US2407070A - Core splicer - Google Patents

Description

INVENTO.

o $1 v\ 1.. ...d Y. I.

Sept. 3, 1946. c. c. FRAME CORE SPLICER Filed `March v4, V1942 s sheets-sheet 1 MM. n@

TMHNEM Sept. 3, 1946.

CORE SPLICER Filed March 4, 1942 3 Sheets-Sheet 2 I ..1 f?? N 11M/" NWI l INVENTOR B afmzv aff-MM /f/Q/ c. c. FRAME 2,407,070

'Sept 3, 1946.

c. c. FRAME CORE sPLcER Filed Mrch 4, 1942 3 *Sheets-Sheet 5 INV ENT OR.

Patented Sept. 3, 1946` UNITED STATES PATENT OFFICE CORE SPLICER Y Clifton C. Frame, Wabash, Ind., assignorto The G. M. Diehl Machine Works, Wabash, Ind., a corporation of Indiana Application March 4, 1942, Serial N0. 433,246

(c1. 1li-270) 4 Claims. 1

The present invention relates to improvements in machines for joining the edges of boards to produce a continuous ribbon from which panels of the desired size may be removed.

One of the objects of the invention is to provide means for successively feeding widths of board, to the edges of which an adhesive has been applied, under pressure and heat. The arrangement is such that, due to the pressure applied to the boards as they are fed through the machine, suilicient resistance is imposed thereon so that the successive boards which are fed to those boards under pressure will have theiredges forced together tightlyvand while held in this position, suicient heat will be applied for causing the adhesive to set.

Another object of my invention is to provide a machine having the above characteristics in which means are provided for cutting the continuous ribbon of wood passing from the delivery end of the machine into panels of desired size and this automatically as the material is fed from the machine.

Further objects and advantages of the invention will appear more fully hereinafter in the accompanying specification and appended claims.

For the purpose of `disclosing my invention, I

have illustrated an embodiment thereof in the accompanying drawings, in which:

Fig. 1 is a plan View of my invention, with the various cover plates removed;

Fig. 2 is a longitudinal sectional view of my invention on the line 2, 2 of Fig. l;

Fig. 3 is a sectional View on the line 3, 3 of Fis. 2;

Fig. 4 is a detail section on the line 4, 4 of Fis. 1;

Fig. 5 is a detail sectional view showing the support and heating means for the bottom heating plates:

Fig. 6 is a perspective view of the cut-01T saw and its operating mechanism, showing it in its projected position in dotted lines;

Fig. 7 is an enlarged detailed View of the adjusting means for the presser bars;

Fig. 8 is a detail sectional view showing the means for varying the pressure of the top presser bars; and

Fig. 9 is a detail sectional view on the line 9, 9 of Fig. 1 showing the adjustable gauge stops.

In the embodiment of the invention illustrated, I provide a pair of side frames I having downwardly extending legs 2, 2 at each end. Each of these side frames is preferably in the form of 2 channel members to give suiiicient rigidity thereto without unnecessarily adding to the weight.

A bed is supported between these side members and comprises a plurality of sections 3. Each section extends transversely between the end frames and each section comprises a top plate I having on its bottom face arcuate recesses for receiving heating pipes 5 which pipes are held in intimate contact with the walls of their recesses through the `medium of adjusting screws E` extending through the hollow bottom section 1. This bottom section is secured tothe top section 4 by screws 8 extending through the bottom section and into the top section. By means of the adjusting screws 6, the heating pipes 5 may be adjustably held in intimate contact with the walls of the grooves of the section 4. Each of these sections is vertically adjustably supported on longitudinally extending side channels 9 which extend the length of the frame and are secured at their ends to inwardly projecting plates I0 in turn secured, by welding or otherwise, to one of the inturned anges II of each of the channel legs 2. The opposite ends of the bed sections are supported on vertically adjusting screws I2 extending through the top legs of the channels 9 and each of the bed sections is held against vertical displacement after having once been set, by means of hold-down bolts I3 screwing into the bottom members of each section and extending through the top flange of the supporting U-channels 9. By this arrangement, each of the bed sections may be vertically adjusted and maintained in said vertically adjusted position as well as being held against longitudinal `or lateral displacement. Thus, each of the sections may be closely adjusted i, relatively `to the other one to prevent irregularities in the top surface of the bed. Due tol the fact that the bed is madeup of a plurality of sections 3, which. sections may be individually removed from the machine for the purpose of repair and so forth and which sections, when assembled in the machine, must present a smooth continuous bed, I provided the above described means for vertically adjusting the sections.

