US2526918A - Mold operating device - Google Patents

Description

Oct. 24, 1950 c. F. WILBERSCHIED MOLD OPERATING DEVICE 3 Sheets-Sheet 1 Filed 001;. 7, 1948 I INVENTOR. L'HflRlES F WIIBERSL'l-l/'l? g g/Lu 62. H77

Oct. 24, 1950 c. F. WILBERSCHIED MOLD OPERATING DEVICE 3, Sheets-Sheet 2 Filed Oct. 7, 1948 IN V EN TOR.

C. F. WILBERSCHIED MOLD OPERATING DEVICE Oct. 24, 1950 I5 Sheets-Sheet 3 Filed on. 7. 1948 IN VEN TOR.

Patented Oct. 24, 1950 MOLD OPERATING DEVICE Charles F. Wilberschied, Cleveland, Ohio, assignor to Vincent J. Sedlon, Bay Village, Ohio Application October 7, 1948, Serial No. 53,267

6 Claims. (01. 2292) This invention relates to machines for making castings in metallic molds, particularly that type of machines which are made in two or more mold sections movable toward and from each other by power mechanism acting in a plane perpendicular to the parting plane between the proximate faces of the mold members; and is an improvement of the structure disclosed in my pending application Serial No. 791,569, filed December 13, 1947, which shows a casting machine of the type referred to above in which the mold sections are shifted toward each other by mechanism constructed to successively effect pushing of the mold sections to closed position and thereafter drawing of the mold sections tightly toward each other to prevent, in casting operations, deforming and warping of the molds or dies by substantial temperature changes present in casting operations.

The primary object of the present invention is the provision of a casting machine of the type Fig. 5 is a fragmentary longitudinal, sectional view on line 55 of Fig. 2.

Fig. 6 is a fragmentary side view showing the mold sections in almost closed position prior to their being drawn toward each other.

Fig. '7 is a fragmentary side view similar to Fig. 6 showing the mold sections tightly drawn together.

Fig. 8 is a fragmentary view showing the locking elements partly engaged prior to their action of drawing the mold sections toward each other.

Fig. 9 is a fragmentary view similar to Fig. 8 showing the locking elements in tightly engaged clamping action when tightly drawing the mold sections toward each other.

Referring now more in detail to the exemplified form of the invention shown in the drawings,

' reference numeral 2 denotes the frame of a mareferred to above with a mechanism arranged to directly push one of the mold sections toward the other one and at predetermined position of said one mold section effect drawing of said one mold section toward the other mold section, the mechanism including a coupling member provided with shiftable lever means to permit direct pushing of said one mold section toward the other one and direct actuation of clamping mechanism supported by said mold sections and adapted to draw said sections toward each other.

With the above and other incidental objects in view which will appear hereinafter, the invention consists in certain other novel features of construction and combination of parts, the essential elements of which are set forth in the appended claims and a preferred form of embodiment of the invention is hereinafter shown with reference to the drawings accompanying and forming part of the specification.

. In the drawings:

Fig. 1 is a perspective view of a machine for making castings constructed in accordance with the invention, the mold sections being shown in axially spaced relation with respect to each other.

Fig. 2 is a p an view of the machine shown in Fig. 1.

Fig. 3 is a fragmentary plan view similar to Fig. 2 showing the mold sections in almost closed position prior to their being drawn toward each other. 3 7

Fig. 4 is a fragmentary plan view similar to Fig. 3 showing the mold sectionstightly drawn together. I

chine for making castings, which frame embodies two upright end plates 3 and 4 secured in spaced relation to each other by a tie rod 5 and a pair of parallel, spaced guide rods or ways 6 and I. The guide rods which are secured to the end plates by nut members 8, adjustably support a stationary mold supporting member 9 fixedly secured to said guide'rods by set screws I0, and freely shlftably mount a shiftable mold supporting member II coupled with an actuating device I2 secured to a bracket I4 on end plate 3. Mold supporting members 5 and II mount rigidly secured thereto complementary mold sections I5 and I6, of which mold section I5 is mounted on the stationary mold supporting member 9 and mold section I6 is mounted on the shiftable mold supporting member II, so as to guide shiftable mold section I6 in parallel relation with respect to stationary mold section I5.

