US1909253A

US1909253A - Casting-die

Info

Publication number: US1909253A
Application number: US496854A
Authority: US
Inventors: Clyde E Claus
Original assignee: DOEHLER DIE CASTING CO
Current assignee: DOEHLER DIE CASTING CO; DOEHLER DIE-CASTING Co
Priority date: 1930-11-20
Filing date: 1930-11-20
Publication date: 1933-05-16
Anticipated expiration: 1950-05-16

Description

3 Sheets-Sheet 1 INVENTOR Clyde Z. 674 as d AQ;

CASTING DIE c. E. cLAus Filed Nov. 29, 1930 May 16, 1933.

ATTORNEY May 16, 1933. QE. cLAus 1,909,253

CASTING DIE Filed Nov. 20, 1930 5 Sheets-Shed 2 ATTORNEY c. E. CLAUS May 16, 1933.

CASTING DIE Filed Nov. 20, 1930 I5 Sheets-Sheet 3 INVENTOR ZZyde-Z. C'Zaa BY ATTORNEY jections rable halves,

cured in an ejector plate so that the pins are operated by the ejector plate. V The ejector plate consists of two plates 10 and llsecured together. The ejector pins extending through the body part extend through only the plate 11, the conical head of the ejector pins being countersunk in the inner surface of the plate and firmly secured between the twvo plates. The ejector plate is operated by two racks 12 which extend into an ejector box 13 which is secured to the body part 1 The ejector boxis secured by fillister ead screws 14 which extend through proformed on the ejeetorbox and abut against the surface of the body part. The projections formed on the ejector box also serve as guides for the ejector plate which is provided with projections 16 extending between the pro ections 15 of the ejector box. 7

In'each of the cavities formed in the body and cover parts there is a replaceable unlt mold. Each unit mold comprises two sepaa half mold 17 which fits into the portion of the cavity in the body part, and a half mold 18 which fits within the corresponding portion of the cavity in the cover part. The half molds 18 are properly located in the cover part by dowel pins 19, and'are secured in place by machine screws 19'. Each of the unit molds constitutes a separate and distinct mold and they may all have similarly shaped mold impression or each may have a differently shaped mold impressi on as shown in Fig. 2. Each unit mold as, however, a gate 20 extending between the edge of the mold impression 21 and the edge of the unit mold. These gates are adapted to be aligned with the radial gates in the cover part of the supporting mechanism. In the unit molds shown in Figs. 1 and 4 to 8, a core 22 is secured to the unit half mold 18 by a machine screw 23 and extends into the mold impression in the unit mold when the die is closed. Core pins 24 are also provided for the holes in the ends of the flange of the casting 25 shown in the unit mold. These core pins extend through the half mold 17 the heads of the core pms'being countersunk in the surface of the half mold and secured in place by a plate 26 which is secured to the surface of the half mold 17 by screws 27. The opening 28 in back of the casting in the unit mold is closed by a plug 29 which has a shoulder 30 that limits the inward movement of the plug. The plug is held in place by the plate 26.

' The end of the half mold .17, opposite to the cover die, is hollow and has diametrically opposed slots 31 and constitutes a frame or an ejector box. Eachof the unit molds is provided with an ejector plate 32 similar to that described in connection with the supporting mechanism and with a plurality of ejector pins 33 which extend through the half vcarriage 45 which rides upon mold 17 and are secured at their ends in the ejector plate. Guide pins 34 extending from the ejector plate oppositely to the ejector ins are provided for guiding the ejector. p ate. The ejector plate 18 also provided with projections 35 which extend into the slots 31 of the umt mold ejector box and act as guides.

The ejector lates of the several units are operated by t e ejector plate of the supporting mechanism and for this urpose there is provided an ejector rod 36 or each unit mold which is secured at one end in the ejector plate-of the unit mold and extends into an opening 37 in the ejector plate of the supportin mechanism. The ejector rod of a unit mol at the end which enters the e ector plate of the supporting mechanism, is provided with a reduced portion 38 that constitutes a keyway. A key 39 which is slidably mounted in a groove between the plates 10 and 11 of the supporting mechanism ejector plate engages the reduced portion of the ejector rod of the unit mold and secures the ejector rod tothe ejector plate of the su porting mechanism..

