DE1060755B - Device for tensioning the drive belts or cords of the spindles of spinning and thread? - Google Patents

Description

GERMAN

(See Paf.BL

The invention relates to a device for tensioning the drive belts and cords of the spindles of spinning and twisting machines.

The spindles of the spinning and twisting machines are nowadays preferably made by belts, in special Felling also driven by cords individually or in groups. Weight or spring loaded Tensioning pulleys ensure that the straps and cords are subjected to the same load and thus ensure an even load Drive of all spindles.

The belt or cord tension required to drive the spindles depends on the size of the for the drive of the spindle required torque, which at high spindle speed of the greater air friction because is considerably higher than the torque required at low speeds.

It is practically not possible with the known clamping devices in the spinning or twisting mill adjust the tension of the belts to the torque required in each case, as for the drive of the Spindles on a single machine require numerous clamping devices 'which' can only be used by trained personnel Personnel can be adjusted in time-consuming work. The tensioning devices of the drive belts and cords are therefore required for the The greatest torque is set, whereby it is accepted that the belts are stronger in many cases are tensioned as necessary and therefore unnecessarily high bearing pressures and friction are generated.

Hydraulic and pneumatic loading devices have so far only become known for drafting systems. These known devices only serve to top roller saddles or support arms burden, you are not able to solve the problem and the solution to solve this problem associated advantages or to achieve. Furthermore, it has become known in a drive for ring spinning or ring twisting machines, to carry out the up and down movement of the ring or spindle bench hydraulically or pneumatically. This last-mentioned known device can not be used to solve the inventive Task can be used.

The invention is based on the problem of the tensioning of the spindle tapes or cords in a simple manner Wise and very quickly to adapt to the respective needs. It consists in the fact that for tensioning of the cords or straps, a hydraulic or pneumatic means set under controllable pressure is provided is. This means makes it possible to tension the ligaments with the help of simple devices and to adapt cords to the respective needs at any time and quickly and for all or part of the The machine spindles the tension of the drive device

for tensioning the drive belts

or cords of the spindles
of spinning and

· Applicant:

Spindelfabrik GmbH,
Sweetie (Württ.)

Wilhelm Stahlecker, Tieringen via Baiingen (Württ.), And Hans Stahlecker, Süßen (Württ.),

have been named as inventors

to control tapes or cords from one place.

In a special embodiment of the invention it can be provided that the pressure of the hydraulic or pneumatically controlled from one point for all spindle drive belts of a machine However, certain groups of drive belts are tensioned with a higher pressure can than others.

Furthermore, in a manner known per se, in a preferably tubular container a hose placed under hydraulic or pneumatic pressure as well as against it Be arranged pressure plates.

Another advantageous embodiment of the invention is that the holder for the tensioning roller is pivotably mounted about the container receiving the hose and a known per se double-armed loading lever is pivotally mounted on the container in such a way that it has its short Arm against the pressure plate, while its long arm rests on the holder.

To accommodate the pressure hose and the associated pressure plates, one can be taken from the spindle bank Recessed channels are used and for links that connect the pressure plates with the tensioning pulley holders, there may be guide openings in the spindle bench.

909 559/277 a

Instead of a pressure hose with pressure plates, pressure cylinders can be used in a manner known per se hydraulically or pneumatically operated pistons may be provided.

Tubular or trough-shaped housing covers for the hose can be made using the spindle bearing housing be attached to the spindle bench.

The novel tensioning device is explained in more detail using a few exemplary embodiments. It shows

Fig. 1, seen from the side, partially in section, a normal four-spindle belt drive with a through pneumatic pressure operated tensioner pulley,

Fig. 2, seen from above, partially in. Cut that Four-spindle belt drive of Fig. 1,

Fig. 3, seen from the side, partially in section, a single-spindle belt drive with a pneumatic Pressure actuated tensioner pulley,

Fig. 4, seen from above, partially in section, the single-spindle belt drive of Fig. 3,

5, seen from the side, as a partial view, partly in section, a modification of a single-spindle belt drive. according to FIG. 3 with a tensioning roller actuated by hydraulic pressure.

The four-spindle belt drive shown in FIGS. 1 and 2 has, instead of the usual holder rod for the tension roller holder or rocker, a tube 2 in which the hose 3 with pressure plates 4, which is set under pneumatic pressure, is arranged. The holder 1 of the tensioning roller 5 is rotatably mounted on the tube 2. The tensioning lever 9, which is supported against the pressure plate 4 and is pivotably mounted in the slot 6 of the tube 2, wants, following the pneumatic pressure, to move the tensioning roller 5 in the direction of the arrow, the belt 7 being tensioned. In this way, all spindle belts 7 of the machine can be tensioned equally and the same drive conditions can be created for all spindles 8. The spindles will therefore run at the same speed. By increasing or decreasing the air pressure in the hose 3, the tension of the belts 7 can be adjusted in a simple and very quick manner so that the spindles are driven without slippage, but can still be braked by the spinner without difficulty. The tensioning device, which has no tension weight and is therefore practically massless under pneumatic pressure, works very smoothly. The belt is therefore spared and runs very smoothly.

