CA1149224A - Press spray dampener - Google Patents
Press spray dampenerInfo
- Publication number
- CA1149224A CA1149224A CA000373407A CA373407A CA1149224A CA 1149224 A CA1149224 A CA 1149224A CA 000373407 A CA000373407 A CA 000373407A CA 373407 A CA373407 A CA 373407A CA 1149224 A CA1149224 A CA 1149224A
- Authority
- CA
- Canada
- Prior art keywords
- elongated
- diameter
- manifold
- bore
- nozzle
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
- B41F7/30—Damping devices using spraying elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3026—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being a gate valve, a sliding valve or a cock
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
- B05B1/3447—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cylinder having the same axis as the outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
- B05B15/522—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings
- B05B15/5223—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings the cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the flow of liquid or other fluent material through said opening
- B05B15/5225—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles using cleaning elements penetrating the discharge openings the cleaning element, e.g. a needle, and the discharge opening being movable relative to each other in a direction substantially parallel to the flow of liquid or other fluent material through said opening the cleaning element being located upstream of the discharge opening or being actuated upstream therefrom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
- B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
- B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
- B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0884—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being aligned
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/10—Spray pistols; Apparatus for discharge producing a swirling discharge
Abstract
-8-IMPROVED PRESS SPRAY DAMPENER Abstract of the Disclosure An improved manifold spray unit for the dampening system of a printing press in which a supply manifold contains a plurality of individual spray heads each of the spray heads including elongated means defining a nozzle opening and including an elongated capillary rod mounted within the elongated means for movement between open and closed positions.
Description
~ ~Ott-7S--~sæ2~
IMPROVED PRESS SPRAY`DAMPENER
Background of the Invention The lithographic process for printing utilizes an image carrier that is essentially planographic, that is, S the image area on the printing plate is essentially on the same plane as the non-image area. Thus, lithography differs from the well known relief processes where the printing areas stand in a totally different plane from the non-image areas. Since the image carriers or plates are planographic, success of the lithographic process depends upon the use of plates that have been treated so that the image areas are hydrophobic, or not receptive to water, and the non-image areas are hydrophyl~c, whioh means that they are receptive to water. Since successful lithgraphic printing relies upon the presence of water to preclude the non-image areas from acquiring ink, it is apparent tha~
fluid dampening of the printing cylinder is an essential element to successful performance of the printing function.
In the past, the most common means for applying water to lithographic plate cylinders involved the use of water fountains, a vibrating distributor roller and a plurality of form rollers that transferred the fluid dampening medium from the vibrator roll to the plate. While the non-image areas have been characterized as hydrophylic and receptive to water, it will be understood that frequently minor ~9z~
amounts of agents are added to the water for a variety of purposes so that in a technical sense, the dampening medium does not always consist solely of water. As print quality and printing speed demands on modern web-fed rotary presses have increased, the need for improved dampener performance has been experienced. This invention provides positive, accurate, and reliable control of dampening fluid application. Obviously to obtain commercially feasible dampening by the System, the construction and operation of the spraying mechanism are of prime significance.
A principal object of this invention is to provide an improved manifold spray dampening unit for accurately supplying dampening fluid to a press printing couple. A helical groove of relatively large cross-section area is used to provide flow resistance in each fluid outlet, rather than a very small, easily plugged hole.
Another object of this invention is to provide an improved manifold spray dampening unit which is self-cleaning and which individual spray head ~mits can be closed when not needed.
