Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H54/00—Winding, coiling, or depositing filamentary material
  • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
  • B65H54/40—Arrangements for rotating packages
  • B65H54/54—Arrangements for supporting cores or formers at winding stations; Securing cores or formers to driving members
  • B65H54/543—Securing cores or holders to supporting or driving members, e.g. collapsible mandrels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
  • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
  • B65H75/18—Constructional details
  • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
  • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
  • B65H75/248—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by actuator movable in axial direction
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/30—Handled filamentary material
  • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

• the invention relates to a winding spindle according to the preamble of claim 1.
• Winding spindles are used in winding machines, which serve to wind continuously tapering threads into spools.
• the threads in the winding machine are initially changed by a traversing device transversely to the thread running direction and guided over a rotating pressure roller.
• the pressure roller sets the threads on each of the wound coils to be wound.
• several coils are arranged in alignment one behind the other on a common winding spindle. This makes it possible to wind several threads at the same time.
• the full bobbins and the empty tubes, on which the bobbins are wound up, are taken axially from the winding spindles during an exchange or attached to the winding spindle.
• the winding spindles are cantilevered cantilevered.
• a winding spindle with integrated clamping means is known for example from the patent application DE 101 63 832 Al.
• the winding spindle is essentially formed by a tubular support which is connected to a driven and rotatably mounted shaft. Outside the tubular support, the clamping means are provided, which are enclosed by a further tubular holder.
• the outer diameter of the winding spindle is thus determined by the diameter of the holder.
• the diameter of the tubular support which is decisive for the static and dynamic properties of the winding spindle, is smaller by twice the thickness of the clamping means. This loss of space for the wearer is particularly painful since the bending stiffness of a pipe in the fourth power depends on the diameter.
• the spindles are now designed for 8 or more spools, so that the spool spindles have corresponding overall lengths that are dynamically soft and thus easy to excite vibrations.
• high winding speeds are required by the winding spindles, which lead to correspondingly high speeds of the winding spindle, which has a vibration excitation in a wide frequency band in the course of the winding cycle result.
• Another conflict of objectives arises from the requirement to store as much volume in a coil, which prohibits large inner diameter of the coils and thus large outer diameter of the winding spindles.
• a winding spindle wherein the clamping means are associated with a short length portion of the holder, wherein the clamping means for fixing the sleeves act on at least one of the sleeves, and in which the sleeves frictionally and / or positively as a stack of tubes on the circumference of Halters are held.
• the advantage is that a tensioning device can be used which does not extend over the entire length of the winding spindle, as is the case with tensioning devices which individually radially tension each sleeve.
• the clamping means are assigned to a cantilevered side of the holder and in which an axial stop for the sleeves is provided on an opposite bearing side of the winding spindle.
• the arrangement at the projecting end is based on the knowledge that the structure in the region of the projecting bearing is particularly relevant for the static and dynamic rigidity of the winding spindle. Due to the relocation of the clamping device tion to the projecting end of the winding spindle is now more space for a rigid design of the winding spindle available. Thus, particularly long-projecting winding spindle can be created with low bending tendency for simultaneously winding a plurality of coils.
• the clamping device is located at the projecting end of the winding spindle with one or more clamping means which exerts an axial clamping force in the direction of the bearing on the sleeve assigned to the projecting end of the winding spindle.
