US3550152A - Razor blade marking apparatus - Google Patents

Razor blade marking apparatus Download PDF

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Publication number
US3550152A
US3550152A US677599A US3550152DA US3550152A US 3550152 A US3550152 A US 3550152A US 677599 A US677599 A US 677599A US 3550152D A US3550152D A US 3550152DA US 3550152 A US3550152 A US 3550152A
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US
United States
Prior art keywords
strip
marking
path
blade
magnets
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
US677599A
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English (en)
Inventor
Frank Samuel Martin
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.)
Gillette Co LLC
Original Assignee
Gillette Co LLC
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 Gillette Co LLC filed Critical Gillette Co LLC
Application granted granted Critical
Publication of US3550152A publication Critical patent/US3550152A/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/3412—Sorting according to other particular properties according to a code applied to the object which indicates a property of the object, e.g. quality class, contents or incorrect indication
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2066—By fluid current
    • Y10T83/207—By suction means
    • 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
    • Y10T83/8727—Plural tools selectively engageable with single drive

Definitions

  • This invention relates to razor blade processing and more particularly to apparatus for recording data on segments of steel strip razor blade material and to strip razor blade segments so marked.
  • Other objects of this invention are to provide such apparatus which is of simple and compact design adapted for incorporation in existing machinery; and to provide such apparatus which is simple to operate and which adds minimally to unit production cost.
  • Yet another object of this invention is to provide in such apparatus means for preventing deflection of strip material during and after marking.
  • the invention features, in addition to a strip razor blade segment magnetically marked, apparatus for marking having a plurality of magnet members positioned beside the blade strip path through the apparatus. Connected to each of several of the magnet members is a selector for switching certain of such magnet members to marking condition for marking in a predetermined variable pattern. Also connected to the magnet members is an actuator for causing the selected, activated magnet Patented Dec. 22, 1970 members to place a plurality of magnetic marks on the razor blade strip in the predetermined pattern.
  • the magnet members are permanent magnets mounted in individual housings and normally biased toward the blade strip path by springs. Individual selector levers move the magnets to marking condition.
  • a reference magnet is also included which is fixed in marking condition.
  • All the magnets are mounted in series on a support bar which is moved toward the blade strip path by a cam actuator so that the magnets contact the razor blade strip and place a series of magnetic marks on it.
  • the blade strip is moved in incremental steps and: the cam actuator moves the support bar when the blade strip is at rest.
  • a vacuum block is provided on the other side of the strip path from the magnet exposing a vacuum chamber to a strip passing thereby. The block thus prevents strip deflection during and after marking.
  • FIG. 1 is a diagrammatic plan view of razor blade strip processing apparatus incorporating the invention
  • FIG. 2 is an enlarged elevation of a portion of a razor blade strip to be marked
  • FIG. 3 is an enlarged plan view of marking apparatus according to the invention as incorporated into the blade strip processing apparatus of FIG. 1;
  • FIG. 4 is an enlarged, partially diagrammatic, elevation taken along the line 44 of FIG. 3;
  • FIG. 5 is an enlarged sectional view along the line 55 of FIG. 4;
  • FIG. 6 is an enlarged sectional view along the line 6-6 of FIG 4;
  • FIG. 7 is an elevation taken along the line 77 of FIG. 3;
  • FIG. 8 is an elevational taken along the line 8-8 of FIG. 7.
  • the razor blade strip processing apparatus 10 includes a plurality of components linearly arranged (the bends in the strip path 14 shown in FIG. 1 being used only to diagrammatically indicate continuity thereof) between a supply station 20 and a segmenting station 48.
  • Pullout rollers 24 positioned in the strip path 14 after supply station 20 draw razor blade strip 12 along the strip path 14 from the coil 13 at supply station 20. Pullout rollers 24 draw strip material from coil 13 at the average speed of the strip through the remainder of apparatus 10.
  • the razor blade 12 is a stainless steel strip (the principal metallurgical constituents of which, in addition to iron, are 0.40% carbon and 13.5% chromium) 0.0015 inch thick and 0.1895 inch wide. As shown in FIG. 2 the razor strip material 12 has a razor edge 15 which is fed in an upright position through apparatus 10 to avoid damage thereto.
  • a tension control and brake assembly 22 is provided between pullout rollers 24 and supply station 20 for exerting a tensional force on the strip material at the coil 13 thereof, at station 20, in the direction of rotation thereof and for braking the coil in response to a tension decrease below a predetermined level.
  • the strip path 14 forms a slack loop containing a greater amount of strip material therein than a segment length thereof, which loop is maintained by a flow of air from jet 26.
  • Photoelectric cell detectors 28 are provided at the position of the loop to sense any increase in the loop beyond the position therebetween to signal pullout rollers 24 to slow down or stop.
  • Microswitch 30 detects and signals any loss of the loop. From rollers 24 movement of strip material through apparatus 10 is incremental, the slack loop, however, permitting the strip material to be drawn from coil 13 at a relatively constant speed.
  • the strip path 14 proceeds between guide rollers 32 and thence to a vacuum tension control block 34 which exerts a retarding force on the strip material as it passes therefrom.
