EP1925580B1 - Winding machine - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION

The invention relates to a winding machine for winding a thread to a thread winding according to the preamble of claim 1.

STATE OF THE ART

Out EP 1 213 246 B1 is a winder for winding a thread to a filament winding known. The winding machine has a revolving about a horizontal axis turret in the form of a disc, extending from the opposite on the circumference projecting two separately drivable spindles. With rotation of the spindles, the thread can be wound up into a thread winding. While a spindle is provided with a filament winding in an upper position, the spool with the filament winding can be removed from the spindle in the lower position, and the spindle can be prepared for a new winding operation, for example by putting a sleeve on the spindle. With the completion of the filament winding in the area of the upper spindle and the preparation of the lower spindle, the turret can be rotated through approximately 180 ° and a new winding process can be initiated. A thread is fed to the bobbin or the thread winding in the region of the contact of a pressure roller with the thread winding. The pressure roller is rotatably mounted relative to a frame having a vertical translational displacement degree of freedom, wherein the frame is guided over two vertically oriented guide rods. Between the frame and a housing of the winder, an actuator is interposed, which is designed as a pressure cylinder and in the direction of the degree of freedom exerts a force on the frame. The contact pressure of the pressure roller to the filament winding results from the vectorial Sum of the weight of the frame and the pressure roller, reduced by the force of the impression cylinder. A suitable control of the printing cylinder can be raised with increasing diameter of the yarn winding of the frame with the pressure roller, wherein a control of the pressure cylinder is such that the contact pressure of the pressure roller is kept constant at the filament winding. The control unit used for this purpose has an electromagnetic control valve which regulates a compressed air supply of the pressure cylinder, a compressed air supply, a control circuit, an adjusting device for setting the constant contact pressure and sensors for detecting the actual force conditions. A regulation of the pressure and thus the pressing force is carried out to a fixed value with a predetermined narrow tolerance, here ± 3%.

Further disclosed EP 1 213 246 B1 an alternative embodiment in which the degree of freedom between the spindle and the thread winding on the one hand and pressure roller on the other hand is not translational, but rather as a rotational degree of freedom: In this case, the pressure roller is rotatably mounted relative to a frame which is designed as a pivoting arm. The impression cylinder acts on the swivel arm. The lever arm of the force generated by the pressure cylinder is kept constant for the disclosed embodiment in that the swing arm is not pivoted as possible with an increase in the diameter of the thread winding. This is achieved in that with increasing the diameter of the thread winding of the turret is slightly rotated so that the contact point of the pressure roller on the thread winding remains approximately stationary regardless of the thickness of the thread winding.

DE 197 05 262 A1 discloses a method for controlling the contact force as a function of the ratio of the rotational speed of the pressure roller to the rotational speed of the thread winding, wherein the control is designed such that as possible a slip-free state between the pressure roller and the thread winding is achieved.

DE 102 53 489 A1 addresses the problem that acts with changing the relative position of a thread winding to a pressure roller, a variable weight component of force on the filament winding. Under the premise according to DE 102 53 489 in that such changes in the weight force component are to be compensated as far as possible, the winding machines require complex force measuring devices which detect changed contact forces and enable an adjustment of an actuator so that the contact force is kept constant. DE 102 53 489 suggests instead of the use of the aforementioned force measuring device, a priori depict the relationship between the relative position of pressure roller and filament winding and the acting weight component. With the detection of the relative position via a suitable sensor, a required change in the force of an actuator can then be determined so that a constant contact force results. Also the off DE 102 53 489 A1 known embodiment is based on the basic idea that the actuator acts with a constant lever arm on a pressure roller supporting the swivel arm, wherein changes in the diameter of the thread winding are compensated by a deflection movement of the turret. According to DE 102 53 489 find winding machines in which a relative movement between the pressure roller and filament winding is brought about by means of linear guides and in which only a spindle is present, only use for a discontinuous winding of the thread.

Also DE 10 2005 005 096 A1 assumes that the contact force between the pressure roller and the filament winding should remain approximately constant during the winding cycle. The document proposes to provide a freely accessible adjusting mechanism on a front side of the winder, over which the contact force is adjustable by an operator before the start of the winding process.