Actuating device I2 for shifting mold section IE on ways 6 and 'I embodies a fluid-actuated cylinder piston member I! connected by a hose I8 with a source of fluid pressure (not shown). Member [1, as customary and not shown in detail, is actuated by an automatically actuated valve arrangement I9 feeding successively through pipes 20 and 2| fluid under pressure into the opposite ends of the cylinder piston member I! to effect automatic shifting of its piston and piston member H in opposite directions. ing cycle of the machine effects closing of the mold by shifting mold section I6 toward stationary mold section I5, drawing of the mold section I6 toward mold section I5 and, after casting operations, returning mold section I 6 to its original position. Closing of the mold is thus effected in two steps, shifting of mold section I5 toward mold Each operatsection and forcible drawing of th mold sections toward each other. For such purpose the piston of cylinder piston member I! has its piston rod 22 coupled with mold supporting member II by means of a coupling mechanism 23 constructed to directly couple mold supporting member II with piston rod 22 and, in a predetermined position of mold supporting member ll, effect a lost motion between piston rod 22 and member H to permit independent actuation of a lever mechanism 24 adapted to forcibly draw shiftable mold section l6 toward stationary mold section l5, as will be later described. 1

The coupling mechanism 23 embodies an elongated base member 25 which is axially slotted at 26 and near its end portion 21 threadedly engaged with piston rod 22 at 28. Base member 25 has its free end 29 freely shiftably extended through a bushed hole 30 in an upwardly extended, bracket-like portion 3| of shiftable mold supporting member H and pivotally supports in slot 26 an L -shaped lever 3-2. Furthermore, base member 25 has pivoted to its end 2-! link members 33 which connect the base member with the lever mechanism 24. The L-shaped lever 32 is l pivoted to base member 25by a pin 34 extended through the short arm 35 of said lever about midway thereof to automatically and by gravity position the lever 32 as indicated in Fig. 5, so as toengage with its curved front face 35, the outer edge 31 of a bushing 38 in hole 30 of bracketlike portion 3i and prevent relative movement between the mold supporting member I I and the coupling mechanism 23 whensuch mechanism is shifted in a direction toward the stationary mold supporting member 9. The longer arm 39 of L- shaped lever 32 is bent to extend its end portion '40 downwardly in substantially vertical direction adjacent to the end wall of shiftable mold sup- ;porting member II when such lever is gravity controlled and facilitate tilting of such lever by an actuating rod member 4! axially adjustably 'mounted on stationary mold supporting member 9.

Rod member 4! is dimensioned to contact and tilt lever 32 to disengage its curved front face 36 from the outer edge 31 of bushing 38 and thereby permit lost motion between coupling mechanism 23 and shiftable mold supporting member i I when the latter is shifted to a position adjacent to stationary mold supporting member '9. This disengagement of lever 32 permits further shifting of the coupling mechanism 23 as short arm 35 of lever 32 can freelypass through bushing 38 and this shifting is utilized for actuation of lever mechanism 24-coupled with mechanism 23 by link members 33.

Lever mechanism 24 embodies bracket members 42 attached'by set screws 43 to the outside of the side members 44 of stationary mold section 15 in such a fashion that the hook-shaped ends 45 of bracket members 42 extend forwardly of mold section l5, and furthermore embodies a shiftable, elongated locking member 46 which slidably contacts the rear wall of shiftable mold section I9 and is coupled therewith in a manner hereinafter to be described. The locking member 46 has extended fromits central portion two parallel arms 4'! having their end portions linked by link members 48 to the shiftable mold'supporting member II. This arrangement permits vertical shifting and axial rotation of the locking member 45 when coupling mechanism 23, linked to lever mechanism 24, is shifted with respect to the shiftable mold supporting member !6, at

4 the time the latter member, as previously stated, is positioned adjacent to the stationary mold supporting member 9 and lever 32 is disengaged from its contact with the outer edge of bushing 38 in bracket-like portion 3|.

Locking member 46 has squared end portions 49 which are aligned with the hook-shaped ends 45 of bracket members 42 to permit their interengagement when looking member 46 is shifted vertically and rotated axially. Rotation of the locking member effects forcible drawing of shiftable mold section [6 toward stationary mold sec tion 15 due to the lever and crossbar-lik action of the squared end portions 49 of locking member 46, which action is similar to the action of eccentric members when arranged in place of the squared end portions.

The ratio of leverage used in the drawing together 'of mold sections l5 and 16 effects forceful drawing together of these sections and thus eliminates in casting operations deforming and warping of these sections.