According to the present invention there is provided in a system for delivering dampening fluid to a rotating cylinder of a web fed rotary press, an improved manifold spray unit comprising:
(a) an elongated manifold body defining elongated first and second pas-sages for conducting flow of air and dampening fluid along the length of said manifold and defining a plurality of lateral openings extending through said manifold and through said first and second passages in a direction substantially normal to the axes thereof;
(b) individual spray head means mounted within each lateral opening in said manifold body, each said spray head means including:
~i) elongated first means having enlarged inner and outer end portions that engage the inner walls of said lateral opening and which defines
IMPROVED PRESS SPRAY`DAMPENER
Background of the Invention The lithographic process for printing utilizes an image carrier that is essentially planographic, that is, S the image area on the printing plate is essentially on the same plane as the non-image area. Thus, lithography differs from the well known relief processes where the printing areas stand in a totally different plane from the non-image areas. Since the image carriers or plates are planographic, success of the lithographic process depends upon the use of plates that have been treated so that the image areas are hydrophobic, or not receptive to water, and the non-image areas are hydrophyl~c, whioh means that they are receptive to water. Since successful lithgraphic printing relies upon the presence of water to preclude the non-image areas from acquiring ink, it is apparent tha~
fluid dampening of the printing cylinder is an essential element to successful performance of the printing function.
In the past, the most common means for applying water to lithographic plate cylinders involved the use of water fountains, a vibrating distributor roller and a plurality of form rollers that transferred the fluid dampening medium from the vibrator roll to the plate. While the non-image areas have been characterized as hydrophylic and receptive to water, it will be understood that frequently minor ~9z~
amounts of agents are added to the water for a variety of purposes so that in a technical sense, the dampening medium does not always consist solely of water. As print quality and printing speed demands on modern web-fed rotary presses have increased, the need for improved dampener performance has been experienced. This invention provides positive, accurate, and reliable control of dampening fluid application. Obviously to obtain commercially feasible dampening by the System, the construction and operation of the spraying mechanism are of prime significance.
A principal object of this invention is to provide an improved manifold spray dampening unit for accurately supplying dampening fluid to a press printing couple. A helical groove of relatively large cross-section area is used to provide flow resistance in each fluid outlet, rather than a very small, easily plugged hole.
Another object of this invention is to provide an improved manifold spray dampening unit which is self-cleaning and which individual spray head ~mits can be closed when not needed.
According to the present invention there is provided in a system for delivering dampening fluid to a rotating cylinder of a web fed rotary press, an improved manifold spray unit comprising:
(a) an elongated manifold body defining elongated first and second pas-sages for conducting flow of air and dampening fluid along the length of said manifold and defining a plurality of lateral openings extending through said manifold and through said first and second passages in a direction substantially normal to the axes thereof;
(b) individual spray head means mounted within each lateral opening in said manifold body, each said spray head means including:
~i) elongated first means having enlarged inner and outer end portions that engage the inner walls of said lateral opening and which defines
2~4 - 2a -a through bore of varying diameters terminating in a nozzle opening and which further defines passages connecting said first longitudinal air passage to the exterior of said spray head;
(ii) an orifice nozzle mounted within the bore of said elongated first means adjacent the nozzle opening;
~ iii) an elongated capillary rod mounted within the bore of said elongated first means for axial movement therein and being configured such that when positioned in a forward position, no flow of dampening fluid can cccur;
~c) closure means secured to said manifold body to seal the inner end of said lateral opening in said manifold body; and (d) latching means secured to said manifold body to retain said capil-lary rod in its forward, closed position when desired.
Other objects and advantages of this invention will be in part obvious and in part explained with reference to the accompanying specification and drawings in which:
Brief Description of the Drawings Figure 1 is a sectional view through a spray head of this invention showing the operating parts in positions where dampening fluid can be ejected;
Figure 2 is a sectional view similar to Figure 1 showing the spray in a closed position;
Figure 3 is a partial front elevation of the manifold spray system;
and Figure 4 is a top elevation, partly sectional, to show the manner in which a spray head is mounted with the spray manifold.
Description of the Preferred Embodiments To more fully understand the present system for delivering dampening fluid to a rotating cylinder of a web 9z~
fed rotary press, reference is made to the drawings and, in particular, to Figures 1 and 3 in which the numeral 10 denotes an elongated manifold. Manifold 10 defines a first elongated passage 11 for conducting the flow of air from an appropriate source to each of the individual spray head means located along the length of the manifold. Also defined by the elongated manifold body 10 is a second elongated passage 12 which provides for the flow of dampen-ing fluid along the length of the manifold. It will be seen that the manifold also contains a plurality of lateral openings 13 which extend through manifold 10 and through first and second elongated passages 11 and 12 in a direction which is substantially normal to the axis of passages 11 and 12. For a description of a press spray dampening system which can advantageously utilize the manifold spray of this inventionr reference is made to applicant's co-pending Canadian application ~erial No. 373,972, filed on even date herewith and assigned to the same assignee as this invention.
