US3793568A - Control apparatus for a machine for stacking boards or the like - Google Patents

Control apparatus for a machine for stacking boards or the like Download PDF

Info

Publication number
US3793568A
US3793568A US00327131A US3793568DA US3793568A US 3793568 A US3793568 A US 3793568A US 00327131 A US00327131 A US 00327131A US 3793568D A US3793568D A US 3793568DA US 3793568 A US3793568 A US 3793568A
Authority
US
United States
Prior art keywords
boards
pulse
counters
counter mechanism
pulse counters
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
US00327131A
Other languages
English (en)
Inventor
R Balz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3793568A publication Critical patent/US3793568A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G57/00—Stacking of articles
    • B65G57/02—Stacking of articles by adding to the top of the stack
    • B65G57/16—Stacking of articles of particular shape
    • B65G57/18—Stacking of articles of particular shape elongated, e.g. sticks, rods, bars

Definitions

  • both preselection pulse counters which can be reset to null
  • scanning or feeler switch means which permit the infeed of the generated pulses to both pre-selection pulse counters during passage of the boards pasta scanning location; ((1) an operable connection between both preselection pulse counters so that during one working cycle one such pre-selection pulse counter functions as an adding counter mechanism and the other as a storage counter mechanism, in that after interrupting the infeed of the pulses which is comparable to the throughpassage of the rear edge of a board past the scanning location the other of such pre-selection pulse counters is reset to null, and specifically until the adding counter mechanism has attained a preselected pulse number, wherein at the moment of reaching such pre-selected pulse number (di) both pulse counters are switched so that from that moment on the storage counting mechanism functions as an adding counter mechanism and the adding counter mechanism functions as a storage counter mechanism, so that the combination of both such counters is prepared for the measurements in the next working cycle, (dii) a
  • Another and more specific object of the present invention relates to a new and improved construction of control apparatus for machines for stacking boards and which is extremely reliable in operation, relatively uncomplicated in design, economical to manufacture, and requires a minimum of servicing and maintenance.
  • c scanning or feeler switch means which permit the infeed of the generated pulses to both pre-selection pulse counters during passage of the boards past a scanning location;
  • both pulse counters are switched so that from that moment on the storage counting mechanism functions as an adding counter mechanism and the adding counter mechanism functions as a storage counter mechanism, so that the combination of both such counters is prepared for the measurements in the next working cycle,
  • a relay is actuated which at a follow-up or sequence control mechanism triggers a first operation of a logical sequence of working operations of the stacking machine.
  • control mechanism can be further constructed in a manner that it also can be employed to control means by virtue of which there can be achieved the result that the outermost boards located in a stack are aligned such that their outer edges extend parallel to the lengthwise axis of the stack.
  • FIG. 1 is a perspective schematic view of the stacking machine
  • FIG. 2 is a schematic partial elevational view of the arrangement of FIG. 1, in which there have been depicted components of the control apparatus;
  • FIG. 3 is a partial side elevational view of the arrangement of FIG. 2 depicting a pulse transmitter which is part of the control apparatus;
  • FIGS. 4, 5, 6 and 7 are respective schematic elevational views, similar to the showing of FIG. 2, depicting different successive operational or functional phases of the equipment.
  • FIG. 8 is an electrical circuit diagram of the control apparatus.
  • the transverse conveying chains 104 are provided with conveying cams or dogs 105 located at a regular or uniform spacing from one another. These conveying cams 105 laterally withdraw each board from the rollers 101, so that each such board extends with its lengthwise edge which is located rearwardly with respect to the conveying direction parallel to the Y-direction, that is to say, with respect to the lengthwise axis of the stack 11].
  • each board actuates a feeler flap or tongue member 14a of a switch 14 of the particular measuring-and control apparatus which is provided.
  • switches electrically connected in parallel behind one another in the Y-direction or there can be actuated a single switch 14 by means of a flap or tongue member 14a which extends over all of the conveying chains 104.
  • presses 109 are placed into operation which press such board against the stop beam 108 so that its forwardmost lengthwise edge is aligned with respect to the Y-direction.
  • presses 107 and 109 are again retracted back into their rest position and the further advance of the conveyor chains 104 is again switched-in, and which chains previously were switched-out during such aligning operation.
  • the boards actuate the feeler flap members or feeler tongues 13a of a switch 13.
