Winding machine fixing mechanism, winding machine and method for coupling and / or decoupling a winding sleeve from a winding spindle of a winding machine

Abstract

The invention relates to a winding machine (1) comprising a winding machine securing mechanism (44) for securing a winding sleeve (4) on a winding spindle (3). The winding machine securing mechanism (44) according to the invention can be manipulated by means of a movement control. By means of the manipulation of the movement control, the winding machine securing mechanism (44) can be transferred from a release position into a securing position and / or from the securing position into the release position. During the movement control, a carrier element (5) is entrained by the movement of the winding sleeve (4). The carrier element (5) then causes the manipulation of the winding machine securing mechanism (44).

Description

Technical Field

[0001] This invention relates to a winding machine specifically designed for winding materials of arbitrary material composition and cross-section, particularly linear or strip-shaped materials. Furthermore, the invention relates to a winding machine fixing mechanism for securing a winding sleeve to a winding spindle. In this case, the winding sleeve may also be designed as a drum sleeve with end-side limiting discs. Within the framework of this invention, the fixing of the winding sleeve may refer only to the axial fixing of the winding sleeve to the winding spindle. Alternatively or cumulatively, the fixing may also include the coaxial orientation of the winding sleeve with the longitudinal axis of the winding spindle and / or circumferential fixing to transmit the driving torque of the driven winding spindle. The invention also relates to a method for torsionally coupling and / or decoupling the winding sleeve from the winding spindle of the winding machine. Background Technology

[0002] In known winding machines, the tension of the winding sleeve is achieved via a lever, which is operated manually, electrically, pneumatically, or hydraulically. By manipulating the lever, a clamping spring element is pressed against the inner surface of the winding sleeve, thereby generating the frictional force required to transmit the drive motion of the driven winding spindle to the winding sleeve. If the spool and the winding wound on the winding sleeve should be removed from the spindle at the end of the winding cycle, the lever is manipulated in the opposite direction, thereby releasing the winding sleeve again.

[0003] As known from US2623710A and the website www.federnfabrikschmid.com / de / ballonfedern, a spindle is equipped with a balloon spring that wraps around the spindle as an elastic pad. In the unloaded state, the outer diameter of the balloon spring is larger than the inner diameter of the winding sleeve. As the winding sleeve is pushed onto the balloon spring, the balloon spring elastically deforms radially inward, thereby applying the compressive force of the balloon spring to the inner surface of the winding sleeve, thus tensioning the winding sleeve.

[0004] JP2009-012870A discloses a winding machine fixing mechanism in which a winding sleeve is internally tensioned in the winding machine-facing end region by a fixing element. The fixing element is a blade evenly distributed around the circumference of the winding spindle, which is radially loaded inward by a rubber ring in the released position. Despite being spring-loaded, a carrier in a bayonet-type locking device remains in the released position on the spindle. If the winding sleeve is pushed onto the spindle, the winding machine-facing end of the winding sleeve abuts against the tapered side of the carrier. By resisting the spring loading and the torsional pressure of the carrier on both the winding sleeve and the carrier, the bayonet-type locking device of the carrier is released. The spring then presses the carrier into the interior of the winding machine-facing end of the winding sleeve. Here, the blades slide along grooves on the tapered side of the carrier, thereby separating the blades from each other and pressing them against the inner surface of the winding sleeve. In this fixed position, the winding spindle is frictionally fixed by pressing the blade against the inner surface of the winding sleeve.

[0005] US1882950A discloses a winding machine fixing mechanism in which a circumferentially distributed fixing lever is pivotally supported on a flanged head. The first lever portion of the fixing lever has a contact element at its flange-facing end that presses radially outward against the inner surface of a winding sleeve when the fixing lever deflects. Another lever portion of the fixing lever, facing the flange, has an actuating ramp. Pushing the winding sleeve onto the actuating ramp causes the fixing lever to deflect, thereby causing the winding sleeve to frictionally abut against the actuating ramp with its inner surface on one hand, and frictionally abut against the friction element on the other.

[0006] CH165476A discloses a tensioning head for a winding sleeve having a tapered inner surface. In a fixed position, the tapered inner surface of the winding sleeve rests against a corresponding tapered outer surface of a support. The axial relative position between the winding sleeve and the support is fixed by a tension spring surrounding the support. When the winding sleeve is pushed onto the support, the support moves against the loading of a spring force supported on the support. During this movement, the end face of the support pushes the tension spring along the ramp surface of the support, thereby pressing the tension spring radially outward against the inner surface of the winding sleeve. By manually operating a sliding pin extending from the winding sleeve in the fixed position, the frictional lock on the axial position of the winding sleeve relative to the support can be released, thereby unlocking a locking ball that disengages the frictional connection between the tension spring and the inner surface of the winding sleeve.

[0007] According to US4375278A, the winding sleeve can be frictionally fixed to a pressure sleeve that is axially supported on the spindle and resists spring force by radial tensioning of the O-ring and the inner surface of the winding sleeve.

[0008] US10577217B1 discloses a winding machine fixing mechanism in which a fixing element designed as a leaf spring presses radially outward against the inner surface of a winding sleeve to frictionally fix the winding sleeve. Here, the increase in the leaf spring curvature is achieved by a drive member, which is actuated from the end side of the winding sleeve and slides along the inner surface of the winding sleeve. Summary of the Invention

[0009] The objective of this invention is to provide a winding machine fixing mechanism, a winding machine, and a method for coupling and / or decoupling a winding sleeve from a winding spindle, wherein the winding machine fixing mechanism, winding machine, or method is improved in the following aspects:

[0010] - Installation space conditions and / or

[0011] - Operation security and / or

[0012] - Costs incurred for coupling the winding sleeve to the winding spindle and / or decoupling the winding sleeve from the winding spindle.

[0013] According to the invention, the task is solved by the features of the independent claim. Further preferred designs according to the invention can be derived from the dependent claims.

[0014] This invention is based on the understanding that using levers to secure and release the winding machine's fixing mechanism, as is the case with existing technologies, is disadvantageous because it requires not only pushing the winding sleeve onto the winding spindle and pulling it off (manually, electrically, pneumatically, or hydraulically), but also manipulating the lever. Furthermore, to increase production, as many winding machines as possible are arranged within a predetermined factory work area, necessitating that the winding machines be placed as close as possible to each other and / or stacked on top of each other. Since the lever is typically mounted in the frame area, a certain intermediate space must be left between the winding spindles of two adjacent winding machines and the coils wound on the winding spindles to allow for manipulation of the lever through this intermediate space.

