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US3424082A - High speed transfer printer - Google Patents

High speed transfer printer Download PDF

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Publication number
US3424082A
US3424082A US563151A US3424082DA US3424082A US 3424082 A US3424082 A US 3424082A US 563151 A US563151 A US 563151A US 3424082D A US3424082D A US 3424082DA US 3424082 A US3424082 A US 3424082A
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US
United States
Prior art keywords
component
components
transfer
drum
path
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
US563151A
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English (en)
Inventor
Lee Gray Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments Inc
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Texas Instruments Inc
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Filing date
Publication date
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/08—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces
    • B41F17/14—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length
    • B41F17/20—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors
    • B41F17/22—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing on filamentary or elongated articles, or on articles with cylindrical surfaces on articles of finite length on articles of uniform cross-section, e.g. pencils, rulers, resistors by rolling contact

Definitions

  • a transfer printing device for imprinting information on the body of electrical components which are caused to move along a path generally tangential to a rotating transfer path in a particular timed sequence. Each component is arranged to traverse a very short portion of a path which is outwardly displaced from the remainder of its path such that each component is sequentially positioned in the path of the transfer pad to permit information to be imprinted on the body of the component.
  • the body begins to spin sothat the ink characters are transferred to the body without smearing the ink.
  • This type of printer performs the printing function well, but is too slow. Further, this type of printer cannot be operated at higher rates because the conveyor system must be indexed, the component raised, the characters printed, and the component lowered before the next component can be indexed into position at the printing station and the procedure repeated. As a result, the maximum rate at which these machines can be operated is about three or four thousand components per hour.
  • a principal object of this invention is to provide a machine for printing characters on an axial lead component at much higher rates, such as for example, a rate of 24,000 components per hour.
  • Still another object is to provide such a printing device which has no indexing mechanism and therefore is relatively inexpensive to build.
  • the axial lead components are continuously moving along a path generally tangential to a rotating transfer pad in timed sequence such that as each component traverses a very short path adacent the path of the transfer pad, the transfer pad engages and rotates the components and prints the desired characters on the com- 3,424,082 Patented Jan. 28, 1969 ice ponents. More specifically, the short path adjacent the path of the transfer pad is raised above the remainder of the path followed by the components so that only one component will be raised into the path of the transfer pad at any one time.
  • the leads of the component are supported on and slide along. a pair of parallel rails spaced apart to receive the cylindrical body between the rails.
  • the axial lead components are moved along the rails by a drum which rotates in synchronism with the transfer Wheel and has radially extending slots which receive the lead wires of the components.
  • the components are transferred onto the rotating drum from a carrier moving horizontally below the transfer wheel in synchronism with the drum and the components returned to the carrier after the characters are printed.
  • the components are sequentially loaded on the periphery of a continuously rotating drum as the drum continues to rotate, the components are sequentially moved radially outwardly, one at a time, over a predetermined arc of the drum and during this period the component is engaged by the rotating transfer surface to transfer the ink symbol to the component.
  • FIGURE 2 is a simplified perspective view, somewhat schematic, of a printer constructed in accordance with the present invention.
  • FIGURE 3 is a detailed side elevation of a printer constructed in accordance with the present invention with portions of the structure broken away to better reveal details of construction;
  • FIGURE 4 is a sectional view taken substantially on lines 4-4 of FIGURE 3;
  • FIGURE 5 is a plan view of the printer illustrated in FIGURE 3.
  • FIGURE 6 is a perspective view of a typical carrier used in the processing. of axial lead components.
  • an axial lead component is indicated generally by the reference numeral 10 and is comprised of a cylindrical body 12 and a pair of axially extending lead wires 14 and 16.
  • the cylindrical body 12 typically encapsulates a resistor, capacitor, diode or other electronic component requiring only two leads and may vary in diameter over a considerable range.
