US1698603A - Of pennsyl - Google Patents

Description

Jan. 8, 1929. 7 1,698,603

A. L. MOORE DIE STRUCTURE FOR THE MANUFACTURE OF HOT TOPS Filed Aug. 19, 1927 4 Sheets-Sheet l INVENTOR Ausl'i'n L. Moore his anforne j A. L. MOORE DIE STRUCTURE FOR THE MANUFACTURE OF HOT TOPS Jan. 8, 1929. I 1,698,603

Filed Aug. 19, 1927 4 Sheets-Sheet 2 15 PM J4 /19 15/ FIG. 2 FIB.3.

gall/ 1 35. H 9 9 /7 INVENTOR his nrHo r11 e7 Jan. 8, 1929. 1 ,698,603

I A. L. MOORE DIE STRUCTURE FOR THE MANUFACTURE OF HOT TOPS Filed Aug. 19; m7 4 Sheets-Sheet INVENTOR Au s'Hn L. Moore 13;

his a-Hor-neq Jan. s, 1929.

A. L. MOORE DIE STRUCTURE FOR THE MANUFACTURE OF HOT TOPS Filed A g- 19. 1927 4 Sheet.s$heet 4 FIG.

Aus'f'in L. Moore itatented Jan, 8, 1929.

sites stares PATENT t AUSTIN L. MOORE, OF UNIONTOWN, PENNSYLVANIA,-ASSIGNQI-L TO EUREKA FIRE 'BRICK WORKS, OF PITTSBURGH, PENNSYLVANIA, A COEIEOBATION'OF PENNSYL- VANIA.

DIE sTnUoTUaE For; THE manurncaunn or HO Tors.

Application filed August 19,1927. Serial No. 214,090.

This invention relates to an improvement in the manufacture of hot'topsfor ingot molds.

Ihe hot topsare composed of heat resisting material, such as fire brick, fire clay, and other cementitious substances, which are molded into the desired shape when the same is plastic. The purpose of this invention is to simplify the forming operation in order that the hot tops may be made more economically. Machine presses are used in the manufacture of som'ewhat similar articles, such as seggars. The presses have an outer die within which the plastic substance to be formed is placed. Arrangedto move into theouter, or female forming die, is a plunger, or male die, which is forced down into the plastic substance causing it to flow to the desired form.

Pressing seggars to form is relatively sim- "ple.

tical, the plunger die may be readily withdrawn and the seggar easily removed from within the outer die casing. seggar, or similar presses, to the manufacture of hot tops several novel features must necessarily be added to the press to make the operation practical. This, is necessary because hot tops have sloping portions on their outer wall; that is, the outside surtaceof the hottop spout, which fits into the ingot mold, has an opposite taper tromthe vertical than the taper ot'the inside surface of this portion of the hot top. Owing to the double taper which is desirable in many types of hot tops, it has been found impossible to press them with one operation by usinga solid outer die casing. Even though. the hot tops do not have a double taper they have seat portions or flanges which present a dihiculty 1n the presslng op--.

eration similar to that encountered when pressing a double tapered wall.

The object of this invention is to provide a combination of dies which will form a hot top in one pressing thrust of a plunger.

Another objectof the invention is to provide dies which may be readily adapted to "any press, and which will form a hot top in one reciprocation of the plunger, and leave the hot to so'tormed that it may readily be removed rom the outer die. v

In the drawings Figure 1 is anisometric view of a seggar press showing the dies of the present invention attached thereto; Figure 2 is a vertical section'through the plunger and dies, showing the same at the start of the As the side walls of the same are ver In adapting forming operation; Figure 3 shows a similar view of the-dies at the end-ofthe forming stroke ofthe plunger; Figure-4 is another similarview showing the position of thedies and plunger removed from the -formed hot top Figure 5' is a view'taken on the line 55 of Fig. 4,; Figure 6 is' a verticalsectional-view through a set of dies of a slightly modified structure; Figure 7 is avertical sectional view-oi a formedhottop with the pouring hole out in the top web portion; Figure-8 is a top plan view o't'a die mold showing a modified loose ring and means for fastening the same; and Figure 9 is a sectional viewt-a-ken on the line 99 of'Fig. 8. V

