US3768359A - Cam-controlled perforators - Google Patents

Cam-controlled perforators Download PDF

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Publication number
US3768359A
US3768359A US3768359DA US3768359A US 3768359 A US3768359 A US 3768359A US 3768359D A US3768359D A US 3768359DA US 3768359 A US3768359 A US 3768359A
Authority
US
United States
Prior art keywords
punch
cam
perforator
coupling
rocker
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
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English (en)
Inventor
R Koefferlein
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US3768359A publication Critical patent/US3768359A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/02—Methods or arrangements for marking the record carrier in digital fashion by punching
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8759—With means to connect or disconnect tool and its drive
    • Y10T83/8761—Continuously moving drive means [e.g., "gag"]
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8843—Cam or eccentric revolving about fixed axis

Definitions

  • the cou' pling rocker has a claw-shaped end which engages the punch in order to return the punch from the perforating position to an inoperative position.
  • the cam advantageously has a peripheral camming profile composed of mutually symmetrically disposed sections for deflection of the coupling rocker and coupling element in phased relation to one another and to provide unambiguous stationary phases.
  • the present invention relates to code perforators in which individual perforator punches are coupled to respective operating cams through individual coupling elements, and more particularly to code perforators wherein each of which coupling elements is pivotally arranged upon a rotatably-mounted coupling rocker formed at one end as the armature of a control solenoid, and in which perforating movements of a punch are prevented by the energizing of the solenoid, so that the arm of the rocker which forms an armature is held in a position in which the coupling element is disengaged from the punch.
  • Cam-controlled motion transmitting arrangements should not be subject to play or to bounce effects, and should be insensitive throughout a wide range to fluctuations in the environmental conditions and changes in the corresponding forces involved, such as for example changes in friction and tolerances in the in spring loads or solenoid forces.
  • the foregoing requirements have been met in general, and thus a code perforator can be constructedwhich is very reliable in operation.
  • a code perforator usually comprises a plurality of side-by side punching devices disposed 'transversly of a tape which is movable with respect to the punches, and each individualy punch of a punching device has associated therewith a coupling element which is moved intoposition between an intermediate element operated by the perforator, cam and the associated punch itself when the punch is to carry out a perforation operation.
  • Selective coding is provided through the utilization of an associated solenoid whereby the coupling rocker is positioned to hold the punch out of the operating position through the energization of the associated solenoid.
  • each punch is assigned a solenoid having an armature connected to the associated coupling element. All of the solenoid armatures attached to their coupling elements, are placed in proximity to the associated solenoid once during each perforation cycle by an additional cam on a second cam shaft, and the energization of the associated solenoid thus constitutes the criterion of selection of the individual punches.
  • the justdescribed known arrangement is equipped with a rocking lever which is operated by still another cam on a third cam shaft.
  • An object of the present invention therefore is to provide a code perforator of the kind described in which when the coupling element is deflected, the punch moves only through that distance which is essential for proper perforation.
  • Another object of the invention is to provide a code perforator having improved conditions of engagement between the coupling element and the punch.
  • the features of the invention therefore reside in a code perforator wherein a single perforator cam carried on a single rotating cam shaft controls all the motions of a punch; wherein a coupling rocker and a coupling element pivotally carried on the coupling rocker slide on the perforator cam; and wherein the coupling rocker has a claw which engages the punch in order to return the punch from the perforating position into an inoperative position.
  • This construction obviates the necessity for the specially-provided cams and controlled cams shafts which were hitherto required and the number of mechanically moved components may additionally be reduced because the control rocker is no longer needed in that the coupling rocker is deflected directly by the perforator cam.
  • the need for the independent return bar for returning the punches into the inoperative position is negated because the return function is also carried out by the coupling rocker.
  • the profile of the perforator cam is perferably composed of mutually symmetrically-disposed sections, so that the coupling element and the coupling rocker are deflected in a phased relationship to one another and have unambiguous stationary phases (dwell time).
  • This structure provides the advantage that the time taken by the introduction of the coupling element between the cam and the punch, up to the commencement of the punch motion, is substantially longer than heretofore provided so that there is a greater freedom of choice in selecting the movement and acceleration conditions which govern the coupling element and the coupling rocker.
  • FIG. 1 is an elevational view of a code perforator constructed in accordance with the principles of the present invention.
  • FIG. 2 is a timing diagram of the movement of the coupling rocker and coupling element of the perforator illustrated in FIG. 1.
  • each of the punches 1 (only one punch being shown), which are assembled in the guide 11 for longitudinal movement, are derived from the rotational motion of a perforator cam 2 which is fixed on a rotatable cam shaft 3.
  • a coupling element 4 is provided which is pivotally carried on a coupling rocker 5. All the coupling rockers 5 of the total perforator mechanism are mounted for common rotational movement on a shaft or spindle 6 and each comprises two arms 5a, 5b which extend at substantially right-angles to one another.
  • the other side of this arm 5b is designed as an armature 7 for solenoid system 9.
