DE102009047862A1 - Ink conveyor system i.e. drum pump, for conveying printing ink to printing machine, has ink pump with suction element connected with interior of ink container, and ink leveling unit for leveling ink level in area of suction element - Google Patents

Abstract

The system (10) has an ink pump (11) with a suction element (12) connected with an interior of an ink container (20), and an ink leveling unit for leveling the ink level in an area of the suction element. A follow-up plate (13) is movable relative to an interior of the container and arranged transverse to a direction of change in the ink level, where the follow-up plate is adapted to the ink level in the container. The ink leveling unit has a follow-up plate drive (14) that stands in a drive connection with the follow-up plate. An independent claim is also included for a method for conveying ink.

Description

The invention relates to a dye delivery system, in particular a drum pump, and a method for conveying highly viscous media.

On printing presses, the individual printing units are supplied in part via color conveying systems with printing ink. It can be fed via a pump color from a color container the individual printing units. Drum pumps are sometimes used on printing presses that require a large amount of ink. The paint is provided in a barrel and pumped via the drum pump to the printing units.

In the case of high-viscosity paints, it is sometimes difficult to pump the paint out of the barrel because the paint in the barrel does not form a flat surface, so that the paint can only be sucked in poorly.

It is therefore an object of the present invention to provide a conveyor system which can reliably convey even high-viscosity paints.

This object is achieved by the apparatus and method of the independent claims.

A first aspect of the solution relates to a color conveying system for conveying ink to a printing machine comprising a paint pump with a suction element, which can be brought into connection with the interior of a paint container, and a color leveling means for leveling the color level in the region of the suction element.

Such a color conveying system can be formed without the ink container and be designed so that a color-containing ink container is provided on the dye delivery system in the operation of the dye delivery system such that the ink pump from the ink container can promote color. It is also conceivable that the ink container is formed as part of the dye delivery system. In this case, the ink container may be formed as a receiving device of a Farbgebindes or a container of a Farbgebindes themselves be made available as a color container of the dye delivery system. For higher viscosity paints, draining paint from the paint bucket without color leveling agent can result in an uneven color level in the paint bucket. Leveling by the color leveling agent causes equalization of the color level. The color leveling agent may, for. B. be designed so that even when using high-viscosity paints a substantially uniform color level is created or provided by the color leveling agent in the paint container, so that it can be ensured that the suction of the paint pump is constantly in contact with the ink to be sucked. Training of the suction of the paint pump can be prevented. The color leveling agent can make the paint flowable and / or evenly distributed. The creation of a uniform color level can be effected in various ways, as described below, e.g. B. mechanically by generating a relative movement between a wall of the dye delivery system in particular of the ink container and / or a follower plate and the color. Alternatively or additionally, a uniform distribution can be effected by generating vibrations or shaking motions directly in the paint or ink container. Alternatively or supportively, the viscosity of the ink itself can be influenced, eg. By a color-tempering agent, a color-pressure-changing agent, etc. Other embodiments are also conceivable. The color conveyor system may be designed as a barrel pump or comprise a barrel pump.

An embodiment of such a color conveying system may comprise a follower plate which can be adapted to a color level in the color container. In this case, the follower plate to limit the ink container volume piston-like configured to be inserted into the ink container and thus serve as part of a wall for the ink volume in the paint container. Through the follower plate a contact of the color with the atmosphere can be avoided or reduced. The follower plate can z. B. have a substantially flat disc shape. The follower plate may have a cross section which substantially corresponds to the inner cross section of the paint container. In a circular inner cross section of a substantially cylindrical paint container, the follower plate z. B. also be configured circular and have a diameter which is slightly smaller than the circular inner cross-section. Thus, the follower plate can follow a changing color level in the paint container without coming into contact with the wall of the paint container, rubbing on the wall and / or tilt. The follower plate can cover the color. On the follower plate can be arranged on the side of the follower plate, which faces the color, the suction of the paint pump. Thus, the suction can follow together with the follower plate a falling color level in the paint container, so that the suction at each color level can suck paint from the paint container. In this embodiment, a leveling of the color level by the color leveling agent in the region of the suction can be done below the follower plate.

