TENSIONING DEVICE AND SPINNING MACHINE
A tensioning device for a spinning unit and/or stretching device. The tensioning device includes at least one roller, at least one belt, and at least one tension rod. The tensioning device can be transferred from a functional state into a non-functional state. The functional state is designed for positioning position the at least one roller in that the belt is designed and arranged for exerting a tension on the roller, in that the belt is further designed and arranged for running around a section of the roller and a section of the tension rod such that a tension is transferred from the tension rod onto the roller via the belt. In the non-functional state, the tensioning device is designed and configured such as to move the tension rod via tension on the belt, for removing the belt from the tension rod.
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The present invention relates to a tensioning device having at least one roller, at least one belt, in particular a running belt, and at least one tension rod, wherein the tensioning device is designed and configured such as to be transferred from a functional state into a non-functional state. The invention further relates to a spinning unit having a tensioning device according to the invention. The invention further relates to a spinning machine having a spinning unit according to the invention and/or having a tensioning device according to the invention.
In the textile industry, a tensioning device is known, for example from EP 2-573-230 B1, in which a tensioning device has a plurality of roller pairs, such as a rear roller pair, a middle roller pair, and a front roller pair. The rollers are arranged in this order along a fiber bundle guide in an stretching direction of the fiber bundle. The tensioning device has a first support portion which is configured to rotatably support a front bottom roller, further has a second support portion which is designed to rotatably support a middle bottom roller, further has a tension rod which is designed to regulate a tension and position of a running belt which is placed around the middle bottom roller, wherein a third support portion, which is arranged on at least one of the first support portion and the second support portion and protrudes therefrom and is designed to support the tension rod, wherein the third support portion is designed to support the tension rod by being inserted into a recess formed in the tension rod.
The running belt is subject to wear and, for this reason, has to be changed after a certain time. According to the prior art, changing the running belt is connected to a pause of the runtime of a spinning machine. The standstill of the spinning machine is thus associated with costs.
Starting from the aforementioned prior art, it is an object of the invention to improve and simplify the changing of the belt, to accelerate the changing as much as possible and thus to reduce the costs of changing the belt.
The object is achieved by a tensioning device having the features of claim 1. The object is further achieved by a spinning unit having the features of claim 15. The object is further achieved by a spinning machine having the features of claim 16.
Advantageous embodiments of the invention are the subject matter of the dependent claims.
According to one aspect, the object is achieved by a tensioning device having the features of claim 1.
The tensioning device is provided for positioning at least one roller of a spinning unit and/or stretching device and is correspondingly configured and designed. It has the at least one roller, at least one belt, in particular a running belt, and at least one tension rod. The tensioning device is designed and configured such that it is transferred from a functional state into a non-functional state.
The functional state is designed for positioning the at least one roller in that the belt, in particular, the running belt, is designed and arranged for exerting a tension on the roller, in that the belt, in particular, the running belt, is further designed and arranged to run around a section of the roller and a section of the tension rod such that a tension is transferred from the tension rod onto the roller via the belt, in particular, the running belt.
The non-functional state is designed, wherein the tensioning device is designed and configured such as to move the tension rod by tension on the belt, in particular the running belt. The movement is provided and accordingly configured for enabling a removal of the belt, in particular a running belt, from the tension rod.
As a result, the belt can be pulled off and thus replaced without disassembly of the spinning device and, in particular, also without having to dismantle and/or remove the tension rod.
The movement of the tension rod is caused by the tension on the belt, since the tension rod is designed and arranged such that it becomes movable when transitioned into a non-functional state. The belt is thus contracted according to its inherent elasticity and, in this respect, assumes a state which, in material terms, it is more relaxed than the state in which the belt transmits tension from the tension rod to the roller. By assuming the relaxed state, the belt can also be pulled more easily off the tension rod, whereby time can be saved during removal. In other words, changing the belt is thereby faster since, on the one hand, it assumes a relaxed state and can thus be moved more easily, and because, on the other hand, the relaxation of the belt itself ensures that the tension rod transitions into a configuration which facilitates pulling off of the belt.
