JP7337584B2 - A support frame for a drafting device unit and a drafting device including such a drafting device unit - Google Patents

Description

The invention provides a support frame for a drafting device unit for drafting slivers in a working unit of a textile machine and a drafting device including such a drafting device unit with a load support having at least one top roller. Regarding.

Draft devices for textile machines are known in various configurations from the prior art. The drafting device serves to draft or draw the fiber bundles, thereby reducing the cross-section of the fibers. During drafting, the fibers are displaced with respect to each other as uniformly as possible, so that a fiber bundle that is as uniform as possible can be achieved.

For drafting the slivers, the drafting device usually has several roller pairs arranged one behind the other. These roller pairs are placed in contact with each other to sandwich the fiber slivers extending therebetween. The roller pair in this case consists of a bottom roller, which is normally driven, and an upper pressure roller which contacts this bottom roller. This upper pressure roller is rotatably held by a load support. Drafting of the slivers is achieved by increasing the peripheral speed from roller pair to roller pair in the conveying direction of the slivers defined by the direction of rotation of the roller pairs.

In a drafting device unit, a load carrier of the type mentioned at the outset serves to press an upper pressure roller or top roller arranged on this load carrier against a correspondingly arranged bottom roller with a predetermined pressure, Thereby, the top rollers are pressurized in the running position to rest on the corresponding bottom rollers. A drafting device unit for a textile machine of the type mentioned at the outset is a structural group of drafting devices for textile machines. Depending on its configuration, the drafting device unit can also be designed as a complete drafting device.

Known textile machines have a separate drafting device with a plurality of roller pairs arranged side by side for each working unit for each slivers to be drafted. A load carrier is assigned to a plurality of roller pairs. The drafting device is usually integrated into the textile machine so that only the friction part can be easily maintained and possibly replaced by the operator.

Maintenance or repair work, such as, for example, continuous cleaning, periodic inspections or troubleshooting and matching of roller pairs to the yarn material to be drafted, can be carried out with the drafting device installed in the textile machine. shall be carried out in Adjacent work units and adjacent equipment make such work difficult.

Starting from this, the problem underlying the present invention is to improve a drafting device unit for drafting slivers in a working unit of a textile machine so that it can be inspected, repaired and serviced in a user-friendly manner. and/or to be able to adapt to the slivers material to be drafted.

The invention solves the problem by a support frame for a drafting device unit with the features of claim 1 and by a drafting device with the features of claim 12 . Advantageous variants of the support frame or drafting device are described in the dependent claims. The textile machine is preferably a spinning machine for drafting fiber bundles, such as a ring spinning machine, a flyer, an air spinning machine or the like.

It is characteristic of the support frame according to the invention that it has connecting sections and locking units for detachable connection of the support frame to the textile machine, in particular to the associated working unit. There is The configuration of the support frame with the connecting sections and the locking unit permits a comfortable and modular arrangement of the support frame on the textile machine and enables it to be precisely positioned and fixed in the operating position via the locking unit. enable By unlocking the locking unit, the drafting device unit can be removed or removed from the textile machine or working unit in a comfortable manner if required.

The support frame preferably engages corresponding receiving sections provided on the textile machine or on the working unit via connecting sections and locking units. In the operating position, the locking unit has at least one top roller and ensures a fixed arrangement of the load carrier pivotally mounted on the support frame. This ensures reliable operation of the drafting device with this drafting device unit. Maintenance and adjustment work on the load carrier and the adaptation of the pressure roller to the sliver material to be drafted can be carried out in a comfortable manner at a suitable work place after simple removal of the load carrier. Furthermore, a support frame or a drafting device unit including such a supporting frame can be replaced in a simple and inexpensive manner by a new, adapted or modified supporting frame or drafting device unit, thereby for example existing drafting devices. Improvements can be made simply through replacement of an improved drafter unit.

The arrangement of the drafting device unit on the textile machine or working unit as well as the removal of the drafting device unit from the textile machine or working unit can basically take place in any desired manner. For example, arrangements are possible in which the support frame or the drafting device unit can be moved linearly between the release position and the operating position. In this case, in the release position the drafting device unit is arranged on the textile machine and can be removed from it, in the operating position the support frame or the drafting device unit and the associated drafting device in the operating state. placed in some cases.

However, according to an advantageous variant of the invention, a connecting section for placement in the receiving section of the textile machine or working unit is formed for moving the support frame between the release position and the operating position. It is stipulated that there is In this case, in the release position the support frame or the drafting device unit can be removed from the associated working unit, and in the operating position the support frame or the drafting device unit operates the load carrier supported on the support frame. For this purpose, it is fixedly arranged in a correspondingly assigned working unit. According to this configuration of the invention, it is provided that the support frame is first placed for installation in a correspondingly formed receiving section of the textile machine. From this release position, the movement of the support frame to the operating position takes place via a corresponding configuration of the coupling section, independently of the configuration of the receiving section. In this operating position, the drafting device unit is then fixed on the textile machine or on the working unit via the locking unit.

