DE224277C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 80 «. GROUP

ADOLF SCHMITZ in VIENNA.

Patented in the German Empire on August 30, 1908.

The invention relates to briquette presses with a reciprocating sliding table, double ejector and double filling device, where the to be processed Is well powdered and is formed into compacts by stamping, as opposed to Screw or roller presses, in which the material is doughy and the molds through Screws or rollers is fed. These

ίο known presses for powdery goods have the advantage of double performance over simple sliding table presses. However, they generally have the disadvantage that the powdery material does not always fall into the mold in the same quantities, so that sometimes stronger, sometimes weaker, sometimes firmer, sometimes looser compacts result, which increases the evenness of the product is severely impaired and an automatic

20. Filling the molds for some purposes, e.g. B. for paving slabs, clinker and similar objects, seems useless.

In almost all of these presses, the powdery material falls out of the stationary filling funnel in the stationary form, although experience shows that there are differences in the amount of filling up to occur up to 10 percent.

It is true that presses are also known in which the filling is always the same size Shapes is sought in that special filling boxes accommodate a larger amount of pressed material than is required to make a briquette, most of which then passes through special pre-press ram is pressed into the foimen, while the pre-pressed remainder in the filling box remains and together with the not yet pressed material for the next one Pressing is used.

It is to be feared here that the pre-pressed material will interfere with the loose material during pressing does not bond well, so that cracks and uneven spots can arise in the compacts.

In this mode of operation, the lower press rams can also not be used during the course the machines are cleaned and greased, which is essential for many types of pressed material Condition is.

In addition, the design of the machine is enhanced by the addition of two filling boxes, two Prepressing punches and the associated drive quite complicated.

According to the invention, a uniform filling of the molds is to take place in another way Maintaining the simplest possible design and good accessibility of the ram achieved will.

The construction of the press is essentially as follows: In the middle is the pressing device, to the right and left of them are the two fixed filling hoppers and in the same center line to the right and left of them the hopper the two ejectors, so that the hopper between the Pressing device and the ejecting devices lie. The sliding table carrying the molds is attached in such a way that a shape overlaps each time in the end positions of the table the pressing device is located while the

other shape is above the right or left ejector. When moving of the sliding table comes each time a form from the relevant ejector Pressing device, and ■ it now falls during this movement from between the relevant Ejection device and the pressing device located hopper the powdery Good in this form.

ίο If this movement is always at the same speed takes place, the same quantities of material to be pressed always fall into the mold, as has been the case with numerous tests on machines designed in this way revealed. In addition, the set-up is very simple, since special filling boxes and pre-press rams with their gears are omitted. The accessibility to the press rams during operation is guaranteed by that in the ejection position is not also filled.

With regard to its design differs

So the subject of the invention of known presses in that the two hopper

. are attached between the pressing device and the two ejecting devices, the effect of the fact that the filling of the molds takes place during their movement and thereby becomes uniform and that also the ejecting devices are exposed, which results in good accessibility to the rams, also by the simplification the design with high performance of the machine compared to the known presses that contain double press units or have a special filling box and prepress ram.
On the drawing represents
Fig. Ι the subject of the invention in elevation and longitudinal section,

Fig. 2 in plan and

Fig. 3 shows in side view and in cross section.

1 denotes a sliding table, 2 and 3 the compression molds, 4 and 5 the hopper, 6 one Pressing device, 7 and 8 ejecting devices.

The operation is as follows: In the position shown in FIG. 1, the material to be pressed is in the a mold 3 is pressed together by a pressing device 6, at the same time from the Form 2 ejected by the ejector 7, the previously finished compact.

The sliding table 1 containing the two forms 2 and 3 now moves to the right, so that the now empty form 2 is filled under the hopper 4 and then over the Plunger 6 arrives, while at the same time the molds 3 with the compact under the hopper 5 pass through into the ejection position via the piston 8.

Thereupon the material to be pressed in the form 2 is pressed and at the same time the pressed part ejected from the mold 3 by means of the piston 8.

Then the sliding table moves back to its starting position, with the mold 3 again filled to the pressing device 6 and the mold 2 with the pressed body to the ejecting device 7 arrives, etc.

The ejection of the pressed body can also be done in a known manner by an oblique Level and role take place while the form in which the pressing has just taken place has moved to its extreme position to the right or left.

Furthermore, the pressed bodies can also be ejected downwards.

Claims (1)

Patent claim: Press for the production of briquettes from coal, peat, asphalt, cement powder and the like. with sliding table going back and forth, compression molds on both sides and double ejection and filling device, characterized in that that during the movement of the sliding table one of the forms with the compacts from the pressing device below get through the one hopper into the one ejection position, while at the same time the other, empty molds from the second ejection position pass under the other hopper, in this case filled and so get into the pressing position. 1 sheet of drawings.