US2349219A

US2349219A - Molding machine

Info

Publication number: US2349219A
Application number: US443999A
Authority: US
Inventors: Howard S Wood
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-05-21
Filing date: 1942-05-21
Publication date: 1944-05-16
Anticipated expiration: 1961-05-16

Description

y 1944- H. s. WOOD 7 2,349,219

MOLDING MACHINE Filed May 21, 1942 v 5 Sheets-Sheet l INVENTOR.

May 16, '1944. H s, O 2,349,219

MOLDING MACHINE Filed May 21, 1942 5 Sheets-Sheet 2 f2. 6.14 00 cl,

INVENTOR.

May 16, 1944. H. s. WOOD MOLDING MACHINE d 5 0 R t a m e e W N H m 6 w. e I e h s fl 5 .I w Q w 1 ill 2 NN 1:. v. a r %WN w d e \W F May 16, 1944. H. s. WOOD MOLDING MACHINE Filed Mayv 21, 1942 5 Sheets-Sheet 4 17.6. Wood,

- INVENTOR.

May 16, 1944. H. s. WOOD MOLDING MACHINE Filed May 21, 1942 5 Sheets-Sheet 5 mm M IN VEN TOR.

Patented May 16, 1944 K UNITED STATES PATENT OFFICE MOLDING MACHINE Howard S Wood, Lansdale, Pa. Application May 21, 1942, Serial No. 443,999 1 3 Claims.

This invention aims to provide novel means whereby a dragand a cope, closed at their upper ends by a pattern carrier, may be filled with molding sand, by air pressure from below.

A further object of'the invention is to employ novel means whereby, after the drag and cope have been filled, they may be transferred, without changing their relative positions, a squeezing instrumentality, the drag and cope patterns being lifted from the drag and from the cope, the cope being inverted on the drag.

' It is within'theprovince of the disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangementof parts and'in' the details of construction hereinafter described andclaimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of'what isclaimed, without departing from the spirit of the invention.

1 In the accompanying drawings:

Fig; 1 shows inside elevation, a device constructed in, accordance with the invention, one truck being omitted, and the parts being in the positionswhich they'occupy whilst sand is being introduced into the drag-and the cope; 1

Fig. 2 is a side elevation, one truck being omitted; the. parts being in the positions which they will assume after the-drag and the cope have been advanced over the squeeze or lifting means, and; after ithe parts that carry the cope pattern and. the drag pattern have been lifted free from thedrag. andthe cope; I

Fig.3 is a side elevationashowing a device constructed inuaccordance withv the invention, the parts being in positions that they will assume after the cope has been inverted on the drag, and after the truck that carries the drag and cope patterns has been retracted;

Fig. 4 is a longitudinal section, wherein parts appear in elevation, the drag and cope patterns and associated .partscbeing in position on the upper ends of the hoppers Fig. 5 is a transverse section taken through one of. the hoppers and-associated parts, portions. of the machine being in elevation;

Fig; 64 is: a diagrammatic elevation of the remote controls. a

In carrying'out the invention, there is provided afoundation .l of any desired sort, the foundationcarrying at onerend ofthe machine, across beam 2, and at the opposite end of the machine a cross beam 3 (Fig. 3), the cross beam 3 supporting sockets 4.

Elongated base members 5 are supported on the cross beams 3 and 2' and carry lower track rails 6 (Figs. 5 and 3). A casing 1 is provided, and may be connected at its upper end to the base members 5, as shown in Fig. 5. The casing l embodies a pair of hoppers 8, which taper toward their upper ends andtoward their lower ends. The hoppers 8 are disposed close together, one behind the other, lengthwise of the machine.

" A brace 9 extends from one portion of the casing 'l' to the cross beam 3. The opposite portion of the casing l carries sockets lit, corresponding in function to the sockets 4, and to be referred to hereinafter. Eachhopper 8 is provided intermediate its ends with a transverse, foram'inous grid 12. Molding sand may be placed in the hoppers 8, above the grids [2 when doors [4 are opened, the doors being hinged at l5 to the casing 7, and being held closed by latches It.