In a further embodiment of such a color conveying system, the follower plate relative to the container interior and across a Direction of a color level change to be movably arranged and the color leveling means may comprise a follower plate drive which is in driving connection with the follower plate and via which a relative movement of the follower plate relative to the container interior across a direction of a color level change can be generated. Relative to the container interior movable denotes a mobility of the follower plate in relation to the color layer, which is covered by the follower plate, so a mobility in addition to the mere mobility in the direction of a color level change. Therefore, a movement caused by the follower plate drive can have at least one movement component which is directed transversely to the direction of a level change of the color in the paint container. The movement of the follower plate can z. B. a centric or eccentric rotational movement, or an oscillating linear movement transverse to the direction of a level change or a combination of such movements. The follower plate can be profiled in order to bring increased shear forces in the paint can and thus contribute more to a leveling of the color level in the paint container.

In still another embodiment of such a color conveying system, the color leveling agent may comprise a color distribution agent and a color distribution agent driver connected to the color distribution means and via which relative movement of the color distribution agent to the container interior and / or the follower plate is producible. A color distribution means may comprise a stirring hook and / or a propeller and / or a stirring disc and / or a similar device. The color leveling agent may have a profiled surface area. The color leveling agent may be disposed on the side of the follower plate which faces the color. The movement along which the color distribution means is drivable may be e.g. B. a centric or eccentric rotational movement, or an oscillating linear movement transverse to the direction of a change in level of the color or a combination of such movements.

According to a further embodiment of such a color conveying system, the color leveling means may comprise a vibrating device which can vibrate the paint and / or the ink container and / or the follower plate and / or the suction element and / or other components of the paint pump. Such a vibrating device can, for. B. may be formed as a vibrating body, which can be introduced into the paint and, for. B. in the manner of a concrete vibrator, vibrations or vibrations can cause directly in the color. It is also conceivable that the entire paint container or a recording device, such. B. a base plate on which a color drum can be placed, can be offset by the vibrator in vibration. In that case the vibrations are transmitted indirectly to the color. By such vibrations can be effected by small movements in the color and due to their inertia, a leveling of the color level. Further, by such vibrations, the tixotropy of the color can be lowered so that the color becomes more flowable.

• – Bereitstellen eines Farbfördersystems mit einer Farbpumpe mit einem Ansaugelement,
• – Bereitstellen eines Farbbehälters mit darin enthaltener Farbe,
• – Inkontaktbringen des Ansaugelements mit der Farbe,
• – Fördern der Farbe mittels der Farbpumpe aus dem Farbbehälter und
• – Nivellieren des Farbniveaus im Farbbehälter.

A second aspect of the solution relates to a method of conveying ink to a printing press comprising the steps

• Providing a color conveying system with a paint pump having a suction element,
• Providing a paint container with paint contained therein,
• Contacting the suction element with the paint,
• - Promote the color by means of the paint pump from the paint container and
• - Leveling the color level in the paint container.

The color conveying system provided according to the method may be a color conveying system as described in the first aspect.

• – mechanisches Verteilen der Farbe im Farbbehälter durch Erzeugen einer Relativbewegung zwischen einem Bauelement des Farbfördersystems im Verhältnis zur Farbe
• – In-Schwingungen-Versetzen der Farbe
• – In-Schwingungen-Versetzen des Farbbehälters und/oder einer Folgeplatte und/oder des Ansaugelements und/oder anderer Bestandteile der Farbpumpe.

In a further development of such a method, the leveling step may comprise one or more of the following steps:

• - Mechanical distribution of the color in the ink container by generating a relative movement between a component of the dye delivery system in relation to the color
• - In-vibration - putting the color
• - In-vibration-displacement of the paint container and / or a follower plate and / or the suction and / or other components of the paint pump.