The pipes 5 are each connected with a supply header I4 in turn connected with supply pipes I5 and at theirpopposite ends with return connections I6 extending to headers I1 in turn connected with return pipes I8. This permits the circulation of live steam through the pipes for maintaining the bed sections properly heated.

, Mounted above the bed s a plurality of presser heaters. Each one of these heaters comprises a longitudinally disposed hollow presser bar I9 preferably rectangular in cross section and made hollow to receive suitable heating pipes. Each of these presser bars, at its opposite ends, has welded or otherwise secured thereto upwardly extending lugs 26 and for vertically adjustably supporting each end of the presser bars, I provide, at each end, a bell crank lever 2I. This leveris pivoted at 22 to a cross rod supported between arms 23' extending inwardly from a cross channel 24 secured between the side members I. One leg 25 of the bell crank lever is pivoted to a lug 2|] onV the pressure bar. The opposite leg, at its upper end, bears upon a longitudinally adjustable cross member 26. The cross member is provided with nuts 28 through which are threaded adjusting rods 29. The rods 29 are rotatably supported at one end in the cross channel 24. A similar cross channel 30 supports the opposite ends of the rods. Each of the rods or shafts 29 is provided with a worm gear 3| meshing with a worm 32Y on. a crossshaft 33 driven by a, hand wheel 34`. Due tothis construction, the height of eachl of the pressure bars I9 relative to the bed may be accurately adjusted. At the same time, each ofthe presser bars can move upwardly to adjust itself to irregularities or variations in the thicknessof the boards fed beneath the same. The bars I9 are maintained ina floating position and biased downwardly through the medium of pivoted posts 35 secured, at each end of the presser bars I9. The parts at each end extend through the horizontal leg 36 of an L-cross-bearn 31 supported between two side members I. In-

terposed between a nut 38 on the top ofthis post 4 and the leg 36 is a-coi1 spring 39 which resiliently supports the bar and a coiled spring 40 between the under face of the leg 36`r and the bar biases the same in a downward direction. Therefore, itl is biased normally in its downward direction under the influence of thespring 40 with sucient pressureto bear upon the topsV of the boards fed therethrough and, at thesame time, can move upwardly't'o accommodate any irregularities in the board. In some instances, the springsv 4may be dispensed with and the weight of the bars-alone be depended upon to provide the pressure. In order tomaintain the pressure ofthe bars I9 constant, irrespectiveY of'their vertical adjustment,` or inv order to modify the pressure of the-bars, the crossl beams'3'I are vertically adjustable by means of screws 4I supported from the side frames I andextending through nuts 42 at the ends of the beams. Each screw is provided with a worm wheel 43 driven from worms on shafts 44. There is one shaft for each of the cross beams so that while each cross beam may be adjusted separately, the two ends of each beam are adjusted simultaneously.

Eachv ofthe pressure bars I9, as before-stated, is-made hollow and passing through the presser bars are suitable heating pipes 45 arranged in pairs and extending the full length of the bars to provide inlet and return steam conduits; The ends of these pipes are connectedby swivel joints with suitable supply headers 46 and return headers 4-`I-so that the-presser bars I9 may, during the operation of the machine, be maintained heated tov the desired temperature.

The material is fed t0 the heating and pressing mechanism, above described, through the medium of a pair of reciprocatingy rams 48 and 49 which reciprocate above guide bars 50 disposed at the inlet end of the machine. These reciprocatingrams are separately'driven-su that either CII the' ram to receive another board.

may he used alone or the two may be driven simultaneously. To this end, each of the rams is provided with a downwardly extending lug 5I constituting a feeding nut through which extends a feeding screw 52, having at its forward end a worm gear 53 driven from a worm 54 on a shaft 55, extending transversely of the machine, Which shaft is driven by' a suitable chain or beit drive from a motor 56. Each motor is provided with a suitable reversing switch, as at 5l, within easy access of the operator, so that when the board is completely fed into the machine, the operator may, by the control of the switch, reverse the drive of the motor to retract If desired, of course, an automatic reversing switch can be provided for automatically driving the motors forward and reverse a sufficient time to give a complete forward and reverse stroke to each of the rams 48 and 49 at the receiving end. Each of the presser bars I9 is provided with a hinged lip 59? biased downwardly to exert just a little additional pressure on the board as the same is received beneath the presser bar.

