LU508186B1 - Load-bearing structure and tensioning system - Google Patents

Abstract

The invention relates to a load carrier for upper rollers of a drafting unit of a textile machine, comprising at least one receptacle with a support for receiving at least one of the upper rollers. To improve the handling of a drafting unit and thus also of a corresponding spinning machine, the load carrier is provided to have a base body pivotable about a holder for the load carrier and a load arm connected thereto, wherein the at least one receptacle can be positioned on the load arm. The base body is designed and arranged to receive at least a part of a pre-compressor, in particular, wherein the pre-compressor is designed to pre-compress the fiber strip to the upper roller arranged first on the load carrier in the fiber strip transport direction.

Description

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IP/MINJ508186 04.09.2024

Description

Load-bearing structure and tensioning system

The invention relates to a load-bearing structure. Furthermore, the invention relates to a stretching device.

Drafting units are known from the prior art. For example, document WO 2017/191515 A1 describes a drafting unit of a textile machine, wherein the drafting unit comprises at least one roller and at least one corresponding counter-roller, between which a fiber assembly can be guided by clamping. The roller and the counter-roller each have a roller body and an axis of rotation, wherein the axis of rotation of the roller and/or the

The counter roller is supported on only one side. The roller is movably mounted between a rest position, in which the roller bodies of the roller and counter roller do not touch, and a loaded position, in which the roller bodies of the roller and counter roller are pressed against each other. During the transition from the rest position to the loaded position, the roller is moved into a

An intermediate position is movable, in which the roller bodies of the roller and counter roller merely touch. It is proposed that the axes of rotation of the roller and counter roller in the

The intermediate positions are aligned with each other in such a way that the roller bodies of the roller and

The counter roller has a common contact area that extends in the axial direction of the

The axis of rotation of the roller, as seen from the perspective, is smaller than in the loaded position. The proposed

The design is perceived as unsatisfactory, particularly with regard to handling.

Stretching system, especially during maintenance and/or, for example, when changing from one type of fiber tape to another type of fiber tape.

Therefore, a particular objective of the invention is to improve the handling of a drawing machine and thus also of a corresponding spinning machine.

The problem is solved by a load-bearing element with the features of claim 1.

The problem is solved by a stretching device with the features of claim 19.

Further features and details can be found in the dependent claims, the description, and the drawings. Features and details related to the

Load-bearing elements are described, also in connection with the textile machine, the

Use and procedures. This also applies in reverse, so that with regard to the

Revelation always refers to the individual aspects in a reciprocal manner -1-

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IP/MINJ508186 04.09.2024 can. Advantageous embodiments are the subject of the sub-claims.

From one perspective, the task is made particularly difficult by a load-bearing person with the

Features of claim 1 solved.

In accordance with the present invention, the following refers to a roller of a

In a preferred embodiment of the drawing unit, which is arranged on the load-bearing support, the upper roll is understood to be a roller. A counter roll of the drawing unit, which is associated with the roller to form a pair of rollers in the drawing unit, is understood to be a lower roll. In a cross-sectional view of the drawing unit along the conveying direction of the

The upper roller of the fiber tape thus forms, from a perspective, the roller arranged on the top side of the

pair of rollers and the lower roller, the counter roller arranged in perspective below it, of the

roller pair. The lower roller can preferably be attached in the usual way to a

The lower roller support of the drafting machine or textile machine may be arranged.

According to the invention, the load-bearing element has a holder for the

Load carrier pivotable base body and a load arm connected thereto, wherein at least one receptacle can be positioned on the load arm and further preferably fixed to it, as described elsewhere by way of example.

Preferably, the base body has a bearing point on the bracket to allow the base body to pivot around the bracket. The bearing point is designed to define a pivoting range for the load-bearing element, thereby enabling the load-bearing element to pivot around the bracket.

A bracket is provided. This further stiffens the structure of the

Load-bearing element. In contrast to other preferred embodiments, a

Material usage may be increased. The bearing point can be part of the basic structure of the

The bearing point can, in particular, function as a pivot joint to allow the pivoting movement of the load-bearing element around its mounting on the

To enable a spinning machine.

According to the invention, the base body is designed and arranged to include at least a part of a

to accommodate pre-compressor, in particular to design, wherein the pre-compressor is designed to first arrange the fiber belt on the load carrier in the fiber belt transport direction

The upper roller is pre-compacted. This allows the pre-compressor to engage with the base body in -2-

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IP/MINJ508186 04.09.2024 will be connected to a defined position.

Furthermore, it can preferably be provided that the bracket forms a permanently fixed part of the pre-compressor. The load-bearing element is pivotable about the

Mounting bracket. It may be provided that the bracket is installed together with the

The base body can form at least one fiber belt feed section of the pre-compressor. This allows the pre-compressor to be connected to the structure in a defined position.

According to a preferred embodiment, the pre-compressor may have a pivotable part. This part may be designed and arranged on the base body in such a way as to allow for pivoting during the transition to a position corresponding to an open state of the

The load-bearing element corresponds to being moved along with the base body during the movement around the bracket and to being in a further position, which corresponds to a closed, in particular locked, state of the load-bearing element, with the permanently fixed

Part of the pre-compressor to fully form the pre-compressor in order to guide the fiber belt unhindered through the permanently fixed part into the pivotable part of the pre-compressor, in order to pre-compress the fiber belt to a downstream component along the fiber belt transport direction

to transfer the input roller of the load carrier. By forming a pivotable part of the pre-compressor with the base body in combination with the

Due to the design of the permanently fixed part of the pre-compressor with the bracket, it is particularly possible that the fiber belt will be clamped during relative movement of the two parts. This can prevent the fiber belt from slipping out of the

Pre-compressors can be reliably prevented from malfunctioning, for example, during maintenance work on the

must be carried out on the load-bearing structure or the stretching system.

Preferably, the pre-compressor can also have an extension. This can be designed in particular as a fiber belt nozzle, the inner diameter of which is particularly narrower than the rest of the upstream guide structure of the pre-compressor.

This allows the fiber tape to be transported in a controlled manner and further compacted.

Extension can extend beyond an area where the pre-compressor is located in another

A component is formed. Another component can be a component such as the

Load-bearing structure, load-bearing arm, base body and/or bearing. With others

In other words, the extension in the fiber belt transport direction forms a final component of the -3-

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pre-compressor. This allows the fiber belt to be directed specifically towards the

The input roller is guided, and this can particularly reduce vibrations and/or

Lateral movements of the fibrous band are reduced.

The extension can be designed as a hollow body, such as a tube-like structure, and may, for example, have a cylindrical shape. This improves guidance and provides protection against external influences. Alternatively, or additionally in sections, the extension can preferably be open on one side, particularly on the top. This allows access to or viewing of the

Pre-compressor or extension may be possible. The extension may preferably have an inner diameter that tapers in the fiber belt transport direction to allow for further pre-compression of the fiber belt as required. The tapering may be continuous or in sections.

Furthermore, the extension can preferably be arranged on the pre-compressor in a tool-free interchangeable manner. This makes it easy to change various

Compressor diameter for various fiber materials without replacing the entire

to be able to use pre-compressors. For example, the extension and/or the

Pre-compressors have a snap-fit and/or clip connection for arranging and securing the

have an extension on the pre-compressor.

According to a preferred embodiment, the load-bearing structure can be divided into a first and a second

The reference structure can be further developed as described below. This allows the

Handling will be improved and the insertion of the fiber tape will be made easier.

The first reference structure can be formed and arranged on the load-bearing structure and the second reference structure on the at least one support. The first and second

Reference structures are designed and arranged in such a way as to define the position of at least one support relative to the load-bearing structure and thus relative to the tensioning system when the support is positioned adjacent to the first reference structure. This allows for precise positioning and adjustment of the support position and thus the

The upper roller can be used in an improved manner, as disassembly of the load-bearing element can be avoided, which further improves handling. -4-

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The term reference structure refers in particular to a mounting surface or a defined part of the load-bearing structure or support that can serve to define the

Positions and spacing of the roller mounts in relation to the first and second rollers, respectively.

to define a reference structure. The first reference structure on the load-bearing support thus forms a starting point for positioning the rollers in the drafting unit, enabling accurate and precise positioning of the fixtures and therefore of the upper rollers. In particular, this avoids the need to remove the load-bearing support to measure the distance between the rollers using calipers or another (mechanical) measuring device.

To be able to adjust the rollers of a drafting machine relative to each other in a defined manner.

The rollers can be, in particular, round bodies (cylinders, cones, especially those with a cut edge).

cones) that can be used in a drawing machine to stretch the fiber tape.

The structure of a roller comprises, in particular, a roller body with an axis of rotation and may also have a bearing at one or more points by means of which it can be arranged to rotate freely on a support, the support being designed to arrange the rollers on the load-bearing support. The mounting can be designed and arranged to accommodate at least a part of the roller's support. This enables the roller to be arranged on the load-bearing support.

The load-bearing element can preferably be designed and arranged to transition from an open state, such as a maintenance state, to a closed state, such as a force-acting state, for example, a load-bearing state.

When the maintenance condition is reached, the load-bearing structure can be moved, at least partially or completely, in order to open the drawing board in order to access both the

to be able to access both the counter rollers and the rollers of the load carrier. In a preferred installation state, which lies between the open state and the closed state.

If the state is captured, the drawing board may be closed, but the rollers and

Counter rollers may only touch, meaning they are merely placed on top of each other but not pressed together. This installation condition is advantageous for checking the alignment of the rollers and counter rollers relative to each other. Additionally, this protects the upper rollers, especially when the work area or machine is at a standstill, as they could otherwise be damaged by indentations in the structure of the associated lower roller under load. This is particularly true under the load condition, also known as -5-

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The stretched state can be described as the force required for active operation of the

Textile machine between rollers and counter rollers to prevent stretching in the

To enable stretching. This load condition can also be referred to as the operating condition.

In a load-bearing structure according to a preferred embodiment, in a preferred manner

White rollers, and further preferably in a drawing mill according to a preferred

In this embodiment, counter rollers are also provided, on both sides of an associated receptacle, each with two laterally projecting rollers, in other words, rollers projecting laterally from the receptacle.

The beam (axes) can be supported. Alternatively, a continuous beam or a continuous

A support axis may be provided. In preferred embodiments, rollers supported on only one side may also be provided, which are guided over at least one bearing so that they become rotationally movable on their support with the axis of rotation, the support being located only on one side.

