Патент USA US3091184код для вставки
May 2s, 1963 3,091,174 E. G. HARVEY PRINTING MACì-IÍNE Filed DSO. 23, 1960 4 Sheets-Sheet l \\\___ _ __ __ ___ _M_ _\lvíïv May 28, 1963 B. G. HARVEY 3,091,174 PRïNTING MACHINE Filed Dec. 25, 1960 4 Sheets-Sheet 2 May 2s, 1963 B. G. HARVEY 3,091,174 PRINTING MACHINE Filed Deo. 23, 1960 4 Sheets-Sheet 3 N May 28, 1963 B. G. HARVEY 3,091,174 PRINTING MACHINE Filed Dec. 25, 1960 Q) œ F | 4 sheets-sheet 4 BßQlÄ'Z-âl a ig@ l 3,091,174 Patented May 28, 1963 2 of rapidly marking small irregularly shaped articles in a precise and sharply defined manner. PRINTING MACEME Bertrand G. Harvey, Keene, NH., assigner to Marken! Other objects an advantages of the invention will be seen as the following description 'of a preferred embodi Machine Company, Keene, NH., a corporation of New ment thereof progresses in conjunction with the drawings, in which: FIG. l is a plan view of the printing apparatus accord ing tc a preferred embodiment of the invention; Hampshire Filed Dec. 23, 1960, Ser. No. 78,122 11 Claims. (Cl. lill-41) This invention relates to printing apparatus and more particularly to apparatus for placing indicia on small FIG. 2 is a side elevational view of fthe printing ap paratus of FIG. l; FIG. 3 is a Side elevational view of the printing ap paratus of FIG. l, similar to FIG. 2, showing certain of In the printing of small articles, such as electrical com the elements in a second position; ponents (resistors and capacitors, for example) and simi FIG. 4 is a sectional view along the line 4~-4 of FIG. 2 lar items, it is imperative that the marking placed on the showing the inking plate, a portion of the drive mecha 15 article during the printing operation be sharply delineated nism, and certain other elements of the apparatus; so that it properly serves the intended function. These FIG. 5 is a sectional view along the line S-S of FIG. 2 articles are frequently irregular in shape and often have showing the main drive linkage of the apparatus of FIG. l; wire leads or similar parts `associated therewith which FIG. 6 is a view of the printer actuating mechanism makes the continuous end-to-end feeding thereof difiicult if not impossible. Additionally, due to the irregular sur 20 of the app-aratus, this view being of the opposite side of the machine from that of the views in FIGS. 2 and 3; face of such articles, direct printing from type often results articles in a rapid, eiiicient and accurate manner. and FIGS. 7-10 are diagrammatic views of the mechanism Accordingly an object of this invention is to provide associated with the printing apparatus for transferring an improved apparatus for placing indicia on irregularly 25 ink from the type to the offset head. shaped articles such as electrical components. With reference to FIGS. l and 2 the printing apparatus Another object of this invention is to provide an im in an incomplete or distorted marking. proved printing apparatus capable of accurately printing electrical components such as resistors and capacitors, capsules and similar small articles in a rapid and eñicient manner. there shown has a base lll which is adapted to be sup ported by leveling screws 12, 14, 16 on a suitable surface. Mounted yon the base is a bracket 18 which supports a 30 drive sha-ft 2@ to which is attached an eccentric crank 22. This crank 22 is secured to a pitman arm 24 by means of In the apparatus of the invention the article to be im a bolt 26. The pitman arm 24 is attached tot a cross head printed is positioned by suitable means beneath a printing >2S which is securely fastened to the square shaft 39. This lhead element in a stationary location during the printing square shaft is supported for reciprocating movement in operation and the printing head carrying ink or other members 32, 34. printing medium disposed in the desired form contacts 35 guide Mounted on the forward end of the square shaft is the the article to transfer the printing medium to the article type head or printing die 36 which carries the printing surface in the printing operation. It is essential that there type. An inking plate 38 is mounted above the printing be no lateral motion of the printing head relative to the article during the printing operation and, similarly, no die 36. An extension 40 secured to the rear end of the »lateral motion to the printing head relative to the printing 40 shaft extends laterally and has a link member 4Z, pivotally die which carries the indicia and to which the printing medium is being applied so that a sharp impression that is secured thereto by pin `44, which supports the round shaft 46. This round shaft has at its forward end a cou pling y4S which is secured to the inking mechanism ac