US2623587A - Veneer clipper - Google Patents

Veneer clipper Download PDF

Info

Publication number
US2623587A
US2623587A US69324146A US2623587A US 2623587 A US2623587 A US 2623587A US 69324146 A US69324146 A US 69324146A US 2623587 A US2623587 A US 2623587A
Authority
US
United States
Prior art keywords
veneer
clipper
conveyor
pieces
switch
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
Other languages
English (en)
Inventor
David E Hervey
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.)
HERVEY FOUNDATION Inc
Original Assignee
HERVEY FOUNDATION Inc
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 HERVEY FOUNDATION Inc filed Critical HERVEY FOUNDATION Inc
Priority to US69324146 priority Critical patent/US2623587A/en
Application granted granted Critical
Publication of US2623587A publication Critical patent/US2623587A/en
Anticipated expiration legal-status Critical
Priority claimed from FI711772A external-priority patent/FI45836C/fi
Priority to FR7222590A priority patent/FR2143302B1/fr
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • Y10T83/2022—Initiated by means responsive to product or work
    • Y10T83/2024—Responsive to work
    • 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
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4653—With means to initiate intermittent tool action
    • Y10T83/4685—With means to vary frequency of initiation
    • Y10T83/4688—By orbitally traveling trigger pin[s]
    • 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
    • Y10T83/527—With means to control work-responsive signal system
    • Y10T83/53—To change length of product
    • 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
    • Y10T83/533—With photo-electric 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
    • Y10T83/541—Actuation of tool controlled in response to 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
    • Y10T83/626—Operation of member controlled by means responsive to position of element remote from member [e.g., interlock]
    • Y10T83/637—With means to initiate operation of member
    • 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
    • Y10T83/828—With illuminating or viewing means for work
    • 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
    • Y10T83/849—With signal, scale, or indicator
    • Y10T83/853—Indicates tool position
    • Y10T83/855—Relative to another element
    • Y10T83/856—To work-engaging member
    • Y10T83/857—Calibrated scale or indicator
    • Y10T83/858—Indicates dimension of work being cut

