US1729801A - Die-casting machine - Google Patents

Description

Oct. 1, 1929. A. SEBEK DIE CASTING MACHINE 2 Sheebs-Sheet 1 Filed Feb. 13, 1928 Patented Oct. 1, 1929.

UNITED/ STATES PATENT, OFFICE ALBERT SEBEK, OF OICERO, ILLINOIS, ASSIGNOR '10 KRONE-SEIBEK DIE CASTING &

MFG. 00., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS DIE-CASTING MACHINE Application filed February 13, 1928. Serial No. 253,854.

ually operable means for dipping the ladle into the molten. metal in the melting pot for charging the ladle with the moltenmetal and counter-weighted means for moving and returning the ladle to operative position with its mouth accurately aligned with the gate or opening of a die or mold whereby compressedair may then be forced into the ladleto' deliver the charge of molten metal into the die.

Another object of my invention is found in the provision of an adjustable counter-weight for regulating the pressure with which the mouth or nozzle of the ladle is brought into contact with the gate or die opening.

A further object of the invention is found in the provision of adjustable means ,for accurately and positively controlling the vertical alignment of the discharge mouth of the ladle with the gate or die opening.

A still further object of my invention resides in the construction and arrangement of a mechanism embodying a single manually operable lever for moving the chargin ladle into filling position and counter-weighted means operable upon the release of said lever for raising the ladle and positively locking same in aligned position with the opening of the die or mold.

A further object of the invention is found in thearrangement ofadjustable means for accurately controlling the lateral adjustment of the toggle locking means for the ladle so that the discharge mouth or. nozzle of the ladle may be squarely and tightly held against the opening into the die.

With the above and other objects in view my invention consists in the novel combina tion, construction, and arrangement of the parts and members, shown in the preferred embodiment in the attached drawings, de scrib d 111 the following specification and particularly pointed out in the appended claims.

Referring to the drawing Fig. 1, is a plan View of adie casting apparatus embodying my invention.

Fig.2, is a vertical section taken on line 2--2 of Fig. 1, showing the discharging po- 7 sition of the ladle and also showing by dot and dash lines, the charging or filling position of the ladle and mechanism therefor.

Referring now to the drawing in 'more detail, a molten metal pot 10 is provided which is suitably held into position within the furnace 11 having a lining 12 of fire brick, or the like. a

The gate-opening for the die or mold is indicated by 13.

The ladle or molten metal carrier 14 is provided with an inlet connection 14 for compressed air and with a mouth or nozzle 14:

The upper partof the ladle 14 is alsoprovided with an upwardly disposed integrally cast arm 14 having pivotal connection on the shaft 15 which is securely held in the extensions 16 of the U-shaped yoke 16.- The terminals of the yoke 16 are provided with rollers 16 rotatably mounted on the pins 16. The yoke 16 is also formed with a laterally disposed finger 16 the upper edge of which is adapted to bear against the roller 17 which is supported on the vertically ad-' justable bolt support 18rigidly supported in the lower ends of the links 25. The upper ends of the links 25 are rigidly fixed to the cross pin 26 which is supported upon vertical slots 27 of the cast blocks 27. The blocks or bearings 27 being rigidly held within the ends of the channels 21.

fiupported in bearings 28 on the rear end of in the casting 19. The rollers 16 have latthe furnace 11 is a shaft 29 which is operatively connected to the pin 24 by means of a toggle which comprises a U-shaped crank 30 and the ears 14.

The bearings 28 for the shaft 29 and toggle are laterally adjustable by means of screws 33 and stud bolts 34 to insure a tight and ac.- curate engagement of the ladle mouth or nozzle 14 with the die opening 13.

The ladle 14 is held in positive discharge position, as shown by the full lines of the illustrations'by means of a counter-weight 34 which is adjustably mounted upon the outer ends of the bars 35, the inner ends of which are removably locked between the lower lugs 14*, formed integrally with the ears 14 and the upper laterally disposed arms 14 cast integral arm 14. Lateral displacement of the bars from the lugs 14 and arms 14 is prevented by recessing both bars and the lugs 14 and arms 14*" as shown in Fig. 2.