In the following, individual embodiments will be described in detail by way of example with reference to the figures. In this case, the individual embodiments described have in part features that are not absolutely necessary in order to carry out the claimed subject matter, but which provide desired properties in certain applications. Thus, embodiments are also to be regarded as falling under the technical teaching described in this document, which does not have all the features of the embodiments described below. Further, to avoid unnecessary repetition, certain features will be described only with respect to particular embodiments. It should be noted that the individual embodiments should therefore be considered not only in isolation but also in a synopsis. Based on this In summary, those skilled in the art will recognize that individual embodiments may also be modified by incorporating one or more features of other embodiments. It should be understood that a systematic combination of the individual embodiments with single or multiple features described with respect to other embodiments may be desirable and useful, and therefore should be considered and also understood to be encompassed by the description.

Brief description of the drawings

In the figures shows:

1 a color conveying system according to a first embodiment of the invention,

2 a color conveying system according to a second embodiment of the invention and

3 a color conveying system according to a third embodiment of the invention

Detailed description of the drawings

In 1 is a color conveyor system 10 for promoting color 21 illustrated according to a first embodiment of the invention. In the illustrated embodiment, the color conveying system 10 designed as a barrel pump. This is the color 21 in a paint container 20 provided, which is designed as a barrel. The barrel stands on a cradle 15 of the color conveyor system 10 , which is designed as a base plate of the barrel pump. Next to the barrel is a pump lift 16 with a pump arm 17 arranged. About the pump lift 16 can a paint pump 11 attached to the pump arm 17 fixed, be adjusted in height, leaving a suction 12 the paint pump 11 a color stand in the paint container 20 can follow, leaving the intake 12 , which is designed as a pump tube, constantly in contact with the color 21 in the paint container 20 stands and can remove paint from the paint container.

A follower plate 13 of the color conveyor system 10 is in the paint container 20 arranged. In the illustrated embodiment, the paint container is a substantially cylindrical barrel. The follower plate 13 is a substantially circular, planar plate which, in the illustrated embodiment, has a diameter substantially equal to the inner diameter of the paint container 20 equivalent. The suction element 12 can with the follower plate 13 be connected and can through an opening in the follower plate 13 colour 21 from the paint container 20 remove.

With decreasing color level in the paint container 20 follows the follower plate 13 the color level.

So on the intake 12 Even with higher viscosity paints, enough paint is ready to receive from the paint pump 11 to be sucked, has the illustrated dye delivery system 10 a color leveling agent comprising a follower plate drive 14 Includes the follower plate 13 can put in a rotational movement. In the illustrated embodiment, the follower plate rotates about an axis of rotation which is substantially perpendicular to the follower plate 13 stands and through the center of the follower plate 13 runs. Due to the movement of the follower plate can due to the contact of the follower plate 13 with the color 21 a uniform color level in the paint container 20 be generated. Other movements of the follower plate 13 , such as B. an eccentric rotational movement and / or an oscillating, linear movement of the follower plate 13 transverse to the stroke direction of the pump lift 16 is also possible. In a preferred embodiment, the follower plate 13 on her of color 21 facing side have a profile, so that friction between the follower plate 13 and color 21 is enlarged, so that by the movement of the follower plate 13 the color 21 can be made more uniform.

The color conveyor system 10 which is in 2 is substantially equivalent to the color conveyor system 1 , To avoid repetition, only the differences in relation to 1 described.

In the 2 illustrated embodiment of the dye delivery system 10 has a color leveling agent for leveling the color level in the region of the suction element 12 which is a color distribution agent in the form of a propeller 18 includes, which is below the follower plate 13 is arranged. In the illustrated embodiment, both the follower plate 13 , as well as the propeller 18 over the follower plate drive 14 drivable. Accordingly, the follower plate drive 14 simultaneously in the illustrated embodiment, a color distribution means drive. It is also conceivable that the follower plate drive 14 and the color distribution means drive are formed as two separate components. In the illustrated embodiment is between follower plate drive 14 , Follower plate 13 and propellers 18 provided an unspecified transmission, which ensures that the follower plate 13 and the propeller 18 rotate in opposite directions. It is also conceivable that follow plate 13 and propellers 18 turn in the same direction.