  • the vacuum tension control block 34 simply comprises a block adjacent the side of the strip path having perforations at that side through which a vacuum is applied to the side of the strip material as it moves along path 14. The frictional engagement of the strip 12 and the block 34 thereby engendered creates a tension in the strip 12 from that point forward in the apparatus.
  • the strip path 14 passes through a series of inspection stations 36 which are adapted to detect any defects in the strip 12 and to store the information in a mechanical memory cell (not shown) to signal actuation of a reject mechanism at a later stage when the strip 12 reaches the reject mechanism.
  • tab placement apparatus 38 which is positioned four strip segment lengths from the segmenting station 48, for operation in the stopped position of the incremental movement of a strip 12 therethrough.
  • tabs 16 and 17, FIG. 2 comprising generally U-shaped members with a perforation 18, 19 on one side thereof are fed from feed bowls 40 and placed on strip 12 side by side.
  • the tabs are fastened at placement apparatus 38 to the strip 12 by punches which move through apertures 18, 19 and deform the strip material and portion of tabs 16, 17 therebehind.
  • another vacuum tension control block 42 similar to block 34, to assist in tensioning the strip 12 and to prevent wavering of the strip 12 as tabs 16, 17 are placed thereon.
  • the strip path 14 moves through fine adjustment and tab detector apparatus 44, three segment lengths from station 48, which adjusts the position of the strip 12 prior to the placement of the next set of tabs 16, 17 by placement apparatus 38 to assure accuracy of placement thereof, and which detects the presence or absence of tabs and in the absence of one or more tabs signals an apparatus stop cricuit.
  • the strip 12 moves to bi-directional control apparatus 46, two segment lengths from station 48, which prevents any slack from moving backwardly through the strip 12 thereby to maintain tension therebehind and which also functions to exert a retarding tensioning influence on the strip 12 as it passes therefrom to the segmenting station 48.
  • the magnetic marking apparatus 50 Positioned along the strip path 14 after the control apparatus 46 is the magnetic marking apparatus 50 for placing a code indicative of its production history on the blade strip.
  • the apparatus 10 is provided with a segmenting station 48 at which means are provided for incrementally pulling the strip through the apparatus, for segmenting the strip at the position between tabs 16, 17, for depositing the strip in trays 49 on a conveyor therebelow, and for rejecting defective strip segments.
  • each carrier 52 has a bore 54 extending therethrough which is enlarged in the rear portion thereof, as shown in FIGS. and 6.
  • a generally cylindrical magnet housing 56 is positioned in each bore 54 extending through the front portion thereof aligned with the side of strip 12.
  • a collar 58 on each housing 56, in the enlarged portion of bore 54 is engaged by a compression spring 60 also in bore 54 and retained therein by a back plate 62 removably fastened to carrier 52 and extending across 'bore 54.
  • the compression spring 60 biases housing 56 forwardly toward strip 12 and collar 58, in addition to cooperating with spring 60 therefor, limits the extent to which the housing 56 can move.
  • each housing, facing strip path 14, 56 is a sintered permeant magnet 64, 0,120 inch in diameter ,(GE Type 22C53A), which is soldered at 66 to housing 56.
  • the magnets 64 are aligned with strip 13 for contact therewith on actuation of the apparatus 50 and each magnet has its North pole facing strip 12.
  • the carriers 52 are mounted on a support bar 68 and are locked against rotational movement thereon by keys 70 engaging the bar 68 and carriers 52.
  • Set screws 72 are provided in threaded bores in the carriers to engage a flat surface 74 on the bar 68 to locate the carriers axially along the bar 68.
  • All of the carriers are movable with support bar 68 between marking positions in which magnets 64 contact strip 12 and non-marking positions remote therefrom.
  • the carriers 52 are arranged on bar 68 in a predetermined code pattern, such as is illustrated in FIG. 3, of 5 sets I-V, each having four bits 1-4. Additionally a reference grouping, spaced from the other carriers, is provided including one fixed reference carrier, Ref, and a pair of selective reference carriers, A-B.
  • a selector is connected to each of the carriers 52, except the reference carrier, Ref, for activiating selectively only certain of magnets.
  • the selector comprises a lever 76 pivotally connected by pin 78 to the rear portion of the magnet housing 56.
  • Lever 76 is provided with a cam shaped bearing surface 80, bearing against cover plate 62 whereby, in the down position of lever 76, illustrated in FIG. 6 the magnet 64 is in an activated condition for contact with strip 12 on movement of carrier 52 to a marking position, and whereby, in the up position of lever 76, illustrated in broken lines in FIG. 6, the magnet is in an inactive condition withdrawn from strip 13 even in the marking position of carrier 52. Since the reference carrier 52, Ref. in FIG. 3, is always activated, no selector is provided therefor, as shown in FIG. 5.
  • the actuator comprises a cam mechanism timed to move the carriers 52 to a marking position when the strip 12, which is moved intermittently, is at rest.
  • the actuator includes a cam wheel 82 and also includes a cam follower 84 mounted on an arm 86 pivoted to frame 85.
  • the cam follower 84 is positioned beneath cam wheel 82 and is biased upwardly thereagainst by a tension spring 88 interconnected between arm 86 and a portion of frame thereabove.
  • a connecting rod 90 extends from arm 86 to one end of a lever 92 which in turn is keyed at its other end to rocker shaft 94.
  • rocker shaft 94 Also keyed to rocker shaft 94 is a rocker arm 96 which supports the support bar 68 on which carriers 52 are mounted.
  • rocker arm 96 which supports the support bar 68 on which carriers 52 are mounted.
