Classifications

• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
  • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
  • D02G1/04—Devices for imparting false twist
  • D02G1/06—Spindles
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01H—SPINNING OR TWISTING
  • D01H7/00—Spinning or twisting arrangements
  • D01H7/92—Spinning or twisting arrangements for imparting transient twist, i.e. false twist
  • D01H7/923—Spinning or twisting arrangements for imparting transient twist, i.e. false twist by means of rotating devices
• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
  • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
  • D02G1/04—Devices for imparting false twist
  • D02G1/08—Rollers or other friction causing elements

Definitions

• the invention relates to a rolling bearing of a Fritationsfalschdrall raised according to the preamble of claim 1, a drive element for a rolling bearing according to the preamble of claim 8 and a clamping sleeve for a rolling bearing according to the preamble of claim 13.
• the texturing processes include, among others, the false twist or false twist method.
• DE 40 28 093 A1 describes a friction false twist which is used for false twisting, in particular synthetic threads, in false twist crimping machines.
• the friction false twister comprises three parallel shafts, which are rotatably mounted in a frame by means of ball bearings and whose axes are arranged in the vertices of an equilateral triangle. On a first shaft sits a whorl over which a drive belt is guided to drive this shaft. The transmission of the rotational movement of the thus acting as a driving shaft first wave to the other two waves is carried out by a toothed belt designed as drive belts, which are guided over the pulleys of the shafts.
• the friction false twister on groups of discs, which are positively or positively connected to the waves.
• the shaft spacings and pulley diameters are designed to that the respective cooperating discs overlap. Due to the overlap, a so-called overlapping triangle is formed with circular arc-shaped sides. Between the sides of this triangle, the thread is clamped in its course by the false twister between the disc groups to form a helical line and thus acted upon with the desired property.
• the shaft acting as a driving shaft and the two other driven shafts each have different lengths dependent on their drive function.
• the driving shaft has the greatest length of the three waves.
• Waves of texturing devices tend to oscillate at a certain speed.
• a solution to this problem is characterized in that the shaft, in a double-row roller bearing, at least in the region of a bearing row, elastically supports in the radial direction.
• DE 198 30 393 C1 shows a sleeve for receiving a double-row roller bearing, in particular for texturing devices, which has a different rigidity in the regions of the two rows of bearings in the radial direction. On its inside, the sleeve has an elastic inner shell.
• DE 198 30 393 C1 shows a shaft which acts as a driving shaft. For this purpose, a toothed belt pulley for driving the further waves of the texturing device as well as a whorl for driving the shaft are fastened by means of a Flachtreibriemens end of the shaft.
• the preparation of the different bearing shaft designs is time consuming.
• the bearing shafts require a resistant coating against vibration corrosion, which is usually designed as chrome plating.
• the surface treatment is usually carried out externally by specialized companies. This leads to the extension of the cycle time of a production lot not only by the surface treatment itself, but also by the transport routes or times. The desire for short delivery times for the specific execution of the respective order can thus, depending on the number of pieces, not or not always be met.
• the bearing to be completed from basic elements for all types, including the bearing shaft with a uniform length is suitable for both rigid and elastic installation and includes all the necessary components for bearing sealing, lubrication and attachment of texturing. Only with the addition of the respective clamping sleeve and the respective drive element, the rolling bearing is limited to a type variant. These remaining assembly steps to complete the rolling bearing are inexpensive and can be performed quickly and easily.
• a clamping sleeve formed as a rigid element is a very simple, inexpensive to produce component for use in the lower speed range of the bearing shaft.
• vibrations occur when the natural frequency of the bearing is in the speed range.
• An elastic clamping sleeve counteracts such vibrations.
• the elastic clamping sleeve can be used both in the lower and in the upper speed range, so universal.
• the drive element for the machine-side drive of the driving bearing shaft and the drive element for the driven bearing shafts is combined to form a one-piece drive element in a driving bearing shaft.
