US2143082A

US2143082A - Casting machine

Info

Publication number: US2143082A
Application number: US15938A
Authority: US
Inventors: Albert W Morris
Original assignee: MORRIS ENGINEERING CORP
Current assignee: MORRIS ENGINEERING Corp
Priority date: 1935-04-12
Filing date: 1935-04-12
Publication date: 1939-01-10
Anticipated expiration: 1956-01-10

Description

Jan. 10, 1939.

A. w. MORRIS CASTING MACHINE 1 Filed April 12, 1955 3 Sheets-Sheet l Y y ...u mw M wmf HWI Jan. 10, 1939.` I y A W, MORRls 143,082

CASTING MACHINE Filed April 12, 1955 3 Sheets-sheet 2 v 49 gg` 48 59 52 O G J0 j nf; l 5/ .cz 0 40 3,/ Y IV 4f j 55 Z@ l1 /8 7,9 /7/6 Wl 2.4

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r 1 I l 57 l 37' l l x f4 i ff l /0 l ya.

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CASTING MACHINE Filed April l2, 1935 3 Sheets-Sheet 3 open flat, and to close-so as to aid and assist the piston rod passes, the plate'having an ex- 20 hollow castings without use of cores.

conjunction with the accompanying drawings, modates the piston rod holding bolt 23 when 30 parts being brokenaway, the mold sections being trol means of standard type. The plate Iii,l seer 85 Fig. 4 is a top plan view with the mold secbores 25a in the base platefl. The support rods lo o inspection and removal of the castings, and closhas a cross rod 28 mounted in the upper end 45 over, there is no sand in the mold or on the have parts 32, 33 extending above and below 50 56 to a closed position, an intermediate vertical censtop rods 35 secured thereto, which pass through ,Patented im 10,1939 I 2,143,032v

UNITED sTATEs PATENT oFElCE f CASTING MACHINE Albert W. Morris, Springfield, Mass., assignor to Morris Engineering Corporation, a corporation of `Rhode Island Application April 12, 1935', serial No. 15,938 c Claims. (o1. 22--92i' My present invention pertains to the art of tral section or cheek` being used if desired. casting, and has particular reference to an im- The mold sections are held in upright position proved apparatus for facilitating and improvwhen closed, and are preferably adapted for ing the casting of metal articles. gravity filling throughthe top, although the The casting of metal articles has heretofore closed sections may be in anydesired position, been accomplished in sand molds vand in metal and the inlet may be at the bottom or side; the molds. 'Ihese molds have had disadvantageous moldis suitable for manual or for automatic features that have decreased production and inpouring. creased cost; the sand molds must be carefully Referring tol the drawings, the novel casting made up for each casting, and the metal molds apparatus comprises a base plate Ill, on which a. l0V have not been designed for facilitating inspecsupport cylinder II is mounted, as by means of tion or for quickly ejecting the castings. It is bolts I2. The interior of the cylinder is utithe principal object of my invention to provide lizedras a piston chamber I3, in which a piston a metal mold construction which may be 'quickly I4 is adapted to reciprocate, the piston having and fully opened to permit inspection of the the usual packing and having a central bore to 15 castings and the mold, andquick removal of the receive a piston rod I5 extending upwardly castings. therefrom for `a purpose hereinafterv explained.

. To this end, I have providedv a molding appa- The upper end of the cylinder Il is closed by a ratus which utilizes a hinged mold adapted to plate I6, having a central bore I1 through which pouring of the castingmetal. The rquick `openternally threaded peripheral boss I8 concentric ing and the accessibility of the mold parts perwith the bore and receiving a rod packing I9 mit use of insertsy of different materials, and which is locked in place by a gland nut 20. The drawing or bleeding of thecastings to provide piston is moved by fluid pressure, preferably air j under high pressure, admitted through 'inlet 25 With the above and other objects and advanconduits 2I in the base plate and the upper plate, tageous features in view, my invention consists the lower conduit communicating with an inlet of. a novel arrangement of parts more fully dischamber 22 which communicates with the inteclosed in the detailed description following, in rior of the Ycylinder below the piston and accomand more specifically dener in the claims apthe piston is in down position. The inlet conpended hereto. l duits are threaded to receive uid pressure t- In the drawings, tings, and the fluid pressure supply and exhaust Fig. l is a front elevation of the apparatus, is controlled by hand valve or foot valve 'con- Fig. 3, is generally elliptical in form, and is proclosed;

Fig. 2 is a side elevation thereof, parts being vided with bores 24 at the ends which receive in `section and other parts broken away; support rods 25, the lower 4ends of these rods be- Fig. 3 is a top plan view thereof, and ing stepped, see Fig. 2, and set into recesses or tions in opened position. 25 have heads 26 secured to the upper ends i I have found it desirable to provide a simple, thereof, in which spacing shafts 21 are mounted,

inexpensive mold for casting metals, the mold see Figs. 1 and 2.

