US2653371A - Casting ejector - Google Patents

Description

H. V. KRUSE CASTING EJECTOR Sept. 29, 1953 3 Sheets-Sheet 2 Filed Sept. 28, 1950 Fig. 4

2 V II? l0 llll "Ilium Inventor Helmer ll. Krus'e Patented Sept. 29, 1953 UNITED STATES PATENT Q'FFICE aesaa'ii V oAs'iifio mares fllmer iiius'e, Dailies", iiiiz: Application September 28, 1950; Serial No; mass oitifiii's (o1; ee -"155i X. 1' A. The present invention relates to improvements in casting ejectorssand more partipularly to a device comprised of a first frame and an ejector frame, the frames providing a mo'ld An object of the present invention to provide an improved castin eject r wherein the ejector frame is movable relatively to the .fi fSt frame whereby the casting may ,be forced from the confining walls of the first frame. 4. W ,t

Another object of the present invention is to provide an improved actuating means whereby the ejector frame may. be moved relative to the first frame so that the first.'and ejector frames remain in axial alignmentduring the ejecting operation: v

Still another object of the present invention is to provide an arrangement wherein. coring means may b removably attached to the first frame as desired.- v V A further object of the present inventionv is to provide a casting ejector which is simple" in construction, economical of manufactmr; easily adjusted to provide a mold and readily power actuated in an inverted" position for jectmg" the casting.

Various other objects and advantages will become apparentfrom'the" detailed description to follow. The best formin which I have comtemplated applying my invention clearly i1'-- lustrated' in the accompanying drawings,

wherein:

Figure] 1 a" vertical longitudinal'sectional view of the casting ejector its upright position providing a mold: 5

Figure 2is a vertical' transverse sectionalview taken substantially along theplari'e of' line"2'2 of Figure 1; 4 Figure 3 is a" side" elevation'al -vie'w' of the cast ing ejector shown in it'sinverted position'prepar'atory to ejecting the casting; v V j. v

Figure 4" is a horizontal longitndinalgsectional view'taken substantially on theplaneof-line 4 4 of Figure 3; .t A WV 7 A Figure 5 is a" view sim'ilanto' Figure .3 .but wherein the power actuatingimeanshasbeen operated'to effectejectionofthecasting; H

Figure 6 is a vertical"transverse'sectional View taken substantially alongthe-plangof line 6--6 of Figure 5; t v

Figure '7 is a horizontallongitudinalsectional view taken substantialry along the plane of line 1 of Figure 3; and" K v Figure 8"is' an endelevatidnalview-as seen-from the'right' of Figure' 4'. Y 7

L Referringmore particularly to-thedrawings,

n lik. numerals designate like parts throughout thqnumeial ll) designates generally the casting ejector of the pres'ent invention which is cgmprised of a first frame [2 and an ejector frame !4, the firsjq iranie 12 and the ejector frame l4 being relatively, movable respect to eagh othert 'fhe invention also comprises a power actuating mearrs l 5 for effecting relative vertical movement between 1 the frames and "a core means l8 which may be mounted on the f am 1',. r 4

e The first frame l'l includes a pair of chann l dl mim mb rs 20. n lzi rm n n Walls 24. anazzfi, ai .Qt h n eE ede members 28 nd. i mine si e wa s} an 4 a d j nin the .end em er lq and 2 d the e members Meand r ar substantially reduced in hei ht with relation o. the-en m mb and 22 as seenin Figural 'Ijhus, the end walls 24' and 2B and side. Walls, 32; and 34 provide the upstanding walls of a mold in which the casting 361s to be casts. r

. As seen best! in; Figures Land 7, a plurality of .T-sh'aped supports ,38 connect the channeled members 28 and 30 at spaced positions along their lengths. The ends of the T-shaped supports 38 may be'secured in any desired fashion to thechannelted members28and 30 and the bars? 40 which form" an' element ofeach vof the T-sh'aped supports are in upstanding relation to provide supporting surfaces for the wall 42. A strap" 44: also extendslbetween the channeled members. 28 and 30' and is removably vattached thereto by means of the bolts 46. ,The strap 7 44 is. adapted to support the coring means It which is here shown inth'e form of a rectangular block 48 whieh'isscuredito the. strap 44 by means of aplurality of' screws 50". Of course, coring means of various forms may beemployed andtneir positioning" within the frame will be as desired: a