Definitions

  • This invention relates to improvements in wood veneer manufacturing and particularly to an improved method and improved apparatus for dividing large sheets of wood veneer into veneer pieces in accordance with the various grades of veneer wood contained in the veneer sheets as they are removed from the logs, and for stacking the pieces and conveying them away from the veneer cutting equipment.
  • a sheet of veneer as removed from the log usually contains defects such as cracks, knot holes and decay which were present in the log from which the sheet was cut and these defects recur at substantially constant intervals in the veneer sheet as determined by the length of veneer sheet removed during one revolution of the log.
  • intervals are not completely uniform, however, as they will become shorter as the diameter of the log is reduced;
  • the defective material in a veneer sheet must be cut away in such a manner that a minimum amount of clear material is included in the pieces containing the defective material.
  • the pieces of veneer sheets so produced may be comparatively long or, particularly where the Wood contains numerous defects the attendant may tear the sheet across at each revolution of the lathe producing a number of comparatively short pieces of veneer.
  • the long pieces are produced, they may be transported in this condition to a veneer clipper by means of which they are cut into pieces of desired lengths and the portions containing imperfections are cut out and discarded. It is the more common practice, however, to tear the sheet into the short pieces and stack these pieces one on top of the other to form a book.
  • a further object resides in the provision of improved veneer manufacturing method and apparatus wherein the severed pieces of veneer are automatically stacked into stacks containing predetermined amounts of veneer and the stacks are automatically conveyed to predetermined points of discharge, such as locations adjacent to drying kilns.
  • a still further object resides in the provision of an automatic veneer clipper of simple and durable construction capable of high speed operation under automatic control and which does not interfere with the movement of veneer along the conveyor leading to the clipper and through the clipper.
  • Another object resides in the provision of an aligning means extending across the veneer carrying conveyor providing lines parallel to the clipper knife to assist the operator in properly laying off the veneer sheet into pieces of sound material of maximum area and in providing a method of measuring the veneer sheet and separating it into units of uniform arrangement of predetermined amount.
  • Yetanother object resides in the provision for reclipping the pieces of Veneer which result from the foregoing operations wherein they are severed either longitudinally with or perpendicularly to the direction of the grain either before or after the pieces are dried.
  • Fig. l is a plan view of veneer manufacturing apparatus illustrative of the invention.
  • FIG. 2 an elevational view of a fragmentary portion of the apparatus illustrated in Fig. 1;
  • Fig. 3 a detailed isometric view of a projector 4- for projecting a moving pattern of grid lines onto the veneer on the conveyor and suitable supports for the projector;
  • Fig. 4 a detailed isometric view of a set of fixed parallel lines extending across the conveyor and means for supporting them;
  • Fig. 5 a detailed isometric view of an electromagnetic pick up and clipper actuating switch
  • FIG. 6 an isometric View on an enlarged scale of the switch means illustrated in Fig. 5;
  • Fig. 7 a plan View of a piece of veneer wood strip showing the manner of locating marking bars thereon so that imperfections in the sheet will be removed by the clipper;
  • FIG. 8 an elevational view of the veneer clipper showing a switch for automatically operating the clipper to cut the veneer into pieces of predetermined size;
  • Fig. 9 a view similar to Fig. 8 showing the clipper mechanism in a different operative posi-- tion
  • FIG. 10 an elevational view of a modification of the clipper and adjacent portion of the conveyor showing a photoelectric device for operating the clipper in accordance with marks placed on the surface of the wood veneer;
  • Fig. 11 a plan view of a piece of wood veneer showing the manner of marking the veneer for removal of imperfections by the veneer clipper;
  • FIG. 12 an elevational view of another modification of a veneer measuring and clipper actue ating device for measuring the wood veneer ahead of the clipper and automatically actuating the clipper to out the Wood into pieces of predetermined size.
  • the conveyor 2 is operatively positioned between a veneer cutting lathe 3 and a veneer clipper 4.
  • the lathe 3 may be of the form shown in my copending application Serial No. 691,919, filed August 21, 1946 for Wood Manufacturing, and the conveyor may be a conventional chain conveyor having three or more endless chains 5 carried on sprockets mounted on end shafts as indicated at 6 and driven at a substantially constant speed by power means, such as an electric motor, not illustrated.
  • the chains may be supported between the end shafts by suitable idler sprockets or rollers in a manner well known to the art.
  • the veneer As the veneer is cut from the log in the lathe 3 it falls upon the conveyor 2 and is carried along the conveyor in the form of a strip to the clipper 4.
  • the length of the conveyor between the lathe and the clipper is made sufiicient to provide an inspection station for the veneer strip so that an attendant may carefully inspect the veneer while it is on the conveyor, have suflicient time to properly estimate the various grades of veneer in the strip and lay the strip off into suitable pieces according to the various grades present.