Out DE 10 2004 032 514 A1 It is known to rotatably support a cross-wound bobbin on a creel. The creel itself is rotatably mounted with respect to a stationary axis, the creel forms a kind of "pendulum" due to its eccentric center of gravity. The creel is supported as a "horizontal pendulum" against a drive roller. As the diameter of the cross-wound bobbin increases, the deflection angle of the "horizontal pendulum" changes and, as a result of the increased weight of the cross-wound bobbin, the contact pressure between the cross-wound bobbin and the drive roller increases. To compensate for such changes in the contact pressure of the cross-wound bobbin on the drive roller acts on the creel, a force introduction means with a lever arm, which is variable with the increase in the diameter of the cheese, so an increase in the deflection angle of the horizontal pendulum. Here, the geometric relationships are selected such that for minimum diameter of the cheese, the force introduction means causes a torque which increases the contact force of the cheese to the drive roller, while for a mean diameter of the lever arm is zero and with a further increase in the diameter of the cheese from that of the force introduction means moment caused its sign in such a way reverses that this leads to a relief with a reduction in the contact force of the cheese to the drive roller. This relief can compensate for the increase in the weight of the cheese with the increase in the diameter of the same. Still strikes DE 10 2004 032 514 A1 an electromotive actuating device, via which the previously explained geometric relationships at the beginning of a coil travel and / or in the course of the coil travel can be changed. The force introduction means is designed as an air spring, which is acted upon in an equilibrium position with a constant, adjustable pressure, which is secured by a check valve. A corresponding embodiment is made DE 41 21 775 A1 known, in which case acts in addition to a spring a pressure medium-loaded piston-cylinder actuator unit on the creel.

US 3,672,584 such as US 3,672,583 disclose a winder in which the pressure roller is rotatably mounted stationary. The spindle is mounted in the manner of an upright, inverted pendulum, wherein the filament winding is supported at the beginning of the winding process approximately in a 1 o'clock position of the pendulum on the pressure roller. With increasing enlargement of the diameter of the thread winding, the pendulum moves over an unstable equilibrium position in the 12 o'clock position up to an 11 o'clock position. While the weight of the upright pendulum in the 1 o'clock position provides a maximum force for the contact force between the pressure roller and the filament winding, this force drops to 0 in the 12 o'clock position. For further enlargement of the diameter of the filament winding, the weight force creates a moment on the inverted pendulum, which is inclined to move the filament winding away from the pressure roller. The documents suggest to additionally influence the dependence of the contact pressure between filament winding and pressure roller by a plurality of springs which are articulated with a Federfußpunkt at different points of a frame of the winder and are hinged with their other foot points at different points of the pendulum, the springs under can attack at varying angles on the pendulum and u. U. are only effective over a partial path of the pendulum motion. A vote of the springs and their points of articulation is such that there is a decreasing with increasing diameter of the yarn winding contact force between the pressure roller and filament winding.

DE 37 18 391 A1 discloses a winder with a spindle with stationary during the winding spinning axis and a sliding relative to the spindle Fadenleitwerk with pressure roller. To specify the contact pressure between the pressure roller and the thread winding is a lever of constant length, which is articulated in an end region on the Fadenleitwerk, while the opposite end portion of the lever is displaceably guided along a guide curve of a Leitlineals. Between the two end regions, a tension spring engages the lever. The lever is inclined at an acute angle relative to the degree of freedom of movement of the yarn tail in the direction of the spindle. The geometry of the guide curve of the guide rule is selected such that the contact pressure between the pressure roller and the thread winding decreases over the winding cycle. In this case, the contact pressure depends on the dependent of the thickness of the thread winding spring force and the angular orientation of the lever. However, this angular orientation is dependent on the thickness of the filament winding and the geometry of the guide curve of the guide ruler.

US 3,845,911 concerns a winding machine with a pressure roller rotating about a stationary axis of rotation and with a change in the thickness of the thread winding along a degree of freedom displaceable spindle. To specify the contact pressure of the spindle to the pressure roller, a first lifting cylinder is initially provided, which pulls the spindle in the direction of the pressure roller. A second lifting cylinder pulls the spindle away from the pressure roller at an angle of inclination, said angle being dependent on the diameter of the thread winding. The change in the influence of this second lifting cylinder as a result of the change in the angle with the change in the diameter of the yarn winding should ideally just compensate for the influence of the change in the weight of the yarn winding in the course of the winding cycle, so that the contact pressure between the spindle and pressure roller remains constant. However, the document also mentions that an enlargement or reduction of the contact force over the winding cycle can be achieved for different angular ratios.

