GB2173133A

GB2173133A - Apparatus for regenerating dressing and like textile working tools

Info

Publication number: GB2173133A
Application number: GB08602853A
Authority: GB
Inventors: Gerhard Salzer; Matthias Roder
Original assignee: Kombinat Textima VEB
Current assignee: Kombinat Textima VEB
Priority date: 1985-03-11
Filing date: 1986-02-05
Publication date: 1986-10-08
Also published as: GB8602853D0; DD235215A1; FR2578466A1; DE3604769A1

Abstract

The invention relates to a regenerating apparatus for roughing rollers, shearing tools and the like, and has for its object to increase the productivity of such apparatus by avoiding the apparatus having to be shut down in order to change the dressing tools. This problem is resolved essentially in that the receiving stations for the dressing tools 7 are disposed planet-like on a rotatably mounted and driven carrier 8 adapted for controlled rotation and positioning at stations A, B, C, D, of which at least one has associated therewith at least one machining arrangement for treating a dressing tool while no machining arrangement is located in at least one station. By reason of this solution, it is possible for dressing tools to be machined in this apparatus for regenerating and, during the machining process in at least one station, to remove the regenerated dressing tool and mount a dressing tool which has to be regenerated in at least one other station with which no machining arrangement is associated. <IMAGE>

Description

SPECIFICATION Apparatus for regenerating dressing tools The invention relates to an apparatus for regenerating dressing tools such as roughing rollers, cutting cylinders or the like, wherein there is between two spaced-apart stand walls at least one driven support and, on the support, at least one machining unit, a plurality of dressing tools being mounted in at least one receiving station and between the stand walls.

Already known (Ripp, R. "Rationalisieren im Rauhprozess durch zweckmassiges Schleifen der Rauhwalsen", Melliand Textilberichte 42 (1961) 5, pp: 556 to 557) is an apparatus for regenerating (grinding, smoothing, dressing and/or polishing) roughing rollers, shearing cylinders and cutting tools, wherein two roughing rollers which have to be worked upon are adapted to be driven in mountings in each of two receiving stations within one stand. Between the stand walls carrying the roughing rollers and moving parallel with the longitudinal axis of the roughing rollers is a support on which three machining units are so disposed that in each case two roughing rollers are subjected to one specific operation while the other two roughing rollers are subjected to a further operation.Upon completion of this machining operation, the machining units are pivoted on the support and the other machining units necessary according to the technological process are associated with the two pairs of roughing rollers.

This pivoting away of one machining unit and pivoting in of the other machining unit does however require a relatively high labour involvement.

In the case of the grinding of shearing tools, however, it is only possible, as there is only one receiving facility, to machine only one shearing cylinder or alternatively one shearing cutter. This necessarily results in a relatively unfavourable l#evel of productivity of the grinding machine.

The object of the invention is so to construct the apparatus for regenerating dressing tools that their productivity is increased.

The invention is based on the problem of so constructing the apparatus for regenerating dressing tools that shutting down of the apparatus when changing the dressing tools (insertion of dressing tools which have to be machined and/or removal of finished dressing tools) can be avoided.

According to the invention, the problem is resolved by an apparatus for regenerating dressing tools such as roughing rollers, shearing cylinders or the like wherein between two spaced apart stand walls there is at least one driven support and in that there is on the support at least one machin ing unit, a plurality of dressing tools being mounted in at least one receiving station between the stand walls, the receiving stations for the dressing tools being disposed platen-like on a rotatably mounted and driven carrier, the carrier being disposed for controlled rotation and for positioning in stations, at least one machining unit being associated with at least one dressing tool in at least one station, no machining unit being disposed in at least one station.

Further features of the invention are set forth in the sub-paragraphs to the Invention Claim.

By reason of the solution according to the invention, it is possible for dressing tools to be machined in this apparatus for regenerating them and, during the machining process, a regenerated dressing tool can be removed from at least one machining station while a dressing tool which has to be regenerated can be fitted in and mounted on at least one station with which no machining device is associated. Thus, the productivity during regeneration of dressing tools is increased by the fact that it is no longer necessary to shut down the apparatus.

