US2918971A - Apparatus for the automatic control of working operations at moving platelike, sheet-like, or band-like electrically non-conductive material - Google Patents

Apparatus for the automatic control of working operations at moving platelike, sheet-like, or band-like electrically non-conductive material Download PDF

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Publication number
US2918971A
US2918971A US45715054A US2918971A US 2918971 A US2918971 A US 2918971A US 45715054 A US45715054 A US 45715054A US 2918971 A US2918971 A US 2918971A
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United States
Prior art keywords
band
contact
veneer
clipper
moving
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Expired - Lifetime
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English (en)
Inventor
Bertram Karl
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/08—Severing sheets or segments from veneer strips; Shearing devices therefor; Making veneer blanks, e.g. trimming to size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/006—Accessories for shearing machines or shearing devices for obtaining pieces of a predetermined length, e.g. control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
    • B23D36/0008—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices
    • B23D36/0033—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length
    • B23D36/0041—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length the tool moving continuously
    • 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
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2094—Means to move product at speed different from work speed
    • 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
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4458—Work-sensing means to control work-moving or work-stopping 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
    • Y10T83/485—Cutter with timed stroke relative to moving work
    • Y10T83/492—With means to vary timing of tool feed
    • 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
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/531—With plural work-sensing 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
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/536—Movement of work controlled
    • 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
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/541—Actuation of tool controlled in response to work-sensing means
    • Y10T83/544—With trip-switch in work-sensing mechanism