Further prior art is out DE 10 2005 003 334 A1 and DE 601 16 243 T2 known.

OBJECT OF THE INVENTION

The invention has for its object to provide a winder for winding a yarn to a thread winding, in a simple but reliable way, a realization of the winding process adapted contact force between a pressure roller and a thread winding is possible.

SOLUTION

The object of the invention is achieved with the features of independent claim 1. Further developments of a winder according to the invention will become apparent according to the dependent claims 2 to 6.

DESCRIPTION OF THE INVENTION

The invention is based first of the finding that, in contrast to the aforementioned prior art, the assumption that the contact pressure between the pressure roller and filament winding during the winding process is to be kept as constant as possible for some winding operations and Spulgüter may be inaccurate. Rather, it has been found that the mechanical properties of the "abutment" formed by the thread winding for the pressure roller change with increasing diameter of the thread winding, since the rigidity decreases with increasing diameter. On the other hand, with increasing the diameter of the thread winding excessive contact forces can lead to an undesirable axial "bulging" of the thread winding.

On the other hand, the present invention is based on the finding that the solutions known from the prior art for specifying a (constant) contact pressure require suitable control of an actuator with a complex measuring and control technology. As a result, the design effort, the susceptibility to errors, the maintenance intensity, the cost of calibrations of a sensor and the complexity of the winder is increased.

Furthermore, the invention has recognized that basically two different types of known prior art winding machines are known from the prior art:

A. Spooling machines with a rotational degree of freedom of coil or pressure roller

For such a design is basically the weight of the pivoted body, in particular the coil with its own weight changed over the winding cycle or the pressure roller and a suitable holding device or rocker, via a trigonometric function in the contact pressure between the pressure roller and a coil. Thus, any regulation of the contact pressure for such a design has a nonlinearity to the object, which per se can lead to increased expense for the structural design and / or the regulation during the winding cycle. Such a design is the documents DE 197 05 262 A1 . DE 102 53 489 A1 . DE 10 2005 055 096 A1 . DE 10 2004 032 514 A1 . US Pat. No. 3,672,584 A . US Pat. No. 3,672,583 A and DE 41 21 775 A1 assigned. Done according to DE 10 2004 032 514 A1 respectively. DE 41 21 775 A1 a generation of a loading or unloading torque via a compression spring or a combination of a compression spring with a piston-cylinder unit, so is the effective direction of the force of the air spring and / or the piston for determining a contact force between the coil and pressure roller as a further non-linearity Cylinder unit to consider. In addition there is the necessary consideration of the non-linearly variable lever arm over the deflection angle. For designs with rotational degree of freedom is u for a control of the actuator. U. the knowledge of the deflection angle of the rotational degree of freedom required to properly map the power transmission chain of the actuator, taking into account the trigonometric functions in a scheme. In summary, it can thus be established for a design with a rotational degree of freedom that the rotational degree of freedom already results in a change of the contact force as a function of the deflection of a coil frame already without suitable actuating means, which already induce a desired force characteristic in the case of an optimal design which is not possible in all cases can, in the case of a suboptimal design but a complicated control of the actuating force of an actuator or the influence of the transmission paths and the lever arm of the actuating force of the actuator has the consequence.

B. types with translatory degree of freedom

The situation is different for designs with a translational degree of freedom for relative displacements between the coil and the pressure roller. Such a design is the documents EP 1 213 246 B1 . DE 10 2005 003 334 A1 and DE 601 16 243 T2 assigned. In such designs, in principle, the influence of a dead weight of a deflection along the degree of freedom is independent, so that their consideration in both the design and for a scheme is relatively simple and does not require consideration of a nonlinearity due to a trigonometric function. While it is absolutely necessary for designs with a rotational degree of freedom that a linear-acting actuator can generate only a force component at least for individual deflections along the degree of freedom, which acts in the direction of the degree of freedom and thus always a force component is present, which provides no contribution to the contact force , The expert for winding machines in designs with translatory degree of freedom follows the apparent matter of course that an actuator to increase the efficiency of course in the direction of the translational degree of freedom to act, so that the actuator does not have to generate a force component that does not affect the contact pressure. This is the case in all known types with translational degree of freedom. However, the said premise of the orientation of the actuator in the direction of the translatory degree of freedom also necessarily means that any variation of the contact pressure between the pressure roller and the coil must be brought about that a control affects the actuating force of the actuator.

