US2037204A - Mold for type casting machines and the like - Google Patents

Description

mi! 14, 1936. I G. H. WHITE 2,037,204

MOLD FOR TYPE CASTING MACHINES AND THE LIKE Filed April 17, 1955 '7 Sheets-Sheet l Jforzzeys p i 1936- G. H. WHITE MOLD FOR TYPE CASTING MACHINES AND THE LIKE Filed April 17, 1935 7 Sheets-Sheet 2 April 14, 1936. e. H. WHITE MOLD FOR TYPE CA STING MACHINES AND THE LIKE Filed April 17, 1955 7 Sheets-Sheet 5 III" for

Q we ererz Z/zfa prifi 14, 1936. H wHlTE 2,037,204 MOLD FOR TYPE CASTING MACHINES AND THE LIKE 7 Sheets-Sheet 4 Filed April 17, 1955 I Bi 13 iz i a 4 C fnyeiezar J Z eazye ererz W22? W 1936' G. H. WHITE MOLD FOR T YPE CASTING MACHINES AND THE LIK 7 Sheets-Sheet 5 Filed April 17, 1935 G. H. WHITE April 14, 1936.

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, jizyezzz ar eoiy 6/1562? %ZZ% Filed April 1'7, 1935 E H H w H G MOLD FOR TYPE CASTING MACHINES AND THE LIKE Filed April 17, 1935 7 Sheets-Sheet 7 Patented Apr. 14, 1936 MOLD FOR TYPE CASTING MACHINES AND THE LIKE George Herbert White, Hartford, Conn., assignor to Chester A. Macomic, Chicago, Ill.

Application April 17, 1935, Serial No. 16,842

22 Claims,

My invention relates to improvements in molds for type casting machines and the like and has forone object to provide a new and improved form of mold which may be easily assembled and dismounted, may be easily and conveniently put in place and removed from the machine and which will furnish adequate opening whereby the slug or other member when cast may be released and easily removed. Other objects of my invention will appear from time to time throughout the specification and claims.

I have illustrated the invention in connection with a type casting machine, sufficient only of the machine being illustrated in detail to show the relation between the mold and the machine and its operation.

My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein:-

Figure 1 is a side elevation of the type casting machine;

Figure 2 is a side elevation on an enlarged scale of the mold and associated parts of the type casting machine with parts omitted;

Figure 3 is a plan view of the mold and associated type casting machine parts;

Figure 4 is a section along the line 44 of Figure 3;

Figure 5 is a section on an enlarged scale along the line 5 5 of Figure 3 with parts omitted.

Figure 6 is a section on an enlarged scale along the line G% of Figure 3;

Figure 7 is a section along the line of Figure 3 showing the mold about to open;

Figure 8 is a plan View of the mold in the open pos ion;

Figure 9 is a section along the line 9-9 of Figure 8;

Figure 10 is a section along the line I D-l0 of Figure 3;

Figure ll is a plan view of the wiper and ejector carliage;

Figure 12 is a partial plan view of the pressure bar and associated cams and drive members illus- J trating positive mfims for pushing the mold down after the casting is completed to release the slug from the matrices.

Figure 13 is a section along the line l3l3 of Figure 12;

Figure 14 is a diametric section taken substane tially on the line l4|4 of Figure 12;

Figure 15 is a side elevation of the ejector plate;

Figure 16 is a partial plan view of the mold illustrating a variant form of guide rail;

Like parts are indicated by like characters throughout the specification and drawings.

The type casting machine with which my mold is adapted to be used comprises generally a hori: zontal frame A, a vertical frame A-l and an inclined frame A-2. Mounted on the inclined frame is a typewriter shelf A3 which carries a typewriter A-.-4. The inclined frame A--2 contains a pattern mechanism controlled by the type-. writer whereby the position of. a plurality of matrix bars A is controlled so that these matrix bars which are moved back and forth by the cross head. A 6 controlled by link A'l, lever A-B, crank A -9 from a power transmission box Al0 may be properly selected and positioned so that the notches A--I I on the underside of the matrix strips, each notch containing a letter intaglio may be properly registered in line with the mold The details of this selecting mechanism form no part of the present invention and are therefore not illustrated in detail.

