DE236782A - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- ΛΙ236782 CLASS 3U. GROUP

actual molding press.

Patented in the German Empire on November 19, 1909.

The invention relates to a hydraulic molding machine that is particularly useful for manufacturing of the molds for radiators is intended and has the purpose of a molding machine create that can be conveniently operated from the front and rear, as shown in British Patent 18488/02. Opposite to This molding machine is an essential part of the automatic clamping and unclamping Advantage achieved in that the achieved by hand compared to the clamping Time saving results in a significantly higher performance of the machine.

This machine is designed in the known way that it consists of a model plate, the sand filling frame and the molding box supporting hydraulic press, over which a cantilever arm is arranged, which the hydraulic

aö Lische liftable and lowerable counterpressure plate in turn carries. This is with a facility equipped for automatic clamping and unclamping on the actual molding press.

In the drawing, the invention is shown on a double molding machine, namely show:

Fig. Ι a side view, the counter pressure plate the left machine raised, that of the right machine clamped to the press is,

Fig. 2 shows a cross section through the counter pressure plate and the press of the machine on the right according to Fig. 1.

Fig. 3 is an enlarged cross-section through the counter pressure plate and the press of the machine left to Fig. 1,

FIG. 4 is a side view of the machine according to FIG. 3.

The molding press consists of the machine body α, the pressurized water piston b, the press table c, which receives the models directly or the model plate, and the sand filling frame d. The molding box e is placed on this.

Above the molding press, the counterpressing plate g is carried by the free cantilever arm f ; it can be lowered and raised hydraulically and at the same time is provided with a device for automatic clamping and unclamping on the molding press. These facilities are built as follows:

On the free end of the cantilever arm f stands the hydraulic piston h, whose lower end, which is extended as a piston rod, carries the counter pressure plate g by means of the round rack i, which also serves as an abutment, and the bracket s. To the guide at

Claims (1)

The two guide rods h ¹ and h ² are used for raising and lowering . In the round rack i engage two symmetrically lying gear pieces, which form one end of the double arms k and k ¹ rotatably mounted around the bolts I and I ¹ . The opposite ends of the latter are also designed as gear pieces that mesh with the gears m and m ¹ . The latter are ίο wedged onto bolts η and n ¹ , which in turn carry the clamping rods ο and o ^1. When the opposing press plate and compression molding press are clamped together, their lower end engages under the projections p and p ¹ provided on the machine body α . The working method with the molding machine is as follows: After filling the sand filling frame d with sand and placing the molding box e , the piston h of the counter press is moved so that the latter lowers and rests on the molding box e . Since the lower end of the piston rod moves further downwards as the piston goes down further through the free space provided for it in the upper part of the counter pressure plate, the round rack i, the double arms k and k ¹ , the gears m and m ¹ , the bolts η and n ¹ as well as the clamping arms 0 and o ¹ in action, in such a way that the latter are automatically pivoted around as a result of the transmission of motion through the parts just mentioned until they come into the downward vertical position and under the approaches p and p ¹ grab. The clamping is now complete and the mold can be pressed by the plunger b. After pressing, the pressurized water is removed from the cylinder of piston b ; then the unclamping takes place in such a way that the piston h of the counterpressure plate is moved upwards, the clamping arms being pivoted upwards first by their moving means and then the counterpressure plate is lifted. Then the molding box can be carried away either to one side or the other of the machine. The godfather is τ-An SPRU c η: Device for automatic locking and unlocking of the hydraulic lifting and lowerable counter pressure plate of a hydraulic molding machine, carried by a cantilever arm, with which the model plate, The actual molding press carrying the filling frame and molding box, characterized in that that on the counterpressure plate two the lateral clamping arms supporting shafts are arranged, which when Put on or remove the counter pressure plate from the molding press each time in this way be rotated so that they bring the side clamping arms up to the molding press or remove and superscript. For this 1 sheet. Drawings.