- When" t e die is closed and in position to receive molten metal the ends of the ejector pins extending into'the die should be level with the surface of the mold impression therein. In order to insure that the pins are properly located, adjustable set screws 40 are provided on the ejector box of the supporting mechanism. These set screws limit the movement of the ejector plate in a direction to withdraw the ejector pins and may be adjusted to properly locate the ends of the :ejector ins and secured in place by lock nuts 41. it'hin the ejector box, there is a transverse pinion shaft 42 which is journaled therein. The pinion shaft engages the racks 12 which are secured to the ejector plate of the supporting mechanism, the end of'the racks extending through one of the plates 10 and being firmly secured between the plates. One end 43 of the pinion shaft extends beyond the ejector box and is squared to receive a handle havin mentary socket, and by means 0 which the ejector plate may be operated manually.

On one of the sides of the body part 1 of the supporting mechanism as shown in Fig. 9, there is mounted a pair of racks 44 which extend laterally therefrom, one end of the racks extending into openings in the side of the die and being rigidly secured therein. Extending between these racks there is a the racks.

The carriage carries a transverse pinion shaft 46 which engages the teeth of the racks and by means of which the carriage may be moved along the racks. Between the two racks there is a hole extending through the body part to the adjacent cavity in the body part. This hole is adapted to receive a latgral core pin 47 which is secured to the cara comple- 2 5 49. This lateral core pin is a to be made is to have.

riage by means of a plate 48, the head of the core pin being countersunk in the inner surface of the secured to the side of the carriage by screws apted to be used when the castin a transverse hole. n such a case the unit mold will have a radial hole which will be adapted to be aligned with the hole for the 1 core pin in the body part of the supporting mechanism. When the casting is to be removed from the die, the carriage is actuated through the pinion shaft 46 to remove the core m from the casting which may then be e ected from the die by the ejector ins. It is obvious, of course, that there may a lateral core pin for each of the cavities in the die, if deslred.

From the above description of the em- 2 bodiment of my invention shown in the made in the details of the embodiment described above by those skilled in the art without departure from the principle and, spirit of my invention as defined in the ap-v pended claims.

I claim:

1. For a casting-die providedwith a cavity for a removable mold unit and including e ector mechanism, a replaceable mold unit designed for the cavity in the casting-die, and an ejector mechanism for the mold unit adapted to be operated in unison with the first mentioned e ector mechanism.

2. For a casting-die including a cover art and a body part having aligned cavities therein for a removable mold unit and an ejector plate, a replaceable mold unit comprising two separable half molds, ejector pins for ejecting'a casting from the. mold impression, an ejector plate for operating the ejector pins, and means for removably securing the ejector plate of the unit mold to the first mentioned ejector plate.

3. A casting-die comprising a supporting member having a plurality of cavities and being gated to distribute metal to the several cavities, ejector mechanism for ejecting a casting from the supporting member, a replaceable mold unit having a mold impression in each of the cavities in the supporting member, ejector mechanism for each of the mold units for ejecting a casting from the mold impresison, and means for operating plate 48 and the plate being the ejecting mechanism of the mold units in unison with the ejector mechanism of the supporting member.

4. A casting-die comprising a supporting member having a plurality of cavltles and being gated to distribute metal to the several cavities, ejector mechanism for the supporting member for ejecting a casting from the supporting member, a replaceable mold unit having a mold impression in each of the cavities in the supporting member, ejector mechanism for each of the mold units for ejecting a casting from the mold impression, and means for connecting the ejector mechanism of the unit molds to the EJ861201 mechanism of the supporting member to be operated thereby. g

5. A casting-die comprising a supporting mechanism having a plurality of cavities and being gated to distribute metal to the severalcavlties, ejector pins for ejecting a,

casting from said supporting member, an ejector plate for operating the ejector pins, a replaceable mold unit in each of the cavi ties in the supporting member, each mold unit having a mold impression therein, and ejector pins for ejecting a casting from the mold impression, and means for connecting the ejector pins of each of the mold units to the ejector plate of the supporting mecha- 'nism to be operated thereby.

6. A casting-die comprising a two part supporting member havin a plurality of cavities therein and including a body part and a cover part, each part having a portion of each cavity therein, ejector pins for ejecting a casting from the supporting member,

an ejector plate for operating the ejector pins to which the ejector pinsare secured, a replaceable mold unit for each of the cavities in the sup orting member, each replaceable mold unit mcluding a half mold in the portion of the cavity in the body part of the supporting member, a half mold in the portion of the cavity in the cover part of the supporting member, ejector pins for ejecting a casting from the mold unit, and an ejector plate for operating the ejector pins to which the ejector ins are secured, and means for connecting t e ejector plate of the mold unit to the ejector plate of the supporting member to be operated thereby.

