US3894461A - Apparatus for the longitudinal cutting of narrow strips - Google Patents

Apparatus for the longitudinal cutting of narrow strips Download PDF

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Publication number
US3894461A
US3894461A US437395A US43739574A US3894461A US 3894461 A US3894461 A US 3894461A US 437395 A US437395 A US 437395A US 43739574 A US43739574 A US 43739574A US 3894461 A US3894461 A US 3894461A
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US
United States
Prior art keywords
hubs
knives
hub
springs
spring
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
US437395A
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English (en)
Inventor
Hans Jakob
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.)
Maschinenfabrik Goebel GmbH
Original Assignee
Maschinenfabrik Goebel GmbH
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Filing date
Publication date
Application filed by Maschinenfabrik Goebel GmbH filed Critical Maschinenfabrik Goebel GmbH
Application granted granted Critical
Publication of US3894461A publication Critical patent/US3894461A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B26D7/2621—Means for mounting the cutting member for circular cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/002—Materials or surface treatments therefor, e.g. composite materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7747—With means to permit replacement of tool
    • 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
    • Y10T83/9372—Rotatable type
    • Y10T83/9377—Mounting of tool about rod-type shaft
    • 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
    • Y10T83/9457—Joint or connection
    • Y10T83/9461—Resiliently biased connection
    • 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
    • Y10T83/9457—Joint or connection
    • Y10T83/9464—For rotary tool
    • Y10T83/9466—Flexible sleevelike tool