The side may be taken from a photograph of the load-bearing structure. The axes of rotation of the

Rollers, also called axes of rotation, are arranged in such a way that they run collinearly with the axes of rotation of the roller bodies of the respective associated counter-rollers. In other preferred embodiments, the axes of rotation of the roller and

The counter roller is positioned at an angle to each other, which can be defined according to the requirements of the fiber tape to be transported and stretched.

When a fiber belt is in the load position of the drawing device between a roller and its

When the fiber is passed through a counter roller, as can be the case during the operation of the drafting machine, the respective roller bodies in particular exert a compressive force in the form of a clamping force on this fiber strip, the exerted force being perpendicular to their axis of rotation.

However, clamping force can vary due to the bending elasticity of the rotation axes and play between them.

The roller body and axis of rotation, and/or the play of the axis of rotation and corresponding bearing, may be inconsistent and can influence both the drawing result and the fiber strip transport result. This can be adjusted by modifying the load acting on the roller body, thereby adjusting the load and thus the clamping force accordingly, as described elsewhere.

According to another preferred aspect, it may be provided that the first

Reference structure at least one, in particular milled, reference surface as a stop and the second reference structure at least one, in particular milled, reference counter surface as -6-

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It has a counter-stop. This improves handling and adjusts the

Rollers, as described in more detail herein, are made easier.

A reference surface or a reference counter-surface is, in particular, a surface in or on the

Load-bearing structure or in or on the receptacle, which is preferably designed by machining (e.g., milling) such that it can serve as a reference for the arrangement of the receptacles. The at least one receptacle can be designed to have a support for receiving at least one upper roller, in order to be able to arrange the roller on the load-bearing structure, whereby a position of the roller can be assumed as required in the fiber strip transport direction.

The attack or counterattack is an exemplary, special form of

Reference structure, in particular the reference surface. The stop or counter-stop is, in particular, a surface or component used to establish a connection between a part of the load carrier and the at least one receptacle, and more preferably between the at least one receptacle and a further receptacle, in order to achieve a defined positioning of the receptacle to be positioned, and thus of the corresponding carrier of the roller, and thus of the corresponding roller itself. The receptacle can preferably be arranged on the load carrier such that an arrangement is formed at the stop or counter-stop, or relative to them, to hold the roller in the desired position and, more preferably, to fix it precisely in that position (the roller remains rotationally movable; only its relative position to the

The load-bearing element can be fixed).

According to a preferred embodiment, the reference surface and the

The reference surface is designed to define the positioning of the at least one recording by mutual contact between the reference surface and the reference surface when arranging the at least one recording. Alternatively or additionally, the reference surface and the reference surface are designed to define the positioning of the at least one recording with the insertion of a calibration piece when arranging the at least one recording, wherein the calibration piece is designed to be positioned between the reference surface and the

to be positioned as a reference surface and to be connected to the system in order to

The position of at least one recording relative to the load-bearing element must be defined and set. -7-

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According to the preferred aspect, at least one calibration piece can be assigned to the load-bearing structure in order to determine the distance between two recordings and/or the at least one

The process involves connecting to the first reference structure and thus defining and adjusting the position of the rollers in the drafting unit as needed. This improves handling and facilitates the replacement of the fiber tape.

A calibration piece is, in particular, an insert piece with a defined thickness, which is placed between the

Reference structure and the adjacent recording and/or the recordings for the carriers of the

Rollers can be arranged on the load-bearing structure to thereby change the relative positions of the

To define measurements relative to the reference structure, especially when designed as a reference surface. Calibration pieces can have different thicknesses to allow for different distances (when used individually, corresponding

Combinations are possible, depending on the desired relative position of the roller to the reference structure for a specific application. Calibration pieces preferably have a thickness between 20 mm and 5 mm, and more preferably, a thickness between 15 mm and 7 mm. In other preferred embodiments, calibration pieces with a thickness between 12 mm and 9 mm can be used.

According to a preferred embodiment, one of the first and second reference structures is designed as a projection, wherein an end-face projection surface extending in the direction of the

The fiber belt transport direction or opposite this direction indicates the reference surface or the

The first and second reference structures form a reference counter surface, and the other of the first and second reference structures forms a recess congruent to the projection for receiving the projection, with an end face of the recess pointing towards the projection surface and accordingly the

The reference surface forms the reference counter surface or the reference area. The reference area and the

The reference surfaces are preferably designed to be aligned with each other for positioning the at least one receptacle, or with the insertion of a calibration piece. The calibration piece is designed to be positioned between the reference surface and the reference surface and to align with them in order to define and set the position of the at least one receptacle relative to the load-bearing element. This further improves handling and facilitates fiber tape replacement.

Furthermore, according to a preferred embodiment, at least two receptacles can be provided, each receptacle having a second reference structure as described herein, -8-

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IP/MINJ508186 04.09.2024 and one of the two recordings either a further second reference structure or a first

The reference structure, as described elsewhere, comprises the second reference structure being formed and arranged at one of the at least two mounts to define the position of that mount relative to the load-bearing structure when that mount is positioned adjacent to the first reference structure of the load-bearing structure, and the second reference structure being formed and arranged at the other of the at least two mounts to define the position of the other mount relative to the already positioned mount or relative to the

Load-bearing capacity when ordering this other recording adjacent to the first

Reference structure or to the further second reference structure of the already positioned one

to define the image. The principle of positioning the image using reference structures can therefore also be applied to the positioning of further images, thereby enabling the

Handling can be further improved and the replacement of the fiber tape made even easier. In particular, the reference structures are preferably located on opposite sides.

The end faces of the images are arranged and formed. This allows the reference structures of two adjacent images to be easily positioned opposite each other, in order to simplify the exact positioning as described elsewhere.

It may be further preferably provided that at least one calibration piece is included.

The load-bearing element is assigned and designed to be positioned between the reference structures, be it a first and second reference structure or two second reference structures, of two adjacent recordings and to be integrated into the system in order to...

The position of one image relative to the other adjacent, already positioned image or relative to the load-bearing structure is to be defined and set as described above.

The concept described above preferably allows for an arrangement of several

Images within the load-bearing structure are positioned relative to each other by initial orientation to the first reference structure of the load-bearing structure. This structure preferentially forms the

Reference point for all recordings. In a preferred embodiment, it can be provided that the recording is for a (first) roller to be inserted, in particular a

The output upper roller can be arranged on the load carrier in such a way that it assumes a defined relative position to the first reference structure. According to a preferred

In this embodiment, it can be based, for example, on this first reference structure, which is preferably as

The reference surface may be formed, adjacent. The recording may preferably be a -9-

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IP/MINJ508186 04.09.2024 form a single assembly, in particular one consisting of several parts, to accommodate the support and, more preferably, a spring, as described in more detail below, and in a

to assemble the component group.

According to a preferred embodiment, at least one along a

Fiber belt transport direction of the drawing device, recess laterally bounded by a

The rail is formed in the load-bearing structure, wherein the at least one receptacle is provided by means of the at least one recess and the rail along the load-bearing structure.

The fiber belt transport direction can be fixed after assuming a defined position.

The rail is preferably provided and designed in the load-bearing structure to allow the

Mounts and, preferably, a calibration piece is arranged on the load-bearing structure. The calibration piece can, in particular, be positioned between two mounts (as corresponding assemblies) or between the at least one mount and the

The load-bearing element is clamped in place. The rail can serve as a rigid structure that secures the load.

It is possible to fix the position of the rollers relative to each other, for example by screwing the mounts to a specific relative position from above the load-bearing structure.

This makes it easier to insert and change the fiber tape, as only one opening of the

load-bearing structure (corresponding to the tensioning system) can be carried out, whereby the

Rollers and their carriers can be removed to replace them with new or different rollers.

to be able to exchange supports. A corresponding change in positioning can be made, in particular, if this is necessary or desired. Otherwise, the

Positioning via the rail is achieved in such a way that a position is maintained relative to the reference structure. The rail can be oriented to achieve a specific

The longitudinal direction is used to position the rollers in a specific order along the

to be able to arrange the fiber belt transport direction. This arrangement can help to...

To improve the handling of the load carrier and to facilitate the replacement of the fiber tape.

According to a preferred embodiment, a spring can be placed in a spring holder on the

Load-bearing elements may be arranged. These can be designed in such a way as to position the

The roller is to be loaded in a defined manner after the roller has been arranged on the support in a direction of application of the roller leading away from the load-bearing support, wherein the direction of application is the direction along which the roller is provided, with an associated -10 -

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The counter roller of the drafting unit is brought into contact with the fiber strip via a pressure contact. This allows for a load to be applied between the roller and counter roller, for example for drafting, without requiring a correspondingly complex and/or expensive setup. This further simplifies handling and reduces resource consumption.

The term spring refers in particular to a component of the load carrier that may be designed to generate a specific load between the roller and counter roller, especially in the load state of the drafting unit, in which the textile machine can stretch the fiber strip in order to spin a yarn from the stretched fiber strip, or to carry out spinning via a defined fiber strip feed, or to perform other processes of the

to perform textile machine operation. This load can help to stretch and/or stabilize the fiber sling in order to achieve the desired production parameters for the product being processed by the

to achieve the manufacturing processes to be carried out on the textile machine. The spring can be arranged and designed accordingly to provide a defined force in a specific direction, as described herein, to reduce the load between the roller and

To define the counter-roller.

Overall, both the reference structures and the spring offer possibilities for

Improvement of the handling of the load carrier for rollers in the drawing frame of a

Textile machine, by enabling precise positioning and efficient loading between roller and counter roller. In preferred embodiments, the reference structures and the spring can be provided independently of each other, but can alternatively complement each other, especially when present simultaneously, as they enable positioning at the correct spatial position along a

Fiber belt movement direction in a drawing machine, appropriately tailored to the requirements

Stress is applied to control the parameters of the manufacturing process, such as a

to be able to adjust fiber tape for thread production.

According to a preferred aspect, the spring holder may be provided with at least two clamping positions for adjusting the load of the components interacting with the spring.

It features a roller. This allows for a simpler and lower-maintenance mechanical design, which can improve handling. -11-

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A spring holder is, in particular, a structure, component, and/or assembly that can accommodate and fix a spring to allow for a specific load.

