JPS6326706B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a plate cylinder of an electric offset rotary printing press,
A West German patent application for a cylinder unit consisting of rotating cylinders such as an impression cylinder, a blanket cylinder, and a paper take-up cylinder, most preferably a plate cylinder, which is rotated by manually adjusting the rotational angle position thereof.
P2724135.6 [Special Publication No. 56-54230 (Japanese Patent No.
1112307)].

[Conventional technology]

Offset rotary printing presses or copiers require various adjustments during non-continuous printing (i.e., during machine pre-adjustment), and the rotational speed and drive type of the machine at that time are determined by the work to be performed (for example, plate replacement). , fixing, ink filling, test printing, cleaning, test run, etc.). Therefore, for a given work, it is necessary for the operator to manually rotate the cylinder section, including the plate cylinder, etc., forward and backward several times, or manually rotate it from its zero position to the desired position. This means that it is possible to do so.

For this purpose, offset rotary printing or copying machines known hitherto have a crank or manual wheel, which can be manually operated, if necessary, either directly or via a reduction gear mechanism that reduces the required rotational moment. This makes it possible to adjust the rotational angle position of rotating parts (cylinder parts) such as the plate cylinder (see West German Patent Publications No. 841759 and No. 456626, respectively). In the case of continuous printing, the crank must be separated from the rotating parts of the machine via a safety coupling, but the manual wheel that follows it may also be partially rotatable. (West German Patent Publication No. 1168923
(see U.S. Pat. No. 3,992,991). Electric type key mechanisms are often used in machines that are easier to operate. In other words, forward rotation or backward rotation type.
The desired mechanical rotation is electrically performed by pressing a key.

The disadvantage of the type key mechanism over the crank or manual wheel is that the operator cannot directly perceive the operation of the machine via the type key. In addition, when switching from forward to reverse rotation (or vice versa) or when switching between start and stop, the operator's own reaction time is quite long and variable, making it difficult to stop the machine precisely at the desired position. There was also the problem that the correction key had to be pressed many times in order to do so. On the other hand, the advantage of the type key mechanism is that it does not require much effort on the part of the operator since the machine is driven by a motor.

Earlier West German patent application filed by the same applicant as the present application
P2724135.6 (corresponding to Japanese Patent No. 1112307) aims to eliminate the advantages of manual wheels or hand cranks (i.e. mechanical (The rotation angle of the rotating part of the manual wheel should correspond directly to the rotation angle of the manual wheel) as well as the type and type.
The object was to provide a device that also has the advantages of a keyed machine.

Therefore, in the above-mentioned prior application, the following measures were taken to achieve the objective. That is, the manual input shaft is connected to the manual input shaft through a three-shaft differential gear mechanism consisting of a manual input shaft having a manual wheel, a drive shaft connected to the rotary drive part of the machine, and a lock disk whose rotation is controlled by a lock pin. and the drive shaft of the machine are interconnected, in which case the locking disc is fixed for adjustment, while two switches rotating with the manual wheel are actuated according to the direction of rotation of the manual wheel. It was designed to control the direction of rotation when the machine slowly rotates at creep speed. However, in order to connect the rotating switch to the electric control mechanism of the machine, the operation of the switch must be controlled via a slip ring installed on the rotating shaft of a brake plate or the like that is indirectly connected to a manual wheel or the like. Although removal was necessary, such slip rings were often the cause of failure.

[Problem that the invention seeks to solve]

Therefore, the object of the present invention is to
P2724135.6 (corresponding to Japanese Patent No. 1112307) aims to take advantage of the advantages of the device disclosed and at the same time eliminate the need for slip rings.

