US3167012A - Sheet control and spray collection chamber - Google Patents

Sheet control and spray collection chamber Download PDF

Info

Publication number
US3167012A
US3167012A US156445A US15644561A US3167012A US 3167012 A US3167012 A US 3167012A US 156445 A US156445 A US 156445A US 15644561 A US15644561 A US 15644561A US 3167012 A US3167012 A US 3167012A
Authority
US
United States
Prior art keywords
chamber
delivery
sheet
spray
sheets
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
Application number
US156445A
Other languages
English (en)
Inventor
Carlton C Claybourn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miehle Goss Dexter Inc
Original Assignee
Miehle Goss Dexter Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Miehle Goss Dexter Inc filed Critical Miehle Goss Dexter Inc
Priority to US156445A priority Critical patent/US3167012A/en
Priority to GB43030/62D priority patent/GB951319A/en
Priority to CH1394962A priority patent/CH397727A/de
Application granted granted Critical
Publication of US3167012A publication Critical patent/US3167012A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/06—Powdering devices, e.g. for preventing set-off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/08—Print finishing devices, e.g. for glossing prints

Definitions

  • the invention relates to sheet control means having a spray collection chamber combined therewith and has for its main objective to provide an enclosing air chamber which will contain the spray mechanism employed for ink offset prevention and which will eliminate the uncontrolled distribution of the fine spray particles into the atmosphere.
  • the spraying technique facilitates the rapid drying of the ink and permits faster press operations with all the attendant advantages.
  • the various spray compositions are generally discharged from above the printed sheet by an air blast, although electrostatic means in combination with air under pressure have also been employed.
  • electrostatic means in combination with air under pressure have also been employed.
  • the excess spray particles are distributed in an uncontrolled manner into the atmosphere surrounding the press and thus the spray particles are eventually precipitated onto the operating parts of the press. This necessitates periodic cleaning of the press and in addition the accompanying and objectionable contamination of the atmosphere is always present.
  • the invention aims to contain and control the spray particles by providing an air chamber in surrounding and enclosing relation with that part of the sheet delivery mechanism immediately preceding the delivery rack.
  • a more specific object is to provide an air chamber for confining the excess spray particles discharged onto the printed sheets for ink offset prevention, and wherein air will be admitted and withdrawn from the chamber in a manner to control the sheet during its passage through the chamber.
  • Another object of the invention resides in the provision of a spray containing chamber for the purposes described and wherein an air admitting opening is provided at the sheet entrance and exit ends with suction means being located intermediate the sheet exit and the sheet entrance end and which withdraws theair and the excess spray particles in a manner to substantially eliminate sheet flutter and which thus maintains the sheet under control for the most satisfactory application of the spray medium.
  • a further object is to provide a spray containing chambet as described wherein the air admitting opening is adjustabl'e.
  • FIGURE l is a vertical sectional view taken approximately centrally or chain delivery mechanism for a printing press having a spray collection chamber combined therewith in accordance with the invention
  • FIGURE 2 is an end elevational view of the apparatus shown in FIGURE 1 taken substantially along line 22 of said figure;
  • FIGURE 3 is a fragmentary-sectional view showing in detail the rack and pinion means for the adjustable plate.
  • the chain delivery mechanism selected for illustrating the invention essentially comprises a pair of endless chains 16 which are spaced apart approximately the width of the impression cylinder 12, and which are adapted to travel about end sprockets such as 14 at respective ends of the chain delivery mechanism.
  • End sprockets 14, journalled by the shaft 15, are located adjacent the impression cylinder 12, whereas the sprockets for the opposite end of the chain mechanism, not shown, are located at the rear of the delivery table 16 and above the same.
  • the upper or return run of each chain is guided by idler sprockets 17 and 18 and which are journalled by shafts 20 and 21, respectively.
  • each chain is guided by the cuived guard elements 22 and 23 spaced for accommodating a chain thereb-etween, and which extend within the spray chamber 24 tobe presently described in detail.
  • the lower run of the chains are additionally guided by the straight guard elements 25 which have location above the delivery table 16.
  • the plurality of gripper assemblies 26 supported on transverse shafts 27 mounted at spaced intervals on the respective chains are adapted to receive printed sheets from the grippers 28 on the impression'cylinder 12.
  • the sheets upon being engaged by the gripper assemblies 26 are conveyed in a curvilinear path through the spray chamber 24, and the sheets are eventually conveyed to a position over the delivery table 16.
  • the gripper assemblies 26 are cam actuated into an open position and the sheet is deposited onto the delivery pile 29.
  • side joggers and rear joggers not shown, function in a well known manner to align the sheet with previously deposited sheets on the table.
  • the spray chamber indicated in its entirety by numeral 24 is located intermediate the sprockets 14 and the delivery table 16. During travel of the printed sheets between these two locations the sheets pass through the spray chamber, during which they are subjected to a spray for the purpose of preventing offsetting of the ink.
