US2531647A - Stereotype plate forming and finishing machine - Google Patents

Stereotype plate forming and finishing machine Download PDF

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Publication number
US2531647A
US2531647A US695964A US69596446A US2531647A US 2531647 A US2531647 A US 2531647A US 695964 A US695964 A US 695964A US 69596446 A US69596446 A US 69596446A US 2531647 A US2531647 A US 2531647A
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United States
Prior art keywords
plate
cutters
machine
cutter
section
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US695964A
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English (en)
Inventor
Oscar C Roesen
Charles L Ricards
Paul L Tollison
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Wood Newspaper Machinery Corp
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Wood Newspaper Machinery Corp
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Priority to US695964A priority Critical patent/US2531647A/en
Priority to FR942187D priority patent/FR942187A/fr
Priority to CH266383D priority patent/CH266383A/fr
Priority to US52322A priority patent/US2572666A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41D—APPARATUS FOR THE MECHANICAL REPRODUCTION OF PRINTING SURFACES FOR STEREOTYPE PRINTING; SHAPING ELASTIC OR DEFORMABLE MATERIAL TO FORM PRINTING SURFACES
    • B41D5/00—Working, treating, or handling stereotype plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/054—Fluid control interrelated with machine tool mechanism
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/064—Ambulatory cutter with fluent conduit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/083—Fan coaxial with cutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/093—Plural discharge loci
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/096—Mechanical removal assistant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/33—Stereotype-plate finishing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303976—Milling with means to control temperature or lubricate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/306664—Milling including means to infeed rotary cutter toward work
    • Y10T409/30756—Machining arcuate surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/306664—Milling including means to infeed rotary cutter toward work
    • Y10T409/307784—Plural cutters

Definitions

  • This invention relates to a stereotype plate linishing machine and more particularly to an improved machine of this nature incorporating means by which pockets may be formed in the inner surfaces of such plates for use in clamping the plates to the cylinder of a printing press.
  • the machine of the invention is useful in finishing semi-cylindrical stereotype plates that are secured to the press cylinders by clamping elements that hold the plates under circumferential tension.
  • the plates are provided with a series of recesses or pockets in their inner surfaces adjacent their straight edges for the reception of clamping means' on the press cylinders.
  • the machine of the present invention forms such pockets by milling them in the precast plate.
  • the improved machine preferably incorporates a stereotype plate finishing ⁇ section which shaves or finishes the inner surfaces of the cast plates, and a machine including this mechanism is disclosed in United States Patent No. 2,364,032.
  • the improved machine further inilldes an improved plate cooling and drying sec- It is an object of the present invention to provide a machine of the type described which accurately and rapidly forms a plurality of pockets in the inner surfaces of stereotype plates and performs this operation on a succession of such plates automatically.
  • Other objects include the provision of an improved machine of this type which is capable of forming pockets in a succession of plates with a high degree of accuracy and uniformity.
  • a particular feature of the lnvention resides in the provision of a plurality of milling cutters in gang arrangement and mounting and operating means therefor whereby a plurality of pockets may be simultaneously formed l of the arrows;
  • inventions ofthe machine include improved means for-.coordinating the control of the drive that moves the milling cutters into engagement with the' plates and the cutter rotating drive so as to prevent injury to the machine or to the plates if the milling cutters are not rotated, improved control means for permitting the plates to move through the pocket milling section of the machine without having pockets milled therein, and improved means for mounting and lubricating the milling cutters and for disposing of the chips from the milling operation.
  • Another feature of the machine comprises an improved combined plate cooling and drying mechanism and means for controlling ⁇ the operation thereof.