The present invention deviates from the prejudices of the person skilled in the art explained above and, for a design with a translational degree of freedom, accepts the apparent disadvantage that only one component of the actuating force of the actuator is used for influencing the contact pressure between the pressure roller and the coil. This supposed disadvantage is at least compensated by the fact that an actuator can be used, whose actuating force can be constant, that is, is unregulated or only has to be regulated to a constant value.

Surprisingly, the present invention uses the trigonometric functions for an automatic influencing of the power transmission, while these are not important for the dimensioning of the actuating force of the actuator. This results in a particularly simple, but effective construction of the winding machine according to the invention.

Based on these findings, an actuator is thus used according to the invention, which generates (at least for a winding process) a constant force. It is possible that the generated constant force of the actuator is kept variable for different winding operations. For the purposes of the invention, a "constant force" is understood to mean a force whose magnitude is within predetermined limits, for example ± 8, in particular ± 5, ± 3% or ± 1% of a desired value.

Despite the use of an actuator with a constant force generation according to the invention a variable contact pressure can be generated in that the constant force generated by the actuator does not act completely in the direction of a degree of freedom between the pressure roller and the spindle. Rather, only a component of this force acts in the direction of the degree of freedom. Here, the ratio of the force component to the constant force generated by the actuator is not constant during a winding operation, but rather on the distance between the spindle and pressure roller, that is dependent on the movement along the degree of freedom. This then results in a variable contact pressure for the pressure roller.

The invention thus does not follow the conventional aspiration of the experts to let the actuator to an optimal power and power output directly in the direction of the degree of freedom, but deliberately accepts that only one force component is used, while another force component of the force of the actuator remains unused. This alleged disadvantage of the embodiment according to the invention is compensated by the fact that the distance-dependent division of the force into an effective and an ineffective force component allows a distance-controlled influencing of the contact pressure, wherein u. U. on a complex sensor for detecting the distance or for detecting the contact pressure as well as a control or regulation according to the result of a detected signal can be omitted. Thus, the distance-dependent influencing of the contact force according to the invention provides a simple but efficient automatic influencing of the contact pressure.

A "thread" in the sense of the present invention is, for example, a thread in the classical sense to be understood as a twisted, spun or twisted structure. However, the "thread" can also be any other elongated winding material.

According to the invention, the degree of freedom is a linear degree of freedom, for example, oriented approximately vertically. In the event that such a linear degree of freedom correlates with the feed direction of the thread, a movement of the pressure roller in the direction of the degree of freedom with a change in the diameter of the yarn package results in a constant angle at which the yarn reaches the pressure roller. If the pressure roller is associated with a thread guide or traversing thread guide (hereinafter "thread tail"), the configuration according to the invention results in that the contact conditions between the thread guide and the thread do not change. If, for example, a thread is "fanned out" with the thread guide, a change in the angle could lead to altered fanning of the thread, which would ultimately result in the thread laying down in an unwanted state on the thread winding. On the other hand, could change with a change of said angle of the contact region of the thread with the Fadenleitwerk, which could also change the application location and angle of the thread to the filament winding in an undesirable manner. A further complication may be given when a traversing yarn guide is provided in the winding machine, which requires a suitable, during the winding cycle is not variable inlet angle of the thread for proper function.

A particularly simple realization of a coupling of the division of the force in the effective and the ineffective force component with the movement of the degree of freedom, so the distance between the spindle and pressure roller, is given if according to the invention a pendulum support is used, the inclined at an angle α relative to the degree of freedom is, wherein the angle α is dependent on the distance between the spindle and the pressure roller.

• ein kraftführendes Bauteil verstanden,
• in welches vorrangig externe Kräfte in den Endbereichen eingeleitet werden und
• welches vorrangig einer Normalkraft in Richtung der Verbindung der Endbereiche mit verschwindenden Querkräften ausgesetzt ist.

Under a pendulum support is within the meaning of the invention

• understood a force-carrying component,
• in which primarily external forces in the end areas are initiated and
• which is primarily exposed to a normal force in the direction of the connection of the end regions with vanishing transverse forces.