The wall 42is" of rectangular shape and is adapted toslidinglfengage the walls 24, 26; 32 an etwnhan cperimgm 'beingprovided'therein for" steamy receiving? the" core 48. The wall .42

to the efjector m'b'y means of a plurality of upstandingposts-51 which are'frigidly secured totlie'uriderside oflthe'wall' 42,- The opposite endsfofi the" posts 52'.are fixedly secured to a plurality'oftransversely extending bars 54 which 7 portions 65 and c2 joined by the plurality of bars 54. Bolts 64 are employed for securing the loight portions E58 and S2 of the ejector frame to the extremities of the bars 55. it will be seen that the bottom wal1 52 is rigidly supported in spaced relation to the bars 54 and is adapted to move unitarily with the ejector frame M.

The leg portions 66, 68, Iii and F2 are adapted to be slidable through the outstanding portions 14 and 56 of the channeled element 23 and through the outstanding portions '58 and of the channeled element 30. Each of the leg portions 65, 68, it and i2 is formed as a gear rackand each of the gear racks faces a common direction.

The means for effecting relative movement between the first frame l2 and the ejector frame it is designated generally as the power actuating means is. The power actuating means is best shown in Figures 3 and 4 and is comprised of a pair of power cylinders 82 and 84 which are longitudinally disposed. Each of the power cylinders 82 and 84 has one end thereof supported by a bolt 86 which is secured to one of the side elements 28 and 3'8. The power cylinders 62 and 86 are of hollow construction provided with end closure elements 88 and A fluid supply conduit 92 has branch tubes 34 and 9% leading to the end closures 88 of the cylinders 52 and 84 to supply fluid behind the piston 98 which is slidably disposed Within the cylinders. Plungers we are secured to the pistons 98 in each of the cylinders 82 and 84 and extend outwardly through the end closures 9d. The free end of the plunger rod Hill of each of these cylinders 82 and 84 is supported by a sleeve Q96 which is integrally formed with a bracket Thus [G8 which is, in turn, secured to one of a pair The rack bars I92 and act are longitudinally and slidably mounted on the first frame 12 and have their end portions adapted to slide through openings HE) and H2 in the channeled meinhere 28 and 22. A pair of gears ii and {it is disposed on each side of the first frame i2 and within the channeled elements 28 and 3 3. The gears are mounted on supporting bolts H8 which are secured to the side walls 28 and Si with spacing sleeves l2!) maintaining the gears in spaced relation thereto. The gears lit are both connected to a shaft I22 which is rotatably disposed in a pair of bearing brackets are and I25 which are fixedly secured to the end member 22.

Each of the gears H4 and H6 is positioned for operative engagement with the vertically dis posed rack bars 1c and i2 and the longitudinally disposed gear racks Hi2 and ltd.

From the foregoing description taken in conjunction with the drawings, it is believed that the manner in which the casting extractor is operated will be readily apparent to one skilled in the art. When the casting ejector It is in its upstanding position as shown in Figure 1, the side walls 32 and 34 and the end walls 2 2- and 28 cooperate with the bottom wall 42 of the ejector frame !4 to provide a mold. The coring means 18 is supported by the first frame 52. The material to be cast is then poured into the mold and allowed to solidify. Next, the casting ejector is inverted to the position shown in Figure 3 and fluid under pressure is admitted to the power cylinders through the conduit 92, thereby effecting longitudinal movement of the pistons fit against the urging of the coil compression springs 99. The longitudinal movement of the pistons Q3 will be accompanied by longitudinal movement of the racks Hi2 and 1&4. Inasmuch as the gears i it and lit are in operative engagement with the racks I02 and I 84, they will rotate in similar directions. Rotation of the gears lid and lit will raise the first frame i2 with respect to the ejector frame 14 because of the engagement between the gears i l4 and l 56 and the vertically disposed rack bars 353 and E2 of the ejector frame. Inasmuch as the bottom wall 42 is rigidly secured to the ejector frame it, the bottom wall will not rise with the first frame 62 and the walls 24, 25, 32 and will rise vertically while slidably contacting the outer periphery of the bottom wall 42 until the first frame l2 reaches the position shown in Figures 5 and 6. The core 28, being attached to the first frame IE, will rise in unison with the first frame and the casting 33 will be forcibly maintained on the supporting surface 3i for the casting ejector.