The matrix strips A5 travel on a matrix bed which is made up of anupper plate B and a lower plate B..l, the two plates being in alignment, the mold as will hereinafter appear, is located between the opposed edges of these two matrix bed elements. Normally or in thestarting position, the matrices are all supported in the plate B above the mold. For casting they are all moved down so that they rest partially on the plate B and partially on the plate 3-! and extend across the mold. In view of the fact that different types of matrices may be used and that it is frequently desirable to provide slugs of different length, the upwardly extending flanges B.--2 bounding the plate B have on their inner sides filler blocks B3 whose thickness they may be, tofill the entire area between the two flanges except for working clearance and preserve the matrix bars in general proper alignment, it being understood that the bars are sufficiently loosely mounted to permit independent action of the part of each bar. Pivoted on the plate B adjacent the lower ends of the flanges B-2 are spring arms B4 extending in general alignment with the flanges B2 and terminating in tapered filler blocks B-e5, each of which engage one of the opposed outer sides of the bank of matrix strips and cooperates with the side squeeze mechanism not here shown. These spring members and taper blocks when in the position shown in Figure 3 overlie the mold. When the mold is to be removed, they are rotated inwardly as indicated in dotted lines to clear the space between the plates B, Bl to permit convenient removal of the mold. Projecting inwardly from the opposed inner sides of the frame members A-l are brackets B6 having on their upper ends notches B'!. These brackets are bolted to the frame and may be adjusted in position. These brackets are located generally in line with and back of the lower extremity of the plate B. Also projecting in- 'wardly from the inner sides of the frame members A-l and bridging the gap between the lower edge of the plate B and the upper edge of the plate B-l are inwardly extending track members B8, these trackmembers terminating at their lower ends in downwardly displaced terminal members B9, the brackets with their notches and the track members providing a loose support and socketing arrangement for the mold itself.

The mold itself comprises two spaced end brackets C, C--l, joined at their lower ends by the stationary jaw C2 which is rigidly attached to the end brackets. Projecting outwardly from the upper ends of the end brackets C-l are pins C-2 which pins are adapted to engage the notches 3-1 in the brackets B6. Projecting outwardly from the lower ends of the end brackets C, Cl, adjacent the stationary jaw C2 are pins C4 adapted toengage the track B9.

The upper edge of the stationary jaw C--2 istapered as indicated and forms one side of the mold as indicated at C5. The opposite side of the mold is shown at C6 and is part of the sliding cross plate C-!. This sliding cross plate extends at its ends beneath the lower edges of the side plates C, C-l and carries at each end a screw held gib Cl0 interlocking with a rail CII on each side of the side plates C, C--l, the arrangement being such that it is possible for the plate C! to move toward and from the plate C-2 to open and close the mold. Of course, it will be understood that the upper wall of the 'mold is formed by the assembly 'of matrix strips.

The casting area of the mold is closed at the ends by sliding end blocks or end slides D, Dl,

. the plate C2 having two relatively narrow slots DZ in which relatively thin tapered ends D3 on these end slides may be socketed. Figure 3 shows them in the closed position. Figure 8 shows them in the withdrawn or open position.

. These end slides travel in relatively wide slots DM in the plate C'l being held in position therein by gibs D4. These slides extend rearwardly beyond the rear extremity of the plate C-I. D5 is a shaft mounted for rotation at each end in the plates C, Cl. This shaft carries two rock arms D-6 engaging slots Dl in the rear extremities of the blocks D, Dl and also carries eccentrics DI5 engaging removable bearing blocks D-8 socketed in extensions D--9 on the rear under edges of the plate C'I so that rotation of the shaft D5 will at the same time move the blocks D, Dl into and out of working position and move the plate C-l toward and from the jaw C2 thereby opening or closing the mold. The difference in movement of the blocks D, DI and plate C'l necessary to give a comparatively small movement to the plate 0-! and a relatively extended movement to the blocks D, Dl is accomplished by the diiferent radii of the lever arms and the eccentric. A lever D--| 0 projects rearwardly from the shaft D5 adjacent the outer side of the member C-l whereby by means which will hereinafter appear the shaft may be rotated. A lever D-l l projects from the opposed end of the shaft D5 adjacent the outer wall of the member C and is associated with a spring D-l2 anchored at the other end on a pin DI3 on the member C whereby the mold is normally held ,by the spring in the open position.