Definitions

  • This invention relates to an apparatus for the longitudinal cutting of narrow strips of web material such as paper, foil, and the like, by means of several circular knives, wherein each such knife is mounted on a hub or driving collar and is capable of being pressed against a portion thereof by means of a spring.
  • Each knife and its spring are mounted together on an individual hub, and each spring is made to bear against a knife on an adjacent hub.
  • the web in most instances passes between two shafts, one of which having circular knives mounted thereon, and the other shaft having grooves or counterknives thereon for accommodating such knives.
  • One shaft normally drives the other, or the shafts are rotated as the moving web passes therebetween.
  • the knives and their grooves or counterknives must be adjusted correspondingly. This can be achieved for example by inserting or removing washers between the knives or the hubs carrying the knives; these washers often having a thickness of only a few fractions of a millimeter. In order to remove these washers, or in order to be able to insert them, it is necessary to relax the clamping by which the knives or the hubs holding said knives are held on their shaft.
  • the knives must be relatively adjustable by small distances which requires that the hubs carrying the knives be made as narrow as possible.
  • an apparatus for longitudinally cutting the narrowest strips possible.
  • a readjustment for one strip width to another is capable of being achieved as simply as possible while at the same time assuring the necessary spring bias of each circular knife against its hub or against its respective counter knife.
  • each spring is connected with its respective hub and is movable relative to its hub in both a radial as well as an axial direction by only an insignificant amount.
  • the present apparatus includes an annular groove provided in each hub for the reception of each flat annular spring, the diameter of each groove being slightly larger than the inner diameter of each spring. Also, a lateral wall of each annular groove is inclined toward the longitudinal axis of the shaft supporting the hub by an angle less than Moreover, each spring is resilient and is capable of flexing in an annular direction, radial legs comprising the spring being so interconnected as to permit such flexing.
  • each spring is more positively seated on its respective hub even if the hub spacing is changed by means of washers and the like during the operation of the apparatus.
  • the springs cannot be wedged in between the hubs, and the time consuming and troublesome alignment of the springs is completely avoided.
  • the readjustment from one width to another of the-strips to be cut is therefore easily and quickly facilitated.
  • the setting periods for the apparatus are decreased by a considerable amount, so that the effective running time of the machine is accordingly increased.
  • readjustment can be accomplished in a very simple manner by a single operator.
  • FIG. 1 is a longitudinal sectional view taken through the apparatus according to the invention
  • FIG. 2 is a top view of one of the springs used in the invention and at a reduced scale relative to FIG. 1;
  • FIG. 3 is a view similar to FIG. 2 showing the spring legs expanded when mounted in place.
  • the counter grooves or knives for each of the circusince they provided bearings at opposite ends thereoof in a machine frame.
  • One of these bearings' can be removably mounted to facilitate mounting of the circular knives and their hubs on to the shaft. This may be necessary, for example, to facilitate the sliding of a number of circular knives or hubs carrying such circularknives on to shaft 1 in an axial direction.
  • An annular flange 2 is mounted on shaft 1 in the vicinity of one of the two bearings thereon. Near the other of such bearings, shaft 1 is provided with a thread 3 and a nut 4 engaged therewith.
  • a plurality of aligned annular hubs 6 are provided along the shaft on a section 5 having a larger diamter than the threaded shaft diameter. Hubs 6, 6a, 6b, 6c and 6d are shown in FIG. 1, although fewer than or more than five of such hubs may be provided without departing from the invention.
  • the hubs are keyed on the shaft for rotation therewith and are mounted on section 5 against flange 2 by means of a bushing 7.
  • bushing 7 is designed to accommodate the number of hubs with or without spacers required for a specific operation.
  • An annular groove 8 is provided in each of the hubs, one lateral wall 9 of which is inclined at an angle to the longitudinal axis 10 of shaft 1, which angle is less than 90.
  • Spring 11 is in the form of an annular flat plate having a plurality of adjacent inner sections 12 interconnecting adjacent pairs of radially extending legs 12a and 12b. The inner ends of these legs are interconnected to sections 12 along an inner circle 120 which corresponds approximately to that of the inner diameter of annular groove 8.
  • Adjacent outer sections 13 interconnect adjacent pairs of legs 12a and 12b at their outer ends.
  • An annular ring 14 is formed on each hub, each ring defining the opposite wall of each annular groove 8. Accordingly, spring 11 may be forced over the edge of ring 14 of each hub. During such assembly, sections 12 bend somewhat and then snap into annular groove 8.
  • Each hub 6 is also provided with an annular seat 15 on which a respective circular knife 16 is supported. Because of the flexure of spring 11, it will be assured that circular knife 16 is pressed against a shoulder 17 located on each hub. This pressure against knife 16 is also transmitted to its corresponding counter knife with which knife 16 cooperates.
  • annular seat 15 for circular knife 16 is disposed on one side of each hub 6, while annular groove 8 is located for the accommodation of spring 11 on the other side of each hub. Furthermore, one lateral wall 9 of annular groove 8 is disposed obliquely in relation to the longitudinal axis 10 of knife shaft 1 and thus of the longitudinal axisof each hub, and is thus inclined in relation to the latter by an angle which is less than 90. Annular groove 8 is of such a width that spring 11 is allowed a certain freedom of axial movement. Since the inner diameter of spring 11 is less than the diameter of groove 8, tension develops in each spring 11, as a result of which circular knife 16 associated with a spring 11 of an adjacent hub is pressed against shoulder 17 or against the counter knife associated with circular knife 16. Each spring 11 flexes in the manner shown in FIG. 3 when inserted within grooves 8.
  • each spring 11 is disposed in such a way that it is associated with that circular knife 16 which is located adjacent the spring on each adjoining hub, dimensions will result which permit flexure and tension of each spring, and wherein the thickness 18 of each hub can be maintained as small as possible. In such manner, it is also possible to maintain distances 19, as between adjacent blades 16, as small as possible. Also, since lateral wall 9 of each annular groove 8 slopes at an angle to axis 10, a certain freedom of movement is provided for each spring 11. As a result, it becomes possible to dispose annular groove 8 in each hub in such a way that it will be covered up at least partially or even completely by annular seat 15 for circular knife 16. It is possible, for example, that edge 20 of the shoulder 17 located to the right in FIG.
  • each hub 6 can be exploited as much as possible, in that thickness 18 of each hub 6 can be made as small as possible, and each hub 6 can be maintained so rigid that circular knife 16 is guided and is precisely seated.
  • hub 6a lying adjacent flange 2 need not be provided with an annular groove 8 since no spring 11 need be seated thereon.
  • hub 6 lying adjacent bushing 7 need not be provided with an annular seat 15 since no knife 16 is supported by this hub.
  • any number of hubs may be disposed along shaft 1 adjacent one another without departing from the scope of the present invention. Of course, the length of section 5 would need to be accordingly altered.
  • Apparatus for the longitudinal slitting of narrow strips of web material such as paper, foil and the like comprising a rotatable shaft, a plurality of annular adjacent hubs mounted along said shaft for rotation therewith, circular knivesand flat annular flexible springs seated on each of said hubs, radially extending shoulder projections on said hubs, said knives lying against one side wall of said projections of said respective hubs, annular outwardly opening grooves on said hubs being located on opposite sides of saidprojections for the re- I 'ception of said springs, a wall of each said groove defining an opposite side wall of each said projection, each said-opposite side wall sloping slightly toward the longitudinal axis of said shaftin a direction toward said 6 against said knives on said adjacent ones of said hubs by reason of said sloping opposite side walls to thereby maintain said knives flatly against said one side wall of each said projection.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Crushing And Pulverization Processes (AREA)
US437395A 1973-01-27 1974-01-28 Apparatus for the longitudinal cutting of narrow strips Expired - Lifetime US3894461A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2304092A DE2304092A1 (de) 1973-01-27 1973-01-27 Einrichtung zum laengsschneiden schmaler streifen

Publications (1)

Publication Number Publication Date
US3894461A true US3894461A (en) 1975-07-15

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ID=5870171

Family Applications (1)

Application Number Title Priority Date Filing Date
US437395A Expired - Lifetime US3894461A (en) 1973-01-27 1974-01-28 Apparatus for the longitudinal cutting of narrow strips

Country Status (10)