  • suitable illumination is provided in the form of lamps as indicated at l and-8, carried by suitable respective supports 9 and I0 at a proper height above the veneer tto provide the most desirable illumination. Between the lamps 1 and 8 a projector unit I!
  • the drive connection l3 may be of a flexible drive cable for example, such as a tachometer drive shaft of conventional construction.
  • the lines of light projected from the unit ll onto the travelling sheet of veneer may be made to move with the sheet at synchronous speed, thus giving the attendant adequate opportunity to make the desired marks.
  • the projector and supporting means therefor is illustrated in somewhat greater detail in Fig. 3 and may include a moving screen or other equivalent means to project moving lines of light.
  • Suitable fixed transverse lines M are provided across the conveyor adjacent to the clipper 4, a suitable construction for these lines being illustrated in Fig. 4.
  • the support it for the lamp 8 has two portions I5 and 15 disposed one at each side of the conveyor 2 and each comprising two spaced apart legs or standards.
  • Respective guide members ill and I8 are carried by the support portions l5 and it at opposite sides of the conveyor slightly above the top surface of a strip of conveyor supported veneer and substantially parallel to the veneer strip.
  • Respective slide blocks it and 23 are slidably mounted on the guide members ll and I8 and may be secured in adjusted position thereon by suitable means such as set screws as indicated at 2
  • a plurality of parallel wires 22 are secured at their ends to the blocks l9 and 2E) and stretched between the blocks and are positioned below the lamp 8 in such a manner that the lamp will cast definite shadows of the wires onto the surface of the veneer to provide the guide lines It.
  • these fixed guide lines the operator or inspector can check the positioning of the severing indications he has placed on the veneer and may also use these fixed guide lines for manual control of the clipper if that form of operation should be desirable. For example, if itwere desired to use the clipper to trim the ends of pieces already severed from the veneer strip, the pieces could be clipped to desired uniform length by using these fixed guide lines as a measuring scale to determine the distance from the end of the piece to the clipper.
  • suitable bars of magnetic material such as steel, of relatively small cross section are secured together in pairs of parallel bars by suitable flexible connectors or straps.
  • the bars of one such pair are indicated at it and 2t and the flexible connectors at 25 and 26.
  • the pairs of bars may be provided in sets in which the various sets have different length connectors so that the bars will be spaced at various predetermined distances apart.
  • Such pairs of bars may be laid on the edge of the veneer at uniform intervals to produce veneer pieces of uniform desired size or may be used to indicate relatively narrow portions of defective material which are to be removed from the veneer.
  • a device, generally indicated at 21, for removin the bars from the veneer is located immediately above the conveyor and in front of the clipper 4.
  • This device may include a pair of spaced parallel rollers 28 and 29 surrounded by a continuous flexible belt 30 of fabric or some other suitable material.
  • the roller 28 is driven at a speed such that the belt 30 moves at substantially the same speed as the conveyor chains 5 and may be driven from the conveyor chain drive or by a friction band 30a in contact with the surface of the veneer.
  • the roller 29 contains a series of electromagnets having sufiicient force to pick the bars of electromagnetic material up from the surface of the veneer and carry them around the roller and onto the upper surface of the belt 36 from which they are deposited into a receptacle 3 I.
  • a switch device comprising a plurality of rollers 33 of electric conductive material supported on a tubular shaft as and insulated therefrom. At one end the shaft carries a pair of slip rings 35 and 3G and wire leads 3? and 38 connect alternate rollers 33 to the respective slip rings.
  • the brushes are electrically connected by wires 39a and 40a to a relay mechanism it which is in turn electrically connected, in any suitable manner, by wires Ma and Mb with the clipper so that the clipper is actuated to sever the veneer whenever one of the bars contacts a pair of therollers 33.
  • single bars may be used instead of the connected pair of bars shown in Fig. 5.
  • the single bars are laid along one edge of the sheet of veneer in position to mark the locations at which the veneer is to be severed by the clipper to remove portions containing imperfections or to divide the strip of veneer up into pieces according to the various grades of veneer wood contained in the strip.
  • the bars as indicated at 42 in Fig. '7, are laid in position on the veneer by the veneer inspector they move along the veneer and under the belt 36 and are picked up by the electromagnetic means 29 and brought to a position at which they contact rollers 33 of the switch mechanism 32.
  • the position of the switch mechanism is such that at the instant a bar contacts the switch rollers, the position at which the bar was placed by the inspector will be directly under the clipper knife-
  • the bars pass under the switch rollers and continue along the belt 30 until they are deposited in the receptacle 3! from which they may be removed by the inspector for reuse as the process of dividing the veneer strip up into suitable pieces continues.
  • a suitable clipper for severing the veneer strip is shown in Figs. 8 and 9.
  • Such a clipper may be of relatively simple form having a frame comprising a pair of vertical standards 44 and rigidly mounted on a suitable base 46 and connected at their upper ends by a top beam or plate 41'.