Definitions

  • the present invention relates to a method for the automatic control of working operations on moving platelike, sheet-like, or band-like material, such as rotary cut veneer sheets or bands, veneer plates, molded fiber board or the like.
  • the automatic control of the working operations may consist in any kind of action affecting the moving platelike, sheet-like, or band-like material, for example the switching on or off of conveying means, or the switching on or off of cutting means or of other mechanically working tools.
  • the problem to be solved by the invention is to dis close a controlling method in which the working materials are not employed for the mechanical release of the contact and in which contact is effected at the driving means to be controlled without loss of time.
  • the working materials in question for example veneer sheets, molded fiber board etc. are electrically non-conductive.
  • the invention resides fundamentally in the discovery that the electrically non-conductive materials, such as veneer, molded fiber board, etc., contains at the time when they are worked, a certain percentage of moisture which renders it possible to impose upon these materials an electric potential by means of which the material changes, through mere contact, the grid potential of a thermionic tube.
  • the alteration of the anode current thus produced can then be used for the control of sub sequently connected organs, such as relays, magnets or electronic switching means (thyratron, ignitron or the like), for switching a driving element on or ofi when the working material contacts a contact feeler, or for switching the driving element on again when the contact is broken.
  • the working material is connected via the machine frame with a potential opposite to that of the grid of the thermionic tube, while the grid itself is connected with a contact feeler rigidly or movably arranged at the machine frame in the path of the working material, with insulating material interposed between the contact feeler and the machine frame.
  • the working material need not act as. a mechanical switching means.
  • stableand wear-resisting contact feelers can be used, and the electronic relay can be so devised that contact is elfected practically without loss of time and efiective power.
  • Fig. l is a diagrammatic side elevation of the veneer clipper
  • Fig. 2 is a partial top view of the conveying belts on which the material is conveyed to the clipping knives.
  • the endless conveying means 1 for example rubber belts convey the veneer sheet or band B, running off the reel 6 supported on the frame 7, to a veneer clipper 2, from which the separated veneer pieces or plates B are carried off by sorting belts 3.
  • the conveying belts 1 are driven from the motor 4, the speed of which is adapted for regulation (for example infinitely variable regulation) by means of a regulating member 4a known per se provided with a manually actuatable control lever 5.
  • the veneer band B is thus fed to the clipping knife 2 at a conveying speed at which it is possible for the operator to cut it, whereby the conveying speed constantly changes, as more o-rless frequently, faulty portions have to be cut out, and as for that reason the material frequently has to be cut up in pieces of constantly varying sizes depending upon the quality of the woo-d.
  • the veneer band B has to be fed to the clipping knife 2 in such a manner that the latter is capable of handling it.
  • the veneer band B is reeled up as shown at 6 and supported on the frame 7 above the conveying belts 1.
  • the shaft 8 of the reel 6 is driven from a motor 9 at uniform speed.
  • a stationary feeler member 10 Fastened on a supporting arm 20 of the frame 7 in the area of the conveying belts 1 and between the latter is a stationary feeler member 10, with an insulating plate 21 between feeler 10 and the supporting arm 20.
  • the feeler 10 is connected with the grid potential 12 of the thermionic tube of an electron relay 11.
  • the veneer band B is connected via the frame 7 with an opposite potential 13.
  • the electron relay 11 regulates the driving motor 9 of the reel 6 either for unreeling or for brake action.
  • the veneer band B touches the contact feeler 10, whereupon the change of potential thus produced regulates the unreeling motor 9 via the electron relay 11 for brake action.
  • the conveying belts 1 again start to feed the veneer band B toward the clipping knife 2, the veneer band moves away from the contact feeler into the dot-and-dash line position. In this way it is possible to unreel through fully automatically Working control means always just so much veneer band from the reel 6 as can be handled by the clipper 2.
  • a switch gear for the automatic control of operations in cutting tools which comprises a conveyor made of insulating material for moving moist material to be cut to and past said cutting tool, means for driving said conveyor at various speeds, means for driving said material at uniform speed to said conveyor, means for imparting reciprocating movement to said cutting tool at right angles to said material, a first control circuit for connecting and disconnecting the drive means for the material a second control circuit for connecting and disconnecting the drive means for the cutting tool, each of said control circuits comprising a triode, sources of current for heating the filaments, the grids, and the plate electrode of said triodes, material-engaging contacts in the path of said conveyor arranged in the grid circuit of described for the stationary contact feeler 10 between the conveying belts 1) in the path of the veneer a movable contact feeler 10' on a supporting arm 23 of the clipper support 7, an insulating plate 22 is being interposed between the contact feeler 10' and arm '23.
  • the contact feeler 10 is tiltable and normally maintained in upright position by the balance weight 23.
  • the tiltable contact feeler 10' is connected with the grid circuit 12' of the electronic relay l1, regulating the driving motor 9' of the clipper 2, while the veneer plates B are connected via the clipper support 7' and the clipping knife 2 with the tap 13 of the battery 40 of the electronic relay 11'.
  • the tiltable contact feeler 10 When the tiltable contact feeler 10 is in the upright position illustrated in the drawings, it connects the motor 9' of the clipper 2 via the electronic relay 11 for stop. When, thereupon, the tiltable contact 16* is tilted by the end of the veneer band B moved through the machine by the conveying belts 1, it connects the motor 9 of the clipper 2 for action.
  • said triodes relays in the plate circuit of each of the triodes and connections between the material and the current sources by way of the machine frame, said relay in said first control circuit becoming operative when the material engages its associated contact said relay in said second control circuit becoming operative when the material simultaneously engages its associated contact and the machine frame, whereby the grid potential is changed, and contact means in the main electric line supplying the means for driving the material conveyor and the cutting tool, respectively, which last mentioned contact means are opened and closed by said relays.
  • a switch gear for the automatic control of operations in a veneer clipper which comprises a conveyor made of insulating material for moving moist veneer bands to be cut to and past said clipper, means for driving said conveyor at various speeds, a reel for mounting said veneerband as a coil, a motor for driving said coil at uniform speed to said conveyor, said coil being arranged at a distance from the conveyor, whereby veneer band uncoiled therefrom forms a slack therebetween, means for imparting reciprocating movement to said clipper at right angles to said band, a first control circuit for connecting and disconnecting the motor for driving the band, a second control circuit for connecting and disconnecting the drive means for the clipper, each of said control circuits comprising a triode, sources of current for heating the filaments, the grids, and the plate electrode of said triodes, veneer-band-engaging contacts in the path of said conveyor arranged in the grid circuit of said triodes, relays in the plate circuit of each of the triodes and connections between the veneer band and the current sources by way of the machine frame, said relay
  • a switch gear according to claim 2 wherein the veneer band-engaging contact is arranged below said slack of the veneer band in such a manner that no contact will be made between said contact feelers and the veneer band, when the latter is uncoiled at the same speed as the conveyor feeds it to the clipper, whereas contact between the contact feelers and the veneer band is made, and the reel-driving motor connected thereby, when the conveyor is driven at lower speed or comes to a stand still.
  • a switch gear for automatic control in which said conveyor is made of insulating material in the form of an endless rubber band arranged after the clipper in said machine, means for driving said conveyor, said contacts arranged in the path of the con- 7 veyor at a desired distance from said clipper, said contacts being tiltable and so arranged as to be tilted by the traveling veneer into a position that will not obstruct the further travel of the same, said contacts being connected to said electronic relay, said relay actuating said contact means in the main electric line for operating the motor 5 when the veneer contacts the contacts, and for shutting off the motor when the material disengages from the contacts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
US45715054 1953-09-21 1954-09-20 Apparatus for the automatic control of working operations at moving platelike, sheet-like, or band-like electrically non-conductive material Expired - Lifetime US2918971A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE322730X 1953-09-21
DEM26503A DE1040113B (de) 1953-09-21 1955-03-18 Steuerung fuer elektromotorische bzw. elektrisch geschaltete Antriebe von Arbeitsmaschinen zur Verarbeitung von schlecht leitenden Werkstoffen, insbesondere Furnierscheren

