Method and apparatus for dispensing ink to a printing press

• US 6,067,906 A
• Filed: 08/18/1998
• Issued: 05/30/2000
• Est. Priority Date: 06/10/1997
• Status: Expired due to Fees

• Current Assignee: Walter Stobb Associates Incorporated
• Original Assignee: Walter Stobb Associates Incorporated
• Inventors: Ryan, Garth S., Stobb, Walter J.
• Primary Examiner(s): Hilten, John S.
• Assistant Examiner(s): COLILLA, DANIEL JAMES
• Application Number:
  US09/135,966
• Time in Patent Office: 651 Days
• Field of Search: 101/366, 101/148, 101/483, 101/350.1, 118/24, 118/25, 118/259, 222/95, 222/105, 222/386
• US Class Current: 101/335
• CPC Class Codes: B41F 31/02 Ducts, containers, supply or metering devices
• CPC Class Codes: B41F 31/022 Ink level control devices
• CPC Class Codes: B41F 31/08 with ink ejecting means, e.g. pumps, nozzles

Abstract

A method and apparatus for dispensing ink to an ink fountain of a printing press. A flexible bag of ink is utilized and is compressed for forcing the ink into the fountain, and a sensor determines the level of ink in the fountain and thus controls the force on the bag, that is, the compressor on the bag. The flexible bag of ink is subjected to a compressor, which can be a flexible air-filled bladder which forces against the ink bag to compress the ink therefrom and into an ink fountain.

Claims

1. A method for dispensing ink to a printing press, comprising the steps of

placing ink into a flexible bag which has an outlet spout disposed with an ink flow passageway in position for receiving ink directly thereinto in an outlet flow direction at an end of said bag which has two sides disposed on opposite sides of said spout and parallel to said flow direction,

positioning said bag with a first one of said sides disposed parallel to and adjacent an abutment and in ink-flow communication through said spout and to a printing press,

positioning an air bladder of an endless wall of elastomer material adjacent said bag at a second one of said sides,

inflating said bladder with pressurized air and forcing said wall of said bladder in a direction transverse to said outlet flow direction and into contact with and directly against said second side of said bag and then forcing said bag against said abutment and thereby forcing the ink to flow from said bag in a direction through said spout and to slid printing press, and

sensing the amount of ink flowing from said bag and regulating the inflating of said bladder in accord with the amount of flowing ink.

2. The method for dispensing ink to a printing press as claimed in claim 1, including the steps of

placing said bag and said bladder into a rigid container to surround said bag and said bladder with said container and with said container including said abutment, and

arranging and inflating said bladder to have said bladder force against said bag and said container and thereby have the ink flow from said bag through said spout.

3. The method for dispensing ink to a printing press as claimed in claim 1, including

hanging said bag from an end thereof and in the position to be adjacent to said abutment, and

applying the force of said bladder onto said bag in a direction only transverse to said direction of the flow of ink through said spout.

4. The method for dispensing ink to a printing press as claimed in claim 1, including

suspending said bag in an upright position with said spout in a lowermost position, and

forcing on said bag by said bladder in sequence commencing initially at the portion of said bag most distant from said spout.

5. The method for dispensing ink to a printing press as claimed in claim 1, including

disposing said bag in an inverted position on an upright plane whereby said spout is in the lowermost position relative to the remainder of said bag, and

arranging said spout to be in a position offset to one side of said upright plane and adjacent said first side of said bag, and

applying bladder force only in a direction toward said first side.

6. The method for dispensing ink to a printing press as claimed in claim 1, including

placing said bag and said bladder into a container which includes said abutment and having said bladder and said bag occupy said container in an arrangement whereby said bladder and said bag are restrained by said container when said bladder is inflated with air.

7. The method for dispensing ink to a printing press as claimed in claim 1, wherein,

the forcing of said bladder against said bag is only at a right angle to the direction of the ink moving through said spout.

8. The method for dispensing ink to a printing press as claimed in claim 1, including

actuating a control switch in accord with inflating said bladder, whereby said bladder will not be inflated without activation of said switch.

9. The method for dispensing ink to a printing press as claimed in claim 1, including

disposing said abutment in an upright plane,

suspending said ink bag in said upright plane adjacent said abutment to have said spout at the lowermost location on said ink bag and with said flow direction being directed downwardly, and

applying the force exerted by said bladder and on said ink bag only transverse to said plane and initially only at the portion of said ink bag furthest from said spout and then sequentially to said spout.