After the casting 35 has been ejected from the mold, the fluid pressure may be cut oif and the casting ejector inverted for again providing a mold. The coil springs 99 will urge the pistons iii to their normal positions and the first and ejector frames will again he in their original relation as shown in Figure 1.

in view of the foregoing description, it is believed that a device has been provided which will accomplish all of the objects hereinabove set forth. Of course, various mechanical modifications may be made which will fall within the scope of the appended claims.

Having described the invention, what is claimed as new is:

l. A casting ejector comprising a first frame having end and longitudinal members providing walls for a mold, a plurality of transversely extending bars having their ends secured to said side members at points intermediate the open ends of said first frame, core means detachably connected to preselected of said bars, an ejector frame mounted within said first frame, an ejector wall disposed within said first frame and in sliding contact with the members and providing a bottom wall for the mold when in its upright position, said ejector wall being fixedly secured in spaced relation to one end of said ejector frame, said first and ejector frames being reciprocably mounted with respect to each other, and power actuated means for effecting relative movement between said first frame and ejector frame when in a second position inverted to the upright position whereby the casting within the mold may be ejected, said power actuated means including at least one power cylinder having one end attached to said first frame exterio-rly of said longitudinal members, horizontally disposed rack means disposed in parallel relation to said power cylinder and mounted for reciprocating movement on said first frame, the plunger of said power cylinder being connected for effecting longitudinal movement of said rack means upon actuation of said power cylinder, gears mounted on opposite ends of said first frame and operatively engageable with said rack means for rotation upon longitudinal movement of said rack'means, said ejector frame having insteam through the sides of said first frame, the free ends of thelegs of said U-shaped elements providing supporting legs for the first and ejector frame when in their inverted ejecting position, said legs being formed as gear racks facing a common direction, gears rotatably supported by said first frame and operatively engageable with said gear racks, and second gear racks for effecting rotation of said gears thereby effecting relative movement between said first and ejector frames.

3. A casting ejector comprising a first frame,

an ejector frame mounted within said frame, saidfirst and ejector frames together providing a casting mold, said first frame including a pair of channeled end members forming end walls, a pair of channeled side members forming side walls and joining said end walls, said side members being substantially reduced in height with relation to said end members, said ejector frame including a pair of substantially U-shaped longitudinal side elements joined in spaced relation by a plurality of cross bars, the legs of said side elements being slidably engaged through the side members of said first frame, the free ends of the legs of said U-shaped elements providing supporting legs for the first and ejector frames when in their inverted ejecting position, said legs being formed as gear racks facing a common direction, gears rotatably supported by said first frame and operatively engageable with said gear racks, and second gear racks for effecting rotation of said gears thereby effecting relative movement between said first and ejector frames.

4. A casting ejector comprising a first frame, an ejector frame mounted within said frame, said first and ejector frames together providing a casting mold, said ejector frame including a pair of substantially U-shaped longitudinal side elements joined in spaced relation by a plurality of cross bars, the free ends of the legs of said U-shaped elements providing supporting legs for the first and ejector frame when in their inverted ejecting position, said legs being formed as gear racks facing a common direction, gears rotatably supported by said first frame and operatively eng-ageable with said gear racks, and means for effecting rotation of said gears thereby effecting relative movement between said first and ejector frames, said means including at least one power cylinder having one end attached to said first frame and being horizontally disposed, a horizontally disposed gear rack in juxtaposition to said power cylinder and slidably disposed on said first frame and operatively engageable with said gears, a piston and plunger reciprocably mounted within each of said power cylinders and actuated by fluid pressure, means connecting each of said plungers with the juxtaposed gear rack.