• manufacturing and assembly costs can be reduced.
• Such a design improves the secure fit of the drive element on the bearing shaft end.
• An embodiment according to claim 5 ensures a precise, slip-free drive of the driving bearing shaft.
• a Riemenauflaufkonus according to claim 6 facilitates the mounting of the drive belt.
• An embodiment of the drive element according to claim 7 is suitable for driving by means of a Tangentialflachriemens which drives a plurality of Texturier beautifullyen together.
• a drive element according to any one of claims 8 to 10 can be produced inexpensively in mass production.
• the drive element and thus the bearing shaft can be acted upon by a torque which serves to counter hold when tightening the disc tensioning element at the opposite end of the bearing shaft.
• the disc tensioning element may be a cylinder head screw with washer, as is known for example from DE 40 28 093 Al.
• the forming section is formed without additional operation in making the training according to one of claims 8 to 10 by a corresponding embodiment of the molding tool.
• a commercially available tool such as a screwdriver or an Allen key, can be inserted to counteract the tightening of the disk clamping element.
• An introduction, for example, a slot in the bearing shaft end in a separate operation is no longer necessary. This saves a manufacturing process.
• clamping element is designed according to claim 12 and provided in the region of the upper bearing support with axial, channel-like recesses, this allows a precise adjustment of the radial stiffness, especially if the rigidity must be low. Further details of the invention will be explained with reference to FIGS.
• FIG. 3 is a sectional view of the rolling bearing of FIG. 1 with a driven bearing shaft, which is completed with an elastic clamping sleeve and a drive element,
• Fig. 6 the clamping sleeve of Figures 3 to 5 in an enlarged perspective view.
• Fig. 1 shows the bearing shaft 1 as part of a rolling element consisting of basic elements 2.
• the rolling bearing in turn is part of a texturing device.
• the rolling bearing comprises base elements 2, which form a double row bearing with shaft ends protruding on both sides, wherein the bearing shaft 1 is arranged on the left in the illustration of FIG. 1 side for receiving texturing discs and spacers and on the other shaft side, a drive element of the bearing is arranged ,
• the rolling bearing of base elements 2 further comprises two rows of balls 3, 4, the balls 5, 6 respectively in a introduced into the bearing shaft 1 raceway 7, 8 rotate.
• the balls 5, 6 are held by means of two ball cages 9, 10 at a constant distance from each other and out.
• the bearing shaft 1 is rotatably mounted in the bearing sleeve 11.
• the formed between the bearing shaft 1 and bearing sleeve 11 interior of the rolling bearing of base elements 2 is sealed at the ends in each case by the seals 12, 13 from the environment.
• the bearing sleeve 11 has a relubrication opening 14, can be introduced through the grease for relubricating.
• the grease is distributed by means of a grease shoe 15 which is held by the bearing sleeve 11 in its position in the interior of the rolling bearing.
• the seal 13 is separated by a stop ring 16 from the region of the bearing shaft 1, which is designed for receiving the texturing discs and the spacer sleeves.
• the rolling bearing shown in Fig. 2 comprises in addition to the base elements 2, a rigid clamping sleeve 17 and a drive element 18 for driving the bearing shaft 1 by means of a not shown toothed belt.
• the rigid clamping sleeve 17 has a relubrication hole 19, which allows access to the relubrication opening 14 of the bearing sleeve 11.
• the drive element 18 is attached, which is designed as a toothed belt pulley, and at the end has a hexagon socket 21.
• On the other end carries the bearing shaft 1 aufmontêtêtting discs, of which a disc 41 is shown.
• the disk 41 is fixed on the bearing shaft 1 by means of spacer sleeves 42, washer 43 and screw 44, just like the disks (not shown).
• a hex key is inserted during assembly of the texturing discs and spacers.
• the drive element 18 and thus the bearing shaft 1 is acted upon by a torque.
• This torque counteracts the torque applied to the other shaft end 22 for tightening a screw for holding the texturizing discs and the spacers.
• the threaded hole 23 on the shaft end 22 serves to receive the screw. Texturing discs and spacers can be held between the screw and the washer on one side and the stop ring 16 on the other side.
• Such threaded holes as well as screws and washers for holding Texturierlismn and spacers on the bearing shaft are known for example from DE 198 30 393 Cl and DE 40 28 093 Al.
• the rolling bearing of Fig. 3 in contrast to the rolling bearing of FIG. 2 instead of the rigid clamping sleeve 17 a elastic clamping sleeve 24.