  • Other objects, advantages and Fig. 3 is a transverse section on an enlarged scale taken along the line 3-3 of Figs. 1 and 2 and viewed in the direction of the arrows;
  • Fig.. 4 is a sectional view taken along the line 4--4 of Fig. 2 and viewed in the direction of the arrows;
  • Fig. 5 is a transverse section taken along the line 5-5 of Fig. 2 and viewed in the direction oi' the arrows;
  • Fig. 6 is a sectional view taken along the line ⁇ 6 6 -of Fig. 5;
  • Fig. "I is a transverse section taken along the line 'i-l of Fig. 2 and viewed in the direction of the arrows;
  • Fig. 8 is a partial transverse section taken on the line 8 8 of Fig. 2 and showing the parts in the positions occupied when a plate is received into or delivered from the pocket milling section of the machine;
  • Fig. 9 is a partial transverse'section similar to Fig. 8, showing the parts in the positions occupied when pockets are being milled in the plate:
  • Fig. 10 is a sectional elevation of a. gang of pocket millingcutters employed in the disclosed embodiment
  • Fig. 11 is a sectional view illustrating the action of the cutters in milling pockets in a plate
  • Fig. 12 is a plan view of the two gangs of cutters and their drive shafts illustrating the relative direction of rotation of the cutters;
  • Fig. 13 is an enlarged sectional view taken along the line l3-I3 of Fig. 10 showing the construction of a cutter skirt;
  • Fig. 14 is a bottom plan view of a cutter rocking cam, taken along the line M--M of Fig. 10;
  • Fig. 15 is a plan view of the top of the cutter rocking cam mechanism taken along the line l-ofFig. 10;
  • Fig. 16 is a discharge end view of the cooling and drying section of the machine with certain of the parts removed or broken away to show the interior construction
  • Fig. 17 is a fragmentary elevation, partly in' section, of the cutter driving motor and the control device driven thereby;
  • Fig. 18 is a sectional view of the control device taken along the line
  • Fig. 19 is a side elevation of the pocket milling section of the machine showing the plate stop lockout and the cutter lubricator mechanism and control;
  • Fig. 20 is a sectional view taken along the line 20-20 of Fig. 19, showing the ubricator operating mechanism
  • Fig. 21 is a sectional view taken along the line 2
  • Fig. 22 is a sectional view taken along the line 22-22 of Fig. 21;
  • Fig. 23 is a side elevation of the complete machine showing the driving means for the main central shaft thereof;
  • Fig. 24 is an enlarged elevation of the control cam on the main central shaft, taken along the line 24-24 of Fig. 23;
  • Fig. 25 is a wiring diagram of the apparatus for controlling the supply of water and air to the cooling and drying section of the machine.
  • Fig. 26 is a wiring diagram of the control system for the machine driving motors.
  • the mechanism illustrated in Figs. 1 and 2 constitutes generally the pocket milling section M and the cooling and drying section C of a plate ilnishing machine.
  • the machine also includes a plate shaving section S, the discharge end of which is illustrated at the right of Figs. l and 2.
  • the entire machine is illustrated in Fig. 23.
  • the plate shaving section S is disclosed in United States Patent No. 2,364,032, and it will not be described in detail herein. It should be understood that the shaving section includes a shaving arch with a central main shaft
  • 02 is provided at the discharge end of the arch
  • a spring is employed to bias the stop upward and so to maintain the follower
  • a stereotype plate moves by gravity along the inclined path defined by the rollers I8, I8 and
  • the plate then moves along the plate lifting rollers 2, 2' in the milling section M until it comes t0 rest with its lower curved edge engaging the plate stop at the lower end of the pocket milling section, as shown at P in Fig. 2.
  • This pocket milling section includes an arch liner
  • 40 in turn is attached to the main frame
  • Bolts I1 are provided to hold the arch
  • the pocket milling section M like the shaving section S preceding it, is provided with mechanism for lifting the individual plates from the lower positions in which they move into and from the section to fixed raised positions in contact with the arch liner
  • the lifting mechanism of the pocket milling section is operated by the lifting shafts 4, 4 which the torsionally connected to the corresponding shafts 3 of the shaving section by studs 5 and 5' connected between levers 1 and 1' on the shafts 4 and 4' and corresponding levers on the shaving section lifting shafts, one of which isy shown at 6 in Fig. 1.
  • the shafts 4 and 4 are rocked simultaneously with the corresponding shafts 3 of the shaving section by a link 8 connected to the studs 5 and 5 at its opposite ends (Fig. 3).