[0015] According to the present invention, a winding machine fixing mechanism is provided, which can be used to fix the winding sleeve onto the winding spindle. Within the framework of the present invention, this fixing mechanism can alternatively or cumulatively perform the following functions:

[0016] - By providing a stop, the axial position of the winding sleeve is predefined in at least one direction and / or

[0017] - Axially tension the winding sleeve and / or

[0018] -Radial tension winding sleeve and / or

[0019] - The orientation of the winding sleeve relative to the longitudinal axis of the winding spindle is predefined.

[0020] According to the present invention, it is proposed to operate the winding machine fixing mechanism by means of motion control. In the winding machine fixing mechanism of the present invention, this motion control enables operation from a release position (in which the winding sleeve can be pushed onto the winding spindle) to a fixed position. The winding of the coil can then be performed in the fixed position thus achieved. Alternatively or cumulatively, the motion control enables operation from the fixed position to a release position, in which the winding sleeve (and possibly the winding wound thereon) can be removed from the winding spindle.

[0021] According to the invention, during motion control, the drive member that causes the operation of the winding machine fixing device is driven by the movement of the winding sleeve. In this case, the movement of the winding sleeve is an axial upward movement in which the winding sleeve is pushed onto the winding spindle. Therefore, the drive member is driven by at least one axial component, wherein, within the framework of the invention, the drive member can be driven according to any cam track, as long as the cam track has an axial component. The drive member can also be designed as a deflectable lever, which is deflected by the movement of the winding sleeve by an axial component. Within the framework of the invention, the driving of the drive member by the movement of the winding sleeve preferably occurs only in the axial direction, and therefore the drive member is movably supported by a linear guide in the direction of the longitudinal axis of the winding spindle, for example, relative to the winding spindle.

[0022] The design of this invention is also based on the understanding that when the wound sleeve is tensioned by means of the balloon spring mentioned at the beginning, the following factors are necessarily correlated:

[0023] - The force required to push the winding sleeve onto the winding spindle and pull the winding sleeve off the winding spindle.

[0024] -Tension force,

[0025] This depends on the coefficient of friction between the balloon springs, the radial interference of the balloon spring relative to the inner diameter of the winding sleeve, and the radial stiffness of the strip spring element of the balloon spring. If the tension of the winding sleeve is doubled in the design for such a balloon spring, the force required to push up and pull down will also be doubled.

[0026] According to the invention, this correlation can be addressed in certain situations, particularly through motion control (which is achieved by the driving of the drive element caused by the movement of the winding sleeve) and other measures of the winding machine fixing mechanism, which will be described below.

[0027] According to the present invention, the winding sleeve is fixed on the winding spindle of the winding machine by a fixing device.

[0028] For the solution of the present invention, the fixing device includes an expansion element and at least one fixing element or multiple expansion elements having associated fixing elements. In this case, at least one fixing element abuts against the expansion element, wherein contact is made through at least one inclined surface of the expansion element and / or the fixing element. The movement of the drive element caused by the movement of the winding sleeve results in relative movement between the expansion element and the fixing element, wherein this relative movement is guided by the inclined surface. Due to the inclined surface, the distance between the fixing element and the longitudinal axis of the winding spindle changes with the relative movement. Therefore, the distance between the fixing element and the spindle axis in the fixed position is greater than the distance in the released position. Due to this change in distance, the fixing element can be radially pressed against the winding sleeve from the inside, and thus the contact pressure can be ensured by utilizing a certain elasticity of the fixing element or a force flow towards the fixing element. According to the present invention, the fixing element has a fixing section arranged behind the winding sleeve after the winding spindle is pushed up in the pushing direction. In this configuration, the fixing section is arranged radially outside the inner diameter of the winding sleeve, thus forming an axial stop for the winding sleeve, preventing it from being pulled off the winding spindle. Here, the fixing section of the fixing element can also function in such a way that it applies an axial force to the winding spindle, thereby axially tensioning it between the drive element and the fixing element. In the design of this invention, the expanding element and at least one fixing element are connected by an interaction of inclined planes, providing a wedge-shaped or tapered connection in the fixed position, thereby ensuring particularly reliable fixation of the winding spindle. The self-locking and / or transmission ratio of this wedge-shaped or tapered connection can also be selected depending on the choice of the inclined plane angle.

[0029] While a fixing device may essentially have only one fixing element, extending only partially or entirely in the circumferential direction and expanding radially during operation, the present invention proposes a design for a fixing mechanism for a winding machine in which the fixing device has multiple fixing elements arranged (uniformly or non-uniformly) around the circumference of the winding spindle. These fixing elements are pressed radially inward against the circumferential surface of the winding spindle by a spring device, which may consist of one or more springs, such as circumferential springs extending in a closed manner around the fixing elements in the circumferential direction. The fixing element may then have a ramp in an end region that interacts with the expansion element or an expansion element. Preferably, the at least one expansion element has a ramp whose inclination angle coincides with the inclination angle of the ramp of the fixing element.

[0030] Another suggestion of the invention is that the actuating member is supported by a control spring. The control spring moves in an upward direction by applying a thrust to the actuating member through a winding sleeve. The control stroke can then utilize the energy stored in the control spring as it is pushed upward to actuate the fixing device, resulting in the fixing device being actuated from a released position to a fixed position and / or from a fixed position to a released position.

[0031] Another suggestion of the present invention is that the force flow between the drive member and the fixing device extends through a grooving unit. Here, the grooving unit, for example, causes a change in the distance between the drive member, the actuating member, or the end of the actuating sleeve and the aforementioned expansion element.

[0032] For the design of the ballpoint pen mechanism, for example, a so-called "ballpoint pen mechanism" can be used. Descriptions using keywords such as "ballpoint pen mechanism" (German: Kugelschreibermechanik, English: Ballpoint Pen Mechanism) or "Pen Exchange" can be found on various websites. The main characteristic of the ballpoint pen mechanism is that the operating button at the end of the pen moves towards the spring during its push-up stroke under the action of the operating spring. After the pressure applied to the operating button is released, the spring generates the opposite operating stroke of the operating button. Through the push-up stroke and the operating stroke of the button, the ballpoint pen refill can extend from an invalid position within the pen casing, where the extended position is fixed. To retract the ballpoint pen refill, the user's thumb, while reloading the operating spring, causes another push-up stroke on the operating button, and the operating spring pushes the operating button back during the new operating stroke. The winding machine fixing mechanism of the present invention can also use a corresponding mechanism in principle where the slide body and the slide interact accordingly. Here, the operating button is not operated by the operator, but the carrying member is operated by pushing the winding sleeve toward the carrying member with a thrust in the upward direction, and the movement of the ballpoint pen refill to the extended position and the retracted position corresponds to the movement of the end side of the operating sleeve between two positions, which correspond to different distances between the end side of the operating sleeve and the expansion element. Therefore, within the framework of the present invention, any known ballpoint pen mechanism can be used.

