JPS63106276A - Chopper fold driving gear - Google Patents

Abstract

PURPOSE:To enable the chopper action to be promptly further easily maintained to the best condition with no necessity for suspending operation, by enabling the reciprocating timing of a chopper blade for rotation of a chopper fold holding drum to be adjusted while the operation of a folding machine is continued. CONSTITUTION:If a handle 29 is turned, a lever 33 is driven as shown by a reciprocating arrow head S by feeding a nut member 31 by a thread. In accordance with the above, a helical gear 16' slides on a spline shaft as shown by a reciprocating arrow head S'. Here gears 15', 16' are formed in helical gears, and if one helical gear 16' of both the gears moves in the direction of the axial center, a position of both the helical gears 15', 16' changes. In this way, a position for a holding drum gear 14 with a driving short shaft 17', driving a chopper device, changes. Accordingly, the reciprocating timing of a chopper blade 10 for rotation of a holding drum is adjusted. Consequently, adjustment of high degree can be promptly and easily performed with no necessity for particular skill.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a chopper folding drive device for a folding machine attached to a rotary press, and is designed to keep the chopper folding operation in the best condition while continuing operation. The present invention relates to a chopper folding drive device improved to be adjustable.

[Prior art]

FIG. 3 shows a chopper device of a folding machine attached to a rotary printing press.

A printed long paper (printed paper) 1 is fed to a triangular board 2, folded in half in the width direction, cut by a cutter cylinder 3, and cut at right angles by a thruster cylinder 5 (printed paper). (perpendicular to the direction of travel) to form a chive-folded signature 6 shown in FIG.

The above-mentioned signature 6 is fed into the chopper device 8 while being sandwiched between vertically opposing conveying tapes 70.

FIG. 5 is a plan view of the chopper device 8.

FIG. 6 shows a cross section taken along the line ■-■ in FIG. 5.

The conveyed signature 6 hits the stopper 9. At the same time, the signature 6 is struck with the chopper blade 10 and pushed into the folding roller 11, and the signature 6 is further folded in half to form a four-fold square fold @6' shown in FIG.

FIG. 8 is an explanatory diagram showing the drive system of the folding machine.

The cutter cylinder 3, plunge side 4, and jaw cylinder 5 are driven from the drive shaft 12 of the entire rotary press through several gear groups 13, and the jaw cylinder gear 14
The camshaft 19 is driven from there through the idle gears 15 and 16.

A cam 20 is attached to the camshaft 19, and this cam 20 drives the chopper blade 10 upward and downward. Further, the folding roller 11 is continuously rotated by a timing gear 21 provided on a camshaft 19 via a timing belt 22. Therefore, the chopper device 8
Since the chopper blade 10 is driven by a series of gear trains as described above, the chopper blade 10 always moves up and down with respect to the signature 6 at the same timing.

[Problem that the invention seeks to solve]

As described above, if the chopper blade 10 always maintains a constant timing with respect to the jaw cylinder 1O, it will not be possible to obtain a good operating state in response to various changes in conditions. That is, in the low speed operation (20 to 5011 m) at the start of printing and the high speed operation (500 to 7009 m), the time required for the signature 6 to be conveyed by the conveying tape group 7 and reach the stopper 9 is slightly different.

The reason is transportation.

The difference in pressing force between the upper and lower sides of feeding tape group 7, and the paper quality of signature 6.

This is because it is affected by the difference in printed pattern area and the difference in friction coefficient. Based on the moment when the chopper blade IO hits signature 6, it is 15 to 30 times lower at low speed than at high speed.
M-folder 6 advances with a delay. When the delayed signature 6 is hit with the chopper blade 1O as described above, the signature 6 does not become a normal signature 61, and the chopper blade 10 and 7 orging roller 1
If the paper jams between 1 and 1, the machine will stop and the jammed signature 6'
This has the disadvantage of having to be removed, resulting in wasted time. In order to prevent this, it is necessary to predict the amount of delay in the signature 6 based on the printed matter based on experience, loosen the bolts (not shown) on the connecting part of either the drive shaft 17 or the camshaft 19, and connect the large input side. The only way is to shift the phase on the output side (not shown). This work requires about 9 hours for the printing engineer and requires more preparation time than necessary, which has the drawback of significantly reducing the operating rate of the rotary press. Driving even faster.

In order to improve the folding accuracy of the chopper signature 6', the signature 6 is chopped by finely adjusting the stopper 9 back and forth.

It is perpendicular to the radar 10 and the signature 6 is a stopper.

Adjusting the stopper 9 is extremely difficult and requires a high level of skill, as it is necessary to hit the chopper 7 with a 10 radius while not hitting the stopper 9 strongly, but lightly.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to quickly and easily operate the rotary press and folding machine without requiring a high degree of skill or a great deal of labor while continuing the motion of the rotary press and folding machine. The object of the present invention is to provide a drive device that allows the chopper to operate in the best possible condition.

[Means for solving problems]

The drive device of the present invention, created to achieve the above object, has a structure that allows the timing of the reciprocating movement of the chopper blade with respect to the rotation of the chopper folding machine to be adjusted while the manual folding machine continues to operate. And, in the timing adjustment structure, at least one pair of gears of a gear train provided for driving the mouth cylinder and the chopper blade is a helical gear, and one of the pair of helical gears is a helical gear. At least one of the two is slidable in the axial direction of the rotating shaft.