Within each lateral opening 13 there is mounted individual spray head means 15 that provides for the appropriate mixing of dampening fluid and air so that a finely controlled spray of dampen-ing fluid can be e~ected against a dampener roll in the press. Thespray head means includes an elongated first means 16 which has an enlarged inner end portion 17 and an enlarged outer end portion 18.
Both enlarged portions i7 and 18 engage the inner walls of lateral opening 13, the enlarged inner end 17 effectively acting to preclude communication between elongated passage 11 and 12. The elongated first means 16 defines a through-bore 20 which varies in diameter throughout its length and which terminates in a nozzle opening 21. Formed in the outer enlarged portion 18 are a pair of .~, ,~.
~ 9~9~24 air passages 22 that extend between air passage 11 and the exterior of the spray head. It can be seen that passages 22 converge, at an acute angle, to a point located just forwardl~
of the nozzle opening 21.
- 3a -Referring to Figs. 2 and 4, it will be seen that an orifice nozzle 25 is mounted within bore 20 of said elongated first means 16. This nozzle has a rearwardly facing portion of relatively large internal diameter 26 and an outwardly facing extension which defines a small spray opening 27.
The spray head means 15 further comprises an enlongated capillary rod 30 that is mounted within the bore of the elongated first means 16 for axial movement within member 16. This elongated capillary rod comprises a needle-like inner portion 31 of a diameter which is only slightly less than the diameter of spray opening 27. The purpose for providing extension 31 is to enable opening 27 to be freed of any blocking simply by moving capillary rod 3û into the position shown in Fig. 2.
Capillary rod 3û also includes an intermediate portion 32 ha~ing a diameter slightly less than the diameter of the intermediate secton of through-bore 20 and an outer portion 33 of the same diameter as intermediate portion 32. ~y referring to the drawings, it will be noted that the intermediate portion 32 and outer portion 33 are of the same diameter and are separated by a portion 34 which is of lesser diameter than the diameters of portions 32 and 33.
After outer portion 33, the capillary member extends rearwardly beyond the rearmost surface of manifold 10.
Intermediate portion 32 of the capillary rod 30 is formed with a precision metering groove 35 so that when rod 30 is in the position shown in Fig. 1, dampening fluid can flow from elongated passage 12, through the metering groove and out through spray opening 27. Normally, capillary rod 30 would be kept in the open position by means of helical spring 40 that is compressed between a rearwarly facing wall 41 in the elongated first means 16 and a collar 42 that is secured to the outer portion 33 of capillary rod 30.
While the forward end of lateral opening 13 is closed by the enlarged outer portion 13 of spray head means 15, the opposite end is closed by means of a closure member 45 through which the rearward portion of capillary rod 30 ~ ~ 5 2 ~
extends. Qppropriate 0-rings 46 are utilized in the manner indicated to effect sealing to prevent the undesired escape - of air or of dampening fluid. rhe spray head means 15 i.s held completely within the lateral opening of the manifold 10 by means of plates 47 and appropriate threaded fasteners 48.
It will be seen that on the rearmost side of manifold 10 there is provided a latching element 50 that is secured to the manifold by one of the threaded fasteners 48. The latching element 50 may be an elongated bar with an upstanding leg 51 extending the length of manifold 10 or individual elements may be provided for each of the spray heads.
Finally, it will be noted that the rearmost end of capillary rod 30 is provided with a knob 55 that includes a tang 56 that can be used to hold the capillary rod in its forwardmost position (see Fig. 2) so that no ~low of dampening fluid from passage 12 through the metering groove can occur. rhis interruption of flow from the spray head is effected by the forward end of the outer portion 33 sliding into that portion of through-bore 20 that is of intermediate diameter.