  • the specific purpose of the machine presently to be described in detail as an exemplary embodiment of the invention is to print reference characters or symbols on the surface of the cylindrical body 12 somewhat as illustrated in FIGURE 1 so that the component can be properly identified and classified.
  • a transfer printing machine constructed in accordance with the present invention is indicated generally by the reference numeral 20.
  • the printing machine 20 is comprised of a rotating drum, indicated generally by the reference numeral 22, having a plurality of radially extending slots each of which is adapted to receive a component 10.
  • the components 10 are sequentially loaded into the slots of the drum 22 as the drum 22 continues to rotate.
  • the component engages a pedestal 24 and is raised upwardly, and therefore radially outwardly in the slots, by an inclined plane on the pedestal, and then moves across a generally horizontal tip of the pedestal.
  • the surface of the horizontal tip is of such a length in relation to the spacing between the slots that only one component at a time is raised, i.e., moved radially outwardly in its slot.
  • one of the resilient transfer pads 2611 or 26b carried by the rotating transfer Wheel 28 engages the body 12 of the component, causing the component to roll on the surface of the transfer pad so that the ink characters carried by the transfer pad will be transferred to the body of the component.
  • the ink characters are initially formed on the transfer pads 26a and 26b by a mechanism comprised of a conventional type wheel 32 which rotates counter to the transfer wheel 28 and in precise synchronism with the transfer wheel so that ink characters will be printed on the transfer pads without smearing.
  • Ink is applied to the type 30a and 30b by a conventional ink supply wheel 34 which rotates counter to the type wheel 32 with precisely the same rim speed as that of the type in the holders 30a and 30b.
  • the means for forming the ink characters on the transfer pads 26a and 26b is conventional.
  • the present invention is concerned with the mechanism for presenting the components to rotating transfer pads 26a and 26b, which mechanism will now be described in detail.
  • a support for the drum 22 is comprised of a base plate 40 and upright side plates 42 and 44.
  • a vertically movable carriage is comprised of a bottom plate 46 and vertical side plates 48 and 50 which slide in dovetail grooves 52 and 54 formed in the side plates 42 and 44, as can best be seen in the plan view of FIGURE 5.
  • libs 56 and 58 are provided to prevent lateral play of the side plates 48 and 50 within the dovetail grooves.
  • the carriage may be raised and lowered by rotating a hand wheel 60 on a shaft 62 which is threaded through the bottom plate 40 and rotatably connected to the bottom plate 46, as can best be seen in FIGURE 3.
  • a shaft 66 is journaled by ball bearings 68 and 70 in the upright plates 48 and 50 of the movable carriage.
  • the drum 22 is comprised of a pair of discs 72 and 74 which are splined on the shaft 66 by keys 76 and 78, respectively, which are secured in place by set screws 80 and 82, respectively.
  • a pedestal support plate 84 is mounted on the bottom plate 46 and extends upwardly between the disks 72 and 74.
  • a loose fitting sleeve bearing 86 is positioned in the plate 84 and around the shaft 66.
  • the upper end of the pedestal support 84 is bifurcated to form arms 88 and 90 which support a trunnion pin 92.
  • a pedestal 24 is pivotally mounted on the pin 92.
  • the upper end of the pedestal 24 is also bifurcated to form arms 24a and 24b which are so spaced as to engage the axial leads 14 and 16 on either side of the body 12 of a component 10.
  • a spring 96 is connected to a pin 98 in the lower end of the pedestal 24 and is secured to a pin 100 on the pedestal support plate 84.
  • the purpose of the spring 96 is to bias the pedestal 24 into the vertically upright position illustrated in FIGURE 3.
  • the pedestal 24 is stopped in the upright position by a suitable stop 101 extending between the arms 88 and 90 mounted on the support plate 84, but not illustrated.
  • the upper end of each of the arms 24a and 24b of the pedestal forms a support or guide rail having an inclined portion 102 and a horizontally extending flat portion 104. It will be noted that the flat portion 104 is located vertically above the axis of the shaft 66.
  • Each of the disks 72 and 74 of the drum 22 has a plurality of teeth 106 which form a plurality of radially extending slots 108.
  • the slots 108 are just Wide enough to receive the leads .14 and 16 of the devices '10, and the teeth 106 are of sufficient length to retain the leads in the slots as the leads pass up the inclined plane 102 and over the flat surface 104 of the pedestal 24.
  • Thet interior configuration of the teeth 106 is such as to project over the ends of the arms 24a and 24b of the pedestal 24 into close proximity of the body 12 of the device, as can best be seen in FIGURE 4, to reduce bending moments on the leads during the printing process.
  • the surface of the resilient transfer pad 26a on the wheel 28 has a width which will pass between the teeth 106 of the two disks 72 and 74.