The tension rod may be arranged on a base body. The main body itself may be designed such that the at least one roller can be mounted in a rotatable manner. A support may be designed in one or two parts. In particular, it may thus be provided that a lower part is designed to hold a rotatable part of a roller guide. A corresponding upper part may be formed which can be mounted on the lower part such that the roller guide is rotatably mounted in the two concave, in particular, cylindrical cavities of the upper and lower parts. The roller can thereby rotate.
The roller can, in particular, be an actively driven roller, in particular, a bottom roller. Since the belt contacts the roller in a section when it is under tension, the belt can also be moved via the roller, which is why the belt can be a running belt. In a functional state, the running belt can run around the at least one roller in the section in which it contacts the roller. In the functional state, the belt can also run around the tension rod in the section where it contacts the tension rod.
The functional state is, in particular, the state which is provided and correspondingly designed to spin a yarn. For this purpose, a fiber bundle is, in particular, stretched in a stretching device by being passed through a series of roller pairs. In particular, at least three roller pairs may be arranged, which are successively traversed by the fiber bundle. A belt can be wound about the (middle) bottom roller, as described in detail, or accordingly about a (middle) top roller in a section.
Tension and position of the belt (a position in a direction parallel to a stretching direction, in other words, a stretching position in the stretching direction, and a position in a direction perpendicular to the stretching direction, in other words, a longitudinal position in the longitudinal direction) are regulated, in particular, by the tension rod. Thus, an assembly state of the tension rod influences the tension and the position of the belt. If the tension and the position of the belt change, a stretching state of a fiber bundle, which passes between the top and bottom rollers in the functional state, changes. This can cause, for example, a thickness irregularity to occurs in the fiber bundle being stretched by a stretching device influencing the quality of the fiber bundle. The belt may also be called an apron.
The tension rod may be provided and designed such as to regulate the tension and position of the belt, which, as described in detail, runs around the at least one roller, in particular, in the form of a (middle) bottom roller, in a section and contacts it and sets it under tension. While a tension rod is mentioned here, it does not necessarily have to have a cylindrical shape. It also does not have to have a round or oval (partial) cross-section. Rather, the tension rod may also be a cuboid structure, which is also, in particular, provided with belt contact regions and belt contact edges. The tension rod can therefore also be referred to as a bridge or tension rail.
The belt contact region and/or the belt contact edge may be arranged and designed such that the belt runs around the tension rod as gently as possible, even if tension is exerted on the belt and said belt slides over the tension rod as a running belt.
In other words, tension can also be a (material) tension which is introduced into the belt by moving the tension rod away, relative to the at least one roller. In other words, it can thus also be said that the belt is tensioned.
Between the at least one roller, which is put under tension by the belt, and another roller, in particular, in the form of a corresponding top roller, there may be a clearance for movement. It may be provided that this clearance is tightened accordingly by the tension of the belt, corresponding to the tension transferred onto the belt by means of the tension rod. In other words, this means the tension can provide fine positioning of the at least one roller with respect to at least one other roller by means of a tension rod to adjust the quality of the fiber bundle during stretching.
A non-functional state is, in particular, a state in which no fiber bundle can run through the arrangement of the roller pairs (also known as pairs of rollers). In particular, a non-functional state is a state which allows the belt to be removed from the tension rod and/or from the roller, in particular, to exchange it. In other words, a non-functional state can thus also be understood to mean a repair state and/or a belt change state.
It may be provided that the transfer from the functional state to the non-functional state is reversible. As a result, the belt can be changed easily, and a simple return transfer into the functional state after the strand exchange is also possible.
