US3813982A - Knife cutter - Google Patents

Knife cutter Download PDF

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Publication number
US3813982A
US3813982A US00342642A US34264273A US3813982A US 3813982 A US3813982 A US 3813982A US 00342642 A US00342642 A US 00342642A US 34264273 A US34264273 A US 34264273A US 3813982 A US3813982 A US 3813982A
Authority
US
United States
Prior art keywords
knife
rotary
cutter
rotary knife
stationary
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
US00342642A
Other languages
English (en)
Inventor
H Waibel
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.)
Singer Co
Original Assignee
Singer Co
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 Singer Co filed Critical Singer Co
Priority to US00342642A priority Critical patent/US3813982A/en
Priority to GB249774A priority patent/GB1459817A/en
Priority to JP49009670A priority patent/JPS49121287A/ja
Priority to CA190,737A priority patent/CA1003746A/en
Priority to NL7400890A priority patent/NL7400890A/xx
Priority to IT19938/74A priority patent/IT1007151B/it
Priority to FR7407798A priority patent/FR2222221B3/fr
Priority to DE2411989A priority patent/DE2411989A1/de
Application granted granted Critical
Publication of US3813982A publication Critical patent/US3813982A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B5/00—Details of, or auxiliary devices for, ticket-issuing machines
    • G07B5/02—Details of, or auxiliary devices for, ticket-issuing machines for cutting-off or separating tickets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/66—Applications of cutting devices
    • B41J11/70—Applications of cutting devices cutting perpendicular to the direction of paper feed
    • B41J11/706—Applications of cutting devices cutting perpendicular to the direction of paper feed using a cutting tool mounted on a reciprocating carrier
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C11/00—Output mechanisms
    • G06C11/10—Arrangements for feeding single sheets or continuous web or tape, e.g. ejection device; Line-spacing devices
    • 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
    • Y10T83/303—With tool sharpener or smoother
    • 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
    • Y10T83/8717—By deforming resilient tool or tool support
    • 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
    • Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]
    • Y10T83/8778—Ledger blade
    • 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
    • Y10T83/8798—With simple oscillating motion only
    • Y10T83/8804—Tool driver movable relative to tool support
    • Y10T83/8805—Cam or eccentric revolving about fixed axis
    • 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
    • Y10T83/8798—With simple oscillating motion only
    • Y10T83/8817—Axially entending cutting edge
    • Y10T83/8818—Axially progressing cut
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9447—Shear type