tuating link Sil by means of a bolt 52, also shown in FIG. not smeared, blurred or otherwise detiective is transferred to the article. Accordingly, another object of the invention is to pro 45 5. The link '56 is pívotally mounted on the upstanding flange 54 which is secured to the base 'lll and is formed vide a compact, rapid and eiiicient printing apparatus for in dog-leg shape. At the knee of the link Sti is a pivot pin the placing of indicia on small articles in which the print 56 t-o which is secured a pair of arms 58 which `supports ing head is operated in a manner to avoid possibility o-f an inking roll 66. These arms and the roller are biased lateral motion during printing medium transfer operations. In accordance with the invention there is provided ap- " downwardly by the springs 62. At the outer end of the link 59 is another pivot pin 64 which is adapted to slide paratus including an offset printing head or other suitable :in slot 66 of the ink reservoir ratchet drive member 68. transfer element which carries a printing medium from a A screw 7i) and nut 72 are provided to adjust the amount printing die or other suitable indicia carrying element to of travel of pin 64 in slot 66. _the article to be imprinted and places the printing medium A transfer roll 74 is :supported in a pair of arms 76 on that article in a printing operation. The apparatus is 55 which pivotally attach to the upstanding support mem arranged to provide an initial, straightline relative move bers ‘78 by means of the bolt and nut assembly S0. A11 ment between the offset head and printing die; and the ink reservoir 82 is also mounted on the support members offset head, after it is separated from the printing die, is 78 and has a cooperating reservoir roll 84 which is driven rotated into the proper and stationary position for the printing operation. The printing operation is then per 60 by the notched arm 86 and a toothed ratchet member 88 Kfor transfer of ink from the reservoir via roll 84 to the formed, again with a substantially straight line movement, roll 74. A spring 96, connected between a pin 92 on so that‘through the two printing medium transfer opera one of the support members 78 and pin 94 on link 68, acts tions a sharply defined indicia is placed on the article. to pull the linkage of arms 76, 63 and S6 yforward as far In the preferred embodiment of the invention the printing apparatus includes a single drive unit which controls (l) 65 as possible as limited by the position of link 50 and the pin 64 that it carries relative to the slot 66 and the ad the coordinated operations of transferring ink from a justing ybolt 70 therein. The several rolls, ink reservoir reservoir to a printing die via an inking plate so that a and inking plate are also shown in FIG. 4. smooth layer of ink of uniform thickness is placed on the Forwardly of the ink reservoir support members 78 die, and (2) the motion of the offset head between the and immediately in front of and below the surface 96 of 70 printing die and the article to be imprinted. The ap the ink tran-sfer plate 38 are positioned a pair of quadrant the invention is a compact mechanism, simply ' paratus of surfaces 98 which act as guides for the support arms '58 designed with a common drive element, that is capable 3 of roll 60. 3,091,174 Clamping means 100, associated with the printing die, permits easy removal and changing of the type as desired. Also secured to coupling means 48 at.the forward end of shaft 46 is a friction drive block 102 which has a base portion `104 anda cap portion 106. The cap portion is secured to the base portion by means of screws 108, 110, each of which has a spring 112 positioned between the 4 the ydrive block 102 it is permitted to slide through that block so that it `does not impede additional desired opera tion of the printing apparatus. ‘ The apparatus is in the position shown in FIG. 6 at this time with the square bar 30 and the structure mounted thereon being moved rearwardly. A portion of this structure is the cross head 28 and the arm 146 on which is mounted the pivoted cam follower finger 144. This head of the screw and the cap 106. A rod 114 is adapted finger is forward of the roller 142 in its foremost posl to be received between the base 104 and cap,1(}6 and to 10 tion and as it moves rearwardly it contacts the roller be driven thereby. (A view of the structure also appears 142 and as it is fixed in posi-tion against the stop 150 in FIG. 4.) Mountedon the rod are two stop members it forces the roller 142 up pivoting the printing yoke 116, y1‘18 -adjustably secured thereto by means of set about the pivot points 134, 136 and causing the offset screws 120. This drive rod 114 has its