An elongated carriage I1 is mounted for reciprocation'on the lower track rails 6 and has openings is (Fig. 4) registering with the open upper ends of the hoppers 8. It may be here noted that, as shown in Fig. 4, one of the'hoppers 8 is supplied at its upper end with a sand shear H), which is V-shaped in vertical section. Referring to Fig. 2, when the carriage is advanced to a predetermined position, it moves under the overhanging parts of the hold-downs 20, as shown in Fig; 5. l

A: means is provided for imparting reciprocation to the carriage ii, and that means may be of any desired sort. For example, a-fluid pressure cylinder 2| may" be attached by brackets 2-2 to the base structure 5. A fluid pressure pipe 23 is secured to one end of the cylinder 2|, and a fluid pressure pipe communicates with the cylinder adjacent to the opposite end thereof. A piston 26 is mounted for reciprocation in the cylinder 2| and is carried by a rod 27', secured adjustably, as at 28, to an anchor 29- on the carriage l1. As shown in Fig. 1, the carriage I1 is supplied with keepers 39, the openings' H3 in the carriage being disposed (Fig; 4) between the keepers.

' Squeeze and lifting cylinders 3| and '32 are in the cylinder 3|. A piston 36 is slidably mounted in the cylinder 32, the pistons having enlarged heads 31, the heads being so spaced apart, longitudinally of the machine, and being of such diameters, that they can enter the openings 8 of the carriage l1, under conditions to be pointed out hereinafter. Pressure is supplied to the cylinder 3| through a pipe 36, and to-the cylinder 32 through a pipe 39.

Standards 40 are mounted at their lower ends in the sockets 4 and I0, collars4| being mounted on the standards for vertical adjustment, the collars being held in adjusted positions by means of set screws 42. The collars 4| at the respective sides of the machine, have offsets 44 (Fig.

supporting upper track rails 43. Referring to Fig. 3, a truck designated as a whole by the letter A, and a truck designated as a whole by the letter B are wheel-mounted to move along the track rails 43.

A fluid pressure cylinder 45 is mounted vertically on the truck A. A piston (shown in dotted line in Fig. 1) is mounted to reciprocate in the cylinder 45, the rod 46 of the piston being supplied at its lower end with a hook 41. A valve 48 is carried by the cylinder 45, and is interposed in a fluid pressure pipe 49 communicating with the cylinder below the piston therein. The valve has an operators control, of any desired sort, marked by the numeral 56. The hook 41 of the piston rod 46 is engaged in a hole 5|, formed in a beam 52, midway between the ends thereof.

The numeral 53 marks a carrier, disposed below the beam 52 and provided with pivotally mounted latches 54 adapted to cooperate with the keepers 39 on the carriage IT, to hold down the carrier 53. The parts 36 and 54 may be replaced by any other suitable mechanism adapted for the end in view. The carrier 53 (Fig. 4) has upstanding lugs 55, carrying eyes 56, and shackles 51, carried by the eyes, are detachably mounted on the beam 52. Referring to Fig. 5, a vibrator 58 of any standard and approved construction cooperates with one of the lugs 55 or with some other part of the carrier 53.

Referring to Fig. 4, the numeral 59 marks a drag pattern holder, carrying on its lower surface a drag pattern 66. The drag pattern holder 59 rests on a drag 6|, supported on the carriage I], about the appropriate opening |8 therein. The drag 6| has outstanding ears 62. The drag pattern holder 59 is connected to the carrier 53 by bolts 63, elongated and enlarged to form pins 64 received in openings formed in the ears 62 of the drag. The drag BI is supplied with oppositely disposed trunnions 65. I

Asto the cope and associated parts, the description may be reduced to a mere catalogue, in view of what has been stated hereinbefore respecting the drag. The drawings (Figs. 4 and 1) show a cope pattern holder 66, a cope pattern 61, connecting bolts 68, pins 69, a cope 16, and trunnions 1| on the cope, the ears being shown at 12.