The shaft 29 is extended on one side to provide a connection for the operating lever 36 which is rigidly fixed thereto.

In the drawing, the ladle 14 is shown in operative position to discharge its contents of molten metal through its nozzle 14 into the die openin 13 and as above pointed out, the nozzle 14 is held tightly against the die opening 13 by means of the toggle at its rear end.

The nozzle 14 is also held in proper or accurate vertical alignment with the die opening 13 through the instrumentality of the ladle arm 14 and its co-operating yoke 16 which is normally held in upper position by the counter-weight 34 and which yoke is limited in its pro r uppermost position by the contact of its Edger 16 against the roller 17. It is therefore readily apparent that the vertical adjustment of the'nozzle 14 may be controlled by the adjustment of the nuts 18 which are screwed on-the bolt support 18.

The operation of filling the ladle'14 with the molten metal in-the scribed as follows I An upward movement of the free end of the operating lever 36 from the position shown by dotted lines Fig. 2, will cause}; break in the toggle by reason of the upward movement of the crank 30 which is rigid with the operating shaft 29 and through the links 32 will cause a rearward movement of the ladle 14. In such initial rearward movement, the ladle nozzle 14 will be moved substantially laterally away from the die opening 13, until the rollers 16 reach the end 6 of their lateraltravel in slot Also, durpot 10 may be de-' in such rearward movement, the ladle 14- wi 1 be supported at its rear end upon the pivotally mounted links 25 and the upper rear end of the ladle will of course move in a slight arcuate path about the pivot'pin 26. Continued upward movement of the operating lever 36 will, when the rollers 16 reach links 25 and yoke 16 will assume the positionsshown by dot and dash lines when the ladle 14 is in its filling position.

When the ladle 14 has been filled with the molten metal, the raised operating lever 36 may be gradually allowed to lower under the downward pressure of the counter-weight 34 and the several parts and members will again be brought into the positions shown by the full lines in the drawings wherein the mouth or nozzle 14 will be brought into accurate position against the die opening 13. The contents of the ladle 14 may then be discharged through the nozzle 14 into the die by compressed air ing 14.

I claim v 1. Ina casting apparatus, the combination of a molten metal container, a hollow ladle adapted to be filled with molten metal from said container throu h an integrally formed nozzle, said ladle fiaving a pivotal support at its rear end and a pivotal connection at its front end located above the top of the ladle, gravity means for retaining said ladle in raised discharge position with,its nozzle in accurate position against a die inlet opening, and means for raising said gravity means to cause said ladle to move rearwardly and downwardly into filling position with its nozzle into the molten metal of .said container. 4

2. In a casting apparatus, the combination of a molten metal container, a hollow ladle having a filling and discharge nozzle, pivotal means for supporting said ladlejn filling and passed through the ladle opendischarging positions, gravity means for re-- taining said ladle in raised discharging position, operating means adapted to resist said gravity means to lower said ladle into fill-l mg position to permit a flow of the molten metal therein through said nozzle, and separate means adapted upon the release of said operating means to positively limit the movementv of said ladle into its uppermost posiclaim 2, wherein said separate means is vertically adjustable to afford an accurate adjustment of said nozzle relatively to the inlet opening of the die.

4. In a casting apparatus, the combination of a molten metal container, a hollow ladle I having a filling and discharge nozzle, pivotal means for supporting said ladle in filling and discharging positions, gravity means for retaining said ladle in raised discharging position, manually operable means adapted to resist said gravity means to lower said ladle into filling position to permit a flow of the molten metal therein through said nozzle, crank means operatively connected to said manually operable means for reciprocating said ladle int-o filling and discharging positions, and separate adjustable means for positively limiting the movement of said ladle into its uppermost position against the pressure of said gravity means whereby said nozzle will be accurately aligned vertically with respect to the inlet opening of a die.