  • Each coupling element 4 and each coupling rocker 5 are held in mechanical engagement with the associated perforator cam 2 by a compression spring 10 which is disposed between the coupling element 4 and that arm 5 a of the coupling rocker 5 which extends substantially perpendicular to the punch 1.
  • This arm 5a of the coupling rocker 5 has a claw or tip 12 which engages the punch 1 and whose function will be hereinafter described.
  • the perforator cam 2 illustrated in this embodiment is designed as a three-lift cam so that'with each complete revolution of the cam three perforating cycles are carried out.
  • the coupling rocker 5 With rotation of the perforator cam 2 in the direction of the arrow 4), the coupling rocker 5 is deflected in the clockwise direction and in so doing the armature 7 is pivoted to a position adjacent to the solenoid system 9. If the relevant punch 1 is not to be operated during the next perforating cycle, the solenoid systern 9 is energized and holds the armature 7 back to prevent the coupling rocker from following the perforator cam 2.
  • the coupling element 4 is positioned down (as viewed in the drawing) during this perforating cycle and the coupling element 4 does not come into engagement with the punch 1 as it follows perforator cam. 2. Therefore, the punch 1 remains stationary in its inoperative position. If, on the other hand, the solenoid system 9 is not energized, then the coupling rocker 5, after the brief movement of its follower arm 5b and the armature 7 to a position adjacent the solenoid system 9, is rocked back in the opposite direction. By this action the coupling element 4 is pivotally positioned beneath the punch 1.
  • the foregoing cycle of motion is illustrated in the graph of FIG. 2.
  • the traces S4 and S5 indicate, respectively, the deflections of the coupling element and coupling rocker 5.
  • the graph shows that there are essentially two phased motion sequences each of which is characterised by a clear and unambiguous stationary phase which defines the dwell time of the components 4 and 5. Only about three fourth of the cycle time is needed for the perforating stroke St, this time being indicated by the shaded area.
  • the essential advantage of this phased relationship of the motion sequences is that there is adequate time to slide the coupling element 4 beneath the punch 1. This sliding motion takes place during the maximum travel of the coupling rocker 5 while the coupling element 4 itself is in its stationary phase. It is therefore possible to restrict the travel of the punch 1 to the absolute minimum, which advantageously leads to an increase in the speed of operation of the perforator.
  • the motion sequences chosen for the coupling element 4 and the coupling rocker 5, also have the property that in terms of their individual parts they are symmetrical with respect to an axis parallel to the time'axis. This is particularly effective during the return motion of the punches 1, during which time the coupling rocker 5 and the coupling element 4, which are positively guided on the perforator cam 2, cannot bind.
  • the advantage of bind-free operation is of particular importance because an intolerable degree of wear of the perforator cam 2 and the guide surfaces of the coupling element 4 and coupling rocker 5 is consequently avoided.
  • a lubricator felt 14 is provided to which supply oil or grease to the sliding surfaces.
  • the lubricator felt 14 may be arranged beneath the perforator cam 2, or, if otherwise advantageous, to another suitable position.
  • the invention is not limited to the use of a triplelift cam as the perforator cam.
  • the essentials of the invention reside primarily in the motion sequences of the coupling element and the coupling rocker, which are determined by the profile of the perforator cam.
  • one end of the punch is free of any mechanically moved components;
  • a perforator checking device could, for example, be constituted by switching oscillatory circuits and employed to monitor the motion of the punch. 7
  • a code perforator comprising: a movable punch movable between a perforating position and a nonperforating position; a single rotating perforator cam; a pivotally mounted coupling rocker including a claw for engaging said punch and slidable on said arm for moving said punch to its non-perforating position; and a coupling element pivotally mounted on said coupling rocker and slidable on said cam for moving said punch to its perforating position.
  • a code perforator according to claim 1 comprising a compression spring disposed between said coupling rocker and said coupling element to ensure positive engagement with said cam.
  • a code perforator comprising a punch stop which defines the limit of movement of said punch toward its non-perforating position.
  • a code perforator according to claim 1, wherein said coupling rocker comprises a pair of mutually perpendicular arms, one of said arms including means forming a solenoid armature and a bearing for sliding against said perforator cam.
  • a code perforator comprising a solenoid energizable to hold said coupling rocker in a position to maintain said punch in its nonperforating position.
  • a code perforator according to claim 1, comprising means for continuously lubricating said cam.
  • said lubrication means includes a felt in sliding engagement with said cam.
  • a code perforator comprising: a punch mounted for movement between a punching position and a nonpunching position, said punch having an aperture therein; a single rotatable cam having segments associ ated with said punching and non-punching positions of said punch; an energizable solenoid; a pivotally mounted coupling rocker including a first arm extending into the aperture of said punch and a second arm having a bearing slidably engaging said rotatable cam, said second arm including means defining an armature for solenoid whereby said punch may be prevented from travel to its punching position via said coupling rocker upon energization of said solenoid; a coupling element pivotally carried on said coupling rocker for sliding engagement with said rotatable cam and for engagement with said punch for moving said punch to its punching position; and resilient means disposed between and bearing on said first arm and said coupling element to urge same toward said rotatable cam.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US3768359D 1970-01-30 1971-01-19 Cam-controlled perforators Expired - Lifetime US3768359A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702004287 DE2004287B2 (de) 1970-01-30 1970-01-30 Nockengesteuertes stanzwerk zum markieren von aufzeichnungstraegern