  • a cam follower 9 secured to the link 8 engages a cam I0 on a shaft
  • the link 8 is provided with a central elongated opening
  • 4 transmit driving power from the main shaft to drive the shaft
  • the plate lifting mechanism of the pocket milling section is of the same construction as that illustrated and described in detail in Patent No. 2,364,032 above referred to, and a detailed description thereof will not be given herein.
  • the lifting mechanism as best shown in Figs. 8 and 9 comprises corresponding lifting parts adjacent opposite sidesof the machine operated respectively by the shafts 4 and 4.
  • the coresponding oppositely disposed parts are designated by like reference characters bearing distinctive exponents.
  • the rollers 2 and 2 are connected to lifting bars
  • 20 have ledges
  • the motion of the lifting bars is such that the plate is pinched slightly as it is raised so that its edges pass upward without striking the arch liner
  • This motion is provided by a series of levers operated
  • 00 is fixed to the shaft 4 and connected to the lifting bar
  • a pinching fork lever I3 is carried by a fixed pivot
  • 3 is pivotally connected to a stud
  • a lever I0. fulcrumed on a iixed stud I9 pivotally engages the stop at
  • is carried by the opposite end of the lever I8 and engages a cam 2
  • a compressed spring 20 surrounds a rod
  • the lower end of the spring 20 engages a xed bracket
  • the shaft 23 is connected to the main shaft by interconnected flanges 280 and 20
  • is so shaped as to lift the stop I in synchronism with the action of the above described plate lifting mechanism.
  • the stop I is extended to hold the plate against movement out of the pocket milling section when the plate moves into this section and thereafter while the plate is lifted to and lowered from its clamped position, and the stop is retracted to move below the plate and so release it for movement out of the milling section after the plate has been lowered following a pocket milling operation.
  • again extends the stop to a position to arrest the movement of the next successive plate fed into the pocket milling section.
  • cam I 54 iixed to the outside of the machine frame around the rod
  • 54 permits the rod
  • this may be accomplished by locking the plate stop in its lower position, whereby plates thereafter feed from the shaving section into the pocket milling section, pass directly through the milling section to the cooling section C beyond it without being lifted into the milling arch or milled.
  • a collar is ixecl to the lower end of the sleeve
  • a lateral opening is formed in the collar
  • passes out through the side of the machine frame and carries an operating knob
  • a series of spaced pockets are simultaneously milled in the inner surface of each plate adjacent each edge thereof by two sets or gangs of spaced milling cutters, the cutters of each set being mounted in a common supoprt and manipulated in unison.
  • the cutter mounting element for each gang of cutters comprises an elongated cutter bar 24, 24', one of which, namely, the rearward cutter bar 24', is shown in section in Fig. 10.
  • the cutter bars have elongated cylindrical end members. shown at and 8
  • a cylindrical recess 34 is provided beyond the end journal 8
  • the yoke 58 connects the two cutter bars 24 and 24 to cause them to reciprocate in unison longitudinally along their axes in their end bearings (Fig. 7).
  • a cam roller 31 is rotatably secured to the center of the yoke 38 and engages a cam groove 56 in a cam 36 fixed to the main central shaft 23 (Figs. 2 and 7).
  • the cam 35 is shaped to reciprocate the two cutter bars 24 and 24' from the position shown in Figs. 2 and 10 toward the upper or entrance end of the pocket milling section M and back again during each operating cycle of the machine, this reciprocation taking place while the plate P is held in its raised position as shown in Fig. 9.
  • Each cutter bar carries a gang of pocket milling cutters 25, 25. In the disclosed embodiment, four such cutters are provided on each cutter bar. As shown in Figs. 8, 9 and 11, the cutters are shaped to cut pockets K. K of generally hook shaped section in the inner surfaces of the stereotype plates near their straight side edges. The number of cutters employed on each cutter bar is the same as the number of pockets cut in each side of the plate.
  • the cutters 25 are ilxed to the outer ends of parallel spindles 2l' journaled in anti-friction bearings 88' in the cutter bar 24'. The spindles extend upward radially from the axis about which the cutter bar turns and along which it reciprocates in the bearings 82 and 83.
  • An auxiliary cutter 25' is provided below each cutter 25' to remove any burr or protuberance that may be formed by the cutter 25 along the lower edge of the pocket.