The arrangement of the pendulum support at the angle α results from the geometric relationships that the force component acting in the direction of the degree of freedom is correlated via a trigonometric function with the normal force in the pendulum support. If the actuator influences the normal force in the pendulum support, then the dependence of the force component of the force of the actuator on the movement in the direction of the degree of freedom is realized in a simple manner.

In the simplest case, the actuator itself forms the pendulum support, wherein the actuator can pivotally supported on a housing of the winder, while the other pivot point of the actuator is pivotally and at the angle α relative to the degree of freedom directly or indirectly supported on the pressure roller.

It is also possible that one end portion of the pendulum support is hinged in the direction of the degree of freedom, while the opposite end portion is guided in a relation to the degree of freedom at an angle, for example 90 ° oriented guide and the actuator acts on this end.

For a development of the invention has been shown that the formation of the actuator as a pressure medium-actuated, for example, pneumatic actuating cylinder is advantageous. For example, it is possible to supply a plurality of actuating cylinders via a single pressure medium source in the event that several threads are to be wound simultaneously to form several thread coils. In addition, pressure medium elements, such as pneumatic valves, are available at low cost, via which a provision of a constant pressure and thus a constant force for the actuator is possible. Furthermore, it has been shown that such pressure medium elements are very reliable even in a permanent operation.

In the event that the dependence of the force component acting in the direction of the degree of freedom (for example, for a sensitive adaptation to the conditions and / or for a change in the ratios for different winding operations) should be variable, a location of the articulation point of the pendulum support can be changed be. Such a change, for example, manually by the user by connecting the pendulum support optionally with multiple shots, a slot o. Ä .. Also possible is an automatic change in the position of a pivot point of the pendulum support, for example via a stepper motor o.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1

zeigt eine teilgeschnittene Seitenansicht einer erfindungsgemäßen Spulmaschine.

Fig. 2

zeigt einen Schnitt II-II durch eine Spulmaschine gemäß Fig. 1.

Fig. 3

zeigt einen eine Pendelstütze bildenden Aktuator zur Beeinflussung einer Anpresskraft zwischen Spule und Anpresswalze.

Fig. 4

zeigt einen Teilschnitt bei Schnittführung quer zur Längsachse einer Spule mit einer Anpresswalze, einem Fadenleitwerk sowie einem Changierfadenführer.

Fig. 5

zeigt eine Prinzipskizze einer pneumatischen Baugruppe zur Bereitstellung eines (weitestgehend) konstanten Pneumatikdrucks für einen als Pneumatikzylinder ausgebildeten Aktuator.

In the following the invention will be further explained and described with reference to preferred embodiments shown in the figures.

Fig. 1

shows a partially sectioned side view of a winder according to the invention.

Fig. 2

shows a section II-II by a winder according to Fig. 1 ,

Fig. 3

shows a pendulum support forming actuator for influencing a contact force between the coil and pressure roller.

Fig. 4

shows a partial section with a sectional view transverse to the longitudinal axis of a coil with a pressure roller, a thread guide and a traversing yarn guide.

Fig. 5

shows a schematic diagram of a pneumatic assembly for providing a (largely) constant pneumatic pressure for a trained as a pneumatic cylinder actuator.

DESCRIPTION OF THE FIGURES

Fig. 1 shows a partially sectioned side view of a winder 1, which serves to wind a thread 2 on a spool 3 to a thread winding 4. The winder 1 has a turret 5 (s. Fig. 2 ), which is formed according to the illustrated embodiment as a disc and of the circumferentially opposite two spindles 6, 7 protrude. The spindles 6, 7 can be offset by drive units 8, 9 independently of each other and relative to the turret 5 about their longitudinal axes in rotation. On the spindles 6, 7 are each sleeves 10, 11, on which the thread 2 is wound into a thread winding 4 for the purpose of forming a coil 3. Above the bobbin 3 is a thread guide 12, which is mounted on a guide 13, for example a linear guide, or a plurality of guides along a degree of freedom 14 movable or displaceable. The thread guide 12 has a traversing device 15, over which in an angular range 16, the location of feeding the thread 2 to the thread winding 4 with respect to the longitudinal axis of the spindle 6 and the orientation of the thread to the circumferential direction in the application of the thread 2 to the filament winding. 4 is changeable. Furthermore, the thread guide 12 has in the region of the traversing device 15 upper thread guide rollers 17 which align the thread independently of the angle in the angular region 16 by specifying double-sided axial guides to an axis 36. In addition, lower thread guide rollers 18 are provided which oriented parallel to the longitudinal axis of the spindle 6, respectively Fig. 2 provide offset-oriented contact surfaces, for example, a fanning out of the thread 2 and / or a specification of approximately in Fig. 2 vertically oriented supply of the thread 2 to the pressure roller 19 serve.