Publications (1)

Publication Number Publication Date
US2918971A true US2918971A (en) 1959-12-29

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US45715054 Expired - Lifetime US2918971A (en) 1953-09-21 1954-09-20 Apparatus for the automatic control of working operations at moving platelike, sheet-like, or band-like electrically non-conductive material
US57130856 Expired - Lifetime US3011375A (en) 1953-09-21 1956-03-13 Apparatus for the automatic control of machinery

Family Applications After (1)

Application Number Title Priority Date Filing Date
US57130856 Expired - Lifetime US3011375A (en) 1953-09-21 1956-03-13 Apparatus for the automatic control of machinery

Country Status (5)

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US (2) US2918971A (de)
CH (2) CH322730A (de)
DE (1) DE1040113B (de)
FR (2) FR1111268A (de)
GB (2) GB767228A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213726A (en) * 1960-09-30 1965-10-26 American Mach & Foundry Wrapper feeding and registering mechanism
US3453915A (en) * 1966-12-29 1969-07-08 Sturtevant Ind Inc Material dispenser
CN102513594A (zh) * 2011-12-31 2012-06-27 中冶赛迪工程技术股份有限公司 带钢飞剪横切装置

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126848A (en) * 1964-03-31 Apparatus for making pillow slips
FR79512E (de) * 1960-03-01 1963-03-29
DE1197213B (de) * 1960-10-25 1965-07-22 Carl Heinz Mueller Einrichtung zum Steuern einer Furnierschere
US3233484A (en) * 1961-08-15 1966-02-08 Armour & Co Severing apparatus
US3477327A (en) * 1967-04-13 1969-11-11 Tadashi Aizawa Automatic veneer cutting apparatus
US3800647A (en) * 1972-12-18 1974-04-02 Kemlite Corp Machine for trimming the edges of panels
US4530132A (en) * 1982-03-11 1985-07-23 Hollymatic Corporation Meat loaf forming apparatus
US4442741A (en) * 1982-09-07 1984-04-17 Whittingham Thomas D Meat log cutter
US4594925A (en) * 1984-11-14 1986-06-17 Yoshida Kogyo K. K. Apparatus for cutting a slide fastener chain
FR2581029B1 (fr) * 1985-04-24 1987-05-29 Smh Alcatel Distributeur d'etiquettes et machine a affranchir equipee de ce distributeur
CN108044740B (zh) * 2017-12-27 2020-11-10 日照现代家具有限公司 链板式自动削片竹板加工装置
CN110860729B (zh) * 2019-11-20 2020-12-08 阳信东泰精密金属有限公司 一种自动化机床及设计方法