Although the present invention has been described in connection with a preferred embodiment, it is to be understood that other modifications and variations may be resorted to without departing from the spirit and scope of the invention as those skilled in the art will readily understand. Such modifications and variations are considered to be within the purview and scope of the invention and the appended claims.
(ii) an orifice nozzle mounted within the bore of said elongated first means adjacent the nozzle opening;
~ iii) an elongated capillary rod mounted within the bore of said elongated first means for axial movement therein and being configured such that when positioned in a forward position, no flow of dampening fluid can cccur;
~c) closure means secured to said manifold body to seal the inner end of said lateral opening in said manifold body; and (d) latching means secured to said manifold body to retain said capil-lary rod in its forward, closed position when desired.
Other objects and advantages of this invention will be in part obvious and in part explained with reference to the accompanying specification and drawings in which:
Brief Description of the Drawings Figure 1 is a sectional view through a spray head of this invention showing the operating parts in positions where dampening fluid can be ejected;
Figure 2 is a sectional view similar to Figure 1 showing the spray in a closed position;
Figure 3 is a partial front elevation of the manifold spray system;
and Figure 4 is a top elevation, partly sectional, to show the manner in which a spray head is mounted with the spray manifold.
Description of the Preferred Embodiments To more fully understand the present system for delivering dampening fluid to a rotating cylinder of a web 9z~
fed rotary press, reference is made to the drawings and, in particular, to Figures 1 and 3 in which the numeral 10 denotes an elongated manifold. Manifold 10 defines a first elongated passage 11 for conducting the flow of air from an appropriate source to each of the individual spray head means located along the length of the manifold. Also defined by the elongated manifold body 10 is a second elongated passage 12 which provides for the flow of dampen-ing fluid along the length of the manifold. It will be seen that the manifold also contains a plurality of lateral openings 13 which extend through manifold 10 and through first and second elongated passages 11 and 12 in a direction which is substantially normal to the axis of passages 11 and 12. For a description of a press spray dampening system which can advantageously utilize the manifold spray of this inventionr reference is made to applicant's co-pending Canadian application ~erial No. 373,972, filed on even date herewith and assigned to the same assignee as this invention.
Within each lateral opening 13 there is mounted individual spray head means 15 that provides for the appropriate mixing of dampening fluid and air so that a finely controlled spray of dampen-ing fluid can be e~ected against a dampener roll in the press. Thespray head means includes an elongated first means 16 which has an enlarged inner end portion 17 and an enlarged outer end portion 18.
Both enlarged portions i7 and 18 engage the inner walls of lateral opening 13, the enlarged inner end 17 effectively acting to preclude communication between elongated passage 11 and 12. The elongated first means 16 defines a through-bore 20 which varies in diameter throughout its length and which terminates in a nozzle opening 21. Formed in the outer enlarged portion 18 are a pair of .~, ,~.
~ 9~9~24 air passages 22 that extend between air passage 11 and the exterior of the spray head. It can be seen that passages 22 converge, at an acute angle, to a point located just forwardl~
of the nozzle opening 21.
- 3a -Referring to Figs. 2 and 4, it will be seen that an orifice nozzle 25 is mounted within bore 20 of said elongated first means 16. This nozzle has a rearwardly facing portion of relatively large internal diameter 26 and an outwardly facing extension which defines a small spray opening 27.
The spray head means 15 further comprises an enlongated capillary rod 30 that is mounted within the bore of the elongated first means 16 for axial movement within member 16. This elongated capillary rod comprises a needle-like inner portion 31 of a diameter which is only slightly less than the diameter of spray opening 27. The purpose for providing extension 31 is to enable opening 27 to be freed of any blocking simply by moving capillary rod 3û into the position shown in Fig. 2.
Capillary rod 3û also includes an intermediate portion 32 ha~ing a diameter slightly less than the diameter of the intermediate secton of through-bore 20 and an outer portion 33 of the same diameter as intermediate portion 32. ~y referring to the drawings, it will be noted that the intermediate portion 32 and outer portion 33 are of the same diameter and are separated by a portion 34 which is of lesser diameter than the diameters of portions 32 and 33.