7. A casting-die comprising a supporting member having a plurality of cavities therein, an opening for the molten metal and a plurality of gates extending from the opening to the cavities, ejector pins extending through the supporting member along the gates for ejecting cast metal from the supporting member, an ejector plate for operating the ejector pins towhich the ejector pins are secured, a replaceable mold unit in each of the cavities in the die having a mold impression therein and a gate ada ted to be aligned with the gate in the die leading from member and including ejector ejecting supporting member,

. ing means for operating the ejector plate of the supporting member.

8. A casting-die comprising a two part supporting member having a plurality of cavities therein and including a body part and a cover part, each part having a portion of each cavity therein, the cover part having an opening therethrough for the molten metal, the complete supporting member having gates extending from the opening in the cover die to the several cavities, ejector pins extending through the supporting member along the gates therein for e ecting a casting from the member, an ejector plate to which the ejector pins are secured for actuating the ejector pins, a replaceable mold unit for each of the cavities in the supporting member, each replaceable mold unit including a half mold in the portion of the cavity in the body part of the supporting member, a. half mold in the portion of the cavity in the cover part of the supporting member, each mold unit having a mold impression therein and a gate extending from the mold cavity to the edge of the mold unit and adapted to communicate with the gate extending from the opening for molten metal in the cover part of the supporting member to the receptacle, ejector pins for ejecting a casting from the mold unit, an ejector plate for actuating the ejector pins, and means for connecting the e ector plate of the mold unit to the ejector plate of the supportin member, and an ejector box secured to t e supporting member and having means for actuating the ejector plate of the supporting member.

9. For a casting-die including a body part and a cover part and havin a cavity formed partly in each part 'thereo for a removable mold unit and being gated to distribute metal to the cavit a replaceable mold unit designed for t e cavity in the casting-die, the mold unit comprising a body portion and a cover portion each having a ortion of the mold im ression of the unit t erein and the mold unit being gated to receive metal distributed to the cavity in the casting-die.

10. For a casting-die including a body part and a cover part and having a cavity formed partly in each part thereof for a removable mold unit and being gated to distribute metal to the cavity, a replaceable mold unit designed for the cavity in the casting-die, the mold unit comprising a body portion and a cover portion each having a portion ofthe mold impression of the unit therein and the mold unit being gated to receive metal distributed to the cavity in the castin -die, and ejector mechanism for the unit mol mounted in the body portion thereof.

11. A castin -die comprising a su porting member inclu mg a cover part and a body art each having a plurality of ali ned cav- 1ties therein and one of the parts being gated to distribute metal to the several cavities,

and a replaceable mold unit in each of the cavities in the supporting member and each including a cover part received in the cavity of the cover part of the supporting member and a body part received in the cavity in the body part of the supporting member and each part of the mold unit having a portion of the mold impression therein and one of the parts being gated to receive metal distributed to the cavity in the sup rtin member.

12. For a casting-die including a body part and a cover part and havin a cavity formed partly in each part thereo for a removable mold unit and being gated to distribute metal to the cavity, a rep aceable mold unit designed for the cavity in the casting-die, the mold unit comprising a body portion and a cover portion each having a portion of the mold impression of the unit therein and the mold unit beinggated to receive metal distributed to the cavity in the casting, an ejector plate slidably mounted in the unit, e ector pins extending therefrom and adapted to extend into the mold impression, and connecting means secured to the ejector plate and adapted to be secured to the ejector actuating mechanism of a casting-die.

13. In a castin machine, in combination, a pair of relative y movable die supports, a plurality of individually replaceable unit molds, each comprising complementary members removably carried respectively by said supports, means for relatively moving the supports to open and close the molds, and means for simultaneously ejecting the castings from all of the unit molds, comprisi ejecting mechanism forming a part. of eacunit, and a single operating means common to all of said mechanisms, each unit ejecting mechanism being com osed of separable parts so that the part pecu or to a particular die member may be removed with said member when a substitution is made, and the other part may remain in the machine for coaction with the substitute die member.

In witness whereof, I hereunto subscribe my signature.

CLYDE E. CLAUS.