With reference to a load carrier for rollers, the spring holder can serve to hold a spring which is used to exert a compressive force on the roller and via this to an associated counter roller.

A spring tension position is, in particular, a specific arrangement or configuration of the spring on/in the spring holder, whereby the spring can be tensioned to exert a specific load, i.e., a compressive force that correlates with the clamping force, via the tensioned roller onto the counter roller. These tension positions are preferably selected such that a defined clamping force associated with these tension positions is generated in a selected tension position in order to distort or stabilize the fiber strip in the drawing unit as required, as for use in a specific application.

Manufacturing process desired. Each clamping position can be assigned its own clamping force, meaning the clamping forces of the individual clamping positions are preferably different from each other.

Adjusting the load specifically refers to modifying the clamping force at the clamping line between the roller and counter roller to achieve the required load. This is accomplished by selecting one of the spring's tension positions to transmit the desired force to the counter roller. Precise load adjustment ensures improved processing of the fiber strip and prevents potential damage or insufficient stretching.

According to a preferred aspect, the load carrier can have a torsion spring as a spring, wherein a spring arm of the torsion spring can be moved tool-free between the at least two

The clamping positions can be arranged in an adjustable manner, and the other spring arm is arranged in a

to apply spring force to the support, particularly directly. The torsion spring can be adjusted (i.e., reversibly adjusted) between the clamping positions described above, particularly without tools. This allows the

Handling can be improved, in particular by easily adjusting for changes in load (and thus changes in contact pressure between the roller and counter roller). Alternatively or additionally, the spring can be designed and arranged as a compression spring to apply a compressive force to the support. This can reduce friction points and thus “12 -

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Tolerance influences are minimized.

A torsion spring, also known as a torsion spring or leg spring, is in particular a

A spring capable of rotating and moving between at least two

The tension positions should be adjustable. The torsion spring can preferably have a spring body, such as a coil spring, from which two spring arms or legs can extend.

In the case of the load-bearing element, the torsion spring can serve as a spring to provide a defined force.

To create a load between the roller and the counter roller, particularly depending on the selected clamping position.

In a preferred embodiment, the mount has a spring arm mount.

The spring arm mount is preferably connected to or integrally formed with the spring holder. More preferably, the spring holder and spring arm mount are integrally formed with the mount. The spring arm mount is, in particular, a

Assembly comprising a cavity in which at least two, in particular three, and further in particular several, receptacles for the spring arm of the torsion spring can be formed.

These recordings make it possible to measure the spring arm of the torsion spring between the respective

to adjust the clamping positions assigned to the recording. In particular, one spring arm is rotated into a position relative to the main spring body, while the other

The spring arm interacts with a part of the carrier, for example through an engagement or a support, to position the carrier and thus the roller according to the selected parameters.

to subject the clamping position and the resulting tension to compressive force and thus the

To be able to clamp or press the roller against an associated counter roller in the assembled state of the drawing machine with the load carrier.

The spring arm mount is arranged parallel to the rail described elsewhere, in order to allow for its precise positioning using calibration pieces. This enables precise positioning of the torsion spring, particularly in a single step with the positioning of the

Recording relative to the first or second reference structure, thus enabling an adjustment of the

To improve the load between the roller and the counter roller.

Using a torsion spring as the spring improves the handling of the load-bearing element, as changes in load can be easily adjusted without the need for special tools. The torsion spring can be used between the -13-

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Clamping positions can be adjusted without tools. This further simplifies handling and

Reduction of effort during maintenance or when changing rollers.

Alternatively, and preferably, a compression spring can be provided. The compression spring is, in particular, a spring designed to generate a spring force in a linear direction, which is particularly parallel to and coincides with a principal direction of extension of the compression spring, in order to pre-tension the associated roller. This can be achieved, in particular, by the compression spring interacting with the associated roller support via a spring plunger, thereby transmitting pressure to the roller, which is movably mounted (slidably) in the tension direction. This pressure can be compensated, for example, in an assembled state of the drawing device with the load carrier, by an interaction with a counter-structure, such as a ribbon or a counter-roller, whereby the pressure on a fiber ribbon to be drawn can be increased.

In preferred embodiments, it can be provided that the compression spring is divided into different sections.

Positions in a spring holder, which is in particular encompassed by at least one receptacle, are preloaded in order to increase the spring tension that is to be transmitted to the fiber tape. For this purpose, the compression spring can, for example, be used as a

It should be designed as a spiral spring that can be compressed in its main direction of expansion.

The compression spring can be designed to be pre-tensioned by having a spring housing, provided at least at one receptacle and containing the compression spring body, which has at least two indentations that may be arranged at different heights. These indentations may be connected by means of a recess in the spring housing to form, for example, an F or an E shape. The compression spring may have or be connected to an upper part from which a guide element projects to guide it within the recess. The compression spring can be moved by a pressure movement on the upper part, thereby compressing or relieving the compression spring depending on the direction of movement. By a lateral movement—relative to the insertion direction—the guide element can be pushed into the indentations (which may also be recesses in the spring housing) to hold the compression spring in a pre-tensioned position. Each indentation defines a tension position for the spring.

In a preferred embodiment, the support and the receptacle are connected by a pivot joint -14-

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IP/MINJ508186 04.09.2024 connected to move the upper roller following the spring load.

This allows the contact pressure between the roller and the associated counter roller to be generated or transmitted accordingly. In particular, this makes it possible to introduce only a low to very low material load into a load-bearing material, since the rotary joint can transmit the movement accordingly. This allows the

Adaptation to a newly set load can be improved when changing the fiber tape.

A swivel joint is, in particular, a component of the load-bearing structure that allows the structure to rotate on the mounting and can serve to enable movement of the roller relative to the associated counter-roller depending on the load from the spring.

The swivel joint allows the roller to be positioned without significant movement.

Material loads must be introduced into another component of the load-bearing structure.

This allows for improved adaptation when changing the fiber tape to a newly set load.

Material stress in a beam is defined as occurring when a component of the load-bearing beam experiences a

Force must be absorbed to hold the roller in the desired position or to move it into that position. The swivel joint can help to reduce or avoid this material stress, as the movement and force transmission can occur via the swivel joint.

This can improve the handling of the load carrier as well as its durability.

According to a preferred aspect, the load-bearing structure may have a pressure piece to...

To position the support of the roller to be installed (and thus the roller itself). The pressure piece can be designed to be preferably formed and arranged in at least one of the receptacles such that it positions the support on the receptacle, in particular locking it in place, and furthermore in particular by engaging in a groove formed on the support.

This makes handling the roller easier and simplifies changing the carrier with the roller.

A pressure piece is, in particular, a component that can preferably be designed to...

To position the support for the roller to be installed and to hold it in a specific relative position (in particular, to be understood as a distance position relative to the fixture).

The pressure piece is preferably attached to the load-bearing element, more preferably to the receptacle -15-

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IP/MINJ508186 04.09.2024 arranged to lock the roller support so that the roller is in a required position

The position (especially to be understood as the distance position relative to the recording) can be maintained.

For the purposes of the present invention, "needs-based" is to be understood synonymously as "requirements-based," "appropriate," "needs-oriented," "desired," or similar. This includes, for example, a measure that is determinable, definable, selectable, or the like, in order to achieve an appropriate, needs-oriented, or desired goal or result.

To position the pressure piece in the receptacle, a groove can be formed on the carrier into which the pressure piece can engage, thus locking the carrier to the receptacle that holds it. The locking mechanism can, for example, be located along the

Longitudinal axis of the beam, which is parallel to an axis of rotation of the components supported by the beam

The roller is involved. If a force such as a compressive or tensile force is applied to the support in the direction of the longitudinal axis, the pressure piece can be pushed back, thereby causing the

The locking force that holds the carrier in place through the pressure piece can be overcome, allowing the carrier to be removed with the roller, particularly without tools.

The pressure piece enables easy handling and facilitates the changing of the carrier with the roller, as it is possible to position and lock the roller in a required position on the mount, for example along the longitudinal axis of the carrier, without the need for additional tools, in particular measuring devices or measuring tools.

The pressure piece can, for example, be an engagement element for engaging the groove of the carrier, which is subjected to a defined spring pressure force in the direction of the

The longitudinal axis of the beam is prestressed in the receptacle in such a way that the beam can be interchangeably arranged in the receptacle.

The pressure piece allows the carrier, and thus the roller, to be removed from the holder or load carrier without tools. This improves handling, particularly by simplifying roller changes, for example, in case of wear or when the spinning process changes, such as when a different fiber ribbon requires different roller properties. - 16 -

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IP/MINJ508186 04.09.2024

Tool-free refers in particular to the possibility that no aids such as special tools are required to remove or position the rollers.

In particular, no screwdrivers, cordless screwdrivers, calipers, pliers or similar tools are required.

Removing at least one roller from its housing using the support means, in particular, that a design is provided in which the roller support can be easily removed from a specific point without the need for additional aids such as tools. This allows for simple and quick replacement of the at least one roller, especially when wear has occurred or when the

The spinning process is to be changed. The removal can be done, for example, by pulling on the

Carriers can be used without the need for separate aids such as tools, for example, to...

to overcome the locking force as described elsewhere.

According to a preferred embodiment, the load carrier has a locking mechanism which is designed and arranged to secure the load carrier, in particular by means of a

Swiveling movement around a bracket, between a closed state, as on another

The example described above, and to move it to an open state, as described elsewhere by way of example, and in the closed state on the stretcher or on the

The textile machine is locked, with the locking mechanism being located either downstream of a final intake or upstream of a first intake in the fiber strip transport direction. This stiffens the structure to limit and restrict the relative movement of the upper and lower rollers. This improves the stretching of the fiber strip. Furthermore, adjustment ranges of the load carrier for setting the load on the upper rollers remain freely accessible, at least in the closed state, and preferably also in the open state, as they are not covered or concealed by the locking mechanism.

The locking mechanism can preferably be designed as a lever with a handle, wherein the handle can be connected to a gripper via a lever in such a way as to bring the gripper into contact with a counterpart by means of a pivoting or pushing movement in order to lock the

to lock the load-bearing element, thereby ensuring that the load-bearing element is in a drawing frame.