In the operating of. so much of the machine as has been described, the initial board is fed beneath the presser bars I9 through the medium of the-rams 48 and 49 and after the rams have been retracted, the next succeeding board is dropped inA front of the ram with its front edge containing ann adhesive.v This board is then pushed forward against the initial board which has been partially fed into the machine and as it ispushed forward, an intimate joint is made between the rear edgeofthe initial board# andthe forward edge of the inserted board. The pressure of the presser bars I9 is sufficient to provide considerable resistance VVto the movement of the boardsthrough the machine and, therefore, considerable edge to edge pressure is exerted by the feeding of the boards therethrough. In this way, the boards are maintained in intimate joint association and, at the same time, subjected to the heating effect from the stem pipes of the bed and pressure-bars so that by the time the boards pass out from the delivery end of the machine, the glue joints-have been firmly set. It is thus seen that so long as the boardsy are fed into the machine at the front end, a continuous ribbon of jointed boards or a continuous ribbon of material is fed out of the rear end of the machine.

On the outfeed side of the apparatus, I provide an outfeed table which consists of a plurality of spaced apart parallel supporting rails 59- supported on transversely extending beams 60- mounted between the two end members t'IV secured to or forming a part of the rear legs Il. In. order to cut the ribbon into desired lengths, I provide a travelling saw which travels longitudinally with the forward movement of the ribbon and also travels transversely to make its cut. To this end, the two side members 6I are provided with rearwardly extending rails 62 on the top of each of which is provided a track 63. Travelling on these tracks is a supporting frame comprising the two bottom members 64A having rollers 65 riding on the tracks, and a pair of transversely extending cross frames 66 and 61. These cross frames, on their tops, support longitudinally extending parallel' separate rails 68 which are coincident with' the' rails 59. The cutofi"v saw is mounted 'to move transversely on a guide rail member 69 which extends between the' two side rails 62; Mounted'to' slide on this guide railmember 69 isaA supporting U'shaped frame 18 on which is pivotally supported,` a's'at'1l; the

4saw supporting frame 12 carrying at its forward end ran electric motor 13.

The frame `lll is moved transversely of the ribbon of material through the medium of a driving -at the drawings, to the .far side of the glued ribbon, through the `medium of `a slide block 80 whichmoves with'the frame y'I but has a limited movement relatively thereto; This slide block is provided with a notch 8l in itsl upper face and a roller 82 rides on the upper face or. upper edge of the slide block. AS the frame 18 and its associated saw travels in a cutting direction, the roller 82 will ride on the raised portion of the slide block 88. However, as the saw unit approaches the opposite side of the wood ribbon, the slide block 88 will impinge upon theopposite end cross block 18 and be held stationary, although the saw continues to move for a short distance or until the roller 82 has dropped into the notch 8|. By the time that the roller has dropped into the notch 8|, thereby lowering the saw i4 below a cutting position, the feed screw 15 will have been reversed causing the saw carriage or frame 10 to travel in a reverse or return direction, the saw, however, remaining in its lowered position so that it will clear the stock. When the saw carriage reaches ythe limit of its return movement, the block 88 will strike the opposite cross or end member 18 permitting the carriage to travel while the block remains stationary. Accordingly, the roller 82 will ride up on the track until the saw is again in its elevated and cutting position.

The forward and reverse drive of the motor 18 which drives the screw 15 is controlled through themedium of a reversing switch 83 which is controlled by an operating arm 84. This arm is pivotally connected to a block 85 on a sliding rod 8B. The rod 88 carries an adjustable stop block 81 which, in turn, is adapted to be struck by a striker block 88 carried by and movable with the frame 18. A similar stop block 89 is carried at the opposite end of the rod 86. As the frame 10 travels in a cutting direction, being driven by the screw 15, |the striker block 88, travelling with the frame, will eventually strike the stop block 89 causing the stop block to move in the direction of travel of the saw frame 18 and thus moving the rod 88 to throw the switch 83 to reverse the direction of drive of the motor 18. Bearing in mind that the saw 14 has now dropped below the cutting level, the screw 15 will reverse the travel of the saw frame, bringing the same back to its initial position. As the saw frame returns to its initial position, the striker block 88 will strike the stop block 81, thus moving the rod 86 in its opposite direction and again reversing the drive of the motor, thus placing the motor 18 in a position to move the saw across the ribbon when the motor is again stanted.