It may be provided that the tensioning device has at least one fastening device which is designed and arranged such as to connect the tension rod to a main body. A loosening of the at least one fastening device can transfer the tensioning device from the functional state into the non-functional state. The fastening device may be a screw with a corresponding thread (in a main body). The screw can be loosened, in particular, by two screw revolutions, whereby the tension rod is movably released. As a result, it is possible that by means of an easy-to-perform manual operation, a corresponding loosening of the tension rod is possible, which also enables a transfer between a functional state and a non-functional state.
It may be provided that the transfer from the functional state into the non-functional state takes place, in particular, independently, following the tension of the belt, without the user having to intervene separately. In other words, this means, in particular, that, for the change from a functional state into a non-functional state, solely the loosening of the fastening device, in particular, of the screw, is sufficient to transfer the belt from a tensioned state to a relaxed state, wherein this relaxation can effect a movement of the tension rod.
At least one locking device may be provided which is designed and arranged such as to lock the tension rod in at least one direction in the functional state. In addition, said at least one locking device is further designed and arranged such as to moveably release the tension rod in at least one direction in the non-functional state for moving the tension rod via the tension the running belt. This allows the described mobility in a functional state to be limited, but the mobility for the non-functional state can be recovered (in the sense of restored). The mobility can thereby not only be recovered, but the movement thereof is initiated via the tension of the belt on the tension rod.
The locking device may protrude integrally from the tension rod. Alternatively, the locking device may protrude integrally from the main body. In other words, this means that the locking device and the tension rod may be formed in one piece. Alternatively, the locking device and the main body may be formed in one piece. It may further be provided that, in the functional state the at least one locking device locks the tension rod in a corresponding receiving region in the main body or in the tension rod. Mixed types may also be provided, wherein one part of the locking device is provided in the tension rod and one part of the locking device in the main body. The same applies to the corresponding receiving regions.
It may be provided that the at least one locking device is fixedly arranged in a socket on the tension rod. In this case, the at least one locking device locks the tension rod in a corresponding receiving region in the main body in the functional state. The socket may, in particular, be a press-in seat which allows a pin to be pressed in such that it can no longer be removed. The friction of the pin on the outer walls and the pressure by the press-in seat on the latter is, in particular, so high that removal of the pin could lead to damage to it. A locking can thus be implemented in a simple manner.
Alternatively, it may be provided that the at least one locking device is fixedly arranged in a socket on the base body, wherein, in the functional state, the at least one locking device locks the tension rod in a corresponding receiving region in the tension rod. This socket may in particular be a press-in seat as defined above. A locking can thus be implemented in a simple manner.
It may be provided that the at least one corresponding receiving region is designed and arranged such that a maximum play for the locking device in the corresponding receiving region in at least one direction is determined for moving the locking device in the receiving region in the at least one direction for a transfer into the non-functional state. As a result, the tensioning device can be transferred from the functional state into the non-functional state.
The at least one corresponding receiving region may be designed and arranged such as to receive the locking device in the functional state for specifying a maximum play. The receiving can in particular take place in a contactless manner in one direction such that a maximum play is provided in this direction. In this case, the maximum play is, in particular, provided such as to move the locking device in the receiving region for transferring into the non-functional state. The movement that the tension rod performs due to the transfer into the non-functional state can thereby be limited. As described above, the belt can move the tension rod via the tension when the tension rod is loosened, for example, from a main body supporting it. The play of the locking device can set a limit of this movement to prevent the structure from completely falling apart. In other words, this means that the tension rod cannot fall down from the main body supporting it, because the play which is set by the at least one locking device is limited.
Alternatively, it may be provided that, in the functional state, the at least one corresponding receiving region is designed and arranged such as to contact the locking device with a region. This allows locking. A play is provided here such as to lose contact with the region during the transfer into the non-functional state by moving the tension rod or such as to contact a different region during the transfer into the non-functional state. The movement that the tension rod performs due to the transfer into the non-functional state can thereby be limited. As described above, the belt can move the tension rod via the tension when the tension rod is loosened, for example, from a main body supporting it. The play of the locking device can set a limit of this movement to prevent the structure from completely falling apart. In other words, this means that the tension rod cannot fall down from the main body supporting it, because the play which is set by the at least one locking device is limited.