[0033] One suggestion of the present invention is that the slide unit has a slide groove and a slide body movable along the slide groove. In this case, the slide body can be designed, for example, as a slide pin, and the slide unit can be designed as a slide sleeve, wherein the slide groove is a circumferential slide groove extending along the circumference of the slide sleeve. The slide pin can engage with the circumferential slide groove radially.

[0034] The chute unit can be pre-defined in a first axial position. In this first axial position, the retaining device is in a released position, allowing the winding sleeve to be pushed onto or pulled off the winding spindle. Furthermore, the chute unit can be pre-defined in a second axial position. In this second axial position, the actuating member is actuated by the winding sleeve, causing the loading spring to be tensioned and providing energy that can be used to actuate the retaining device during the actuation stroke. The chute unit also has a third axial position for the chute body. In this third axial position, the retaining device is in a fixed position, whereby the winding sleeve is fixed, clamped, or axially locked onto the winding spindle. Finally, the chute unit is pre-defined in a fourth axial position for the chute body. In this fourth axial position (and the second axial position), the actuating member is actuated by the winding sleeve under the loading of the actuating spring. The energy stored in the actuating spring in this way can be used to actuate the retaining device during the actuation stroke, returning it from the fixed position to the released position.

[0035] Here, the movements from the first axial position to the second axial position and from the third axial position to the fourth axial position can be caused by the movement of the winding spindle in the pushing direction. Therefore, this change in axial position is achieved by the operator manually or via a device moving the winding sleeve (and possibly the winding wound on it) in the pushing direction. The energy generated by these movements is stored in the operating spring. Conversely, the movements from the second axial position to the third axial position and from the fourth axial position to the first axial position are caused by the operating spring, and therefore the energy stored in the operating spring can be used for these movements.

[0036] Here, in the first and third axial positions, the distance between the drive element and the expansion element can be greater than in the second and fourth axial positions. This may result in the distance between the end of the operating sleeve and the expansion element being greater in the first and third axial positions than in the second and fourth axial positions. Within the framework of the invention, the groove can be a circumferential groove (as described above). In this case, the circumferential groove can rotate about the main shaft axis when moving between different axial positions.

[0037] To couple the drive member to the chute unit and / or fixing device, the present invention includes various possibilities. In one embodiment, the coupling of the drive member to the chute unit and / or fixing device is achieved via an actuating component, which may, for example, have a drive pin, an actuating lever, and an actuating sleeve. In this case, a sensor can detect the position and / or movement of the actuating component, thereby obtaining information about the operating state of the winding machine fixing mechanism. For example, the sensor can be used to determine whether the winding machine fixing mechanism is in a released or fixed position. The sensor can be an analog or digital sensor that detects the movement of the actuating component in the form of detecting displacement and / or velocity. The sensor can also be designed as a switch with two or more discrete switching positions, wherein the switching positions can be associated with different axial positions or fixed and released positions.

[0038] Preferably, the actuating component has a joystick. The end region of the joystick may extend out of the inner bore of the winding spindle (for all operating positions or only in one or more operating positions). A sensor can then detect the position and / or movement of the end region extending out of the inner bore of the winding spindle. Here, the sensor may be arranged in a region of the frame, particularly on the side of the frame away from the winding and / or on the relevant end side of the winding spindle.

[0039] Another solution to the task of the present invention is a winding machine having the winding machine fixing mechanism as described above.

[0040] Preferably, for motion control, the drive member and the front end of the winding sleeve in the pushing direction are in a form-fitting configuration. The drive member and the operating spring are configured separately. During the pushing motion, there is no relative sliding motion between the drive member and the winding sleeve.

[0041] Another solution to the objective of this invention is a method for securing a winding sleeve (preferably torsional) to a winding spindle. For this purpose, the winding sleeve moves along the winding spindle in an upward direction, preferably toward the frame. Here, the winding sleeve is pressed against the drive member by a thrust in the upward direction. This causes the drive member to move (together) in the upward direction, which is carried out under the loading of a thrust spring. If the thrust subsequently decreases or disappears, an actuating spring can induce an actuating stroke, in which the actuating spring actuates the fixing device, causing it to transition from a released position to a fixed position.

[0042] For a solution to the task substitution or accumulation of the present invention, in a method for releasing a winding sleeve on a winding spindle, the winding sleeve is first moved on the winding spindle during an upward stroke. During this movement, the winding sleeve is pressed against a drive member by a thrust in the upward direction. Due to this thrust, the drive member moves in the upward direction under the loading of an operating spring. If the thrust decreases or disappears, the operating spring causes an operating stroke, in which the operating spring actuates the fixing device, changing it from a fixed position to a released position.

[0043] Preferably, in the above method, the drive (and the winding sleeve therewith) moves in axial directions that are oriented in opposite directions during the push-up stroke and the operating stroke.

[0044] Other advantageous extensions of the invention can be derived from the claims, description and drawings.

[0045] The advantages of the features and combinations of features mentioned in the specification are merely exemplary, but can be achieved alternatively or cumulatively, and these advantages do not necessarily have to be achieved through embodiments of the present invention.

[0046] Regarding the disclosure (but not the scope of protection) of the original application documents and patents, the following applies: Further features can be derived from the accompanying drawings—especially the geometry shown, the relative dimensions between multiple components, and their relative arrangement and functional connections. Features of different embodiments of the invention or combinations of features from different claims may also deviate from the selected reference relationships of the claims and are hereby suggested. This also applies to features shown in separate drawings or mentioned in their descriptions. These features may also be combined with features in different claims. Similarly, for other embodiments of the invention, features listed in the claims may be omitted, but this does not apply to the independent claims of granted patents.

[0047] Features mentioned in the claims and description should be understood in terms of quantity as exactly that number or more than the number mentioned, without necessarily using the adverb "at least". For example, when referring to an element, it should be understood as exactly one element, two elements, or more elements. The features listed in the claims may be supplemented by other features, or may be the only features possessed by the subject matter of each claim.