• the clamping force acts in the axial direction and can be transferred directly to the sleeve stack for fixing all sleeves.
• an axial clamping force is transmitted directly to the end face of the sleeve which is assigned to the projecting end of the winding spindle.
• the clamping device is designed such that the clamping means generate at least one last sleeve, a radial clamping force.
• the positive connection of the sleeves is used within the sleeve stack, in order to obtain a fixation and entrainment on the circumference of the holder.
• the sleeves are previously pushed together to the axial stop on the circumference of the holder, and then fixed by a partial clamping.
• the clamping means have an advantageous effect on at least one of the sleeve.
• partial clamping can also be achieved if several sleeves at the end of the sleeve stack are clamped by the clamping means.
• the clamping means are formed so that during the clamping operation in a first step, the sleeves are clamped axially and then in a second step, the radial clamping force is applied.
• These steps can be executed successively, merge into one another or be executed in reverse order. Decisive is that the friction due to the radial clamping is always high enough to apply the axial biasing force.
• the clamping means required for generating the axial clamping force are preferably arranged on the bearing side of the winding spindle.
• the radially clamped sleeves serve as a stop for the axially clamped sleeves on the circumference of the winding spindle.
• the contact surface on which the sleeve stack bears against the axial stop is provided with a friction-increasing structure.
• a friction-increasing structure This can be done, for example, by a rough surface or by a profiling, wherein the elevations of the profiling press into the softer structure of the sleeve end face.
• the profiling of the contact surface is equipped with a plurality of drivers, which cooperate with a plurality of recesses in the end face of the sleeve. This allows high torques to be transmitted to the sleeves and the tube stack in particular even without axial clamping forces or with only slight axial clamping forces.
• the end faces of adjacent sleeves have a plurality of indentations and a plurality of projections resulting therefrom, which cooperate within the sleeve stack such that the torque is transmitted in a form-fitting manner to each of the sleeves.
• the end faces of the sleeves are provided with a friction enhancing structure which also contributes to the transmission of the torque.
• a further development of the invention uses an intermediate ring between two adjacent sleeves which ensures torque transmission and also ensures centering of the sleeves.
• the intermediate ring on means such as a centering diameter and abutment surfaces with a congruent shape for receiving the end faces of the sleeves.
• the centering of the sleeves on the winding spindle is achieved in that the winding spindle is provided on its outer circumference with radially resilient fixing means.
• these resilient fixing means are formed by axially provided on the outer circumference of the winding spindle strips. It is within the ability of a person skilled in the art to design these strips so that a centric fixation of the sleeves on the winding spindle is ensured.
• the clamping device of the winding spindle is designed so that the sleeves are tensioned in the energy-free state. When supplying energy from the outside, the sleeves are relaxed.
• the supply of energy to the cantilevered side of the winding spindle This has the advantage that no supply lines are guided through the areas of the winding spindle that are relevant for the rigidity.
• the development of the invention has proven particularly advantageous, in which the longitudinal section of the holder accommodates the tensioning device extends to a bearing point of a drive shaft connected to the holder. This makes it possible to perform the drive shaft with the largest possible diameter.
• FIG. 3 shows a partial section through an alternative embodiment of the winding spindle according to the invention
• FIG. 4 shows a detailed view of a clamping means
• FIG. 6 shows a partial section through an embodiment of a clamping device
• FIG. 7 shows a view of a variant of the winding spindle according to the invention.
• 8 shows a cross-sectional view of a further variant of the winding spindle according to the invention.
• FIG. 1 shows a section through the winding spindle according to the invention. 1 shows in the upper area the winding spindle with Benen coils 4 shown in section in the tensioned state. The lower half is shown without coils in the relaxed state.