It may be provided that the at least one locking device is a longitudinal positioning pin, in particular, a longitudinal positioning cylinder pin. In particular, a longitudinal position is thereby locked and determined.
It may be provided that the movement of the tension rod is a tilting about a first axis. In particular, the longitudinal position of the tension rod is thereby held, but the tilting allows the belt to be relieved in order to be able to pull it off the tension rod.
Alternatively or additionally, it may be provided that the movement of the tension rod is a rotation about a second axis. The stretching position and the longitudinal position are thus held at least at one point (rotation point and/or rotation tilting point). This allows the belt to be relaxed so that it can be pulled off the tension rod.
At least one movement guide device may be provided which is designed and arranged for guiding the movement of the tension rod during the transfer into the non-functional state. The at least one movement guide device may, in particular, be designed such that it has one of a tilting point, a rotation point and/or a rotation tilting point. Said point does not have to be a mechanically fixed connection, such as a joint, but may also be by contacting the tension rod when moving the tension rod into the non-functional state.
Furthermore, it may be provided that the at least one movement guide device interacts with the at least one locking device such that, during the transfer into the functional state, the tension rod comes into a position, in which it assumes the final intended position for fastening it in this position to a main body supporting it. A simple return of the tension rod into the functional state is thus possible, which is improves and simplifies a positioning and thus simplifies a belt exchange and further shortens the time required for a transfer into the functional state.
Furthermore, it may be provided that the at least one movement guide device interacts with the at least one locking device such that the tension rod comes into an intended position during the transfer into the non-functional state. Said intended position can enable a particularly simple removal of the belt. In particular, it may be provided that the movement guide device guides the transition movement of the tension rod from the functional state into the non-functional state, but it also sets a limit to said transition movement in a first direction. In particular, the locking device allows the transition movement, but limits the movement to force a transition into the intended position.
It may be provided that the at least one movement guide device is a position pin which is arranged, in particular, in a socket of the main body. Alternatively, the position pin may also be integrally formed from the base body. The position pin may be arranged and designed such as to be received in a receptacle in the tension rod. The receptacle may be such that the tension rod moves relative to the position pin in a play of the receptacle during the transfer into the non-functional state. A transfer can thus be made possible, wherein the movement guide device guides the movement. The play of the receptacle can thereby allow movement guidance to be possible.
The position pin may in particular be a position cylinder pin, which thus has a cylindrical shape. Alternatively, it may also be cuboid. The socket may, in particular, be a press-in seat.
It may further be provided that the receptacle of the at least one movement guide device is arranged in the tension rod, while the receptacle of the at least one locking device is associated with a main body. In other words, this means that the respective receptacles are associated with different functional units. This allows them to work together and coordinate the transfer movement.
It may be provided that the main body is a bottom roller support. Thus the tension rod may be associated with a bottom roller, in particular, a middle bottom roller. This association allows the belt to be placed around the bottom roller, in particular, in the form of a middle bottom roller.
It may be provided that the base body is designed in one piece. In this case, it may also be provided that the main body also supports the bottom roller and also has an integral fastening region for fastening the tension rod.
It may be provided that, in the functional state, the tension rod is designed and arranged to protrude with the section of the tension rod around which the running belt runs in the functional state. The tension rod is thus arranged such that, in the non-functional state, the belt can be pulled off the tension rod and off the at least one roller. An easy exchange of the belt is thereby possible.
A belt guide device may be provided which has at least one of a guide pin, a contact surface, and/or a contact edge. The guide pin may limit a longitudinal position of the belt into which the belt can move. The contact surface may be designed in the tension rod such that the belt comes into contact with the tension rod only in the region of the contact surface. In this way, the friction of the belt is reduced when it runs around the tension rod, which reduces the wear of the belt and thus extends the service life of the belt.
