US2491819A - Sheet delivery mechanism for stop-cylinder printing machines - Google Patents

Sheet delivery mechanism for stop-cylinder printing machines Download PDF

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Publication number
US2491819A
US2491819A US603348A US60334845A US2491819A US 2491819 A US2491819 A US 2491819A US 603348 A US603348 A US 603348A US 60334845 A US60334845 A US 60334845A US 2491819 A US2491819 A US 2491819A
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US
United States
Prior art keywords
sheet
lever
suction
sucker
bar
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
US603348A
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English (en)
Inventor
Lawson Wilfred George
Jenkins Frederick Stephen
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2491819A publication Critical patent/US2491819A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/041—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands and introducing into a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F3/00—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed
    • B41F3/02—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed with impression cylinder or cylinders rotating unidirectionally
    • B41F3/04—Cylinder presses, i.e. presses essentially comprising at least one cylinder co-operating with at least one flat type-bed with impression cylinder or cylinders rotating unidirectionally intermittently; Stop-cylinder presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/042—Intermediate conveyors, e.g. transferring devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/54—Article strippers, e.g. for stripping from advancing elements
    • B65H29/56—Article strippers, e.g. for stripping from advancing elements for stripping from elements or machines

Definitions

  • Figures. 3 and A. are, respectively, a sideielevation and iarear elevation showing .thesucker .bar, its. valve box and ,other.'-detai1s, .on .a larger scale than Figures -1'. andZ, :the-printingcylinder being indicated in dot and dash lines.
  • Figure 15 is a; view:-of the rearendnf the press showing then-conveyorwithfitsframe bars in section, the counter-balancing deviceioriheframe barsandrthe-piling table.
  • bearings L92 storming; part-seer -a abrackettxifll;
  • the lever 8 is oscillated by a cam I which is clamped on a driving shaft I I by a screw I2, as it has to be adjusted or set thereon for a purpose hereinafter explained.
  • the shaft II is driven from the main shaft I29, through gear wheels I2I, I22 fixed, respectively, on the shafts I20 and II.
  • the lever I! has a head I8, Figure 3, for engagement with a flange I8 on the lever 8.
  • the lever I! is not connected to the lever 8 and makes a constant oscillation.
  • the lever I'I makes contact with and thrusts the lever 8 in a direction towards the right hand, as considered with reference to Figure 1, and for convenience is hereinafter termed a contact lever.
  • the sucker bar 5 is fitted with a number of hollow suction fingers 22 having rubber sucker pads 23 for engagement with the tail end of a printed sheet on the printing cylinder each time the cylinder stops.
  • the sucker bar 5 extends along the cylinder 2 and the suction fingers 22 are fitted at suitable intervals.
  • Each suction finger 22 preferably has a split boss 24, Figure 9, embracing the sucker bar 5 and tightened by a screw 25 when the boss is set on the sucker bar '5, so that a hole 29 in the suction bar coincides with the passage 21 of the suction finger.
  • Each suction finger preferably has a cock 28 for controlling the passage 21.
  • the slide valve 33 has two rollers 35 and 36 for engagement, respectively, with a lever 31 and a cam or stop 38, Figure 1, so that it is reciprocated to open and to cut off suction, as required, by bringing the nipple into and out of coincidence with a suction hole 34, Figures 3 and 4, in the face of the valve box.
  • a raising lever 59 has a split boss 5I, Figure 6, which is clamped by a screw 52 to the sucker bar 5.
  • the raising lever 50 has a rod 52' sliding in a lug 53 and surrounded by a spring 54 which tends to thrust the lever 50 upwards and so partly'rotate the sucker bar 5 in one direction to raise the suction fingers 22.
  • the function of the cam 56 is to actuate the lowering lever I5I to rotate the sucker bar '5, against the action of the spring 54, when the printing cylinder stops, so that the suction fingers 22 are moved down with their pads 23 in contact with the tail end of the sheet on the printing cylinder, and will be referred to later in the description of the general operation of the delivery mechanism.
  • is shaped to ensure that the suction fingers 22 will be held in the correct position when presenting the sheet to the mechanical grippers of a conveyor hereinafter referred to. It is secured to the stationary part I92 by a screw I95 passing through a slot I96 in the cam, so as to allow for adjustment of the cam.
  • a stop disc I95 prevents the rod 9'! rising too far.
  • the conveyor for taking the sheets from the suction fingers and for conveying them to the end of the printing machine remote from the printeffect engagement with which have just arrived to receive it.
  • ' stop-cylinder printing press having suction devices for engaging with the tail end of a printed sheet on the printing cylinder of the press when said suction devices are in initial position and for initiating the removal ofthe sheet from the printing cylinder, a conveyor having mechanical grippers for taking the sheet from the suction devices when the printing cycle has been completed and completing its removal from the printing cylinder and conveying it away therefrom, means for carrying the suction devices from their initial position to the conveyor and back to their initial position, and means for arresting said carrying means with their suction devices in their initial position, said arresting means being adjustable to regulate the initial position of the suction devices in accordance to the length of the sheet to be printed, whereby to 0 regulate the movement of said suction device to the tail end of the printed sheet.
  • a sheet delivery mechanism for a stop-cylinder printing press comprising suction fingers for engaging with the tail end of a printed sheet on the printing cylinder of the press and initiating the removal of the sheet therefrom, a sucker-bar carrying said suction fingers, a lever supporting said sucker-bar, said sucker-bar being mounted to oscillate on the lever and said lever being pivotally mounted on the shaft co-axial with that of the printing cylinder, a conveyor having mechanical grippers, means for oscillating said sucker-bar relatively to its supporting lever for the purpose of moving the suction fingers into and out of their operative positions, and means 'for moving the supporting lever towards the said conveyor to move the suction fingers towards the conveyor to allow the mechanical grippers ther of to take the sheet from the suction fingers to complete the removal of the sheet from the printing cylinder after the printing cycle has been completed, and means for arresting said lever in its initial position, said arresting means beingadjustable to determine said initial position to suit the length of sheet to be printed, whereby to effect engagement with the tail end of the printed sheet
  • means including a cam for oscillating the contact lever, a shaft for the cam, means for adjustably fiXing the cam on its shaft for the purpose of setting it on its shaft to suit the length of sheet being printed, and a sprocket for driving the conveyor, said sprocket being fixed to the cam for the purpose of ensuring simultaneous adjustment of the cam and the sprocket.
  • a sheet delivery mechanism for a stop-cylinder printing press said means for oscillating the sucker-bar relatively to the lever supporting it, for the purpose of lowering the suction fingers on to a sheet and of raising them to lift the sheet, comprising a wheel freely mounted on a shaft co-axial with the shaft of the printing cylinder, a cam adjustably secured to said wheel, means for rotating said wheel, a follower lever carried by the sucker-bar and having a roller engaging with said cam, and a raising lever on the sucker shaft and a return spring for actuating said raising lever.
  • a sheet delivery mechanism for a stop-cylinder printing press said sucker-bar being provided with a suction valve and an air inlet valve, means being providedto open the suction valve and to close the air inlet valve when the suction fingers are to engage with a sheet and to close the suction valve and open the air inlet valve when the suction fingers are to release a sheet.
  • a sheet delivery mechanism for a stop-cylinder printing press comprising suction fingers for engaging with the tail endof a printed sheet on the printing cylinder of the press and initiating the removal of the sheet therefrom, a suckerbar carrying said suction fingers, an endless chain conveyor having mechanical grippers, means for moving said suction fingers relatively to the printing cylinder to engage with a sheet thereon, means for moving said sucker-bar, when the suction fingers are in engagement with a sheet, towards the conveyor to enable the suction fingers to present the sheet to the mechanical grippers thereof, and means for returning said sucker-bar and its suction fingers to their initial positions, a
  • the suction valve consisting of a plate pivoted on the face of the box to control the suction opening and carrying a suction pipe nipple, means for moving said plate in one direction touncover the suction opening and bring the nipple coincident there- 2 with and means for closing the air valve when REFERENCES CITED
  • the following references are of record in the file of this patent:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge By Other Means (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US603348A 1944-08-03 1945-07-05 Sheet delivery mechanism for stop-cylinder printing machines Expired - Lifetime US2491819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14856/44A GB582102A (en) 1944-08-03 1944-08-03 Improvements in sheet delivery mechanism for stop-cylinder printing machines