Country Link
US (1) US3894461A (de)
JP (1) JPS49109985A (de)
BE (1) BE810144A (de)
CH (1) CH566849A5 (de)
DE (1) DE2304092A1 (de)
ES (1) ES421920A1 (de)
FR (1) FR2215296B1 (de)
GB (1) GB1461344A (de)
IT (1) IT1007102B (de)
NL (1) NL7401027A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701324A (en) * 1970-06-10 1972-10-31 Harold C Pierce Boxed product carloading
US3779173A (en) * 1970-06-10 1973-12-18 H Pierce Boxed produce carloading
US4280386A (en) * 1979-12-26 1981-07-28 The Ward Machinery Company Paperboard slitting apparatus
US4331056A (en) * 1979-05-22 1982-05-25 Jagenberg Werke Ag Rotary disk-cutter blade
US4890945A (en) * 1987-02-12 1990-01-02 Allied Gear & Machine Company Rotary die cylinder bearer attachment
US5085110A (en) * 1987-01-22 1992-02-04 Agfa-Gevaert Aktiengesellschaft Cutting device for the longitudinal cutting of foil lengths
US20050172777A1 (en) * 2002-05-28 2005-08-11 Harry Olander Blade for use in slitting a paper or board web
CN104227761A (zh) * 2014-07-25 2014-12-24 四川美可迪科技开发有限责任公司 一种塑料瓶切口机
US20160297093A1 (en) * 2013-12-02 2016-10-13 Rosjoh Pty Ltd Method, system and device for changing of cutting tools
US20220168916A1 (en) * 2019-03-31 2022-06-02 Dexerials Corporation Upper blade roller, slitting device, slitting method, and laminated tape

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5167590A (ja) * 1974-12-10 1976-06-11 Yoshio Nishinomya Suritsutaa
JPS5520410Y2 (de) * 1975-10-17 1980-05-16
JPS6021124Y2 (ja) * 1976-10-23 1985-06-24 三菱マテリアル株式会社 丸刃工具
AT383403B (de) * 1983-10-31 1987-07-10 Enfo Grundlagen Forschungs Ag Federscheibe, verfahren zur herstellung derselben und vorrichtung zu dessen durchfuehrung
DE3642005C1 (de) * 1986-12-09 1988-03-03 Ibsm Mehltretter Gmbh Vorrichtung zum Schneiden von folienartigen Werkstoffen
CN103586929A (zh) * 2013-10-28 2014-02-19 无锡泰极纸业有限公司 一种精切机的刀轴结构
CN104029238A (zh) * 2014-05-22 2014-09-10 成都海凌达机械有限公司 砂带切割结构
CN110882794A (zh) * 2019-12-02 2020-03-17 湖州菠萝蜜服饰有限公司 一种多重碎布机的切割装置
CN112473902B (zh) * 2020-11-16 2022-02-08 江山华隆能源开发有限公司 一种生物质粒防结块的制粒装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1673336A (en) * 1927-05-09 1928-06-12 Oscar E Lehmicke Machine for shredding materials
US3805661A (en) * 1971-02-12 1974-04-23 Ahlstroem Oy Mechanism for fastening and prestressing of circle saw blade

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1673336A (en) * 1927-05-09 1928-06-12 Oscar E Lehmicke Machine for shredding materials
US3805661A (en) * 1971-02-12 1974-04-23 Ahlstroem Oy Mechanism for fastening and prestressing of circle saw blade

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701324A (en) * 1970-06-10 1972-10-31 Harold C Pierce Boxed product carloading
US3779173A (en) * 1970-06-10 1973-12-18 H Pierce Boxed produce carloading
US4331056A (en) * 1979-05-22 1982-05-25 Jagenberg Werke Ag Rotary disk-cutter blade
US4280386A (en) * 1979-12-26 1981-07-28 The Ward Machinery Company Paperboard slitting apparatus
US5085110A (en) * 1987-01-22 1992-02-04 Agfa-Gevaert Aktiengesellschaft Cutting device for the longitudinal cutting of foil lengths
US4890945A (en) * 1987-02-12 1990-01-02 Allied Gear & Machine Company Rotary die cylinder bearer attachment
US20050172777A1 (en) * 2002-05-28 2005-08-11 Harry Olander Blade for use in slitting a paper or board web
US20160297093A1 (en) * 2013-12-02 2016-10-13 Rosjoh Pty Ltd Method, system and device for changing of cutting tools
US10532482B2 (en) * 2013-12-02 2020-01-14 Rosjoh Pty Ltd Method, system and device for changing of cutting tools
CN104227761A (zh) * 2014-07-25 2014-12-24 四川美可迪科技开发有限责任公司 一种塑料瓶切口机
US20220168916A1 (en) * 2019-03-31 2022-06-02 Dexerials Corporation Upper blade roller, slitting device, slitting method, and laminated tape

Also Published As

Publication number Publication date
NL7401027A (de) 1974-07-30
DE2304092A1 (de) 1974-08-01
ES421920A1 (es) 1976-05-01
GB1461344A (en) 1977-01-13
IT1007102B (it) 1976-10-30
CH566849A5 (de) 1975-09-30
JPS49109985A (de) 1974-10-19
FR2215296B1 (de) 1977-09-23
BE810144A (fr) 1974-05-16
FR2215296A1 (de) 1974-08-23

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