Multiple contact surfaces may also be provided, with the belt not contacting intermediate regions of the surface of the tension rod. The contact edge can be designed such as to deflect the belt as it runs around the tension rod. The contact surface is thereby reduced and the belt is protected, which extends the service life.
It may be provided that the one roller is one of a front bottom roller, a middle bottom roller and/or a third bottom roller of a spinning unit. The tensioning device described in detail can thus be transferred to the rollers of a spinning unit.
According to an independent aspect, the object can be achieved, in particular, by a stretching device which has at least one tensioning device, as described in detail. The stretching device can thus be described and characterized accordingly by the features, functions and advantages of the tensioning device. The statements made above thus also apply accordingly to a stretching device according to the invention. The stretching device thereby forms a subunit of a spinning unit, which is why the stretching device is also described and characterized accordingly by the features, functions and advantages of the spinning unit. The statements made below also apply accordingly to a stretching device according to the invention.
According to an independent aspect, the object is achieved in particular by a spinning unit which comprises a tensioning device according to the invention. The spinning unit can thus be described and characterized accordingly by the features, functions and advantages of the tensioning device and/or stretching device. The statements made above thus also apply accordingly to a spinning unit according to the invention. The spinning unit represents a subassembly of a spinning machine, which is why the spinning unit can also be described and characterized accordingly by the features, functions and advantages of the spinning machine. The statements made below also apply accordingly to a spinning unit according to the invention.
A spinning unit may have a series of roller pairs, wherein one top roller and one bottom roller each interact such that a fiber bundle is fed through the roller pair. Multiple of these roller pairs is arranged. For example, a rear, middle and front roller pair can be arranged and designed such as to form a stretching device. The rotational speed of the rollers can increase from the rear roller pairs in the direction of the front roller pairs. The bottom roller pairs are active roller pairs, i.e., are driven by a motor. The top roller pairs are passive rollers, so-called following rollers, i.e., rollers that follow the movement of the bottom rollers by being frictionally connected to them. In particular, as passive rollers, the top rollers are not actively driven.
The fiber bundle is fed along the fiber bundle feed in a so-called stretching direction to the stretching device and fed through it. The fiber bundle is stretched for spinning it. The spinning unit is also associated with a spinning subunit which takes over the spinning after the fiber bundle has been stretched and thus prepared for spinning. In other words, it can be said that the spinning unit comprises a stretching device and a spinning subunit, wherein the tensioning device can be associated with the stretching device.
The tensioning device according to the invention can thereby be associated with one of the rollers, in particular a bottom roller, more particularly, a middle bottom roller. The main body can be the bottom roller support, which is designed, in particular, in one piece.
According to an independent aspect, the object is achieved, in particular, by a spinning machine comprising a spinning unit according to the invention and/or comprising a tensioning device according to the invention. The spinning machine can thus be characterized and described according to the features, functions and advantages of the spinning unit, which in turn can be described and characterized according to the features, functions and advantages of the tensioning device. The statements made above thus also apply accordingly to a spinning machine according to the invention.
In summary and in other words, the invention thus, in particular, results in a tensioning device which is used in a spinning unit, in particular, in a subunit of the spinning unit, the so-called stretching device. The spinning unit is used, in particular, in a spinning machine which is designed for spinning a yarn, starting from a fiber bundle. A simplified bridge positioning is proposed for easily changing the belt. The tension rod may also be referred to as a bridge, while the running belt may also be referred to as an apron.
In a textile machine of today's design, the bridge is pinned and thus positioned, in particular, via conventional cylindrical pins. The bridge is then tightened or loosened using a screw. The cylindrical pins are, in particular, pressed into the one-piece bottom roller support, in the form of the main body. The pin bores are located in the bridge. Current positioning of the bridge is made possible via conventional cylindrical pins. However, this type of positioning of the bridge makes it difficult to change the apron. The disadvantage is that the bridge is not movable when the screw is loosened. It is held rigidly in position by the cylindrical pins projecting from the bottom roller support. Thus the apron cannot be removed from the bridge. The bridge has to be dismantled for an apron change.
