US1790465A - To the miehle printing - Google Patents

To the miehle printing Download PDF

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Publication number
US1790465A
US1790465A US1790465DA US1790465A US 1790465 A US1790465 A US 1790465A US 1790465D A US1790465D A US 1790465DA US 1790465 A US1790465 A US 1790465A
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United States
Prior art keywords
sheet
transfer
cylinder
grippers
impression
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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
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English (en)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/06—Tripping devices or stop-motions for starting or stopping operation of sheet or web feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed

Definitions

  • the sheet is conveyedV by the transfer gripper mechanism toward the cylinder yat a Vspeed which is accelerated to attain the surface speed of the cylinder at the -moment'when the sheet so conveyed is transferred from the transfer ugrippers -tO the grippers of the impression cylinder.
  • One of the principal objects of my invention is tov provide automatic Yoperating mechanism, whereby, when a-sheetis not p resented to the grippers of the' transfer grip'- per mechanism, the latter is rendered ineffective, while the press itself can still continue to operate if required, so that the sheets.
  • Another object of my invention resldes in the provision of means whereby the transfer gripper mechanism can be'l swung out from its operative position into an inoperative position.
  • Y' Figure l is a partial,sideelevationY of a printing press to which mycinvention is .applied and shows the general arrangement of theparts comprising the improvedA control mechanism;
  • Figure 2 is a fractional plan view of Figure l, indicating the arrangement'of the impression cylinder grippers andA -thef operating.
  • Figure 8 is a partial side elevation showing substantially the same section ofthe press as illustrated in Figure l, but taken fromthe opposite side of the press;
  • Figure 4 shows a fractional cross-section Vof a detail taken along line'll-Ll ⁇ of Figure 3;
  • Figure 6 is adetail sectional view taken through the transfer gripper mechanism and indicating the arrangen'ient of an air duct whereby the pneumatic mechanism for automatically locking the transfer gripper mechanism is controlled;
  • Figure 7 illustrates the relative arrangement of the impression cylinder gripper operating mechanism to the transfer gripper mechanism, the Alatter being shown in its inoperative position, i. e. swung up 180 from the position shown in Figure 1;
  • Figure 8 indicates the arrangement of the transfer gripper actuating mechanism.
  • the printing press to which the invention is applied is of the two-revolution type and comprises a main frame 10 which supports, among other things, an impression cylinder 11 in any suitable manner commonly known in the construction of printing presses.
  • the sheets 12 are conveyed from stock supply means downwardly over the feed table 13 by any preferred mechanism, and the leading edge of each individual sheet is brought to bear against front guides preferably carried on the swingably mounted transfer gripper arm 14 as will be more clearly described hereinafter. ⁇ When a sheet has been properly .presented to the front guides, its leading edge is engaged by the grippers on the arm 14 and the latter is swung away from the feed table 13 and towards the impression cylinder 11 for the purpose of transferring the sheet to the grippers of the latter.
  • the gripper bar 14 extends over the entire width of the sheet feeding or registering mechanism so as to serve for the purpose of straightening out the leading edge of the sheets fed to the transfer grippers, therewith assuring perfect register of the sheets.
  • the speed ofsaid mechanism is accelerated to attain the surface speed of the impression cylinder so that the sheet will be transferred from the transfer grippers to the impression cylinder grippers at cylinder speed.
  • the invention is applied in connection with a two-revolution press as shown it is of advantage to swing the transfer gripper arm 14 forward during one revolution of the cylinder 11 and to return it to its sheet engaging position during the subsequent revolution of lthe cylinder.
  • a preferred form of means to oscillate the transfer gripper mechanism comprises a gear ⁇ sector 16 mounted on the rock shaft 17 which carries the arms 14 of the transfer gripper mechanism.
  • the sector 16 meshes with another gear sector 18, which is pivotally supported on the machine frame at 19.
  • Thev sector 18 is formed with a laterally extending arm 2O to the eXtreme end of which is pivoted an operating rod 21, the free end of which is slidably supported in any suitable manner.
  • a coil spring 22 embraces the rod 21 and acts to push the arm 2O upwardly and the roller 23 against the cam 24, which is keyed to the impression cylinder shaft 25 so as to rotate with the cylinder during the operation of the press.
  • the sector 16 is formed with a recess 26 adapted to receive a plunger 27 of a vacuum mechanism controlled by the air ducts 28 and pin holes 29 in the transfer gripper bar 15.
  • the inner end of the air duct 28 is connected to a nipple 60 of the pneumatic mechanism for holding the transfer gripper mechanism in its inoperative position.
  • Another connection leads from the nipple 31 to a vacuum pump or the like.
  • a diaphragm 38 Within the vacuum boX 32 is arranged a diaphragm 38, which, during normal operation of the press, is in the position indicated in broken lines in Figure 4.
  • the diaphragm 33 is operatively connected with the plunger 27 by means of a stem 34, lever 35 and stem 36 of the plunger 27.
  • the transfer ,gripper shaft 17 carries at its outer end, preferably atthe feeder side of the press, anV eccentric 38 connected'to the free end of the operating rod so that said rod moves up anddown'asthe transfer grip.-v ⁇ pers oscillate between the table 13 and the cylinder .11.
  • This movement of the rod 40 is transmitted to the manually operable trip lever 39 of the press Vby means of lever 4l, rod 42 and lever 43.
  • the lever 41y is mounted to rock about stud 44, while the lever 43 is pivotally mounted at 45 to the machine frame.
  • the trip pedal 39 downwardly, thev ledge 48 provided on the trip pedal will be able upon manual actuation to engage beneath the stop 49, at-which time the impression cylinder will Vbe raised off impression, i. e. will be in its tripped position.
  • Figure l shows the relative cooperating parts in a position just priorto themoment when thek impression cylinder lil-'is tripped, that is to say, the rod. 40 has almostreached its lowermost position.
  • the lever is pivoted at 50 to the machine frame and its free end carries an operating rod 51, which is normally pressed downwardly by means of a ,coil spring 52.
