CARRYING DEVICE FOR AN APRON DRAFTING SYSTEM

Abstract

An apron drafting system for a spinning machine as well as a carrying device for an apron drafting system of a spinning machine, with a first and a second support, each of which is configured for detachably accommodating an apron bridge and/or for rotatably bearing a drawing roller is provided. In order to provide a carrying device for an apron drafting system as well as an apron drafting system of a spinning machine, which enable an apron to be changed quickly, there is provision with the carrying device for the first support to have a base element and a guide section detachably connected to the base element and having a bearing opening for rotatably bearing the drawing roller as well as a first mounting opening for accommodating a first bearing section of the apron bridge.

Claims

1. A carrying device for an apron drafting system of a spinning machine, with a first support and a second support, each of which is configured for detachably accommodating an apron bridge, for rotatably bearing a drawing roller, or both, characterized in that the first support has a base element and a guide section which is detachably connected to the base element, the guide section has a bearing opening for rotatably bearing the drawing roller as well as a first mounting opening for accommodating a first bearing section of the apron bridge.

2. The carrying device according to claim 1, characterized in that the carrying device has a base carrier on which the first support and the second support are arranged at a distance from one another, the base element being connectable to the base carrier.

3. The carrying device according to claim 1, characterized in that the guide section is detachably connected to the base element via a linear guide in an operating position aligned in the longitudinal axis direction of the drawing roller and apron bridge.

4. The carrying device according to claim 3, wherein the linear guide is a dovetail guide.

5. The carrying device according to claim 1, characterized by a securing element for locking the guide section to the base element in the operating position.

6. The carrying device according to claim 5, wherein the securing element is a securing screw.

7. The carrying device according to claim 1, characterized in that the second support for detachably accommodating a second bearing section of the apron bridge comprises a second mounting opening with an entry slope running obliquely to an accommodating shaft, the accommodating shaft being configured in the operating position of the apron bridge by a shaft connecting the first and second mounting opening, and a first detenting spaced apart from the entry slope and delimiting the second mounting opening, which in the operating position is brought into engagement with a complementary second detenting on the second bearing section, in which case the second bearing section of the apron bridge is adjustable in the second mounting opening between the operating position and a release position in which the first detenting and the second detenting are disengaged.

8. The carrying device according to claim 7, characterized in that the second detenting is configured as a slot, the first detenting is configured as a detent pin aligned perpendicular to the accommodating shaft, or both.

9. The carrying device according to claim 1, characterized in that the carrying device is configured for carrying a drive unit, in which case the drawing roller is borne in a stationary manner on the drive unit with its end opposite the first support.

10. The carrying device according to claim 1, characterized in that the apron bridge is borne in the operating position so as to be longitudinally displaceable along the accommodating shaft on the first support and the second support.

11. An apron drafting system for a spinning machine having a carrying device with a bottom apron guided over a drivable bottom roller, the bottom apron being supported in the area of a main drawing zone by a sliding section of an apron bridge, characterized in that the carrying device is configured with a first support and a second support, each of which is configured for detachably accommodating an apron bridge, for rotatably bearing a drawing roller, or both, wherein the first support has a base element and a guide section which is detachably connected to the base element, the guide section has a bearing opening for rotatably bearing the drawing roller as well as a first mounting opening for accommodating a first bearing section of the apron bridge.

12. The apron drafting system according to claim 11, wherein the spinning machine is an air spinning machine.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will become more fully understood from the detailed description and the accompanying drawings wherein:

[0031] FIG. 1 shows a perspective view of a drafting system carriage with a drawing roller and an apron bridge in the operating position;

[0032] FIG. 2 shows a perspective view of the drafting system carriage from FIG. 1 in the removed state of the first support and a push-in position of the apron bridge;

[0033] FIG. 3 shows a perspective view of the drafting system carriage from FIG. 1 in a partially pivoted state of the apron bridge;

[0034] FIG. 4 shows a perspective view of the drafting system carriage from FIG. 1 in an operating position of the apron bridge and drawing roller;

[0035] FIG. 5 shows a perspective view of an apron drafting system with a drafting system carriage according to FIG. 1; and

[0036] FIG. 6 shows a perspective view of a drafting system bottom section of the apron drafting system from FIG. 5.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] The following description of the embodiments of the present invention is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. The following description is provided herein solely by way of example for purposes of providing an enabling disclosure of the invention, but does not limit the scope or substance of the invention.