In describing the operation of th machine it will be assumed that, as shown in Fig. 2, the machine is in opened-up position ready to be started on a casting cycle. Starting of the machine is effected by the operation of the automatically actuated valve arrangement l9 effectingfeeding of fluid under pressure through pipe 20 into the outer end portion of cylinder-piston member I! and therewith shifting of piston and piston rod 22 and shiftable mold supporting member ll toward the stationary mold supporting member 9 until mold section 15 supported by member I I closely approaches mold section l5 supported by member 9. Atthis time actuating rod member 4i contacts the longer arm 39 of L-shaped lever 32 and tilts this lever so that its short lever arm 35 is shifted out of engagement with outer edge 31 of bushing 38 and free to be shifted through said bushing, thus permitting lost motion between piston rod 22 and shiftable mold supporting member II, which at this time has advanced to bring shiftable mold section l6 into or nearly into contact with the stationary mold section l5. A continued advance of piston rod 22 'effects'actuation of lever mechanism24 coupled with piston rod 22 by the link members 33 of the coupling mechanism 23. This actuation effects shifting of locking member 46 vertically upwardly into engagement with the hook-shaped'ends 45 of bracket members and also rotating of locking member 4f so that a cam-like and crowbar-like action of the squared end portions tightly and forcibly draws shiftable mold section [6 toward stationary mold .section l5, thus preventing deforming and warping of thesesections by excessive temperature variations during casting operations. After a predetermined time interval for casting operations, which interval is controlled-by the setting of ;the automatically actuated valve arrangement mold sections, 'a frame rigidly supporting one of said mold sections and shiftably supporting the other one of said mold sections, mechanism ineluding stationary means on said rigidly supoted to said shiitable mold sec" drawing the mold sections togev or, a s device for the shiftable mold section,

device including a coupling member l'eleas coupling said shifting devi to mold section, and stationary means tacncd to said rigidly supported mold section arranged engage said coupling member an". shift same t release the coupling connection between said shiftable mold section said shifting device when said mold sections closely approach each other.

2. In a machine for making castings a rigidly supported mold section, a sh y supporter mold section movable toward and y irom said first mold section, mechanism. on s id mold sections for forcibly drawing same said no mechanism including stationary means on the rigidly supported mold section and means pivoted to said shifting device for shii section, a coupling secured to said shitting device a shiftable coupling member releasa? y coup said shifting device to said shiitable mold section, and a stationary actuating member for shiftary mold section for releasing the cou nection between said shiitable section nd said shifting device when said mold sections closely approach each other.

3. A machine for making castings as described in claim 2, wherein shiitaTole coupling mer ber consists of an L-shaped lever pi otal y s ported in a slot of the coupling ed 00 said toggle lever means, wherein said shaped lever by gravity action is automatically positioned to engage the shiitably supported mold section and wherein said stationary actuating member effects tilting of said L-shaped 1e for its disengagement from the shii'tably supported mold section when the mold sections closely approach each other.

4. In a machine for making castings, a pair of mold sections, a frame rigidly supporting one of said mold ections and shiitably support ng the other one or" said mold sections, mechanism on said mold sections for forcibly drawing together, said mechanism including stationary means attached to the rigidly supported mold section and vertically shiftable and axially rotatable lever means pivoted with one end to said shiftaloly supported mold section, a shifting device for the shiftalole mold section, a coupling linking said lever means to said shifting device including a, shiitable coupling member releasably coupling said shifting device to said shiftable sect on, and a stationar actuating member for shiita' coupling member atd to said stationar mold section for rethe coupling connection veen said itable mold section and said shhting device when said mold sections closely approach each other.

5. A machine for making castings as described in claim wherein stationary means on said rigidly supported mold section embodies a hookshaped member having its hook-shaped end portion arrange to extend beyond th rear face of the shiitaole mold section when said mold sections are positioned adjacent to each other, wherein said toggle lever -aeans linked to said shiftable mold section embodies an elongated member having long 'udinal axis arranged at a right angle to the longitudinal axis of the said stationary means, said elongated member includa cam-lilze portion arranged to cooperate with the hook-shaped end portion of said stationary means when the mold sections are positioned adjacent to each other to tightly draw the sections toward each other when the elongated member engages the hook-shaped member and is axially rotates with respect thereto.

6. A machine for makin castings as described in claim 4, wherein said stationary means on said rigidly supported mold section embodies a pair of hook shaped members secured to the side walls of said stationar mold section so as to extend with their hook-shaped portions beyond the rear face of the shit table mold section when said mold sections are positioned adjacent to each other, wherein toggle lever means linked to said shiftable mold section embodies an elongated rod arranged at a right angle to said pair of hoolnshaped members, and wherein said elongated memb r extends opposite to the said hookshaped members and includes cam-like portions cooperating with said hook-shaped ends in forcibly drawing the mold sections toward each other and holding same tightly against each other when such elongated rod is axially rotated with respect to said hooloshaped members.

CHARLES F. WILBERSCHIED.

Name Date Maynard Jan. 19, 1932 Dinzl Oct. 6, 1942 Ryder May 18, 1943 Smith Nov. 30, 1943 Rosenlund Mar. 13, 1945 Number

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