  • This switch 13 ensures that now the carrier or support arms 106 are advanced with the same speed as the transverse conveying chains 104 in their conveying direction. The displacement movement occurs for such length of time until the terminal switch 13 has sensed that the board has just completely moved therepast. After such displacement has been terminated the transverse conveying chains 104 continue to move and advance the next board, which bears by means of its lengthwise edge which trails in the conveying direction against the cams 105 and therefore is aligned with such edge in the Y- direction, until such board moves beneath the switch 13 and its feeler flap member 13a respectively.
  • the carrier or support arms 106 are extended in accordance with the board width. This procedure repeats for such length of time until the hereinafter to be described measuring and control apparatus determines that the next board, which at that moment is located at the region or sector A, still has place in the stack, yet however the second next board, which is still located in sector B, no longer has space in the stack.
  • the carrier arms 106 are extended into a fixed position, terminal position 1. This terminal position 1 is that location where there has been completed conveying of the boards by the transverse conveying cams, because such cams upon passing the deflecting rollers are lowered.
  • the transverse conveying cams 105 now transport the last board ofa stack layer to the support arms 106,whereby the switch 13 is now bridged and there is not carried out any additional feed or advancing movement of the support arms 106.
  • the spacing of the boards can be increased or decreased by a device provided at the feeler flap member 13a of the switch 13.
  • the stack 111 is raised by means of a lifting mechanism 116 in such a manner beneath the carrier arms 106 that such are no longer contacted.
  • the end or terminal position of the lifting'movement is controlled by feeler or scanning ledges 112 which are provided at the carrier or support arms and which cooperate with an associated terminal switch.
  • pin or nail ledges 113 i.e., ledges or strips with pins and a transverse rod magazine 114 arranged over the ity a number of such devices are arranged in tandem in the Y-direction.
  • the nail ledges 113 there are freely displaceably guided vertical upstanding pins 115 in such a way that they tend to fall down under the action of their own weight.
  • a thickened or enlarged portion provided at the head of each of the pins 115 prevents them from dropping out.
  • Lowering of the nail ledge 113 and the transverse rod magazine 114 occurs up to a point directly adjacent the boards 100 which have been deposited upon the carrier or support arms 106.
  • the degree of lowering is controlled by adjusting a feeler or scanner ledge which, for instance, is mounted at the'bottom at one of the transverse rod magazines and also cooperates with a terminal switch.
  • the loose steel pins 115 which cometo'bear upon a board, are raised during lowering of the nail ledges 113.
  • those steel pins which are located over a gap between neighboring boards enter into such gap.
  • the boards are prevented from carrying out a retraction movement owing to the dropped pins; they drop in series by a certain distance or height, which is equal to the thickness of the carrier arms plus a certain play, onto the already deposited board layer of the stack or upon ledges which have been deposited thereon by the magazine 114.
  • the steel pins 115 during suchdropping movement, also prevent to a large extent any lateral sliding or displacement of the boards, in order that the stack has imparted thereto a faultless appearance.
  • the lifting-mechanism 116 togetherwith the stack 111 can be lowered again by an amount corresponding at least to the layer thickness. Should, however, the stack be built up with transverse separation rods, then each magazine 114 must now be actuated in order to eject-one such transverse rod. in one or the other case there can occur during'the lowering of the stack raising of the transverse rod magazine 114 and the nail ledges 113. When this procedure has been completed then the machine is again ready for the deposition of a new board layer upon the support or carrier arms 106. Terminal switches which are provided at the lifting mechanism 116 carrying the stack 111 switch-off the machine as soon as a stack has been finished which possesses a desired or certain height.
  • the measuringand control apparatus which is to be described has determined that a board layer has been formed, then it actuates an operable element, in particular a relay 25 (FIGQ8) which triggers at a sequence or follow-up control mechanism a first operation of a logical sequence of working operations for the stacking machine, wherein by means of terminal switches always the end of an individual operation can be ascertained and a further operation initiated; the sequence of operations occurs in the manner as has been abovedescribed.
  • a relay 25 (FIGQ8) which triggers at a sequence or follow-up control mechanism a first operation of a logical sequence of working operations for the stacking machine, wherein by means of terminal switches always the end of an individual operation can be ascertained and a further operation initiated; the sequence of operations occurs in the manner as has been abovedescribed.
  • This control apparatus incorporates means which for each unit of the displacement path of the boards 100 produces an electrical pulse.
  • Such means can be for instance a conventional light barrier or a mechanically actuated switch.
  • this disk 8 is in driving connection with the drive of the conveyor chains 104 through the agency of a chain drive 118.
  • the initator 4 is applied to a direct-current voltage following the rectifier arrangement 3 (FIG. 8).
