JPH0357862B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention provides a printing plate mounted on the plate cylinder of a rotary press,
The present invention also relates to a device for automatically operating a mechanism for separating from the device.

Until now, various proposals have been made as a mechanism for attaching and detaching the printing plate to the plate cylinder, but their configurations are as follows:
Generally, 1 along the groove provided in the longitudinal direction of the circumferential surface of the plate cylinder.
The operating shaft of the book is installed through the plate cylinder, and by fitting a tool into the end of this shaft exposed on the end face of the plate cylinder and manually rotating it, loading and unloading of printing plates has been done. .

However, the work of attaching and removing the printing plate and tightening it involves not only the above-mentioned shaft rotation operation, but also the work of hooking one end of the printing plate to the stationary side hook, and the work of rotating the plate cylinder approximately one rotation, If the process is not smooth, the work will be slow, and newspaper printing, which relies on speedy reporting, will be hampered.

Therefore, among the many manual operations that require mutual coordination, if we could automate just the operation of the rotating shaft for attaching and detaching printing plates, control would become easier and more reliable, and the relationship with others could be made even closer. Therefore, the work of attaching and detaching the printing plate will become quick, reliable, and easy.

In view of the above requirements, an object of the present invention is to create and provide a device that automates the operation of a rotating shaft for tightening plate mounting and removal.

In order to achieve the above object, the configuration of the present invention is to fix a toothed ring to the end of the rotating shaft, provide a segment with a tooth row that can engage with this toothed wheel, and connect this segment to the plate cylinder. a first actuating means for displacing the tooth between two points in the radial direction, that is, between an engaged position and a disengaged position between the tooth ring and the tooth row; Second actuating means are provided for displacing the wheel in the direction of rotation.

In such a configuration, by displacing the segment in the radial direction of the plate cylinder to engage the tooth wheel and tooth row, and then displacing the segment in the direction in which the tooth wheel rotates, the rotating shaft can be rotated. can do.

In the case of a large plate cylinder in which the rotating shaft is installed at a position deeper than the circumferential surface of the plate cylinder and requires operation at a relatively large rotation angle, a relay ring may be interposed between the gear ring and the segment. to ensure smooth power transmission.

The structure and operation of the present invention will be explained in detail below with reference to the drawings according to specific embodiments thereof.

The operation shaft of the plate attachment/detachment tightening device on the plate cylinder can be classified into two types based on the differences in the configuration of each part.In the first type, the shaft is installed at a position relatively deeper than the circumferential surface of the plate cylinder; The second type is a type that requires operation at a relatively large rotation angle, and the second type is a type in which the shaft is installed near the circumference of the plate cylinder, and it is sufficient to operate at a relatively small rotation angle, and corresponds to the former. An embodiment of the invention is shown in FIGS. 1 to 5, and an embodiment of the invention corresponding to the latter is shown in FIG.

Since the latter (FIG. 6) has a simple structure and function, and it is easy to understand the concept of the present invention as a whole, FIG. 6 will be described in detail first.

A known rectangular groove 8 is carved in the longitudinal direction of the circumferential surface of the plate cylinder 7, and a known shaft 9 for tightening the attachment and detachment of the printing plate is installed in this groove 8.
A gear ring, for example, a pinion 1, is installed at one end of the shaft.
Fix 0.

The segment 11 has on its inside a toothed ring, e.g. In the extended position, the internal gear 11a engages with the pinion 10, and in the retracted position, the gear is disengaged.

The air cylinder 12 is held by a slider 14, one side of which is connected to a second actuating means, for example a rod 16 of an air cylinder 15, the displacement of which causes the slider 14 to move along a guide 17 towards the plate cylinder 7. is displaced in the circumferential direction.
The guide 17 is fixed to a side frame (not shown).

When the rod 13 of the air cylinder 12 is extended by inputting an operating push button (not shown) or an electrical command signal, the internal gear 11a of the segment 11 engages with the pinion 10, and in this engaged state, the other gear When the rod 16 of the air cylinder 15 is extended, the pinion 10 rotates in the counterclockwise direction, and the shaft 9 also rotates in the same direction.