Definitions

  • Knife cutters for cutting media rolled off a spool have been used in postal meters, as best described and claimed in U.S. Pat. No. 3,062,133 to I. H. Lundguist et al., which issued on Nov. 6, 1962.
  • the knife cutter shown comprised a rotary cutter rod and a stationary knife blade which cut the paper transversely upon rotation of the rod.
  • the rotary rod had a flat surface which formed the cutting edge and, as the rod was rotated with the paper therebetween, the cutting edge engaged the cutting edge of the stationary blade for the shearing effect.
  • the knife cutter as disclosed in the patent, and as actually made, however, had maintenance problems.
  • the positioning of the blade edges relative to each other was critical for proper shearing and it was difficult to align the two even though a guide means was provided. Too, guide means was difficult to disassemble when it was necessary to remove the stationary blade for sharpening and it.was similarly difficult to reassemble and align. This made this device difficult and expensive to maintain.
  • the stationary knife and the rotary rod-like knife to provide the shearing effect is again used, but in this invention the stationary knife is bowed and flexible, being bowed and flexed toward the rotary knife.
  • This flexure and bend which yields to the rotation of the rotary knife, provides the enhanced shearing effect, makes the two blades self-sharpening and also renders the positioning of the blades to one another in the guide means less critical.
  • the simplified mounting reduces the maintenance problems and provides a much better knife cutter for both narrow and wide paper.
  • a knife cutter having a rotary knife and a stationary knife, together with actuating means for rotating the rotary knife.
  • the stationary knife is flexible and bowed toward the rotary knife, which is flexed by rotation of the cutting knife to enhance the shearing effect and to cause the knives to continually sharpen each other.
  • the assembly is also provided with a simple guide means for positioning the stationary knife, and the rotary knife is pivotally mounted for access to both the stationary and rotary knives.
  • FIG. 1 is a perspective of a cutaway portion of a data terminal schematized to illustrate the relationship of the customer receipt station in which the cutting device forming the present invention is incorporated and its co-operation with the rest of the data terminal, including the matrix printer which prints on the receipt to be cut for presentation to the customer;
  • FIG. 2 is a side view of the knife cutter illustrating the position of the rotary knife blade in cutting position and also in phantom, illustrating the position for access to the stationary knife;
  • FIG. 3 is also a side view of the knife cutter, but looking in the opposite direction of FIG. 2;
  • FIG. 4 is an elevational cross-sectional view of the knife cutter taken along the line 4-4 of FIG. I and looking in a direction of the arrows;
  • FIG. 5 is an elevational cross-sectional view taken along the line 55 of FIG. 1 and looking in a direction of the arrow, but additionally showing the rotary knife pivoted away from the stationary knife and further showing the manner in which the'stationary knife can be easily removed from its position for maintenance purposes;
  • the data terminal 10 (with cover removed for purposes of clarity) is shown as comprising, overall, a carriage l2 movable laterally with respect to a frame 14, a platen 16 having three print stations 18, 20 and 22, and an appropriate keyboard 24.
  • the three print stations 18, 20 and 22 are, respectively, a receipt station where the customers receipt is printed (if a receipt is required), an audit station where the storekeepers record (audit trail) of all transactions are printed, and a form station where the customer's order form or bill of sale is printed, if required.
  • the carriage 12 will move, not only from the printing position shown, viz, at the audit station and receipt station, but to the form station and audit station as well as traversing each pairs of stations so that appropriaterows and columns of. data entered into the data terminal at the keyboard 24 is appropriately printed out.
  • the carriage 12 is mounted on a pair of bars 26 and 28 to hold the carriage in parallel relationship with the platen l6 and the rest of the data terminal and traverse movement on the parallel bars is accomplished by a suitable drive mechanism 30 including a belt 12 attached to carriage I2, and pulley means 34 motivated by a reversible motor (not shown).
  • a receipt 16 is printed in the receipt station 18 and an audit trail 38 is printed in the audit station 20 when the carriage 12 is in the position shown as the two record media (paper) are moved forward, i.e., in the direction of the keyboard 24, and forms a suitable supply, such as a roll of paper, by a suitable roller feed mechanism driven by a motor and clutch means 42 coupled to shaft 44.
  • a form 46 such as customer order form or bill of sale, is printed in station '22 at the same time the audit trail 38 is being printed.
  • the audit trail 38 is rolled onto a spool 48 partially shown in FIG. 11, while the receipt 36 is severed, when a complete transaction is recorded, by a suitable cutting mechanism, indicated in its entirety as 49'.
  • the forms station is provided with a pair of electronic sensing means 5(1) and 52 which determine when a form 46 is properly located in the forms station, otherwise the terminal is inhibited from operating; suitable electronics being provided for this purpose.
  • Rollers 54 feed the form in a direction opposite from the direction of travel of the audit trail by suitable gearing to couple the rollers to shaft 42 which moves the form and audit trail or audit trail and receipt, or audit trail alone, as the I case may be incrementally, in response to and in combination with the printing mechanisms to form rows and columns of data as determined by the input to the keyboard 24.
  • the carriage 12 is also provided with a pair of matrix printers 56 and 58 capable of printing on two of the three stations at the same time, viz, the receipt station and the audit station, or when the carriage is positioned to the left from that shown in the form station and audit station.
  • the matrix printers in cooperation with suitale electronics described and claimed in the copending applications, supra, print on the receipt upside down relative to the printing on the audit trail and form.
  • This upside down printing on the receipt enables the complete transaction, such as a sale, to be recorded and totaled in the manner in which any transaction is normally read, i.e., top to bottom, for the benefit of the customerv