The upper and lower rollers can be locked in a relative position to each other. - 17 -

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IP/MINJ508186 04.09.2024

The upper rollers are arranged in such a way as to the associated lower rollers that they can be positioned higher with respect to the floor surface of a spinning machine.

The load-bearing support for the upper rollers thus enables a movement of the

Upper rollers from the lower rollers. The locking mechanism can be opened for this purpose, allowing a

The locking mechanism of the load arm, and thus of the upper rollers relative to the lower rollers, can be released. Then the load arm can be moved away from the lower rollers by a pivoting movement, particularly at least partially in a vertical direction, in order to...

to interrupt the combination of upper and lower rollers, in order to, for example,

to reach, remove and/or insert the fiber tape that is to be stretched between the two, and/or to carry out defined maintenance measures on the

to carry out work on the load-bearing structure or one of its components.

The locked state can be understood as one state, with a state with the lock released being understood as another state. An open state can also be understood as another state, especially if the

The load arm is pivoted into a position that allows access to the space between the upper and lower rollers. This pivoting movement can occur around a support, such as a rod, which connects the load carrier, its base body, and/or its load arm to a spinning machine.

In preferred embodiments, the bracket can be screwed to a spinning machine. In other preferred embodiments, it can be welded to the spinning machine or connected in some other reversible or irreversible manner.

In a preferred embodiment, the locking mechanism is located downstream of a final receptacle in the fiber belt transport direction. This final receptacle can be a receptacle for supporting an output upper roller. The output upper roller serves to...

The fiber sliver, in its maximally stretched form according to the given settings, is to be discharged from the drafting unit in order to be further processed in the spinning machine. An output roller pair can, in particular, consist of the combination of

The output upper roller and output lower roller are the two. The output upper roller and the output lower roller are the two.

The output roller pair can be used along a fiber belt transport direction in the operating state as the last roller or roller pair in the drawing unit for drawing the

fiber tape contribute. -18 -

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IP/MINJ508186 04.09.2024

According to an alternative preferred embodiment, the locking mechanism is in

Fiber belt transport direction is upstream of a first intake. The first intake can be a holder for an inlet upper roller.

The upper inlet roller serves to separate the fiber tape from a fiber tape feed and/or a

to take over the pre-compressor and guide it into the deflection area of the drawing frame. A

The input roller pair can in particular be the combination of the input upper roller and

The incoming roller may be the first roller or pair of rollers. In particular, it may be provided that the incoming roller or pair of rollers along a fiber strip transport direction is the first roller or pair of rollers that can contribute to drawing in the drawing unit during operation.

The upstream arrangement of the locking mechanism allows the design a certain degree of fundamental flexibility in the relative positioning between the upper and lower rollers. This is primarily due to the fact that the locking mechanism is designed to accommodate a

The pivoting range, for example around a bracket, is more closely associated than in other preferred embodiments. In other words, a range between the

The locking mechanism and the output upper roller should be less rigidly fixed.

The downstream arrangement of the locking mechanism allows the design to achieve increased and fundamental structural stiffening in the relative positioning between the upper rollers and

Underrollers experience this. This is primarily due to the fact that the locking mechanism is a

A locking mechanism at the outer end of the load-bearing element allows for a reliable hold. In other words, this creates an area between the locking mechanism and the

The output roller must be rigidly fixed, as the locking mechanism runs along the fiber belt transport direction.

The rollers are arranged downstream on the load arm.

According to another independent aspect, a trawling system can have at least one

exhibits load-bearing capacity, as described elsewhere. This allows the advantages, characteristics, and effects listed in this regard to be used to...

To describe the stretching system, as already explained elsewhere.

A drawing machine is, in particular, a device, as described elsewhere, that can be used to stretch or draw a fed fiber ribbon. It can -19-

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IP/MINJ508186 04.09.2024 also referred to as a rolling mill and consists in particular of at least two

Pairs of rollers, each having corresponding rollers and counter rollers.

According to this independent aspect, the drawing unit is a drawing unit for a textile machine to prepare a supplied fiber strip in a defined manner before it is processed into yarn, for example by means of a device downstream of the drawing unit in the textile machine.

According to another independent aspect, a textile machine can have at least one

The machine must have a load-bearing structure, as described elsewhere, and/or at least one drafting unit, as described elsewhere. This allows the advantages, features, and effects listed in this regard to be used to describe the textile machine, as already explained elsewhere.

A textile machine is a machine used for processing or manufacturing raw materials into textiles.

It can be used for manufacturing textiles. The textile machine is preferably a pre-spinning machine such as a carding machine or a flyer, or a

Spinning machine such as an air spinning machine or a ring spinning machine, each of which

The drawing machine has a load carrier for processing fiber strips.

In general, the textile machine can be one that includes a drafting unit with a load carrier for upper rollers for processing fiber strips.

According to an independent aspect, the use of a load carrier and/or a drawing device and/or a textile machine may take place in order to achieve or implement the advantages and effects, in particular through the features, as explained in relation to the individual aspects and as already set out elsewhere in this regard.

When using the load-bearing structure, as described elsewhere, and/or a stretching system, as described elsewhere, and/or a

The textile machine, as described elsewhere, can produce a fiber ribbon in a closed state — particularly with regard to the drawing unit and/or the

Load carriers — are guided in a pre-compressor to introduce it to an input roller of the

to feed into the drawing system. In an open state — especially with regard to the

Stretching device and/or the load-bearing element — can the fiber belt be moved by pivoting a pivotable part of the pre-compressor relative to a fixed part of the pre-compressor by - 20 -

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IP/MINJ508186 04.09.2024

Transferring the mechanism into the open position can cause it to become clamped, especially between the permanently fixed part and the pivotable part.

According to another independent aspect, a procedure for changing at least one roller can be designed. The procedure can include the step of transferring the

The load-bearing element changes from a closed state, as described elsewhere, to an open state, as described elsewhere. The method may include the step of removing the at least one roller by axially moving the

The method involves moving the carrier relative to the fixture along an axis of the carrier in order to remove the carrier from the fixture. The method may include a step of changing the roller and/or the carrier. The method may also include a step of arranging the carrier (with a new roller / with a different roller) on the fixture. This allows the advantages, features, and effects listed in this regard to be utilized to...

The procedure is described as already explained elsewhere.

One use of a load carrier, as described elsewhere, involves in particular the application of a mechanical force to a roller to create or change tension in a fiber strip. The load carrier is used, for example, in a

A textile machine, as described elsewhere, is used to pretreat the fiber tape.

For example, to distort the production of a yarn.

One use of a drafting machine, as described elsewhere, involves in particular the application of a mechanical force to a roller to stretch or warp a fiber strip. The drafting machine is used, for example, in one of the aforementioned applications.

Textile machines are used to stretch the fiber ribbon before producing, for example, a yarn.

The use of a textile machine, as described elsewhere, specifically involves the use of a textile machine to produce a roving or yarn.

This may include the use of one of the textile machines described elsewhere.

The textile machine is equipped with a load carrier and/or a drawing unit to enable the corresponding process steps.

According to another independent aspect, a positioning procedure can be at least - 21 -

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IP/MINJ508186 04.09.2024 of a receptacle with a support for receiving a top roller on a load-bearing support, as described herein. The method comprises the step of arranging at least one receptacle on the load-bearing support and the subsequent step of

Positioning the at least one mount relative to the load-bearing structure adjacent to the first reference structure, wherein the positioning is achieved by placing the second reference structure against the first reference structure or by using a calibration piece with the intermediate position of the

A calibration is performed between the first and second reference structures. This allows the advantages, characteristics, and effects listed in this context to be used to describe the procedure, as already explained elsewhere.

Preferably, the method can include a further subsequent step of fixing the at least one receptacle to the load-bearing structure by means of a fastening means which is designed and arranged to fix the receptacle to the load-bearing structure in a fixed position.

This allows for a permissible positioning of at least one recording.

Furthermore, the procedure may preferably include a step of ordering at least one further

The device comprises a mounting on the load-bearing structure and a subsequent step of positioning at least one further mounting relative to the load-bearing structure adjacent to the already positioned mounting, wherein the positioning is carried out by using a calibration piece with the calibration piece interposed between the second reference structure of the already positioned mounting and the at least one further mounting positioned adjacent to it.

A recording is made. This allows all recordings of the load-bearing structure to be positioned relative to the first reference structure on the load-bearing structure and further preferably fixed to the load-bearing structure using an associated fastening device.

This allows the advantages, features and effects listed in this regard to be used to describe the process, as already explained elsewhere.

A positioning method is, in particular, a method in which one or more

Images are taken in specific positions relative to each other or relative to the load-bearing structure. This can be achieved by using calibration pieces that can be inserted or removed between the reference structures.

The step of extracting – as an alternative or in addition to the step of inserting – from

Eichstücken refers in particular to the addition - alternatively or additionally to the “292 -

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IP/MINJ508186 04.09.2024

Removing calibration pieces between the reference structures to ensure correct positioning of the

to improve the recordings. This step allows the positions of the recordings, and thus ultimately the rollers, to be set and adjusted precisely as needed in the direction of a fiber belt transport, in order to meet specific requirements or to improve the

To optimize the behavior of the drawing machine during operation.

According to another independent aspect, a method for loading the roller relative to a counter roller can be designed. The method can include the step of adjusting the

The spring must have a clamping position between at least two positions in the spring holder, as described elsewhere. This allows the advantages, features, and effects listed in this regard to be used to describe the method, as already described elsewhere.

The point is explained.

A method for loading the roller relative to a counter roller can be a method that serves to exert a specific force on the roller in order to load the roller with a desired force.

The pressure is applied to the counter roller, thus creating a specific clamping force between them, which can be transferred to the fiber strip running between them.

The method can be implemented by using a spring that is positioned between at least two

Clamping positions can be set.

By adjusting the spring between these clamping positions, the clamping force that can be exerted by the roller can be set and adjusted to achieve a specific result.

To achieve the required load. The process thus enables an adjustment of the clamping force between the roller and the counter roller and can contribute to the flawless functioning of the drafting unit or textile machine and to improved product quality.

The step of adjusting the spring between at least two clamping positions in the spring holder can be carried out accordingly by moving the spring from one clamping position to the desired clamping position, as described elsewhere by way of example.

Further advantages, features and details of the invention will become apparent from the following.