E is a wiper and ejector carriage. It is slotted on its upper face as at E-l to engage a fin E-Z on the underside'of the member C-2. It is held in position thereon by means of a gib E3 attached to the lower edge of the plate (3-2. A track strip E4 bolted to the underside of the plate C-I supports the other side of the ejector and wiper carriage, there being sufficient clearance to permit movement of the plate C1 and jaw C-2 toward and from one another without being interfered with by the ejector carriage. In the position of parts shown in Figure 3, it will be noted that the ejector carriage is to the right, The space between the jaw C.-2 and plate C'! is relieved so that the two mold plates may be in the working position without interfering with the upwardly extending ejector fin E5 which when ejection takes place is adapted to move toward the left toward the position shown in Figure 8, this fin being too wide to penetrate between the jaw C2 and plate C'l when the mold is in the locked position. This ejector carriage supports a wiping pad E6 which engages the underside of'the mold and is driven by a lever arm E1 slotted as at E8 to be engaged by the pln E9 on the wiper carriage. The means for reciprocating this lever are not illustrated in detail as they form no part of the present invention. Suffice it to say, that the movement of the cross head A6 moves a cam lever E-|IJ which causes this reciprocation in consonance with the operation of the remaining parts of the machine. For assembly, the ejector and wiper carriage is notched or slotted at El I. A latch E-l2 on the member C is adapted to engage this notch and lock the carriage in place at the left hand end of the mold. When the mold is dropped into this working position, however, the dog EI3 on this latch engages a stop plate El4 on the member A-I and the latch is rotated against the tension of the spring El5 out of engagement with the notch so that the ejector carriage is free to move but since it will aways be engaged by the latch when out of the machine, there is no danger of this carriage being slightly moved out of place inadvertently as a result of improper manipulation of the mold so that the roller stud on the carriage will always engage in the slot of the ejector arm or lever.

The underside of the mold is formed by the mouth piece F of the molten metal pot. This mouth piece is provided with one or more apertures F-l which when the mouth piece is pressed up against the underside of the mold will permit molten metal to be forced up through the passage F2 by any suitable means not here shown, into the mold. Figure 2 shows the mold in' the closed position. The pot moves back and forth along a line perpendicular to the plane of the matrix bed. The pot itself is shown diagrammatically at F-3. It is forced up by the push rod F4 engaged by the lever F5, which lever is moved by the cam F-6 to force the pot up. The pot first engages the underside of the mold when it is generally in the position shown in Figure '7, pushes the mold up, lifting the pins m es the. mold and, brings it into engagement 0-41 off: thetrack and rotating themoldaboutithe pins (3-3 to bring the upper side of the mold into engagement with thev underside \of the matrix strips. The pressure bar- F-l; above th matrix strips, theoperation of whichv and details of which are not here shown,,forms an abut,- ment against which the pot may squeeze, the mold and the matrix strips. The upward movement of the pot at the same time carriesv the mold operating link F8 upward. This link is pivoted on the pot and the spring F9. tends to. rotate the link in a clockwise direction, so that; the notch Fl'0 in the link is held in engagement with the pin FH on the lever D--l,ll. Thus the upward movement of the pot at the sametime rotates the shaft D to close the mold. Suitable means not here shown force the molten metal up into the mold when this closure has been completed. Then after the metal has hardened, the pot is withdrawn. This downward withdrawal of the pot first disengages the mold from the matrices bringing it into the position shown in Figure '7. Owing to the length of the slot F-IO the mold is not opened at first but further movement; of the pot and pot mouth breaks the bond between the pot mouth and the underside of the mold and at the same time rotates the lever D-I-D in a clockwise direction, withdrawing the end slides from the mold, separating the mold jaws and leaving the slug loosely held in the mold. Then the ejector carriage and wiper travels across the mold and forces the slug out when the cycle may be repeated. It will be understood that the cam F5 is driven from the transmission box A-l 0 in a unison with the crank A9.