  • the tray 110 is comprised of a pair of longitudinally extending channels 112 and 114 having a cross-sectional configuration as illustrated in FIGURE 4.
  • the channels 112 and 114 are interconnected at the ends thereof by transverse bars 116.
  • the channels 112 and .114 have inner flanges 112a and 114a in which are formed a plurality of slots 112b and 11412 for receiving the leads 14 and 16 of the components.
  • the trays 110 are propelled along slide rails 118 and 120 by a chain conveyor system (not illustrated) which is precisely synchronized with the rotation of drum 22.
  • a chain conveyor system (not illustrated) which is precisely synchronized with the rotation of drum 22.
  • the flange portions 112a and 114a pass on opposite sides of the disks 72 and 74 of the drum 22.
  • a pair of inclined rails 122 and 124 extend from below the level of the components when they are resting in the bottom of the slots 112l2-114b and converge at a higher level between the teeth of the two disks 72 and 74, as best seen in FIGURE 5, to both center the bodies 12 of the components, and also raise the components so that they will drop into the slots 108 of the drum 22.
  • a leaf spring 1126 which is mounted on a post 128, is provided to insufe that the devices fall into the slots 108.
  • the bars 116 across the ends of the trays 110 are positioned well below the upper ends of the teeth 106 and also below the upper end of the pedestal 24.
  • a substantial notch is therefore provided in the periphery of each of the disks 72 and 74 of the drum 22, and movement of the carrier trays is synchronized with movement of the drum so that both the trailing bar 116 of the leading tray 110 and the leading bar 116 of the trailing tray 110 will be received in the slot 130 as the drum 22 rotates and the carrier trays pass the printing station.
  • the pedestal pivots around pin 92 against the bias of spring 96 to permit the bar to pass, then is returned to the upright position by the spring.
  • the desired type is set in the print heads 30a and 30b and ink is provided on the ink supply wheel 34.
  • the position of the upper end 104 of the pedestal 24 is then adjusted by means of the hand wheel 60 so that the body of an axial lead component whose leads are resting on the surfaces 104 of the pedestal 24 will be positioned so as to be engaged by the surfaces of the transfer pads 26a and 26b.
  • the carrier trays 110 are then loaded on the slide rails 120 and when engaged by lugs on a conveyor chain, are moved along the slide rails 120. Movement of the carrier trays 110 is precisely timed with rotation of the drum 22 so that the leading bar 116 will enter the slot 130.
  • the inclined rails 122 and 124 engage the leads of the component and begin to raise the leads upwardly within the slots 11212 and 114b of the tray 110.
  • the leads drop downwardly into the radial slots 108 of the drum 22.
  • Spring 126 insures that the leads of the components drop into slots 108.
  • the leads of the component on the drum successively engage the inclined surfaces 102 at the upper end of the pedestal 24 so that the components are successively raised, one at a time, to the horizontal surface 104.
  • Rotation of the transfer wheel 28 is synchronized with rotation of the drum 22 so that at approximately the instant a component reaches the leading edge of the horizontal portion 104 of the pedestal rail, that is the position illustrated in FIGURE 3, the leading edge of transfer pad 26a engages the cylindrical body of the component causing it to rotate within the slot of the drum 22 as it continues to move across the surface 104.
  • the component body is soon rotated at a speed such that there is no slippage between the body of the component and the transfer pad.
  • the ink image imprinted on the transfer pad from the type wheel 32 is located on the transfer pad 26a at a point trailing the leading edge of the transfer pad by a distance sufficient to insure that the transfer pad is not slipping over the surface of the component as the ink engages the component.
  • the transfer pad 26a has passed to the extent necessary to print the desired characters on the surface of the component, and the component then falls back into the bottom of its respective slot 108 on the drum 22.
  • Transfer pad 26a After the transfer pad 26a has passed, the next suceeding component reaches the leading edge of the hori* zontal portion 104 of the pedestal. Transfer pad 26b then engages the component starting it rolling and transferring the characters to the body of the component as the component continues to travel across the surface 104 of the pedestal. It is important to note that only one component at a time traverses the surface 104, so that only one component is raised to a sufficient height to be contacted by the transfer pad 26a or 26b. As the drum 22 continues to rotate, the components again enter the slots 112b-114b of the carrier tray 110 and leaves the slots of the drum 22.
  • the trailing bar 116 again enters the slot 130 in the drum 22 and pivots the pedestal 24 downwardly against the force of spring 96 as it passes the print station.
  • the leading bar 116 of the next successive carrier tray 110 is also received in the slot 130 at the same time, and the cycle repeated.