[Means for solving problems]

The above object includes: a drive shaft rotatably supported by a frame of an electric offset rotary printing press and coupled to at least one drive gear connected to a drive part of the plate cylinder; A planetary gear type differential gear mechanism is provided between the manual input shaft and the manual input shaft consisting of a sleeve with a manual wheel attached to one end and a gear coaxially attached to the other end, and a carrier for the planetary gear. A large number of lock grooves are provided on the outer periphery of the printing press so that it can be used as both a planetary gear carrier and a lock disk. , a driving means for displacing the bell crank between the two end points of movement, and a driving means provided in connection with the bell crank and engaging the lock groove of the lock disk when the bell crank is displaced to one end point of movement. a control lever equipped with a locking pin that releases the engagement when the two presses are engaged and displaced to the other end of movement, and two switches that rotate the motor of the printing press forward and reverse at a predetermined creep rotation speed. and a brake means for applying a desired braking force to the sleeve at least while the drive shaft is rotating at high speed, and the lock pin is engaged with the lock groove by actuating the drive means. When the above-mentioned manual wheel is rotated in this state, the above-mentioned lock and
The control lever and the switch are arranged so that the control lever is displaced to one of the end points of the movement in response to the displacement of the lock pin in response to the rotation of the disk, and one of the switches is operated in response to the displacement of the control lever. This can be achieved by a device for manually adjusting and rotating the rotational angle position of a cylinder portion of an electric offset rotary printing press, characterized in that:

The differential gear mechanism is a triaxial gear consisting of a drive shaft, a manual input shaft, a planetary gear carrier serving as a third control input shaft, and a planetary gear that transmits rotation between them. It is a mechanism.

In the above device, the control lever is pivotably mounted on the bellcrank by a locking pin, the bellcrank is pivotable about an axis parallel to the axis of rotation of the lock disk, and the control lever It is recommended that when the drive means of the crank is actuated, the locking pin, together with the stop pin and the control lever, is arranged to move in a substantially radial direction of the locking disc into engagement with its locking groove.

It is also recommended that the driving means for the bell crank be an electromagnet, and the bell crank may move the lock pin toward and away from the lock disk by the action of the electromagnet and a tension spring.

It is recommended that the switch be mounted on the bellcrank and that the control lever be provided with a control projection for actuating each of the two switches.

Furthermore, it is recommended that the braking means consist of a brake disc fixed on the sleeve and a spring-loaded brake pad mounted on the frame side.

[Effect]

With the above configuration, the switch does not need to be rotated together with the manual wheel, etc., and can be installed on the frame side separated from these rotating shafts.
This eliminates the need for costly slip rings, reduces the number of causes of failure, and provides the same advantages as the invention related to the earlier West German patent application.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of the device according to the present invention, FIG. 2 is an axial sectional view of the device shown in FIG. 1, and FIG. 3 is a right side view of the device shown in FIG. 1. (However, a part of the manual wheel is cut away.) FIG. 4 is a vertical sectional view taken along the axis 14 in FIG. 1.

A bearing sleeve 41 is provided on the frame 50 of the offset rotary printing press, and the drive shaft 4 is held therein via roller bearings 40, 40'. On this drive shaft 4 are drive gears 1 and 2.
It is keyed via a taper pin or adjustment spring. The gears 1 and 2 are connected to a rotating part (cylinder part) such as a plate cylinder of a printing press, so that the drive shaft 4 rotates together with the rotating part of the printing press.

A sleeve 10 is rotatably mounted on the outer periphery of the drive shaft 4 via a needle bearing 51 and a ball bearing 52, and a manual wheel 13 is attached to the left end of the sleeve 10. Manual wheel 13 and sleeve 10 are pinned together.

A gear 12 is screwed to the flange portion of the right end of the sleeve 10 in FIG. 2.

As described above, the sleeve is rotatably mounted on the drive shaft 4 connected to the rotating part of the printing press via the drive gears 1 and 2, and the manual wheel 13 and the gear 12 are respectively fixed to both ends of the sleeve. 10 is a manual input shaft of the planetary gear mechanism described below.

The planetary gears 6 and 7 are thus fixed to a common rotatable planetary gear shaft 8, which shaft 8 is attached to a planetary gear carrier configured as a lock disk 5, which in turn is connected to a lock disk 5.
is rotatably mounted on the drive shaft 4 via a roller bearing 35, and the planetary gear 7 is connected to the gear 1.
2, the planet gear 6 transmits rotation to the toothing 3 formed on the drive shaft 4 via an intermediate gear 9 rotatably mounted on the lock disk 5 or planet gear carrier.

