JPH0351151Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a clutch device for a rotary printing press.

[Background technology and its problems] A rotary printing press has a printing section and a folding machine. The folding machine is constructed such that the rotation of the printing section from the printing machine shaft is transmitted through a clutch provided in a gear box.

Normally, when adjusting a machine, the clutch is disengaged and only the printing section is driven while the adjustment is made, and after the adjustment is completed, the clutch is connected and both the printing section and the folding machine are driven to start operation. When the clutch is connected, the printing section and folding machine must be connected in a constant phase in order to synchronize their operations.

In conventional clutches, rings are provided on the outer periphery of the opposing surfaces of a pair of discs, teeth and grooves are provided on each ring alternately and radially, and one disc is connected to the other disc by a manual lever. The on and off operations were performed by moving the switch to the . When the clutch is engaged, the transmission shaft is rotated at low speed in order to align the printing section and the folding machine.
I looked at the pointer attached to the gear box that indicated the phase of the rotating clutch, and when the phase was correct, engaged the clutch using a manual lever.

Therefore, each time the clutch is engaged or disengaged, an operator must go to the gearbox and perform manual operation, making automation impossible.

[Purpose of the invention] The purpose of the invention was made from this point of view, and the purpose of the invention is to provide a printing press that can be automated by constantly engaging a pair of clutch bodies in a constant phase and smoothly. The object of the present invention is to provide a clutch device.

[Means and effects for solving the problems] The clutch device of the rotary printing press according to the present invention has the following features:
In a clutch device of a rotary printing press that connects or disconnects a folding machine shaft from a constantly rotating printing press shaft, an axis that is located at a position offset from the central axis of a ring-shaped body and that passes through said central axis and is perpendicular to the central axis. a clutch body having a row of ridges parallel to the ridges; a ring-shaped body opposite to the ring-shaped body of the clutch body; a deep trough that engages with the ridge; It is characterized by comprising clutch bodies each provided with a shallow valley, and means for moving one of the clutch bodies toward and away from the other to selectively transmit the rotation of the printing press shaft to the folding machine shaft.

[Example] The present invention will be described below with reference to figures showing one example. In FIG. 1, a gear box 11 rotatably supports a printing press shaft 13 via a bearing 12, and a pinion 15 and a pulley 16 are respectively attached to the printing press shaft 13 via a key 14. Gear 17 meshing with pinion 15
has a clutch body 18 on one side and is rotatably supported on a shaft 20 via a bearing 19. The shaft 20 is rotatably supported by the gear box 11 by a bearing 19. Opposite the clutch body 18, a clutch body 21 is slidably but non-rotatably inserted into the shaft 20 via a sliding key or spline 35. The clutch body 21 is a shifter mechanism 2
Since it is connected to the cylinder 23 via 2,
The actuation of the cylinder 23 moves the clutch body 18 in the left-right direction in the figure to engage and disengage the clutch body 18.

A gear 25 is attached to the shaft 20 via a key 24, and a pinion 26 meshing with the gear 25 is attached to a folding machine shaft 28 via a key 27. The folding machine shaft 28 is rotatably supported by the gear box 11 by bearings 29 and 30. Further, the folding machine shaft 28 is provided with a brake mechanism 32 that contacts a seat plate 31 fixed to the gear box 11.

As shown in FIGS. 2 and 3, for example, the clutch body 18 includes a ring-shaped body 51 that is arranged in a line parallel to an axis that is offset from the central axis of the ring-shaped body 51 and that passes through the central axis and is orthogonal to the central axis. A mountain 52 is provided. On the other hand, as shown in FIG. 4 and FIG.
There are two deep valleys 54 that are slightly deeper than the height of the deep valleys 54, and a shallow valley 55 that is continuous with the deep valleys 54 and has a shallow valley 55 on the inlet side in the rotational direction that is approximately half the depth of the deep valleys 54 and approximately the same width as the deep valleys 54. It is provided.
Note that the side having the peak 52 is the clutch body 21,
The side having the deep valleys 54 and shallow valleys 55 may be used as the clutch body 18.

Next, the operation of the embodiment described above will be explained. Now, in the state shown in FIG. 1, when the pulley 16 is rotated from a drive source (not shown) via a belt (not shown), a driving force is applied from the right end of the printing press shaft 13 to the printing section (not shown). communicated. At this time, the gear 17 is rotated by the pinion 15 attached to the printing press shaft 13.
9, the shaft 20 does not rotate. Therefore, the folding machine shaft 28 does not rotate.

Here, in order to rotate the folding machine shaft 28, the printing machine shaft 13 is rotated at a very low speed, for example, about 10 rpm or less, and pressurized fluid is sent to the cylinder 23.
Then, the clutch body 21 is moved through the shifter mechanism 22.
moves to the right in Figure 1. As the clutch body 21 moves to the right, the crest 5 of the ring-shaped body 53 of the clutch body 21
6 (see Fig. 5) is the rotating clutch body 1.
It is in contact with the top surface of the mountain 52 of 8. Naomo clutch body 2
1 moves to the right, the peak 52 touches the shallow valley 55, and as the clutch body 21 moves further to the right, the peak 52 touches the deep valley 54.
The engagement as a clutch is terminated. At this time, the peaks 52 and deep valleys 54 of the clutch bodies 18, 21 are arranged in a row at positions offset from the central axes of the ring-shaped bodies 51, 53 and parallel to an axis passing through the central axes and perpendicular to the central axes. Because I have
Both clutch bodies 18, 21 are always engaged in constant phase. Note that when the clutches are engaged, if the folding machine shaft 28 rotates when both clutches are not completely engaged, it is unstable and dangerous, so when the clutches are engaged, the rotation of the folding machine shaft 28 is prevented by the brake mechanism 32. , the brake mechanism 28 is released via a limit switch (not shown) operated by the clutch body 21 in which the clutch body 18 and the clutch body 21 are fully engaged. When the brake mechanism 32 is released, the folding machine shaft 28 rotates.

[Effects of the invention] As described above, in the present invention, when the other clutch body moves toward one of the clutch bodies due to the engagement operation of the clutch, the clutch body is provided with its axis shifted from the other clutch body. Since the peaks of the clutches enter into the shallow valleys of the other clutch bodies and then into the deep valleys for engagement, the engagement of the clutch bodies is always at a constant phase and is smooth and reliable. Therefore, the cylinder can be operated without relying on human power as in the past, which has the advantage of enabling automation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall sectional view, Figs. 2 and 3 are a plan view and a front view of one clutch body, and Figs. 4 and 5.
The figures are a plan view and a front view of the other clutch body. 13...Printing press shaft, 18,21...Kurachi body,
23... Cylinder, 28... Folding machine shaft, 51, 53
...Ring-shaped body, 52...Mountain, 54...Fukaya, 5
5...Asaya.

Claims (1)

[Scope of utility model registration request] In the clutch device of a rotary printing press, which connects and disconnects the folding machine shaft from the constantly rotating printing press shaft,
A clutch body provided with a row of peaks at a position offset from the central axis of the ring-shaped body and parallel to an axis passing through the central axis and perpendicular to the central axis, and a ring opposing the ring-shaped body of the clutch body. a clutch body provided with a row of deep valleys that engage with the ridges and shallow valleys that are continuous with the deep valleys and have a depth approximately half of the deep valleys, and one of the clutch bodies is brought into contact with and separated from the other; A clutch device for a rotary printing press comprising means for selectively transmitting rotation of the printing press shaft to the folding machine shaft.