same time, the chiotsupah arm 17 immediately descends. Accordingly, Chiyotupa 113 descends. In Figure 4a, Chiyotsupa 113
The tip is in contact with the signature 11. Chiyotupa 113 still folded the signature book. The fold 11 is made to bite into the folding roll pair 15 (FIG. 4b). At this time, Chiyotsupa 13 is at its lowest position and will rise thereafter. 4th c
In the figure (the machiyotsupa 13 is in the middle of its ascent; on the other hand, the folding book 11 descends while being folded almost in the center by the pair of folding rolls 15, and is about to disappear from the top of the table 14; it soon leaves the folding rolls 15. During such folding, the next signature 12 (also progressing on the conveyor 1) will be discharged downwards. .The rear end 51 of the signature 11 is reached before the conveyor 1 reaches the position of the trailing edge 51 of the signature 11.
2● ◆ and must be lower than the top surface of the table 14.

In other words. The speed of the folding rolls 15 must be selected so that interference between the previously folded signature and the subsequent signature does not occur. Next, consider the case where the width of the signature is large in the horizontal direction as shown by 21 and 22 in FIG. In this case, signature 2
1 and 22 do not pass through the former, but pass through the folding cylinder and cutting cylinder with the paper width V1. It is then transported by a conveyor belt 1.
When the signature 21 hits the paper stopper 16, the forward movement of the signature is stopped by the stopper 16. At the same time, the paper chipper 13 immediately begins to descend and hits the upper surface of the signature 21, as shown in Figure 6a, and then the paper chipper 13 begins to descend, as shown in Figure 6b.
continues to decline. In Fig. 6c, the signature is bitten by a pair of folding rolls, folded, and lowered. He is about to disappear from Table 14. During this folding process, the next signature 22 is carried on the conveyor. In order to avoid collision with the signature 21 (first signature 22), the signature 22 must be lowered so that it is located below the upper surface of the conveyor 1 and the table 14 before it travels the same distance. Therefore, in this case, the pair of folding rolls 15 must be rotated at a higher speed than in the previous case.In this case, the mechanism for changing the rotation speed of the pair of folding rolls 15 is the seventh one.
As shown in FIG.

In the figure, 13 (1 chopper), 17 is a chopper arm, 14 is a table, and 15 is a pair of folding rolls.
Fold roll pair (fold roll gear 2 on the same axis as that)
7 and 27 are fixed. Idle gears 28, 28 mesh and engage with these two gears, respectively. On the other hand, the two idle gears also mesh and engage with each other. And another idle gear 2 is connected to one gear of the idle gear 28.
9 are meshed and engaged. The idle gear 29 (1) has a bevel gear 31 fixed on the same axis as the idle gear 29 (1).
In FIG. 7, a gearbox 45 is located to the left of the above-mentioned gear train.

A drive shaft 42 is rotatably supported on the gear box, and a gear 35 and a gear 33 are fitted and supported rotatably with respect to the drive shaft.
Further, the drive shaft 11. ．． A groove wheel-shaped clutch 38 is located between both gears. It is slidable in the axial direction of the drive shaft 42. Further, it is mounted so as to be rotatable in cooperation with the drive shaft in the rotational direction of the drive shaft. A friction engagement member is attached to the outer surface of the flange of the groove wheel type clutch.
A similar frictional engagement member is attached to the end surfaces of gears 35 and 33 facing the frictional engagement member. Mata clutch 38
A clutch lever 39 is playing in the groove. Furthermore, a gearbox 45 (including a driven shaft 41, on which a gear 36 and a gear 34 are fixed) is meshed with a gear 36 (first gear 35), and a gear 34.
is configured to mesh with the gear 33. gear 33
and 34, and gears 35 and 36, the relationship in gear size is reversed. Clutch 38 is. gearbox 45
By means of a clutch operating handle 44 leading to the exterior of the.
By moving the clutch lever 39, it can be slid axially on the drive shaft 42. For example, when clutch 38 is moved to the left in FIG.
Since the gear 35 is engaged with the friction member of the drive shaft 42, the gear 35 is rotated by the power from the drive shaft 42. Then, the gear 36 that meshes with the gear 35 is rotated. Therefore, the shaft 41 is rotated. axis 41
extends outside the gabox, and the bevel gear 3 is attached to this tip.
2 is fixed. This gear 32 is the bevel gear 3 mentioned earlier.
It is designed to mesh with 1. Therefore, the rotation of the drive shaft 42 (through the false gearbox and further through the previously mentioned gear trains 27, 28, 29, 31)
This is conveyed to rotate this. The rotational speed of the folding rolls is determined in this case as a function of the gear ratio of the gears 35 and 36 in the gearbox 45. In the example shown in Fig. 7, the gear 35 on the drive shaft side is smaller in diameter than the driven gear 36. The driven shaft 41 rotates at a lower speed than the 1st drive shaft 42. Bevel gear 32 also rotates in the same manner. The folding roll pair 15 is then rotated at a rather low speed. This rotation may be set at a convenient speed for folding the previously mentioned one-width signature so that it disappears from the table 14 as described above. When clutch 38 is moved to the right. Contrary to the above, engagement between the friction member of the clutch and the friction member of the gear 33 occurs. This causes the gears 34 and 32 to rotate. The folding roll pair 15 is rotated in the same manner as before.