This configuration of the coupling section for moving the support frame between the release position and the operating position requires a corresponding adaptation of the textile machine or the working unit to the coupling section or a special configuration of the receiving section taking into account the shape of the coupling section. Allows configuration to be omitted. With this variant of the invention, the basic mobility of the support frame already occurs due to the configuration of the connecting sections. The coupling section ensures, first and foremost, sufficient support of the drafting device unit on the textile machine via the receiving section. A possible and preferred configuration of this variant of the invention is, for example, that the connecting section is pivotally connected to the support frame so that the movement is independent of the configuration of the receiving section and the corresponding movement of the support frame. It specifies what is achieved by the configuration.

As mentioned above, the basic configuration of the connection between the support frame or the drafting device unit and the receiving section provided on the textile machine via the connecting section is basically freely selectable. However, an advantageous configuration of the invention provides that the coupling section has a recess in the receiving section, in particular adapted to frame stays of textile machines. This configuration allows a particularly simple and inexpensive construction and production of the support frame, in which case the preferably cylindrical configuration of the frame stay can be combined with the release position if the recesses are correspondingly configured. Allows particularly easy mobility of the drafting device unit to and from the operating position.

The recesses which are advantageously provided for arranging the support frame or the drafting device unit in the frame stay can in principle be formed by any element, for example a flange arranged on the support frame. The flange may be provided with a corresponding notch. However, according to a particularly advantageous configuration of the invention, it is provided that the recess is formed integrally with the support frame. Forming the recess in the support frame makes it possible to dispense with additional components, which additionally reduces the manufacturing costs for the support frame. Furthermore, the integral configuration of the cutouts in the support frame has weight advantages over the use of complementary components and the use of multiple cutouts.

The construction of the locking unit for fixing the support frame or the drafting device unit in the operating position on the textile machine or on the working unit can basically take any form. For example, it is also possible to use magnetically or electrically acting locking elements in the support frame, which in the operating position cooperate with corresponding components provided on the textile machine. However, in an advantageous variant of the invention, the locking unit is engageable in a locking catch provided on the textile machine in the operating position of the support frame, which is movable between an open position and a locked position. It is stipulated that it has a strong locking body.

Such a construction of the locking unit has a particularly simple and thus inexpensive and fault-proof construction. A locking body provided on the locking unit of the support frame is movable between an open position and a locked position, in which the locking body engages a corresponding locking catch provided on the textile machine. is located in engagement with the In this position, the form-fitting formed by the locking body and the locking catch provides a secure positional fixation of the support frame or the drafting device unit on the textile machine. To release the drafting device unit, it is sufficient to simply dislodge the catch from the catch, so that the support frame can be moved from the operating position into the release position. The construction of the locking body and the corresponding construction of the locking catch are basically freely selectable. Thus, for example, locking hooks or pins surrounded by locking hooks, which can be engaged in corresponding locking holes, can also be used. The locking body can be designed as a displaceable locking pin which engages in a corresponding locking pin receptacle in the locked position.

According to another embodiment of the invention, it is further provided that the locking body is preloaded in the direction of the locked position. A corresponding configuration of the invention ensures that the drafting device unit is automatically locked in the operating position by means of a catch preloaded towards the locking position after moving from the release position to the operating position. . Unlocking due to error conditions or operating errors is thus reliably prevented. If it is necessary to remove the support frame, it is simply necessary to move the locking body against the preload into the open position, thereby permitting a simple movement of the support frame from the operating position to the release position. , the subsequent removal of this support frame from the textile machine.

The support frame has at least one bearing point for the pivotable bearing of the load carrier assigned to the drafting device unit. The load support can rotatably retain at least one top roller. Furthermore, according to a preferred variant of the invention, the support frame is arranged in the support frame, in particular according to an advantageous variant of the invention, for accommodating at least one additional unit, a drive unit of the bottom roller, a communication unit. and/or to arrange the control device of the drive unit.

A possibility of arranging a further assembly of the drafting device on the support frame is to arrange the drafting device unit in a totally modular and flexible manner via the support frame on the textile machine or on the correspondingly arranged working unit. Alternatively, it is possible to form one complete drafting device which can be removed from the textile machine or the associated working unit. Furthermore, another preferred configuration of the support frame with mounting rails for accommodating the at least one additional unit supports the at least one additional unit in a simple manner, for example via a standardized configuration of the mounting rails. It offers the possibility to place it in a frame, move it and remove it from this support frame again. The high flexibility thus obtained allows for inexpensive maintenance and simple replacement of individual additional units if necessary. This additional unit may be a bottom roller associated with the top roller.