  • the trip mechanism 53 whereby normally the impression cylinder l1- is moved into and out of impression and held in tripped position after operation and locking of the trip pedal 39, may be of any desirable design, such as are well-known in the manufacture of printing presses, andconsequently it does not uform part of my invention. I have therefore not described the trip mechanism in .detail but have merelyindicated lits important parts in Figure l. .3;
  • the. impression cylinder shaft 25 has rigidly ⁇ secured theretoY a disc formed with a stop portion 57 adapted to engage a plunger 58 which projects from the vacuum box 59 when the cylinder l1 is in its raised, i. e. tripped position.
  • the vacuum box 59 is ⁇ connected with ⁇ a vacuum valve 60-by means of a tube V6l within which valve operates a plunger 62, which normally projects from the valve and bears against'the operating bar 54.- The latter, as
  • voperator of the press can shut off the connection from the valve 60 tothe vacuumv pump at will so that air wil-l not be exhausted from the vacuum box 59.
  • Thervacuum boX 59 is pivotallymounted at 64 and is provided with a laterally eXtending arm to which is pivotally secured a Yconnecting rod'65, which in turn is connected with a release lever 66, normally held in the position shownin Figure l bymeansof av tension spring 67,- and mounted on a1 stud 63.
  • the operatingV lever "69 where y tension is appliedto the driving belt 70 of the press by means of a tension pulley 7l, ⁇ 1svheld in itsoperative.pos1t1on,naine ly itis locked by means of the pawl 72 engagingthe teeth of the ratchet 73 provided on the arm 74 of the lever 75, which latter is pivotally mounted at 76.
  • the lever 75 is also formed with an upwardlyextending arm 77, the outer end of which rests o'n the arm 66. f
  • the transfer gripper mechanism can be swung out of its operative position.
  • the transfer gripper arm 14 is shown in its raised position into which position it is swung by means of a handle 113, and Where it is held against operation preferably by means such as indicated in Figure 3, and comprising a plunger 88 engaging Within a recess 89.
  • This plunger can be disengaged from the recess 89 by means of a rod 90 arranged to slide Within the shaft 17 and adapted to be manually operated from the feeder side of the press, by means of a knot or the like, not shown.
  • Figure 8 illustrates the mechanism for opening and closing the transfer grippers 92.
  • This mechanism comprises a rock arm 93 mounted on the transfer gripper arm 14 and carries a cam roller 94 adapted to cooperate with a cam 95, as indicated in broken lines, to open the grippers 92.
  • Said grippers are held in closed position by means of a compression spring 96 exerting pressure against the outer end 97 of the arm 93.
  • the cam 95 Will be oscillated by means of a rod 98, causing the high portion of the cam 95 to depress the roller 94 and open the grippers 92.
  • a similar cam means may be provided for operating the transfer grippers in the other position of the transfer arm, namely Where the grippers 92 take a sheet from the feed table 13, such as indicated in Figure 1.
  • Figure 5 l have illustrated a preferred form of gripper pads cooperating with the grippers of the transfer mechanism. rl ⁇ he gripper pads 99 which are held Within the sockets 100 by means of compression springs 101 are formed With a front stop or guide 102, which is arranged eccentrically to the shaft 103.
  • suitable means for tripping the fountain roller of the inking mechanism, one form of mecha nism for establishing this purpose comprising a lever 107 which is pivoted at 108 to the machine frame.
  • the arm 109 is connected to the bearing of the cylinder 11 so as to move up and down therewith, consequently rocking the lever 107 and transmitting motion to any suitable fountain trip mechanism by means of the rod 110, bellcrank lever 111 and rod 112.
  • I provide a connection with the stop mechanism of the press whereby the press can beconveniently stopped from the delivery end.
  • the combination of sheet feeding mechanism, an impression member, and oscillating sheet transfer means -to convey a sheet of material at an accelerating speedfrom said sheet feeding mechanism to said impression member,fsaid transfer means ative position.
  • the combination'of sheetv feeding mechanism, an impression meinber,ioscillating sheet transfer means tol convey a sheet of'material at an accelerating speed from said sheet feeding mechanism to said impression member,means to svving said transfer means out of its operative position, and means ⁇ vto retain: said transfer l means against movement.
  • the combination of sheet feeding mechanism, an impression cylinder, sheet transfer means to convey a sheet of material from said sheet feeding mechanism to said cylinder, and automatically controlled means adapted to hold said transfer means against movement.
  • the combination of sheet feeding mechanism, an impression cylinder, sheet transfer means to carry a sheet of material from said sheet feeding mechanism to said cylinder, and means controlled by the positionof a sheet to hold said transfer means against movement.
  • the combination ofV sheet feeding mechanism, an impression cyl- 15)inder having sheet engaging grippers, sheet transfer means to convey a sheet of material from said sheet feeding mechanism to said grippers, and under certain conditions adapted to be held against movement, and
  • sheet transfer meansV having register ⁇ stops* and operative-tio convey? a sheet' of m'atedal from saidsheet feeding mechanisml to said cylinder, and means actuated When a sheet is notfin v,proper register with said'stops to hold' said transfer means against movement.
  • the combination of sheet feeding mechanism, an impression member, and oscillating sheet transfer means to convey a sheet of material from said sheet feeding mechanism to said impression member at an accelerating speed, said transfer means being adapted to be swung out of its operative position.
  • the combination of sheet feeding mechanism, an impression member, and sheet transfer means for engaging a sheet of material While at rest on said sheet feeding mechanism and for conveying it at an accelerating speed to said impression member, said transfer means being adapted to be swung out of its operative position.
  • sheet feeding means comprising a sheet transfer member mounted on a rock shaft, operating means to transmit accelerated motion to said shaft, sheet engaging means on said transfer member, and means adapted to pivot about said rock shaft to operate said sheet engaging ⁇ means.
  • sheet feeding means comprising a sheet transfer member mounted on a rock shaft, operating means to transmit accelerated motion to said shaft, sheet engaging means on said transfer member, and cam means adapted to pivot about said rock shaft to operate said sheet engaging means.