  • the knife cutter is identified in its entirety as 62 and includes a rod-like rotary knife 64 and a stationary knife 66, both mounted in a pair of side plates 68 and '70.
  • Each of the side plates are provided with an opening in which the knife blades operate and end walls 72 (one shown in FIG. 2) form a stop or shoulder against which the stationary knife rests when inserted in notches 74 (one shown in FIG. 2). Shoulders 72 and notches 74 serve as a guide to precisely locate the stationary knife in the knife cutter.
  • the rotary knife on the other hand, is mounted on a pair of pivot arms 76, 78 which pivots about a shaft 80 mounted in the side plates; the pivot arms being provided with bearing surfaces in the form of notches 82 (one shown in FIG. 2) opening toward the stationary knife as shown in FIG. 2. These bearing surfaces support the rotary knife for rotation therein.
  • link arm 84 there is also provided a linkage in the form of link arm 84 and lever 86 pivotally connected at 88.
  • Lever 86 is fixed to the rotary knife and serves to rotate the knife upon actuation of the link arm 84.
  • the central portion of the rod is machined or cut away as at 88, providing a flat surface extending axially the length of the rod except, of course, near the ends which provide the bearing surfaces for rotation in bearing surfaces 82.
  • the flat portion thus provides a precise cutting edge 90 on the rotary knife which effects a shearing action upon actuation by engagement with the cutting edge 92 on the stationary blade formed by the tapered surface 94.
  • the linkage for rotating the rotary knife is actuated by any suitable means, such as cams or solenoids, cam 96 being shown, which engages a cam follower 98 mounted on a bail assembly 100.
  • the bail assembly comprises two cam arms I02 and 104 joined in the center 106 so as to loop over a shaft 108 which rotates therewith.
  • the ball assembly is biased in one direction by a returnspring 110, the position shown in FIG. 4, which is attached at one end B04 and at the other end to the side plate 70.
  • actuation by the cam 96 serves to move the bail assembly against the operation of the bias spring 110, causing movement of a second cam follower 112 engaged by arm 104 in a clearance slot 118, said cam follower being mounted on the link 84 (FIG. 3) and fixed to the arm 104 by rivet 129.
  • the bias spring will cause the bail assembly to return to its original position, such as shown in FIG. 4.
  • paper such as that shown at 34 in FIG. I spooled from a roll (not shown) is fed through a pair of guides E22 and 124 by a pair of spring-biased feed rollers 126 and 128 beneath the flat edge 88 of the rotary knife when the latter is in a position shown in FIG. 4.
  • Operation of the cam 96 at the appropriate time as sensed by a signal entered into the keyboard 24, will move cam follower 96 upeardly, causing actuation of the bail assembly and the linkage 84, 86 to rotate the rotary knife in a direction as indicated in FIGS. 4 and 7, with knife edges 90 and 92 severing the paper transversely thereat.
  • the bias spring will return the rotary knife to a position shown in FIG. 4, permitting the next portion of the paper to pass across the knife by the operation of the feed rollers.
  • FIGS. 6 and 7 To accomplish the self-sharpening feature, attention is directed to FIGS. 6 and 7 and again to FIG. 1.
  • the stationary knife 66 is shown bowed and flexed in the direction of the rotary knife.
  • the slope on the cutaway surface 88 which forms a slightly sloped surface of about from one end of the rod to the other, defining a slope to the cutting edge 90 so that upon rotation of the rotary knife, this cuttingedge engages the bow in the stationary knife; the latter yielding, engaging this edge so as to continually be urged against the cutting edge of the rotary knife, yet flexing upon influence of the cutting edge, thus causing a continually sharpening action as well as a shearing action on the material being cut.
  • the automatic alignment of the stationary knife is a combination of the bow in the knife, the simplicity of the guide means 72 and 74, plus the ease in access to the stationary knife and rotary knife.
  • the rotary knife 66 can be pivoted away from the stationary knife by the pivot arms 76, 78 by the simple removal of the fastening means 130, which, as shown, is a hexagonal rod 132 and nut disposed through holes in the pivot arms 76, 78 and side plates 68, 70.
  • the pivoting of the rotary blade away from the stationary knife enables the stationary knife to be removed from the notches 74 as shown in H6.
  • a knife cutter which provides an enhanced shearing effect and has the additional advantage of providing for automatic positioning as well as selfsharpening, which accomplishes the ease of maintenance as aforesaid mentioned.
  • the self-sharpening feature has been found to work extremely well in practical application. As a matter of fact, after positioning, the self-sharpening feature allows the cutter to break in," requiring less torque to rotate the rotary knife without loss of cutting ability.
  • a knife cutter for shearing record media such as paper and including means for feeding such media through said cutter comprising:
  • a rotary knife provided with a cutting edge
  • a stationary knife provided with a cutting edge
  • said stationary knife being flexible and bowed toward the rotary knife and engageable therewith and subject to being flexed upon rotation of the rotary knife to perform a shearing operation on the record media located between said knives;
  • said mounting means comprises guide means for positioning the stationary knife and pivotal arms for positioning the rotary knife in shearing engagement with the stationary knife.
  • actuating means comprises camming means and linkage means, the latter being attached to the rotary knife and movable upon actuation of the camming means to rotate the rotary knife.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Handling Of Sheets (AREA)
US00342642A 1973-03-19 1973-03-19 Knife cutter Expired - Lifetime US3813982A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00342642A US3813982A (en) 1973-03-19 1973-03-19 Knife cutter
GB249774A GB1459817A (en) 1973-03-19 1974-01-18 Knife cutter
JP49009670A JPS49121287A (it) 1973-03-19 1974-01-22
NL7400890A NL7400890A (it) 1973-03-19 1974-01-23
CA190,737A CA1003746A (en) 1973-03-19 1974-01-23 Knife cutter
IT19938/74A IT1007151B (it) 1973-03-19 1974-01-29 Dispositivo di taglio
FR7407798A FR2222221B3 (it) 1973-03-19 1974-03-07
DE2411989A DE2411989A1 (de) 1973-03-19 1974-03-13 Vorrichtung zum schneiden von aufzeichnungsmedium wie papier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00342642A US3813982A (en) 1973-03-19 1973-03-19 Knife cutter