  • 32' is fixed to each lof the spindles 21' below the cutter 25 thereon, and is provided with radially extending fins or ridges
  • Each cutter spindle 21' has iixed thereto a bevel gear 28' within a gear case 89' in the cutter bar 24.
  • a central cutter drive shaft 30' is journaled in the cutter bar coaxially with its end portions 80' and 8
  • An elongated drive pinion 35' is xed to the end of the drive shaft 30' beyond the lower end of the cutter bar as shown in Fig. 10.
  • the lower end of the shaft 30 is slidably journaled in the frame of the machine at 93.
  • mounted from the machine frame on a bracket 32 drives the pinions of the two cutter drive shafts through the gears 33 and 34 (Fig. 2).
  • a plurality of bevel gears 29 and 95' are xed to the drive shaft 30' within the gear case 89' of the cutter bar 24.
  • the bevel gears 29' engage cooperating bevel gears 28 fixed to the spindles 21' of alternate cutters, and the oppositely disposed bevel gears 95' engage the bevel gears 28' on the spindles of the intervening cutters, whereby the adjacent cutters are rotated in opposite directions.
  • This arrangement insures that the teeth of adjacent pairs of cutters move in the same direction toward or away from the plate being milled, so that chips carried by the cutter teeth moving out of the plate are l thrown toward the center of the machine and are not thrown into cutter teeth that are moving toward the plate.
  • the lodging of a substantial amount of chips in or between cutter teeth that are entering the plate metal may cause inaccuracies in the cutting operation.
  • the rotational arrangement of the cutters of the two sets 25 and 25' is such that the cutters of each set throw chips toward the center of the machine from between each adjacent pair of cutters of each set, and the oppositely disposed cutters 25 and 25 rotate in opposite directions. This rotational relation and the arrangement of the bevel gears 29 and 29', 95 and 95' for producing it are clearly illustrated in Fig. 12.
  • 34 are respectively provided on the two cutter bars 24 and 24. As shown in Figs. 8, 9 and l0, these hoods extend substantially vertically along the inner sides of the cutter bars and the cutters thereon, and curve outwardly over the upper ends of the cutters.
  • the hoods are fixed to the cutter bars by means of nuts
  • the chips from the cutters 25, 25 are thrown inward as explained and are deflected downward by the hoods as indicated by the arrows in Figs. 8 and 9.
  • the chips fall into a chute
  • 39 is carried by a shaft
  • the cam plates 94 and 94' areformed integral with or fixed to plates 91 and 9 1' which are adjustably clamped to the lower face of a frame member 98 in positions to fix the cam plates 94 and 94 in openings in this frame member, as shown in Figs. 10, 14 and 15.
  • Theplates 91 and 91' have lateral inner slots 99 and 99' thereinfor the reception of a central key
  • 42 similarly lxed to the frame member 93 engage oppositely disposed slots
  • the plates 91 and 91 are clamped to the frame member 93 by bolts
  • Fig. 11 The motion imparted to the pocket milling cutters by the cam grooves 4
  • a lubricator L is cmployed to supply lubricant for this purpose.k
  • the lubricator L is of known construction in which a plunger type mechanism pumps lubricant from a reservoir
  • the lubricator L is carried by a bracket
  • the lubricator L is adjustable laterally of the machine to vary the length of the stroke of the lever
  • 65 extends laterally in the bracket
  • 59 passes inside the machine frame through an opening and la 9 ,connected to a xed centrally disposed T
  • 88 lead from the T
  • Eachoi' these headers is provided with tour outlets in the iorm of variable oriilce metering units
  • 18' insure that equal amounts of lubricant are delivered to the several cutters of each gang unit.
  • 12 is pivotally secured to the top oi' the lubricator reservoir
  • 18 is connected by ball and socket joints between the outer end of the lever
  • the successive plates P pass into the cooling and drying section C of the machine along the rollers
  • the stops 48 and 48' are respectively carried on upwardly extending arms
  • 82' which are slidabiy and rotatably carried on ilxed stub shafts
  • Coiled compression springs one of which is shown at
  • the two cutter bars 24 and 24' and oppositely disposed cam extentions 88 and 88' are provided on these cams.