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Publication number Priority date Publication date Assignee Title
US460695A (en) * 1891-10-06 Le roy s
US918813A (en) * 1908-05-26 1909-04-20 Harry Yarrington Armstrong Wrapper-cutting mechanism.
US2003077A (en) * 1928-09-14 1935-05-28 Long Bell Lumber Company Material testing apparatus
US2566848A (en) * 1947-09-23 1951-09-04 Bell Telephone Labor Inc Wire winding and tensioning device

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US482917A (en) * 1892-09-20 Machine foe cutting lath tarns
US805724A (en) * 1904-12-30 1905-11-28 Charles R Barrett Wire-cutting mechanism.
US947360A (en) * 1905-05-06 1910-01-25 Mossberg Wrench Company Press.
US1090388A (en) * 1913-04-15 1914-03-17 Nat Binding Machine Company Automatic labeling-machine.
US1435979A (en) * 1920-01-28 1922-11-21 Cutler Hammer Mfg Co Electrical controller
US1942069A (en) * 1930-05-03 1934-01-02 Gen Electric Apparatus for cutting wire into lengths
US1883047A (en) * 1931-09-14 1932-10-18 Thompson Prod Inc Material sorting machine
FR804638A (fr) * 1936-04-07 1936-10-28 Pigral Procédé et machine pour la fabrication de fiches, cartes et objets analogues de dimensions rigoureusement constantes
US2258808A (en) * 1940-07-24 1941-10-14 Nashua Gummed & Coated Paper Production of articles with viscous coatings
US2379682A (en) * 1944-03-04 1945-07-03 Colucci Giovanni Machine for cutting veneer
US2666484A (en) * 1948-06-15 1954-01-19 Plywood Res Foundation Sheet clipping and classifying apparatus
US2689610A (en) * 1951-02-13 1954-09-21 Gen Tire & Rubber Co Machine for measuring and cutting rubber strip stock

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US460695A (en) * 1891-10-06 Le roy s
US918813A (en) * 1908-05-26 1909-04-20 Harry Yarrington Armstrong Wrapper-cutting mechanism.
US2003077A (en) * 1928-09-14 1935-05-28 Long Bell Lumber Company Material testing apparatus
US2566848A (en) * 1947-09-23 1951-09-04 Bell Telephone Labor Inc Wire winding and tensioning device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3213726A (en) * 1960-09-30 1965-10-26 American Mach & Foundry Wrapper feeding and registering mechanism
US3453915A (en) * 1966-12-29 1969-07-08 Sturtevant Ind Inc Material dispenser
CN102513594A (zh) * 2011-12-31 2012-06-27 中冶赛迪工程技术股份有限公司 带钢飞剪横切装置
CN102513594B (zh) * 2011-12-31 2013-05-15 中冶赛迪工程技术股份有限公司 带钢飞剪横切装置
WO2013097576A1 (zh) * 2011-12-31 2013-07-04 中冶赛迪工程技术股份有限公司 带钢飞剪横切装置

Also Published As

Publication number Publication date
US3011375A (en) 1961-12-05
GB799612A (en) 1958-08-13
CH322730A (de) 1957-06-30
FR69909E (fr) 1959-01-09
CH346275A (de) 1960-05-15
FR1111268A (fr) 1956-02-24
GB767228A (en) 1957-01-30
DE1040113B (de) 1958-10-02

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