As to the truck B, it may be reduced to a catalogue of parts since, in most respects, it is like truck A. The truck B carries a cylinder 13, a

valve 14, means for operating the valve manusand in the hoppers 8 above the grids l2. Air proceeding through the blast pipes drives the sand up into the drag 6| and into the cope 1|), lodging the sand about the patterns 60 and 61, it being understood that, if desired, the drag and the cope may be ventilated in any suitable way, to let out the air. The piston rod 21 advances the carriage l1, and the car A moves forward on the track 43, until the drag 6| of Fig. 2 is immediately over the left hand piston head 31 of Fig. 4, the cope 10 being directly over the right hand piston head 31. It is during the advancement of the carrier |1 that the sand shear l3 "of Fig. 4 smoothes oil? the bottom of the sand in the drag 6|, in the cope 10, and in the openings I8 of the carrier H. The pistons 35 and 36 are operated to compact the material in the cope 10 and in the drag 6|, it being understood that during this operation, the cope, the drag and the carrier 53 are in the condition shown in Fig. 1, with respect to each other.

The piston rod 46 of the cylinder 45 raises the carrier 53 and parts associated with it to the position of Fig. 2. Then the car A is rolled back out of the way, to the right in Fig. 3.

The car B is moved into the position of Fig. 8, and links 19, carried by the hook 11, are engaged with the trunnions 1| of the cope 16, the cope then being in the position of Fig. 2, with respect to the drag 6|. By the operation of the piston rod 16, the cope is raised, and is turned over, and lowered upon the drag 6|, pins (Fig. 3) being inserted through

ears

12 and 62 of the cope and the drag respectively. The links 19 are cast off the trunnions 1| of the cope, and the connected cope and drag structure may be carried away to the molding room, elsewhere or pouring station.

There are five remote air controls which, respectively, govern the backward and forward movement of the piston 21 in the cylinder 2| (Fig. 2), the fiow of pressure to the air blast conduits II, and the individual operation of'the squeeze pistons 35 and 36 of Fig. 4.

Referring to Fig. 6, a pipe 8| furnishes an air blast to the conduits II of Fig. 3, the'pipe 8| having at its upper end, a valve 82, under the control of an operator. A pipe 83 communicates with the pipe of the squeeze cylinder 3|, and is provided with its individual hand valve 84. A pipe 86 communicates with the pipe 39 of the squeeze cylinder 32, and has an individual hand valve 81. A pipe 88 communicates with the pipe for the cylinder 21 of Fig. 2, and a pipe 69 communicates with the pipe 23 of that figure, a valve being common to the

pipes

88 and 89, to secure to reciprocation of the piston 26 of Fig. 2. Gauges 9|, having no patentable novelty,'indicate the pressures in the several conduits.

The molding material preferably comprises silicon dioxide.

Having thus described the invention, what is claimed is: I

1. In a molding machine, a support, squeeze mechanisms carried by the support and spaced apart longitudinally thereof, a carriage mounted for reciprocation on the support and having open ings spaced apart as are the squeeze mechanisms, a drag and a cope on the carriage and communie eating with the openings, respectively, alvertically movable frame constituting a closure for the upper ends of the cope and the drag, means for coupling the frame releasably to the carriage, patterns-on the frame and indivdual to the cope and the drag. means for advancing the carriage to bring the openings thereof into registration with the squeeze mechanisms, respectively, means for raising the frame to cause the patterns to clear the cope and the drag, respectively, and means for discharging molding material through the openings and into the cope and the drag, before the carriage is advanced.

, and cope parts, means for advancing the carriage to bring the drag and cope parts into the field of operation of the squeeze mechanisms, an

overhead track, a truck movable along the track, and lifting means on the truck and connected to the closure, to free the patterns from the drag and cope parts after the squeeze mechanisms have operated with respect to the drag and cope parts.

3. In a molding machine, a support, a carriage movable along the support, drag and cope parts disposed side by side on the carriage, means for fitting the drag and cope parts for casting, squeeze mechanisms carried by the support, means for advancing the carriage, to bring the drag and cope parts into the field of operation of the squeeze mechanisms, an overhead track, a truck movable along the track, a raising and lowering mechanism carried by the truck, and means for pivotally connectin the raising and lowering mechanism with the cope, whereby the cope may be raised, inverted and lowered upon the drag, the truck being movable on the track to position the cope above the drag.

' HOWARD S. WOOD.