The hose 3 can be connected to an ordinary bicycle pump, which is carried out in the usual way, and in fact expediently at the end of the hose, can be inflated to the desired pressure. With a Pressure gauge, the tension in the hose can be easily checked. Hoses for compressed air can are now relatively cheap and, above all, very durable.

The tension roller 5 can be fixed in the holder 1 in a pivotable mounting in the usual way so that that the tape runs exactly.

In the single-spindle belt drive shown in FIGS. 3 and 4, the spindles 8 on both sides of the machine are used independently of one another by means of drive shafts 9 with drive disks 10 arranged in front of the spindles driven by short endless belts 11. A tensioning roller 12 is provided for each spindle, which is connected to a roller holder 14 pivotably mounted about pivot point 13 is attached. At the back of the Spindle bench 15 is a pneumatic or hydraulic pressure medium in a channel-shaped container 16 containing hose 17 with plunger pressure plate 18 is arranged. The pivot point 13 can be pivoted mounted, angled roller holder 14 supported against the plunger pressure plate 18 presses the Tension roller 12 in the direction of the arrow down and keeps the belt 11 taut.

The one described, working with pneumatic or hydraulic pressure, in FIGS. 3 and 4 The belt tensioning device shown has particular advantages in addition to those already mentioned. In which In Fig. 3 and 4 shown single-spindle belt drive, the tape is guided so that it is in both directions of rotation

ίο can walk. The direction of rotation of the spindles can therefore very simply by changing the direction of rotation of the drive shaft 9 from right to left rotation or vice versa be changed. The tension pulley is then tensioned once in the, the other time in the

i5 .: lying loose strand of the ribbon. The power transmission is known to be best when the tensioning pulley is in the loose strand of the belt. In the case of the FIG. 3 and 4 shown single-spindle belt drive, however, the same power transmission is achieved when the clamping

ao roll in the tense strand of the tape reached when the pressure in the hose and thus also the tensioning pulley is increased by around 30%. It can on In this way, the same drive conditions can be created when the spindles rotate clockwise and anti-clockwise.

For known reasons, it is recommended that the drive belts tensioned by weights or spring force or to relieve cords during longer machine downtimes. Ribbons and cords must be in the Usually be taken off the tensioning pulleys. However, this removal and application of the tapes does not take place often because it is cumbersome and time consuming. The tensioned with hydraulic or pneumatic means Tape, on the other hand, can quickly be completely or partially relaxed by reducing the pressure in the hose will. The operating pressure of the pneumatic means can also be restored in a very short time, if an electric air pump is used to inflate the hose.

The channel 16 made of sheet metal and shown in FIGS. 3 and 4 can, as FIG. 3 shows, be very simple attached to the spindle bench by the spindles. For this purpose, 16 are suitable on the channel Place holder 161 attached by the flange of the spindle bearing housing of the spindle 8 the spindle bank 15 are held.

Instead of, as in Fig. 1 to 4, the pressure on the tensioning rollers from hoses via pressure plates, levers and linkage to be transferred, it can be useful in certain cases, hydraulically or Use pneumatically controlled pressure pistons, which are also connected to a centrally controllable pressure system be connected. This system is shown schematically in FIG. 5 in an arrangement similar to FIG. The piston 19 of the printing unit 20 fastened in the spindle bank presses via an angle lever 14 ' on the tension pulley, not shown. The printing unit is common to many printing units Pressure pipe 21 connected, the pressure of which is centrally controlled with known devices.

Claims (7)

Patent claims: ! .Device for tensioning the drive belts or cords of the spindles of spinning and twisting machines, characterized in that for Tensioning the cords and straps (7) a hydraulic or adjustable pressure pneumatic means is provided. 2. Apparatus according to claim 1, characterized in that the pressure of the hydraulic or pneumatic means from one place can be regulated for all spindle drive belts of a machine, but certain Groups of drive belts can be tensioned with a higher pressure than others. 3. Device according to claims 1 and 2, characterized in that in per se known Way in a preferably tubular container (2) a hydraulic or pneumatic pressurized hose (3) and pressure plates resting against it are. 4. Apparatus according to claim 3, characterized in that the holder (1) for the tensioning roller (5) is pivotably mounted around the container (2) receiving the hose and a per se known double-armed loading lever (9) is pivotably mounted on the container (2) in such a way that he with his short arm against the pressure plate (4), with his long arm against the holder (1) rests. 5. Device according to claims 1 to 3, characterized in that a device for Receiving the pressure hose (17) and the associated pressure plates (18) preferably as one from the spindle bank (15) recessed channel is formed .and that guide openings in the Spindle bench is available for links that hold the pressure plates (18) with the tension roller holders (14) connect (Fig. 3). 6. Device according to claims 1 and 2, characterized in that instead of a pressure hose (3) with pressure plates (4) in a manner known per se pressure cylinder (20) with hydraulic or pneumatically operated pistons (19) are provided (Fig. 5). 7. Apparatus according to claim 5, characterized in that tubular or trough-shaped housing cover (16) for the hose (17) using the spindle bearing housing (8) on the spindle bench (15) are attached (Fig. 3). Considered publications:
German patent specifications No. 671 348, 906 672,
369; Swiss Patent No. 227 738;
French patent specification No. 955 485. 1 sheet of drawings © 909 559/277 a 6.