Alongside the lever E-'! is shown a wiper pad G which is pressed down against the mouth of the pot by the supporting arm G-I whereby the mouth of the pot which is subsequently to engage the mold may be wiped to avoid deposit of metal thereon.

Supported on the upper end of the vertical frame AI is a pressure bar H. This cross member overlies the mold. Pins H--l are slidably mounted in the cross member and engage the members 0 and C-l of the mold. The pins are provided with heads. 1-1-2 to limit their downward movement. Parallel with the pressure bar H is a second cross member H-3 flanged at H-4 where it engages the frame Al. A shaft I-I5 is supported at either end on bearings on the flanges H-4 and carries cams H--6. These cams are engaged by rollers H! on rocker arms H--8 pivoted on the flanges H -4. The opposed ends of these rocker arms have adjustably thread ed push pins H9 abutting against the heads H-Z and are provided with lock nuts H?l0. The shaft II-5 is rotated in unison with the other mechanism by means of the gear H-.ll in mesh with the gear I-Il2, which gear is driven by a chain H-|3 passing over a sprocket not shown, the chain being driven by a sprocket H-.-I 4 on the cam shaft 1-1-45 so that before the mold is opened up after the pot has been withdrawn, the cam forces the mold away from the matrix thereby insuring that whatever adhesion there may be between the matrix and the slug will be broken before the matrix strips are released.

Because the mold is supported for a limited pivotal movement and because when the mouth of the pot is out of engagement with the mold, the mold swings down away from the matrix strips, it is necessary to provide means taking the form of the adjustable brackets to position the pivot of the mold so that. when the pot moves up,

with the,- matrix strips, The mold face where it engages the matrix strips will be in the same lane as; the matrix strips, as otherwise leakage would take place between the mouth of the pot and one or other side of the mold.

Because, the mold is a part that frequently requires replacement, either on account of the necessity of making adjustments or repair or on account. of the necessity of using different types of moldsfyjor different, types of slugs, or for cleanit is necessary to make the mounting of the mold onefromwhichthe mold can be easily withdrawn and to which it can easily be returned. The track; and slotted bracket combination accomplishes this purpose. The operator working from above lowers the mold as a unit in a generally vertical path until the lower pins rest on the track. They travel down, this track, being guided into posit-ion thereby. When the upper pins are in v register with the slotsi-n the brackets, they may be dropped in and those slots Will hold the mold against further movement down along the track.

In Figures-1,5 to 18, are shown in part modification. of specific details of the mold structure. is a pad to engage the pins C-4, the pad having a raised portionv II]! tocenter the mold as shown in Figure 16. In Figure 17, the unlocking action of the. mold is more clearly shown than it is in Figure 6,. by the omission of parts. In Figure 18 a modification is shown based on Figure 10 which shows the pads. l 0l as a substitute for the side thrust pins and shows a slightly different arrangement of the track itself. It also shows the additional pins H12 threaded in the support Al for the purpose of Supporting the movable jaw (2-4. In Figure 15 is shown a detail of the wiper E6 with supporting spring {04 resting on the w per c rria e I claim:

1, A mold for type casting machines and the like comprising two opposed parallel plates, means for mOYing them toward and from one another along parallel lines, an ejector carriage mounted for slidable movement. upon both of them independentof their relative movement along a line perpendicular to their line of movement.