Publications (1)

Publication Number Publication Date
US2491819A true US2491819A (en) 1949-12-20

Family

ID=10048701

Family Applications (1)

Application Number Title Priority Date Filing Date
US603348A Expired - Lifetime US2491819A (en) 1944-08-03 1945-07-05 Sheet delivery mechanism for stop-cylinder printing machines

Country Status (5)

Country Link
US (1) US2491819A (enrdf_load_stackoverflow)
BE (1) BE464123A (enrdf_load_stackoverflow)
CH (1) CH249388A (enrdf_load_stackoverflow)
DE (1) DE845045C (enrdf_load_stackoverflow)
GB (1) GB582102A (enrdf_load_stackoverflow)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US305798A (en) * 1884-09-30 Sheet-delivery apparatus for printing-machines
US1141277A (en) * 1914-02-07 1915-06-01 Thomas H Rogers Sheet transporting and stacking apparatus.
US1907452A (en) * 1931-04-22 1933-05-09 Spiess Georg Stop-cylinder printing machine
US2250657A (en) * 1940-02-24 1941-07-29 American Type Founders Inc Printing press

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US305798A (en) * 1884-09-30 Sheet-delivery apparatus for printing-machines
US1141277A (en) * 1914-02-07 1915-06-01 Thomas H Rogers Sheet transporting and stacking apparatus.
US1907452A (en) * 1931-04-22 1933-05-09 Spiess Georg Stop-cylinder printing machine
US2250657A (en) * 1940-02-24 1941-07-29 American Type Founders Inc Printing press

Also Published As

Publication number Publication date
CH249388A (de) 1947-06-30
BE464123A (enrdf_load_stackoverflow)
DE845045C (de) 1952-09-15
GB582102A (en) 1946-11-05

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