forward end bent head to lower to transfer the ink carried on its face _to outwardly at a right angle and is connected to link 122 15 the article 160 in a printing operation. As soon as the which is secured to a shaft 124 on which the offset print finger 144 passes the roller 142 the spring 140 acts to ing head 126 is mounted. This shaft and offset head as pivot the yoke upwardly and lifts the offset head in a com sembly are supported by a yoke 128 through which the pletion of theprinting operation.. The cam follower is Yshaft 124 passes and is secured in the yoke by means of Ypositioned such that the offset head has rotated to its a suitable cap 130. A biasing spring 132 is .provided to 20 vertical position and becomes stationary before the fol assist proper positioning of the offset head '126. A lug lower contacts roller 142. In other words, on the com‘ 148 positioned on the yoke cooperates with stop »mem Vmencement of the rearward movement of the crosshead bers 116, 118. . 28 (but after the short lost motion delay) the oñî'set head The offset head yoke 128 is'pivotally mounted on the is rapidly rotated downward to the vertical position and printing unit support members 78 by bolts 134, 136. A 25 subsequently, after it had Ibeen properly positioned (asV yoke arm -138 extends rearwardly of the pivot point and determined by the location of stop 116), the finger 144 is biased ydownwardly ‘by a spring 140 that is secured be contacts roller 142 to perform the printing operation. In tween the end of that arm and the base 10, as best seen this manner the offset head is not being rotated at that time in FIG. 6. Also positioned adjacent the rear end of the and a perfect printed impression results. . yoke arm. 138 is a roller '142. This roller 142 cooperates 30 with a cam follower in the form of a pivoted finger 144 which is mounted on an arm 146 that is secured to and extends forwardly from the cross head 28. This cam At the same time the link 50 is being pivoted in a coun terclockwise direction by the rotation of the crank 22. This pivoting movement starts the inking roll 60 down wardly across the inking plate as the plate is being brought follower finger 144 is normally biased against stop 150 rearwardly by the main drive rod 30. The roll 60 is by a spring 152 which is connected between the finger 144 35 maintained in contact with the plate as mentioned above fand the arm 146. by the biasing springs 6-2. As the link 50 continues to It is 4believed that the functioning of this machine may Yrotate in a counterclockwise direction the links 68, 76, 86 be .best understood by a step by step description of the move forward under the influence of spring 90 withlinks operation thereof. In FIG. 2 apparatus is shown with 76 and 86 pivoting about the fixed point 80. This forces 40 Ythe offset head 126 disposed in horizontal position against the link 86 forwardly in a cocking operation preparatory the type 1'54 mounted in the printing die 36 (as indicated to its engagement Ewith the tooth wheel 86 to drive the in FIG. 7). The transfer roll 74 is in contact with the reservoir roll 84. At ‘the same time the link 76 carrying reservoir roll 84 and the inking roll l60 is at the upper end roll 74 is pivoted downwardly toward the surface of plate of the .surface 96 of plate 38. As the crank 22 lrotates 96. As mentioned above during this interval of 180° 45 `in a clockwise direction as shown in FIG. 2 the pitman rotation of crank i22 the plate and type head move to arm starts to move rearwardly, drawing the crosshead 28 their Irearmost positions. As the plate 38 moves rear and shaft 30 with it. This causes the printing die 36 and wardly it is rotated by contact of its notched disc 162 type 154 to move away vfrom the offset head 126, from the with the arm 164 that is mounted on the upstanding ñange position shown in FIG. 7 to the position shown in FIG. 8. 54. ’I'he position of these elements after the eccentric Sectional views of the connection between a portion of 504 22 has rotated 180° is shown in FIG. I3. It Will be noted the offset head rotating linkage .including round shaft 46, that the transfer roll 74 is in contact 'with the forward link 42 and pin «44, illustrating the two positions thereof, end of the plate surface 96 and therinking roll 60 has are shown in FIGS. 9 and 10. As will be seen from those been driven down across the .plate surface 96 and along the quadrant guides 98 across the type face in an opera :figures there is an elongated slot I156 in the link member 42 in which the pin 44 slides. This arrangement provides 55 tion which transfers ink from the plate surface 96 to the face of the type 154. The advancing lever 86 is in con a lost motion connection