US1887307A - Scoring and trimming machine - Google Patents

Description

Nov. 8, 1932. c. E. IVES 1,387,307

SCORING AND TRIMMING MACHINE Filed on. 16, 1930 s Sheets-Sheet 1 INVENTOR CLIFFOEDE /l/E6.

ATTORNEY Nov. 8, 1932. c, E, E 1,887,307

SCORING AND TRIMMING MACHINE Filed Oct. 16, 1950 5 Sheets-Shet 2 ATTORNEY Nov. 8, 1932. v Q E WE I 1,887,307

SCORING AND TRI MMING MACHINE Filed Oct. 16. 1930 5 Sheets-Sheet 5 Fir::-ii

INVENTOR CUFF-0E0 E. /VE5- ATTORNEY Patented Nov. 8, 1932 UNITED STATES PATENT OFFICE CLIFFORD E; IVES, OF WILMET'IE, ILLINOIS, ASSIGNOB' 'IO UNITED STATES GYPSUM COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS SCORING AND TBLIMHING MACHINE Application filed October 18Q 1880. Serial No. 489,049.-

This invention relates to a scoring and trimming machine and has reference more particularly to machines of the type used in the manufacture of psum board. In the manufacture o gypsum board, such as square edge wallboard, it is customary to form score marks where the paper is to be folded about the cementitious core material which is composed usually mainly of g sum, so that sharper edges will result. These scoring devices have usually consisted of carborundum wheels rotated at a high speed from a common counter shaft and with sharpened edges engaging the board to produce the score marks. These carborundum wheels need frequent sharpening and truing up so as to produce score marks of the desired depth, and so'that both edges of the board will be similar and so that the edges will not be in or out due to improper depth ofscore marks. At times the stones break endangering the lives of workmen. The carborundum stones also frequently require replacement when the diameter is reduced to a given amount.

An object of this invention, therefore, is to produce a scoring devicewhich may be readily adjusted and in which the scoring wheels are individually motor driven.

Another obect of the invention is to produce a scoring device which will remain in adjustment for long periods of operation of the board making machine, so as to produce boards of uniform quality. A further object of the invention is to provide a scoring device which will be self-sharp and the scoring device itself; also to improve scoring devices in other respects hereinafter speclfiedand claimed. i i I Reference is tofbe had to the accompanying drawings forming a part of this specification, in which Fig. 1 is a lan view of a board machine with a pair 0 my improved scoring devices in EQSltlOIl, v,

ig. 2 is an elevation of the scoring device with parts removed to disclose the construc- I tion, Y

Fig. 3 is a sectional elevation on line 3--3 of Fig. 2 showing the speed reducing gearin% associated with the scoring device,

ig. 4 is an elevation of the scoring device to with parts broken away to disclose the construction,

Fig. 5 is a fragmentary enlarged view of one of the scoring .saws,

Fig. 6 is a sectional elevation through the saw taken on the line 6-6 of Fig. 5,

Fig. 7 is a fragmentary sectional view of one edge of a wall board manufactured by the practice of scoring,

Fig. 8 is a sectional elevation of the lower support rolls for the scoring saws,

Fig. 9 is a sectional view of a modified form of wall board edge,

Fi 10 is a sectional elevation of the scoraing evice for making the wall board edge shown in Fig. 9.

Fig. 11 is a sectional elevation taken on line 1111 of Fig. 8, and

Fig. 12 is a sectional elevation taken on line 1212 of Fig. 10.

In a board making machine, it is customary to rovide a table 15 over which continually sli es a continuous sheet of paper 16.