[0038] Referring to the figures, FIG. 5 depicts a perspective representation of an apron drafting system 1 of a spinning position (not depicted here) of a textile machine, which apron drafting system 1 can be fixed to the textile machine using detent hooks 21. The apron drafting system 1 has a drafting system top section 19, which is articulated on a drafting system bottom section 2, in which case pivoting is effected by actuating a handle 20.

[0039] In the operating position of the apron drafting system 1 as depicted in FIG. 5, the drafting system top section 19 with four top rollers arranged one behind the other in the running direction of a fiber band (not depicted here) through the apron drafting system 1 lie on the corresponding, driven bottom rollers 3, 4, 5, 6 of the drafting system bottom section 2. The bottom rollers 3, 4, 5, 6 include the infeed roller 3, which is the first to come into contact with the fiber band, is driven by a roller drive 7 and forms the first bottom roller of the drafting system bottom section 2. The infeed roller 3 is arranged together with the roller drive 7 on a carrying device 8a configured as a drafting system carriage, whichlike the carrying devices 8b, 8c, 8d explained below, which are each configured as a drafting system carriageis configured for connection to a frame 16 of the drafting system bottom section 2 (see FIG. 2).

[0040] The drafting system carriage 8a is followed in the direction of travel of the fiber band by the drafting system carriage 8b, on which is arranged a first drawing roller 4 with a roller drive 7 driving the drawing roller 4. The drafting system carriage 8b is in turn followed by the drafting system carriage 8cviewed in the direction of travel of the fiber bandwhich has a second drawing roller 5 as well as a roller drive 7 driving the drawing roller 5. In contrast to the drafting system carriage 8b, the drafting system carriage 8c also has an apron bridge 9, which is held with its opposite bearing sections 27, 28 on a first and a second support 11a, 11b, which are connected to a base carrier 17 of the drafting system carriage 8c.

[0041] A bottom apron 10 runs on the drafting system carriage 8c around the apron bridge 9 as well as the second drawing roller 5 and ensures that a fiber band does not come into direct contact with the second drawing roller 5. The drafting system carriage 8c is ultimately followed in the transporting direction of the fiber band by the drafting system carriage 8d, which has an outfeed roller 6 driven by a roller drive 7, by means of which outfeed roller 6 the drafted fiber band leaves the apron drafting system 1.

[0042] To replace the bottom apron 10, the first support 11a of the drafting system carriage 8c has a base element 12 connected to the base carrier 17 and a guide section 13 which can be detachably arranged on the base element 12. In the operating position of the drafting system carriage 8c as depicted in FIG. 1, the guide section 13 is depicted in its mounted position, the guide section 13 being arranged on a guide element 25 of the base element 12 via an opening not depicted here.

[0043] To secure the mounted position of the guide element 13 on the base element 12 as depicted in FIG. 1, a screw 23 is used, which can be screwed through an opening 24 in the guide section 13 into the guide element 25 on the base element 12.

[0044] In the operating position secured in this way, the first bearing section 27 of the apron bridge 9 is located in a first mounting opening 15, which is a through hole, on the guide section 13. Furthermore, a drawing roller bearing 22 arranged on the end of the drawing roller 5 opposite the roller drive 7 is located in the bearing opening 14 provided for this purpose on the guide section 13.