10. A method for dispensing ink to a printing press, comprising the steps of

placing ink into a flexible bag which has an outlet spout defining an ink-flow direction and two sides respectively disposed on opposite sides of said spout and parallel to said ink-flow direction,

positioning-said bag with a first one of said sides of said bag disposed adjacent an abutment,

positioning said bag with a second one of said sides of said bag in direct contact with adjacent) an air bladder formed of an endless wall of elastomer material, and

inflating said bladder with pressurized air and forcing said wall of said-bladder directly against and into face-to-face contact with said second side of said bag and then forcing said bag against said abutment and thereby forcing the ink from said bag through said spout.

11. The method for dispensing ink to a printing press as claimed in claim 10, including

suspending said bag in an upright position with said spout in a lowermost position on said bag, and

forcing on said bag by said bladder in sequence commencing initially at the portion of said bag most distant from said spout.

12. The method for dispensing ink to a printing press as claimed in claim 10, including

disposing said bag in an inverted position whereby said spout is in the lowermost position relative to the remainder of said bag, and

arranging said spout to be disposed offset on said bag and thereby adjacent said first side.

13. The method for dispensing ink to a printing press as claimed in claim 10, including

placing said bag and said bladder into a canister which includes said abutment and having said bladder and said bag occupy said canister in an arrangement whereby said bladder and said bag are restrained by said canister when said bladder is inflated with air.

14. The method for dispensing ink to a printing press as claimed in claim 10, including

suspending said ink bag adjacent said abutment to have said spout at the lowermost location on said ink bag, and

applying the force exerted by said bladder and on said second side of said ink bag initially only at the portion of said ink bag furthest from said spout and then sequentially to said spout.

15. The method for dispensing ink to a printing press as claimed in claim 10, including

activating a switch for controlling the air supply to said bladder and doing so when said ink bag is in contact with said bladder, and

releasing from said bladder the pressurized air therein and allowing the elastomer character of said bladder to cause said bladder to self-deflate and self-contract to a condition of readiness for a subsequent inflation.

16. An ink dispenser for dispensing ink to a printing press comprising,

a pliable ink container bag with ink therein and having an ink outlet spout therein and arranged for the flow of ink from said container in a given direction, and

an air bladder of an elastomer material and having only an endless wall forming a complete enclosure disposed adjacent said ink container and being air-inflatable and arranged for expanding and forcing said wall into direct contact with said ink container only in a direction perpendicular to said given direction to cause the ink in said container to flow directly into said outlet spout in said given direction.

17. The ink dispenser for dispensing ink to a printing press as claimed in claim 16, wherein

said ink container is a pliable bag and said outlet spout extends in a downward direction, and including

an uprightly disposed support adjacent said bag on the side of said bag which is opposite from the location of said bladder and said support is disposed parallel to the extent of said downward direction, whereby air-inflation of said bladder expands said bladder into forcing on said bag to evacuate the ink from said bag through said outlet spout.

18. The ink dispenser for dispensing ink to a printing press as claimed in claim 17, wherein

said support completely surrounds said bag except in the direction from said bag to said bladder, and thereby the air-inflation of said bladder-forces said bag against said support for squeezing the ink from said bag, and

said spout is offset on said bag in the direction perpendicular to the force applied by said bladder onto said bag.

19. The ink dispenser for dispensing ink to a printing press as claimed in claim 16, wherein

said bladder and said bag are disposed in side-by-side relationship, and

said support being operatively associated with said bag to restrain said bag from movement away from said bladder when said bladder is expanded by being inflated with air.

20. The ink dispenser for dispensing ink to a printing press as claimed in claim 16, wherein

said ink container outlet spout extends in said flow direction and offset on said container in-said perpendicular direction, and

said ink container has a tab for hanging said ink container in a position with said spout lowermost on said ink container.

21. The ink dispenser for dispensing ink to a printing press as claimed in claim 16, including

an air supply control operatively associated with said bladder for supplying air to said bladder, and

an ink quantity sensor operatively associated with said air supply control for sensing the quantity of ink dispensed and causing said control to operate to inflate said bladder.

22. An ink dispenser for dispensing ink to a printing press comprising,

a pliable ink container with ink therein and having an ink outlet spout with a passageway for ink flow into said passageway in a given direction and having two sides disposed on opposite sides of said spout and respectively extending parallel to said direction, and

a compressor disposed adjacent said ink container and being arranged in direct contact with said container to force directly on said container only in a direction perpendicular to said given direction and from one of said sides toward the other of said sides to squeeze the ink from said container through said-outlet spout.

23. The ink dispenser for dispensing ink to a printing press as claimed in claim 22, including

an abutment spaced from said compressor, and

said ink container being disposed in contact with said abutment in the space between said abutment and said compressor and with said outlet spout being directed exteriorly of said space.