  • the stops 88 and 88' are biased toward their outward plate stoppinglpositions, and the rollers
  • the stops 88 and 48 are retracted to release a plate P from the cooling and drying section C at the end ot each cooling and drying cycle, and are returned to stopping position immediately after the plate has moved out of the cooling section.
  • the cooling section contains a lower arch shaped spray casting
  • 88 therein respectively cover the water conducting depressions
  • 88 serve as nozzles to spray water from the depressions
  • Water is conducted into the depressions
  • 84' have imperforate side extensions forming skirts
  • An under air pipe 282 extends along the top of the casting
  • An extension 288 of this pipe 282 is connected through the pipe 284 to a solenoid operated air supply valve 288 (Fig. 1).
  • An arch shaped outer water manifold i288 is suitably supported on extensions 289, 288' of the main frame intermediate the ends of the cooling and drying section, and extends close to and above the path of a plate in this section.
  • 8 are connected to and extend in opposite direction from the manifold 288 along the length of the cooling and drying section and are provided with downwardly directed openings 2
  • 2 conducts water from the pipe 288 to the manifold 288 (Figs. 1 and 16).
  • the frame I5 forms troughs 2
  • ! extends above the plate path .lust below the lower ends of the water spray pipes 2
  • a plurality of holes 2I8 extend through this pipe 2
  • 1 is connected to the arcuate air pipe 2
  • 1 is connected to the air supply pipe 204 (Fig. 1).
  • 8 is provided for the cooling and drying section C, and handles 2
  • the supply of both cooling water and drying air to each plate in the combined cooling and drying section C is primarily governed by the movement of a plate into this section, the successive supply of first water and then air being controlled by the cyclic timing rotation of the main shaft of the machine. With this arrangement, the supply of water and air is initiated only if a plate is present in the cooling and drying section.
  • the plate movement responsive means for providing ,this control is shown in Figs. 5 and 6 and includes a pair of rollers 41 and 41' disposed at opposite sides of the machine in the path of the opposite side edges of the plates and adjacent the lowermost of the plate carrying vrollers
  • the rollers 41 and 4l'.r ⁇ are respectively carried by arms 48 and 48' pivotally connected to the frame at 49, 49'.
  • Operating rods 220 and 220' are respectively pivotally connected to the roller arms 48 and 48 and pass through stuiiing glands 22
  • the lower ends of the rods 220, 220' are respectively pivotally connected to crank arms 222, 222' fixed to a transverse shaft 223 journaled at its end in the machine frame.
  • a counterweight 224 adjustably supported on a crank arm 225 fixed to the shaft 223 normally biases the connected mechanism so as to move a switch operating arm 225', which is fixed to the shaft 223 to a position to depress the plunger 225 of a switch 19 and so open the contacts 221 of this switch (Figs. 6 and 25).
  • the rollers 41 and 41' are lifted slightly above the path of the lower side edges of a plate P supported by the conveying rollers
  • Vifhen a plate moves down into the cooling and drying section and its leading end approaches the stops 43 and 43', its side edges strike and depress the rollers 41 and 41 and so turn the shaft 223 clockwise as viewed in Fig. 6, permitting the plunger 22B of the switch 19 to move outward and close the contacts 221 of the switch.
  • This switch closure supplies current to successively energize the solenoids which open the water and air valves 201 and 205 through control mechanism described below.
  • the main central shaft Il of the machine is driven by a motor 228 carried by a bracket 229 at the upper end of the machine above the shaving section S.
  • the motor 228 drives the shaft Il through the gear train 230, the worm 23
  • the upper end of the shaft ll carries a cam 84 which extends around substantially one-half the circumference of the shaft and cooperates with the operating lever 235 of a switch 85.
  • the arrangement is such that when the operating arm 235 is depressed by the cam 84, the movable contact 23S of the Switch engages the stationary com u disc 250 is rotatabIy supported from a 12 tacts 231 thereof and completes an energizing circuit for the solenoid winding 238 of the water valve 205, provided the switch 19 operated by a plate in the cooling and drying section C has been closed as described above.
