US1598797A - Mold - Google Patents

Description

Patented Sept. 7, 1926.

UNITED STATES CHARLES A. W'OOID, OF CLAY CENTER, KANSAS.

MOLD.

Application filed April 19, 1926. Serial No. 102,943.

My invention relates to new and useful improvements in molds in which castings of different kinds may be formed, and one objcct is to provide a mold of this character which can be readily closed and opened preparatory to forming the casting and discharging the latter.

A further object is to provide a mold with mechanism for facilitating the discharge of the finished castings.

Other objects will hereinafter appear, and in order that the invention may be fully understood. reference will now be had to the accompanying drawings, in which: n

Fig. 1 is an inverted perspective view or the mold closed and with portions of a pair of levers broken away.

Fig. 2 is a plan view of the mold closed and with portions of the levers broken away.

Fig. 3 is an irregular horizontal section on line 3-3 of Fig. 4.

Fig. 4 is an end elevation of the mold.

Fig. 5 is a detail of acore pin and a bushing in which said core pin is slidahly mounted.

Fig. 6 is a detail perspective of a plunger and a core pin.

Fig. 7 is a perspective view of the sections constituting the mold proper in open position and all other parts removed.

Fig. 8 is a broken detail perspective of one of the levers with a transverse arm secured thereto.

Fig. 9 is a detail perspective view of drawbar.

Fig. 10 is a detail perspective view of a presser bar. 7

Referring to the different parts, 2 ant 2 designate a pair of primary mold sections, and 3 and 3' designate a pair of secondary mold sections, which latter, together with the former, constitute the mold proper. The primary sections 2 and 2 are connected at one end by a hinge 4, while the secondary sections 3 and 3 are mounted at their ends upon hinges 5 and 5 connected at their upper portions to the ends of the primary sections 2 and 2, respectively. The secondary sections 3 and 3 are normally held in closed position by coil springs 6 secured at their ends to screws 7 and 8. The screws 7 assist in securing the hinge 4 to the primary mold sections 2 and 2, and the screws 8 assist in securing the lower members of the hinges 5 to the secondary sections 3 and 3 10 and 12 designate a pair of levers mounted upon fulcrums 14 and 16 extending through brackets 18 and 20, secured to the adjacent sides of the primary sections 2 and 2 respectively.

1 22 and 24 designate transverse arms secured to the under sides of the levers 10 and 12, respectively, at the fulcrumed ends of the latter. hen in the position disclosed by Figs. 1 to 4, inclusive, the arms 22 and 24 hold the primary sections 2 and 2 in closed position by pressing against adjustable stops 26 and 28, respectively, projecting from the adjacent sides of said primary sections.

The ends 30 and 32 of the levers 10 and 12 normally bear squarely against presser bars 34 and 36 mounted upon pivots 38 and 40 secured to the brackets 18 and 20, respectively. The free ends of the presser bars 34 and 36 are held against the adja cent sides of the transverse arms 22 and 24 by plungers 42 and 44, which extend through transverse openings in the mold sections 2 and 2, respectively. The plungers 42 and 44 are pressed outwardly against the presser bars 34 and 36 by coil springs 46 and 48 seated in recesses 49 and 49 in the mold sections 2 and 2 and hearing at their outer ends against shoulders 50 and 52 at the outer ends of the plungers 42 and 44, respectively.

V The transverse arms 22 and 24 have core pins 54 and 56secured thereto by screws or other suitable elements 58 and 60, respectively. The core pins 54 and 56 extend through slots 62 in the presser bars 34 and 36 and preferably extend through the same openings in the mold sections 2 and 2 in which the plungers 42 and 44, respectively,

are arranged, to obviate the necessity of forming additional holes in said mold sections.

64 designates a drawbar connected at one end by a pivot 66 to the adjacent end of thetransverse arm 24. Said drawbar 64 has a bifurcated end 68 and registering angular slots 70 into which the ends of a pin 72 project. The pin 72 extends through a core pin 74 slidably mounted in a bushing 76 secured to the mold section 2 by suitable means such as a screw 7 8 which extends through a lug 80 upon said bushing 76. The bushing 76 projects into one end of the mold sections 2 and 2 at their division point, while the core pin 74 projects into the chambered portions 73 and of said mold sections 2 and 2, respectively. The drawbar 64 is slidably held in engagement with the lug of the bushing "76 by means of a guide 82, preferably in-theiormof a screw, which projects through the bifurcated portion 68 of the drawbar teand "is-threaded into the end of the mole section 9f, Fig. 8.

In practice, the molten metal to form the casting is poured into the chambered portions of the mold through a gate 84 in the primary sections 2 and 2, and after the metal has congealed sufiiciently to retain its shape the lever 10 is'swung on its fulcrum 141- in the direction of the arrow a, Fig. 8, carrying the transverse arm 22 therewith and causing it to withdraw the core pin 54:

I from the casting- Continuedmovement of the lever lOcauses its cam face 86' to rock against the presser bar S t and force the free end of the latter towards the mold section 2. This movement of the free end of the presser bar 34 forces the plunger d2 inwardly against the casting which is thereby released from the mold section 2, which latter is swung open on the hinge a as the lever 10 continues to movein the direction of the arrow a until checked by a stop 88 on one of the members of the hinge l con tacting the adjacent member of the hinge 5. Before the movement of the lever '10 is checked as stated, one end of the transverse arm22 is carried against an extension 89 on one member of the ad acent hinge 5,v

causing said member to open the secondary mold section 3.

