US990880A - Molding-machine. - Google Patents

Description

. o. KUCHLING.

MOLDING MACHINE. APPLIUATION FILED JULY 7, 1910.

Patented Ma 2, 1911.

UNITED STATES PATENT OFFICE.

CONRAD KOGHLING, OF HAGEN, WESTPH ALIA, GERMANY, ASSIGNOR T0 VULKAN JOINT-STOCK COMPANY, OF KOIJN-EHRENFELD, GERMANY.

MOLDING-MACHINE.

Specification of Letters Patent.

Patented May 2 1911.

Application filed July 7, 1910. Serial No. 570,762.

Machines, of which the following is a specification.

My invention relates to a turn-over molding machine of the kind in which the turnover plate is mounted in stationary bearings, the mold receiver being adapted to accommodate itself automatically to flasks of different depths, the receiver being adjusted to the level of the flask by means of set screws.

According to my invention the mold re-. ceiver, which is mounted by means of rollers on adjustable rails, is adapted to be raised against the flask by a carrier comprising four upright rods mounted on a spider, the spider being itself carried by a vertical rack bar operated by a pinion and balanced by a weight. The arrangement is such that the mold receiver is raised by the weight against the flask which, when loosened from the turn-over plate, overcomes the gravity of the weight and returns the receiver onto the rails. The upright rods have pointed ends and abut against set screws on the mold re ceiver which, by the adjustment of the screws, can be made to coincide exactly with the level of the flask.

In the accompanying drawings the inven tion is illustrated, Figure 1 representing a front view of the machine, partly in section, Fig. 2, a plan of the same, partly in section, and'Fig. 3, a front view of the arrangement for adjusting the rails.

A bed plate a is provided with slots 7) in which uprights c and d are guided, in known manner, so as to allow of being adjusted for varying their distance apart. Such adjustment is effected by means of a spindle 6 which engages nut extensions 8 on the uprights, one by a leftand the other by a right-hand screw thread. On the upper ends of the uprights c, d, bearings e, f are provided for the reception of the pivots of the turn-over plate g. Underneath the turn-over. plate the mold receiver la; is arranged which is mounted by means of grooved rollers on rails 71 for carrying the completed molds away from the machine. These rails are adapted to be vertically adjusted so as to carry the receiver h at various heights in accordance with the depth of the molding flask. For the purpose of such adjustment, the rails are mounted on bars 2 having downwardly directed arms 1. On these arms a series of hook-shaped lugs 2 are provided which fit into similar, opposinglugs 3 on brackets 7 connected to the uprights 0, d. The spaces between the lugs are wide enough to allow the engagement of the hooks and to admit a bar 4 (Figs. 1-

and 3) for locking the parts together. It is evident from this construction that the lugs can be connected for holding the rails 6 1n varlous positions.

For accommodating the mold receiver to the flask, the following arrangement is pro vided :A standard n is rigidly mounted on the bed plate a; between the uprights c and d. In the center of this standard a vertical rack bar Z is slidably guided, the lower part of said bar, which is passed through the bed plate at, having a slot 9 or a forkedformation through which the spindle 6 can pass without obstructing the movements of'the bar. Connected to. the rack bar Z is a spider k carrying, at the extremity of each arm, an u right rod on having a pointed upper end.

e rods m are guided with their upper parts in a plate carried by the standard it. Slots are provided in the lower part of the standard to admit and guide the arms on the spider 70. On the mold receiver it four set screws 3 are mounted which coincide exactly with the upper, pointed ends of the rods m and which have conical recesses in their lower ends to receive the points of said rods. Hand-wheels in the set screws allow an adjustment of the same.