  • the apparatus utilizes no indexing mechanism, but instead utilizes only continuously moving, and primarily only rotating, components.
  • the device can be operated at a much higher printing rate.
  • the drum 22 permits the use of narrow slots 108 to attain better positional control of the components and provides a means for gripping the leads close to the body 12 to prevent bending of the leads when the transfer pad strikes the body.
  • the components may merely be moved at a constant rate of speed horizontally by a suitable carrier and sequentially raised vertically by an inclined plane to a surface extending generally tangentially to the path of the transfer pad where the components can be engaged one at a time by the transfer pads.
  • a rotating transfer wheel having a transfer surface which travels through a predetermined arcuate printing path as the wheel rotates
  • guide means for guiding a series of axial lead components along a path including a short portion displaced outwardly from said path and extending generally tangentially to the predetermined arcuate printing path such that the outwardly displaced short portion of the path of the surface of the cylindrical bodies substantially coincides with the predetermined arcuate printing path of the transfer surface, and
  • the guide means comprises a pair of rails spaced to engage and support the axial leads while receiving the cylindrical body between the rails.
  • the guide means comprises rail means disposed adjacent the bottom of the arc of the transfer pad having an upper surface on which the components are supported and over which the components are moved, the upper surface having a relatively short portion raised above the adjacent portions that is positioned adjacent the arcuate path such that a component traversing the short portion of the surface will be engaged by the rotating transfer pad, the short portion being sufficiently short that only one component will be traversing the short portion at any one time, and of sufficient length that the component will remain on the short portion for a period of time sufficient for the transfer pad to transfer the printing to the component.
  • the guide means is adapted to support the components in the vertical direction and the means for continuously moving the components along the path comprises drum means rotated in synchronism with the transfer wheel and having a plurality of circumferentially spaced, radially extending slots for receiving the components, the drum means being positioned relative to the guide means and the radial slots being of such an extent that the components will move radially outwardly in the slots as they are moved across the guide means by rotation of the drum means.
  • a rotating transfer wheel having a transfer surface which travels through an arcuate path
  • a rotating drum means having a plurality of peripherally spaced means each adapted to receive an axial lead component
  • the drum means including means for sequentially moving the components radially outwardly from the drum means as each component passes through a selected small angle of rotation of the drum, the rota-ting drum means being positioned relative to the transfer wheel such that as each component is successively moved outwardly, its path intersects the path of the transfer surface, and the rotating drum means being synchronized with the rotating transfer wheel such that the transfer surface will engage each component while it is intersecting the path of the transfer wheel.
  • the transfer wheel rotates on a generally horizontal axis and the rotating drum means comprises a pair of disks rotating on an axis disposed parallel to and below the axis of the transfer wheel, the disks having peripherally spaced, radially extending grooves for receiving the oppositely extending leads of axial lead components and being spaced to receive the bodies of the components therebetween, and a camming means disposed adjacent the top of the disks and positioned and adapted to sequentially engage the components as the drum rotates the components past the camming means and move the components radially outwardly and upwardly within the respective slots such that the component passing over the camming surface will be contacted by the transfer surface.
  • camming means comprises a pair of spaced camming surfaces disposed to engage the leads of the component on each side of the body.
  • each of the disks includes means forming the walls of each of the grooves which extend over the upper surfaces of the camming means for engaging the sides of the leads close to the body of the components to reduce bending moments on the leads when the transfer surface engages the component.
  • the combination defined in claim 6 further characterized by a carrier tray having a pair of parallel side members spaced to pass on each side of the drum means with a plurality of spaced vertically extending slots in each side member for receiving the oppositely extending lead wires of the component, means for moving the tray past the drum in synchronism with the drum, and means for transferring each of the components to the drum for printing and returning the component to the tray after printing.