Below the Fadenleitwerks 12 is rotatably mounted relative to this a pressure roller 19, whose longitudinal axis is oriented parallel to the longitudinal axis of the spindle 6. Subsequent to the lower yarn guide rollers, the yarn is guided over the partial pressure angle around the pressure roller 19. The thread is applied in the contact region of the pressure roller 19 to a lateral surface 32 of the thread winding 4.

For the illustrated embodiment, an actuator 20 is formed as a pneumatic actuating cylinder, which is acted upon via a pressure medium line 21. The actuator 20 forms a pendulum support 22. The pendulum support 22 is articulated in an end region 23 articulated against a housing-fixed strut 24 of the winder 1, wherein the pendulum support 22 to a vertical to the plane according to Fig. 1 oriented axis is pivotable. The opposite end portion 37 of the pendulum support 22 is directly or indirectly on the Fadenleitwerk Hinged 12, here adjacent to the guide 13. Compared with the degree of freedom 14, the pendulum support forms an angle α. As a result of the selected articulation points 33, 34 of the pendulum support 22, the angle α changes from an initial angle α ₁ to an angle α ₂ with an increase in the diameter of the thread winding 4, wherein α ₁ > α ₂ applies. If F _N denotes the normal force in the pendulum support 22, which coincides with the force of the actuator 20 for the embodiment shown in the figures, the force component F _FG acting in the direction of the degree of freedom 14 results $${\mathrm{F}}_{\mathrm{FHG}}\mathrm{=}{\mathrm{F}}_{\mathrm{N}}\left(\cos \right)\mathrm{,}$$

For the change in the angle from α ₁ to α _{2 described} above, a change in the force component acting in the direction of the degree of freedom 14 results as follows: $$\mathrm{\Delta }{\mathrm{F}}_{\mathrm{FHG}}\mathrm{=}{\mathrm{F}}_{\mathrm{N}}\left(\cos {\mathrm{\alpha }}_{\mathrm{2}}\mathrm{-}\mathrm{<figure-callout\; id="1"\; label="cos\; \alpha "\; filenames="imgf0001.png"\; state="\{\{state\}\}">cos\; </figure-callout>}{\mathrm{\alpha }}_{}{\mathrm{}}_{\mathrm{1}}\right)\mathrm{,}$$

Thus, the force acting on the Fadenleitwerk 12 force component F _FG of the movement in the direction of the degree of freedom 14 and thus the distance between the pressure roller 19 and the spindle 6 is dependent. The force component F _{H which} does not act in the direction of the degree of freedom arises via $${\mathrm{F}}_{\mathrm{H}}\mathrm{=}{\mathrm{F}}_{\mathrm{N}}\mathrm{sin\; .alpha}\mathrm{,}$$

The non-effective force component F _H is received by the guide 13 for the illustrated embodiment.

For a given stroke of the yarn tail 12 in the direction of degree of freedom 14 the change in the force Δ F _FHG can be changed by adjustment of the basic geometry, thus changing the coupling points 33, 34 of the pendulum support 22. By this, the work area can be used in the above-mentioned cos functions be moved. If the working range of the winding machine in the vicinity of the angle α = 0, the dependence of the force component F _FHG of the stroke of Fadenleitwerks is minimized, while for the other theoretical limit of a work area in the vicinity of the angle α = 90 °, the change in the force component F _{FHG is} maximum.

To allow for adjustment 24 several possible pivot points 34, for example, via a plurality of holes 25, provided for the pendulum support 22 in the strut 24.

The actuator 20 extends on the side facing away from the coil 3 of the turret 5, preferably hidden by a machine base plate. How out Fig. 2 can be seen, the degree of freedom 14 may be inclined relative to the vertical. Without thereby leaving the basic principle of the invention, it is thus possible that the angle α (deviating from the dimensioning of the angle α in the Fig. 1 and 3 ) is oriented in any spatial direction.