[0048] The reference numerals included in the claims do not constitute a limitation on the scope of the subject matter protected by the claims. They are merely for the purpose of making the claims easier to understand. Attached Figure Description

[0049] The present invention will be further explained and illustrated below with reference to the preferred embodiments shown in the figures.

[0050] Figure 1A partial view schematically shows the area of ​​the winding machine fixing mechanism of the winding machine, wherein the winding machine fixing mechanism is in the released position and the winding sleeve is pushed onto the spindle.

[0051] Figure 2 Show Figure 1 The image shows an unfolded view of the chute unit of the winding machine fixing mechanism of the winding machine, wherein the chute body is in a first axial position in the chute.

[0052] Figure 3 Show Figure 1 The winding machine shown has a winding sleeve that, at the end of its push-up, drives the actuator under the loading of a control spring.

[0053] Figure 4 Show Figure 1 and Figure 3 The image shows an unfolded view of the chute unit of the winding machine fixing mechanism of the winding machine, wherein the chute body is in the second axial position of the chute.

[0054] Figure 5 Show Figure 1 and Figure 3 The winding machine shown has the operating spring causing the winding machine fixing mechanism to be in a fixed position.

[0055] Figure 6 Show Figure 1 , Figure 3 and Figure 5 The image shows an unfolded view of the chute unit of the winding machine fixing mechanism of the winding machine, wherein the chute body is in the third axial position of the chute.

[0056] Figure 7 Show Figure 1 , Figure 3 and Figure 5 The winding machine shown is wherein, in order to bring the winding machine fixing mechanism into the release position, the winding sleeve and the winding formed on the winding sleeve are pressed against the drive member under the loading of the operating spring, and the operating spring has caused the release position.

[0057] Figure 8 Show Figure 1 , Figure 3 , Figure 5 and Figure 7 The image shows an unfolded view of the chute unit of the winding machine fixing mechanism, wherein the chute body is in the fourth axial position of the chute.

[0058] Figure 9 Show Figure 1 , Figure 3 , Figure 5 and Figure 7The diagram shows the winding machine removing the winding sleeve and the winding wound on the winding sleeve from the winding spindle.

[0059] Figure 10 Show Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 9 The image shows an unfolded view of the chute unit of the winding machine fixing mechanism of the winding machine, wherein the chute body is in the first axial position of the chute. Detailed Implementation

[0060] In the drawings, if certain components or parts correspond or are similar in geometry and / or function, they are labeled with the same reference numerals. In this case, these components or parts can be distinguished by the additional letters a, b, ... . The component or part may be referred to with or without the additional letters, and one, several, or all of the structural elements or parts may be referred to without the additional letters.

[0061] The following will refer to Figure 1 Explain the structure of the winding machine, where the main components of the winding machine are located in... Figure 1 The bid was successful. Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 9 This shows the winding machine at different operating positions. Figure 2 , Figure 4 , Figure 6 , Figure 8 and Figure 10 The chute unit of the winding machine is shown for these different operating positions.

[0062] Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 9 A winding machine 1 is shown. The winding machine 1 has a frame 2. A winding spindle 3 is rotatably supported relative to the frame 2. The winding spindle 3 is driven by a motor in a manner not shown here for winding the material to be wound. The winding spindle 3 extends from the frame 2 in a floating support manner so that a winding sleeve 4 can be pushed onto the winding spindle 3.

[0063] In the exit region where the winding spindle 3 leaves the frame 2, the carrier 5, in this example, is movably supported on the winding spindle 3 in a limited manner along the longitudinal axis 6 via a sliding bearing, the longitudinal axis 6 corresponding to the rotation axis of the winding spindle 3. In the illustrated embodiment, the carrier 5 is designed as a carrier sleeve 7. In the end region arranged in the frame 2, the carrier sleeve 7 has a support surface 8 formed from the end side. One spring foot of the operating spring 9 is supported on the support surface 8 of the carrier sleeve 7. The other spring foot of the operating spring 9 is supported on the winding spindle 3, here by the internal bearing ring of the rolling bearing of the bearing assembly of the winding spindle 3. The other end region of the carrier sleeve 7 forms the contact surface 10 of the winding sleeve 4. In the illustrated embodiment, the contact surface 10 is designed as a contact cone 11.

[0064] Between the end regions, the drive sleeve 7 has elongated holes 12a and 12b on radially opposite sides, the elongated holes being continuous in the radial direction and parallel to the longitudinal axis 6. Radially oriented drive pins 13a and 13b are received in the elongated holes 12 and guided such that there is only one translational degree of freedom between the drive pins 13a and 13b and the drive sleeve 7 in the direction of the longitudinal axis 6 (the length of which is predetermined by the length of the elongated hole 12), while relative rotation about the longitudinal axis 6 is not possible.

[0065] The winding spindle 3 has a continuous inner bore 14. A lever 15 extends within this inner bore 14. At one end of the winding spindle 3 arranged in the frame 2, the lever 15 extends from the winding spindle 3, while at the other end, it terminates inside the winding spindle 3 (approximately at the center). The lever 15 has a transverse bore 16 in which drive pins 13a and 13b are received and secured. Drive pins 13a and 13b pass through elongated holes 17a and 17b of the winding spindle 3. The elongated holes 17 radially pass through the wall of the winding spindle 3 and extend in the direction of the longitudinal axis 6. Drive pin 13 extends through the elongated hole 17 of the winding spindle 3 into the elongated hole 12 of the drive sleeve 7. On the one hand, the drive pin 13 ensures that the drive motion (without backlash or with backlash) of the winding spindle 3 is transmitted to both the lever 15 and the drive sleeve 7. The elongated hole 17 allows the control lever 15 and the drive pin 13 (and the drive sleeve 7) to move axially relative to the winding spindle 3, wherein the movement of the control lever 15 in the axial direction can deviate from the axial movement of the drive sleeve 7, and the amount of deviation is predetermined by the elongated hole 12.