Publications (1)

Publication Number Publication Date
US3768359A true US3768359A (en) 1973-10-30

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Family Applications (1)

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US3768359D Expired - Lifetime US3768359A (en) 1970-01-30 1971-01-19 Cam-controlled perforators

Country Status (7)

Country Link
US (1) US3768359A (enrdf_load_stackoverflow)
BE (1) BE762284A (enrdf_load_stackoverflow)
DE (1) DE2004287B2 (enrdf_load_stackoverflow)
FR (1) FR2077025A5 (enrdf_load_stackoverflow)
GB (1) GB1288711A (enrdf_load_stackoverflow)
LU (1) LU62503A1 (enrdf_load_stackoverflow)
NL (1) NL7100774A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638731A (en) * 1985-06-14 1987-01-27 Sankyo Manufacturing Co., Ltd. Press machine
US6269721B1 (en) * 1998-11-27 2001-08-07 Primax Electronics Ltd. Electric paper punch
USD447924S1 (en) 2000-11-02 2001-09-18 Milwaukee Electric Tool Corporation Handle arrangement for a reciprocating saw
US20020038593A1 (en) * 1997-03-28 2002-04-04 Ryuichi Ishikawa A device for cutting optical fiber and a method for cutting optical fiber
US20030167892A1 (en) * 2002-03-09 2003-09-11 Klaus Foerderer Feeding mechanism for a microtome
USD487384S1 (en) 2000-11-02 2004-03-09 Milwaukee Electric Tool Corporation Corded reciprocating saw
US20040174345A1 (en) * 2001-08-01 2004-09-09 Microsoft Corporation Correction of alignment and linearity errors in a stylus input system
US6983877B2 (en) 2002-01-28 2006-01-10 Ko Joseph Y Automatic hole punch
US20060117579A1 (en) * 1998-08-14 2006-06-08 Zeiler Jeffrey M Movable handle for a power tool
US20100095537A1 (en) * 2005-09-30 2010-04-22 Serdynski David P Tool and method of using same
US8061043B2 (en) 2006-11-15 2011-11-22 Milwaukee Electric Tool Corporation Power tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856175A (en) * 1927-10-24 1932-05-03 Bethlehem Shipbuilding Corp Punching machine
US2951534A (en) * 1957-03-01 1960-09-06 Ibm High speed punch
US3022000A (en) * 1957-07-02 1962-02-20 Texas Instruments Inc Multiple punching machine for paper tape, cards, etc.
US3132554A (en) * 1962-01-12 1964-05-12 Gen Mills Inc Paper punch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856175A (en) * 1927-10-24 1932-05-03 Bethlehem Shipbuilding Corp Punching machine
US2951534A (en) * 1957-03-01 1960-09-06 Ibm High speed punch
US3022000A (en) * 1957-07-02 1962-02-20 Texas Instruments Inc Multiple punching machine for paper tape, cards, etc.
US3132554A (en) * 1962-01-12 1964-05-12 Gen Mills Inc Paper punch