After the mold sections 2, 2 and 3 have been-opened as stated, the lever 12 is swung upon its fulcrum 16 in the direction of the arrow I), Fig. 3, causing the transverse arm 24 to withdraw the core pin 56 from the casting nowheld inthe chambered: portions of the mold sections 2 and 3 The transverse arm Qd also withdraws the core pin 745 from the casting through the intermediary of the'drawbar 64, the angular slotted portions 70 of which, as-they travel to the left,

Fig. 3, draw'the core pin 74 outwardly through the intermediary of the transversepin 72. The movement of the transverse arm 2d also causes one end thereof to contact an extension on one of the members of the adjacent-hinge 5 and thereby GlIQCtS opening of the mold section 3 against the action of the associate coil spring 6. During themovement of-the lever 12' in the didirections tot-he arrowsa and 6, respectively, the plungers 4L2 and a l being restored to their outward position by the springs loand the core pin 74 being moved to its inward position by the angular slotted portions 70of the drawbar 6d as the same is pushed to the right by the transverse arm 24'. The transverse arms 22 and 24: also push the core pins 54 and 56, respectively, to their inward position.

As the operator only has to actuate the levers 10 and 12, the operation of the remainder of the parts being automatic, it is apparent that the opening and closing of the mold and the proper positioningof the core pins and-plungers can be readily effected, thereby enabling a large number of castings to be produced in a relatively short period of time.

While I have shown and described the preferred construction, combination and arrangement of parts, I reserve the rights to all such-modifications as properly fall within the spirit and scope/of the invention as claimed.

Having thus described my iI1V8I1tlOI1,-Wl1it I claim and desire to secure by'Letters Patent, is: 1 I

1. In a mold ofthe character described,- primary mold sections hinged together, and

secondary mold sections hingedly connected to said primary sections.

2. In a mold. of the character described, primary mold sections hinged together, secondary mold sectionshingedly connected to said primary sections, levers associated with said primary sectionsto-openthe same, and mechanism controlled by said levers for opening the secondary sections.

3. In a mold of the character described,- primary mold sections hinged together, sec ondary mold sections hingedly connected to said primary sections, levers associated with said primary sections to open the same-,- and means controlled by said levers for engaging hinge members of said secondary sec tions to open the latter.

4. In a mold of the character described, primary mold sections hinged together, sec

ondary mold sections hingedly connected to said primary sections, levers associated with said primary sections to open the same, means controlled by said levers for engag ing hinge members ofsaid secondary sections to open the'latter, and spring means for closing the secondary sections;

5. In a mold of the character described, primary mold sections hinged together, secondary mold 'sections, hinges connecting said secondary sections to the primary sections and provided with extensions, levers associated with the primary sections to open the same, and arms secured to said levers and adapted to engage said hinge extensions and thereby open the secondary sections.

6. In a mold of the character described,

two mold sections operably connected to open and close, levers associated with said sections to actuate the same, arms mounted upon said levers, and core pins connected to said arms and projecting into the respective sections from which they are partially withdrawn by the arms when the mold sections are opened.

7. In a mold of the character described, two mold sections operably connected to open and close, levers associated with said sections to actuate the same, core pins projecting into said sections, plungers also projecting into the sections, and mechanisms controlled by the levers for partially withdrawing said core pins and advancing the plungeys when said levers are moved in the direction for opening the mold sections.

8. In a mold of the character described, two mold sections operably connected to open and close, levers associated with said sections to actuate the same, core pins pro jecting into said sections, plungers also projecting into the sections, mechanisms controlled by the levers for partially withdrawing said core pins and advancing the plungers when said levers are moved in the direction for opening the mold sections, and spring means for partially withdrawing the plungers when the sections are closed.

9. In a mold or the character described, two mold sections operably connected to open and close, levers associated with said sections to actuate the same, plungers projecting into said mold sections, and presser bars which force said plungers inwardly as the levers are moved in the direction for opening the mold sections.

10. In a mold of the character described, two mold sections operably connected to open and close, levers having cam faces and associated with said sections to open the same, plungers projecting into said sections, presser bars which are actuated by the cam faces to force said plungers inwardly when the levers are actuated to open the sections, and spring means for partially withdrawing said plungers when the mold sections are closed.

11. In a mold of the character described, two mold sections operably connected to open and close, levers associated with said sections to actuate the same, an arm fixed to one of said levers, a drawbar controlled by said arm, and a core pin projecting into the mold sections and actuated by said drawbar.

12. In a mold of thecharacter described, two mold sections operably connected to open and close, levers associated with said sections to actuate the same, an arm fixed to one of said levers, a drawbar controlled by said arm and provided with an angular slot and a core pin projecting into the mold sections and having an element projecting into said angular slot.

In testimony whereof I mix my signature.

CHARLES A. WVOOD.

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