  • the energizing circuit for the water valve solenoid 238 is readily apparent from the wiring diagram (Fig. 25).
  • the cam u closes the switch ss just after the point in the cycle of operation at which the plate stop l at the exit end of the milling section M has been retracted to permit a plate to pass into the cooling and drying section.
  • the machine of the invention incorporates control means acting to deenergize the main shaft drive motor 228 if and when rotation of the milling cutters is discontinued for any reason.
  • is employed to maintain the enaucun? 123 bearing zsl lnaxlal alignment with-and closely adjacent the disc 24
  • the free disc 250 carries Y a movable contact 252 cooperating with a ilxed contact 253 carried by the housing 246.
  • a weight 254 biases the free disc 250 to turn in a direction to separate the contacts 252 and 252 when the motor 3l is not'operating, a stop 255 being provided to limit contact separating rotation of the disc.
  • is obtained from any sultable source represented by the wires AC and is connected through a main switch 256 and the, wires 251, 258 and 259 to the fixed contacts 260, 26
  • a manually operable safety switch 263 located at the machine is connected between the contactar R and two of the leads 264 and 265 connected in parallel to the two motors 228 and 3
  • the closing solenoid 266 of the contactor R When the button designated Start" is depressed, the closing solenoid 266 of the contactor R. is energized through a circuit including the line wire 259, wires 261 and 268, movable contact of the Start button, wire 269, movable contact of the Stop button, wire 210, safety switch 263, Wire 21
  • Energization of the solenoid 256 closes the movable contacts of the contactor R, supplying energy from the line 251 to the motor lead 213 through the wire 214, from the line 258 to the motor lead 264 through the wire 215 and from the line 259 to the lead 265 through the wire 216. This energizes both of the motors 228 and 3
  • causes its rotation and so closes the contacts 252 and 253 of the control device D. Thereafter, when the operator releases the Start button, the energizing circuit for the contactor solenoid 266 is maintained through the contacts 252 and 253 of the device U, the wire 261, the movable contact 211 of the contactor R and the wires 218 and 218. If for any reason, the cutter driving motor stops rotating, the contact 252 of the device ll is moved away from the contact 253 thereof. the described holding circuit for the contactor solenoid 266 is broken and the contactor R opens, de-energizing the main shaft drive motor 22H8. Both of the motors 3
  • the main central shaft made up of the interconnected aligned shafts and 23 governs the cyclic operation of all of the machine sections.
  • a cycle of operations is performed on a plate in each of the several machine sections during each revolution of the shaft.
  • another plate has pockets milled therein in a pocket milling.
  • section M and a third plate is cooled and dried in the cooling and drying section C.
  • the interval during which each plate remains in a given section is controlled byrthe stops
  • the rotation of the main central shaft governs the supply of water to cool the plates for substantially half the cycle during which they remain in the section C. and to cut oil' the water supply and direct jets of air to strip the water from the plate during the remaining half of the operating cycle. Air supply is continued during the movement of the plate out of the cooling and drying section Cso that air from the upper arched air pipe 2li strips water from the upper surface of the plate as it moves out of the cooling and drying section.
  • a support fora semi-cylindrical p1atea cutter bar means for mounting said cutter bar to rock about and slide along an axis parallel to the axis of a plate in said support, a plurality of parallel cutter spindles journaled in said cutter bar and extending radially of said bar axis, a said spindles, means for simultaneously rotating said spindles, and means for moving said cutter bar longitudinally along its axis and for rocking said cutter bar about said axis during its longitudinal movement, whereby all of said cutters are moved in unison into contact with and along the interior surface of a plate on said support.