  • a shaft 43 is pivotally supported thereby and carries a pair of parallel arms as indicated at so to the outer end of which is adjustably connected a knife bar or bracket 50.
  • the bracket to carries a clipper knife 5! which cooperates with the edge of a fixed shear plate 52 to sever the veneer strip whenever the clipper isactuated.
  • the shear plate is carried at the upper end of suitable standards 53 connected by brack ets as indicated at 54 to the standards indicated at45 to constitute a rigid frame for the clipper.
  • the bracket member 55 suspends from the top plate 41 and pivotally supports a two-way electromagnet 56, the armature of which is connected by suitable link 51 with a knife supporting arm i9.
  • the actuating circuit for the solenoids is such that when the clipper control switch or relay M is closed the solenoids 56 move the clipper downwardly to sever the veneer but when the knife reaches its lowermost position this circuit is automatically broken and a different circuit established which energizes the solenoids to quickly raise the knife and hold it in its raised inoperative position until the actuating switch is again closed.
  • a suitable veneer guide 58 is positioned above the shear plate 52 to guide the ends of the veneer and prevent the knife from raising the end of the veneer strip as the knife returns to its upper position and to insure that the strip after being severed will continue to pass beneath the knife and through the clipper.
  • the rack or table 59 has its pivoted forward edge disposed somewhat below the upper surface of the shear plate 52 so that as the pieces are cut from the strip they will drop onto the table.
  • This table is urged to its upper or substantially horizontal position, as illustrated in Fig. 8, by a suitable compression spring 65 and is moved to its lower or tilted position, as illustrated in Fig. 9, by suitable means such as the solenoid 66.
  • is supported on a roller 61 having an axle 58, the ends of which are guided in vertical slots in respective end blocks 69 and Hi.
  • the axle is urged to its uppermost position by suitable calibrated springs II and i2 and is moved downwardly by the weight of veneer pieces stacked thereon by the clipper table 59.
  • a pair of electric contacts i3 and 14, Fig. 9 are brought together to close the electric circuit energizing the motor '55 (Fig. 1) which drives the conveyor 5
  • a relay switch 16 is provided in the circuit which controls the solenoid 66 so that this solenoid cannot be energized as long as the circuit energizing the motor 15 is closed. During this interval veneer pieces will pile up on the clipper table and will be discharged therefrom as soon as the motion of conveyor 6
  • This means may conveniently include a spring switch Tl mountedon a horizontal scale arm 18 extending outwardly from the clipper frame. This switch may be held at any selected position along the scale arm by suitable means such as the set screw 19.
  • a lever 89 extends downwardly from the switch in position to be contacted by the leading edge of the veneer strip passing through the clipper. The edge of the veneer strip will movethe lever sufiicient to close the switch which will then complete a circuit from the line wires 8
  • a lead 83 from the switch wire 84 leads to the solenoid 99 completing the side of the circuit from the line 8
  • these circuits are automatically interrupted when the clipper knife descends so that the spring 55 will immediately return the table to its upper and horizontal position.
  • a manual switch 86 is preferably included in the wire 8! leading from wire Bl to switch Ti so that switch I! may be put out of operation when desired.
  • the clipper table When the switch H is not in operation the clipper table may be operated by other clipper control means such as the switch 32 shown in Figs. 5 and 6 and will operate in the same manner to deposit the veneer pieces onto the conveyor 6! while the conveyor 6
  • Figs. 1, 8 and 9 portions of suitable wiring circuits are shown, and it will be seen that the circuits of Figs. 8 and 9 are specifically different.
  • power supplied through a suitable control panel through the line wires L-l and L-2 to the solenoids 56, and also through a retarding circuit taken through the branch lines 65a and 65b to the solenoid 66.
  • the solenoid 6B is actuated after the knife 5i has severed the sheet, and accordingly the electrification should be such as to delay the energization of the solenoid 66 until after the solenoids 56 have performed their function.
  • Fig. 9 a variation of the circuit is shown to incorporate the micro-switch T! which is employed when it is desired to cut the veneer into pieces of the same length. Inasmuch as this circuit has already been described, it need not be retraced.
  • a suitable control circuit for the motor 75 and cutout relay 16 is more or less schematically illustrated at the lower portion of Fig.
  • the relay 15 may be of the type which is energized whenever the motor 15 is runnning, and the energized position is shown in Fig. 9.
  • power for the motor 75 may be supplied manually from the line wires L-! and L-Z through the switch 8-! upon closing this switch, thus giving direct and independent control of the motor whenever desired.
  • Manually controlled switch 8-2 when closed, makes power available for the motor 15 through the armatures of a relay R-l, which is in the circuit leading from the contactor points 73 and 14 and associated wires 13a and 14a, shown in Fig. 9. It has also been pointed out that it may be desirable to provide automatic cut-off for the motor when the conveyor 6
  • Such control may be effected mechanically by a lug Bla clipped to the side of the conveyor belt, and which can trip the arm C-I of a normally closed control switch C, bodily movable to any desired position along the conveyor stretch.
  • This circuit may briefly be described as follows;