  • the spray chamber essentially consists of a. front wall 30, a rear wall 31, a top wall 32, and a bottom wall 33. Side walls 34 and 35, as best shown in FIGURE 2, connect the front, back, top and bottom walls of the chamber and the said chamber is suitably supported from the side frames 36 and 37 of the press by the transverse beam 38.
  • An opening is provided in the bottom wall 33, and it will be understood that the spaced guard elements 22 and 23 together with the lower run of the chains 10 and also the sheet supporting members 40 extend through this entrance opening.
  • the bottom Wall 33 and, to a partial extent, the rear wall 311, are formed to provide a suction opening ill to which is connected the conduit 42 leading to the exhaust fan 4-3.
  • the said fan is powered by the motor 44 through the endless belts 45 and the air and spray particles withdrawn from the chamber are delivered by the fan to thedischarge conduit 46'.
  • a plate 47 is releasably fixed to the'rear wall 31 of the chamber, and said plate can be conveniently removed for access to the interior of the chamber for repairing the chain mechanism or for general cleaning purposes.
  • the transverse shaft end of the actuating shaft 53 extends beyond the side frame 37 and this extending end is provided with a knob or handle 59 and which is conveniently accessible to the operator.
  • a printed sheet will be engaged by the gripper devices 26 and conveyed into the spray chamber 24. It will be understood that whereas the leading edge or" the printed sheet is engaged by the gripper devices, the body of the sheet and its tail end will be in contact with and will be supported by the curved sheet supporting members 40. As shown FEGURES 1 and 2 the members 40 are substantially vertically disposed, since they extend from adjacent the sprockets 14 to the adjustable opening 51. ,Thus during travel of the sheets within the spray chamber 24 they are hacked and supported by the members 40. While thus supported during their travel through a spray chamber, the sheets are subjected to a spraying operation effected by the device 50.
  • Said device essentially consists of a transversely extending container 56 which mounts the etched roller 5'7 for rotation with respect to the high tension bar 58.
  • a positive high potential charge is applied by the bar 53 to the spray particles as they are discharged by the roller 57, and thus the particles of the spraying medium having an electrostatic charge of a positive polarity are deposited onto the printed surface of the sheets.
  • an air current may be produced by the electrostatic device and which additionally assists in the delivery of the spray particles to the sheets.
  • the exhaust fan 43 is operated for Withdrawing the air and excess spraying medium from the chamber.
  • the withdrawing action, of the air from the chamber will function to prevent the excess spray from escaping from the chamber and will also function to control the sheet during its travel through the chamber, it is necessary to regulate the air entering the chamber through the respec- Not only is it important that the volume of air entering through the exit opening be'sufiicient to prevent the escape of excess spray particles, but it is equally essential that the velocity of the air entering the entrance opening be regulated with relation to the speed of the chain conveyor so as not to adversely attract the body or trailing portion of the sheet.
  • the air opening 51 at the exit end of the chamber will be adjustable.
  • the amount and velocity of the air entering the chamber through the exit opening 51 should normally exceed that which enters through the entrance opening in the bottom Wall 33.
  • the air flow through the exit. opening not only functions to pre vent the spray particles from escaping, but the high velocity air moving under the sheet as the latter moves through the exit opening will function to draw the body portion thereof against the guide members 40 thereby eliminating the erratic fluttering action which normally occurs as the sheets pass over the upper curved portions of the guides 44?.
  • the printed sheets are caused to engage the suction device 69 located relatively adjacent the adjustable opening 51 which functions to retard and control the sheets upon their release over the pile by the delivery grippers 2-5.
  • a suction device such as shown in the Claybourn Patent 2,969,980 has been found to be entirely satisfactory.
  • the air and excess spray particles are withdrawn from the chamber at a location on the side of the sheet conveying means opposite the spraying device.
  • the spray chamber accordingly controls the travel of the printed sheets through the chamber and in addition effectively prevents the uncontrolled distribution of'the excess sprayed particles into the atmosphere surrounding the press.
  • sheet delivery mechanism comprising an end-less conveyor having a delivery run and a return run, gripper elements on said conveyor for conveying sheets by their leading edge along the path of the delivery run from a sheet carrying cylinder to a delivery pile, a chamber encompassing the delivery run intermediate the sheet carrying cylinder and the delivery pile, a series of sheet supporting members mounted within said chamber for maintaining the free floating trailing portion of each sheet in the path of said grippers, said chamber having an entrance and an exit opening to accommodate the endless conveyor, an oiiset spray device'located within said chamber and above the delivery run of the conveyor for spraying anti-offset material upon the printed side of the sheets as they pass through said chamber, an exhaust port in said chamber, said exhaust port being located on the side of the delivery run opposite to the spray device, suction means connected to said exhaust port for evacuating said chamber whereby air is drawn inwardly through said entrance and exit openings at a rate sutiicient to substantially preclude the escape of excess spray material through said entrance and exit openings, adjustable gate means associated with