2. A mold for type casting machines and the like comprising two opposed parallel plates, means for moving them toward and from one another along parallel lines, an ejector carriage mounted forslidable movement upon both of them independent of their relative movement along a line perpendicular to their line of movement, a support upon which the mold is removably mounted and automatic means for latching the ejector carriage in position at one end of its excursion when the mold is removed from its mount, said means being automatically disengaged when the mold is in working position.

3. A casting machine including a movable matrix, a mold associated therewith, two pairs of supporting pins projecting from said mold, tracks along which one pair of pins may travel, sockete-d brackets adapted to pivotally support the other pair of pins whereby the mold may be loosely supported for removal and alignment.

4. A casting machine comprising a movable matrix, a mold associated therewith, two pairs of supporting pins projecting from said mold, tracks along which one pair of pins may travel, socketed brackets adapted to pivotally support the other pair of pins whereby the mold may be loosely supported for removal, means for positioning the matrix in register with the mold, means for forcing till] the mold upwardly against the matrix, to liftone pair of pins away from the tracks, and rotatethe mold about the other pair of pins. 1

5. In a casting machine, a mold having a pair of opposed side wall members movable toward and from one another, means slidable in said side wall members and moving at a more rapid rate for closing the ends of the mold. r

6. In a casting machine almold having a pai of opposed side wall members-movable toward and from one another, means slidable in said side wall members and moving at a more rapid rate for closing the ends of the mold, a spout adapted to close one side of the mold and to be moved toward and from it, and means movable in consonance with the spout for displacing the side wall forming and the end closing members.

7. In a casting machine, a mold having a pair of opposed side wall members movable toward and from one another, means slidable in said side wall members and moving at a more rapid rate for closing the ends of the mold, a'spout adapted to close one side of the mold and to be moved toward and from it, and means movable in consonance with the spout for displacing the side wall forming and the end closing members, said means comprising a pivoted link longitudinally movable with the spout, the link being slotted, a rotating shaft and lever having a pin engaging said sl-ot whereby delayed action of the wall forming and end closing members is accomplished.

8. A mold for type casting machines and the like comprising two end brackets, a stationary jaw rigidly attached to them, a movable jaw slidable on them toward and from the fixed jaw, the jaws being transversely grooved, end blocks slidably mounted in said grooves to close the ends of the space between the jaws.

9. A mold for type casting machines and the like comprising two end brackets, a stationary jaw rigidly attached to them, a movable jaw slidable on them toward and from the fixed jaw, the jaws being transversely grooved, end blocks slidably mounted in said grooves to close the ends of the space between the jaws, a shaft mounted for rotation on the end brackets, an eccentric drive connection between it and the slidable jaw and a lever drive connection between it and the end blocks.

10. A mold for type casting machines and the like comprising twoend brackets, a stationary jaw attached to them, a movable jaw slidable on them toward and from the fixed jaw, the jaws being transversely grooved, end blocks slidably mounted in said grooves to close the ends of the space between the jaws, a shaft mounted for rotation on the end brackets, an eccentric drive con.- nection between it and the slidable jaws and a lever drive connection between it and the end blocks, a lever on one end of the shaft, yielding means interposed between it and the adjacent side plate, tending to rotate the lever in such position as to open the mold, a driving lever on the other end of the shaft and means for rotating it.

11. In a mold for type casting machines and the like, two opposed plates mounted for movement toward and from one another, a plurality of relatively wide slots in one, which slots extend clear through the plate on its edge adjacent the other, relatively narrow slots extending clear through the opposed plate in opposition to the slots in the first one, end blocks mounted in the wide slots, each block having an extension adapted to project into the narrow slot on the opposed plate to close the ends of the mold chamber between the two plates.

12. In a mold for type casting machines and the like, two opposed plates mounted for movement toward and from one another, a plurality of relatively wide slots in one, which slots extend clear through the plate on its edge adjacent the other, relatively narrow slots extending clear through the opposed plate in opposition to the slots in the first one, end blocks mounted in the wide slots, each block having an extension adapted to project into the narrow slot on the opposed plate to close the ends of the mold chamber between the two plates, means for moving said blocks at a more rapid rate than the rate of movement of the plates whereby as the plates are drawn together, the end blocks bridge the gap between them and are in firm engagement with each and when the plates are moved apart the end blocks are withdrawn to leave an unobstructed opening between the plates.