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  • Ink Jet (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
US563151A 1966-07-06 1966-07-06 High speed transfer printer Expired - Lifetime US3424082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56315166A 1966-07-06 1966-07-06

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US3424082A true US3424082A (en) 1969-01-28

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US (1) US3424082A (de)
DE (1) DE1611312C3 (de)
GB (1) GB1183978A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850096A (en) * 1972-02-14 1974-11-26 Takeda Chemical Industries Ltd Apparatus for printing and drying rotatable objects
US3868900A (en) * 1973-09-04 1975-03-04 Hartnett Co R W Capsule precision printing apparatus and method
US3871295A (en) * 1973-09-04 1975-03-18 Hartnett Co R W Capsule orienting apparatus and method of spin printing
US3931884A (en) * 1973-09-24 1976-01-13 R. W. Hartnett Company Apparatus for transporting and orienting capsules
US4398457A (en) * 1980-06-30 1983-08-16 Tokyo Shibaura Denki Kabushiki Kaisha Marking apparatus for plastic encapsulated semiconductor devices
US4433622A (en) 1982-09-30 1984-02-28 Gti Corporation Printing station for axial lead handling system
US4604965A (en) * 1983-03-10 1986-08-12 Claude Dehais Apparatus for depositing a ring of material on the tips of ampoules or the like
EP0324046A1 (de) * 1988-01-15 1989-07-19 S O "Pharmachim" Vorrichtung zum automatisierten Markieren von Ampullen
US4885992A (en) * 1988-08-24 1989-12-12 General Motors Corporation Vertical rotary indirect printer
US4945827A (en) * 1988-04-22 1990-08-07 Saint-Gobain Vitrage Rotary tampon printing machine for printing the edge of automboile glazings
CN103264574A (zh) * 2013-05-23 2013-08-28 济南晶恒电子有限责任公司 一种二极管色环滚印装置及滚印方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108790393B (zh) * 2018-07-13 2024-05-03 济南鲁晶半导体有限公司 一种轴向封装二极管的印字设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121491A (en) * 1934-02-14 1938-06-21 Owens Illinois Glass Co Machine for decorating surfaces by stencil method
US2132818A (en) * 1936-06-18 1938-10-11 Owens Illinois Glass Co Method of and apparatus for decorating bottles and like articles
US2189637A (en) * 1938-02-21 1940-02-06 Oakville Basket Company Ltd Branding machine
US2994263A (en) * 1956-11-28 1961-08-01 Western Electric Co Apparatus for marking articles
US3139817A (en) * 1961-03-29 1964-07-07 Western Electric Co Apparatus for marking articles
US3198116A (en) * 1962-11-02 1965-08-03 Arcos Corp Elastomer die swellable into engagement with a cylinder by solvent contained in the ink

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121491A (en) * 1934-02-14 1938-06-21 Owens Illinois Glass Co Machine for decorating surfaces by stencil method
US2132818A (en) * 1936-06-18 1938-10-11 Owens Illinois Glass Co Method of and apparatus for decorating bottles and like articles
US2189637A (en) * 1938-02-21 1940-02-06 Oakville Basket Company Ltd Branding machine
US2994263A (en) * 1956-11-28 1961-08-01 Western Electric Co Apparatus for marking articles
US3139817A (en) * 1961-03-29 1964-07-07 Western Electric Co Apparatus for marking articles
US3198116A (en) * 1962-11-02 1965-08-03 Arcos Corp Elastomer die swellable into engagement with a cylinder by solvent contained in the ink

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850096A (en) * 1972-02-14 1974-11-26 Takeda Chemical Industries Ltd Apparatus for printing and drying rotatable objects
US3868900A (en) * 1973-09-04 1975-03-04 Hartnett Co R W Capsule precision printing apparatus and method
US3871295A (en) * 1973-09-04 1975-03-18 Hartnett Co R W Capsule orienting apparatus and method of spin printing
US3931884A (en) * 1973-09-24 1976-01-13 R. W. Hartnett Company Apparatus for transporting and orienting capsules
US4069753A (en) * 1973-09-24 1978-01-24 Hartnett Company Apparatus and methods for the random spin printing of capsules
US4398457A (en) * 1980-06-30 1983-08-16 Tokyo Shibaura Denki Kabushiki Kaisha Marking apparatus for plastic encapsulated semiconductor devices
US4433622A (en) 1982-09-30 1984-02-28 Gti Corporation Printing station for axial lead handling system
US4604965A (en) * 1983-03-10 1986-08-12 Claude Dehais Apparatus for depositing a ring of material on the tips of ampoules or the like
EP0324046A1 (de) * 1988-01-15 1989-07-19 S O "Pharmachim" Vorrichtung zum automatisierten Markieren von Ampullen
US4945827A (en) * 1988-04-22 1990-08-07 Saint-Gobain Vitrage Rotary tampon printing machine for printing the edge of automboile glazings
US4885992A (en) * 1988-08-24 1989-12-12 General Motors Corporation Vertical rotary indirect printer
CN103264574A (zh) * 2013-05-23 2013-08-28 济南晶恒电子有限责任公司 一种二极管色环滚印装置及滚印方法
CN103264574B (zh) * 2013-05-23 2015-06-17 济南晶恒电子有限责任公司 一种二极管色环滚印装置及滚印方法

Also Published As

Publication number Publication date
DE1611312C3 (de) 1973-09-20
GB1183978A (en) 1970-03-11
DE1611312B2 (de) 1973-03-15
DE1611312A1 (de) 1972-04-06

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