Further conceivable is an embodiment in which only the propeller 18 is driven.

The color conveyor system 10 which is in 3 is substantially equivalent to the color conveyor system 1 , To avoid repetition, only the differences in relation to 1 described.

In 3 includes the color leveling agent in addition to that described above by the follower plate drive 14 drivable follower plate 13 a vibrating device 19 , The vibrating device 19 is formed by a rod-shaped vibrator, which is displaceable in an opening of the follower plate 13 is received and protrudes through the opening in the color. Through the vibrator vibrations can be generated, which are transmitted directly to the color. By such introduced vibrations in the color flow of color can be caused so that below the follower plate 13 set a uniform color level. Due to the displaceability of the vibrator 19 in the follower plate 13 Ensures that vibrations generated by the vibrator are still at a color level on the color 21 can be transferred, which approaches the bottom of the barrel.

In the illustrated embodiment, the follower plate 13 through the follower plate drive 14 in addition to the shaking device 19 introduced vibrations are rotated. It is also conceivable that only a shaking device 19 without a rotatable or otherwise movable follower plate 13 is provided. Instead of the described rod-shaped vibrator, a vibrating device can also vibrate other components of the dye delivery system. For example, a vibrating device 19 directly the follower plate 13 and / or the paint container 20 and / or the suction element 12 and / or other elements of the color conveying system capable of vibrating the color 21 in the paint container 20 transferred to.

In addition to the described embodiments, any other combinations of the described components of the color leveling agent are conceivable.

LIST OF REFERENCE NUMBERS

10

Color conveyor system

11

ink pump

12

suction

13

follower plate

14

Follower plate drive

fifteen

cradle

16

lift pumps

17

Pump arm

18

propeller

19

shaker

20

Paint tank barrel

21

colour

Claims (7)

Color conveyor system ( 10 ) for conveying color ( 21 ) on a printing machine comprising a paint pump ( 11 ) with a suction element ( 12 ), which in conjunction with the interior of a paint container ( 20 ) and a color leveling agent for leveling the color level in the area of the suction element ( 12 ). Color conveyor system ( 10 ) according to claim 1, wherein the color conveying system ( 10 ) a color level in the paint container ( 20 ) customizable follower plate ( 13 ). Color conveyor system ( 10 ) according to claim 2, wherein the follower plate ( 13 ) is movably arranged relative to the container interior and transversely to a direction of a color level change, and the color leveling means is arranged to drive a follower plate ( 14 ), which with the follower plate ( 13 ) is in drive connection and via which a relative movement of the follower plate ( 13 ) relative to the container interior across a direction of a color level change is generated. Color conveyor system ( 10 ) according to any one of the preceding claims, wherein the color-leveling agent is a color-distributing agent ( 18 ) and a color distribution agent drive ( 14 ) associated with the color distribution agent ( 18 ) is connected and via which a relative movement of the color distribution agent to the container interior and / or the follower plate ( 13 ) is producible. Color conveyor system ( 10 ) according to one of the preceding claims, wherein the color-leveling agent comprises a vibrating device ( 19 ), which the color ( 21 ) and / or the paint container ( 20 ) and / or the follower plate ( 13 ) and / or the suction element ( 12 ) and / or other components of the paint pump ( 11 ) in A method of conveying ink to a printing press comprising the steps Providing a color conveying system with a paint pump having a suction element, Providing a paint container with paint contained therein, Contacting the suction element with the paint, - Promote the color by means of the paint pump from the paint container and - Leveling the color level in the paint container. The method of claim 6, wherein the step of leveling comprises one or more of the following steps: - mechanically distributing the color in the ink container by creating a relative movement between a component of the ink delivery system relative to the color - in-phase color shifting - in-vibrations -Setting the paint container and / or a follower plate and / or the suction and / or other components of the paint pump.

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