  • relay It will be energized and operation of the solenoid 95 thereby forestalled. It will further be apparent that when the lug BIa strikes the arm CI to open the contacts of switch C, the local circuit through relay R-2 will be broken, thereby deenergizing both relays R-I and. 13-2 to stop the motor I5, deenergize relay I6, and restore the circuits to the condition they were assumed to be in at the outset of this summary.
  • FIGs. and 11 An alternative method for indicating the locations at which the strip is to be severed is illustrated in Figs. and 11.
  • This method uses the same moving grid pattern and fixed grid pattern as described above but instead of placing bars of magnetic material on the surface of the veneer strip the locations at which the strip is to be severed are marked with a suitable material such as chalk.
  • the chalk may be applied directly by hand or may be applied by a device such as that generally indicated at 89.
  • This device comprises a stand 89 which supports a powder container 9i) immediately above the conveyor at one edge thereof.
  • leads from the container and an air bulb 92 is connected to the container in such a manner that manual pressure on the bulb will discharge a sufficient quantity of chalk or other powder through the nozzle 9i to make a line on the surface of the veneer.
  • a combined light projection and photoelectric device is positioned above the conveyor at a location such that it will be focused on the chalk marks or lines as they pass beneath the device at or near the location at which the clipper knife severs the veneer.
  • This device is mounted on a suitable support, gen.- erally indicated at 94, and is electrically oonnected with the solenoid 56 by suitable connectors and 9B.
  • Leads 91 and 93 connect the device itself with the line wires 99 and I99 and a manual switch I9I is incorporated between the device and the solenoid so that the device may be put out of operation when its service is not desired.
  • the actuating solenoid for the rack 59, and the conveyorfor removing the sheets have not been illustrated, as it is obvious that they may be included in the manner previously explained, if desired.
  • the photoelectric device is made color sensitive so that it will respond only to a predetermined color of chalk or other mark and will not respond to any variations of color or light reflecting characters of the wood itself.
  • Fig. 11 shows a manner in which marks may be located to eliminate the imperfections from the veneer, the marks being indicated at I92 on the veneer strip I03.
  • the device may be used for dividing the veneer strip into pieces of equal size or into pieces of measured length.
  • a frame I04 is pivotally connected to a suitable standard or support I05 adjacent one side of the conveyor by suitable hinge connections I09.
  • the bracket I04 has a pair of arms I01 and I98 extending lengthwise of the conveyor in opposite directions, the arm I08 being materially longer than the arm I91 and being provided with an elongated guide slot I09.
  • a roller Hill is journalled in the end of the arm I91 and a corresponding roller III is journalled on a guide block H2 slidable in the guide slot I09 and adjustable along the guide slot by means of a screw shaft II 3 operated by a hand crank H4.
  • An endless belt I I5 of flexible material such as rubber passes around the two rollers H9 and III and carries one or more projections, as indicated at H6, positioned to actuate the lever I I! of a spring switch H8 connected by suitable wire leads H9 and I29 with the clipper solenoid 56.
  • the rollers H9 and II I rest, when the device is in operative position, upon the surface of the veneer strip so that the belt H5 is driven at the same speed at which the strip moves through the clipper.
  • the intervals at Which the projection II 6 trips the switch I I8 can be varied so that veneer pieces of desired length can be out.
  • the length of the piece to be cut is accurately determined. by means of a scale I 2
  • a strip of wood veneer or other sheet material can be divided at will into pieces as determined by the various grades of material in the strip or can be automatically divided into pieces of desired uniform length regardless of grade variation.
  • the operation of the clipping mechanism is entirely automatic and is of sufiicient speed that the clipper will at all times keep pace with the veneer cutting lathe and there will not at any time be any necessity for discontinuing operation of the lathe to permit the clipper to catch up.
  • two sets of the above mechanism may be used adjacent to one lathe, which mech anism may be used simultaneously or alternately as operating conditions may require.
  • a conveyor for supporting and movin a strip of sheet material; a sheet clipper at the discharge end of said conveyor; bars of magnetic material placeable on said strip to determine locations at which the strip is to be out; electromagnetic means associated with said conveyor for removing said bars from the strip of sheet material; and switch means operatively associated with said electromagnetic means operable by said bars to actuate said clipper in accordance with the location of said bars on said strip of sheet material.
  • a conveyor for supporting and moving sheet material; a sheet clipper at the discharge end of said conveyor; means placeable on said sheet material to determine locations at which the strip is to be cut comprising pairs of bars of magnetic material held in parallel spaced relationship to each other by flexible connectors; electromagnetic means associated with said conveyor for removing said bars from the strip of said material and switch means operatively associated with said electromagnetic means operable by said bars to actuate said clipper to sever said sheet material into pieces corresponding in size to the spacing between each pair of parallel bars.