[0045] Replacement of the bottom apron 10, which is held in position on the apron bridge 9 and the drawing roller 5 by an apron guide 18 arranged on the base carrier 17, involves loosening the screw 23 and pulling the guide section 13 off the base element 12 until the position depicted in FIG. 3 is reached. In this position, it is possible to pull off the bottom apron 10 unhindered over the then free ends of the drawing roller 5 and apron bridge 9 and then to arrange a new bottom apron 10 on the drafting system carriage 8c.

[0046] It is also possible for the apron bridge 9 to be replaced. For this purpose, the apron bridge 9 is shifted by pivoting it into the position depicted in FIG. 2. The pivoting capability of the apron bridge 9 on the second support part 11b results from the embodiment of the second mounting opening 29 for the second bearing section 28 of the apron bridge 9. In other words, the second mounting opening 29 has an entry slope which allows the apron bridge 9 to be pulled out of the second mounting opening 29 in the removal position of the apron bridge 9 depicted in FIG. 2.

[0047] A new apron bridge 9 can subsequently be arranged again on the drafting system carriage 8c in reverse order, in which case the apron bridge 9 with the second bearing section 28 is pushed into the second mounting opening 29 in the position aligned in FIG. 2 along the entry slope.

[0048] Subsequent pivoting via the intermediate position depicted in FIG. 3 for accommodating a bottom apron into the end position depicted in FIG. 4 not only results in tensioning of the bottom apron but also in a detent pin 30, configured as a first detenting means, on the second support 11b, which protrudes in the direction of the entry slope of the mounting opening 29, engaging in the position depicted in FIG. 2 with a slot 32 configured as a second detenting means on the second bearing section 28 of the apron bridge 9 and thereby fixing the apron bridge 9 in position in the longitudinal axis direction of the drawing roller 6.

[0049] After the apron bridge 9 has been moved into the position depicts in FIG. 4, in which it rests on a shoulder 31 of the second support 11b, and after the guide section 13 has been pushed onto the base element 12, the drafting system carriage 8c can be put back into operation.

LIST OF REFERENCE SIGNS

[0050] 1 Apron drafting system [0051] 2 Drafting system bottom section [0052] 3 Infeed roller [0053] 4 First drawing roller [0054] 5 Second drawing roller [0055] 6 Outfeed roller [0056] 7 Roller drive [0057] 8a Drafting system carriage (infeed roller) [0058] 8b Drafting system carriage (first drawing roller) [0059] 8c Drafting system carriage (second drawing roller) [0060] 8d Drafting system carriage (outfeed roller) [0061] 9 Apron bridge [0062] 10 Bottom apron [0063] 11a First support [0064] 11b Second support [0065] 12 Base element [0066] 13 Guide section [0067] 14 Bearing opening [0068] 15 First mounting opening [0069] 16 Frame (drafting system bottom section) [0070] 17 Base carrier [0071] 18 Apron guide [0072] 19 Drafting system top section [0073] 20 Handle [0074] 21 Detent hook [0075] 22 Drawing roller bearing [0076] 23 Screw [0077] 24 Opening [0078] 25 Guide element [0079] 26 Opening [0080] 27 First bearing section (apron bridge) [0081] 28 Second bearing section (apron bridge) [0082] 29 Second mounting opening [0083] 30 Detent pin (first detenting means) [0084] 31 Shoulder [0085] 32 Slot (second detenting means)

[0086] It will therefore be readily understood by those persons skilled in the art that the present invention is susceptible of broad utility and application. Many embodiments and adaptations of the present invention other than those herein described, as well as many variations, modifications and equivalent arrangements, will be apparent from or reasonably suggested by the present invention and the foregoing description thereof, without departing from the substance or scope of the present invention. Accordingly, while the present invention has been described herein in detail in relation to its preferred embodiment, it is to be understood that this disclosure is only illustrative and exemplary of the present invention and is made merely for purposes of providing a full and enabling disclosure of the invention. The foregoing disclosure is not intended or to be construed to limit the present invention or otherwise to exclude any such other embodiments, adaptations, variations, modifications and equivalent arrangements.