The connection of the drafting device unit, in particular the electronic unit or units arranged on the support frame, to the correspondingly arranged control unit can be achieved in a simple manner via a cable connection or alternatively by wireless data transmission. may be formed by a communication unit configured for The data transmission can take place by means of the control of the working unit, by a central control of the entire textile machine or by a higher-level control which controls several textile machines.

According to a further embodiment of the invention, it is provided that the support frame is provided with two bearing points for each pivotable bearing of the load carrier. The load carriers are designed in particular for supporting at least one top roller between the load carriers. In contrast to the load carriers known from the prior art, in which the top rollers arranged next to each other are connected to each other via a web loaded by the load carriers, the top rollers are arranged between the load carriers. The arrangement enables a particularly uniform transmission of the pressure of the top roller to the correspondingly arranged bottom roller. This is because the loading force acts on the top rollers on both sides and not on the center of the web extending between the two top rollers. A uniform pressure distribution ensures a uniform movement of the fibers relative to each other during drafting in a particularly advantageous manner, so that a particularly uniform fiber bundle can be formed.

According to a further preferred embodiment of the invention, provision is made for the support frame to have operating elements, in particular grip elements. The use of manual control elements, which may be designed, for example, to accommodate suitable manual control tools, involves simply removing the support frame from the textile machine or operating unit or placing it on the textile machine or operating unit. enable In a particularly simple configuration, the manual operating element is designed as a grip element. This gripping element enables the operator to grasp the support frame in a particularly secure manner and move it between the operating position and the release position. The arrangement of the one or more gripping elements can take account of the operating forces that occur and can thus allow simplified handling.

It is characteristic for a drafting device according to the invention with a drafting device unit having a load carrier with at least one top roller that the drafting device unit comprises a support frame according to one of the preferred embodiments described above. on which the load carrier is pivotally mounted.

A correspondingly configured drafting device can be arranged in a simple and comfortable manner on the textile machine and can be removed from the textile machine by virtue of the arrangement of the drafting device unit on the support frame. Better yet, it can be removed again. This makes it possible to carry out maintenance and repair work as well as adjustment and fitting work in a comfortable manner at separate work points away from the textile machine. At this work point there is good access to the entire assembly of drafting device units. The drafting device unit can, inter alia, be assembled and dismantled again in a particularly time-saving manner, so that cleaning operations can be carried out quickly and thus downtime of the textile machine can be reduced. A replacement of the drafting device is also possible in a simple manner, so that correspondingly trained personnel who would otherwise be required for the replacement can be dispensed with.

According to a preferred embodiment, the support frame is arranged with two load carriers with at least one top roller located between them, for example according to the embodiments described above by way of example. Both load carriers can be connected or are connected to each other via one gripping element. The gripping elements extend, in particular parallel to the top roller, from one load carrier to the other load carrier, or are arranged in this way on the load carriers and are detachably attached. you can One such common gripping element in a simple form with reduced components is the removal of the drafting device unit or drafting device from the textile machine or working unit and the drafting device unit or drafting device on the working unit or textile machine. Allows placement of the drafting device. The detachable arrangement and mounting of the gripping elements allows further component reduction. The gripping elements are thus guided together by the operator and can be placed and mounted on the drafting device when performing a procedure. Such mounting can be form-locked or force-locked in the usual way. Furthermore, the common gripping element may take measures such as cleaning one or more top and/or bottom rollers or other measures that do not require removal of the drafting device unit or drafting device from the textile machine or work unit. For implementation, it is made possible that the load carriers in the operating position of the support frame can be pivoted together in the usual manner into a position spaced from the bottom roller. This further simplifies the operability.

According to a further preferred embodiment, the drafting device is constructed as a removable drafting device module that can be arranged on the working unit. For this purpose, in the exemplary form described above, at least one load carrier with at least one top roller, a bottom roller associated with the at least one top roller, and a rotary drive of this bottom roller A drive is arranged on the support frame. The drive can be connected to the controller in a cabled or wireless manner. Further preferably, a control device for driving the bottom roller can be arranged on the support frame and can in particular be connected to the drive device.

Embodiments of the invention are described below with reference to the drawings.

1 is a perspective view of a spinning unit of a textile machine with an associated drafting device in the operating position; FIG. FIG. 2 is a perspective view showing the spinning unit and drafting device shown in FIG. 1 in a position where the drafting device is taken out; FIG. 2 is a side view of the spinning unit and drafting device shown in FIG. 1 in the operating position of the drafting device;

1 and 3 show the drafting device 2 associated with the spinning unit 1 in its operating position. In this operating position the drafting device 2 is fixed with respect to the spinning unit 1 . The spinning unit 1 and the drafting device 2 form one working unit of a textile machine (not shown) having a number of working units arranged side by side.