Landscapes

  • Engineering & Computer Science (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)
US69324146 1946-08-27 1946-08-27 Veneer clipper Expired - Lifetime US2623587A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US69324146 US2623587A (en) 1946-08-27 1946-08-27 Veneer clipper
FR7222590A FR2143302B1 (enrdf_load_stackoverflow) 1946-08-27 1972-06-22

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69324146 US2623587A (en) 1946-08-27 1946-08-27 Veneer clipper
FI711772A FI45836C (fi) 1971-06-22 1971-06-22 Menetelmä ja laitteisto sorvaamalla valmistettavan puuviilun leikkaami seksi syykuvioiltaan yhdenmukaisiksi arkeiksi.

Publications (1)

Publication Number Publication Date
US2623587A true US2623587A (en) 1952-12-30

Family

ID=26156517

Family Applications (1)

Application Number Title Priority Date Filing Date
US69324146 Expired - Lifetime US2623587A (en) 1946-08-27 1946-08-27 Veneer clipper

Country Status (2)

Country Link
US (1) US2623587A (enrdf_load_stackoverflow)
FR (1) FR2143302B1 (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890749A (en) * 1955-10-10 1959-06-16 Clear Fir Products Co Inc High speed toggle driver pivoted veneer clipper
US2920681A (en) * 1955-05-11 1960-01-12 Minnesota Mining & Mfg Solenoid control and tape forming machine
US3054516A (en) * 1960-08-19 1962-09-18 Joa Curt George Apparatus for stacking sheets
US3117479A (en) * 1959-05-22 1964-01-14 United States Steel Corp Device for testing a pinhole detector
US3120861A (en) * 1960-07-14 1964-02-11 Western Pine Ass Method and apparatus for identifying and evaluating surface characteristics of forest products
US3141589A (en) * 1959-06-06 1964-07-21 Saint Gobain Method of and apparatus for cutting glass sheets
US3165961A (en) * 1962-11-30 1965-01-19 Weyerhaeuser Co Apparatus for automatically cutting defective veneer sheets
US3461759A (en) * 1967-06-20 1969-08-19 Columbia Controls Research Cor Sheet inspecting and segregating apparatus
US3760667A (en) * 1969-01-15 1973-09-25 Black Clawson Co Veneer defect detector and clipper control
US4269242A (en) * 1978-01-04 1981-05-26 Smith Clark K Combination log cutter, splitter and bundler
US4284112A (en) * 1977-12-14 1981-08-18 Hoskin Charles E Automatic wood cutting and splitting machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1157134B (it) * 1982-12-10 1987-02-11 Saiag Spa Procedimento ed apparecchiatura per realizzare mediante estrusione continua un trafilato in particolare una guarnizione di tenuta per carrozzerie di autoveicoli presentante successivi tratti di lunghezze predeterminate aventi ciascuno una rispettiva sezione prestabilita e trafilato ottenuto con tale procedimento

Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1127975A (en) * 1914-02-26 1915-02-09 John E Elwing Cutting-gage for veneer-clippers.
US1150541A (en) * 1914-03-16 1915-08-17 American Sheet & Tin Plate Shear-table.
US1440383A (en) * 1921-12-05 1923-01-02 Orin C Fenlason Variable feed for veneer jointers and the like
US1565840A (en) * 1924-05-26 1925-12-15 Continental Can Co Tin-plate-piling apparatus
US1566701A (en) * 1925-12-22 Delotery apparatus
US1629522A (en) * 1925-09-04 1927-05-24 Dahlberg & Company Inc Means for slitting sheet material
US1686088A (en) * 1927-10-12 1928-10-02 Frederick W Horstkotte Unloading machine
US1757204A (en) * 1928-12-11 1930-05-06 Vaughan N Magill Method of and mechanism for watermarking and cutting paper
US1819991A (en) * 1927-09-10 1931-08-18 Firestone Tire & Rubber Co Band cutting machine
US1841853A (en) * 1928-10-06 1932-01-19 Merritt Engineering & Sales Co Veneer clipping machine
FR42697E (fr) * 1932-12-27 1933-09-01 Procédé et dispositif pour l'obtention de plaques sèches de pâte de bois, de cellulose ou autres substances analogues à partir d'une bande mouillée de cette substance
US2077439A (en) * 1931-01-06 1937-04-20 American Mach & Foundry Registering sheet feed
US2086374A (en) * 1936-04-15 1937-07-06 Us Rubber Prod Inc Apparatus for cutting stock
GB480224A (en) * 1937-04-30 1938-02-18 Orland Russell Sweeney Mat board handling machine
US2151570A (en) * 1936-02-27 1939-03-21 Gen Electric Control system
US2171667A (en) * 1937-10-16 1939-09-05 Roofing Machinery Mfg Co Inc Roll-winding mechanism
US2193259A (en) * 1939-06-05 1940-03-12 Morgan Construction Co Shearing apparatus
US2222842A (en) * 1939-02-23 1940-11-26 Moulding Patents Inc Apparatus for producing weakened scored portions in strip material
US2286686A (en) * 1939-11-27 1942-06-16 Earll R Muddiman Apparatus for rejecting defective metallic sheets
US2338596A (en) * 1941-12-11 1944-01-04 Eastman Kodak Co Feeding and severing means for strip material
US2341011A (en) * 1942-12-26 1944-02-08 Bell Telephone Labor Inc Ticket cutter
US2379682A (en) * 1944-03-04 1945-07-03 Colucci Giovanni Machine for cutting veneer
US2382801A (en) * 1942-04-17 1945-08-14 Firm Muller A G Brugg Maschine Adjusting and control device for material working machines
US2394558A (en) * 1944-10-28 1946-02-12 Elliott Bay Mill Co Electric control means for veneer clippers

Patent Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1566701A (en) * 1925-12-22 Delotery apparatus
US1127975A (en) * 1914-02-26 1915-02-09 John E Elwing Cutting-gage for veneer-clippers.
US1150541A (en) * 1914-03-16 1915-08-17 American Sheet & Tin Plate Shear-table.
US1440383A (en) * 1921-12-05 1923-01-02 Orin C Fenlason Variable feed for veneer jointers and the like
US1565840A (en) * 1924-05-26 1925-12-15 Continental Can Co Tin-plate-piling apparatus
US1629522A (en) * 1925-09-04 1927-05-24 Dahlberg & Company Inc Means for slitting sheet material
US1819991A (en) * 1927-09-10 1931-08-18 Firestone Tire & Rubber Co Band cutting machine
US1686088A (en) * 1927-10-12 1928-10-02 Frederick W Horstkotte Unloading machine
US1841853A (en) * 1928-10-06 1932-01-19 Merritt Engineering & Sales Co Veneer clipping machine
US1757204A (en) * 1928-12-11 1930-05-06 Vaughan N Magill Method of and mechanism for watermarking and cutting paper
US2077439A (en) * 1931-01-06 1937-04-20 American Mach & Foundry Registering sheet feed
FR42697E (fr) * 1932-12-27 1933-09-01 Procédé et dispositif pour l'obtention de plaques sèches de pâte de bois, de cellulose ou autres substances analogues à partir d'une bande mouillée de cette substance
US2151570A (en) * 1936-02-27 1939-03-21 Gen Electric Control system
US2086374A (en) * 1936-04-15 1937-07-06 Us Rubber Prod Inc Apparatus for cutting stock
GB480224A (en) * 1937-04-30 1938-02-18 Orland Russell Sweeney Mat board handling machine
US2171667A (en) * 1937-10-16 1939-09-05 Roofing Machinery Mfg Co Inc Roll-winding mechanism
US2222842A (en) * 1939-02-23 1940-11-26 Moulding Patents Inc Apparatus for producing weakened scored portions in strip material
US2193259A (en) * 1939-06-05 1940-03-12 Morgan Construction Co Shearing apparatus
US2286686A (en) * 1939-11-27 1942-06-16 Earll R Muddiman Apparatus for rejecting defective metallic sheets
US2338596A (en) * 1941-12-11 1944-01-04 Eastman Kodak Co Feeding and severing means for strip material
US2382801A (en) * 1942-04-17 1945-08-14 Firm Muller A G Brugg Maschine Adjusting and control device for material working machines
US2341011A (en) * 1942-12-26 1944-02-08 Bell Telephone Labor Inc Ticket cutter
US2379682A (en) * 1944-03-04 1945-07-03 Colucci Giovanni Machine for cutting veneer
US2394558A (en) * 1944-10-28 1946-02-12 Elliott Bay Mill Co Electric control means for veneer clippers