  • a control flag 8a the current circuit of the initiator 4 is closed and accordingly a relay 5 energized.
  • the contact 6 of the relay 5 is actuated by the pulse commands of the initiator 4.
  • the rectifier arrangement 7 there is thus produced a sequence of pulses.
  • the measuring and control apparatus possesses two pre-selection pulse counters 27 and 30 which can be reset to null.
  • Such possess feeler or scanning switch means which permit the infeed of the generated pulses to both pulse counters or counter mechanisms during the passage of the boards past ascanning location.
  • scanning switch means longing to such scanning switch means are the scanning switch l4 with the feeler or scanning flaps 14a (the details of which have already been discussed above) as well as a scanning switch 10 with the scanning flap member 100; the scanning switch 10 with the scanning flap member 10a is associated as an auxiliary means withthe scanning switch 14 with the scanning flap member 14a since the latter, in the case of boards of for instance approximately trapezoidal shape in profile, as such are produced by a gang saw are not capable along of determining completion of the throughpassage of such board at the' scanning location. Furthermore, there is also provided an operable connection between both pre-selection pulse counters and there are also present additional components, as will be apparent from FIG. 8 and the function of the apparatus which will be considered hereinafter. There will now be considered the mode of operation of the equipment.
  • FIG. 4 OPERATION OF THE MEASURING- AND CONTROL APPARATUS l. Preparatory phase, FIG. 4
  • the board in sector C is engaged by the entrainment cams 105 of the conveyor chains 104 and forwardly fed in the direction of the depicted arrow.
  • FIG. 5 Beginning of the measuring operation, FIG. 5.
  • the measurement operation begins after the terminal switch 14 has been actuated.
  • the terminal switch 14 closes the contact 34 via the relay 21 and the contact 39 as well as via the relay 40.
  • the pulses which are delivered by the initiator 4 are recorded at the pulse counters or counter mechanisms 26 and '29.
  • the terminal switch 10 After the measurement throughpassage the terminal switch 10 is actuated. By means of the relay 22 it terminates the infeed of pulses by switching-off or opening the contacts 35 and 37. Furthermore, the relay 22 delivers a pulse via the contacts 36 and 33 to the null reset coil 30 of the pre-selection counter or counter mechanism 29. This pulse counter 29 therefore resets to null. On the other hand, at the pulse counter 26 there remain the already counted pulses and the subsequent pulses are added thereto. I
  • the terminal switch 10 When the pulse counter 26 has reached its pulse count number corresponding to the maximum width of the stack layer, the terminal switch 10 has carried out measurement of the just passing board but such has not yet been terminated, which is indicative of an additionalboard width, then this board should no longer be brought into the stack layer which is in the process of being formed. However, the board in sector A still has place in such stack and therefore must be introduced into such stack as the last board. This occurs in the manner above described during the description of the operation of the stacking machine. Reporting of the completion of the layer is brought about by a pulse via the relay 23 and the contact 40' to the stepping switch 24 which closes the contact 32 and at the same time opens the contact 33.
  • the pulse counter 26 Upon"completion of the measurement operation and at the same time the final reporting of the layer the pulse counter 26 is energized via the contacts 32 and 36 of the null resetting coil 27 and accordingly the pulse counter 26 resets to its null position.
  • the pulses which correspond to the width of the board located at the sector B, are now stored how- I ever at the pulse counter 29.
  • the pulse counter which previously operated as a storage now functions as an adding counter mechanism oradder, whereas the pulse counter 26 which previously was functioning as the cessive boards again occurs in the manner described in the precedingparagraphs 2 to 4 of this description.
  • the pulse counter 29 When there has again been reported completion of'a stack layer by the pulse counter 29 the function of both pulse counters is again reversed and the measurement occurs again according to the afore-described paragraphs 2 to 4.
  • a control apparatus for a machine for stacking boards of regular and irregular shape comprising:
  • scanning switch means for the infeed of the generated pulses to both pre-selection pulse counters during the passage of the boards past a scanning location;
  • both pulse counters are switched so that from that point on the storage counter mechanism functions as the addition counting mechanism and the addition counter mechanism functions as the storage counter mechanism, so that the combination of both such pulse counters is prepared for the measurements in the next working cycle,
  • a relay is actuated which triggers in a sequence control mechanism a first operation of a logical sequence of working operations of the stacking machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Control Of Conveyors (AREA)
US00327131A 1972-02-01 1973-01-26 Control apparatus for a machine for stacking boards or the like Expired - Lifetime US3793568A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH143972A CH560151A5 (enrdf_load_stackoverflow) 1972-02-01 1972-02-01