4 The rack bar is controlled by a pinion p which is slidably feathered on a shaft 0, such shaft being rotatably mounted in bear ings 5 in the standard a and in similar bearings in the uprights c and d. A toothed wheel 9, mounted at one end of the shaft, meshes with a pinion 1 which is connected to a hand lever t and loosely mounted on a pivot s. The latter is partly screw-threaded and carries a nut which can be operated by means of a hand wheel at for securing the wheel '1' to the pivot. On the opposite end of the shaft 0, a grooved pulley w is slidably feathered, a bracket being provided on the upright d for holding the wheel against the latter. The shaft 0 is adapted to slide freely in the bearings of the standard and of the upright d so as to allow an adjustment of the uprights. During such adjustment, the pinion p is guided by the bearings 5 between which it is mounted. The shaft itself follows the movements of the upright a to which it is held by the wheel 9 and a collar o. A weight 0:, suspended on the pulley 'w, is adapted to a little more than overcome the gravity and friction of the rack bar Z and its appurtenances, and also the gravity of the mold receiver h when the latter is supported on the rods m. A load on the receiver, however, returns the same to the rails in opposition to the weight w.

The modus OYJWV/ldi is as follows :-A molding flask is connected in any suitable manner to the turn-over plate 9 which, after the completion of the ramming, is turned around so that the flask becomes suspended over the mold receiver h. v The elements have now the position as shown in Fig. 1, the Wheel 11. having so far-been pressed on the wheel 1' to prevent ara'ising. of the mold receiver by the weightw. As soon as the wheel u is loosened, the weight raises the rack against the flask. Thereupon the set screws y are adjusted so that the flask becomes evenly supported at all sides by the receiver. The wheel a is then re-tightened to give firm support to the flask which is now loosened from the turn-over plate. The mechanism is next set free by loosening the wheel 14, whereupon the receiver h, now loaded by the flask, is pressed down on the rails z in opposition to the weight w, the

' wheel at being used as a brake during this movement. In order to release the receiver h, which is retained by the engagement of the rods m with the recesses in the set screws 3 said rods are lowered by turning the hand lever 25, and the wheel u is again tightened to secure the spider and the rods in lowered position. The receiver h is now free tobe rolled away with its load from under the turn-over plate and is, after the removal of the flask, re-advanced for the reception of a fresh one.

The rails 2' are in each case adjusted to suit the depth of the flask used, and the uprights 0, cl are also adjusted to suit different widths of turn-over plates.

I claim 1. In a molding machine, of the character described, the combination with a turnover plate for holding the molding flask, and a wheeled mold receiver to be advanced under said plate, of a movable carrier which is balanced so as to raise the receiver against the flask and so as to be lowered by the weight of the flask on said receiver, means for accommodating the receiver to the level of the flask, and means for braking the carrier and for securing the same in any desired position, substantially as set forth.

2. A molding machine, of the character described, comprising a turn-over plate for holding the molding flask, a wheeled mold receiver to be advanced under said plate, a standard underneath the turn-over plate, a vertical rack bar guided in said standard, a spider connected to said rack bar, an upright rod on each arm of the spider for engaging and raising the mold receiver, a shaft carrying a pinion for actuating the rack bar, a weighted pulley at one end of said shaft tending to hold the carrier and the mold receiver in raised position as long as the latter is without load, a gearing at the other end of the shaft, means for accommodating the receiver to the level of the flask, and means for braking the gearing and for securing the same with the carrier in any desired position, substantially as set forth.

A molding machine, of the character described, comprising a turn-over plate for holding the molding flask, a wheeled mold receiver to be advanced under said plate, downwardly directed set screws on said receiver, a vertical rack bar, a spider carried by said rack bar, rods on the arms of the spider adapted for end abutment with the set screws on the receiver, a weight-operated shaft with pinion acting on the rack bar and tending to raise the carrier and the receiver against the flask, means for adjusting the set screws so as to accommodate the receiver to the level of the flask, a gearing on the shaft. and means for braking said gearing and for securing the same with the carrier in any desired position, substantially as set forth.

4. A molding machine, of the character described, comprising a turn-over plate for holding the molding flask, a wheeled mold receiver to be advanced on rails under the turn-over plate, means for adjusting the rails in accordance with the depth of the molding flask, a movable carrier arranged underneath the turn-over plate and balanced latter is without load, means for accommodating the receiver to the level of the flask, means for operating the carrier by hand, and means for braking the same and for securing it in any desired position, substantially as set forth.

In testimony whereof I have hereunto signed my name'this 6th day of May 1910, in the presence of two subscribing witnesses.

CONRAD KooHLING. VVitnesses-z ROBERT H. DUNLAP, GERTRUD BONA.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

so as to raise the receiver as long as the

Images