Publications (1)

Publication Number Publication Date
US3813982A true US3813982A (en) 1974-06-04

Family

ID=23342664

Family Applications (1)

Application Number Title Priority Date Filing Date
US00342642A Expired - Lifetime US3813982A (en) 1973-03-19 1973-03-19 Knife cutter

Country Status (8)

Country Link
US (1) US3813982A (it)
JP (1) JPS49121287A (it)
CA (1) CA1003746A (it)
DE (1) DE2411989A1 (it)
FR (1) FR2222221B3 (it)
GB (1) GB1459817A (it)
IT (1) IT1007151B (it)
NL (1) NL7400890A (it)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233800A (en) * 1978-12-20 1980-11-18 Amer-O-Matic Corporation Envelope opener
US5010795A (en) * 1986-12-01 1991-04-30 Jozef Kania Apparatus for cutting metal and plastic sheet
US6071054A (en) * 1996-06-21 2000-06-06 Tebo; Glenn J. Deck fasteners
US6418828B1 (en) 1999-06-24 2002-07-16 The Procter & Gamble Company Force-adjustable rotary apparatus for working webs or sheets of material
US20060132584A1 (en) * 2004-12-20 2006-06-22 Jobmann Brian C System and Method for Feeding and Cutting Media for Continuous Printing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1593106A (en) * 1977-03-28 1981-07-15 Lrc Inc Printing apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1005879A (en) * 1910-07-25 1911-10-17 Simplex Letter Opener Company Device for opening envelops.
US3512439A (en) * 1967-09-25 1970-05-19 Pako Corp Film cutter
US3568556A (en) * 1968-06-04 1971-03-09 Hell Rudolf Dr Ing Kg Shearing device for web strips

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1005879A (en) * 1910-07-25 1911-10-17 Simplex Letter Opener Company Device for opening envelops.
US3512439A (en) * 1967-09-25 1970-05-19 Pako Corp Film cutter
US3568556A (en) * 1968-06-04 1971-03-09 Hell Rudolf Dr Ing Kg Shearing device for web strips

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4233800A (en) * 1978-12-20 1980-11-18 Amer-O-Matic Corporation Envelope opener
US5010795A (en) * 1986-12-01 1991-04-30 Jozef Kania Apparatus for cutting metal and plastic sheet
US6071054A (en) * 1996-06-21 2000-06-06 Tebo; Glenn J. Deck fasteners
US6418828B1 (en) 1999-06-24 2002-07-16 The Procter & Gamble Company Force-adjustable rotary apparatus for working webs or sheets of material
US20060132584A1 (en) * 2004-12-20 2006-06-22 Jobmann Brian C System and Method for Feeding and Cutting Media for Continuous Printing

Also Published As

Publication number Publication date
FR2222221A1 (it) 1974-10-18
DE2411989A1 (de) 1974-09-26
GB1459817A (en) 1976-12-31
IT1007151B (it) 1976-10-30
JPS49121287A (it) 1974-11-20
CA1003746A (en) 1977-01-18
NL7400890A (it) 1974-09-23
FR2222221B3 (it) 1976-12-17

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