• the winding spindle 1 has a holder 29 which is rotatably supported cantilevered on a support 47 with a bearing, not shown here and on the periphery a plurality of coaxially successively arranged sleeves 2 carries on which by the rotation of the holder 29 continuously tapered yarn to yarn layers and thus wound up into coils 4.
• Such winding spindle 1 are well known and commonly used in winding machines. Therefore, the decisive for the invention parts of the winding spindle will be described below.
• the sleeves 2 are held as a sleeve stack 41 on the circumference of the holder 29, wherein the sleeves 2 are directly adjacent to each other with their end faces.
• the sleeve stack 41 is formed from a total of three sleeves 2.
• the number of sleeves is exemplary, so usually more than ten sleeves 2 are held on a holder 29 of the winding spindle 1.
• the fixation of the sleeves 2 to the holder 29 is effected by a tensioning device 7, which is arranged on a longitudinal portion of the holder 29 at the projecting end of the winding spindle 1.
• the clamping device 7 has a plurality of clamping means 8, which protrude with their ends from the holder 29 and act on a last sleeve 2 of the sleeve stack 41.
• the clamping device 7 is formed so that the sleeves 2 are tensioned by an axial clamping between the clamping means 8 on the projecting side 6 and an arranged on the bearing side 5 axial stop 11.
• the axial stop 11 is formed on the storage side 5 on the circumference of the holder 29.
• the clamping means 8 are designed so that it engages the sleeve 2 assigned to the projecting side 6 in a form-fitting manner on its end face.
• the clamping means 8 on a shoulder which cooperates with the end face of the sleeve 2.
• the clamping means 8 are moved back against the clamping direction and to a diameter which allows sliding of the sleeves 2 on the holder 29.
• the clamping means 8 now perform a clamping movement 9, in which the clamping means 8 are first extended to a diameter which enables a positive axial gripping of the end face of the sleeves 2 to be clamped.
• the clamping means 8 are moved in the axial direction in the direction of the storage side 5. As a result, the actual clamping operation is performed.
• the diameter of the holder 29 is reduced in the area of the clamping means 8.
• the holder 29 has no diameter step in the area of the clamping means 8, as long as the clamping means 8 are completely retracted during the decompressing movement 10 ,
• the expansion movement 10 includes a radial movement of the clamping means 8 inward and successively or simultaneously a movement of the clamping means 8 in the direction of the projecting side 6. This relaxes the sleeves 2 and at the same time the clamping means 8 are moved back so far that the sleeves 2 on the Clamping means 8 can be withdrawn away.
• the axial stop 11 has at the contact surface 12 to the adjacent sleeve 2 has a surface with improved friction effect.
• Corresponding surfaces or structures can also be provided on the clamping means 8 or between respectively adjacent sleeves 2. It is also possible between the sleeves 2 to provide intermediate rings, not shown here, which have corresponding surfaces or structures at the contact surfaces to the sleeve end faces.
• FIG. 2 shows a further variant of the winding spindle 1 from FIG. 1 with inserted coils 4 in plan view.
• the contact surface 12 of the axial stop 11 has in the axial direction a profiling 38 with a plurality of drivers 39, which cooperates with corresponding recesses 40 in the end face of the adjacent sleeve 2.
• the sleeve end faces 13 of adjacent sleeves 2 also have a similar toothing with a plurality of cuts 42 and a plurality of projections 43.
• the incisions 42 of the sleeves 2 cooperate with the projections 43 of the adjacent sleeve 2, so that the sleeves 2 are held in a form-fitting manner in the sleeve stack 41.
• the clamping means 8 act directly on the cuts 42 in the contact surface 14 of the sleeve end face.
• FIG. 3 shows a further variant of the winding spindle 1 according to the invention.
• the upper half is shown with cut sleeves 2 in the tensioned state, the lower half in the relaxed state without sleeves.
• the axial clamping force is applied here not by form but by adhesion.
• the sleeve 2 on the projecting side 6 of the winding spindle 1 radially from the inside.
• the sleeve 2 is clamped on the projecting side 6 axially in the direction of the axial stop 11.
• FIG. 3 shows fixing means 15, which radially center the sleeves 2 on the holder 29 winding spindle 1. This is done by resiliently yielding strips in the radial direction. A progressive characteristic of the spring ensures the radial centering.