24. An ink dispenser for dispensing ink to a printing press, comprising

a rigid canister having an interior with an abutment thereon,

an air-inflatable bladder forming a complete enclosure defined by a surrounding endless wall of elastomer material disposed in said interior and with said bladder being expandable in said interior,

an air supply connected with said bladder and being arranged for expanding said bladder in a first direction,

a flexible bag of ink disposed in said interior between said abutment and said bladder and being in direct contact with said wall and having an ink-flow outlet spout extending downwardly in a second direction perpendicular to said first direction and extending from said interior to outside said canister for the flow of ink, and

said bladder and said bag being disposed in side-by-side relationship and with said bladder being arranged for its expansion to force on said bag only in said first direction.

25. The ink dispenser for dispensing ink to a printing press as claimed in claim 24, wherein

said flexible bag of ink is disposed with said spout thereof in the lowermost position on said bag, and

said canister has an opening therein and said spout extends through said opening to outside said canister.

26. The ink dispenser for dispensing ink to a printing press as claimed in claim 24, including

a restrictor engaged with said spout and being arranged for constricting said spout to limit the flow of ink through said spout when air pressure is stabilized in said bladder, and to thereby avoid the dripping of ink from said spout.

27. A method for dispensing ink to a printing press comprising the steps of

positioning an air-actuated compressor-in a container,

providing a flexible bag of ink with an elongated outlet spout thereon and of an elastomer material,

placing said flexible bag of ink adjacent said compressor and with said spout positioned in a downward direction,

closing said spout to the flow of ink therethrough when air pressure is not being applied to said compressor,

applying a force onto said bag by said compressor to move the ink through said spout, and

positioning an elastomer expandable and collapsible collar around said spout and having said collar arranged to expand in response to said force of said compressor moving ink through said spout and having said collar arranged to collapse onto said spout to close said spout when said compressor is not exerting said force on said bag.

28. A method for dispensing ink to a printing press, comprising the steps of

placing ink into a flexible bag which has an outlet spout,

positioning said bag with a first side of said bag disposed adjacent an abutment and in ink-flow communication through said spout and to a printing press,

positioning an air bladder adjacent said bag at a second side of said bag opposite from said first side,

inflating said bladder with pressurized air and forcing said bladder against said second side of said bag and then forcing said bag against said abutment and thereby forcing the ink from said bag through said spout and to said printing press,

sensing the amount of ink flowing from said bag and regulating the inflating of said bladder in accord with the amount of flowing ink,

moving said abutment away from said bladder and then positioning said ink bag adjacent said abutment, and

moving said abutment and said ink bag toward said bladder and positioning said ink bag into position to be forced upon by said bladder.

29. A method for dispensing ink to a printing press, comprising the steps of

placing ink into a flexible bag which has an outlet spout and a side on each oppositely disposed side of said bag,

positioning said bag with a first one of said sides of said bag disposed adjacent an abutment,

positioning said bag with a second one of said sides of said bag adjacent an air bladder,

inflating said bladder with pressurized air and forcing said bladder against said second side of said bag and then forcing said bag against said abutment and thereby forcing the ink from said bag through said spout,

sensing the quantity of ink dispensed to said printing press,

activating a control for applying air to said bladder in accord with the sensing of ink dispensed,

timing the length of time that said control is activated, and

activating a signal after a length of time has transpired for the activation of said control.

30. An ink dispenser for dispensing ink to a printing press comprising,

a pliable ink container with ink therein and having an ink outlet opening therein and arranged for the flow of ink in a given direction,

an air bladder disposed adjacent said ink container and being air-inflatable and arranged for expanding and forcing on said ink container in a direction perpendicular to said given direction to cause the ink in said container to flow through said outlet spout,

said ink container is a pliable bag,

a support adjacent said bag on the side of said bag which is opposite from the location of said bladder, whereby air-inflation of said bladder expands said bladder into forcing on said bag to evacuate the ink from said bag through said outlet spout,

said support completely surrounds said bag except in the direction from said bag to said bladder, and thereby the air-inflation of said bladder forces said bag against said support for squeezing the ink from said bag,

said support is an enclosure having sides extending therearound and being separable into two equal halves, and

both said bladder and said bag are disposed in respective halves of said enclosure.

31. An ink dispenser for dispensing ink to a printing press comprising,

a pliable ink container with ink therein and having an ink outlet opening therein and arranged for the flow of ink in a given direction,

an air bladder disposed adjacent said ink container and being air-inflatable and arranged for expanding and forcing on said ink container in a direction perpendicular to said given direction to cause the ink in said container to flow through said outlet spout,

a support having two portions for respectively supporting said ink container and said bladder, and

said portion of said support supporting said ink container being movable away from said portion of said support supporting said bladder, for removing and installing said ink container relative to said support.

