EP0351899B1 - Device for the total emptying of large-size ink containers having a low degree of flowability - Google Patents
Device for the total emptying of large-size ink containers having a low degree of flowability Download PDFInfo
- Publication number
- EP0351899B1 EP0351899B1 EP89201477A EP89201477A EP0351899B1 EP 0351899 B1 EP0351899 B1 EP 0351899B1 EP 89201477 A EP89201477 A EP 89201477A EP 89201477 A EP89201477 A EP 89201477A EP 0351899 B1 EP0351899 B1 EP 0351899B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lateral wall
- container
- pressing plate
- gasket
- concave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0227—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants by an ejection plunger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/58—Arrangements of pumps
- B67D7/62—Arrangements of pumps power operated
- B67D7/64—Arrangements of pumps power operated of piston type
- B67D7/645—Barrel pumps
Definitions
- the present invention relates to a device for the total emptying of large-size containers for ink having a low degree of flowability.
- Modern ink used in super-fast heat-set reel printing machines is notoriously characterized by a high degree of thixotropy and thus by extremely low qualities of flowability.
- the system includes a piston pump operated by compressed air inserted directly from above into the container and integrally connected to a pressing plate forming a perfect airtight seal.
- the plate has the function of scraping the walls of the container perfectly and promoting with its descent the feeding of the ink to the pump's intake mouth.
- US-A-4632281 discloses a fluid dispensing system according to the preamble of claim 1.
- EP-A-0227232 discloses a system for feeding ink from ink containers, which includes suction pumps and follower plates which move down the tanks as ink is consumed.
- the concavity of the pressing plate's lateral wall is of a circular shape, and the annular gasket is stressed against the container's inner wall and in spaced relationship with the lateral wall of the container at both its end lips.
- the gasket is accomplished in flexible PVC.
- the gasket adapts easily to any ovalization of the container, it has a high adherence to the container's inner wall and, at the same time, it creates limited friction, which does not hamper the descent of the plate.
- An appropriate size also ensures the pressing plate's unsinkability.
- a further feature of the present invention is represented by the fact that the pressing plate is provided with a guide tube which extends axially upwards from the centre of the plate and slidably engages the top of the container.
- the pressing plate can maintain itself constantly horizontal during its downward stroke.
- the suction pump associated with the bottom of the container, below the pressing plate, provides for ink delivering and further assists in the descent of the pressing plate even in the case of some slight oozing of ink through the gasket's engagement area.
- Fig. 1 shows a container 1, having a cylindrical lateral wall 2, a top wall 3 provided with a feed opening 4 having an openable cover 5, and a bottom wall 6 having a supply hole 7.
- a conduit 8 which a flexible union 9 connects to the inlet of a piston pump 10 operated by a motor 11 and provided with an outlet conduit 12.
- a pressing plate 13 Inside the container 1 there is slidably housed a pressing plate 13, with a lateral wall having circular concavity 14 (Fig. 2), wherein a flexible gasket in PVC 15 is inserted in the form of a cylindrical ribbon.
- the gasket 15 is held by a clamp 16, which in combination with the above concavity confers on the gasket a corresponding concave shape which determines the friction contact between the gasket and the container's lateral wall only at two extreme lips 17 and 18.
- the pressing plate is provided with a hole 24 with a vent valve 25 (Fig. 2).
- the pressing plate 13 pushes the underlying ink contained in the container 1 towards the supply hole 7.
- the ink is sucked up by the piston pump 10 and sent to the outlet conduit 12.
- the gasket 15 is airtight with the container' s lateral wall 2 at the lips 17 and 18, thus limiting friction with the above wall 2.
- the tube 21 together with the guide hole 22 ensures the constant horizontal disposition of the plate 13 during its descent.
- the venting hole 24 with the valve 25 allows the air to be vented from under the plate 13 when required.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Coating Apparatus (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
Abstract
Description
- The present invention relates to a device for the total emptying of large-size containers for ink having a low degree of flowability.
- Modern ink used in super-fast heat-set reel printing machines is notoriously characterized by a high degree of thixotropy and thus by extremely low qualities of flowability.
- There has been in use for some time a valid system for feeding the ink fountains of printing machines when the ink is packaged in 200 kg containers having total opening.
- The system includes a piston pump operated by compressed air inserted directly from above into the container and integrally connected to a pressing plate forming a perfect airtight seal. The plate has the function of scraping the walls of the container perfectly and promoting with its descent the feeding of the ink to the pump's intake mouth.