According to the detailed description of how the object is achieved, the following configuration may be provided. The cylindrical pins, as a locking device, can be pressed into the bridge and provided for the longitudinal positioning. The associated longitudinal grooves, the corresponding receptacles, are located in the bottom roller support. For the position, in particular, the cylinder pin pressed into the bottom roller support is provided, which is positioned in the bridge in an elongated hole as a corresponding receptacle. The invention allows enormous time-optimized disassembly of the apron. By loosening the screw, in particular, with two revolutions, the bridge can be tilted in the load direction towards the apron via the position cylinder pin, thereby reducing the tensioning force of the apron. As a result, the apron can be pulled very easily from the bridge. If the apron is worn, it is necessary to remove the apron for the apron exchange.
In the following, exemplary embodiments of the invention are described in more detail with reference to figures, showing schematically and by way of example:
The same reference signs are used for elements and structures having the same effect and/or are of the same type.
A stretching device 100 represents a part of a spinning machine which comprises a plurality of roller pairs, of which only the two bottom rollers of a front bottom roller 8 and a middle bottom roller 6 are shown here. A corresponding top roller is associated with these, which are not shown here for reasons of clarity. A rear roller pair is also not shown for reasons of clarity. It may be provided that a fiber bundle (not shown) is fed in a stretching direction A from a rear roller pair via the middle roller pair to the front roller pair. The bottom rollers are driven, as illustrated here by the motors 7 of the front bottom roller 8 and the middle bottom roller 6. In the case of the front bottom roller 8, the force of the motor 7 is transferred to a shaft 3. The top rollers are passive rollers which only follow the movement of the corresponding bottom rollers. The bottom rollers are rotatably mounted in a bottom roller support 16 as a base body. In particular, each roller can be associated with a one-piece bottom roller support 16. The bottom roller support 16 is arranged on a base 17.
Furthermore, a roller support portion 5 may be provided in which the previously described rotatable mounting takes place. The roller support portion 5 may be assembled from an upper part 5A and a lower part 5B to be able to easily exchange the roller.
During operation, the roller pairs rotate, in particular, with increasing speed from the rear roller pair to the front roller pair. This stretches the fiber bundle for carrying out a spinning process in the spinning subunit (not shown). Stretching device 100 and spinning subunit together form a spinning unit 200. The stretching device 100 thus represents a subunit of the spinning unit 200.
In order to stretch the fiber bundle evenly, a belt 1 is provided here, which contacts the middle bottom roller 6 in a section 30 and thus partially runs around it. In the process, the belt 1 also runs around a tension rod 4, also referred to as a bridge, and makes contact with this tension rod 4 only in a section 31, more precisely only at the locations of a guide surface 29 and at a guide edge 28 on which it is deflected.
The belt 1 is here a running belt which, in an active functional state, runs around the bottom roller 6 and the tension rod 4. The middle bottom roller 6 can be positioned relative to the front bottom roller 8 and also relative to the corresponding top roller (not shown). By positioning the tension rod 4, a (pulling) tension is transferred to the belt 1. Depending on this tension, the middle bottom roller 6 is precisely positioned (fine positioning) and also the running properties of the belt 1 are determined. Both of these together are important for the stretching properties of the stretching device 100, as explained elsewhere. Due to the belt 1 touching the tension rod 4 and sliding past it, the belt 1 is subjected to aging. For this reason, the belt must be changed from time to time to avoid tearing of the belt 1, since this could damage the machine. The belt change is explained in the prior art with reference to
A lateral belt guide pin 34 may also be provided, which prevents the belt 1 from dragging on bottom roller support 16. This lateral belt guide pin 34 is arranged in a press-in seat 35 and terminates planar with the contact area for the tension rod 4 of the base body. A socket 19 for a first lateral belt guide (not shown) is also provided in the tension rod 4. Said lateral belt guide prevents the belt 1 from sliding off the tension rod 4. The lateral belt guides may be designed as lateral belt guide pins 34. Here, the belt 1 is held by the tension rod 4. For a belt change, the tension rod 4 has to be dismantled, as shown in
To show additional details,
The tension rod 4 can be removed from the receiving area 36 after loosening the screw 11 and the accompanying removal from the screw receiving area 9 accompanied by removal from the thread 12. This makes it possible for the tension onto the belt 1 to be loosened, which enables the removal of the belt 1 from the tension rod 4 and from the bottom roller 6. A new belt 1 is then installed and the tension rod 4 has to be mounted again. As a result, the belt 1 is tensioned again.