[0066] In the end region away from the frame 2, the control lever 15 has additional transverse holes 18 in which drive pins 19a and 19b are arranged. The winding spindle 3 also has elongated holes 20a and 20b in this region, which are continuous radially in the wall of the winding spindle 3 and extend along the longitudinal axis 6. Drive pins 19a and 19b pass through these elongated holes 20a and 20b. The outer end regions of the drive pins 19a and 19b are received and fixed in the holes 21a and 21b of the control sleeve 22. The control sleeve 22 forms a sliding support device 23 with the side of the winding spindle 3. The drive pins 19a and 19b ensure that the rotational movement of the winding spindle 3 is transmitted to the control lever 15 and the control sleeve 22 with no or limited clearance, and ensure that the axial movement of the control lever 15 corresponds to the axial movement of the control sleeve 22. The control lever 15, the drive pin 19, and the control sleeve 22 have axial degrees of freedom in the direction of the longitudinal axis 6.

[0067] Unlike the previous description, the rotational motion can only be transmitted through one of the elongated holes 12 and 17, so there is no double fit.

[0068] The operating sleeve 22 has a groove body 24. In the illustrated embodiment, the groove body 24 is designed as a groove pin 25. The groove pin 25 is fixed in a radial hole in the operating sleeve 22. The groove pin 25 does not protrude from the side of the operating sleeve 22 and extends radially inward from the operating sleeve 22.

[0069] The slide body 24 mates with the slide 26. In the illustrated embodiment, the slide 26 is designed as a circumferential slide 27 of the slide sleeve 28.

[0070] The grooved sleeve 28 is rotatably supported on the winding spindle 3, but has no axial degree of freedom. In the illustrated embodiment, the winding spindle 3 transitions into the support surface 30 via a shoulder 29 with a decreasing cross-section. The grooved sleeve 28 rests against the shoulder 29 on the side facing the frame 2. In the other direction, the grooved sleeve 28 rests against a retaining ring 31, which is received in a groove in the winding spindle 3. Thus, the grooved sleeve 28 is engaged between the retaining ring 31 and the shoulder 29 (especially in the case of limited clearance or transition fit).

[0071] In the region of the free end, an expansion element 32 is fixed on the winding spindle 3. The expansion element 32 has an inclined surface 33. In the illustrated embodiment, the expansion element 32 is designed as an expansion sleeve 34, wherein the inclined surface 33 is formed by a truncated cone-shaped conical surface 35.

[0072] The operating sleeve 22 protrudes slightly beyond the grooved sleeve 28 in the direction of the expansion element 32. A plurality of fixing elements 36 are distributed around the circumference of the main shaft 3 in the intermediate space between the end faces of the expansion element 32 and the operating sleeve 22; two fixing elements 36a and 36b are exemplarily shown in the figure. Here, the fixing elements 36 may be constructed in a shape approximately approximating a hollow cylindrical segment, with segment angles preferably less than 90°, less than 70°, less than 60°, less than 50°, less than 40°, or less than 30°, and / or the wall of the hollow cylindrical segment has a longitudinal section (especially as shown) that differs from a rectangular longitudinal section. The operating sleeve 22 abuts its end side against the corresponding axial end side of the fixing element 36, thereby forming an operating surface 53. In another end region, the fixing element 36 has a ramp 37, the shape of which corresponds to the ramp 33 of the expansion element 32, and particularly has the same inclination angle. By means of the spring device 38 surrounding the fixing element 36, the fixing element 36 is pressed radially inward against the side of the winding spindle 3 such that it abuts against the side of the winding spindle 3 with the contact surface 39.

[0073] Figure 2 , 4 Figures 6, 8, and 10 show the abwicklung 40 of the circumferential groove 27 of the groove sleeve 28. Here, the abwicklung 40 in the figures can represent the entire abwicklung 27 at a 360° abwicklung angle or a circumferential angle. However, it is preferred that only the abwicklung 40 of the circumferential groove 27 at an integer divisor of a 360° circumferential angle is shown in the figures. Therefore, Figure 6 Multiple identical unfoldings 40 shown can be directly adjacent in the circumferential direction. In both cases, the circumferential regions of the circumferential groove 27 can be directly and seamlessly connected to each other in the illustrated unfoldings 40.

[0074] As will be explained in detail below, the expansion element 32 and the fixing elements 36a, 36b form the fixing device 41. The slide body 24 and the slide 26 (and possibly the operating sleeve 22 and / or the slide sleeve 28) together constitute the slide unit 42. The drive pins 13, 19, the operating lever 15 and the operating sleeve 22 constitute a rigid operating member 43, which is axially movable relative to the winding spindle 3 and / or the drive sleeve 7, but can rotate with the winding spindle 3 and can twist relative to the slide sleeve 28, and can also perform axial movement relative to the slide sleeve 28.

[0075] Unlike the above description, the drive pins 13a, 13b and / or 19a, 19b may be composed of a single pin passing through the relevant transverse holes 16, 18.

[0076] The carrying component 5, the operating component 43, the slide unit 42 and the fixing device 41 constitute the winding machine fixing mechanism 44, the function of which will be described below.

[0077] As can be seen from the unfolding of the circumferential groove 40, the circumferential groove has a maximum value 45, a minimum value 46, a maximum value 47, and a minimum value 48 in terms of axial position along the longitudinal axis 6 and in the operating direction of the fixing device 41, and the groove body 24 passes through these axial positions in this order. Here, the maximum values ​​45 and 47 are preferably predetermined to be the same axial position of the groove body 24. Conversely, compared to the minimum value 48, the minimum value 46 has a smaller distance in the axial direction of the operating fixing device 41, so the minimum value 48 is an absolute minimum. Within the framework of this patent application, the minimum value 46 is referred to as the first axial position 49, the maximum value 47 is referred to as the second axial position 50, the minimum value 48 is referred to as the third axial position 51, and the maximum value 45 is referred to as the fourth axial position 52.

[0078] The following section will explain the function of the winding machine fixing mechanism 44.

[0079] exist Figure 1 and Figure 2 In the released position, the winding machine fixing mechanism 44 is in the maximum distance between the operating member 43 and the expansion element 32. This results in the maximum distance between the operating surface 53 (which is formed by the end face of the operating sleeve 22 facing the expansion element 32) and the expansion element 32. This, in turn, causes the fixing element 36 to slide radially inward along the inclined surface 33 of the expansion element 32 due to being loaded by the spring device 38, while the fixing element 36 can slide axially along the contact surface 39 and / or deflect about the contact surface 39. In the released position, the distance between the fixing section 54 and the longitudinal axis 6 is small, such that the winding sleeve 4 can pass through the fixing section 54 without contact. In this released position, the slide body 24 is held in the first axial position 49 by the operating spring 9 (if necessary, after overcoming the gap caused by the elongated hole 12) in such a way that the operating spring 9 presses the slide body 24 into the groove on the corresponding shaped boundary of the circumferential slide 27. Therefore, in the release position, the winding sleeve 4 can first be pushed without resistance onto the winding spindle 3, the slide unit and the fixing device 41 in the upward direction 55.