Although only one set of the planetary gears 6, 7, their shaft 8, and intermediate gear 9 are shown in the figure, three or more sets are actually provided.

A brake disc 11 is also screwed onto the flange of the sleeve 10.

On the other hand, as shown in FIGS. 1 and 3, a fixed shaft 14 is provided on the frame 50 near the periphery of the lock disk 5 and parallel to the drive shaft 4.
A lever 15 is provided near the tip of the fixed shaft 14 so as to be rotatable with respect to the fixed shaft 14, and a brake pad 16 is attached to the tip of the lever 15, and is arranged so as to come into contact with the outer periphery of the brake disc 11. be. The lever 15 is connected to the brake pad 16 by a torsion spring 17.
1 with constant pressure. One end of this torsion spring is supported indirectly or directly on the frame 50 by appropriate means.

Furthermore, a bell crank 18 is pivotably mounted on the shaft 14, and a control lever 27 is also pivotably attached to the bell crank 18 by means of a stop pin 26.

Therefore, at one end of the bell crank 18, an L
A mold coupling member 21 is pivotally mounted and is connected to the rod of an electromagnet 22.
Note that the electromagnet 22 is fixed on the frame 50. A tension spring 25 is attached to the other end of the bell crank 18, and when the electromagnet 22 is not energized, the L-shaped connecting member 21 is pulled away from the electromagnet 22 by the action of the tension spring 25.

Approximately in the center of the vertical legs of the bell crank 18 extending in the vertical direction in FIG.
The above-mentioned stop pin 26 is mounted as far away as possible from the above-described pin 26, and this pin pivotally supports an L-shaped control lever 27.

The L-shaped control lever 27 has a V-shaped notch 42 at the upper end of its vertical leg, into which the lock roll 30 engages. This lock roll 30 is attached to a pivot lever 43 provided via a shaft 44 on the vertical leg of the bell crank 18, and is attached to a tension spring 3.
1 to be drawn toward the V-shaped notch 42. In addition, the above tension spring 3
1 is stretched between the free end of the pivot lever 43 and the stop pin 26. Therefore, the lock roll 30 is engaged with the V-shaped notch 42 by the elastic force of the spring, and the control lever 27 is held in the central position shown in FIG. 1 or 3 unless a special external force is applied. is maintained.

The lower end of the vertical leg of the bell crank 18 is provided with a protrusion 45 that protrudes laterally and is bent into a U-shape, and this is attached to the upper surface of the bent end of the L-shaped control lever 27. Let's face it. Two switches 19 and 20 are attached to the protrusion 45,
The tentacles of the switch cause the control lever 27 to move when the control lever 27 pivots (this will be explained later).
It is placed in contact with the upper control projection 28 or 29.

A lock pin 32 is provided on the vertical portion of the control lever 27 at an intermediate position between the stop pin 26 and the V-shaped notch 42.
As shown in FIG.
6 and protrudes to the position of the lock disk 5. The base of the locking pin 32 is fixed near the longitudinal edge of the vertical part of the control lever 27 on the side of the locking disk 5, so that the rod of the electromagnet 22 is drawn into the electromagnet, and the bellcrank 18 resists the force of the tension spring 25. When the lock pin 32 rotates counterclockwise in FIG. 1, the lock pin 32 fits into a lock groove 33 around the lock disk 5 and prevents the lock disk 5 from rotating. As mentioned above, this lock disk 5 also serves as a carrier for the planetary gears 6 and 7.

The operation of the above-described apparatus according to the present invention will now be described.

When the printing press is operated at high speed by a motor (not shown) for printing, the electromagnet 22 is not energized and the tension spring 25 is connected to the bell crank 18.
As shown in FIG. 1, the lock pin 32 is out of the lock groove 33, and the lock disk 5 is rotatable.

At this time, the drive gears 1 and 2 and the drive shaft 4 rotate at the normal high rotational speed during printing, while the manual wheel 1
3 is kept stationary by the action of the brake disc 11 pressed by the brake pad 16, so the rotation of the drive shaft 4 causes the planetary gear 6 to move through the toothed portion 3 formed on its side surface and the intermediate gear 9. and 7 are rotated, only the lock disk 5 is rotated, and the rotation of the drive shaft 4 is not transmitted to the manual wheel 13 at all.