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920681A (en) * 1955-05-11 1960-01-12 Minnesota Mining & Mfg Solenoid control and tape forming machine
US2890749A (en) * 1955-10-10 1959-06-16 Clear Fir Products Co Inc High speed toggle driver pivoted veneer clipper
US3117479A (en) * 1959-05-22 1964-01-14 United States Steel Corp Device for testing a pinhole detector
US3141589A (en) * 1959-06-06 1964-07-21 Saint Gobain Method of and apparatus for cutting glass sheets
US3120861A (en) * 1960-07-14 1964-02-11 Western Pine Ass Method and apparatus for identifying and evaluating surface characteristics of forest products
US3054516A (en) * 1960-08-19 1962-09-18 Joa Curt George Apparatus for stacking sheets
US3165961A (en) * 1962-11-30 1965-01-19 Weyerhaeuser Co Apparatus for automatically cutting defective veneer sheets
US3461759A (en) * 1967-06-20 1969-08-19 Columbia Controls Research Cor Sheet inspecting and segregating apparatus
US3760667A (en) * 1969-01-15 1973-09-25 Black Clawson Co Veneer defect detector and clipper control
US4284112A (en) * 1977-12-14 1981-08-18 Hoskin Charles E Automatic wood cutting and splitting machine
US4269242A (en) * 1978-01-04 1981-05-26 Smith Clark K Combination log cutter, splitter and bundler

Also Published As

Publication number Publication date
FR2143302B1 (enrdf_load_stackoverflow) 1973-07-13
FR2143302A1 (enrdf_load_stackoverflow) 1973-02-02

Similar Documents

Publication Publication Date Title
US2623587A (en) Veneer clipper
US2427223A (en) Sheet cutting and delivery means
US3406966A (en) Machines for stacking flexible sheets
US1706632A (en) Lumber-sorting machine
US4836074A (en) Machine for cutting stacks of paper sheets and the like
US3631979A (en) Apparatus for classifying photographic prints or the like
US2379682A (en) Machine for cutting veneer
US4023605A (en) Method for grading and measuring lumber and a trimming device for performing said method
US4316565A (en) Sheet transfer apparatus
US1892590A (en) Metal sheet stacking machine
US3523392A (en) Apparatus for measuring and cutting lengths of cable
US1600958A (en) Counting and stacking machine
US3906825A (en) Belt shearline having metering roller
US3802699A (en) Conveying apparatus with overlapping means for stacking purposes
US3182539A (en) Paper feeding and cutting machine
US2793662A (en) Trimming and assorting device for sheet-like materials
US3044508A (en) Mark sensing lumber defect cutter
US2570306A (en) Apparatus for counting and marking sheets cut from webs
US2492386A (en) Sheet sorting device
US2277846A (en) Stacking machine
US3203291A (en) Cutting machine
US1894415A (en) Lumber retrimming machine
US2779408A (en) Method and apparatus for handling print strip
US2738729A (en) Method for trimming and slitting webs
US2165917A (en) Method and apparatus for producing steel sheets