When the rod 16 is shortened, the shaft 9 rotates in the opposite direction and returns. By rotating the shaft 9 from side to side, the printing plate is attached to or detached from the circumferential surface of the plate cylinder.

Next, the former, ie, FIGS. 1 to 5, will be described in detail.

A known rectangular groove 8 is carved in the longitudinal direction of the circumferential surface of the plate cylinder 7, and a known shaft 9 for tightening the attachment and detachment of the printing plate is installed in this groove 8.
A gear ring, for example, a pinion 1, is installed at one end of the shaft.
Fix 0. In FIG. 4, reference numeral 18 indicates a plate tensioning device block housed in the groove 8, 19 indicates a bearer of the plate cylinder, and in FIG. 3, 7a indicates a shaft of the plate cylinder.

The relay ring 20 has a sliding surface 21 provided on the plate driving circumferential surface.
A first tooth row, for example, a first internal gear 20a, is installed on the inner peripheral surface of the presser foot/guide 23 fixed with a bolt 22, and is constantly engaged with the pinion 10. A second tooth row, for example, an external gear 20b is provided. 2
4 and 25 are stoppers.

The segment 11 is the external gear 20
A third tooth row, for example a second internal gear 11a, which can be engaged with b, is provided on the inside, and the outside thereof is connected to a rod 13 of the first actuating means, for example an air cylinder 12, which rod 13 is connected in the radial direction of the plate cylinder 7. Displaced to
In the extended position, the second internal gear 11a engages with the external gear 20b, and in the contracted position, the gears are disengaged.

Since the second internal gear 11a and the external gear 20b do not need to be rotated and displaced by engagement, the same effect can be achieved even if pawls are used instead of each other.

The air cylinder 12 is held by a slider 14, and this slider is attached so as to be slidable along an arcuate guide 26 centered on the center of the plate cylinder 7, and this guide is fixed to a side frame 27 via a bracket 26a. ing.

An external segment gear 28 whose gear center is at the center of the plate cylinder 7 is fixed to the upper surface of the slider 14, and a second pinion 29 is always engaged with this gear. Both ends are rotatably supported by a pair of bearing brackets 31 and 32 that protrude upward from the bracket 26a.

On the other hand, the second pinion 29 is constantly engaged with a pair of drive gears 33 and 34, each of which is driven by a rotary actuator 37 and 38 via an electromagnetic clutch 35 and 36, respectively. 39 and 40 are connection couplings, and 41 and 42 are shafts of respective drive gears.

It is also possible to provide a rack (not shown) and an air cylinder (not shown) for reciprocating the rack as actuating means for rotationally displacing the second pinion 29 to the right or left.

In order to tighten the printing plate against the circumferential surface of the plate cylinder and to maintain this tightening continuously, it is necessary that the rotational displacement of the first pinion 10 is locked in the tightening phase.

Therefore, in Figs. 1 and 3, the relay ring 2
A hole 20c with a different diameter is inserted in the middle of the hole 20c, and a pin 43 with a different diameter is inserted into the hole with a different diameter.When the insertion is at its limit, the tip of the pin protrudes outward from the hole, and the outward protrusion is pushed. When retracted into the hole, the entire length of this pin is accommodated within the thickness of the relay ring.

On the other hand, a hole is cut under the guide path of the relay ring 20, a spring 44 is inserted into this hole, a lock pin 45 is placed on top of the spring 44, and the shoulder of the lock pin is pressed with a presser plate 46 to limit its protrusion in the distal direction. The position is regulated, and when the relay ring 20 slides and the different diameter hole 20c and the lock pin 45 come into alignment, the pin 45 protrudes due to the action of the spring 44 and locks into the hole 2.
0c, thereby making the relay ring 20 non-displaceable. Therefore, the first pinion 10, which is constantly engaged with the first internal gear 20a of the relay wheel 20, also cannot be displaced, and thus the printing plate is locked in the tightened position.

When this plate clamping and positioning means is provided, the locking mechanism must first be unlocked when the automatic operating device is activated, and at the same time, it is a premise that the locking mechanism must be locked when returning.

Therefore, the first operating means, that is, the operation of displacing the segment 11 in the radial direction to engage or disengage the second internal gear 11a and the external gear 20b is performed by the lock pin 4.
The above requirements can be achieved by configuring each part in a related manner so that it can be executed as an extension of 5.