[0080] At the end of the push-up, the end side 56 of the winding sleeve 4 abuts against the contact surface 10 of the drive member 5. If a thrust 57 is applied to the winding sleeve 4, the drive member 5 performs a driving movement under the increased load of the operating spring 9. The movement of the drive member 5 (if necessary, after overcoming possible gaps in the elongated hole 12) is transmitted to the operating member 43 via the drive pin 13, and thus to the slide body 24. This causes the slide body 24 to move within the circumferential slide 27 from... Figure 2 The first axial position 49 shown is moved to Figure 4 In the second axial position 50 shown. Figure 3 and Figure 4The second axial position 50 is shown, which is achieved by applying a thrust 57 and can therefore also be referred to as the push-up position. In the second axial position 50, the operating position of the fixing device 41 is still the released position.

[0081] like Figure 5 and Figure 6 As shown, if the thrust 57 decreases or is eliminated, the operating spring 9 brings the winding machine fixing mechanism 44 to a fixed position. To this end, the operating spring 9 presses the carrying member 5 against the expanding element 32, thus pressing the operating member 43 against the expanding element 32. This causes the slide body 24 to move from the second axial position 50 to the third axial position 51 in the circumferential slide 27. In the third axial position, the distance between the operating surface 53 of the operating sleeve 22 and the expanding element 32 is minimal. This causes the operating force of the operating spring 9 (which is applied to the fixing element 36 by the operating surface 53) to cause the inclined surface 37 of the fixing section 54 (whose inclination angle matches the inclination angle of the inclined surface 33 of the expanding element 32) to slide upward along the inclined surface 33 of the expanding element 32, thereby increasing the distance between the fixing section 54 and the longitudinal axis 6. This movement may be accompanied by axial sliding movement in the area of ​​the contact surface 39 and / or deflection of the fixing element 36 about the contact surface 39. Figure 5 In the fixed position, the distance between the end region of the fixed section 54 and the longitudinal axis 6 is greater than the inner diameter of the winding sleeve 4. This, in turn, causes the winding sleeve 4 to be axially locked between the contact surface 10 of the carrier 5 on one hand and the inclined surface 33 of the expansion element 32 on the other hand, thereby being axially fixed. On the other hand, the fixed section 54 also applies a radially outward force to the edge region of the winding sleeve 4, thereby causing the winding sleeve 4 to be tensioned from the inside, thus ensuring further fixation or tightening.

[0082] like Figure 5 and Figure 6 As shown, in the fixed position of the winding machine fixing mechanism 44, a winding 59 will be generated on the winding sleeve 4.

[0083] If the winding sleeve 4 with winding 59 is removed from the winding spindle 3 at the end of winding, the winding machine fixing mechanism 44 must first be switched to... Figure 7 and Figure 8 In the pushed-up position shown. For this purpose, a thrust 60 is applied to the winding sleeve 4 and / or winding 59, which causes the drive member 5 to move under the load of the operating spring 9. The movement of the drive member 5 is transmitted to the operating member 43 via the drive pin 13, and thus also to the slide body 24, causing the slide body 24 to move from... Figure 6 The third axial position 51 shown is converted to Figure 8The fourth axial position 52 is shown. During this pushing motion, the distance between the operating surface 53 of the operating sleeve 22 and the expansion element 32 increases, thereby allowing the fixing element 36 to slide radially inward along the inclined surface 33 of the expansion element 32 until... Figure 7 In the release position shown, the radial distance between the fixed section 54 and the longitudinal axis 6 is again less than the inner diameter of the winding sleeve 4.

[0084] In this state, the thrust 60 is eliminated, and as the winding sleeve 4 moves in the pull-down direction 61, the winding sleeve 4 and the winding 59 arranged thereon can be pulled off from the winding spindle 3. Figure 9 Due to the elimination of thrust 60, the operating spring 9 can cause the slide body 24 to move from the circumferential slide groove 27. Figure 8 The fourth axial position 52 shown moves to Figure 10 The first axial position shown is 49.

[0085] The movement of the slide body 24 along the circumferential slide groove 27 (other than changing the axial position between the first axial position 49, the second axial position 50, the third axial position 51, the fourth axial position 52, and the first axial position 49 again) is related to the rotational movement of the slide sleeve 28 about the longitudinal axis 6, on the one hand relative to the winding spindle 3 and on the other hand relative to the operating sleeve 22, and a corresponding sliding support is provided for this purpose. Here, the amplitude of the rotational movement depends on the inclination angle or boundary slope of the circumferential slide groove 27.

[0086] As an optional feature, the end region 62 of the control lever 15 protrudes beyond the end of the winding spindle 3 mounted in the frame 2.

[0087] Here, the distance 63 by which the end region 62 protrudes from the winding spindle 3 depends on the operating position of the winding machine fixing mechanism 44:

[0088] exist Figure 1 and Figure 2 as well as Figure 9 and Figure 10 In the release position shown, i.e., the first axial position 49, the distance 63 by which the end region 62 protrudes from the winding spindle 3 is X in magnitude. In the push-up position, i.e. Figure 3 and Figure 4 as well as Figure 7 and Figure 8 In the second axial position 50 and the fourth axial position 52 shown, the distance 63 by which the end region 62 protrudes from the winding spindle 3 is Y in magnitude. Finally, in Figure 5 and Figure 6 The fixed position shown, namely the third axial position 51, has an end region 62 protruding from the winding spindle 3 by a distance 63, which is Z in magnitude. Here, Z>X>Y.

[0089] The winding sleeve 4 is fixed on the winding spindle 3 by the winding machine fixing mechanism 44 by means of a push-up stroke and an operating stroke. During the push-up stroke, a thrust 57 is applied to the winding sleeve 4 and the winding sleeve 4 moves toward the drive member 5. During the operating stroke (when the thrust 57 is removed), the opposite movement is caused by the operating spring 9, and the fixing device 41 changes from the released position to the fixed position.

[0090] To move the winding machine fixing mechanism 44 from the fixed position to the release position in order to remove the winding sleeve 4 with the winding 59 from the winding spindle 3, a push-up stroke and an operating stroke following the release of the thrust 60 are required. In the push-up stroke, a thrust 60 is applied to the winding sleeve 4 and / or the winding 59, and the winding sleeve 4 moves toward the drive member 5. In the operating stroke, the fixing device 41 is moved to the release position by the operating spring 9.