- The problem started when 1000 kg containers began to be used instead of the 200 kg size. In fact, with these containers, different requirements had to be met such as:
- a) a high adherence to the container's inner walls;
- b) a highly flexible gasket to adapt to the inevitable ovalization of the container's wall;
- c) the lowest possible friction between gasket and container so as not to hamper the plate's descent;
- d) a gasket of a materail able to resist chemically;
- e) a non-sinkable plate;
- f) the descent of the plate to be executed in a constantly horizontal manner.
- US-A-4632281 discloses a fluid dispensing system according to the preamble of
claim 1. - Emptying devices are also known from US-A-4534493, US-A-4632281 and US-A-4635820, in which complicated mechanisms are provided to cause descent of the pressing plate and ink delivering.
- EP-A-0227232 discloses a system for feeding ink from ink containers, which includes suction pumps and follower plates which move down the tanks as ink is consumed.
- According to the invention and emptying device has been accomplished for large-size containers, having the construction defined in
claim 1. - Preferably, the concavity of the pressing plate's lateral wall is of a circular shape, and the annular gasket is stressed against the container's inner wall and in spaced relationship with the lateral wall of the container at both its end lips.
- Still preferably, the gasket is accomplished in flexible PVC.
- In the claimed device the gasket adapts easily to any ovalization of the container, it has a high adherence to the container's inner wall and, at the same time, it creates limited friction, which does not hamper the descent of the plate. An appropriate size also ensures the pressing plate's unsinkability.
- A further feature of the present invention is represented by the fact that the pressing plate is provided with a guide tube which extends axially upwards from the centre of the plate and slidably engages the top of the container.
- In this way the pressing plate can maintain itself constantly horizontal during its downward stroke.
- The suction pump associated with the bottom of the container, below the pressing plate, provides for ink delivering and further assists in the descent of the pressing plate even in the case of some slight oozing of ink through the gasket's engagement area.
- An example of an embodiment of the present invention is illustrated for greater clarity, out with no limiting intention, in the enclosed drawings, wherein:
- Fig. 1 shows schematically, partly as a view and partly in cross-section, a large-size container provided with an emptying device according to the invention;
- Fig. 2 shows the enlarged detail of the pressing plate and its corresponding gasket, of which said emptying device is constituted.
- Fig. 1 shows a
container 1, having a cylindricallateral wall 2, atop wall 3 provided with afeed opening 4 having anopenable cover 5, and abottom wall 6 having asupply hole 7. - From the
supply hole 7 there extends laterally a conduit 8, which a flexible union 9 connects to the inlet of apiston pump 10 operated by amotor 11 and provided with anoutlet conduit 12. - Inside the
container 1 there is slidably housed apressing plate 13, with a lateral wall having circular concavity 14 (Fig. 2), wherein a flexible gasket inPVC 15 is inserted in the form of a cylindrical ribbon. Thegasket 15 is held by aclamp 16, which in combination with the above concavity confers on the gasket a corresponding concave shape which determines the friction contact between the gasket and the container's lateral wall only at twoextreme lips - At the centre of the
pressing plate 13 there is welded and strengthened with gussets 19 a receivingopening 20 for avertical tube 21, which extends upwards and passes slidably through the feed opening 4 and alower guide hole 22 in the plate 23 (Fig. 1). - Lastly the pressing plate is provided with a
hole 24 with a vent valve 25 (Fig. 2). - During operations, the
pressing plate 13 pushes the underlying ink contained in thecontainer 1 towards thesupply hole 7. The ink is sucked up by thepiston pump 10 and sent to theoutlet conduit 12. - The
gasket 15 is airtight with the container' slateral wall 2 at thelips above wall 2. Thetube 21 together with theguide hole 22 ensures the constant horizontal disposition of theplate 13 during its descent. Theventing hole 24 with thevalve 25 allows the air to be vented from under theplate 13 when required.
Claims (4)
- An emptying device for the total emptying of large-size containers for ink having a low degree of flowability, including a pressing plate (13) sliding vertically inside the container (1) and provided with a concave lateral wall (14) and an annular gasket (15) surrounding said pressing plate (13) and having a corresponding concave cross-section shape with a central portion held against such concave lateral wall (14) of the pressing plate (13) and two end lips (17, 18), at least a lower one of which is in friction and sealing contact with a lateral wall (2) of the container, characterized in that it also includes a suction pump (10) interposed between the container's bottom (6) and an outlet conduit (12), and said lower end lip (17) of the annular gasket (15) is resiliently stressed against said lateral wall (2) of the container (1) and in spaced relationship with respect to said concave lateral wall (14) of the pressing plate (13).