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  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
US1790465D 1928-06-15 To the miehle printing Expired - Lifetime US1790465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US310257XA 1928-06-15 1928-06-15

Publications (1)

Publication Number Publication Date
US1790465A true US1790465A (en) 1931-01-27

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Application Number Title Priority Date Filing Date
US1790465D Expired - Lifetime US1790465A (en) 1928-06-15 To the miehle printing

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Country Link
US (1) US1790465A (fr)
FR (1) FR659010A (fr)
GB (1) GB310257A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626564A (en) * 1949-11-16 1953-01-27 John F Banthin Safety stop for bed and cylinder printing presses
US2626563A (en) * 1948-05-25 1953-01-27 John F Banthin Automatic shut-off for printing presses
US2909369A (en) * 1955-05-18 1959-10-20 Linotype Machinery Ltd Sheet-feeding apparatus
FR2178625A5 (fr) * 1972-03-25 1973-11-09 Heidelberger Druckmasch Ag
US4127265A (en) * 1976-05-13 1978-11-28 Heidelberger Druckmaschinen Ag Sheet sensing device in a rotary printing press
US4184674A (en) * 1972-03-25 1980-01-22 Heidelberger Druckmaschinen Aktiengesellschaft Monitoring device for missing and skewed sheets in sheet feeds

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2626563A (en) * 1948-05-25 1953-01-27 John F Banthin Automatic shut-off for printing presses
US2626564A (en) * 1949-11-16 1953-01-27 John F Banthin Safety stop for bed and cylinder printing presses
US2909369A (en) * 1955-05-18 1959-10-20 Linotype Machinery Ltd Sheet-feeding apparatus
FR2178625A5 (fr) * 1972-03-25 1973-11-09 Heidelberger Druckmasch Ag
US4184674A (en) * 1972-03-25 1980-01-22 Heidelberger Druckmaschinen Aktiengesellschaft Monitoring device for missing and skewed sheets in sheet feeds
US4127265A (en) * 1976-05-13 1978-11-28 Heidelberger Druckmaschinen Ag Sheet sensing device in a rotary printing press

Also Published As

Publication number Publication date
FR659010A (fr) 1929-06-24
GB310257A (en) 1929-04-25

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