DE1062637B - Device for tension control of chain threads - Google Patents

Description

GERMAN

The invention relates to a device for regulating the tension of warp threads, which are driven by a Ketfeenbaum are guided over a backrest, which with its pin on around the axis of rotation of the Kefctenbaumes swiveling, and under adjustable load stationary swing arm runs. Swivel the bearing swing depending on the weight load this the backrest more or less from the axis of rotation of the warp tree while at the same time corresponding change in the pressure on the chain threads running from the chain tree to the loom.

The previously known devices for regulating the load on the bearings swing on which the Streichbaum runs, with a few exceptions, only leave a relatively rough regulation the thread tension. But it has already become known, with the help of additional facilities to achieve fine control of the thread tension. However, the facilities for this are known extraordinarily intricate and relatively difficult to handle, namely it must be movable Limits on scales are adjusted on the basis of previous intellectual considerations, what only specially trained, high-quality and therefore expensive specialists can carry out. Also need the actuators be executed in precision work, what the manufacturing costs of the fine control device accordingly elevated.

In contrast, the invention has set itself the task of using the devices mentioned at the beginning Kind of the per se known devices for separate coarse and fine control of the thread tension so too that they simplify only a few, cheap The parts to be manufactured exist and can be safely operated by any auxiliary worker. Of the Accordingly, protection of the invention is only intended to apply to the particular training described below of these facilities and does not affect the presence of the facilities as such Devices' of the aforementioned type.

According to the invention, there is a device of The type of coarse control device mentioned at the outset consists of a pivotable about a fixed axis Angle lever with an adjustable weight on one arm and an adjustable weight on the other arm acting pressure roller carries, and the fine control device from one on the bearing rocker adjustably arranged, the counter bearing of the pressure roller forming sliding block.

In the drawing, the subject of the invention is based on an exemplary embodiment, in part in schematic representation illustrated. It shows

Fig. 1 shows a device for regulating the tension of warp threads in a side view as well

Voltage regulation device
of warp threads

Applicant:

Theodor Hutmachers,
Dülken (RhId.), Ostgraben 31

Theodor Hutmachers, Dülken (RhId.),
has been named as the inventor

Fig. 2 and 3 parts of the device with different settings of the fine control device.

On the frame of a device for voltage regulation a chain tree 1 of known design is rotatably mounted by chain threads, on whose: shaft a For example, a drive wheel 2 designed as a worm wheel is seated. With the worm wheel 2 is a driven worm 3 in engagement, which can be pivoted about the axis of rotation of the chain tree 1 Bearing rocker 4 is arranged. The chain threads running off the chain tree 1 pass through a Backrest 5 to a (not shown) loom of any design. The rocker arm 4 as well a second bearing rocker arranged at the opposite end of the shaft of the chain tree 1 is similar Execution serve to support the backrest 5, whose axis of rotation is in the pivot plane of the bearing rocker 4 expediently between the axis of rotation of the chain tree 1 and the run-off points of the chain threads from this tree lies. As a result, the warp threads are always under a predetermined minimum tension held.

On each bearing rocker 4 there is a sliding block H ₁ which is adjustable in its angular position to the longitudinal axis of the rocker in the pivot plane of this bearing rocker. Fig. 1 shows the Kulissseastein 11 in its central normal position parallel to the longitudinal axis, Fig. 2 and 3 in an angular position to this axis. With each sliding block 11 is a pressure roller 10 in non-positive connection, at the one end 9 of a pivotable about a fixed axis 6 the angle lever 9 is rotatably T ₁ is arranged. At the other end 7 of this angle lever 7, 9 serving as a tensioning lever, an adjustable weight 8 engages, which can be attached at different distances from the axis of rotation 6 or also be designed as a sliding weight and the like.

.-.- <■■, 909 579/174

Claims (1)

The pressure forces transmitted depending on the setting ^{1 of the} weights 8 to the clamping levers 7, 9 and from these via the rollers and the sliding blocks 11 to the bearings, 4, seek to swivel the backrest 5 to the right and thereby the from the chain threads running off the chain tree 1 in a practically constant tension. However, it would be difficult to want to fine-tune the thread tension solely with the help of the weights 8. According to the invention, these rather cause the sliding blocks 11, which are initially in their the aforementioned normal central position remain (Fig. 1}. If, for example, you want to produce a very loose fabric with otherwise unchanged conditions, so the sliding blocks 11 are brought into the angular position shown in Fig. 2. In this situation, the the bearing rockers 4 acting pressure rollers 10 more easily on the contact surfaces of the sliding blocks 11 roll off, so the frictional pressure is reduced. In addition, the force attack of each role wanders a bit in the direction of the axis of rotation of the associated bearing rocker 4, so that a correspondingly smaller Torque results. As a result, the tension of the warp threads compared to the Thread tension with normal position of the Kjulissen stones. The opposite is the case with the angular position of the sliding blocks 11 shown in Fig. 3. Here the pressure rollers 10 must, as it were, with a correspondingly high frictional pressure on the contact surfaces these stones run up, and the application of force is further away from the axes of rotation of the bearing rocker 4. . As a result, these bearing rockers receive a greater torque and, accordingly, the chain threads a higher tension, which is usually desirable when manufacturing particularly dense fabrics. • Claim: Device for regulating the tension of warp threads from a driven chain beam are guided over a backrest, which with its pin on around the axis of rotation of the chain tree pivotable and under controllable load bearing swing runs, characterized in that that for each bearing rocker (4) in a manner known per se one for coarse control and for fine control of the thread tension serving device is provided, wherein the coarse control device from a - about a fixed axis (6) pivotable - angle lever (7, 9), the on one arm (7) an adjustable weight (8) and on the other arm (9) one on the Bearing rocker (4) acting pressure roller (10) carries, and the fine control device aus.einem on the bearing cradle (4) adjustable, forming the counter bearing of the pressure roller (10) There is a sliding block (11). · Considered publications:
German patent specifications No. 122 551, 437 044,
846,869 324; Swiss Patent No. 49 572;
U.S. Patent No. 2,507,828. 1 sheet of drawings © 909 579/174 7.59