[0091] Therefore, the winding machine fixing mechanism 44 is switched to the fixed position and the winding machine fixing mechanism 44 is manipulated to the release position by the operating spring 9, wherein the different directions of action of the operating spring 9 relative to the winding machine fixing mechanism 44 are predetermined by the design of the circumferential slide 27.

[0092] Different distances 63 can be detected by sensor 64, which can detect the distance or speed of the end region 62. The sensor can detect the distance 63 continuously, stepwise, or digitally. The sensor 64 can also be a switch with at least two switching positions, by switching the switch to achieve the predetermined distance 63, especially the distances X, Y, and Z.

[0093] like Figure 1 As shown, the carrier 5 of the winding spindle 3 extends from the frame 2 through the opening 65. The intermediate space between the winding spindle 3 and the carrier 5, as well as the boundary of the opening 65, can be closed by a cover or seal 66. The cover or seal 66 prevents contaminant particles from entering the frame 2 and the internal space containing the support device for the winding spindle 3. Furthermore, it prevents the operating mechanism or the operator's fingers from entering the intermediate space. In its simplest form, the cover or seal 66 can be constructed as a plate, and if necessary, has a gap seal or labyrinth seal that seals against the sides of the carrier 5. The cover or seal 66 is preferably located between the widened end regions of the carrier 5, serving to provide a support surface 8 on one hand and a contact surface 10 on the other. In this case, the cover or seal 66 can be constructed separately.

[0094] By receiving the drive pin 13 in the elongated hole 12 of the drive sleeve 7, a limited degree of freedom or clearance is ensured, which can be used to compensate for length differences in the winding sleeve 4. For example, such length differences may be due to manufacturing tolerances or wear.

[0095] List of reference numerals in the attached diagram:

[0096] 1. Winding machine

[0097] 2 racks

[0098] 3. Winding spindle

[0099] 4. Winding sleeve

[0100] 5. Carrying parts

[0101] 6. The longitudinal axis of the winding spindle

[0102] 7 Carrying Sleeve

[0103] 8 Support surface

[0104] 9. Control spring

[0105] 10. Stick to the side

[0106] 11. Adhesive cone

[0107] 12. Elongated hole of the carrying sleeve

[0108] 13. Carry out sales

[0109] 14. Inner hole of the winding spindle

[0110] 15 joysticks

[0111] 16 horizontal holes

[0112] 17. Elongated hole for winding spindle

[0113] 18 horizontal holes

[0114] 19. Carry out sales

[0115] 20 elongated holes

[0116] 21 holes

[0117] 22 Operating Sleeve

[0118] 23 Sliding support device

[0119] 24 Slide body

[0120] 25 Sliding pin

[0121] 26 Slides

[0122] 27 Circumferential groove

[0123] 28 Sliding sleeve

[0124] 29 shoulder

[0125] 30 Support surface

[0126] 31 Snap ring

[0127] 32 Expansion Element

[0128] 33 bevel

[0129] 34 Expansion sleeve

[0130] 35 cone surface

[0131] 36 Fixing elements

[0132] 37 bevel

[0133] 38 Spring device

[0134] 39 Contact surface

[0135] 40 Expand

[0136] 41 Fixing device

[0137] 42 Slide Unit

[0138] 43 Control components

[0139] 44 Winding machine fixing mechanism

[0140] 45 Maximum value

[0141] 46 Minimum value

[0142] 47 Maximum value

[0143] 48 Minimum value

[0144] 49 First Axial Position

[0145] 50 Second axial position

[0146] 51 Third Axial Position

[0147] 52. Fourth Axial Position

[0148] 53 Control surfaces

[0149] 54 Fixed Sections

[0150] 55 Push Up Direction

[0151] 56 end side

[0152] 57 Thrust

[0153] 59 windings

[0154] 60 thrust

[0155] 61 Pull down the direction

[0156] 62 End region

[0157] 63 Distance

[0158] 64 sensors

[0159] 65 Opening

[0160] 66. Covers or seals.

Claims

1. A winding machine fixing mechanism (44) for fixing a winding sleeve (4) on a winding spindle (3), wherein a) the winding machine fixing mechanism (44) is movable by means of a movement control aa) from a release position into a fixing position, and / or ab) from the fixing position into the release position, b) the fixing of the winding sleeve (4) on the winding spindle (3) takes place by means of a fixing device (41), and c) in the movement control, a driver (5) which causes the movement of the winding machine fixing mechanism (44) is entrained by the movement of the winding sleeve (4), the fixing device (41) has at least one expansion element (32) and at least one fixing element (36), and the expansion element (32) and the fixing element (36) are pressed against one another by means of at least one ramp (33, 37), and the movement of the driver (5) causes a relative movement between the expansion element (32) and the fixing element (36) which is guided by means of the ramp (33, 37), the distance between the fixing element (36) and the longitudinal axis (6) of the winding spindle (3) is changed by means of the relative movement, characterized in that d) the fixing element (36) has a fixing section (54) which, after the winding sleeve (4) has been pushed on, is arranged behind the winding sleeve (4) in the direction of the push-on, wherein the fixing section (54) is arranged radially outside the inner diameter of the winding sleeve (4) and forms an axial stop for the winding sleeve (4) which prevents the winding sleeve (4) from being pulled off the winding spindle (3). In the fixing position, a) one end region of the winding sleeve (4) is supported on the driver (5) in one axial direction, and b) the other end region of the winding sleeve (4) is supported on the fixing device (41) in the other axial direction. The fixing device (41) has a plurality of fixing elements (36a, 36b) which are arranged distributed over the circumference of the winding spindle (3), are pressed radially inwards on the side of the winding spindle (3) by means of spring means (38) and have a ramp (37) in one end region which interacts with an expansion element (32). The driver (5) is supported by means of an actuating spring (9) which is loaded and actuates the fixing device (41) by means of a push force (57, 60) which is exerted on the driver (5) by the winding sleeve (4) with the movement of the winding sleeve (4) in the direction of the push-on (55). A chute unit (42) is arranged in the force flow between the driver (5) and the fixing device (41). A chute unit (42) is arranged in the force flow between the driver (5) and the fixing device (41).