If the manual wheel 13 is rotated in this state against the braking action of the brake disc 11,
The gear 12 rotates, so that the lock disk 5 carrying the planetary gears 6, 7, etc. rotates at a speed determined by the rotational speed difference between the drive shaft 4 and the manual wheel 13. That is, when the manual wheel 13 is rotated against the braking force of the brake pad 16 during high-speed rotation of the printing press motor, the rotation speed of the lock disk 5 (planetary gear carrier) changes, but the rotation speed of the drive gears 1 and 2 changes. And there is no influence on the rotation speed of the drive shaft 4.

On the other hand, even if the power to the printing press motor is completely cut off and the machine is completely stopped, the electromagnet 2
If 2 is not energized, bell crank 1
8 is in the same position as in the previous case, and the lock pin 32 is out of the lock groove 33 of the lock disk 5. When the printing press is completely stopped, the driving gears 1 and 2 and the driving shaft 4 as well as its rotating parts are too heavy and stationary to be moved manually.

Therefore, even if the manual wheel 13 is rotated against the braking force of the brake pad 16 in this state, the lock disk 5 will only idle through the gear 12 fixed to the sleeve 10 and the planetary gear 7. As a result, the drive gears 1, 2 and the drive shaft 4 are not rotated.

Therefore, when it is necessary to adjust the printing press for plate replacement, fixing, coloring, cleaning, test printing, or inspection, please do not turn off the power to the machine and follow the instructions below. switch 19 and 2
0 is closed, various switches such as the power supply circuit of the motor are set so that rotating parts such as the plate cylinder of the machine rotate at a gentle creep speed instead of the high-speed rotation drive during normal printing. Switch in advance. Then, at the same time, the electromagnet 22 is energized to draw the rod into the electromagnet, and the bell crank 18 is moved to the drive gears 1 and 2 in FIG.
Rotate counterclockwise toward the camera. In such a case, the control lever 2 connected to the bell crank 18
A locking pin 32 mounted at 7 engages into a locking groove 33 of the locking disk 5. Therefore, the lock disk 5 can only rotate within a small range around the drive shaft 4. That is, when the lock pin 32 is engaged with the lock groove 33 of the lock disk 5, the rotation of the manual wheel 13 is caused by the lock pin 3 in the notch 46 of the bell crank 18.
This is possible only within the play of 2. (However, as will be described later, if an overload of more than a certain value is applied to the manual wheel 13, the lock pin 32 will slide into the lock groove 3.
3, which prevents damage due to overload. ) In the above state, the lock roll 30 is drawn into the V-shaped notch 42 of the control lever 27 by the action of the tension spring 31.

In this state, when the manual wheel 13 is rotated while resisting the braking force of the brake pad 16, at the initial stage when both switches 19 and 20 are in a non-conducting state, the printing press motor is completely turned off. Since it is not driven and the drive shaft 4 is stationary, the lock disk 5 rotates due to the action of the planetary gears 6 and 7. At this time, the lock disk 5 rotates in the opposite direction to the rotation direction of the manual wheel 13. , the lock pin 32 is moved substantially tangentially to the outer circumference of the lock disk 5. In that case, the attachment point of the lock pin 32 is the stop pin 2 relative to the bell crank 18.
6, the rotation of the lock disk 5 causes the control lever 2 to move against the action of the spring-loaded lock roll 30.
7 is rotated around the locking pin 26. Therefore, it is turned in the same direction as the rotational direction of the manual wheel 13, thereby actuating either the switch 19 or 20 provided close to the control protrusions 28, 29 at the lower end of the control lever 27. Make it conductive. In such a case, the motor of the printing press is rotated slowly at a predetermined slow creep speed, and the rotation direction is opposite to each other depending on whether switch 19 or 20 is turned on. Based on this, the drive shaft 4 is slowly rotated through the drive gears 1 and 2 in a predetermined direction corresponding to the rotational direction of the motor.