so that no force is imparted to tact with a notch on the reservoir roll 88l preparatory forY the offset hea-d rotating mechanism until the type 154 has an advancing action for feeding ink from the reservoir. been withdrawn fromA the resilient printing surface 158 The pin 64 has moved through the slot 66 after roll 74 carried by the offset head 126. In this way there is no contacted the plate 32. The notched plate ring has en smearing or blurring of the ink that has been deposited gaged the arm 164 and rotated the plate through a few on the surface 158 by the type 154 as those two members degrees. Finally, the shaft 114 is slid lthrough the'fric tion block assembly 102 a distance as determined by the 156 the rod 114 is pulled rearwardly by shaft 46 through the friction clamp connection 102. The link 122 rotates 65 movement of the link 50 and the position Yof stops 116, 118. the offset head through shaft 126 from the horizontal At this time the offset head 126 is in perpendicular posi position (with the stop 1|18 against the lug 148 (FIG. 2)) tion over the article 160. to the vertical position (Where the stop 116 contacts lug As the crank 22 continues to rotate the crosshead 28 Y 148 >(FIG. 3)). In the latter position the offset head has move apart. As soon as pin 44 contacts the end of slot been rotated 90° to a position exactly above the article 70 starts to move forward again and the offset head 126 (after the lost motion delay introduced -by the movement j160 to be- imprinted. (It will be understood of course of pin 44 in the -slot 156) is immediately rotated by shaft that the article may bermoved into proper .position by 114 90° in a counterclockwise direction to a horizontal any suitable means, for example, by a conveyor belt). position preparatory to contact with the printing die 36. The rod 114 is prevented from moving further after stop At the same time »the crosshead 28 and shaft 30 move 116 contacts lug 148 but due to the friction connection of 75 forward, carrying the printing die 36 and the plate 38». 3,091,174 5 As the cross head 2S moves forward the follower 14A»l (shown in FIG. 6) on the offset head actuating mecha nism slides past the roll 142 without moving the offset head yoke as the follower is permitted to pivot by spring 152. The springs 140 and 152 are proportioned so as t0 6 Y 4. -The‘apparatus as claimed in >claim l wherein said offset head is supported on a yoke mounted for pivoting movement, and said yoke includes an arm portion carry ing a cam surface and said third means includes a cam follower adapted to engage said cam surface for pivoting said yoke to transfer printing medium from said offset prevent any downward movement of the yoke 128 at head to the article to be printed. this time. ‘5. Apparatus for printing indicia on small irregularly As this structure is moving forward the link 50 is being shaped articles comprising an ink reservoir, a printing die pivoted in a clockwise direction to withdraw the inking roll along the quadrant guides 98 and across the plate 10 having an indicia conñguration thereon, reciprocable drive means to move said printing die during the transfer of ink surface so that it finally is positioned at the upper end from said reservoir to said die, an offset head adapted to of the plate surface 96 in the position shown in FIG. 2. receive an ink impression from said printing die when said The clockwise rotation of link 50' also moves the pin 64 offset head is in a first position, means connected to said through the elongated slot 66 but otherwise does not effect the position of link 68 or its attached members 76, 87, 15 reciprocable drive means to rotate said offset head 90° to a second position in alignment with the surface of the due to the forward biasing eñect of spring 90, until the article to be imprinted, and means to move said offset end of the slot, as controlled by the position of bolt 70, head toward the article to transfer an ink configuration is reached. When the pin 64 contacts the end of bolt to the article in a printing operation, said reciprocable 70, the attached links are moved against the force of spring 90 to pivot the transfer roll 74 upwardly about 20 drive means being means arranged to withdraw said print ing die from contact with said offset head prior to opera the pivot point 80 and to pull the latch member 86 rear tion of said offset head rotating means. wardly, advancing the roll 84 to make a desired quantity 6. The apparatus as claimed in claim 5 and further of ink available from the ink reservoir 82 for transfer via including a common mechanical drive source for Idriving roll 74 to the plate surface in the neXt operation. Thus it will be seen that the invention