US2079727A - Automatic battery grid casting machine - Google Patents

Description

May 11, 1937. J wlRTZ 2,079,727

AUTOMATIC BATTERY GRID CASTING MACHINE Filed Dec. 1.4, 1935 2 Sheets-Sheet l May 11, 1937. w|RTz 2,079,727

AUTOMATiC BATTERY GRID CASTING MACHINE Filed Dec. 14, 1935 2 SheetsSheet 2 game 14M Jbizn hQrCz Patented May 11, 1937- UNITED STATES PATENT OFFICE AUTOMAHO BATTERY GRID CASTING momm:

1 Claim.

This invention relates to a machine for manufacturing storage battery plates.

The main object of the invention is to provide a mechanism to automatically cast storage battery plates and to automatically remove the cast plates from the mold.

Another object of the invention is to produce the plates at a comparatively high speed and of uniform quality.

With the above and other objects in view, the invention consists in general of certain novel details of construction and combination of parts hereinafter fully described, illustrated in the accompanying drawings and specifically claimed.

In the drawings:

Figure 1 is a view of the machine with the mold in a closed position.

Figure 2 is a view of the machine with the mold in an opened position.

Figure 3 is a top view of the machine.

Figure 4 is a section on line 4--4 of Figure 1.

Referring now to the drawings in detail, numeral designates the mold, 2 the bed of the machine and 3 the cam to actuate the mold. The mold comprises two members 4 and 5. The member 4 is stationary while the member 5 is movable. A rod 6 connects the member 5 of the mold to the cam 3. The left end of the rod is en larged as at and fits in a sleeve 8. Between the said rod and the face of the member 5 is a compression spring 9. A roller l0 is attached to the right end of the rod which fits in the' cam slot Supporting the free end of the rod is a roller l2 mounted on the bracket l3.

The cam 3 is journalled on the shaft l4 mounted in the housing l5. To the right of the housing is a gear box It containing a set of reduction gears (not shown) for operating the short shaft Slidably keyed to the inward .end of the said shaft is a clutch collar l8 adapted tobe manually operated by the lever l9. Keyed to the adjacent end of the shaft I4 is the clutch 20. Number 2| designates the drive pulley for operating the gears in the gear box 16, 22 the electric motor and 23 the driving belt. The motor is fastened to the base 24 supported by the legs 25 of the machine.

The stationary member 4 of the mold is supported in a vertical position by the pins 26. Behind the mold are a set of adjusting screws 21 to regulate the lateral movement of the mold. In front of the molds is an ejector plate 28 embedded in which is a set of ejecting pins 29 and penetrating the movable mold 5. The outward distance between the mold and the plate 28 is regulated by the bolts 30 screwed in the movable (Cl. 22--5'l) are formed in the sides of the mold members for supporting the said members when they are taken out of the machine. Numeral 35 designates a pair of strips attached to the member 5 of the mold for slidably supporting it in the bed 2 of the machine. Underneath the mold is a curved chute 31 made of resilient material on which the finished plate falls after it leaves the mold. The molds are made hollow and are water cooled in order to keep the temperature down. Nipples 38 and 39 are connected to the molds on which fit the rubber hose 40 and 4|. The cool water enters either of the hose 40 passes through one part of the mold and through the looped hose 4| and thence to the other part of the mold and. out to the other hose 40, thus cooling the mold.

The operation of the machine is as follows:

When the clutch is moved tothe left as shown in Figure 2 the cam will start to revolve move the rod 6 to the left and close the two mold members 4 and 5 together. The molten material is then poured into the mold and allowed to cool for a short interval of time. The-rod 6 will then move to the right and separate the mold member 5 from the member 4. At the same time the compression springs 3| between the plates 5 and 28 will force the plate 28 to the right until the movement of said plate 28 is stopped by the bolt 34 on the left side of the arm 32 when it comes in contact with the rear portion of the bed plate as shown in Figure 2. The plate 5 however keeps on moving toward the plate 28 until a substantial portion of the pins embedded in the plate 24 slide through and protrude through the said plate 5 and force the casting outward of the plate 5 of the mold so the casting can slide down the chute 31.

The cam is so cut that it opens and closes the mold at each revolution and holds the mold closed approximately seventy five per cent of the rotation. The opening and closing of the mold takes effect on the other twenty five per cent of the rotation of the cam. Thus the mold is closed at a sufficient interval to allow the molten material to be poured in. The entire operation of the machine is automatic except of course the pouring of the molten metal. The metal is poured in the funnel shaped opening 42.

It will thus be seen that'I have provided a simple and efiicient device of the kind described and for the purpose specified.

It is obvious that changes may be made in the form and construction of the invention without departing from the material principles involved. It is not therefore desired to confine thednvention to the exact form herein shown anddescribed but it is desired toinclude all forms which come within the scope of the appended claim.

Having described my invention, I claim:

In a casting machine of the class described, a bed having spaced horizontal brackets, a mold mounted on and supported between said spaced brackets and extending below the surface thereof said bed plate and comprising two members one of said mold members being movable and the other mold member being stationary, said movable member having lugs fixed to the sides thereof for slidably supporting the same upon said spaced brackets, a rod for operating said movable member, a movable plate in front of said movable mold member, an arm hinged to said movable plate, said arm bent in a U-shaped formation to clear the said mold, the rear of said arm being opposite a portion of said bed plate and serving as a stop to regulate the extreme movement of said movable plate, an axfiusting bolt at the rear of said arm, means for discharging a molded object from said mold comprising a set of ejecting pins embedded in said plate and slidingly passing through said movable mold members, a set of compression springs interposed between said movable mold member and said \movable plate, said movable plate adapted to move under the influence of the pressure of said springsexerted by said movable mold member, a

chute for conveying ejected objects away from said mold and a set of bolts embedded in said movable moldmember and passing through said movable plate toregulate the extreme distance between said movable mold member and movable plate. 4

' JOHN WIRTZ.

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