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge By Other Means (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Pile Receivers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
US156445A 1961-12-01 1961-12-01 Sheet control and spray collection chamber Expired - Lifetime US3167012A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US156445A US3167012A (en) 1961-12-01 1961-12-01 Sheet control and spray collection chamber
GB43030/62D GB951319A (en) 1961-12-01 1962-11-14 Improvements relating to a sheet control and spray collection chamber
CH1394962A CH397727A (de) 1961-12-01 1962-11-28 Blattabgabemechanismus für eine Druckerpresse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US156445A US3167012A (en) 1961-12-01 1961-12-01 Sheet control and spray collection chamber

Publications (1)

Publication Number Publication Date
US3167012A true US3167012A (en) 1965-01-26

Family

ID=22559601

Family Applications (1)

Application Number Title Priority Date Filing Date
US156445A Expired - Lifetime US3167012A (en) 1961-12-01 1961-12-01 Sheet control and spray collection chamber

Country Status (3)

Country Link
US (1) US3167012A (de)
CH (1) CH397727A (de)
GB (1) GB951319A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409290A (en) * 1966-11-14 1968-11-05 Burroughs Corp Sheet stacking apparatus
US3434416A (en) * 1966-12-14 1969-03-25 Testone Electronics Co Printing press excess powder collector
US4083556A (en) * 1975-11-26 1978-04-11 Heidelberger Druckmaschinen Aktiengesellschaft Sheet delivery for rotary printing machines
US4526101A (en) * 1983-10-14 1985-07-02 Ericsson Sylve J D Arrangement for drying printed material
US5497987A (en) * 1993-03-16 1996-03-12 Heidelberger Druckmaschinen Ag Sheet-guiding device
US5931095A (en) * 1996-11-21 1999-08-03 Platsch; Hans Georg Method and apparatus for dusting products, especially printed products
US6241238B1 (en) * 1998-09-18 2001-06-05 Komori Corporation Sheet-like material guiding device of offset printing press
US20060022398A1 (en) * 2004-07-27 2006-02-02 Heidelberger Duckmaschinen Ag Machine for processing a sheet of printing material
US20060261536A1 (en) * 2005-05-20 2006-11-23 Dangelewicz John A Sheet handling