provides a com 25 said offset head rotating means and said die reciprocating means and wherein said rotating means includes a lost pact and eñicient apparatus which includes coordinated motion connection, comprising a link having an elongated means driven by a single mechanical element for trans ferring a printing medium from a reservoir via an ink ing plate to a printing die and an offset head mounted for slot therein and a pin driven by said common mechanical drive source disposed in said slot such that rotation of rotation which picks up printing medium from the print 30 the offset head is delayed until the printing die is out of contact with the offset head. ing die in sharply delineated form, rotates through 90° 7. The apparatus as claimed in claim 5 and further and then is actuated to place the printing medium on the including a yoke apparatus for pivotally supporting said articles, irregularly shaped or otherwise, to be imprinted offset head, a cam surface on said yoke and wherein said in a printing operation. While a preferred embodiment of the invention has been shown and described, changes 35 common drive means includes a main crosshead and a ca-m follower finger adapted to cooperate with said cam therein will be obvious to those skilled in the art and there surface for pivoting said yoke to carry said offset head fore it will be understood that the invention is not in toward said article in a printing operation, said finger tended to be limited thereto or to details thereof and being positioned to contact said cam surface and pivot departures may be made therefrom within the spirit and 40 said yoke when said offset head rotating means is sta scope of the invention as defined in the claims. tionary with said head in said second position in align I claim: ment with the article to be printed immediately prepara l. Apparatus for printing indicia on small, irregularly shaped articles comprising a printing medium reservoir, a printing die having an indicia configuration, an offset tory to the printing operation. 8. Apparatus for printing indicia on small articles com printing head mounted adjacent said printing die, means 45 prising an ink reservoir, an indicia carrying head, a trans fer head, means to transfer ink from said reservoir to said to transfer printing «medium from said reservoir to said indicia carrying head, and drive means including first printing die in a smooth layer, and drive means including means to rotate said transfer head between a first .posi first means to rotate said offset head between a ñrst posi tion adjacent said indicia carrying head and a second posi tion in alignment with said printing die and a second po sition in alignment with the article to be imprinted, sec 50 tion adjacent the article to be printed, second means to move said transfer head and said indicia carrying head ond means operative when said offset head is in said ñrst relative to one another to transfer a configuration of ink position to move said printing die in straight line motion from said indicia carrying head to said transfer head when toward said offset head to transfer printing medium from said transfer head is in said ñrst position, and third means said printing die to said offset head and third means to move said offset head towards the article when said offset 55 to move said transfer head to contact the article in a printing action when said transfer head is in said second head is in said second position for application of the print position, said first, second and third means being mechani ing medium carried by said offset head to the article to cally operated by a single drive unit, said first means in cluding an arm on said transfer head, a drive rod con 2. The apparatus as claimed in claim 1 wherein said first means includes a drive rod having a pair of adjust 60 nected to said arm, a pair of adjustable stops mounted ou said drive rod to control the movement of said drive rod, able stops mounted thereon and a friction block coupling and a friction block clamping means associated with said means associated with said drive rod arranged to be recip drive rod arranged to be reciprocated by said drive unit, rocated by said drive means biased so that said drive rod said clamping means being biased so that said drive rod is permitted to slide relative to said friction block cou pling means when said stop members inhibit motion »of 65 is permitted to slide relative to said friction block when said stop members inhibit motion of said drive rod, so said drive rod. that said second and third means may be operated by 3. The apparatus as claimed in claim 2, wherein said said- drive means at times when said first means is inop drive rod includes