Description in which exemplary embodiments are described in detail with reference to the drawings. The following may be mentioned in the claims and in the description -23-

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IP/MINJ508186 04.09.2024

Each feature, individually or in any combination, may be essential to the invention. They are shown schematically:

Fig. 1 shows an embodiment of a load carrier with upper rollers;

Fig. 2 shows a top view of the embodiment from Fig. 1;

Fig. 3A shows a sectional view through the embodiment in Fig. 2;

Fig. 3B shows a side view of an upper roller with an indication of a sectional view;

Fig. 4 shows the embodiment from Fig. 2 in a top view with an indication of the

Adjustment ranges;

Fig. 5A shows an embodiment of a load carrier with upper rollers;

Fig. 5B shows an embodiment of the load carrier with upper rollers made of

Fig. 5A in a side view;

Fig. 5C shows a sectional view through the embodiment according to Figures 5A and 5B;

Fig. 6A shows a side view of an embodiment of the load carrier with upper rollers according to Figures 5A and 5B in the closed position;

Fig. 6B shows a side view of an embodiment of the load carrier with upper rollers according to Figures 5A and 5B in the open position; and

Fig. 7 shows a simplified bottom view of an embodiment of the load-bearing structure with

Top rollers according to figures 5A to 6B.

The same applies to elements and structures that have the same effect and/or are of the same type.

Reference symbols used.

Fig. 1 shows a schematic representation of an embodiment of a load carrier 16 of a drafting machine 10 with several upper rollers 20. The load carrier 16 is specifically designed to accommodate four upper rollers 20 in the illustrated embodiment, with one extending along a [missing information - likely a specific direction] in the arrangement direction of the upper rollers 20.

Fiber strip transport direction (not shown): The first upper roller 20 forms an inlet upper roller 21 to introduce a supplied fiber strip (not shown) into the distortion area of the drafting unit. A [missing information] in the arrangement direction of the upper rollers 20 along the

Fiber belt transport direction last upper roller 20, in this embodiment the fourth

The upper roller 20 forms an output roller 23 to guide the fiber strip out of the drafting unit 10. In this embodiment, the upper rollers 20 are passively driven. With “24 -

ABO034LU

IP/MINJ508186 04.09.2024 In other words, the drive of the upper rollers 20 takes place in an operating state of the drawing unit.

About the rollers 20 each assigned to the upper rollers, which are in rotating contact

Lower rollers (not shown), which are driven, in particular individually. According to a further embodiment, at least one of the upper rollers 20 can also be driven, in particular individually, in order to support the fiber strip transport in the fiber strip transport direction or against it in a defined manner as required. This allows a

Movement is initiated to move the fiber belt from a pre-compressor 70 to introduce the

Fiber tape in a pre-compacted manner into the area of the drawing device 10 between the

Lower rollers, possibly also between at least one belt (not shown) and the associated upper rollers 20 (here too a belt may be used, but made of

(For reasons of clarity, it is not shown in detail, it is intended to be) to lead in order to define and extend this.

The upper rollers 20, and correspondingly also the inlet upper roller 21 and/or the

The output upper roller 23 can be arranged on each of the carriers 38 on an associated receptacle 39 in order to connect the upper rollers 20 to the load carrier 16 and to arrange them on it.

At the output upper roller 23 and a belt upper roller 22 positioned upstream of the output upper roller 23 in the fiber belt transport direction in this embodiment,

Suction devices 36 are arranged, via which fiber residues can be extracted by means of hoses 34 and funnel elements 34A connected thereto (for clarity, only one funnel element 34A on the belt upper roller 23 is shown), wherein each funnel element 34A has one end connected to the associated

Hose 34 is connected and preferably one of the other end is attached.

Outer circumferential surface of the assigned upper roller 20 congruent contour to the partial

The extraction devices 36 can be clipped on, in particular by means of a clip device 92, especially onto a

Carrier 38, on which the belt upper roller 22 or the output upper roller 23 can be arranged. The clip device 92 can have a holding device 91 for this purpose, which is provided and designed to hold the funnel element 34A at a defined distance from the

The clip device 92 has a clip element 93 for clipping onto the carrier 38. The clip device 92 can, in a further preferred configuration, be designed to include a belt cage 22A (FIG 2) for arrangement between the upper roller 20 and the carrier 38.

ABO034LU

IP/MINJ508186 04.09.2024 of the belt upper roller 22 and the output upper roller 23 in such a way that the belt runs around the belt upper roller 22 and the belt cage 22A in the usual way in the operating state of the drawing unit 10 or the load carrier 16 in order to treat a supplied fiber belt in the usual way.

The load carrier 16 has in particular a base body 30 which can be moved manually, i.e. by hand, or automatically by a service robot (not shown) via a handle 32 from a

Operating state or stretched state as a load state in which the upper rollers 20 with the associated lower rollers can form a clamping force, also as closed, locked

State Z1 can be designated as a state that can be converted into an application state in which this

Clamping force can be lost. To service the drawing device 10, the base body 30 can be moved to an open state Z2 as a maintenance state (FIG 6B). An open

The condition is characterized by the fact that the upper rollers 20 of the load carrier 16 are spaced apart from their respective lower rollers. The maintenance condition defines one of several possible open states. The base body 30 can be

The handle 32 is attached to a textile machine via a bracket 28, wherein the base body 30 can be rotatably arranged on the bracket 28 about a longitudinal axis L of the bracket 28 (FIG 2). The handle 32 can be designed as part of a locking mechanism 31, in which a pivoting movement can be performed via a lever 35, which can be rotatably mounted on a joint 60, to engage a gripper 33 (also referred to as a gripping device) arranged on or formed with the lever 35 with a counterpart of the

to bring the textile machine or the holder 28 into such a locking contact in order to

The load carrier 16 with the upper rollers 20 is locked relative to the lower rollers in order to assume the locked, closed state Z1, which corresponds to the operating state, the stretched state, or the loaded state, from the open state Z2 or a different open state. The handle 32 thus enables a required pivoting movement of the load carrier 16 between the open and closed states.

State Z2, or an open state, and the locked state Z1. According to a preferred embodiment, further states may be provided in order to be able to carry out required measures on the load carrier 16.

For example, a load carrier 16 in the opening direction can correspond to the open state

Z2, the subsequent open state may be provided to allow improved access to the underside of the load-bearing element 16. Furthermore, preferably

In such a way, an additional open state may be provided between positions Z2 and Z1, - 26 -

ABO034LU

IP/MINJ508186 04.09.2024 which is sufficient, for example, to handle the spring 24. Furthermore, an additional closed state can be provided between the state positions Z1 and Z2, wherein in this additional closed state the pressure force of the upper roller 20 on the associated lower roller is less than in the closed state Z1 with an identical spring position. This additional closed state can, for example, be the one described above.

be in the investment state.

The load carrier 16 has a load arm 76 projecting from the base body 30, on which, in particular for each of the four upper rollers 20, a receptacle 39 is arranged for the one-sided reception of one of the upper rollers 20, according to this preferred embodiment. The receptacle 39 can, in an alternative preferred manner not shown, be used for

The base body 30 and the load arm 76 are preferably formed in one piece from the same material, but alternatively, and more preferably, can also be formed in multiple parts, preferably from different materials.

Adjacent to the base body 30, the pre-compressor 70 is arranged on the bracket 28 such that the fiber belt to be supplied to the drawing unit 10 is directed towards the clamping area of the

The feed is directed to the input roller pair of the stretching unit 10. The pre-compressor 70 is positioned on the

Mounting bracket 28 is clipped on; alternatively, it can be slid onto mounting bracket 28 or by means of a

The clamping bracket is attached to the support 28. The pre-compressor 70 has a funnel-shaped inlet, the opening of which tapers towards the drafting unit for compacting the fiber strip up to the funnel outlet 78. Downstream of the funnel outlet 78, in the fiber strip transport direction, is a fiber strip feeder 79 to guide the pre-compressed fiber strip in a targeted manner towards the inlet upper roller 21.

According to this embodiment, the fiber belt feeder 79 is designed as a single unit with the funnel 77.

According to this preferred embodiment, the receptacle 39 has a spring arm receptacle 49 for receiving a spring 24, wherein the spring arm receptacle 49 is connected to a spring holder 42 for holding the spring 24. Furthermore, the receptacle 39 comprises a

Support bracket 54 for holding the support 38, which carries the upper roller 20. The support 38 can be configured to carry one upper roller 20 or two upper rollers 20.

The support bracket 54 is connected to the spring bracket 42 via a swivel joint 55. - 27 -

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IP/MINJ508186 04.09.2024

The pivot joint 55 can be constructed and designed in the usual manner. The fundamental principle is that the pivot joint 55 allows the support bracket 54 to rotate about an axis that runs parallel to the axis of the support 38 or the upper roller 20. Preferably, the pivot joint 55 can be designed by pivot pins that project into pin openings, with the pivot pins being attached either to the support bracket 54 or to the

Spring holder 42 and the pin openings in a corresponding manner either at the

spring holder 42 or on the support bracket 54 are arranged for mutual engagement.

According to one embodiment, the pivot pin can be formed by a pivot rod 56, which has a receiving channel in the support bracket 54 at both ends of the

The recording channel is extended to allow for corresponding placement on the outside of the

to be able to receive the pin openings arranged in the receiving channel, which are arranged in the spring holder 42.

Preferably, a reference structure 61 can be formed and/or arranged in or on the load carrier 16, in particular on the load arm 76, to determine the position of at least one of the upper rollers 20 (here the input upper roller 21, the

The belt top roller 22 and the output top roller 23 are also referenced (unless explicitly designed otherwise or excluded by technical logic for a person skilled in the art) relative to the load carrier 16 or to the load arm 76 and thus relative to the drafting unit 10 when the receptacle 39 is arranged on the load carrier 16 or the

Load arm 76 is defined. This is shown accordingly in Figures 4 and 7. Figure 4 shows a schematic top view of the load beam 16 depicted in Figures 1 to 3, whereas Figure 7 shows a simplified schematic, incomplete representation of a bottom view of the load beam 16 depicted in Figures 5A to 6B, showing the components.

The load-bearing element 16 is shown according to a further embodiment. In this embodiment, the

Reference structure 61 may have a reference surface 62 which can be designed and arranged such that the recordings 39 with the respective upper roller 20 are relative to this

Reference surface 62 can be positioned. This can be done in particular by positioning a first or last upper roller 20 in the arrangement direction for the mounting 39.