- Device according to claim 1, characterized in that said gasket (15) is of PVC.
- Device according to claim 1, characterized in that said concave lateral wall (14) of the pressing plate (13) has circular concavity and that said gasket (15) is held inside it so as to be stressed against the container's lateral wall (2) and in spaced relationship with the lateral wall (14) of the pressing plate (13) at its end lower (17) and upper (18) lips.
- Device according to claim 1, characterized in that said pressing plate (13) is provided with a guide tube (21), which extends vertically upwards from the centre of the plate and slidably engages with a guide hole (22) on the top of the container.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2144988 | 1988-07-22 | ||
IT8821449A IT1227418B (en) | 1988-07-22 | 1988-07-22 | DEVICE FOR THE TOTAL EMPTYING OF LARGE-SIZED CONTAINERS FOR LOW-SLIDING INK. |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0351899A2 EP0351899A2 (en) | 1990-01-24 |
EP0351899A3 EP0351899A3 (en) | 1991-01-02 |
EP0351899B1 true EP0351899B1 (en) | 1994-09-28 |
Family
ID=11181948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89201477A Expired - Lifetime EP0351899B1 (en) | 1988-07-22 | 1989-06-08 | Device for the total emptying of large-size ink containers having a low degree of flowability |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0351899B1 (en) |
AT (1) | ATE112212T1 (en) |
DE (1) | DE68918520T2 (en) |
IT (1) | IT1227418B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009047862A1 (en) * | 2009-09-30 | 2011-04-07 | Technotrans Ag | 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 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5265773A (en) * | 1991-05-24 | 1993-11-30 | Kabushiki Kaisha Marukomu | Paste feeding apparatus |
JP3345653B2 (en) * | 1993-05-12 | 2002-11-18 | 谷電機工業株式会社 | Screen plate cleaning device |
FR2749835B1 (en) * | 1996-06-12 | 1998-10-23 | Total Raffinage Distribution | DEVICE FOR FULL STORAGE AND DEPOSITION OF GREASE |
DE19731601A1 (en) * | 1997-07-18 | 1999-01-21 | Schmidt Gebr Druckfarben | Arrangement for scheduling highly viscous media |
EP1052217A1 (en) * | 1999-05-05 | 2000-11-15 | Eftec Ag | Venting device for containers with follower plate |
DE202004009185U1 (en) * | 2004-06-11 | 2005-10-27 | Nordson Corp., Westlake | Device for discharging liquid media from containers |
DE102010062797A1 (en) * | 2010-12-10 | 2012-06-14 | Krones Aktiengesellschaft | Method and device for aseptic filling |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0227232A2 (en) * | 1985-10-30 | 1987-07-01 | Automation, Inc. | Ink monitor system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3838864A (en) * | 1972-10-24 | 1974-10-01 | Baldwin Gegenheimer Corp | Mechanism for removing ink from ink containers |
US4534493A (en) * | 1983-08-03 | 1985-08-13 | National Starch And Chemical Corporation | Apparatus for dispensing high viscosity thermoplastic materials |
US4632281A (en) * | 1984-03-29 | 1986-12-30 | Johnstone Pump Company | Magnadrum pump assembly |
US4635820A (en) * | 1986-01-09 | 1987-01-13 | Slautterback Corporation | Bulk unloader of solidified thermoplastic material from pails and drums |
-
1988
- 1988-07-22 IT IT8821449A patent/IT1227418B/en active
-
1989
- 1989-06-08 DE DE68918520T patent/DE68918520T2/en not_active Expired - Fee Related
- 1989-06-08 AT AT89201477T patent/ATE112212T1/en not_active IP Right Cessation
- 1989-06-08 EP EP89201477A patent/EP0351899B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0227232A2 (en) * | 1985-10-30 | 1987-07-01 | Automation, Inc. | Ink monitor system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009047862A1 (en) * | 2009-09-30 | 2011-04-07 | Technotrans Ag | 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 |
Also Published As
Publication number | Publication date |
---|---|
IT8821449A0 (en) | 1988-07-22 |
EP0351899A2 (en) | 1990-01-24 |
IT1227418B (en) | 1991-04-09 |
DE68918520D1 (en) | 1994-11-03 |
EP0351899A3 (en) | 1991-01-02 |
ATE112212T1 (en) | 1994-10-15 |
DE68918520T2 (en) | 1995-02-23 |
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