The movement of the saw with the advance movement of the ribbon of material as the material is fed out of the machine is imparted through the medium of adjustable stops 88' which are mounted on rails 89 disposed between ithe cross members 81 of the frame 64.

which is secured to the rod 92 and which rests on a roller 96 carried on the motor 13. Thus, as long as the saw is in its elevated or cutting position, the ,rails 89 will be in their raised position with the stopsV B8' in a plane to be engaged by the materiales it is fed out of thevmachine. Therefore, as the material is fed out of the machine, the entire saw carrying frame mechanism will be advanced with the material and during the cutting movement of the saw. Due to the engagement of the material with the stops 88', as the material is fed forward, the carriage 84 will likewisecbe fedforward,` As soon, however, as the saw` has completed its i cutting movement,` as heretofore described, it, will be dropped below the cutting level and with the dropping of the saw below ,the `cutting level, the arms 98 and` 8l will be permitted to swing, lowering the rails 88' and accordingly lowering the stops88 to permit the cut-ofimaterial to pass off the machine and, due to the fact that the next succeeding edge of the material has not struck the stops 88', the frame can return to its initial position under the inuence of the weight 81 connected with the frame through the medium of a cable 88 which weight is raised by the movement of the frame 64 and thus biases the frame in its retracted position.

As soon as the frame returns to its initial position, the starting and stopping switch 88 will be struck by the frame opening the circuit of the motor 18 and thus causing the drive of the screw 15 to stop. As soon, however, as the edge of the feeding ribbon strikes the stops 88', which have been raised with the raising of the frame 12 and the frame commences to move the material, the

. switch 89 will move to closed position, starting the motor 18 causing the saw tomove across the material for cutting purpose.

It is to be noted that the motor 13 for driving the saw 14 is separate from the motor for driving the saw feed and during the operation of the machine, as long as it is desired to cut off panels of the desired length, the saw 14 can be run continuously. Any suitable switch mechanism, hand operated, may be used for starting and stopping the saw 14.

It is obvious that the stops 88 may be adjusted to any desired position and, therefore, the length of the panel to be cut off may be changed to meet the requirements. Furthermore, it is obvious that as long as material is being fed out of the machine, the same length of panel will be cut off by the saw automatically.

I claim as my invention:

l. In an apparatus of the character described, in combination, a flat bed comprising a plurality of flat horizontally disposed bed plates arranged closely adjacent one another'and forming a substantially continuous flat bed extending from side to side, heating elements in contact with and heating said plates, a plurality of longitudinally disposed presser bars vertically movable independently of one another, means for heating said bars, means for resiliently biasing said bars toward the, bed and reciprocating means for successively feeding boards be neath said presser bars, said presser bars and bed forming resilient clamping means for the boards fed therebetween to offer resistance rto the movement of the boards therethrough whereby,

as each board is fed to the machine, it will be forced against the preceding board to insure a tight junction between the edges of the adjacent boards.

2. In an apparatus of the character described, in combination, a flat bed comprising a plurality of `lat horizontally disposed bed plates arranged closely adjacent one another and form a substantially continuous bed extending from side to side and independently vertically adjustable, means for heating said plates, a plurality of longitudinally disposed presser bars vertically movable independently of one another, means for resiliently biasing said bars toward said bed plates, means for heating said bars and reciprocating means for successively feeding boards between said plates and bars, said plates and bars providing clamping means for maintaining the boards in position and offering resistance to the movement of the boards thereto whereby as each board is fed into the machine, it will be forced by the feeding means into close edge-to-edge abutment against the preceding board.

3. In an apparatus of the character described, in combination, a flat bed comprising a plurality of at longitudinally disposed bed plates arranged closely adjacent one another forming a continuous bed extendingfrom side to side and vertically adjustable independently of one another, means for heating said plates, a plurality of longitudinally disposed presser bars vertically movable independently of one another, means for vbiasing said bars toward said bed, heating means for said bars, means for simultaneously vertically adjusting said bars relatively to said bed and reciprocating means for successively feeding boards between said bars and plates.

4. In an apparatus of the character described, in combination, a nat bed, a plurality of at horizontally disposed bed plates arranged closely adjacent one another forming a continuous bed eX- tending from side to side and vertically adjustable independently of one another, means for heating said plates, a plurality of horizontally vdisposed presserbars disposed above said plates,

means for biasing said bars toward said plates, means for heating said bars, means for simultaneously vertically adjusting said bars relatively to said plates and so connected with said bars as to permit the vertical movement thereof, and reciprocating means for successively feeding boards between said bars and plates.

CLIFION C. FRAME.

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