The edges of the paper strip or sheet of other material 16 are scored to form score 35 marks 17 and 18, so that the said edges of the board may be folded upwardly to form a fold 19 and inwardly to form a fold 20, said fold inclosing a central core material 21 of cementitious material which ordinarily is composed mainly of gypsum; Before the setting of the [plane of the upper surface of'thepaper cover sheet22. i

. Instead of the arbon-team" wh els 6 01- narily used forproducing the score marks 17 .and 18,I1provideilnproved saws 25, which are in the form of circular discs. Each of said saws has a concentric central opening 26 for receiving a drive shaft 27, said saw being keyed onto the drive shaft 27, by a suitable key engaging a keyway 28,formed in each saw adjacent to central opening 26. Teeth 29 are formed around the periphery of the saw 25, each of said teeth being formed by cutting right angled peripheral, radially extending slots 29a in the saw disc so as to provide a semi-circular cutting face 30. The saw tooth, therefore, has the outline shown in Fig. 6, and it will be obvious that if the cutting edge on one side of the teeth becomes worn, the saw is turned around on the shaft, so that the opposite cutting edge of the tooth comes into 0 eration. In this way, b frequently reversing the saws, the latter become selfsharpening and the saw has along, life until the saw teeth become worn down to the base thereof. These saws are preferablyof a high carbon, heat-treated steel which is suitable for-producing cutting edges having a high wear resistance. One or more of the saws 25 are retained on the shaft 27 by suitable spacing collars 32, and are clamped together by nut 33 which is held in place by lock nut 34.

The shaft 27 is preferably rotatably-supported in ball bearings 36 and 37 mounted in the outer wall 38 and inner wall 39 respectively of a suitable gear case for holding speed reduction gearing. Suitable bolts 40 pass through the walls 38 and 39 of the gear case and engage the frame 41 of an electric motor which is preferably dust-tight. Motor 41 is provided with a central shaft 42, a drive pinion 43 being ri idly secured to said shaft 42 by a key 444 saw'shaft 27'by a key'46. A gear 47 is mounted upon a shaft 48 and meshes with the pinion 45, and also with a pinion 50 secured to a shaft 51 by means of a key 52. A gear 53 is also secured to the shaft 51 and meshes with the pinion 43; The countershaft 51 acts as a speed reducer and the idler shaft 48 acts to change the direction of rotation of the saw shaft 27. The shafts 48 and 51 are mounted in suitable ball bearin 55 and 56 respectively contained in the walls of the gear case. Suitable packing rin maybe rovided around the sha ts, such as t e rings 5 around the saw shaft 27, so as to prevent leakage of grease, and sothat grease may be kept in the gear case to provide suitable lubrication for the gears contained therein. .8 A supporting bracket 59 is sucured to the motor frame 4l by means of screws 60, said bracket having outstanding concentric bearings 60a and 61 for receiving a horizontally extending adjusting screw 62, The bearing.

61 is threaded internally to receive a threaded .section "63 formed on the screw .62, and the extreme end of rod 62 beyond the threaded section 63 is provided with an annular p1n1on 45 issecured to the is provided with a The screw 62 is rotatably received at its opposite end by the bearing 60a, and by an upstanding flange 70 formed on the table bracket 66. An adjusting nut 71 is secured to the outermost end of screw 62 adjacent flange 70, by means of a pin 72, and said nut 71 is provided with a knurled annular section 73 for manual engagement. The table bracket 66 is secured to the table 15 by screws 74 having knurled heads 75, and are also provided with annular shoulder 76 to prevent the misplacement of the bolts when the motor and associated scoring devices are removed from the table 15. A sleeve 77 may be provided around the screw 62 between the bearings 60a and 61, and said sleevemay be chromium plated to improve the appearance and to protect threads from stucco. A coil spring 78 may also be provided on screw 62 between the flange 65 and bearing 61, so as to take up any possible play in the threads 63 and thus give accurate positioning of the saws 25 laterally relative to the edges of the paper sheet 16.

It will be noted that the bracket 59 'has a pivotal engagement with the screw 62 so that the vertical position (if the motor frame 41 and the scoring saws 125 may be accurately adjusted to give the proper depth of score marks.