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113750A1 (de) * 1981-04-04 1982-10-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg "bogenausleger fuer rotationsdruckmaschinen mit an endlosen ketten umlaufenden greiferbruecken"
US5001980A (en) * 1988-12-29 1991-03-26 Komori Printing Machinery Co., Ltd. Delivery apparatus for sheet-fed printing press
DE19539757C1 (de) * 1995-10-26 1997-05-22 Roland Man Druckmasch Ausleger für eine Bogenrotationsdruckmaschine
EP0847856A3 (de) * 1996-12-10 1998-12-30 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zur Bestäubung von Bogen
DE19812711C2 (de) * 1998-03-24 2000-04-27 Roland Man Druckmasch Bestäubungseinrichtung in einer Druckmaschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1591954A (en) * 1924-05-16 1926-07-13 American Lithographic Co Sheet-drying mechanism
GB439078A (en) * 1934-11-29 1935-11-28 Jens Andreas Paasche An improved method of and means for preventing offset of ink in printing operations
US2113770A (en) * 1934-03-15 1938-04-12 Steel Engravers Appliance Corp Method and apparatus for drying inked impressions
US2394657A (en) * 1942-02-04 1946-02-12 Frank V Mcmahon Apparatus for preventing offset
US2578744A (en) * 1949-07-26 1951-12-18 Ralph A Rusca Method and apparatus for drying sized or otherwise impregnated textile material
US2610850A (en) * 1948-02-24 1952-09-16 Huck Co Sheet delivery mechanism for printing machines
US2818661A (en) * 1953-11-06 1958-01-07 American Viscose Corp Automatic door and conveying system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1591954A (en) * 1924-05-16 1926-07-13 American Lithographic Co Sheet-drying mechanism
US2113770A (en) * 1934-03-15 1938-04-12 Steel Engravers Appliance Corp Method and apparatus for drying inked impressions
GB439078A (en) * 1934-11-29 1935-11-28 Jens Andreas Paasche An improved method of and means for preventing offset of ink in printing operations
US2394657A (en) * 1942-02-04 1946-02-12 Frank V Mcmahon Apparatus for preventing offset
US2610850A (en) * 1948-02-24 1952-09-16 Huck Co Sheet delivery mechanism for printing machines
US2578744A (en) * 1949-07-26 1951-12-18 Ralph A Rusca Method and apparatus for drying sized or otherwise impregnated textile material
US2818661A (en) * 1953-11-06 1958-01-07 American Viscose Corp Automatic door and conveying system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409290A (en) * 1966-11-14 1968-11-05 Burroughs Corp Sheet stacking apparatus
US3434416A (en) * 1966-12-14 1969-03-25 Testone Electronics Co Printing press excess powder collector
US4083556A (en) * 1975-11-26 1978-04-11 Heidelberger Druckmaschinen Aktiengesellschaft Sheet delivery for rotary printing machines
US4526101A (en) * 1983-10-14 1985-07-02 Ericsson Sylve J D Arrangement for drying printed material
US5497987A (en) * 1993-03-16 1996-03-12 Heidelberger Druckmaschinen Ag Sheet-guiding device
US5931095A (en) * 1996-11-21 1999-08-03 Platsch; Hans Georg Method and apparatus for dusting products, especially printed products
US6241238B1 (en) * 1998-09-18 2001-06-05 Komori Corporation Sheet-like material guiding device of offset printing press
US20060022398A1 (en) * 2004-07-27 2006-02-02 Heidelberger Duckmaschinen Ag Machine for processing a sheet of printing material
US7427064B2 (en) * 2004-07-27 2008-09-23 Heidelberger Druckmaschinen Ag Machine for processing a sheet of printing material
US20060261536A1 (en) * 2005-05-20 2006-11-23 Dangelewicz John A Sheet handling
US7597319B2 (en) * 2005-05-20 2009-10-06 Hewlett-Packard Development Company, L.P. Sheet handling using a ramp and grippers on an endless belt

Also Published As

Publication number Publication date
GB951319A (en) 1964-03-04
CH397727A (de) 1965-08-31

Similar Documents

Publication Publication Date Title
US3167012A (en) Sheet control and spray collection chamber
US3779545A (en) Delivery arrangement
US4651984A (en) Method of and apparatus for accurate-register sheet transport in a printing machine
DE19707157B4 (de) Vorrichtung zum Bestäuben von bewegten flächigen Produkten
JPH0356914B2 (de)
GB849797A (en) Improvements in sheet feeding devices
US2138178A (en) Sheet delivery device for printing machines
US1077399A (en) Paper-feeder.
DE1033225B (de) Bogenanleger fuer Druckmaschinen mit endlosen Saugbaendern
US3556519A (en) Method and apparatus for stacking paper sheets or the like
US3395915A (en) Vacuum stacker apparatus
GB2272892A (en) Chain conveyor for sheets from a printing machine
US3309078A (en) Continuous sheet feeding device having registering means
US2969980A (en) Vacuum slow down device for sheet delivery mechanism
EP0755887B1 (de) Verfahren und Vorrichtung zum pneumatischen Bogenabbremsen im Ausleger einer Bogenrotationsdruckmaschine
US2680615A (en) Pneumatic leather stacking machine
US3118664A (en) Pneumatic sheet stacking mechanism
US3054613A (en) Sheet delivery system
US2589748A (en) Dry printing and developing machine
JPH06191178A (ja) 製本機の表紙供給装置
GB918109A (en) Article conveying mechanism
US4496143A (en) Sheet feeder
GB1239376A (de)
US3550759A (en) Apparatus for transporting tobacco or the like
US2990624A (en) Apparatus for cooling granular material