The upper rollers 20 can be provided with a fixed and defined end position on the load carrier 16 or on the load arm 76. The corresponding end position can be determined by the

Reference structure 61 can be assigned, which can serve as a positioning reference for the upper rollers 20, the carriers 38, and the fixtures 39, respectively. The

Reference structure 61 shall be designed as reference surface 62, to which an adjacent - 28 -

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IP/MINJ508186 04.09.2024 recording 39 to be ordered for the plant can be accessed, in particular directly, alternatively indirectly

Using at least one calibration piece (not shown). When taking the correct or desired amount

Positioning the recording 39 in the direction of the fiber belt transport direction can thereby

Screw 74, as shown in Figures 1 and 2, must be tightened to achieve the desired result.

Positioning of the mounting 39 relative to a rail 25 to lock it in place. Since the corresponding load carrier 16 "brings along" its own reference structure 61, it is possible that an adjustment of the tensioning device 10 is sufficient for a requirement for use without a

Measuring is possible using a tool, such as a caliper.

According to a preferred embodiment, as shown in Figures 4 and 7, the

Reference structure 61 is designed as a projection in the load arm 76, in particular formed integrally with the load arm 76, and preferably chamfered. Alternatively, the reference structure 61 can be arranged and attached to the load arm 76. Alternatively, the reference structure 61 can also be arranged and attached to the base body 30 or formed integrally with it. The reference structure 61 has a

Reference surface 62, which according to this embodiment serves as a stop surface for the

The intake 39 serves as the mounting point for the output upper roller 23. The intake 39 further preferably has a

Reference counter surface 63, which is arranged and designed to be positioned against reference surface 62. Preferably, reference counter surface 63 is associated with a reference counter structure, which is formed by a recess, in particular a milled one.

Reference surface 63 as well as reference surface 62 point in the direction of the possible

Displacement direction of the recordings 39, which runs along the fiber belt transport direction.

In this embodiment, the reference surface 62 and the reference counter surface 63 are defined by a projection and a recess, the projection being formed on the load-bearing support 16 and the recess on the receptacle 39. It is understood that in an embodiment not shown, instead of the projection on the load-bearing support 16, a

A recess and a corresponding congruent projection can be formed at the inlet 39 without having to deviate from the described concept of relative positioning.

By moving the mounting 39 for the output upper roller 23 until the

Reference surface 63 on reference surface 62 enables precise positioning of the

The output upper roller 23 is reached at the load arm 76. After taking this

Positioning: The mounting 39 can be fixed and thus secured in precise position using screw 74. Positioning of the further mountings 39 for the belt upper roller 22, -29-

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IP/MINJ508186 04.09.2024 the upper roller 20 and the inlet upper roller 21 can be positioned in the same way, taking into account that a roller adjacent to the positioned upper roller 20, in the

The arrangement sequence is to position the next upper roller 20. The receptacles 39 of these upper rollers 20 can also have reference surfaces 62 and/or reference counter surfaces 63 to allow for the intermediate placement of calibration pieces, as described above. In particular, the receptacles 39 of the drafting unit 10 are designed in a similar, and preferably identical, manner, which simplifies the assembly of the drafting unit 10. In this context, it is preferred that the receptacles 39 are located on opposite sides of the rollers.

End faces, which point along the fiber belt transport direction, each one

Reference surface 63. Alternatively, it may be provided that at least one

The image 39 shows a reference surface 63 on an end face, which, for example, points in the fiber ribbon transport direction, and a reference structure 61, in particular a reference surface 62, on an end face facing away from it, which, for example, points in the opposite direction to the fiber ribbon transport direction. The arrangement of these can alternatively be reversed or interchanged.

Fig. 4 shows a top view of the embodiment from Fig. 2, indicating the

Adjustment ranges that are possible through the use of calibration blocks. This is possible because, for example...

Calibration pieces, which for example have a thickness between 20 mm and 5 mm, whereby the thickness may preferably also be in the range of 15 mm to 7 mm, are used, with corresponding distances set between the receptacles 39. In other embodiments,

Calibration pieces with a thickness, for example, between 12 mm and 9 mm, can be used.

Calibration pieces can deviate from each other in increments of 5 mm, particularly in increments of 2 mm, and further in increments of 1 mm, thus allowing for fine adjustments in the

Positioning of the respective recordings 39 can be made possible. In this context, for the upper rollers 20 located upstream of the output upper roller 23 along the fiber belt transport direction, in particular a total of three adjustment ranges, one adjustment range per upper roller 20, can be provided for an adjustable distance along the fiber belt transport direction.

Inlet field width 68, which according to this embodiment is assigned to the inlet upper roller 21, for an adjustable distance of a first intermediate field width 66, which according to this embodiment is assigned to the inlet upper roller 21 downstream in the fiber strip transport direction, and for an adjustable distance of a second

The center field width 64, which according to this embodiment is assigned to the belt upper roller 22. Although there is no adjustable distance to an initial field width, which is the - 30 -

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IP/MINJ508186 04.09.2024

The output upper roller 23 is shown, but such an adjustable distance can also be provided in an embodiment not shown. For example, a

The calibration piece is brought to the reference structure 61 or the reference surface 62, to which the receptacle 39 of the output upper roller 23 is brought into contact and thus positioned, and the receptacle 39 is then fixed by means of the screw 74.

Alternatively or additionally, a spring 24 can be arranged in a spring holder 42 by means of the receptacle 39 on the load carrier 16 and designed in such a way as to determine the position of the

Upper roller 20 after arranging the upper roller 20 on the mounting 39 in one direction towards the

The counter roller is loaded in a defined stretched state. The spring 24 can be used as a

The torsion spring 90 is designed as shown here by way of example. Figures 1, 2, 3A and 4 show, in particular, a situation as an example for better clarity, in which a second spring arm 48 of the spring 24 is in a position of a delivery condition FO of the

Load carrier 16 is present. Therefore, spring 24 is not tensioned here, in order to use it for a

To protect the delivery. An example of a setting is shown in Fig. 3B.

The setting of the second spring arm 48 in position F1 is shown. A person skilled in the art understands that the corresponding positions F1, F2, and F3 can be selected as needed, depending, for example, on the specific application, with each of these positions F1, F2, and F3 defining a clamping position for the spring 24. For the sake of clarity, the

Fig. 3B only indicates the FO position, but does not illustrate it in detail, with the FO-

Position, for example, as shown, a position of the second spring arm 48 in the

can correspond to verticals.

As shown in Fig. 3B and described in this respect, three different types of

Configurations for the spring 24 in a spring arm mount 49 of the spring holder 42 for the

Spring 24, in particular a torsion spring 90, is provided, indicated here as

Sectional view shown with dashed lines, inside. The viewing direction is indicated by small arrows in Fig. 3A for better understanding.

In particular, three spring arm mounts can be provided in a top view, as shown in Fig. 2, into which the second spring arm 48 can be arranged to form a

To create tension in the spring 24. The tension in the spring 24 can be greater the further the second spring arm 48 is from position FO in the delivery state when it comes to rest in positions F1 to F3. Demarcations between the

Spring arm mounts 49 for the spring 24 can prevent the spring 24 from slipping from a position -31-

ABO034LU

IP/MINJ508186 04.09.2024 to prevent movement into any other clamping position F1, F2, F3 or the starting position FO. According to this embodiment, the boundaries are designed as separating webs between adjacent

Spring arm mounts are designed. The respective spring arm mounts 49 thus have in a

The top or bottom view shows a U-shape. Alternatively, the spring arm mount 49 can also be C-shaped or otherwise designed, as long as the spring arm mount 49...

Allows for the insertion and removal of a spring arm.

The torsion spring 90 has a first spring arm 44 through which a load can be transmitted to the operatively connected upper roller 20. The receptacle 39 is designed for this purpose according to this

In an exemplary embodiment, the spring holder 42 is articulated such that it extends over the

The pivot joint 55 is rotatably connected to the support bracket 54 for holding the support 38, wherein the first spring arm 44 is operatively connected to the support bracket 54 or alternatively to the support 38 in order to press the upper roller 20 onto a (not shown) counter roller or lower roller. The first spring arm 44 can rest on the support bracket 54 or on the

Carrier 38 is held in place by spring pressure according to the selected clamping positions F1, F2, F3. The spring holder 42 is designed to hold the spring body 43 of the torsion spring 90.

Fig. 3A shows a schematic sectional view through the embodiment, which is depicted in a perspective side view in Fig. 1 and in a top view in Fig. 2. It can be seen in particular that the receptacle 39 has the spring holder 42, in which the

The spring body 43 of the spring 24 or the torsion spring 90 is arranged. The first spring arm 44 is arranged in a moving part 40 of the support bracket 54, which has a

The joint connection 55, as shown in Fig. 1, can be moved in order to relieve the tension or spring tension force introduced by the tension position F1, F2, F3 via the second spring arm 48 by the first spring arm 44, through the at least partial discharge of the tension or spring tension force.

Spring tension force, to release again. This allows a defined load to be applied to the upper roller 20 in order to generate a defined clamping force with the associated lower roller (not shown). The support 38 is arranged in the receptacle 39, which extends up to a

Contact area 41 can be inserted into the receptacle 39. This allows for the insertion of a [unclear - possibly a reference to a specific element or process].

The pressure piece 46 provided for in the receptacle 39 engages in a groove 47 on the support 38 to lock it in place. This allows the upper roller 20, which is rotatably mounted on the support 38 in bearings 52 (which can be conventional roller bearings), to be positioned at a defined relative distance from the receptacle 39. Here, too, the load carrier 16 with -32-

ABO034LU

IP/MINJ508186 04.09.2024 of its recording 39 a corresponding own reference system to access external

to be able to do without measurements and/or tools. It may be provided that...

Pull in a direction of pull 50 parallel to an extension of the longitudinal axis of the support 38, a

The locking force of the pressure piece 46 can be overcome, allowing the upper roller 20, together with the carrier 38, to be removed from the receptacle 39, particularly without the use of tools. The pressure piece 46 can, in particular according to a preferred design, be used for this purpose.

The embodiment is held in the receptacle 39 under spring tension.

For easy handling of the spring 24 from an upper surface of the load arm 76, the latter includes in particular a first and second recess 57, 58, via which the receptacles 39 can be fixed to the load arm 76 on the one hand, and on the other hand the spring 24, each supported by a receptacle 39, can be handled from an upper surface of the load arm 76.