In the drawings the referencenumeral 1 designates the frame of presshavinga slidable bed 2, and a vertical sliding head 3 which carries a top plate 4 to which any plunger or die may be attached;

in Figure 2 the forming partsof-t'he-ma-" ch ne are shown in section; An outer die casing 5-fitsover a platen, which restson the bed 2 of the press. Loose-ring *7 fits intothe outer die casing '5, substantially as shown,

is tormedbottoin up since the-inner walls converge toward the T top 7 of the same in its upright position. The loose ring 7is p'osi-= tioned and locked in the casing 5 by:means of a plurality of pins Q'Which fit-into apertures 10 in the saidcasinga- A locking-ring 11 is placed in the upper-edge of easing 5 and maintained in its-placebymeansof an, annular plate 12, The-locking ring 11 has apertures 13 sp-aced to match apertures 10in the die casing. When the-loosering/7 iis properly positioned, the look ringll may be slightly turnedbymeans of a handle l l to lock the ring'in place, Several reach-rods 15 are fixed in thelooseming 7 andipass upwardly through the top plate 4:; As'the reach rods pass loosely through the-top plate=the loose ring is not moved by the downward thrust of the plunger-19 from its position as shown ill-Fig; 2. However, after theplunger 1-9 has descended on the plasticcomposition 17 and pressed it'intothle form of hot top :18, the lock ring is-turned' back so that its. apertures coincidewith apertures 10of the easing. Asthe topplate 4, carryingiplunger die 19, is raised, the nuts l'ti on reach-rods 15 engage topplate 4c and theioose is was operation.

withdrawn, leaving the formed hot top 18 in the casing 5 as shown in Fig. 4. From this position the formed hot top may be readily removed and-the dies set for a repeated The method of removal is ex plained in conjunction with Fig. 9.

Figure 6 shows a slight variation in the die arrangement. The loose ring 20 has the inner wall 2O tapered. A greater seating ridge may be had, if desirechby sloping the outer Wall outwardly for a short distance. The said sloping may be accomplished by bolting a ring 21, having tapered sides 21 in the die casing 5. 7 In Figures 8 and 9 a modified form of loose ring is shown. The said ring comprises two sections 25 and 26 which seat in die casing 27 substantially as illustrated. A plurality of pins 28 pass through the die casing 27 and into holes 29 in loose ring sections 25 and 26,

and serve as means to lock the said sections in the casing 27. The die casing sets over a plate 6 as .in the other forms of dies previously described. After the hot top 30 is pressed into form and the plunger die withdrawm the sections 25 and 26 are removed. The table 2 may then be slid over a jack plate 81 which is raised by means of a rack and pinion 32 to remove the hot top from the die casing.

The circumferential shape of the hot top is immaterial to this invention since the'dies could be shaped to any desired form in cross section. It should be noticed that the plunger does not descend all the way through the material to the plate 6. This leaves a web portion 18 'in the to of the hot top. Open ing 18 may be easi .y cut or pressed in this web or the entire web may be removed if so desired. What I claim is: 1. In die construction for the forming of plastic materials the combination of a female forming die, a male forming die, a

shaped annulus secured in the female forming die, an annular die member arranged to be seated in 'the female die and loosely attached to the male die, and means for locking the annular die member in the female die.

2. In die construction for the forming of plastic materials the combination of a female forming die, a male forming die, a shaped annulus secured ,in the female die, and an auxiliary die member removably supported in the female die.

In die construction. for the forming of plastic materials the combination of a female forming die, a male forming die, a shaped annulus secured in the female die, an auxiliary, die member removably supported in the female die, and means for locking the auxiliary die member in the female die.

4. In die construction for the formingof plastic materials the combination ofa fe male forming die, a male formingdie, and

6. In die construction for the forming of plastic materials the combination of a female forming die,'a male forming die, and an auxiliary fema-ledie member within the female die and loosely attach-ed to the male die.

7. In die construction for the forming of plastic materials the combination of a female forming die, a male forming die,,an auxiliary female die member within the fe male die and loosely attached to the male die, and means for locking the auxiliary die member in the female die.

8. In die construction for the forming of plastic materials the combination of a female formmg die, a male formmg d1e, and an annular female d1e portion arranged to be removably seated in the female forming die before the entry of the male die.

9. In die construction for the forming of plastic materials the combination of a fe male forming die, a male forming die, an annular female die portion arranged to be seated in the female die, said annular female dieportion being loosely attached to the male forming die, and means for locking the annular female die portion in the female die.

10. In die construction for the forming of plastic materials thecombination of a female forming d1e, a male forming die, and an aux1hary female die member removably supported in the female forming die.

11. In die construction for the forming of plastic materials the combination of a female forming die, a male forming die, an auxiliary female die member removably supported in the female forming die and loosely attached to the male forming die and means for locking the auxiliary die member in the female forming die.

12. In die construction for the forming of plastic materials the combination of a female forming die, a male forming die, a shaped annulus in the femaleforming die, an auxiliary female diemember loosely attached to the male die and arranged to be seated in the female die, lugs on the auxiliary die-member.

forming die,a male forming die, a shaped 10 annulus secured in the female forming die,

and an annular die memberarranged to be seated in the female die and loosely attached to the male die. In Witness whereof, I hereunto set my 15 hand.

AUSTIN L. MOORE;

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