5. A. casting ejector comprising a first frame, an ejector frame mounted within said frame, said first and ejector frames together providing a casting mold, said first frame including a pair of channeled end members forming end walls, a

. 6 pair of channeled side members forming side walls and joining said end walls, said side membersbeing substantially reduced inheight with relation to said end members, said ejector frame including'a pair of substantially U-shaped longitudinal side elements joined in spaced relation by a plurality of cross bars, the free ends of the legs of said U-shaped elements providing supporting legs for the first and ejector frames when in their inverted ejecting position, said legs being formed as gear racks facing a common direction, gears rotatably supported by said first frame and operatively engageable with said gear racks, and means for effecting rotation of said gears thereby effecting relative movement between said first and ejector frames, said means including at least one power cylinder having one end attached to said first frame and being horizontally disposed, a horizontally disposed gear rack in juxtaposition to said power cylinder and slidably disposed on said first frame and operatively engageable with said gears, a piston and plunger reciprocably mounted within each of said power cylinders and actuated by fluid pressure, means connecting each of said plungers within the juxtaposed gear rack.

6. A casting ejector comprising a first frame having end and longitudinal members providing walls for a mold, a plurality of transversely extending bars having their ends secured to said side members at points intermediate the open ends of said first frame, core means detachably connected to preselected of said bars, an ejector frame mounted within said first frame, an ejector wall disposed within said first frame and in sliding contact with the members and providing a bottom wall for the mold when in its upright position, said ejector wall being fixedly secured in spaced relation to one end of said ejector frame, said first and ejector frames being reciprocably mounted with respect to each other, and power actuated means for effecting relative movement between said first frame and ejector frame when in a second position inverted to the upright position whereby the casting within the mold may be ejected, said power actuated means including at least one power cylinder having one end attached to said first frame exteriorly of said longitudinal members, horizontally disposed rack means disposed in parallel relation to said power cylinder and mounted for reciprocating movement on said first frame, the plunger of said power cylinder being connected for effecting longitudinal movement of said rack means upon actuation of said power cylinder, gears mounted on opposite ends of said first frame and operatively engageable with said rack means for rotation upon longitudinal movement of said rack means, said ejector frame having integrally formed therewith vertically disposed rack means operatively engageable with said gears whereby rotation of said gears effects movement of said extractor frame with respect to said first frame.

7. A casting ejector comprising a first frame, an ejector frame mounted within said first frame, said first and ejector frames together providing a casting mold, said ejector frame including a pair of substantially U-shaped longitudinal side elements joined in spaced relation by a plurality of cross bars and slidably engaged in openings through the sides of said first frame, the free ends of the legs of said U-shaped elements providing supporting legs for the first and ejector frames when in their inverted ejecting position, said legs being formed as gear racks facing a common direction, gears rotatably supported by 7 said first frame and onerativelyengageable with said gear racks, a shaft connecting a pair of said gears for simultaneous rotation, and second gear racks for efiecting rotation of said gears thereby efiecting relative movement between said first 5 and ejector frames.

8. A casting ejector comprising a first frame, an ejector frame slidably mounted within said .first frame, said first frame in combination with a moveable bottom carried by said ejector frame forming a mold, said ejector frame having vertical legs with gear racks formed thereon, gears :rotatably carried by said first frame in engagement with said gear racks, second gear racks carried by said first frame in engagement with 8 said gears, meansfor moving said second gear racks longitudinally.

HELMER V. KRUSE.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,029,560 Pauly June 11, 1912 1,111,808 Sheldon Sept. 29, 1914 1,166,312 Barten Dec. 28, 1915 1,347,356 Tonkin July 20, 1920 1,717,676 Garvin et a1. June 18, 1929 2,397,223 Valdastri, Sr Mar. 26, 1946

Images