After outer portion 33, the capillary member extends rearwardly beyond the rearmost surface of manifold 10.
Intermediate portion 32 of the capillary rod 30 is formed with a precision metering groove 35 so that when rod 30 is in the position shown in Fig. 1, dampening fluid can flow from elongated passage 12, through the metering groove and out through spray opening 27. Normally, capillary rod 30 would be kept in the open position by means of helical spring 40 that is compressed between a rearwarly facing wall 41 in the elongated first means 16 and a collar 42 that is secured to the outer portion 33 of capillary rod 30.
While the forward end of lateral opening 13 is closed by the enlarged outer portion 13 of spray head means 15, the opposite end is closed by means of a closure member 45 through which the rearward portion of capillary rod 30 ~ ~ 5 2 ~
extends. Qppropriate 0-rings 46 are utilized in the manner indicated to effect sealing to prevent the undesired escape - of air or of dampening fluid. rhe spray head means 15 i.s held completely within the lateral opening of the manifold 10 by means of plates 47 and appropriate threaded fasteners 48.
It will be seen that on the rearmost side of manifold 10 there is provided a latching element 50 that is secured to the manifold by one of the threaded fasteners 48. The latching element 50 may be an elongated bar with an upstanding leg 51 extending the length of manifold 10 or individual elements may be provided for each of the spray heads.
Finally, it will be noted that the rearmost end of capillary rod 30 is provided with a knob 55 that includes a tang 56 that can be used to hold the capillary rod in its forwardmost position (see Fig. 2) so that no ~low of dampening fluid from passage 12 through the metering groove can occur. rhis interruption of flow from the spray head is effected by the forward end of the outer portion 33 sliding into that portion of through-bore 20 that is of intermediate diameter.
Although the present invention has been described in connection with a preferred embodiment, it is to be understood that other modifications and variations may be resorted to without departing from the spirit and scope of the invention as those skilled in the art will readily understand. Such modifications and variations are considered to be within the purview and scope of the invention and the appended claims.
Claims (5)
1. In a system for delivering dampening fluid to a rotating cylinder of a web fed rotary press, an improved manifold spray unit, comprising:
(a) an elongated manifold body defining elongated first and second passages for conducting flow of air and dampening fluid along the length of said manifold and defining a plurality of lateral openings extending through said manifold and through said first and second passages in a direction substantially normal to the axes thereof;
(b) individual spray head means mounted within each lateral opening in said manifold body, each said spray head means including:
(i) elongated first means having enlarged inner and outer end portions that engage the inner walls of said lateral opening and which defines a through bore of varying diameters terminating in a nozzle opening and which further defines passages connecting said first longitudinal air passage to the exterior of said spray head;
(ii) an orifice nozzle mounted within the bore of said elongated first means adjacent the nozzle opening;
(iii) an elongated capillary rod mounted within the bore of said elongated first means for axial movement therein and being configured such that when positioned in a forward position, no flow of dampening fluid can occur.
(c) closure means secured to said manifold body to seal the inner end of said lateral opening in said manifold body; and (d) latching means secured to said manifold body to retain said capillary rod in its forward, closed position when desired.
(a) an elongated manifold body defining elongated first and second passages for conducting flow of air and dampening fluid along the length of said manifold and defining a plurality of lateral openings extending through said manifold and through said first and second passages in a direction substantially normal to the axes thereof;
(b) individual spray head means mounted within each lateral opening in said manifold body, each said spray head means including:
(i) elongated first means having enlarged inner and outer end portions that engage the inner walls of said lateral opening and which defines a through bore of varying diameters terminating in a nozzle opening and which further defines passages connecting said first longitudinal air passage to the exterior of said spray head;
(ii) an orifice nozzle mounted within the bore of said elongated first means adjacent the nozzle opening;
(iii) an elongated capillary rod mounted within the bore of said elongated first means for axial movement therein and being configured such that when positioned in a forward position, no flow of dampening fluid can occur.