The bottom roller support portion 5B is shown which has bores 18 for enabling a connection to the upper part of the roller support portion 5A.
The position cylinder pin 21 is arranged and designed for forming a contact with a corresponding receptacle 23 in the tension rod, which contact can coordinate a movement when the screw 11 is loosened. However, said screw does not have to be removed. Rather, it suffices to loosen said screw such that the two longitudinal positioning cylinder pins 13 come out of the corresponding receptacles 24, which are arranged in the main body 16, for example, by lifting the tension rod 4. As a result, a tilting movement 27 and/or rotational movement 32 about the tilting axis 37 and/or about the rotational axis 32 is enabled. Said tilting movement 27 can be enabled about an axis 37, while the rotation can take place about a linearly independent axis. The position cylinder pin 21 contacts a region of a corresponding receptacle in the tension rod 4 to coordinate and guide the movement of the tension rod 4. Alternatively, the longitudinal positioning cylinder pins 13 can have sufficient play in the corresponding receiving regions to allow movement in the receptacles which allows a corresponding tilting movement 27 and/or rotational movement 32.
After the screw 11 has been loosened, the belt 1 continues to be under tension. However, this tension causes, in particular, a transition movement into the non-functional state of the tension rod 4 after the screw 11 has been loosened, since the belt material reduces the stored energy and contracts as soon as it is able. This contraction is made possible by loosening the screw 11 and the interaction of the position cylinder pin 21 with the corresponding receptacle 23, after the longitudinal positioning cylinder pins 13 have been removed from their corresponding receptacles 24. Alternatively or additionally, the receptacles 24 for the longitudinal positioning cylinder pins 13 may be provided with a play which already allows a tilting movement 27 as soon as the screw 11 has been loosened, as described above.
Due to the transition movement (tilting 27 and/or rotation 32) of the tension rod 4 into the non-functional state, the belt 1 is relaxed and can be removed, in particular, without the tension rod 4 being completely disassembled from the receiving region 36. In particular, the screw 11 can still be in engagement with the thread 12.
The tension rod 4 has press-in seats 15 in which the longitudinal positioning cylinder pins 13 are fastened. Said press-in seats are arranged and designed such that the longitudinal positioning cylinder pins 13 can be accommodated with play in corresponding receptacles 24 provided in the receiving region 36 of the bottom roller body 16.
The tension rod 4 further has a bore for the screw 11 and a screw receptacle 9 for fixing the tension rod 4 to the receiving region 36.
Furthermore, the receiving region 36 of the bottom roller support 16 has the position cylinder pin 21, which can engage in a corresponding receptacle 23 of the tension rod 4 to lock the position in a functional state in coordination with the longitudinal positioning cylinder pins 13.
“May,” in particular, refers optional features of the invention. Accordingly, there are also developments and/or exemplary embodiments of the invention which additionally or alternatively have the respective feature or the respective features.
From the combinations of features disclosed in the present case, isolated features can also be taken as needed and used by resolving a structural and/or functional relationship possibly existing between the features in combination with other features for delimiting the subject matter of the claim.