This vertical adjustment of the saws 25 is accomplished by means of an adjusting screw 80 which is rotatably supported at its upper end in a pair of split flanges 81 formed -on the gear case wall 39, these flanges being lower end of the screw 80 has a threaded section- 83 which engages an internally threaded opening in an outstanding flange 84 formed on the lower side of the gear case wall 39. The extreme lower end of the screw 80 rests upon the table 15 and supports the weight of the motor and attached mechanism jointly. with the screw 62. The u per end of the screw 80 urled' adjusting head 86 having an annular calibrated section 87 on its lower face; An upstanding flange 88 is formed on-the gear case and has a score mark registering with the calibration on the section 87, so as to provide a micrometer adjustment for accurately adjusting the screw 80. It will thus be seen that by rotating the head 86,the exact depth of score marks made by the saws 25 is accurately adjusted to give the desired results.

An elongated-slot 90 is formed transversely in the table 15, and a shaft 91 is rotatably mounted longitudinally and below the slot 90, being supported by roller bearings 92 and downstanding flanges 93 suspended from the lower part of the table 15 adjacent said slot 90. One or more rollers 94 and 95 are secured to the shaft 91 by feather keys 96 operating in a keyway 97 formed longitudinally the length of the shaft 91. Set screws 98 bear at their inner ends on the keys 96 so as to lock the rollers 94 and 95 in the desired position longitudinally of the shaft 91. The purpose of having a plurality of rollers on the shaft 91 is to permit making boards of different widths on the same machine by moving the entire motor frame 41, and its attached mechanisms, transversely on the table 15.- .A plurality of holes for the screws 74 are provided in the table 15 so as to permit the scoring device to be moved transversely on the table 15 until the scoring saws 25 are positioned above the outer roller 95 or the inner roller 94, de-

pending upon the width of board to be manufactured. The rollers 94 and 95 provide an anti-friction surface for pressing the paper against the scoring saws 25. 1

Under certain circumstances, it is desirable to make a board having a folded edge of the type shown in Fig. 9, in which both the lower cover sheet 100 and the upper cover sheet 101 are scored with score marks 102 and 103 respectively. For this type of board', it is also desirable that the edge 104 of the lower cover sheet 100 be trimmedat the time of manufacture to a width equal to the thickness of the board. One edge of the upper cover sheet 101 outside the score mark 103 has a chamfered surface 102 so that a feather edge is provided which is secured by a layer of adhesive 105 to the fold 106 on the lower cover sheet 100.

In order to accomplish this combined trimming and scoring operation on the lower cover sheet 100, I provide a trimming knife 107 having a sharp, annular trimming-edge 108, this knife being substituted instead of one of the scoring saws shown in Fig. 4. A shaft 91 is rotatably mounted in ball bearings 92,, which are retained in downwardly extending flanges 109 secured to the bottom of table 15 adjacent an elongated 'slot 90 formed in said table. A roller 110 is mounted upon the shaft 91 and is slidablysecured thereon by a feather key 111 which is mounted in a keyway 97 formed longitudinally of said shaft. The feather key 111 has a lug 112 formed on one end, so as to limit the sliding movement of the roller 110 to the left as seen in Fig. 10 under the action of a coil spring 113 placed around the shaft 91,. The spring 113 is retained between an annular collar 114 formed on the roller 110, and a col- .107 for one of the saws 25.

lar 115 also mounted upon the shaft 91, and rigidly secured thereto by means of a set screw 116 bearing against one end of the 1 feather key 111. The collar 115 is provided with an integral sleeve 117 enclosing the.

spring 113 and slidably and loosely telescoping over the annular shoulder 114 so as to from a spring cylinder for said spring. Key

111 has a recess 118 formed in its outer surface so as to provide clearance for the spring 113. i I