  • a drive shaft connected to operate said plate lifting means, a pair of spaced elongated parallel cutter bars extending parallel to the axis of said arch adjacent opposite sides thereof, journals supporting said ⁇ respective cutter bars for rocking movement about and longitudinal movement along their longitudinal axes, a plurality of rotary'cutter's carried on parallel spindlsjurcutter xed to each of naled in and extending radially of the axis of each of said cutter bars, a cam driven by said drive shaft for reciprocating said cutter bars in unison in timed relation to the operation of said plate lifting means, cams adjacent said respective cutter bars fo; ⁇ rocking said bars about their axes as they reciprocate, whereby the cutters of said respective bars are moved in unison into engagement with opposite inner surfaces of a plate on said arch while the cutter bars are reciprocated, and means for simultaneously rotating all of the cutters
  • an arch for supporting a semi-cylindrical stereotype plate a pair of spaced parallel elongated cutter bars disposed adjacent opposite sides of said arch parallel to its inner surface and adjacent its opposite side edges, a gang oi' milling cutters supported on each of said cutter bars, each gang comprising a plurality o1' rotary cutters carried on parallel aligned spindles extending upward from the cutter bar substantially radially of its longitudinal axis, means for simultaneously rotating all of said cutters, means for reciprocating said cutter bars along and rocking them about their longitudinal axes whereby said gangs of cutters are moved in unison into and longitudinally of the inner surfaces of a plate in said arch, and a hood secured to each of said cutter bars and extending upwardly therefrom between the cutters thereon and the cutters 'of the opposite cutter bar.
  • an arch for supporting a semicylindrical stereotype ⁇ plate a pair of spaced parallel elongated cutter bars disposed adjacent opposite sides of said arch parallel to its inner surface and adjacent its opposite side edges, a gang of milling cutters supported on each of said cutter bars, each gang comprising a plurality of rotary cutters carried on parallel aligned spindles extending upward from the cutter bar substantially radially of its longitudinal axis, means for simultaneously rotating the adjacent cutters of each of said gangs in opposite directions, means for reciprocating said cutter bars along and rocking them about their longitudinal axes whereby said gangs of cutters are moved into and longitudinally of the inner surfaces of a plate in said arch, and a hood secured to each of said cutter bars and extending upwardly therefrom between the cutters thereon and the cutters of the opposite cutter bar.
  • an arch for supporting a semicylindrical stereotype plate a pair of spaced parallel elongated cutter bars disposed adjacent opposite sides of said arch parallel to its inner surface and adjacent its opposite side edges, a gang of milling cutters supported on each of said cutter bars, each gang comprising a plurality of rotary cutters carried on parallel aligned spindles extending upward from the cutter bar substantially radially of its longitudinal axis, means for simultaneously rotating all of said cutters, means for reciprocating said cutter bars along and rocking them about their axes whereby said gangs of cutters are moved into and longitudinally of the inner surface of a plate in said arch, a hood secured to each of said cutter bars -and extending upwardly therefrom inside the cutters thereon and over the tops of the cutters, a lubricant supply device, means carried by each of said hoods over said cutters for dropping lubricant on said cutters. and exible ducts con- 16 e n
  • plate supporting means adjacent opposite sides of said arch for permitting a plate to move by gravity longitudinally beneath said arch, a plate stop adjacent the lower end of said arch and movable between an extended position for arresting movement of a plate beneath said arch and a retracted position for permitting a plate to move out from under said arch, plate lifting means for lifting a plate into said arch, intermittently operated drive means for successively moving said plate stop to its extended position and then operating said plate lifting means. and means for preventing movement of said plate stop to its extended position by said drive means whereby a plate may move through and out of said arch without being lifted by said plate lifting means.
  • plate supporting means adjacent opposite sides of said arch for permitting a plate to move by gravity longitudinally beneath said arch, a plate stop adjacent the lower end of said arch and movable between an extended position for arresting movement of a plate beneath said arch and a retracted position for permitting a plate to move out from under said arch, at least one rotary pocket milling cutter within said arch movable laterally thereof into milling engagement with a plate in said arch, drive means for successively moving said plate stop to its extended position and then moving said cutter into contact with a stopped plate, and means for preventing movement of said plate stop to its extended position by said drive means whereby a plate may move through and out of said arch before said cutter is moved into engagement with said plate.
