US1877544A - Casting machine - Google Patents

Description

Sept. 13, 1932. `v s. WILUAMS CASTING MACHINE 4Filed Feb. 5;, 1951 2 Sheets-shew 1 Sept. 13, 1932. v. s. WILLIAMS CASTING MACHINE 2 Sh eets-Shet 2 Filed Feb. 5, 1951 Patented Sept. 13, 1932 ori-fer,A

vIcToR STANLEY WILLIAMS, or LoNDoN,.ENGLANn f CASTING MACHINE Application filed February 5, 1931, Serial No; 513,736; and; in Greatv Britain February 19, 1930.'

This invention relates to improvements in casting machines and is more especiallyconcerned with machines for casting stereo.-

types,but the inventionv isapplicable to,` other 5 casting machines.

One object of the inventioni istoprovde a` simple machine whereby duplicate castings can be made expeditiously and with very little attentiony on the part of an operative.

According to one feature of the present invention in a casting machine comprising a composite mould, whereof one of the mould parts is movable in a direction substantially normal to the other mould` part to open or close the mould, an'operating member; is lprovided for moving said movable: mould part towards or away fromztheother mould part,

and the movable mould part is mounted on this operating member so aste have freedom of movement in all directions relatively to the other'mould part:

Another feature of the invention consists in the provision of a resilient connection between the aforesaidv operatingaA member and the mould part carriedtherebyn;

According to yet anotherfeaturefof theinfvention, the said movable mould partl may comprise a self-adjusting.l seating forv the Hong or other matrix;

Mounting the movable'mouldy partaforesaid on an operating-member in the-way described above enablestbetterv castings to be produced thanheretofore because a correct seating of one mould part on thefother'and'an equalization of the pressureoverf'thecontiguous surfaces of the mould parts-isthereby ensured. This advantage isrenhancedif the aforesaid resilient mountingf is providedbetween the operatingfmember and the-mould part mounted thereon. Further the selfadjusting seatingfor the matrix is free'to tilt so as properly` to vsupport the matrix andresist the pressure exerted thereon by` the :metal as it is admitted into the 'moulds In a Convenient construction according'to the inventionl for casting; stereotypes the said movable mould part is made in twofsections whereoff oneisV movablyE 4mountedi'on the otherto permit 'theinsertion `of a'flong or other matrix between them, and means is provided forclamping together the matrix and the two sections of the mould part.

For a complete understanding of the invention one embodiment thereof for casting stereotypes will now be described, by way of e5 example, with reference to the accompanying drawings, in which Figure l is a' front elevation of the machine, l

VFigure Qiis a section on the line 2-2` of @El Figure l,

Figure 3 is an elevation of the aforesaid movable'mould part,

Figure 4i is a plan off said mouldpart, and

Figure 5f is a section on the line l5 5 of @5 Figure 4; Y

Like reference numerals indicate like parts throughout' the drawings, which are more or less ofV a diagrammatic character.

The complete casting machine vcomprises 78 known or convenient mechanismv for delivering intermittently molten metal-'from am eltingl pot or other container to a. nozzleL 10 shown in chainlines-in Figure 2 wherefrom the mould is charged. Attached tothe nozzle by means of;` a'universalljoint is a nozzle plate ll against which themould abutsduring ther-casting operation in the usual manner. v

The mould is a composite mould compris- 80 ing two main parts whereof one is a segmental-shaped mould part 58 which is fixed by` a screw 8f3-to a shaft 86 mounted in bearings in the machine frame.l This mouldl part 58, if desired, may be made-hollow'and be 85 water-cooled. Thevv cooperating mould part is made" inr two sections, whereof Aone isa saddle piece 87- whichstraddles the other section88', two shoulders 89 being provided on the section88 to providese'atings for the 4side 9G limbs of`the lsaddle piece 87'. The latter' is pivotally'mouinted about.` aspin 90 carried by the-mould sectionfl 88 toperniit 'the insertion of. ayfl'ong 26S betweenV it; andthe mould sec'- tion 88; Thus the saddle piece 87 constitutes 95 a devicewfor holding the. Hong" in position. One end-1 W-all'of' the' mould proper is formed partlyxby aishoul'der 91: on the' under' vface of the 'mould' part 58 andfpartlylby the wall" 64 of a .recessin the' saddle piece 87. The other le() end wall of the mould is formed entirely by the opposite end wall 92 of said recess. The side Walls 13 of the mould on the part 58 are undercut orbevelled to retain the casting in that part when the mould parts are separated. The iong 26 and the two mould sections 87, 88 are clamped together'by means of an eccentric 98 on the rod 94 which is rotatably mounted in lugs 95 on the saddle piece 87. The eccentric 98 is arranged to bear against a shoulder 96 lon the mould section 88. Thus when the eccentric is rotated by means of a knurled knob 97 on the rod 94, the saddle piece 87 and the mould sectionv 88 are drawn together and the Hong is irmly clamped between them.