When the trimming knife 107 is lifted away from the edge of roller 110, said roller moves axially to the left under the action of spring 113 as seen in Fig. 10. lVhcn it is desired to return the roller 110 to the righthand position so as to resume trimming 0 erations, a rod 120 is moved axially to the right by manual actuation of a pressure head 121 formed on one end of said rod. A collar 122 is secured to the rod 120 by set screw 123 having an adjustin wing head 124. The collar 122 engages t e outer portion of the roller 110 so as to move said roller to the right when the rod 120 is moved to the right. The rod 120 passes loosely through an opening 125 formed in a frame 126, the latter be ing secured to the under face of the table 15- by means of a bolt 127. A coil spring 128 is retained between one of the downstanding flanges 109 and the pressure head 121, so as to normally urge the rod 120 to the left until said movement is limited by a stop pin 129 engaging the opposite flange 109.

In operation, the motor frame 41 is pivotally supported upon the screw 62, which in turn is supported upon flanges 65 and formed upon the bracket 66. The microm eter adjusting screw extends downwardly through flanges 81 and 84 formed on the gear case, and its lower end rests upon the table 15 so that by rotation of said screw 80, the depth of score marks made by the scoring saws 25 is accurately adjusted. The position of the scoring saws 25 laterally of the sheet of paper 16 is accurately adjusted by rotating the screw 62, which moves the bracket 59 and motor frame 41 axially between the flanges 65 and 70 against the action of spring 78. The saws 25 are secured on the saw shaft 27 by means of nuts 33, 34 and collars 32. This.

.95. In the device shown in Figs. 10 and 12,

a combined trimming and scoring action is obtained by substituting the trimming knife This knife 107 bears against the edge of the pressure roller 110, and when the knife 107 is lifted upwardly, roller 110 moves to the left until its movement is limited by lug 112 on feather key 111.

-. ,,rotatably supported below said strip of ma To move roller 110 to the right, as seen in Fig. 10, pressure is applied manually to the head 121, so that collar 122 engages the roller 110 to give it the desired right-hand movement, after which rod l'20jmoves to the left under the action of spring 128 until its movement is limited by stop pin 129 engaging flange 109.

I would state in conclusion that while the illustrated examples consitute a practical emof the teeth to the sheet to he scored. Y 2. In a scoring device a motor, a shaft otatably associated wit said motor and ada ed to be rotated thereby, a trimming kni e and a. scoring saw secured to said shaft,

and means for moving a strip of material adjacent said shaft so as to be operated on by said knife and saw.

3. In a strip treating apparatus, a table for supporting a moving strip of material to be treated, a motor supported by said table, a shaftrotatably associated with said-motor, a trimming knife and a scoring saw secured to said shaft so as to operate upon 'said strip of material, and a roller shaft rotatably associated with said table below 'said strip of material andadapted to coopcrate with the trimmin knife and scoring saw to accomplish the trimming and scoring of said strip of material. p

4. In an apparatus for operating upon strip material, a table, a motor. supported by said table, a shaft rotatably associated with said motor, a trimming knife and a scoringsaw mounted upon said shaft so as to operate upon said strip of material, a roller.

. rotatably mounted below said strip of material and adapted to cooperatewith said trimmng knife and scoring saw, means for resiliently pressing said roller against the edge of said trimming knife and for moving said roller-into an inoperative position, and manrestoring 581d. roller to operaual means for tive osition.

'5. n a strip operating device, a shaft having a trimming knife and a scoring saw secured thereto, a table located below said shaft and adapted to support a continuous strip of material to be trimmed and scored, a roller rising adisc having terial so as to press said material against said scoring saw, resilient means for pressing said roller a ainst said knife, and a manually operate? rod for moving said roller axially.

6. A scoring device comprising a motor frame, means for pivotally supporting said motor frame on a substantially horizontal axis, means for adjusting said motor frame about its. pivot comprising an adjustment element supporting a portion of the weight of said motor frame and the motor carried thereby independently of the pivotal support, and scoring saws operatively associated with said motor and movable therewith.