  • the vacuum block 100 Abutting the strip path on the other side of strip 12 from magnets 64 is a vacuum block 100.
  • the vacuum block 100 includes a plane surface 101 abutting the strip path, a narrow groove 102 (0.031 inch wide and 0.015 inch deep) in surface 101 extending continuously along the strip path beyond the first and last of magnets 64.
  • Groove 102 is narrower than a strip as well as the magnet diameters and is positioned between the edges of the strip path 14 and the magnets 64. In the base of groove 102 are four.
  • spaced bores 104 (each 0.031 inch in diameter) communicating with A inch diameter rear chamber 106 ex 5 tending in block 100 between the bores 104.
  • a bore 108 extends from chamber 106 to the back of block 100 and is adapted for connection to a vacuum source (not shown) via a vacuum tube 110, shown in FIG. 3.
  • the vacuum block 100 prevents movement of strip 12 from its path by providing a backstop when the magnets 64 contact the strip 12 and by preventing movement of strip 12 with the magnets 64 as they are moved away from the strip path.
  • levers 76 are first actuated to activate or deactivate the magnets 64 according to the particular code pattern desired.
  • the processing apparatus is then operated to incrementally pull strip 12 along the strip path 14, at the marking apparatus 50.
  • Cam 82 timed in accordance with the incremental movement of strip 12, maintains carriers 52 in a non-marking position, shown in broken lines in FIG. 7, while the strip 12 is in motion.
  • the cam 82 is rotated to its actuating position causing movement of cam follower 84 and the related elements of the actuator, as previously explained, to move support bar 68 and the carriers 52 thereon to a marking position in which the actuated magnets 64 contact strip 12 and place a series of magnetic marks thereon.
  • the carriers 52 are moved to a non-marking position by the actuator.
  • a vacuum is created in groove 102 of vacuum block 100 to prevent any transverse movement of strip 12 between block 100 and magnets 64.
  • the marking apparatus 50 may be positioned at other places in the strip processing apparatus 10 consistent with operations being performed in such places. Likewise, if necessary because of limitations of space, the marking apparatus may be split into segments marking a portion of a single strip segment at different places along the strip path. It is only essential that the magnets be accurately spaced relative to the segments and to each other and that the composite marking of a segment occur between tabs 16, 17 of a single strip segment. Also, while manually actuated selectors have been shown for activating the magnets, an automatic device for setting the magnets may be used.
  • a strip segment thus marked may be readily identified at a later date if the occasion for so doing should arise simply by detecting the magnetic markings.
  • Apparatus for magnetically marking strip razor blade moved along a blade path comprising:
  • a selector connected to each of at least several of said magnet-carrier assemblies for switching certain of said several magnet members between a non-marking condition and a marking condition;
  • an actuator connected to said support bar for moving said support bar to cause said certain magnet in said marking condition to place a plurality of magnetic marks on the razor blade in said blade path according to a predetermined variable pattern.
  • said magnet members further include a reference magnet member connected to said actuator for actuation to place a magnetic mark on said razor blade strip in each marking operation.
  • magnet members are permanent magnets and each said selector moves a corresponding magnet between said marking condition and said non-marking condition.
  • the apparatus claimed in claim 4 further including a vacuum block, on the other side of said blade path from said magnets, said vacuum block having a plane surface abutting said blade path and a groove in said surface, comprising a vacuum chamber exposed to said path via said groove, said groove extending along said blade path between the positions of the edges of said strip razor blade thereat and beyond first and last of said magnets, said groove having a width narrower than the width of said strip razor blade.
  • Apparatus for magnetically marking strip razor blade moved along a blade path comprising a plurality of permanent magnet members, each magnet being positioned in a carrier, and said carriers being mounted on a movable support bar positioned beside said blade path; a selector connected to each of at least several of said permanent magnet members for moving its connected magnet member between a non-marking condition and a marking condition; and an actuator connected to said support bar for moving said magnets between a first position spaced from said blade path and a second position adjacent said blade path to cause said certain magnets in said marking condition to place a plurality of magnetic marks on the razor blade in said blade path according to a predetermined variable pattern.
  • each said selector is a lever connected to one said housing for selectively moving the magnet in said housing between said marking and non-marking conditions.
  • the apparatus claimed in claim 9 further including a vacuum block, on the other side of said blade path from said magnets, said vacuum block having a plane surface abutting said blade path and a groove in said surface, comprising a vacuum chamber exposed to said path via said groove, said groove extending along said blade path between the positions of the edges of said magnets and said strip razor blade thereat and beyond the first and last of said magnets, said groove having a width narrower than the width of said strip razor blade and the diameter of said magnets.
  • width of said groove is less than one half the width of said blade strip and the width of each said permanent magnet is less than three fourths the width of said blade strip.
  • said actuator includes a cam connected to said support bar, said cam adapted to cause movement of said magnets to said second position during the at rest portion of the incremental movement of said razor blade strip.