32. An ink dispenser for dispensing ink to a printing press comprising,

a pliable ink container with ink therein and having an ink outlet opening therein and arranged for the flow of ink in a given direction,

an air bladder disposed adjacent said ink container and being air-inflatable and arranged for expanding and forcing on said ink container in a direction perpendicular to said given direction to cause the ink in said container to flow through said outlet spout,

a canister having a movable portion for access to the interior thereof,

said ink container and said air bladder being disposed in side-by-side positions in said canister and being restricted in movement by said canister, and

said ink container being movable relative to said canister upon moving said movable portion of said canister for installing and removing said ink container relative to said canister.

33. An ink dispenser for dispensing ink to a printing press comprising,

a pliable ink container with ink therein and having an ink outlet spout for ink flow therethrough in a given direction,

a compressor disposed adjacent said ink container and being arranged to force on said container in a direction perpendicular to said given direction to squeeze the ink from said container through said outlet spout,

an abutment spaced from said compressor,

said ink container being disposed in contact with said abutment in the space between said abutment and said compressor and with said outlet spout being directed exteriorly of said space, and

a gate movable connected with said abutment and having an opening therein for surrounding said spout and thereby constraining said spout.

34. An ink dispenser for dispensing ink to a printing press, comprising

a rigid canister having an interior with an abutment thereon,

an air-inflatable bladder disposed in said interior for expansion in said interior,

an air supply connected with said bladder and being arranged for expanding said bladder in a first direction,

a flexible bag of ink disposed in said interior between said abutment and said bladder and having an ink-flow outlet spout extending downwardly in a second direction perpendicular to said first direction and extending from said interior to outside said canister for the flow of ink, and

said canister having two half portions with one of said portions arranged to be movable relative to the other of said portions and with said one portion being pivotally attached to said other portion for moving away from said other portion and thereby expose the interior of said canister for the removal and replacement of said bag relative to the interior of said canister.

35. An ink dispenser for dispensing ink to a printing press, comprising

a rigid canister having an interior with an abutment thereon,

an air-inflatable bladder disposed in said interior for expansion in said interior,

an air supply connected with said bladder and being arranged for expanding said bladder in a first direction,

a flexible bag of ink disposed in said interior between said abutment and said bladder and having an ink-flow outlet spout extending downwardly in a second direction perpendicular to said first direction and extending from said interior to outside said canister for the flow of ink,

said canister having two half portions with one of said portions arranged to be movable relative to the other of said portions and with said one portion being pivotally attached to said other portion for moving away from said other portion and thereby expose the interior of said canister for the removal and replacement of said bag relative to the interior of said canister,

said one portion has an extended surface pivotal to a horizontal position, and

a hinge connected between said portions and arranged to permanently connect said portions together and position said surface in a horizontal plane when said one portion is pivoted away from said other portion of said canister, for said bag to be laid onto said surface in the inclusion of said bag in said canister.

36. An ink dispenser for dispensing ink to a printing press, comprising

a rigid canister having an interior with an abutment thereon,

an air-inflatable bladder disposed in said interior for expansion in said interior,

an air supply connected with said bladder and being arranged for expanding said bladder in a first direction,

a flexible bag of ink disposed in said interior between said abutment and said bladder and having an ink-flow outlet spout extending downwardly in a second direction perpendicular to said first direction and extending from said interior to outside said canister for the flow of ink,

an ink dispensing sensor having an "on" and an "off" position for monitoring the dispensing of ink,

an air valve operatively connected with said sensor and said bladder for governing the air passing to and from said bladder,

a timer operatively connected with said sensor, and

a warning signal operatively connected with said timer and being arranged to be activated after said sensor is in the "on" position for at least a selected length of time.

37. An ink dispenser for dispensing ink to a printing press comprising,

a pliable ink container bag with ink therein and having an elastomer outlet spout with a passageway directed downwardly and arranged for the flow of ink from said container and into said passageway and through said spout,

a compressor disposed adjacent said ink container bag and being arranged for applying a force onto said ink container bag to cause the ink in said container to flow into said said passageway and through said spout,

an elastomer member disposed to surround said spout and being contractible onto said spout to close said passageway when said bladder is not applying said force onto said spout and thus avoid having the ink flow from said bag, and said member being of a flexibility to be free of contraction onto said spout and thus allow the ink to flow through said passageway in response to said force from said compressor.