However, as seen in FIG. 7, the gear 33 is larger than the gear 34, so the first driven shaft 41 and therefore the bevel gear 32 are
It rotates at a higher speed than the drive shaft 42. The folding roll pair 15 is then rotated at a higher speed than in the previous case. This rotation may be set at a speed convenient for folding the one-width signature as described above so as to be submerged from the surface of the table 14 as described above. In other words, by using the gear switching mechanism including the latch, the folding roll pair 1 can be used to prevent successive signatures from colliding, regardless of the signature width 1- or ±.
5 rotation speed can be selectively adjusted.

However, purchasing a speed regulator for folding rolls is not limited to the above. It is of course possible to incorporate, for example, a continuously variable transmission instead of the latch type gear changer as described above. In this way, the rotational speed of the pair of folding rolls 15 can be adjusted continuously. This is convenient because it can accommodate various changes in the paper width of the folded book. As described above, in the present invention, the rotation speed of the pair of folding rolls can be adjusted. Convenient regardless of the horizontal dimensions of the foldbook. Can perform folding.

[Brief Description of the Drawings] Figure 1 is a perspective view of the entire folding machine of a printing press, showing the continuous printing paper being folded by a former and then introduced into a folding cylinder. Figure 2 is a perspective view of the entire folding machine of the printing press, showing the continuous printing paper being changed in direction by the turn bar and then introduced into the folding cylinder. Figure 3 is a top view of the conveyor. This is a diagram showing a short lateral signature being sent on a conveyor. Figures 4a, 4b, and 4c are vertical sectional views taken perpendicular to the direction of travel of the conveyor, showing the signature being folded by the folding rolls. Figure 5 is similar to Figure 3. In this case, the diagram shows a long signature being sent in the horizontal direction on a conveyor. 6th
Figures a, 6b, and 6c are similar to Figure 4, and show a situation in which the signature, which is long in the horizontal direction, is folded by a folding roll. Figure 7 is an enlarged vertical sectional view of the vicinity of the folding roll and gearbox. Figure 8 is a side view of the vicinity of the folding roll and gearbox taken parallel to the conveyor's traveling direction. Explanation of the symbols of the main parts. F...Forma 1.W
...Continuous paper. 2, 3, 4... Folding drum, etc. T... Turn bar one. C... Conveyor. 11, 12, 21, 22... fold. 15,1
5... Folding roll pair. 13...Chiyotsupa one. 27, 28, 29, 31...Gear. 45
...Gearbox. 33, 34, 35, 36・
·····gear. 38...Clutch.

Claims (1)

[Scope of Claims] 1. Continuous paper that has been former-folded by a folding machine of a printing press is made to enter a folding drum, etc., or continuous paper that has not been former-folded is made to enter a folding drum, etc. via a turn bar and a guide roll, Next, in the case where the paper is configured to enter a conveyor as a signature, the relative position of the former with respect to the folding drum, etc. is changed so that the continuous paper that is vertically folded in half and comes out of the former enters the longitudinal center of the folding drum, etc. In addition, the turn bar is configured so that full-width paper can be introduced into the folding drum, etc., and the full-width continuous paper that is not folded by the former and advances via the turn bar and guide rolls can be introduced into the folding drum, etc. It is configured so that its width dimension almost matches the length of the folding drum, etc., so that it can enter the folding drum, etc. 1. A folding machine for a printing press, characterized in that the roll includes a mechanism for adjusting the rotational speed of the folding roll according to the lateral dimension of the paper to be folded. 2. In claim 1, the folding roll is configured such that the rotational speed of the folding roll can be adjusted to either high or low speed depending on the lateral dimension of the paper to be folded. A folding machine of a printing press, characterized in that the folding machine includes a gear switching mechanism including a clutch for the purpose of the folding machine. 3. Claim 1 provides that the folding roll has a configuration in which the rotational speed of the folding roll can be continuously adjusted according to the lateral dimension of the paper to be folded. A folding machine of a printing press, characterized in that it includes a transmission.