a lost motion connection and is ar be printed. erative. ranged so that after said offset head is positioned in align 9. Apparatus for printing indicia on small articles com ment with said printing die by said first means, said print 70 prising a type head adapted to be reciprocated, a rotat ing die is moved forward to Contact said offset head in a able transfer head pivotally mounted on a yoke, said printing medium transfer operation and then is moved transfer head having a surface adapted to be positioned away from said oifset head by said second means prior to actuation of said first means to rotate said offset head to said second position. to receive an ink impression from said type head in a 75 ñrst position and to be rotated 90° to a second position 3,091,174 Y 7 8 Y with said surface adjacent the article to =be imprinted, ink Ifrom said reservoir to said type head, means to ro tate> said transfer head 90° between a first position in common drive means for reciprocating said type head and rotating. said transfer head, said common drive means which said resilient surface is in valignment withss'aidtype including means for .pivoting said yoke in a printing head and -a second position in which said resilient> sur operation when said transfer head is in said second posi 5 face is directly above the article to be printed, Vmeans to tion, means to .render said transfer head rotating means reciprocate said type head toward and away from the inoperative when said pivoting means is operative, and first position of said transfer head to transfer an ink means to hold said transfer head immobile against rota configuration from said typeA head to the resilient surface tion as said type head is being reciprocated into and out of said transfer head when said transfer head is in said of immediate contact with said transfer head. 10 first position, means to pivot said yoke to move said 10. Apparatus for printing indicia Von small articles transfer head toward an a-rticle to tbe imprinted so that comprising a type head adapted to -be reciprocated, a said resilient surface contacts the article when said trans rotatably mounted transfer head having a surface adapted for head is in said second position, common drive means-„x to -be positioned to -receive an ink impression from said for operating said rotating means, said reciprfîcating> type head in a first position and to :be rotated 90° to a 15 means and said pivoting means, including a .main recipro second position with said surface adjacent the article to be imprinted, common drive means for reciprocating said type head and rotating said transfer head, said com mon drive means including >an arm connected to said transfer head, an operating rod mechanismconnected to said arm eccentrically of the axis of rotation of said transfer head and means to hold said transfer head im cating element and friction drive means for operating said transfer head rotating means adapted to enable the ím rnobilization of said transfer head When said transfer head is in its first position and when said transfer head is in its second position while not inhibiting continued ‘operation’ either of said reciprocating means or said pivoting means, said friction drive means including ad mobile against rotation as said type head is being recipro justable stop means for controlling the position of said cated into and out of contact with said transfer head in transfer‘head, and a lostV motion connection operative cluding a lost motion link in said operating rod'mecha 25 when said transfer head is in said first position for pre nism, said lost motion link including an elongated slot, venting movement of said transfer head immediately be~ a driving member carried in said slot and driven by said fore and after transfer of an ink configuration to said Y common -drive means, said rotation immobilizing means transfer head from said type head. being arranged so that the transfer head rotating means is effectively disconnected from the common drive means References Cited in the file of this patent when said'type head is in a position immediately adja v cent said transfer head. 1-1. Apparatus for printing indicia on small articles comprising an ink reservoir, -a type head, a transfer head having a resilient surface adapted to receive a conñgura 35 tion of ink from said type Ihead and transfer that ink configuration to an article ina printing operation, said transfer head being mounted Ion a yoke, means to transfer v UNITED STATES PATENTS 1,639,789 Y Walters _____________ _- Aug. 23, 1927 1,696,280. 2,049,257 O’Hara ____________ __ Dec. 25,v 1928 Gould et al. ________ __ July 28, 1936 551,429 Germany ___________ __ May 31,' 19-32 FOREIGN PATENTS l '