  • plate supporting means adjacent opposite sides of said arch for permitting a plate to move by gravity longitudinally beneath said arch, a plate stop adjacent the lower end of said arch and movable between an extended position for arresting movement of a plate beneath said arch and a retracted position for permitting a plate to move out from under said archl at least one rotary pocket milling cutter within said arch movable laterally thereof into milling engagement with a.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US695964A 1946-09-10 1946-09-10 Stereotype plate forming and finishing machine Expired - Lifetime US2531647A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US695964A US2531647A (en) 1946-09-10 1946-09-10 Stereotype plate forming and finishing machine
FR942187D FR942187A (fr) 1946-09-10 1947-02-12 Machine à façonner et finir les clichés
CH266383D CH266383A (fr) 1946-09-10 1947-03-18 Machine pour meuler des poches dans des clichés de stéréotypie.
US52322A US2572666A (en) 1946-09-10 1948-10-01 Apparatus for cooling and drying stereotype plates and for effecting the controlled application of cooling and drying fluids thereto in synchronism with the conveying thereof

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US695964A US2531647A (en) 1946-09-10 1946-09-10 Stereotype plate forming and finishing machine

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2613578A (en) * 1951-05-29 1952-10-14 Wood Newspaper Mach Corp Machine for milling pockets in curved stereotype plates
US2664788A (en) * 1945-11-16 1954-01-05 Goss Printing Press Co Ltd Stereotype finishing machine
US2736947A (en) * 1953-01-23 1956-03-06 Time Inc Plate grooving machine
US2743501A (en) * 1953-01-22 1956-05-01 Wood Newspaper Mach Corp Saw chip collector
US3192833A (en) * 1963-06-06 1965-07-06 Edward W Carroll Milling machine for cutting air vents in glass molds
US3257706A (en) * 1962-06-05 1966-06-28 Renault Machine Tools U K Ltd Automatic in-line transfer machine
US3478377A (en) * 1967-06-08 1969-11-18 Anvil Products Inc Threading machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1313775A (en) * 1919-08-19 winkler
US1397006A (en) * 1918-06-20 1921-11-15 Packard Motor Car Co Machine-tool
US1418490A (en) * 1922-06-06 sproul
US1616256A (en) * 1925-08-29 1927-02-01 Oscar Meyer Machine for grooving printing plates
US1843471A (en) * 1926-06-03 1932-02-02 Wood Newspaper Mach Corp Precision plate cooling device
US2060358A (en) * 1930-03-31 1936-11-10 Wood Newspaper Mach Corp Apparatus for cooling printing plates
US2273963A (en) * 1936-07-17 1942-02-24 Jereczek Viktor Switching device, especially for machine tools
US2381921A (en) * 1943-07-26 1945-08-14 U S Automatic Corp Milling and marking machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1313775A (en) * 1919-08-19 winkler
US1418490A (en) * 1922-06-06 sproul
US1397006A (en) * 1918-06-20 1921-11-15 Packard Motor Car Co Machine-tool
US1616256A (en) * 1925-08-29 1927-02-01 Oscar Meyer Machine for grooving printing plates
US1843471A (en) * 1926-06-03 1932-02-02 Wood Newspaper Mach Corp Precision plate cooling device
US2060358A (en) * 1930-03-31 1936-11-10 Wood Newspaper Mach Corp Apparatus for cooling printing plates
US2273963A (en) * 1936-07-17 1942-02-24 Jereczek Viktor Switching device, especially for machine tools
US2381921A (en) * 1943-07-26 1945-08-14 U S Automatic Corp Milling and marking machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664788A (en) * 1945-11-16 1954-01-05 Goss Printing Press Co Ltd Stereotype finishing machine
US2613578A (en) * 1951-05-29 1952-10-14 Wood Newspaper Mach Corp Machine for milling pockets in curved stereotype plates
US2743501A (en) * 1953-01-22 1956-05-01 Wood Newspaper Mach Corp Saw chip collector
US2736947A (en) * 1953-01-23 1956-03-06 Time Inc Plate grooving machine
US3257706A (en) * 1962-06-05 1966-06-28 Renault Machine Tools U K Ltd Automatic in-line transfer machine
US3192833A (en) * 1963-06-06 1965-07-06 Edward W Carroll Milling machine for cutting air vents in glass molds
US3478377A (en) * 1967-06-08 1969-11-18 Anvil Products Inc Threading machine

Also Published As

Publication number Publication date
FR942187A (fr) 1949-02-01
CH266383A (fr) 1950-01-31

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