2. The winding machine securing mechanism (44) according to claim 1, characterized in that, The chute unit has a ballpoint pen chute. The chute unit has a ballpoint pen chute. ​ 3. The winding machine securing mechanism (44) according to claim 1, characterized in that, ​ 4. The winder securing mechanism (44) according to claim 1, characterized in that, ​ 5. The winder securing mechanism (44) of claim 1, characterized in that, ​ 6. The winding machine securing mechanism (44) according to claim 4, characterized in that, ​ 7. The winding machine securing mechanism (44) according to claim 5, characterized in that, ​ 8. The winding machine securing mechanism (44) according to claim 6, characterized in that ​ 9. The winding machine securing mechanism (44) according to claim 5, characterized in that, The chute unit (42) has a chute (26) and a chute body (24) which moves along the chute (26), wherein the chute unit (42) - a first axial position (49) of the chute body (24) is predefined, in which the fixing device (41) is in a release position and in which the winding sleeve (4) can be moved onto and from the winding spindle (3), - a second axial position (50) of the chute body (24) is predefined, in which the drive element (5) is driven by the winding sleeve (4), - a third axial position (51) of the chute body (24) is predefined, in which the fixing device (41) is in a fixing position, and - a fourth axial position (52) of the chute body (24) is predefined, in which the drive element (5) is driven by the winding sleeve (4).

10. The winder securing mechanism (44) according to claim 6, characterized in that, The chute unit (42) has a chute (26) and a chute body (24) which moves along the chute (26), wherein the chute unit (42) - a first axial position (49) of the chute body (24) is predefined, in which the fixing device (41) is in a release position and in which the winding sleeve (4) can be moved onto and from the winding spindle (3), - a second axial position (50) of the chute body (24) is predefined, in which the drive element (5) is driven by the winding sleeve (4), - a third axial position (51) of the chute body (24) is predefined, in which the fixing device (41) is in a fixing position, and - a fourth axial position (52) of the chute body (24) is predefined, in which the drive element (5) is driven by the winding sleeve (4).

11. The winding machine fixing mechanism (44) according to claim 10, characterized in that the movement from the first axial position (49) to the second axial position (50) and from the third axial position (51) to the fourth axial position (52) is caused by a movement of the winding sleeve (4) in a push-on direction (55), and the movement from the second axial position (50) to the third axial position (51) and from the fourth axial position (52) to the first axial position (49) is caused by the actuating spring (9).

12. The winding machine fixing mechanism (44) according to claim 11, characterized in that in the first and third axial positions (49, 51) the distance between the drive element (5) and the expansion element (32) is greater than in the second and fourth axial positions (50, 52).

13. The winding machine fixing mechanism (44) according to claim 12, characterized in that the chute (26) is a circumferential chute (27) and a rotation of the circumferential chute (27) takes place during the movement between the axial positions.

14. The winder securing mechanism (44) according to claim 6, characterized in that, The driver (5) is coupled with the slide unit (42) and / or the fixing device (41) by means of a handling member (43), and a sensor (64) detects the position and / or movement of the handling member (43).

15. The winding machine securing mechanism (44) according to claim 14, characterized in that, The handling member (43) has a handling lever (15) with an end region (62) which extends at least temporarily out of the bore (14) of the winding spindle (3), wherein the sensor (64) detects the position and / or movement of the end region extending out of the bore (14) of the winding spindle (3).

16. The winder securing mechanism of claim 1, wherein, The driver is coupled with the fixing device by means of a rigid handling member, which handling member comprises a driver pin, a handling lever and a handling sleeve, the handling member being axially movable relative to the winding spindle but rotating with the winding spindle, the winding spindle having a bore, and the handling lever extending inside the bore.

17. Winding machine fixing mechanism according to claim 1, characterized in that a) a plurality of fixing elements are provided, b) an end face of the handling sleeve contacts a corresponding axial end face of the fixing elements, such that the end face of the handling sleeve forms a handling face, and c) a spring device surrounds the fixing elements, which spring device presses the fixing elements radially inwards against the side face of the winding spindle, such that the fixing elements contact the side face of the winding spindle.

18. The winder securing mechanism of claim 1, wherein, In the fixing position of the winding machine fixing mechanism, the winding sleeve is axially clamped between the driver and the fixing elements.

19. Winding machine fixing mechanism according to claim 1, characterized in that a) in the fixing position, one end region of the winding sleeve is supported on the driver in one axial direction, b) in the fixing position, the other end region of the winding sleeve is supported on the fixing device in the other axial direction, c) the fixing device comprises a plurality of fixing elements arranged distributed over the circumference of the winding spindle, and d) the expansion element has a first ramp, the fixing elements have fixing sections with second ramps which are configured to correspond to the first ramp of the expansion element, the first and second ramps have the same angle of inclination, and the first and second ramps slide into one another during switching between the fixing position and the release position.

20. The winder securing mechanism of claim 19, wherein, The fixing sections are clamped between the end regions of the winding sleeve and the expansion element.

21. Winding machine (1) with a winding machine fixing mechanism (44) according to one of the preceding claims 1 to 20.

22. A method for fixing and / or releasing a winding sleeve (4) on a winding spindle (3) of a winding machine (1) according to claim 21, characterized in that The following method steps: a) fixing the winding sleeve (4) on the winding spindle (3) by aa) moving the winding sleeve (4) on the winding spindle (3) in a push-on stroke, wherein the winding sleeve (4) is pressed by a pushing force (57) in a push-on direction (55) against the driver (5), so that the driver (5) is moved in the push-on direction (55) under loading of a handling spring (9), and bb) moving the winding sleeve (4) on the winding spindle (3) in a push-off stroke, wherein the winding sleeve (4) is pressed by a pushing force (57) in a push-off direction (55) against the fixing device (41), so that the fixing device (41) is moved in the push-off direction (55) under loading of a handling spring (9). ab) reducing or eliminating the pushing force (57) such that the handling spring (9) causes a handling stroke in which the handling spring (9) converts the fixing means (41) from the release position into the fixing position, and / or b) releasing the winding sleeve (4) from the winding spindle (3) by ba) moving the winding sleeve (4) on the winding spindle (3) in a push-on stroke, wherein the winding sleeve (4) is pressed against the driver (5) by a pushing force (60) in a push-on direction (55) such that the driver (5) is moved in the push-on direction (55) under the load of the handling spring (9), and bb) reducing or eliminating the pushing force (60) such that the handling spring (9) causes a handling stroke in which the handling spring (9) converts the fixing means (41) from the fixing position into the release position.

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