DE1250724B - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Int. Cl .:

B 02c

GERMAN

PATENT OFFICE

EDITORIAL German class: 50 c-U / 20

Number: 1250 724

File number: P 33384 ΠΙ / 50 c Filing date: January 16, 1964 Opened on: September 21, 1967

The subject matter of the invention is a twin roller squeegee mill in which there are twin grinding rollers on a common grinding table roll off, each of which are individually loaded by pressing means for evasion upwards can.

Twin roller squeegee mills are known, the grinding rollers of which are arranged on an arm of an angle lever which can be pivoted out under pressure from pressure means. Here practice on the ground According to the laws of levers, the inner roller exerts a greater grinding pressure than the outer grinding process. Here is disadvantageous that the,- Roles cannot be set independently of one another, according to the respective material cushion, so that the roles do not are equally involved in the MaM process.

Therefore, in an invention that has not yet been published in print, the proposal was made to arrange the rolls in such a way that that of Pressing means applied grinding pressure between the twin rollers takes effect and each of the rollers can thus adapt to the respective material cushion. Here it has proven to be disadvantageous that the transmitted grinding forces of the twin rollers were equal to one another, although the the outer twin role has more work to do than the inner one. r t: ·! . ·, ·. ·,.,

In a further known twin roller type, there is even an arrangement of the pressing means hit in such a way that with them the pressures of the individual twin rollers on the grinding pathi% ühl \ veise can be set differently. Since in this construction the twin roles are in operation around one Rotate the vertical axis and one and the same roller briefly works once inside and the other outside, the possibility of influencing the roller pressures individually cannot bring about an increase in the grinding capacity.

In an effort to avoid the aforementioned disadvantages, according to the invention are in a mill with the grinding table driven in a known manner, the twin rollers each on a common axis stored, which is fastened in a stationary, but pivotable in the vertical direction guided horizontal crosspiece, on which the pressing means in such a way attack that the resulting force application point in the direction of the common twin roller axis is changeable.

According to a further step of the invention, it is possible to reduce the pressures of the two on circular paths Twin rollers moving with a constant radius can be set differently at will. this will Twin roller grinder with driven grinding table

Applicant: Polysius G. m. B. H.,

Neubeckum (Westphalia), Graf-Galen-Str. 17 ^: Named as inventor: Stephan Walterfang, Neubeckum (Westphalia)

preferably achieved in that each transverse web of the roller pair carrier at both ends with two <■ tie rods are provided, which are articulated at their free end with a cross strap on which the 'point of application of a tension spring is arranged displaceably along the flap, and that too the other end of the tension spring, the spring anchor, can be adjusted accordingly on the ground. These »5 type of solution has the advantage that the path of the springs is smaller than when each pull rod a spring would be assigned. ■ ''

The partial problem on which the invention is based can also be achieved by a different arrangement of the pressing means. For example at 'each end of the transverse web of the roller pair carrier two tension springs are effective, each of which is one has other separately adjustable tensile force. The tensile forces can be changed by means of turnbuckles or others, for example hydraulic ones Funds can be adjusted as needed.

Finally, another alternative solution is possible for the pressure means using compression springs, the two of which act on both ends of each transverse web of the roller pair carrier at a distance and can be pretensioned in different ways by means of spring adjustment bolts via housing cross members.

The invention is illustrated in the drawing in six figures:

F i g. Fig. 1 shows in elevation the main parts of the mill in partial section; Fig. 2 is a side elevation of Fig. 1; F i g. 3 is a plan view of FIG. 1, the right half of the in F i g. 1 shown pressure means is shown schematically, the left half there illustrated against a modification of the pressing means.

Claims (4)

In Fig. 4 to 6 an analogous embodiment of the invention is held in place with compression springs, the invention being shown in elevation in FIG. 4, in side elevation in FIG. 5 and in plan view in FIG. The outer grinding rollers 2 and the inner grinding rollers 3, which are held by a roller pair carrier 4 via a roller axle 5, roll on the driven grinding table 1. At the ends of each transverse web 6 of the roller pair carrier engages a pull rod? on, the ends of which are articulated / connected to one another via a transverse strap 8. The pressing force of the rollers is brought about by a tension spring 9 anchored on the floor, the point of application of which is arranged displaceably both on the transverse bracket 8 and on the rail-like floor anchor 10. For the purpose of better adjustability of the spring application point, it is designed as an articulated spring rod head 11, which is displaceable on the transverse bracket 8 and can be locked in the respective position by means of schematically indicated screws. ao The spring foot bearing 12 is also designed to be articulated on the spring side and can be fixed on the ground anchor 10 by means of screws. This arrangement is shown in plan in the right half of FIG. 3 can be seen schematically. Another alternative to the possibility of pressing the rollers differently is shown in the left half of FIG A guide pin 13 is attached to the grinding table 1 on each side of the roller pair carrier 4, which can rotate up and down in a vertical direction in a guide 15 attached to the mill housing 14. Another variant, which is an application of 4 to 6 show compression springs instead of tension springs. With otherwise identical mill elements, in contrast to the previous embodiment, compression springs 16 act on the crossbars 6 of the roller pair carrier 4, which are supported in a crossbar 17 attached to the mill housing, with the possibility , ■ · to be able to change the tension of the compression springs by means of a screw spindle or other means. 1. Zwillingsrollequetschmühle, in "which roll on a common grinding table grinding rollers in a twin arrangement, each of which can be loaded differently for evading upward by pressing means, characterized in that in a mill with a grinding table driven in a known manner (1) the Twin rollers (2, 3) are each mounted on a common axis (5) which is fastened in a stationary, but pivotable in the vertical direction, horizontal crosspiece (4) on which the pressing means (9, 16) act in such a way that the resulting force application point can be changed in the direction of the common twin roller axis (5) , 2. Twin roller squeegee mill according to claim 1, characterized in that each transverse web (4) of the roller pair carrier is provided at both ends with two tie rods (7) which are connected at their free end to a transverse strap (8) on which the point of application (11 ) a tension spring (9) is arranged displaceably along the bracket. 3. twin roller squeegee mill according to claim 1, characterized in that at each end of the transverse web (4) of the roller pair carrier two tension springs (9 ', 9 ") are effective, each of which has a different separately adjustable tensile force. 4. twin roller squeegee mill according to claim 1, characterized in that two compression springs (16) act on both ends of each transverse web (4) of the roller pair carrier at a distance, which can be biased to different degrees by means of spring adjusting bolts via housing cross members (17). References considered: USA ^ Patent No. 2,998,935. For this ! Sheet of drawings 709648/196 9. (7 θ BundcsdruckereIBerlin