The boss portion 47a of a disk 47 is fixed on the shaft 30 of the second pinion 29, and a groove 47b is carved on the circumferential surface of the disk, while a lock lever has a pawl 48 in the middle portion that fits into this groove. Attach the base end of 48a to pin 49
At the same time, an unlock lever 50 for removing a pawl is provided oppositely, and the free end of the lever 48a touches the lower surface of the free end of the lever 48a.
The other end of the lever 50 is pivoted to the tip of the rod 53 of the air cylinder 52 with a pin 54, and a tension spring 57 is inserted between a pair of arms 55 and 56 that respectively protrude from the pair of levers. erect. Adjustment is then made so that the rod 13 of the air cylinder 12 is located on the extension line of the lock pin 45 when the groove 47b and the pawl 48 are engaged.

When the rod 13 of the air cylinder 12 is expanded by inputting an operating push button (not shown) or an electrical command signal, the second internal gear 11a of the segment 11 engages with the external gear 20b, and at the same time the segment 11, the protruding head of the reducing pin 43 is pushed and the relay wheel 2
The lock pin 45 is also displaced downward against the force of the spring 44, and the upper surface of the pin 45 is sunk below the guide path of the relay ring 20. As a result, the relay ring 20 is released from the lock and its sliding displacement becomes free.

Then, when the air cylinder 52 is activated and the rod 53 is pulled, the unlock lever 5
0 moves against the force of the spring 57 and displaces the free end of the lock lever 48a upward with its free end, so that the pawl 48 is pulled out of the groove 47b and the second pinion 29 coaxial with the disc 47 is moved. Rotation becomes free.

After one electromagnetic clutch 35 is connected, when one rotary actuator 37 is rotated in the direction of the hour hand, the drive gear 33 on its output shaft 41 also rotates in the direction of the hour hand, and the second pinion 29 engages with it. is rotated in the driven reverse direction, and the external segment gear 28 that engages with its second pinion is displaced in the direction of the hour hand in FIG. As a result, the relay wheel 20 is displaced to the right in FIG. 1, and the operating shaft 9 is rotated in the hour hand direction via the pinion 10 that engages with the first internal gear 20a.

At the time of return, the one rotary actuator 37 is rotated in the counterclockwise direction and the second pinion 29 is rotated in the counterclockwise direction, thereby rotating the operating shaft 9 in the counterclockwise direction.
returns to the neutral position or tightened position (solid line position in Figure 1).

At the time of starting, if the other electromagnetic clutch 36 is connected and the other rotary actuator 38 is rotated counterclockwise in the direction of the hour hand, the relay wheel 20 is displaced to the left in FIG. 1, and the operating shaft 9 is moved counterclockwise in the direction of the hour hand. When the rotary actuator 38 returns, the other rotary actuator 38 is rotated in the direction of the hour hand to return to the neutral position or tightened position.

When it returns to the neutral position or tightened position, the air cylinder 52 is actuated and its rod 53 is extended to lower the free end of the unlock lever 50, so that the pawl 48 is fitted into the groove 47b by the action of the spring 57. and locked in place.

When the air cylinder 12 is operated in this position to shorten the rod 13, the segment 11 rises and the engagement between the second internal gear 11a and the external gear 20b is disengaged.

With the upward displacement, the lock pin 45 protrudes into the diameter-reducing hole 20c by the action of the spring 44, and the rotational displacement of the operating shaft 9 is locked.

As the pin 43 is locked, the head of the pin 43 protrudes outward in preparation for the next operation.

As described in detail above, with this invention, it has become possible to automatically operate two types of rotating operations of the rotating shaft 9 for plate attachment/detachment during the plate attachment/detachment tightening work. When used in conjunction with other operations, the operation of attaching and detaching the printing plate becomes quick, reliable, and easy, and the effectiveness of high-speed printing can be further improved.