• a power supply 16 which is required for actuating a tensioning device 7 shown in the following FIG. 6 for driving the tensioning means 8 when relaxing.
• This can be for example a compressed air source.
• the clamping movement of the clamping means 8 is effected by a spring, the relaxation movement, however, by the external power supply.
• the external power supply 16 is connected at standstill of the winding spindle 1 with the projecting side 6 of the winding spindle 1 and leads to the energy required for relaxation.
• the external power supply 16 may be connected to a doffing device, which decreases the full coils 4 after completion of the Aufspulvorganges and expires empty sleeves 2.
• FIG. 4 shows again in detail the clamping means 8, which are shown in the preceding figures.
• a tensioning means 8 is shown in FIG. 4, which transmits an axial friction force by means of a radial clamping force.
• the clamping means 8 has a friction-increasing contact surface 14.
• the clamping means 8 shown in Figure 5 is due to a stepped design able to transmit the clamping force in the axial direction by positive engagement. The step is not necessary for clamping function, it is also conceivable that the clamping means 8 cooperates via a straight edge with the end face of the sleeve 2.
• the contact surface 14 acts here in any case in the axial direction with the end face of the sleeve together.
• FIG. 6 shows a partial section through the projecting end of the winding spindle and the tensioning device 7 of a winding spindle according to the invention.
• the tensioning device 7 is arranged here directly on the longitudinal section of the holder at the end. It is one of many possible embodiments that are capable of realizing the tensioning movement 9 and the relaxing movement 10 of the tensioning means 8.
• the tubular holder 29 is freely rotatably supported on the carrier 47.
• the holder 29 has openings 48 through which the clamping means 8 act outwardly in the direction of the sleeve, not shown here. Compressed air can be supplied via a flange 21 for relaxing, which flows via the bore 20 into a cylinder space 22 and acts on an annular piston 23.
• the piston 23 moves upon application of compressed air to the right, thereby biasing the spring 28.
• the annular piston 23 has on its outer circumference via several ramps 24, which cause a radial movement of the clamping means 8 in axial movement.
• the clamping means are pulled inwards. After completion of this radial movement contacted a stop 26, the clamping means 8 and pushes it also to the right, wherein the clamping means 8 a drag sleeve 27 which carries the tensioning means 8 in the axial direction, entrains.
• This movement is carried out until equilibrium prevails between the spring 28 and the compressed air or the tensioning means 8 or the push sleeve 27 runs against a stop. This completes the relaxation movement.
• connection to the power supply 16 is now disconnected, whereby the air pressure in the cylinder chamber 22 collapses.
• the prestressed spring 28 now pushes the piston 23 to the left, whereby due to the ramp 24, first the clamping means 8 are pressed radially outward. These clamp against the inner wall of the sleeves 2. Due to the action of the spring 28, an axial clamping force is exerted on the sleeve 2 in the direction of the axial stop 11 shown in FIG.
• the coordination of the radial and axial movement of the clamping means 8 is ensured by a vote of the friction conditions of the sliding sleeve 27 with the friction conditions of the piston 23.
• the details have been omitted. This concerns, for example, a fuse which prevents the clamping means 8 from falling out and a spring which pulls the clamping means 8 in the relaxed state into the winding spindle.
• the required movement of the tensioning means 8, represented by the tensioning movement 9 and the relaxing movement 10 can be achieved in the same way as other device features that can be derived by a person skilled in the art.
• Figure 7 illustrates a further variant of the winding spindle according to the invention.
• the clamping device 7 is arranged on a longitudinal portion of the holder 29 on the storage side 5.
• a clamping means 30 is provided on a shoulder of the winding spindle 1.
• the clamping means 30 is implemented here in the form of an annular piston or in the form of a plurality of small pistons, which are introduced in a cylinder 31 and via a compressed air supply
• the clamping means 30 exerts an axial clamping force on the end face of the bearing side 5 of the winding spindle 1 associated sleeve 2, which are clamped together with the other sleeves 2 between the clamping means 30 and the pawls 33.