being permanent, and opening fully to permit Referring now to Fig. 2, the piston rod I5 ing so as to facilitate pouring. The use of perthereof; a central cheek member 29 acts as a manent metal molds insures castings that are base for the outer mold sections and has a deaccurate in size, are smooth-surfaced, and repending boss 30 locked to the piston rod and quire very little machining and nishing. Morethe cross rod, and end plate portions 3| which surface of the castings. the cross rod. The parts 32 contact vertical guide The preferred construction utilizes two hingedchannels 34 formed in the heads 26, which funcly joined mold sections, which are pneumatition to guide the upward movement of the cencally opened to a horizontal position, and swing tral cheek member, and the parts 33 have limit suitable openings 38 in the upper closure plate I6 and have resilient washers 31 which contact the lower face of the plate I6 to limit opening movement of the mold parts.

Two hinged

mold sections

38, 39 are utilized, having hinge rings 46, 4| which embrace the cross rod 28, and

cam strips

42, 43 which slidingly engage

cam cylinders

44, 45 of the heads 26.

Spring arms

46, 41 are secured to the mold sections and extend around the associated spacing shafts 21. Each mold section has one or more mold recesses 48, with' inlets 49 and bottom connections 50.

The operation of the improved casting apparatus may now be explained: With the mold sections in the position shown in Fig. 1, fluid material, such as molten metal, is poured into the inlets, to completely nll the mold recesses and the bottom connections. The molten metal quickly chills, and compressed air is admitted to force the piston upwardly, thus causing a simultaneous upward movement of the cheek section and a swinging movement oi' each mold section, until the mc-ld sections are horizontal, as indicated in Fig. 4. These movements break the castings from the mold recesses and permit quick removal; the mold recesses may then be examined, and cleaned if necessary, and the air pressure reversed to pull the cross rod and the associated mold sections and cheek section, downwardly to again close.

It is thus clear that the improved mold includes separable mold sections, which are opened horizontally to facilitate removal of the castings, and to permit inspection, the parts closing tightly under resilient pressure to receive the poured metal. This construction of mold is particularly suitable for simple castings such as electric irons, clutch plates, ily wheels, gear wheels, and the like, these castings being quickly and economically made. The fiat mold sections are readily manufactured, and may have liners if desired which are most suitable for the material being cast; moreover, the pouring may be from below, under pressure. The resulting castings are uniform, accurate in size, and smooth surfaced, thus requiring a minimum of machining and nishing.

While I have described a specific constructional embodiment of my invention designed for metal castings, the structure of the mold is suitable for casting other materials, such as cements, plaster of Paris, glass, or other uid material; changes in the size and shape oi the parts, and in the materials thereof, may be made to suit the requirements for different molding duties, within the spirit and the scope of the invention as defined in the appended claims.

I claim:

1. Ina casting machine, a frame, three mold sections movably mounted in said frame and including a central cheek member slidably mounted in said frame and having a pivot, the outer mold sections having mold recesses and being hinged to said pivot on the cheek member, means positioned on said frame for moving said pivot, and guide members on the frame and cooperating arms on the outer mold sections for positioning said outer mold sections at a predetermined angle to the cheek member.

2. In a casting machine, a frame, three mold sections movably mounted in said frame and including a central cheek member slidably mounted in said frame and having a pivot, the outer mold sections having mold recesses and being hinged to said pivot on the cheek member, means positioned on said frame for moving said pivot, and guide members on the frame and cooperating cam elements on the outer mold sections for positioning said outer mold sections in contacting engagement with the cheek member.

3. In a casting machine, a frame, three mold sections movably mounted in said frame and including a central cheek member slidably mounted in said frame and having a pivot, the outer mold sections having mold recesses and being hinged to said pivot on the cheek member, means positioned on said frame for moving said pivot, guide members on the frame, cooperating arms on the outer mold sections for positioninglsaid louter mold sections at a predetermined angle to the cheek member, and cam elements on the outer mold sections for positioning said outer mold sections in contacting engagement with the cheek member.

4. In a casting machine, a frame, a mold base mounted to slide therein, and a mold section movably mounted thereon, said mold section having a mold recess and being hinged to a pivot on the base, means for sliding said base to move said pivot, and guide means on the frame and cooperating arm means on the mold section for positioning said mold section at a predetermined angle to the base.

5. In a casting machine, a frame, a mold base mounted to slide therein, and a mold section movably mounted thereon, said mold section having a mold recess and being hinged to a pivot on the base, means for sliding said base to move said pivot, and guide means on the frame and cooperating cam means on the mold section for positioning' said mold section in contacting engagement with the base.

6. In a casting machine, a frame, a mold base mounted to slide therein, and a mold section movably mounted thereon, said mold section having a mold recess and being hinged to a pivot on the base, means for sliding said base to move said pivot, guide means on the frame, cooperating arm means on the mold section for positioning said mold section at a predetermined angle to the base, and cooperating cam means on the mold section for positioning said mold section in contacting engagement with the base.

ALBERT W. MORRIS.