Publications (1)

Publication Number Publication Date
US3793568A true US3793568A (en) 1974-02-19

Family

ID=4210484

Family Applications (1)

Application Number Title Priority Date Filing Date
US00327131A Expired - Lifetime US3793568A (en) 1972-02-01 1973-01-26 Control apparatus for a machine for stacking boards or the like

Country Status (8)

Country Link
US (1) US3793568A (enrdf_load_stackoverflow)
AT (1) AT324223B (enrdf_load_stackoverflow)
AU (1) AU469491B2 (enrdf_load_stackoverflow)
CA (1) CA984933A (enrdf_load_stackoverflow)
CH (1) CH560151A5 (enrdf_load_stackoverflow)
FR (1) FR2170108B1 (enrdf_load_stackoverflow)
IT (1) IT976526B (enrdf_load_stackoverflow)
ZA (1) ZA73584B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3417097A1 (de) * 1984-05-09 1985-11-14 Franz-Josef 5779 Eslohe Sapp Verfahren und geraet zum stapeln und verpacken von langware in einem saegewerk, insbesondere zum stapeln und verpacken von dachlatten o.ae.
DE3914320A1 (de) * 1989-04-29 1990-10-31 Kallfass Gmbh & Co Maschbau Ablaengvorrichtung
EP1026108A3 (de) * 1999-02-02 2001-05-30 Springer Maschinenfabriek Ges.m.b.H. Verfahren zur Bildung von Kastenstapeln für Schnittgut
FR2836855A1 (fr) * 2002-03-08 2003-09-12 Bois Conseil Installation de formation automatique de lits et de paquets de planches de dimensions predeterminees
US20110232059A1 (en) * 2008-12-01 2011-09-29 Thomas Rossmann Method and device for fully automatically selecting and packing photovoltaic modules

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3154726A (en) * 1961-10-12 1964-10-27 Super Laundry Mach Co Folding machine controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3154726A (en) * 1961-10-12 1964-10-27 Super Laundry Mach Co Folding machine controller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3417097A1 (de) * 1984-05-09 1985-11-14 Franz-Josef 5779 Eslohe Sapp Verfahren und geraet zum stapeln und verpacken von langware in einem saegewerk, insbesondere zum stapeln und verpacken von dachlatten o.ae.
DE3914320A1 (de) * 1989-04-29 1990-10-31 Kallfass Gmbh & Co Maschbau Ablaengvorrichtung
EP1026108A3 (de) * 1999-02-02 2001-05-30 Springer Maschinenfabriek Ges.m.b.H. Verfahren zur Bildung von Kastenstapeln für Schnittgut
FR2836855A1 (fr) * 2002-03-08 2003-09-12 Bois Conseil Installation de formation automatique de lits et de paquets de planches de dimensions predeterminees
US20110232059A1 (en) * 2008-12-01 2011-09-29 Thomas Rossmann Method and device for fully automatically selecting and packing photovoltaic modules

Also Published As

Publication number Publication date
DE2259394B2 (de) 1975-09-25
AU5154773A (en) 1974-08-01
DE2259394A1 (de) 1973-08-09
FR2170108B1 (enrdf_load_stackoverflow) 1976-09-10
FR2170108A1 (enrdf_load_stackoverflow) 1973-09-14
CA984933A (en) 1976-03-02
AT324223B (de) 1975-08-25
CH560151A5 (enrdf_load_stackoverflow) 1975-03-27
AU469491B2 (en) 1976-02-12
IT976526B (it) 1974-09-10
ZA73584B (en) 1973-10-31

Similar Documents

Publication Publication Date Title
US2703182A (en) Pallet loader
US2699264A (en) Pallet loader
US2949179A (en) Machine for stacking cans on pallets
US4311475A (en) Counter ejector
US4111411A (en) Sheet stacking apparatus
US2954881A (en) Separation of articles from a stack
US2875907A (en) Apparatus for loading units
US3217859A (en) Feeding of groups of articles
EP0308207A1 (en) Stacker with a yoke-type stripping device
US3842719A (en) Method and apparatus for forming a dense shingled array of signatures
US3793568A (en) Control apparatus for a machine for stacking boards or the like
US3086640A (en) Article handling apparatus
US2661209A (en) Sheet distributor
US2770192A (en) Sheet receiving tray for rotary printing machine
US3643822A (en) Can palletizer
US3338431A (en) Method and apparatus for stacking articles
US3114308A (en) Automatic feeder for a bundle tyer
DE2623669A1 (de) Vorrichtung zum pruefen eines muenzenstapels in einer muenzenverpackungsmaschine
US3951282A (en) Method for feeding fibers
DE4001502A1 (de) Papierpositioniereinrichtung
US3904047A (en) Lumber stacking apparatus
US3893282A (en) Article packer apparatus
US4277060A (en) Method of forming a packet of signatures and stacker for implementing said method
KR102152869B1 (ko) 육묘상자 파레트 적재장치
US2769378A (en) Mechanism for counting and stacking magazines and the like