Fig. 5 shows a pressure medium unit 26, which serves to act on the pressure medium line 21. The pressure medium unit 26 is supplied with a pressure medium 27 under an operating pressure. The pressure medium unit 26 has a control valve 28 and a pneumatic switching device 29, which is suitably controlled via a control or regulating unit 30 by means of a control line 31. Via a bypass line 35, the control valve 28 can be bypassed by the control or regulating unit 30 with appropriate wiring of the switching device 29, so that a complete lifting of the pressure roller 19 is possible. With regard to alternative embodiments for providing the pressure medium and for regulating the pressure of the pressure medium is on the corresponding parts of EP 1 213 246 B1 directed.

The winding machine is used in particular for the production of cheeses, for which the incoming thread travels through a traversing thread guide along the longitudinal axis of the spool. In the aufzuspulenden thread 2 is in particular a carbon fiber material, such as a carbon fiber ribbon. For the illustrated embodiment, the angle of the traversing thread guide does not change during the winding cycle with respect to the incoming thread.

The contact pressure of the pressure roller 19 at the thread angle 4 results from the vectorial sum of the weight of the thread guide 12 and any additional components and the force component F _{FHG of} the actuator 20 in the direction of the degree of freedom 14. In the event that the degree of freedom 14 is not vertically oriented, results in a corresponding reduction in the contact force on the cos of the angle of the degree of freedom 14 with respect to the vertical.

LIST OF REFERENCE NUMBERS

1

Dishwasher

2

thread

3

Kitchen sink

4

filament winding

5

turret

6

spindle

7

spindle

8th

drive unit

9

drive unit

10

shell

11

shell

12

thread tail

13

guide

14

degree of freedom

15

Traversing device

16

angle range

17

upper thread guide roller

18

lower thread guide roller

19

pressure roller

20

actuator

21

Pressure medium line

22

Stabilizer

23

end

24

strut

25

drilling

26

Pressure means unit

27

print media

28

control valve

29

switchover

30

Control unit

31

control line

32

lateral surface

33

articulation

34

articulation

35

bypass line

36

axis

37

end

Claims (6)

1. Winding machine (1) for winding a winding material or thread (2) to a wound package (4) with

   a) at least one spindle (6),

   b) a traversing device (12) with a pressure roller (19),

   ba) said pressure roller having a distance from the spindle (6) which is changeable along a degree of freedom (14) and

   bb) said pressure roller being pressed against the outer surface (32) of the wound package (4),

   c) the wound package (4) being driven for rotation and the winding material or thread (2) is fed to the wound package (4) in the contact region of the pressure roller (19) with the wound package (4),

   d) at least one actuator (20) at least influencing the contact force of the pressure roller (19) with the wound package (4),
   wherein

   e) the actuator (20) produces a constant force (F_N) and

   f) only a force component (F_FHG) of the force (F_N) of the actuator (20) with an orientation along the degree of freedom (14) acts upon the traversing device (12) and the ratio of the force component (F_FHG) acting along the degree of freedom (14) and the force (F_N) of the actuator (20) is dependent on the distance between the spindle (6) and the pressure roller (19),

   characterised by
   the degree of freedom (14) being a linear degree of freedom and the actuator (20) influencing the normal force (F_N) in a pendulum rod (22) wherein the pendulum rod (22) is slanted with an angle α with respect to the degree of freedom (14), said angle α being dependent on the distance of the spindle (6) from the pressure roller (19) and wherein one end region (23) of the pendulum rod (22) is linked with the housing and the other end region (37) of the pendulum rod is directly or indirectly linked with the traversing device (12).
2. Winding machine (1) according to claim 1, wherein the actuator (20) is a pressurized cylinder.
3. Winding machine (1) according to claim 1 or 2, wherein the position of at least one linking point (33; 34) of the pendulum rod (22) is changeable.
4. Winding machine (1) according to one of claims 1 to 3, wherein the actuator (20) comprises a pneumatic cylinder.
5. Winding machine (1) according to one of claims 1 to 4, wherein the actuator (20) is connected with a control unit (30), said control unit (30) controlling the actuator (20) to a constant force.
6. Winding machine (1) according to claim 4, characterised by said pneumatic cylinder being pressurized via a control valve (28), said control valve (28) providing the pneumatic cylinder being pressurized with a constant pressure.

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