• the bearing shaft 1 is, as in the rolling bearing of FIG. 2, driven by means of the plugged onto the shaft end 20 drive element 18.
• the clamping sleeve 24 has a metallic sleeve 25 on the outside and an elastic inner sleeve 26 made of rubber on the inside.
• the clamping sleeve 24 comprises a relubrication hole 27 as access to the relubrication opening 14 of the bearing sleeve 11.
• a reinforcing ring 28 is vulcanized from metal or plastic.
• the bearing sleeve 11 is positioned in the region of the reinforcing ring 28 by means of a press fit.
• a sliding seat with gluing can be selected.
• the elastic inner shell 26 has axially extending recesses 29, as shown in Fig. 6.
• the radial stiffness and thus the radial damping behavior can be selected. Equipped with such an elastic clamping sleeve 24 bearings are required for use in the upper supercritical speed range.
• the bearing shaft 1 is shown in Fig. 3 as well as in Fig. 4 and Fig. 5 for reasons of simplification, as well as the shaft shown in DE 198 30 393 Cl without aufmontêt
• texturing device are shown in the shaft-mounted texturing discs, is described in DE 40 28 093 Al.
• Fig. 4 shows a roller bearing, in contrast to the rolling bearing of FIG. 3 instead of the drive element 18 the Drive element 30 has.
• the designed as a driving shaft bearing shaft 1 is driven by the machine side and arranged to in turn drive the two other bearing shafts of the texturing device.
• the machine-side drive is a single motor by means of a toothed belt.
• the toothed belt cooperates with a part of the drive element 30, which is designed as a toothed belt pulley 31.
• the drive element 30 has a belt casserole cone 32.
• the drive member 30 includes in addition to the pulley 31 a further formed as a toothed belt pulley 33 part for driving the other two bearing shafts of
• the drive element 30 has a hexagon socket 34.
• the drive element 30 is integrally molded from plastic.
• the drive element 30 may be embodied as an injection-molded part, as a sintered part or as a extruded part.
• a drive element 35 with a whorl 36 which is designed for the machine-side drive by means of a flat belt.
• the drive element 35 is placed on the shaft end 20 of the bearing shaft 1 acting as a driving shaft.
• Such drives by means of flat friction belts are used for the joint drive of several texturing devices, So the drive of several driving bearing shafts used.
• the drive member 35 includes as well as the drive member 30 designed as a toothed belt pulley 37 part for driving the other two only driven bearing shafts of the texturing device and a hexagon socket 38.
• the hexagon socket 38 serves, as already explained above, the counter-holding during the assembly of the texturing discs and spacers ,
• Fig. 6 shows the clamping sleeve 34 in relation to the figures 3 to 5 enlarged perspective view to make the shape of the recesses 29 in the elastic inner shell 26 of the clamping sleeve 24 clearly visible.
• the recesses 29 are arranged only at one head end and have a predetermined length.
• the recesses 29 are formed so long that they extend in the assembled state of the clamping sleeve 24 into the region of the balls 6 of the row of balls 4. Between the recesses 29 of the inner shell 26 remain support surfaces 39 are.
• the cylindrical inner shell 26 which consists of rubber, enclosed by the metallic sleeve 25 and lies with the support surfaces 39 and a part of the inner surface 40 on the bearing sleeve 11, the outer element of the base elements 2, on.
• a reinforcing ring 28 is vulcanized, which also rests on the bearing sleeve 11.
• the rows of balls 3 and 4 are mounted with different stiffness in the sleeve 25.
• the formation of the recess 29 can be made such that a precise vote of the radial stiffness of this bearing side especially possible when low stiffness is required.
• the drive element 30 or the drive element 35 may be composed of two individual parts to a preassembled component which is pushed onto the bearing shaft. This can reduce the cost of producing a mold.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Rolling Contact Bearings (AREA)
• Mounting Of Bearings Or Others (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Rolls And Other Rotary Bodies (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34967175

Family Applications (1)

Country Status (5)

Families Citing this family (5)

Family Cites Families (16)

• 2004
  • 2004-07-07 DE DE200410032741 patent/DE102004032741A1/de not_active Withdrawn
• 2005
  • 2005-05-12 JP JP2007519629A patent/JP2008505255A/ja not_active Withdrawn
  • 2005-05-12 WO PCT/EP2005/005106 patent/WO2006005389A1/de active Application Filing
  • 2005-05-12 EP EP05739874A patent/EP1766113A1/de not_active Withdrawn
  • 2005-05-12 CN CNA2005800210634A patent/CN1973071A/zh active Pending

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events