(c) closure means secured to said manifold body to seal the inner end of said lateral opening in said manifold body; and (d) latching means secured to said manifold body to retain said capillary rod in its forward, closed position when desired.
2. A system as defined in claim 1 wherein said elongated first means defines a through-bore having its largest diameter within the enlarged inner end thereof, an intermediate diameter in the middle portion thereof, and its smallest diameter within the enlarged outer end thereof to define a nozzle opening.
3. A system as defined in claim 2 wherein said elongated capillary rod comprises a needle-like inner portion having an outer diameter slightly less than the diameter of said nozzle opening, an intermediate portion having a diameter slightly less than the diameter of the intermediate section of said through-bore, an outer portion of the same diameter as said intermediate portion and a portion located between said intermediate and outer portions which is of lesser diameter than each of said portions.
4. A system as defined in claim 3 wherein said outer portion extends rearwardly through said closure means and has control means secured thereto for engagement with said latching means.
5. A system as defined in claim 3 wherein said intermediate portion defines a metering groove that extends from said portion of lesser diameter to said orifice nozzle to provide for the flow of dampening fluid from said second elongated passage to said nozzle orifice.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14007580A | 1980-04-14 | 1980-04-14 | |
| US140,075 | 1980-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1149224A true CA1149224A (en) | 1983-07-05 |
Family
ID=22489637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000373407A Expired CA1149224A (en) | 1980-04-14 | 1981-03-19 | Press spray dampener |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS56163780A (en) |
| CA (1) | CA1149224A (en) |
| FR (1) | FR2480184A1 (en) |
| GB (1) | GB2074049B (en) |
| SE (1) | SE8102357L (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4679711A (en) * | 1985-09-11 | 1987-07-14 | Nordson Corporation | Multi-orifice zero cavity nozzle dispenser |
| US5040457A (en) * | 1989-10-10 | 1991-08-20 | Rockwell International Corporation | Printing press dampener |
| EP1834703A3 (en) * | 2006-03-13 | 2008-11-05 | Ing. Erich Pfeiffer GmbH | Discharge device for a flowable medium |
| US20100224123A1 (en) * | 2009-03-09 | 2010-09-09 | Illinois Tool Works Inc. | Modular nozzle unit for web moistening |
| US9186881B2 (en) | 2009-03-09 | 2015-11-17 | Illinois Tool Works Inc. | Thermally isolated liquid supply for web moistening |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE598481C (en) * | 1932-02-19 | 1934-06-12 | Albert Schnellpressen | Device for spraying ink onto the forme cylinder or the ink rollers on printing machines |
| GB460331A (en) * | 1935-11-29 | 1937-01-26 | Ralph Jackson Watts | Improvements in or relating to spraying nozzles and like appliances |
| CH264821A (en) * | 1945-02-26 | 1949-10-31 | Edwin Marsden Horace | Device for moistening the printing form of a lithographic printing press. |
| DE1109706B (en) * | 1959-06-06 | 1961-06-29 | Maschf Augsburg Nuernberg Ag | Paint nozzle for pump inking units |
| DE2324597A1 (en) * | 1973-05-16 | 1974-12-05 | Wagner Gmbh J | SPRAY NOZZLE FOR SPRAYING LIQUIDS, ESPECIALLY FOR CLEANING TEXTILES WITH A SPRAY JET |
-
1981
- 1981-03-19 CA CA000373407A patent/CA1149224A/en not_active Expired
- 1981-03-23 GB GB8109041A patent/GB2074049B/en not_active Expired
- 1981-04-13 SE SE8102357A patent/SE8102357L/en not_active Application Discontinuation
- 1981-04-13 FR FR8107348A patent/FR2480184A1/en active Pending
- 1981-04-13 JP JP5546681A patent/JPS56163780A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB2074049A (en) | 1981-10-28 |
| FR2480184A1 (en) | 1981-10-16 |
| GB2074049B (en) | 1984-01-25 |
| SE8102357L (en) | 1981-10-15 |
| JPS56163780A (en) | 1981-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20000705 |