Handling of the spring 24 is made possible via the first recess 57, through which the

spring arm mount 49 protrudes through it. The first recess 57 is located according to this preferred

This embodiment is realized by an elongated hole in the load arm 76. The elongated hole is dimensioned such that the spring arm receptacle 49 can protrude through it and be guided along the elongated hole. The second recess 57 is parallel to and adjacent to the first recess 57.

Recess 58 is arranged, the second recess 58 also being designed as an elongated slot. This forms the rail 25 between the first and second recesses 57, 58. A respective receptacle 39 can be inserted via the second recess 58 by means of

Fasteners such as the screws 74 are fixed in a desired position. The screws 74 can also be accessed from the top of the load-bearing arm 76.

Fig. 5A shows a schematic representation of another embodiment of a

Load carrier 16 with upper rollers 20. Particular attention is paid to the differences in

A comparison has been made with the embodiments shown and described in Figures 1 to 4. The springs 24 can be designed as compression springs 80. A spring 24 or a compression spring 80 can be arranged to pre-tension at least one associated upper roller 20 by means of a linear stress transmission, as shown and described by way of example in Figure 5C. Figure 5B shows a schematic perspective side view of the embodiment of the load carrier 16 with upper rollers 20 from Figure 5A. The design of the alternative locking mechanism 31 is particularly evident in this view. Any optionally arranged

Extraction devices 36 including holders for the hoses 34 and the funnel elements 34A, -33-

ABO034LU

IP/MINJ508186 04.09.2024 as well as the hoses 34, are not shown for the sake of clarity, but can be implemented in the same way as in the embodiment described above.

According to this embodiment, the load carrier 16 is designed in two parts: the base body 30 and the load arm 76 fixed to the base body 30. As shown, the fixing can be achieved, in particular, by means of a screw connection. Alternatively, preferably, the

Attachment of the load arm 76 to the base body 30 by means of other conventional means

Fastening methods include force-fit, form-fit and/or material-fit.

The load arm 76 according to this embodiment has a locking mechanism 31 which is functionally identical to the one described above. Thus, by moving the locking mechanism 31, for example by actuating the handle 32, it is possible to lock it by the gripper 33 engaging in a corresponding counter-structure (not shown). The locking mechanism 31 allows, in particular by moving the handle 32 in a different direction, the locking mechanism 31 to be released in order to move the upper rollers 20 and lower rollers into state Z2, as shown in part in

As shown and described in Fig. 6B, they are to move away from each other. Through the

Movement of the handle 32 allows the lever 35, to which the handle 32 may be connected, to move the gripper 33 out of engagement with the counterpart, in order to release the locking mechanism 31 and thus the

to release load carrier 16 or load arm 76. This allows the

The load carrier 16 and thus the drawing unit 10 are opened, whereby the load arm 76 can be moved, in particular by a pivoting movement of the base body 30 with the load arm 76 about the bracket 28 of the textile machine, wherein the bracket 28 can form a bearing 37, such that the upper rollers 20 and lower rollers are moved away from each other. In the illustrated exemplary embodiment, the upper rollers 20 are thus lifted off the lower rollers.

The locking device 31 is, in particular, arranged closer to the output upper roller 23 than to the input upper roller 21, in contrast to the exemplary embodiments shown and described in Figures 1A to 4, especially at the free end face of the load arm 76. The free end face of the load arm 76 can have a bracket 28 for the rotatable mounting of the lever 35, wherein the bracket 28 is connected to the lever via a joint 60 so that the lever 35 can rotate about the joint axis relative to the

The load arm 76 is movable. The front-facing arrangement promotes a more reliable [result].

Locking of the load arm 76, thereby forming a particularly rigid structure “34 -

ABO034LU

IP/MINJ508186 04.09.2024, which more strongly fixes the relative position of the upper rollers 20 and lower rollers to each other, compared, for example, with the embodiments of Figs. 1A to 4.

According to this preferred embodiment, it can be provided in particular that the

The basic body 30 forms a reinforced structure, for example by having more material.

Alternatively or additionally, a bearing 19 can be formed around the bearing 37, which encompasses the support 28. This bearing 19 can represent a material reinforcement of the base body 30, which can also move along with the load arm 76 when it pivots. As described elsewhere, a portion of the bearing 19, in particular as part of the

The base body 30 of the load carrier 16 may be a pivotable part 72 of a pre-compressor 70. This pre-compressor 70 may have a fiber belt nozzle 75 as an extension 73 of the pre-compressor 70. The fiber belt nozzle 75 can be attached to the pre-compressor 70 in a tool-free and non-destructive manner, for example by means of a snap-fit and/or clip connection. The pre-compressor 70 may thus have an opening into which a front end of the

The fiber tape nozzle 75 can be used for snap-fit connections. For this purpose, locking tabs can be formed on the end face of the fiber tape nozzle 75, which, after insertion into the

Opening on one of the upper rollers 20 on the side of the pre-compressor 70 facing away from the

Grasp the opening edge. The interchangeability allows the use of differently sized fiber tape nozzles 75, which can be adapted to the fiber tape being processed and/or the yarn to be produced from it.

According to this preferred embodiment, the pre-compressor 70 further accommodates a permanently fixed part 71, which is formed in a part of the holder 28. With other

In other words, the bracket 28 at the location of the pre-compressor 70 is designed with a fiber belt guide section comprising the permanently fixed part 71, which

The functional part of the pre-compressor 70 is formed in its installed state on the bracket 28. The permanently fixed part 71, or the fiber belt guide section, is present in this case.

Exemplary embodiment trough-shaped and extending over a predefined surface section of the

Holder 28 is designed to ensure reliable guidance of the fiber tape from a spinning can (not shown) located below the load-bearing support 16. The trough-like shape can be designed and adapted to the fiber tape feed.

When the base body 30 with the pre-compressor 70 moves around the holder 28 in -35-

ABO034LU

IP/MINJ508186 04.09.2024

In the direction of state Z2, this permanently fixed part 71 or the

The fiber tape guide section is not included, resulting in a relative movement of the opening of the

The pre-compressor 70 comes to the permanently fixed part 71 in such a way that an over the

The pre-compressor 70 guided fiber belt is clamped in the open state of the load carrier 16 to prevent the fiber belt from slipping out during a measure on the

to reliably prevent the stretching mechanism 10.

Fig. 5C shows a sectional view through the embodiment of Figs. 5A and 5B. As an alternative to the embodiment according to Figs. 1 to 4, a compression spring 80 is shown as spring 24 instead of the torsion spring 90, in order to increase the preload of the upper rollers 20 relative to the

To be able to adjust the lower rollers. For this purpose, for example, a spiral spring body 82 in a

Spring housing 84 is arranged to press a pressure plunger 86 onto the support 38 in order to push the upper roller 20 arranged on the support 38 downwards onto the associated counter roller such as the lower roller, possibly with an intermediate belt as in a

to press the belt roller pair. The pressure can be transmitted via a pivot joint 55, as described elsewhere. The spring housing 84 can be arranged in a spring holder 88. In particular, a spring upper part 85 is designed and arranged to be guided in the spring housing 84, wherein a

The guide device (not shown) is designed to fit into a recess 87 of the

spring housing 84 is guided in such a way that different preloads of the

Compression spring 80, shown here by way of an example through a first clamping position F1 or a second

Clamping position F2 can be selected. The guide device can be positioned vertically.

The rail, which is arranged here on the cutting plane, is guided when a

The pressure movement of the spiral spring body 82 is compressed or decompressed by the

The upper part of the spring is pushed 85 deeper or moved outwards. By a rotational movement (or a sideways movement in other preferred embodiments), the

The guide device is moved into horizontal recesses to position the respective first

To be able to select and define clamping position F1 or second clamping position F2. A relaxed position is preferably indicated by FO if the

The coil spring body 82 is maximally relaxed and the spring top part 85 is thus maximally deflected upwards.

Furthermore, according to this embodiment, the printing die 86 can engage in a recess such as a groove of the carrier 38 in order to position the carrier 38 within the receptacle 39 without the - 36 -

ABO034LU

IP/MINJ508186 04.09.2024

The use of a pressure piece 46 as described above to axially fix the pressure piece 46 allows the same advantages to be achieved as described above in connection with the pressure piece 46. This also enables a simpler design of the receptacle 39. Furthermore, in the preferred position FO, the compressive force of the compression spring 80 can be provided such that a

Removing the carrier 38 is simplified by overcoming a small remaining compression spring force. Removing the carrier 38 is of course also possible in the

Clamping positions F1 and F2 are possible, however, the corresponding compression spring force is required.

Overcoming tensile force.

Fig. 6A shows a side view of an exemplary embodiment of the load carrier 16 with upper rollers 20 of Figures 5A and 5B in a closed, in particular locked, position, corresponding to the closed, locked state Z1. Fig. 6B shows a schematic

Side view of the exemplary embodiment of the load carrier 16 with upper rollers of figures 5A and 5B in an open position Z2, which is achieved by transition by means of

Pivoting of the load arm 76 together with the base body 30 and the bearing 19, and a resulting rotation around the bearing 37 of the bracket 28, takes place. In the closed locked state Z1, the pivotable part 72 with the permanently fixed part 71 forms a largely linear guide structure for the pre-compressor 70 for guiding the fiber belt, in order to guide and, in particular, pre-compress the fiber belt.

Pre-compression can be achieved by positioning the pre-compressor 70° along the

The fiber belt transport direction forms a tapered guide structure, in other words the opening width of the pre-compressor 70 decreases steadily or in steps along the fiber belt transport direction.

Opening the load carrier 16 or moving it in the direction of the state

Z2, or more generally, an open position, allows for an angled position between the permanently fixed part 71 and the pivotable part 72. The pivotable part 72 can be formed, at least partially, in at least one component such as the bearing 19 (here the exemplary case), the base body 30, or the load arm 76. The angled position causes the component guided by the pre-compressor 70 to be clamped.

Fiber belt to prevent the fiber belt from slipping out of the pre-compressor 70.