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638731A (en) * 1985-06-14 1987-01-27 Sankyo Manufacturing Co., Ltd. Press machine
US7013776B2 (en) * 1997-03-28 2006-03-21 Mitsubishi Rayon Co., Ltd. Device for cutting optical fiber and a method for cutting optical fiber
US20020038593A1 (en) * 1997-03-28 2002-04-04 Ryuichi Ishikawa A device for cutting optical fiber and a method for cutting optical fiber
US7497152B2 (en) 1998-08-14 2009-03-03 Milwaukee Electric Tool Corporation Movable handle for a power tool
US7308764B2 (en) 1998-08-14 2007-12-18 Milwaukee Electric Tool Corporation Power tool with movable handle
US7191526B2 (en) 1998-08-14 2007-03-20 Milwaukee Electric Tool Corporation Movable handle for a power tool
US20060117579A1 (en) * 1998-08-14 2006-06-08 Zeiler Jeffrey M Movable handle for a power tool
US6269721B1 (en) * 1998-11-27 2001-08-07 Primax Electronics Ltd. Electric paper punch
USD475907S1 (en) 2000-11-02 2003-06-17 Milwaukee Electric Tool Corporation Handle arrangement for a reciprocating saw
USD487384S1 (en) 2000-11-02 2004-03-09 Milwaukee Electric Tool Corporation Corded reciprocating saw
USD447924S1 (en) 2000-11-02 2001-09-18 Milwaukee Electric Tool Corporation Handle arrangement for a reciprocating saw
US20040174345A1 (en) * 2001-08-01 2004-09-09 Microsoft Corporation Correction of alignment and linearity errors in a stylus input system
US6983877B2 (en) 2002-01-28 2006-01-10 Ko Joseph Y Automatic hole punch
US20060150790A1 (en) * 2002-01-28 2006-07-13 Ko Joseph Y Automatic hole punching devices and methods
US20030167892A1 (en) * 2002-03-09 2003-09-11 Klaus Foerderer Feeding mechanism for a microtome
US7313993B2 (en) * 2002-03-09 2008-01-01 Leica Microsystems Nussloch Gmbh Feeding mechanism for a microtome
US20100095537A1 (en) * 2005-09-30 2010-04-22 Serdynski David P Tool and method of using same
US8061043B2 (en) 2006-11-15 2011-11-22 Milwaukee Electric Tool Corporation Power tool
US8640346B2 (en) 2006-11-15 2014-02-04 Milwaukee Electric Tool Corporation Power tool

Also Published As

Publication number Publication date
LU62503A1 (enrdf_load_stackoverflow) 1971-08-11
BE762284A (fr) 1971-07-29
DE2004287B2 (de) 1973-03-15
FR2077025A5 (enrdf_load_stackoverflow) 1971-10-15
GB1288711A (enrdf_load_stackoverflow) 1972-09-13
NL7100774A (enrdf_load_stackoverflow) 1971-08-03
DE2004287A1 (de) 1971-08-05

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