[Brief explanation of drawings]

1 to 5 illustrate a specific embodiment of the invention described in claims 2 and 3, and FIG. 1 is a longitudinal sectional front view taken along line 1-1 in FIG. 3. , Fig. 2 is a plan view, Fig. 3 is a vertical left side view taken along the line 3-3 in Fig. 1, Fig. 4 is a sectional view taken along the line 4-4 in Fig. 1, and Fig. 5 is a FIG. 5 is a cross-sectional view taken along line FIG. 5-5. FIG. 6 is a front view illustrating a specific embodiment of the invention recited in claim 1. 7... Plate cylinder, 8... Groove, 9... Operating shaft, 10...
...Pinion, tooth ring, 11...Segment, 11a
... Internal gear or second internal gear (tooth row or third tooth row), 12 ... Air cylinder,
13... Rod, 14... Slider, 15...
Air cylinder, 16... Rod, 17... Guide, 18... Plate tightening device block, 19... Bearer, 20... Relay ring, 20a... First internal gear (first tooth row), 20b... ...External gear (second tooth row), 20c...Different diameter hole, 2
1...Sliding surface, 22...Bolt, 23...Presser and guide, 24 and 25...Stopper, 26
...Arc-shaped guide, 26a...Bracket, 27
... Side frame, 28 ... External segment gear, 29 ... Second pinion, 30 ...
Second pinion shaft, 31 and 32... Bearing bracket, 33 and 34... Drive gear, 35 and 36...
...Electromagnetic clutch, 37 and 38...Rotary actuator, 39 and 40...Connection coupling, 41 and 42...Drive gear shaft, 43...Reducing diameter pin, 44...Spring, 45...Lock pin, 46... ...Press plate, 47... Disc, 47a...
Boss portion, 47b...Groove, 48...Claw, 48a...
Lock lever, 49...pin, 50...unlock lever for removing claws, 51...pin, 52...air cylinder, 53...rod, 54...pin,
55 and 56...Arm, 57...Spring.

Claims (1)

[Scope of Claims] 1. A gear ring fixed to an end of a rotating shaft for tightening the printing plate, a segment having a tooth row that can engage with the gear ring, and a segment between two points in the radial direction of the plate cylinder. That is, a first actuating means for displacing the tooth ring and the tooth row between an engaged position and a non-engaged position; and a first actuating means for displacing the segment in the direction in which the tooth wheel rotates in the engaged position. 2. An automatic operating device for a printing plate attachment/detachment mechanism in a plate cylinder of a rotary press, comprising: two operating means; 2. A tooth ring fixed to the end of the rotating shaft for plate tightening, a first tooth row that engages with the tooth ring on one side, a second tooth row on the other side, and a tooth ring fixed on the peripheral surface of the plate cylinder. an intermediate ring slidably guided along the plate cylinder; a segment having a third tooth row engageable with the second tooth row; a first actuating means for displacing the row and the third tooth row between an engaged position and a non-engaged position; and in the engaged position, the relay wheel slides the segment along the circumferential surface of the plate cylinder. An automatic operating device for a printing plate attachment/detachment mechanism in a plate cylinder of a rotary press, comprising: a second operating means for displacing the plate in the direction; 3. A tooth ring fixed to the end of the rotation shaft for plate tightening, a first tooth row that engages with the tooth ring on one side, a second tooth row on the other side, and a tooth ring fixed on the peripheral surface of the plate cylinder. an intermediate ring slidably guided along the plate cylinder; a segment having a third tooth row engageable with the second tooth row; a first actuating means for displacing the row and the third tooth row between an engaged position and a non-engaged position; and in the engaged position, the relay wheel slides the segment along the circumferential surface of the plate cylinder. a second actuating means for displacing the lock pin in the direction, a lock pin elastically installed to protrude in the centrifugal direction from below the guide path of the relay ring, and an insertion hole for the lock pin inserted through a predetermined position of the relay ring. plate clamping and positioning means; and the second actuating means engages and disengages the lock pin in conjunction with the engagement and disengagement of the tooth wheel and the third tooth row on an extension line of the lock pin.
An automatic operating device for a printing plate attachment/detachment mechanism in a plate cylinder of a rotary press, comprising: means for positioning an activation position and a return position of an operating means; 4. An automatic operating device for a printing plate attachment/detachment mechanism in a plate cylinder of a rotary press as set forth in claim 2 or 3, wherein both the second row of teeth and the third row of teeth that can engage with each other are replaced with claws.