• the pawls 33 are radially retractable and extendable, so that they can be sunk to remove the sleeves 2.
• an actuator may be provided, which is connected to the pawls 33 and is operated either together with the clamping means 30 or separately.
• the pawls 33 are displaceable in a clamping movement 35 axially against a spring in the direction of the projecting side 6 to a stop, not shown here.
• the pawls 33 pulled by a backdrop during their return movement 36 radially into the winding spindle inside. It is useful that the pawls 33 are interrupted during their return movement 36 in their movement, so that they remain in a radially retracted position.
• a release 37 which is actuated for example by an operator after pushing the sleeves 2 onto the winding spindle 1, the return movement 36 can be continued, so that the pawls 33 extend radially again.
• FIG. 8 shows a further variant of the winding spindle according to the invention in a cross-sectional view.
• the tensioning device 7 extends over a length section of the holder 29 on the projecting side 6 of the winding spindle over a region exceeding the length of a sleeve.
• the tensioning means 8 act on two sleeves 2 arranged at the end of the sleeve stack 41.
• the tensioning means 8 were each directed to a last sleeve 2 of the sleeve stack 41.
• the tubular holder 29 is connected in the central region by a hub 50 with a free end of a drive shaft 46.
• the drive shaft 46 is coupled to a drive, not shown here.
• the drive shaft 46 is rotatably mounted in a bearing 45 on a hollow cylindrical support 47.
• the support 47 projects for this purpose on the bearing side 5 with a support end in the hollow cylindrical holder 29th
• a clamping device 7 is arranged in a front longitudinal section of the holder 29.
• the clamping device 7 has a plurality of clamping means 8, which are designed to be displaceable in the radial direction.
• each clamping means 8 is associated with an opening 48 in the holder 29.
• a power connection 49 is provided, through which an energy supply to the tensioning device 7 takes place for releasing the tensioning means 8.
• the winding spindle 1 is shown with a strained sleeve stack 41.
• the sleeves 2 are held in the sleeve stack 41 by a plurality of intermediate rings 44 toothed against each other, so that a torque transmission from the clamped sleeves 2 takes place within the sleeve stack to the unclamped sleeves.
• the opposite to the axial stop 11 sleeve 2 has on its front side also a congruent with the profiling 38 shape with cuts and projections.
• the centering rings have opposite the end faces of the sleeves 2 each contact surfaces with profilings that allow a rotation transmission.
• the centering rings 44 are based on a centering shoulder relative to the circumference of the holder 29, which serves in particular for centering the sleeves 2.
• the sleeves 2 and the intermediate rings 44 are alternately pushed from the projecting side 6 forth on the circumference of the holder 29.
• the resulting sleeve stack 41 is displaced to the axial stop 11.
• a stress of the clamping elements 8 generated by spring forces is released by relieving the energy connection 49.
• the clamping elements 8 emerge from the circumference of the holder 29 and generate a radial clamping force against the inner diameter of the first two sleeves 2 on the cantilevered side of the holder 29. Now, the winding spindle can be activated to wind up the threads.
• the tensioning device 7 is integrated in a longitudinal portion of the holder 29, which is insignificant for increasing the rigidity.
• the Drive shaft 46 and the bearing 45 perform to a maximum diameter.
• the installation space of the bearing 45 is limited only by the required wall thicknesses of the shell of the holder 29 and the carrier 47.

Landscapes

• Winding Of Webs (AREA)
• Winding Filamentary Materials (AREA)
• Spinning Or Twisting Of Yarns (AREA)

Priority Applications (3)

Applications Claiming Priority (4)

Publications (1)

Family

ID=42103863

Family Applications (1)

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Cited By (2)

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Citations (6)

Family Cites Families (5)

• 2010
  • 2010-02-01 CN CN201080008764.5A patent/CN102325711B/zh active Active
  • 2010-02-01 WO PCT/EP2010/051168 patent/WO2010094553A1/de active Application Filing
  • 2010-02-01 JP JP2011550503A patent/JP5453456B2/ja active Active
  • 2010-02-01 EP EP10701876.4A patent/EP2398727B1/de not_active Not-in-force

Patent Citations (6)

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