13. A mold for type casting machines and the like, comprising two plates movable toward and from one another along parallel lines, the plates being thicker than the mold cavity formed between them and cut away along diagonal lines therefrom, an ejector carriage mounted for movement on the undersides of the plates in the mold cavity and the area cut away from the plates.

14. A mold for type casting machines and the like, comprising twoplates movable toward and from one another along parallel lines, the plates being thicker than the mold cavity formed between them and cut away along diagonal lines therefrom, an ejector carriage mounted for movement on the undersides of the plates in the mold cavity and the area cut away from the plates, guide means on one of the plates for the ejector carriage adapted to constrain it for parallel movement.

15. A mold for type casting machines and the like, comprising two plates movable toward and from one another along parallel lines, the plates being thicker than the mold cavity formed between them and cut away along diagonal lines therefrom, an ejector carriage mounted for movement on the undersides of the plates in the mold cavity and the area cut away from the plates, guide means on one of the plates for the ejector carriage adapted to constrain it for parallel movement, a track on the other plate along which the ejector carriage travels, the track being movable with the plate and with respect to said carriage in a direction perpendicular to the path of movement of the carriage.

16. A mold for type casting machines and the like comprising two opposed parallel plates, means for giving them relative movement toward and from one another in a fixed plane, ejector means adapted to travel longitudinally between them when they are separated, end blocks adapted to be moved intoand out of working position to close the space between them, the end blocks being adapted to be withdrawn to permit movement of the ejector.

17. A mold for type casting machines and the like comprising two opposed parallel plates, means for giving them relative movement toward and from one another in a fixed plane, ejector means adapted to travel longitudinally between them when they are separated, end blocks adapted to be moved into and out of Working position to close the space between them, the end blocks being adapted to be withdrawn to permit movement of the ejector, the distance between the plates when in their position of closest approach being at one end beyond the end blocks sufficient to avoid interference with the ejector means.

18. A mold for type casting machines and the like comprising two side plates, a cross plate rigidly attached to them, a cross plate slidable on the side plates toward and from the fixed plate, end blocks slidably mounted on the sliding plate, the fixed plate being recessed to receive them, means for simultaneously moving the slidable plate toward and from the fixed plate and the end blocks toward and from the fixed plate to cause them to penetrate the recesses therein, such means being adapted to give the end blocks a longer travel than the travel of the slide plate.

19. In a type casting machine, a mold, a spout adapted to convey molten metal to the mold and to bound one side of the mold and a matrix member adapted to bound the other side of the mold in opposition to the spout, means for moving the matrix member into and out of register with the mold, means responsive to the movement of the spout for opening and closing the mold, means for loosely supporting the mold whereby the spout may move the mold into and out of working relation with the matrix.

20. In a type casting machine, a mold, a spout adapted to convey molten metalto the mold and to bound one side of the mold and a matrix member adapted to bound the other side of the mold in opposition to the spout, means for moving the matrix member into and out of register with the mold, means responsive to the movement of the spout for opening and closing the mold, means for loosely supporting the mold whereby the spout may move the mold into and out of working relation with the matrix, the mold being adapted for removal from its loose support when the matrix has been withdrawn.

21. In a casting machine and the like, a re-v movable mold, pins projecting from opposed sides thereof, spaced tracks along which one opposed pair of pins are adapted to travel, spaced apertured brackets in which another opposed pair of pins are adapted to be socketed whereby the mold may be moved downwardly engaging the track and then to be caused to engage the bracket to hold the mold in place.

22. In a type casting machine, a mold, a spout adapted to convey molten metal to the mold and to bound one side of the mold and a matrix member adapted to bound the other side of the mold in opposition to the spout, means for moving the matrix member into and out of register with the mold, means responsive to the movement of the spout for opening and closing the mold, means for loosely supporting the mold

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