7. In a scoring device, a motor frame and a horizontally pivoted support bracket, a

table substantially supporting said motor frame through said bracket and adapted to support a moving sheet of material tobe, scored, scoring saws operatively associated with said motor so as to form score marks in said sheet of material, and means associated with said bracket for laterally adjusting said motor frame and scoring saws transversely of the moving strip of material.

8. In a scoring device, a table for supporting a movingstrip of material to be scored, a motor frame pivotally mounted upolisaid table on an axis transverse of the strip of material, scoring saws operatively associated w th said motor frame, means for adjusting said motor frame and saws vertically relative to said moving strip of mat an ad ustment element connected with said motor frame and supporting a substantial portion of the weight thereof, and means as-' sociated with said motor frame for adjusting the saws laterally relative to said moving strip of material. i

9; A scoring saw comprising a disc having peripheral substantially radially extending slots formed therein to provide teeth around the edge of said saw, said saw being selfsharpening upon'reversal so as to present the opposite cutting edges of the teeth to the sheet to be scored.

' 10. In a scoring device, means for actuating the scoring element, and

erial comprising a scoring element.

means for directing material to be scored under said scoring element, said scoring element comprising a metal scoring disc having peripheral substantially right angled radial- 1y extending slots formed in the edge thereof so as to provide cuttingteeth along the edge ofsaid disc.

, 11., In a -scoring device,'a scoring element,

means for actuating the scoring element, and

means for directing material to be scored under said scoring element, said scoring element comprising a high carbon, heat-treated steel scoring disc having peripheral substantially right angled radially extending slots formed in the edge thereof so as to provide cutting teeth along the edge of said disc.

12. In a scoring device, a motor, a shaft rotatably associated with said motor, a trimming knife and scoring saw secured to said shaft, means for moving a strip of material adjacent said shaft so as to be operated on by said knife and saw, and means for adjusting said motor and shaft as the dimen-' sions of the material are varied.

13. In a scoring device, a table for supporting a moving strip of material to be scored, a motor frame supported on said table, scoring saws operatively associated with said motor frame, means for adjusting said motor frame and saws transversely of the strip of material, and means under the scoring saws and pressing the strip of material against the saws, said means comprising a roller keyed to a freely rotatable shaft and adjustable transversely of the strip of material independently of said motor frame.

14. In a scoring device, a motor, a gear box secured to the motor, a pivoted bracket partially supporting said motor upon a table, a shaft rotatably mounted in said gear box and adapted to be rotated by the motor, said table being adapted to support a continuous strip of material to be scored, scoring saws on said shaft adapted to engage said strip of material to produce score marks thereon, and means associated with said gear box adapted, together with said bracket, to support said motor and gear boX on said table, and being manually operable to raise or lower said saws with relation to the strip of material being operated upon.

15. In a scoring device, a motor frame, a pivoted bracket supporting said motor frame upon .a table, said table being adapted to support material to be scored, scoring saws operatively associated with said motor so as to form score marks in said material, and means forming the pivot of said bracket and manually operable to adjust said motorframe and-said scoring saws. laterally of the material to be scored.

16. In a scoring device, a motor frame, a

ing saws, a shaft mounted longitudinally below said slot, and a roller on said shaft to provide anti-friction surface for pressing the material to be scored against the scoring saws.

CLIFFORD E. IVES.

pivoted bracket supporting said motor frame upe' a table, said table being adapted to support material to be scored, scoring saws operatively associated with said motor so as to form score marks in said material, means forming the pivot of said bracket and manually operable to adjust said motor frame and said scoring saws laterally of the material to be scored, and means for securing said bracket in different positions across said table transversely with relation to the material to be scored as the transverse dimensions of the material are changed,

17. The combination with a scoring device comprising a motor and scoring saws rotatably associated therewith, of atable support mg said motor and saws and the material to be scored, a slot in said table under the scor-

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