As also shown by way of example, the extension 73 can be formed, which - 37 -

ABO034LU

IP/MINJ508186 04.09.2024 is designed in particular as a fiber tape nozzle 75, the fiber tape from the remaining

to lead out components of the pre-compressor 70 in order to guide the fiber belt in

Direction of the pulley 10 in an operating position (closed and locked state)

to extend Z1) and to stabilize the fiber belt, particularly during movement towards the drawing unit 10. Furthermore, this enables targeted guidance of the fiber belt in

Direction of the first upper roller 20 or the input roller 21. The fiber belt nozzle 75 can preferably have an opening width that tapers along the fiber belt transport direction, as shown, in order to achieve further compaction of the fiber belt in a defined manner depending on the selected opening diameter of the fiber belt nozzle 75.

The term "may" refers in particular to optional features of the invention. Accordingly, there are also further developments and/or embodiments of the invention that additionally or alternatively include the respective feature(s).

Isolated features can also be derived from the combinations of features disclosed herein, if required.

Features were selected and, by dissolving any structural and/or functional relationship that may exist between the features, combined with other factors.

Features are used to delimit the subject matter of the claim. “38 -

ABO034LU

IP/MINJ508186 04.09.2024

Reference symbol list

Stretcher 54 Support bracket 16 Load carrier 55 Swivel joint 19 Bearing 56 Joint rod

Top roller 57 first recess 21 Inlet top roller 58 second recess 22 Belt top roller 60 Joint 23 Outlet top roller 61A first reference structure 24 Spring 61B second reference structure

Rail 62 Reference surface 28 Bracket 63 Reference counter surface

Base body of the load carrier 64 adjustable distance of a second 31 locking mechanism center field width 32 handle 66 adjustable distance of a first 33 gripper center field width 34 hose 68 adjustable distance of a 34A funnel element input field width

Lever 70 Pre-compressor 36 Suction device 71 Permanently fixed part of the 37 Bearing pre-compressor 38 Support 72 Swiveling part of the 39 Mounting pre-compressor

Moving part 73 Extension of the pre-compressor 41 Contact area 74 Screw 42 Spring holder 75 Fiber belt nozzle 43 Spring body 76 Load arm 44 First spring arm 77 Funnel 46 Pressure piece 78 Funnel outlet 47 Groove 79 Fiber belt feed 48 Second spring arm 80 Compression spring 49 Spring arm mount 82 Coil spring body

Direction of pull 84 Spring housing 52 Bearing 85 Spring top -39-

ABO034LU

IP/MINJ508186 04.09.2024 86 Pressure stamp FO Relaxed state 87 Recess F1 First clamping position 88 Spring holder F2 Second clamping position 90 Torsion spring F3 Third clamping position 91 Holding device L Longitudinal axis of the holder 92 Clip device Z1 Closed, locked state 93 Clip element Z2 Open state - 40 -

Claims (19)

ABO034LU IP/MINJ508186 September 4, 2024 Patent claims 1. Load carrier (16) for upper rollers (20) of a drafting unit (10) of a textile machine, comprising at least one receptacle (39) with a support (38) for receiving at least one of the upper rollers (20), characterized in that the load carrier (16) has a base body (30) pivotable about a holder (28) for the load carrier (16) and a load arm (76) connected thereto, wherein the at least one receptacle (39) is positionable on the load arm (76), and the base body (30) is designed and arranged to receive at least one part of a pre-compressor (70), in particular, wherein the pre-compressor (70) is designed to pre-compress the fiber strip to the upper roller (20) first arranged on the load carrier (16) in the fiber strip transport direction. 2. Load carrier (16) according to claim 1, characterized in that the load carrier (16) is pivotably arranged about the support (28) and the support (28) forms a permanently fixed part (71) of the pre-compressor (70). 3. Load carrier (16) according to claim 2, characterized in that the pre-compressor (70) has a pivotable part (72) which is designed and arranged on the base body (30) in such a way as to be moved with the base body (30) when transitioning to a position corresponding to an open state (Z2) of the load carrier (16) and in a further position corresponding to a closed state (Z1) of the load carrier (16), to fully form the pre-compressor (70) with the permanently fixed part (71) of the pre-compressor (70) on the load carrier (16) in order to guide the fiber belt unhindered through the permanently fixed part (71) into the pivotable part (72) of the pre-compressor (70). 4. Load carrier (16) according to one of the preceding claims, characterized in that the pre-compressor (70) has an extension (73), in particular a fiber belt nozzle (75), which forms a final component of the pre-compressor (70) in the fiber belt transport direction. - 41 - ABO034LU IP/MINJ508186 September 4, 2024 5. Load carrier (16) according to claim 4, characterized in that the extension (73) is arranged on the pre-compressor (70) in a way that allows for tool-free replacement. 6. Load carrier (16) according to one of the preceding claims, characterized by a first reference structure (61A) on the load carrier (16), and a second reference structure (61B) on the at least one receptacle (39), wherein the first (61A) and second reference structure (61B) are designed and arranged to define the position of the at least one receptacle (39) relative to the load carrier (16) when the at least one receptacle (39) is arranged adjacent to the first reference structure (61A). 7. Load carrier (16) according to claim 6, characterized in that the first reference structure (61A) has at least one, in particular milled, reference surface (62) as a stop and the second reference structure (61B) has at least one, in particular milled, reference counter surface (63) as a counter stop. 8. Load carrier (16) according to claim 7, characterized in that the reference surface (62) and the reference counter surface (63) are configured to define a positioning of the at least one receptacle (39) by mutual contact of the reference surface (62) and the reference counter surface (63) when arranging the at least one receptacle (39) and/or to define a positioning of the at least one receptacle (39) by interposing a calibration piece when arranging the at least one receptacle (39), wherein the calibration piece is configured to be arranged between the reference surface (62) and the reference counter surface (63) and to come into contact with them in order to define the position of the at least one receptacle (39) relative to the load carrier (16). 9. Load carrier (16) according to claim 7 or 8, characterized in that one of the first and second reference structures (61A, 61B) is designed as a projection, wherein an end-face projection surface, which points in the direction of the fiber belt transport direction or against this direction, forms the reference surface (62) or the reference counter-surface (63), and that the other of the first and second reference structures (61A, 61B) forms a recess congruent to the projection for receiving the projection, “42 - ABO034LU IP/MINJ508186 04.09.2024 wherein a frontal recessed surface points towards the projection surface and accordingly forms the reference counter surface (63) or the reference surface (62), wherein the reference surface (62) and the reference counter surface (63) are in particular designed to come into contact with each other for positioning the at least one receptacle (39) or with the insertion of a calibration piece, wherein the calibration piece is designed to be arranged between the reference surface (62) and the reference counter surface (63) and to come into contact with them in order to set the position of the at least one receptacle (39) relative to the load carrier (16) in a defined manner. 10. Load-bearing structure (16) according to one of the preceding claims, characterized by at least two receptacles (39), wherein each of the receptacles (39) has a second reference structure (61B) and one of the two receptacles (39) has either a further second reference structure (61B) or a first reference structure (61A), wherein the second reference structure (61B) is formed and arranged at one of the at least two receptacles (39) to define the position of this one receptacle (39) relative to the load-bearing structure (16) when this one receptacle (39) is arranged adjacent to the first reference structure (61A), and the second reference structure (61B) is formed and arranged at the other of the at least two receptacles (39) to define the position of the other receptacle (39) relative to the already positioned one receptacle (39) or relative to the load-bearing structure (16) when this other receptacle (39) is arranged adjacent to the first reference structure (61A) or further second reference structure (61B) of the already positioned one receptacle (39). to define. 11. Load carrier (16) according to claim 10, characterized in that at least one calibration piece is assigned to the load carrier (16) and is designed to be arranged between the reference structures (61A, 61B) of two adjacent receptacles (39) and to come into contact with them in order to set the position of one receptacle (39) relative to the other adjacent, already positioned receptacle (39) or relative to the load carrier (16) in a defined manner. 12. Load carrier (16) according to one of the preceding claims, characterized by at least one recess (57) extending along a fiber belt transport direction of the drawing device (10) laterally bounded by a rail (25), wherein the at least one receptacle (39) is provided by means of the at least one recess (57) and the “43 - ABOO34LU P/MNU508186 04.09.2024 Rail (25) can be fixed to the load carrier (16) along the fiber belt transport direction after assuming a defined position. 13. Load carrier (16) according to one of the preceding claims, characterized by a spring (24) arranged in a spring holder (42) on the load carrier (16) and designed to load an upper roller (20) in a defined direction of contact of the upper roller (20) after arrangement on the support (38) of the receptacle (39) away from the load carrier (16), wherein the direction of contact is the direction along which the upper roller (20) is provided to come into contact with an associated lower roller of the drafting unit (10) by means of pressure contact for the fiber strip transport. 14. Load carrier (16) according to claim 13, characterized in that the spring holder (42) has at least two clamping positions (F1, F2, F3) for adjusting the load on the upper roller (20). 15. Load carrier (16) according to claim 13 or 14, characterized in that the spring (24) is a torsion spring (90), wherein one spring arm (48) can be arranged without tools between the at least two clamping positions (F1, F2, F3), and wherein the other spring arm (44) is arranged to apply a spring force to the carrier (38), in particular directly; or that the spring (24) is a compression spring (80), designed and arranged to apply a compressive force, in particular directly, to the carrier (38). 16. Load carrier (16) according to one of the preceding claims 13 to 15, characterized in that the carrier (38) and the receptacle (39) are connected to each other via a rotary joint (55) in order to move the upper roller (20) following the load of the spring (24). 17. Load carrier (16) according to one of the preceding claims, characterized in that a pressure piece (46) in the receptacle (39) is designed and arranged such that it positions the carrier (38) on the receptacle (39), in particular locking it, further in particular by engaging in a groove (47) of the carrier (38). 18. Load carrier (16) according to one of the preceding claims, thereby - 44 - ABOO34LU P/MNU508186 04.09.2024 characterized in that the load carrier (16) has a locking mechanism (31) which is designed and arranged to move the load carrier (16), in particular by a pivoting movement about a support (28), between a closed state (Z1) and an open state (Z2) and to lock it in the closed state (Z1) on the drawing unit (10) or on the textile machine, wherein the locking mechanism (31) is located either downstream of a last receptacle (39) or upstream of a first receptacle (39) in the fiber belt transport direction. 19. Stretcher (10) comprising at least one load-bearing element (16) according to one of the preceding claims. - 45 -