5. A casting apparatus as embodied in claim 4, and including means for laterally ad- .justing said crank means to afford an accurate having a filling and discharge nozzle at its front end, frames supported along the sides of said container, a pair of pivotally mounted links depending from said frames, means at the rear end of said ladle for pivotally supporting said ladle at the lower ends of said links, gravity actuated means supported on said ladle and extending rearwardly thereof tending to retain said ladle normally in raised discharging position, operating means operable to resist said gravity actuated means to lower said ladle into filling position within said container to permit a flow of the molten metal therein through said nozzle, crank operated means coacting with said operating means whereby said ladle is moved into and out of filling position, and means supported above said container whereby the movement of the end of said nozzle is controlled and guided so that during the movement of the ladle into filling position said nozzle end will initiallyvbe moved-laterally and then downwardly into the molten metal.

7. In a casting apparatus, the combination of a molten metalcontainer, a ladle having a discharge nozzle, means above said container for pivotally supporting said ladle, a counter-weight secured to said ladle and tending to retain said ladle in raised position, operable means connected to said ladle and adapted to resist the pressure of said counterweight to cause a rearward and downward movement of said ladle into filling position within said container, and means pivotally connected to said ladle to control and guide its movement into filling position whereby the nozzle of said ladle will be first moved laterally from discharging position and then downwardly and rearwardly as theladle assumes filling position. v

8. A casting apparatus as embodied in claim 6 and including vertically adjustable means for limiting the uppermost position of the end of said nozzle. 7

9. A casting apparatus as embodied in claim 7, and including vertically adjustable means for limiting the uppermost position of the said nozzle to thus accurately align the discharge mouth of the nozzle with the inlet opening of the die. f

10. In a casting apparatus, and in combination, a molten metal container, a ladle having a discharge nozzle, means for pivotally supporting said ladle above said container, a counter-Weight support extending rearward- .ly from said-ladle, a counter-weight adjustsaid counter-weight being adapted to'retain said ladle in raised discharging position, an operating lever operatively connected to said ladle and adapted to resist the pressure of said counter-weight to cause rearward and downward movement of said ladle into filling position within said container, and means pivotally connected to said ladle to guide its movement into filling position whereby the nozzle of said ladle will be moved first laterally from discharging position and then downwardly and rearwardly as the ladle as-Q sume's filling position.

11. In a casting apparatus, and in combination, a molten metal container, a ladle having a discharge nozzle, means pivotally mounted above said container for supporting said ladle, a counter-weight connected to said ladle and arranged to support said ladle with its discharge nozzle against the inlet opening of a die, a lever operatively connected to said ladle and adapted upon movement to resist the pressure of saidicounter-weight during the rearward movement and tilting of said ladle into filling position, a yoke .pivotally mounted above said ladle, means for pivotally connecting said ladle to said yoke, and means for guiding and limiting the lateral movement-of said yoke and permitting its pivotal movement at the inner end of its lateral movement whereby the nozzle of said ladle will be .be vertically aligned with the inlet opening of the die.

13. In a casting apparatus, and in combination, a molten metal container, a hollow ladle having a compressed air inlet anda discharge nozzle, a pair of links pivotally sup- Y ported above said container and pivotally connected to said ladle arranged to support said ladle during filling. and discharging positions, a counter-weight support mounted on said ladle, a counter-Wei ht adjustably mounted on said counter-weigd support, the pressure of said counter-weight tending to retain said ladle in raised discharging position, an operating shaft, an operating lever connected to said shaft, a crank for said shaft, a link connection for connecting said crank with said ladle, said linkconnectionand said crank adapted to'move said ladle against the pressure of said counter-weight about its pivotally mounted supporting links rearwardly into filling position responsive to'the movement of said operating lever, an upwardly disposed. arm rigid with said ladle, and -pivotally supported guiding means pivotally connected to said arm arranged to guide said ladle in its movement into discharging position whereby the nozzle of said ladle will be moved first upwardly and forwardly in a curved path and then laterally'into engagement with the inlet opening of the die.

14. 'A casting apparatus as embodied in claim 13, and including said pivotally supported guiding means comprising a yoke having its pivoted ends supported within slots of rigidly supported bearings, an extension on said yoke, and adjustable means for limiting the uppermost position of said extension.

In witness whereof I-aflix my signature.

' Y ALBERT SEBEK.

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