LIST OF REFERENCE SIGNS
Claims
1. A tensioning device for a spinning unit and/or stretching device, comprising:
- at least one roller;
- at least one belt; and
- at least one tension rod;
- wherein the tensioning device is designed and configured such as to be transferred from a functional state into a non-functional state;
- wherein, in the functional state, the at least one roller is positioned in that the at least one belt is designed and arranged for exerting a tension on the at least one roller, in that the at least one belt is further designed and arranged for running around a section of the at least one roller and a section of the at least one tension rod such that a tension is transferred from the at least one tension rod onto the at least one roller via the at least one belt; and
- wherein, in the non-functional state, the tensioning device is designed and configured such as to move the at least one tension rod via tension on the at least one belt for removing the at least one belt from the at least one tension rod.
2. The tensioning device according to claim 1, wherein a transfer from the functional state to the non-functional state is reversible.
3. The tensioning device according to claim 1, further including at least one fastening device which is designed and arranged such as to connect the at least one tension rod to a main body, wherein loosening the at least one fastening device causes the tensioning device to be transferred from the functional state into the non-functional state.
4. The tensioning device-according to claim 3, further including at least one locking device which is designed and arranged such as to, in the functional state, lock the at least one tension rod in at least one direction; and
- wherein the at least one locking device is further designed and arranged such as to, in the non-functional state, moveably release the at least one tension rod in at least one direction for moving the at least one tension rod via the tension of the at least one belt.
5. The tensioning device according to claim 4, wherein the at least one locking device is fixedly arranged on the at least one tension rod in a socket, wherein, in the functional state, the at least one locking device locks the at least one tension rod in the at least one direction in a corresponding receiving region in the main body; or
- wherein the at least one locking device is fixedly arranged on the main body in the socket, wherein, in the functional state, the at least one locking device locks the at least one tension rod in the corresponding receiving region in the at least one tension rod in the at least one direction.
6. The tensioning device according to claim 5, wherein the corresponding receiving region is designed and arranged such as to determine a maximum play for the at least one locking device in the at least one direction in the corresponding receiving region for moving the at least one locking device in the corresponding receiving region in the at least one direction for a transfer into the non-functional state.
7. The tensioning device according to claim 5, wherein the corresponding receiving region is designed and arranged such that, in the functional state, the at least one locking device is in contact with a region for locking in the at least one direction, wherein a play is provided, such as to lose contact with the region when transferred into the non-functional state by moving the at least one tension rod, or such as to contact a different region when transferred into the non-functional state.
8. The tensioning device according to claim 5, wherein the at least one locking device is a longitudinal positioning pin.
9. The tensioning device according to claim 1, wherein movement of the at least one tension rod is a tilting about a first axis and/or a rotation about a second axis.
10. The tensioning device according to claim 3, further including at least one movement guide device which is designed and arranged for guiding movement of the at least one tension rod during a transfer into the non-functional state.
11. The tensioning device according to claim 10, wherein the at least one movement guide device is a position pin which is arranged in a socket of the main body and is arranged and designed such as to be received in a receptacle in the at least one tension rod for moving the at least one tension rod relative to the position pin in a play of the receptacle during the transfer into the non-functional state.
12. The tensioning device according to claim 3, wherein the main body is a bottom roller support.
13. The tensioning device according to claim 1, wherein the at least one tension rod is designed and arranged to, in the functional state, protrude with a section of the at least one tension rod around which the at least one belt runs.
14. The tensioning device according to claim 1, wherein the at least one one roller is one of a front bottom roller, a middle bottom roller, and/or a third bottom roller of a spinning unit or a stretching device.
15. A spinning unit comprising the tensioning device according to claim 1.
16. A spinning machine comprising the spinning unit according to claim 15.
Type: Application
Filed: Nov 22, 2023
Publication Date: Jun 13, 2024
Applicant: Saurer Spinning Solutions GmbH & Co. KG (Übach-Palenberg)
Inventor: Michael Reimann (Grevenbroich)
Application Number: 18/517,197