The mould part comprising the saddle piece 87 and the mould section 88 is carried by a rod 98 which is slidably mounted in bearings 99 carried by arms 100 which project rom trunnions 101 pivotally mounted in the machine frame. At its upper end the rod 98 terminates in a rectangular block 102 which is received loosely between two lugs 103 on the mould section 88. These lugs are bored to receive a pin 104 which passes through a slot 105 in the block 102 with sufficient clearance to allow relative freedom of movement in all directions between the block 102 and the pin 104. The mould section 88 is also resiliently connected to the rod 98 by means of a spring 106 which is received in a recess 107 in the mould section 88 and bears against the upper face of the block 102. The upper face of the mould section 88 is provided with a recess 108 in which a block 109 is loosely mounted so as to form a self-adjust ing seatingr for the Hong 26, the upper face of the block 109 being curved concentrically with the mould part 58.

The rod 98 is moved substantially radially of the mould Vpart 58 to separate the mould parts by means of a cam 110 Xed to a shaft 111. This cam operates a lever 112, one end of which ispivotally connected rto a vertical rod 118 mounted in a bearing 114. The other end of the lever 112 is connected by a link 115 to a lever 116, which is fulcrumed on the machine frame and passes through a slot in the rod 98.

In order to adjust initially the mould section 88 relatively to the mould part 58, the rod 113 is screw-threaded intermediate of its ends to receive a nut 117 which is mounted in a slot 118 in the bearing 114 and prevented thereby from movement axially of the rod 113. Also secured to the shaft 111 is a second cam 119 whichv operates a double-armed lever .120. The latter is articulated at its upper end by a pin-and-slot connection 121 to an arm 122 secured to the shaft 86. The shaft 111 is arranged to be rotated from a shaft 123 carrying a hand wheel '124 by means of toothed Wheels 125, 126, the teeth of the latter being formed on the peripheral edge ofthe cam 119.

An ejector or stripping blade83 is counterbalanced by a Weight 129 and is mounted to swing about pins 130 carried by the machine frame.

The molten metal is delivered into the mould through a hole 127 in the mold part 58, and the supply to the charging nozzle 10 may becontrolled by a cam 128 on the shaft 111.

Assuming that a charge of molten metal hasjust' been delivered into the mould, the operator turns the hand wheel 124 in a clockwise direction. This causes the cam 110 to rotate in an anti-clockwise Y direction and the mould section 88 together with the saddle piece 87 to be lowered substantially radially of the mould part 58 away from the latter. During this separation of the mould parts the casting is retained in the mould part 58 and the latter is stationary. Continued movement of the hand wheel 124 in the clockwise direction brings the cam 119 into operation and the mould part 58 is thereby swung to the left as seen in Figure 2 clear 'of the other mould part, the ejector 83 being tripped. Subsequently, Ithe mould part 58 returns, and during its return movement the casting is stripped by the ejector 83 from said mould part. The other mould part is then moved upwardly into the position shown on the drawings ready for the next cast, and the sequence of operations just described is repeated. A

The invention is not restricted to the pre cise const-ructional details described as obvious changes can be made therein without departing from the invention.

I claim.

1. In a casting machine, the combination with a composite mouldvvhereot one of the mould parts .is movable in a direction substantially normal to the other mould part `to open or close the mould, of an operating member for moving said movable mould part towards or away from the other mould part, on which operating member the. movable mould part is mounted so as to have freedom of movement in all directions relatively to the other mould part;

2. In. a casting machine, the combination with a composite mould whereof one of the mould parts is movable in a direction substantially normal .to the other mould part to open or close the mould, of ajrod on which said movable mould part is mounted so as to have freedom .of movement in all directions relatively to the other mould part, a guide in which saidfrod is slidably mounted in the direction of its axis, and means for moving said rod in its guide to carry the movable mould part towards or away from the other mould part. j

v3. A casting machine having a composite mould one part of which is movablein a direction substantially normal to the other part,

'lill an operating member carrying the movable mould part, a resilient connection between the operating member and said movable mould Y part, and means for actuating the operating member to open or close the mould.

4.. A casting machine having a composite mould one part of which is movable in a direction substantially normal to the other part, a slidably mounted rod on which said movable mould part is resiliently mounted with freedom to move in all directions relatively to the other mould part, and cam-controlled means for actuating the said rod to carry the movable mould part towards or away from the other mould part.

5. In a casting machine having a mould part which is movable in a direction substantially normal to a cooperating mould part to open or close the mould, a self-adjusting seating for a matrix in the said movable mould part.

6. In a casting machine, the combination with one part of a composite mould of a cooperating movable mould part, a self-adj usting matrix seating in said movable mould part, and an operating member on which the movable mould part is mounted so as to have freedom of movement in all directions relatively to the other mould part.

7. A casting machine comprising a composite moul'd whereof one mould part is movable in a direction approximately normal to the other mould part, an operating member on which the said movable mould part is mounted so as to be free to move in all direcrions relatively to the other mould part, which movable mould part is made in two relatively movable sections arranged to receive a matrix between them, clamping means ro clamp the matrix and said two mould-sections together, and means for actuating said operating member to open or close the mould.

In testimony whereof I ax my signature.

VICTOR STANLEY WILLIAMS.

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