In addition to the drive gears 1 and 2 attached to the drive shaft 4, the tooth portion 3 is also formed, so that when the drive shaft 4 rotates as described above, the intermediate gear 9 meshed with the drive shaft 4 rotates. The planetary gears 6, 7 are rotated through the planetary gears, and the lock disk serving as the planetary gear carrier is also slowly rotated.

When the rotation of the manual wheel 13 is stopped in this state, the rotation of the lock disk 5 with the rotation of the drive shaft 4 causes the lock disk 5 to rotate against the lock pin 32.
pressure is removed. In such a case, the control lever 27
is returned to the central position by the spring action of the lock roll 30, whereby the switch 19 or 20, which had been in the conducting state, becomes non-conducting again. In such a case, the motor of the printing press stops, and at the same time, the rotating parts (cylinder section) of the machine such as the plate cylinder also stop, and at the same time, the rotation of the drive shaft 4 also stops.

Therefore, by continuing to rotate the manual wheel 13 slowly, a continuous adjustment movement can be performed. If the gear ratios of the planetary gears 6, 7, gears 3, 12, etc. are appropriately selected, the rotation angle of the manual wheel 13 during adjustment will be the same as the rotation angle of a predetermined rotating part of the printing press, such as the plate cylinder. This provides a direct correspondence between the movement of the manual wheel and the rotating parts of the printing press, so that during operation of the manual wheel the operator can This makes the adjustment work easier, giving the user the feeling that they are directly adjusting the rotating parts of the printing press.

After the motor is driven during the above adjustment, manual wheel 1
3 is rotated at a speed lower than the creep rotation speed of the printing press, the rotation of the lock disk 5 accompanying the rotation of the drive shaft 4 precedes the rotation of the manual wheel 13, and the pressure of the lock disk 5 against the lock pin 32 increases. the control lever 27 is locked and rolled 30.
The switch 19 or 20 returns to the central position due to the action of the spring, and as a result, the switch 19 or 20, which had been in the conducting state, becomes non-conducting again, and the printing press motor temporarily stops, and the rotation of the manual wheel 13 causes the lock disc 5 to open again. Control lever 27 is pivoted via rotating lock pin 32 to switch 19 or 20.
The stopped state continues until conduction occurs.

On the contrary, the manual wheel 13 is rotated faster than the above creep rotation speed.
When the manual wheel is rotated and an overload occurs on the manual wheel, the locking pin 32 rotates the bellcrank 18 clockwise against the attractive action of the electromagnet 22.
It comes off from the locking groove 33 of the disc 5, so that the manual wheel 13 can freely rotate without being overloaded.

Switches 23 and 2 fixed on the frame 50
4 (see Figures 1 and 3) is bell crank 1
It is in contact with the outer end of the horizontal portion of the bell crank 18, and is used to control various operating states of the machine according to the movement of the bell crank 18.

In this way, when the manual wheel 13 is rotated during adjustment, either the switch 19 or 20 becomes conductive and the motor of the printing press is driven, and the drive shaft 4 is slowly rotated at the creep rotation speed. In order to take out the conductive signals of switches 19 and 20 in which mechanical adjustments can be made, these switches must be connected to sleeve 1.
Since it is attached to the bell crank 18 on the frame 50 rather than on the zero or other rotation axis, a slip ring is not required.

〔Effect of the invention〕

Since the present invention is constructed as described above, according to the present invention, there is no need for an expensive slip ring, there are few causes of failure, and moreover, during rotation operation of the manual wheel, the rotation angle is the same as that of the manual wheel. It is possible to provide a device that allows a motor to rotate a rotary part such as a plate cylinder of a printing press at an angle.

It should be noted that the present invention is not limited to the above embodiments, but includes all modified embodiments that can be easily conceived by a person skilled in the art from the above description and drawings within the scope of the purpose of the present invention. It is.