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  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US677599A 1967-10-24 1967-10-24 Razor blade marking apparatus Expired - Lifetime US3550152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67759967A 1967-10-24 1967-10-24

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Publication Number Publication Date
US3550152A true US3550152A (en) 1970-12-22

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ID=24719393

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Application Number Title Priority Date Filing Date
US677599A Expired - Lifetime US3550152A (en) 1967-10-24 1967-10-24 Razor blade marking apparatus

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US (1) US3550152A (es)
BR (1) BR6803260D0 (es)
CH (1) CH476554A (es)
DE (1) DE1804211C3 (es)
ES (1) ES359303A1 (es)
FR (1) FR1587144A (es)
GB (1) GB1214553A (es)
NL (1) NL6814655A (es)
SE (1) SE342167B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050115048A1 (en) * 2002-01-30 2005-06-02 Helmut Reccius Reshaping tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094368A (en) * 1960-09-15 1963-06-18 Tricot Equipment Company Inc Flaw recorder
US3215244A (en) * 1963-06-26 1965-11-02 Ibm Punching and printing apparatus including storage means
US3245064A (en) * 1956-11-23 1966-04-05 Brand Samuel Magnetic recording attachment
US3332084A (en) * 1963-01-07 1967-07-18 Cook Electric Co Incrementally driven recording apparatus
US3392913A (en) * 1966-07-28 1968-07-16 Hildaur L. Neilsen Paper punch with slidable punch actuating plate
US3399587A (en) * 1965-10-26 1968-09-03 Int Paper Canada Sheet handling method and apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3245064A (en) * 1956-11-23 1966-04-05 Brand Samuel Magnetic recording attachment
US3094368A (en) * 1960-09-15 1963-06-18 Tricot Equipment Company Inc Flaw recorder
US3332084A (en) * 1963-01-07 1967-07-18 Cook Electric Co Incrementally driven recording apparatus
US3215244A (en) * 1963-06-26 1965-11-02 Ibm Punching and printing apparatus including storage means
US3399587A (en) * 1965-10-26 1968-09-03 Int Paper Canada Sheet handling method and apparatus
US3392913A (en) * 1966-07-28 1968-07-16 Hildaur L. Neilsen Paper punch with slidable punch actuating plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050115048A1 (en) * 2002-01-30 2005-06-02 Helmut Reccius Reshaping tool

Also Published As

Publication number Publication date
FR1587144A (es) 1970-03-13
DE1804211C3 (de) 1973-01-04
NL6814655A (es) 1969-04-28
ES359303A1 (es) 1970-06-01
BR6803260D0 (pt) 1973-01-23
CH476554A (de) 1969-08-15
DE1804211A1 (de) 1969-05-14
DE1804211B2 (de) 1972-06-08
GB1214553A (en) 1970-12-02
SE342167B (es) 1972-01-31

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