In the operating position illustrated in FIGS. 1 and 3, the slivers (not shown) supplied to the drafting device 2 are fed by a total of four roller drives, each consisting of a top roller 7 and an associated bottom roller. and is supplied to the spinning nozzle 10 of the spinning unit 1.

A bottom roller driven by an individual drive 8 and a top roller 7 arranged on two parallel-running load carriers 6 are arranged on the support frame 3 . A load support 6 is pivotally connected to the support frame 3 . The support frame 3 has two lateral elements 15 each having a recess 5 .

For assembling the drafting device 2, which is shown in the disassembled position in FIG. , of the textile machine, on the support tube 4 forming the receiving section. Starting from this release position, the drafting device 2 is pivoted about the support tube 4 to bring the drafting device 2 into operation, as shown in FIGS. up to the operating position where In the operating position, a locking hook 12 connected to the lateral element 15 , which is arranged on the end of the lateral element 15 of the support frame 3 facing away from the recess 5 , engages the spinning unit 1 . , wherein the locking hook opening 14 partially surrounds the rod-shaped locking hook receptacle 13 .

Via the locking hook 12 and the locking hook receiving portion 13, the drafting device 2 is arranged such that the drafted fiber bundle reliably reaches the spinning nozzle 10 of the spinning unit 1 from the drafting device 2. 1 is aligned. The control device 11 is arranged on the underside of the support frame 3 . The control device 11 is linearly displaceably mounted on the support frame 3 on guide rails (not shown) which are fixed in the lateral elements 15 via mounting holes 16 .

Each load carrier 6, which is arranged at a distance from one another, supports a top roller 7 therebetween in each case integrally, so that the top roller 7 is driven via an individual drive 8 in each case. The bottom roller is pressed with a uniform load force. A handgrip 9 is arranged on the load carrier 6 for comfortable movement of the drafting device 2 . Furthermore, this handgrip 9 allows the load carrier 6 to be pivoted with respect to the bottom roller after prior unlocking.

1 drafting device 2 spinning unit 3 support frame 4 support tube 5 notch 6 load carrier 7 top roller 8 drive unit 9 gripping element 10 spinning nozzle 11 control device 12 locking body/locking hook 13 locking hook catch 14 Locking hook opening 15 Lateral element 16 Mounting hole

Claims (11)

A support frame (3) for a drafting device unit for drafting slivers in a working unit of a textile machine, said support frame (3) having a load support ( In a support frame (3) having at least one bearing point for pivotally supporting 6)
The support frame (3) has a coupling section (5) and a locking unit (12) for detachably connecting the support frame (3) to the textile machine, in particular to the associated working unit. and
The locking unit (12) engages a locking catch (13) provided on the textile machine in the operating position of the support frame (3), movable between an open position and a locked position. having a possible locking body (12),
Support frame (3), characterized in that said locking body (12) is preloaded in the direction towards said locking position . Said connecting section (5) for placing on a receiving section (4) of said working unit is formed for moving said support frame (3) between a release position and an operating position, said release In the position, the support frame (3) can be removed from the associated working unit, and in the operating position, the support frame (3) is a load support ( 2. The support frame (3) as claimed in claim 1, wherein for operation 6) it is fixedly arranged on the associated working unit. 3. Support frame (3) according to claim 2, characterized in that the connecting section (5) has a notch (5) in the receiving section (4), in particular adapted to frame stays of the textile machine. Support frame (3) according to claim 3, characterized in that the cutout (5) is formed integrally with the support frame (3). 5. Any one of claims 1 to 4 , wherein the support frame (3) is configured to rotatably support a bottom roller associated with a top roller (7) that can be arranged on the load carrier. A support frame (3) according to claim 1. The support frame (3) is arranged to accommodate at least one additional unit, in particular a drive unit (8) of the bottom roller, a communication unit and/or a control device (11) of the drive unit. 6. The support frame (3) according to claim 5 , wherein a 7. Support frame (3) according to claim 6 , characterized in that the support frame (3) comprises mounting rails for accommodating the at least one additional unit. Said support frame (3) each has two bearing points for pivotable bearing of a load carrier (6), said load carrier (6), in particular said load carrier (6) 8. Support frame (3) according to any one of claims 1 to 7, adapted to support at least one top roller ( 7 ) between. 9. Support frame (3) according to any one of the preceding claims, characterized in that the support frame (3) has operating elements, in particular grip elements ( 9 ). Drafting device for a textile machine with a drafting device unit having a load carrier (6 ) with at least one top roller (7), said drafting device unit comprising: A drafting device comprising a support frame (3) according to any one of claims 1 to 3, in which the load support (6) is pivotally supported. Two load carriers (6) are arranged on the support frame (3), with at least one top roller (7) between the load carriers (6), the load carriers 11. Draft device according to claim 10 , characterized in that (6) are connectable or connected to each other via gripping elements (9).