[Brief explanation of the drawing]

1 is a perspective view showing an embodiment of the device according to the present invention, FIG. 2 is an axial sectional view of the device shown in FIG. 1, and FIG. 3 is a right side view of the device shown in FIG. 1. side view,
FIG. 4 is a vertical cross-sectional view along axis 14 in FIG. 1, 2... Drive gear, 3... Teeth, 4... Shaft,
5... Lock disk, 6,7... Planetary gear,
8... Planetary gear shaft, 9... Intermediate gear, 10... Sleeve, 11... Brake disc, 12... Gear, 13... Manual wheel, 14... Fixed shaft, 15...
Lever, 16... Brake pad, 17... Torsion spring, 18... Bell crank, 19, 20...
Switch, 21... L-type connecting member, 22... Electromagnet, 23, 24... Switch, 25... Tension spring, 26... Stopping pin, 27... Control lever, 2
8, 29... Control protrusion, 30... Lock roll, 31... Tension spring, 32... Lock pin,
33... Lock groove, 35, 40, 40'... Roller bearing, 41... Bearing sleeve, 4
2...V-shaped notch, 43...Swivel lever, 44
... shaft, 45 ... protrusion, 46 ... notch, 50
... Frame, 51 ... Needle bearing,
52...Ball bearing.

Claims (1)

[Claims] 1. Frame 50 of an electric offset rotary printing press
A drive shaft 4 is rotatably supported on the drive shaft 4 and coupled to at least one drive gear 1, 2 connected to the drive section of the plate cylinder; A planetary gear type differential gear mechanism is provided between a manual wheel 13 and a manual input shaft consisting of a sleeve 10 with a gear 12 coaxially attached to the other end, and a planetary gear type differential gear mechanism is provided on the outer periphery of the carrier 5 of the planetary gear. is provided with a large number of lock grooves 33 so that it can be used both as a planetary gear carrier and as a lock disk, and the frame 50 of the printing press is equipped with a bell crank 18 that can be displaced between two different end points of movement.
and a driving means 22 for displacing the bell crank 18 between the two end points of movement, and a driving means 22 provided in connection with the bell crank 18, and driving means 22 for driving the lock disk 5 when the bell crank 18 is displaced to one end point of movement. a control lever 27 having a lock pin 32 that engages with a lock groove 33 of the printer and releases the engagement when the printer is displaced to the other end of movement; and two switches 19 and 20 for rotating and reversing the rotation, and a brake means for applying a desired braking force to the sleeve 10 at least while the drive shaft 4 is rotating at high speed, and actuating the drive means 22. When the manual wheel 13 is rotated with the lock pin 32 engaged with the lock groove 33, the lock pin 32 is displaced in accordance with the accompanying rotation of the lock disk 5. control lever 2
7 is displaced to one of the end points of movement, and the switches 19 and 2 are moved in accordance with the displacement of the control lever 27.
1. A device for manually adjusting and rotating the rotational angle position of a cylinder portion of an electric offset rotary printing press, characterized in that the control lever 27 and the switches 19, 20 are arranged so that one of the two switches is activated. 2. The control lever 27 is pivotably mounted on the bellcrank 18 by a stop pin 26, and the bellcrank 18 is attached to the lock disk 5.
When the drive means 22 of the bell crank 18 is actuated, the lock pin 32, together with the stop pin 26 and the control lever 27, rotates around the lock disk. 5. The device according to claim 1, wherein the device is arranged to move in a substantially radial direction of the lock groove and engage the lock groove 33 of the lock groove. 3 The driving means for the bell crank 18 is the electromagnet 2.
2. The device according to claim 2, wherein said bellcrank moves the lock pin 32 toward and away from the lock disk 5 by the action of the electromagnet 22 and the tension spring 25. 4 Connect the above switches 19 and 20 to the bell crank 18.
Apparatus according to any one of claims 1, 2 or 3 appended hereto. 5 The control lever 27 is connected to the two switches 1
a control projection 28 for actuating each of 9 and 20;
Apparatus according to any one of claims 1, 2, 3 or 4 having 29. 6 The braking means comprises a brake disc 11 fixed on the sleeve 10 and a frame 5.
Claims 1 and 2 consist of a spring-biased brake pad 16 provided on the 0 side.
The device according to any one of paragraphs 3, 4, and 5.