[For production]

According to the above configuration, it is possible to adjust the timing of the reciprocating operation of the chopper blade with respect to the rotation of the jaw cylinder while continuing to operate the folding machine, so that even if an unskilled operator operates the chopper blade during operation. You can advance or delay the timing to find the point where the quality of the signature is the best. Therefore, it is possible to quickly and easily adjust the altitude without requiring any additional skill, and furthermore, it can be adjusted without stopping operation, so it does not impede work efficiency.

〔Example〕

Next, regarding FIGS. 1 and 2, one example of the present invention will be described.

An example will be explained.

The gear train for driving the chopper device shown in FIG.
Fig. 2 shows the location indicated by the arrow ■ viewed in the direction of the arrow ■.

In this embodiment, the present invention is applied to a transmission section between the gears 15 and 16 shown in FIG. 2 and the driving short shaft 17', and a cross section thereof is shown in FIG.

An idle gear 15 that meshes with the jaw gear 14 is constructed of a helical gear, has a wide tooth width, rotates an outer ring, and meshes with a helical gear 16' that rotates a short drive shaft 17'.

A tin line shaft is cut at the end of the short drive shaft 17',
The helical gear 16 is fitted so as to be slidable in the axial direction.

23 is a frame, 24 is a bearing retainer, and 25 is a bearing.

On the other hand, the screw shaft 26 is rotatably supported on the frame 23 and the cover 27, and a handle 29 is fixed to one end of the screw shaft 26. 28 is a bearing fixed to the cover 27;
30 is a set screw.

The nut member 31 is screwed onto the screw shaft 26.

32 is a guide member.

A lever 33 is attached to the nut member 31 mentioned above.

Reference numeral 34 denotes a guide bar that locks the rotation of the lever 33 and guides it in the left-right direction in the figure.

Seven flange 16a are integrally connected to the helical gear 16' to form an annular groove 16b'i, and the pin 3
6 is inserted into the annular groove 16b, and the pin 36 is attached to the lever 33.

When the handle 29yk is turned, the nut member 31 is threaded and the lever 33 is driven as shown by the reciprocating arrow S, and accordingly the helical gear 16' slides on the spline shaft as shown by the reciprocating arrow S'.

Since the gears 15' and 16' are helical gears,
One of the helical gears 16/ is on the axial center.

When moving in the direction, both helical gears 15' and 16'
The phase of changes. In this way, the drive short shaft 17' for the jaw gear 14 (driving the chopper device)
and the phase changes. Therefore, the timing of the reciprocating operation of the chopper blade 10 relative to the rotation of the jaw cylinder 5 (see FIGS. 1 and 8) is adjusted.

〔Effect of the invention〕

As described in detail above, according to the present invention, the timing of the reciprocating operation of the chopper blade relative to the rotation of the jaw cylinder can be adjusted while continuing the operation of the rotary press and the folding machine. All you have to do is advance or retard the timing of the chopper blade during operation to find the point where the quality of the signature is the best. Therefore, it is possible to quickly and easily adjust the altitude without the need for a separate expert.Moreover, it is possible to adjust the altitude without stopping operation, so it has an excellent emergency effect that does not impede work efficiency. This greatly contributes to improving the quality of chopper equipment.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention. FIG. 2 is an explanatory diagram of a place where the present invention is applied in the above embodiment. Fig. 3 is a schematic 'M' plane view showing the structure of the fold, Fig. 4 is a perspective view of the signature at an intermediate stage of processing, Fig. 5 is a plan view for explaining the operation of the chopper folding machine, and Fig. 4 is a perspective view of the signature at an intermediate stage of processing. FIG. 6 is a sectional view as well. FIG. 7 is a perspective view of the signature after chopper folding. FIG. 8 is an explanatory diagram of the drive system of the chopper device. Ru. l...Printing paper, 2...Triangular plate, 3...Cutter cylinder, 4...Pushing cylinder, 5...Pulling cylinder, 7
...Conveyance tape, 9...Stopper, 10...
Chopper blade, 11...7 orging roller,
14... Mouth barrel gear, 15... Idle gear,
15'... Helical gear with wide tooth width, 16' (
Helical gear externally fitted on spline shaft), l 6b
...Annular groove, 17...Drive shaft, 17'...
Drive short shaft, 26... Screw shaft, 29... Handle, 31... Nut member, 33... -shi ノ(-

Claims (1)

[Claims] The folded book from the mouth cylinder of the folding machine for a rotary printing press is
A chopper folding device for folding in a direction perpendicular to the grip folding device has a structure in which the timing of the reciprocating movement of the chopper blade relative to the rotation of the gripping cylinder can be adjusted while the folding machine continues to operate, and The timing adjustment structure includes at least one pair of a plurality of gears of a gear train provided for driving the mouth cylinder and the chopper blade being a helical gear, and at least one of the pair of helical gears being a helical gear. A chopper folding drive device, characterized in that it is capable of sliding operation in the axial direction of a rotating shaft.