It is intended hereinafter to explain the invention in greater detail with reference to an example of embodiment shown in the associated drawings, in which: Figure 1 is a diagrammatic view of the apparatus for regenerating dressing tools; Figure 2 shows a cross-section along the line Il-Il in Figure 1; Figure 3 is a di#agrammatic view of a receiving member; Figure 4 is a diagrammatic view of the drive for the dressing tools, and Figure 5 shows a further alternative form of receiving and regenerating means for dressing tools.

As can be seen from Figure 1, this apparatus for regenerating dressing tools comprises inter alia two stand walls 1, 2 which are connected to each other by a machine bed 3. Disposed on the machine bed 3 is a corresponding guide 4 which is, for example, of dovetailed construction, for a support- plate 5 adapted for controlled movement. This support plate 5 is preferably mounted for controlled adjustment by a threaded spindle 6 so that by reason of the guide 4 a direction of movement is afforded such as is shown diagrammatically by the arrow in Figure 1.

Between the stand walls 1, 2 there is a carrier 8 which serves for receiving and mounting the dressing tools 7. This carrier 8 consists essentially of a shaft 9 on which there are two bodies 11, 12 provided with receiving stations 10 for the dressing tools 7. These bodies 11, 12 are, as shown in Figure 2, preferably of disc-shaped construction. It is, however, also possible to select different forms of embodiment, for example a wheel-shaped or, as shown in Figure 3, a stellate construction of bodies 11, 12. Furthermore, at least one body 11 and/or 12 is disposed for displacement on the shaft 9.

The receiving stations 10 are so disposed on the bodies 11, 12 that there is a parallel location of the dressing tools 7 mounted on the carrier 8 in relation to the longitudinal axis of the guide 4 and also in relation to the shaft 9. On the other hand, there is an equal interval between the shaft 9 and the dressing tools 7 disposed on the carrier 8. Furthermore, the receiving stations 10 are so disposed on the bodies 11, 12 that there is an equal division between them, as can also be seen from Figures 2, 3 and 4. However, it is also possible, as can be seen in Figure 5, for the receiving stations 10 to be so disposed on the bodies 11,12 that the dressing tools 7 can be mounted in pairs. In this case, the pairs of dressing tools 7 are equally spaced in respect of one another.

The shaft 9 of the carrier 8 is adapted to be driven under control in the mountings 13, 14 which are located on the stand walls 1, 2.

As Figure 2 shows, there are on the support plate-5 two machining devices 15, preferably dis posed at the same intervals as the dressing tools 7.

These two machining arrangements 15 constitute the corresponding machining stations "A" and "B", Disposed in a further machining -station "C" there is a machining device 15 for polishing. This machining device can be a machining device dis posed on.the support plate 5 or an automatic ar rangement, for example a roller extending over the entire width. No machining device 15 is associated with the station "D" in which dressing tools 7 -which have to be regenerated are loaded on the carrier 8 and/or regenerated dressing tools 7 are removed from the carrier 8.

The machining devices 15 disposed on-the sup port plate 5 can be both individually and also jointly fed to the dressing tools 7 which have to be regenerated or returned to their starting position.

This is shown symbolically in Figures 2 and 5 by arrows.

Figure 4 shows the drive for such dressing tools 7 which have to be driven during regeneration, for example roughing rollers. This drive comprises a belt pulley 6 which is driven and mounted in the stand wall 1 and, guided over reversing rollers 17 and kept taut by a tensioning device 18, a belt 19 which engages the drive pulleys 20 disposed on the dressing tools 7 which have to be driven. In this respect, only the dressing tools 7 which are lo cated in the machining stations "A" "B" and "C" are driven, while there is no drive at station "D".

It is convenient for the apparatus for regenerat ing to be so constructed that for example when re generating roughing rollers, the bearing points disposed on either side of the roughing roller should also serve for mounting the roughing roller in the receiving stations 10. Preferably used as a drive- means is a belt 19 such as corresponds to that for driving the dressing tool in the dressing machine, so that the drive pulley 20 also serves as a driving element in the regenerating apparatus. It is, however, also possible to use other drive means.

The apparatus for regenerating dressing tools works substantially as follows: The dressing tool 7 which is to be regenerated is mounted in the receiving station 10 located in the station "D". Afterwards, there is a timed and controlled drive which so moves the carrier 8 that there is in station "D" a receiving station 10 which is to be loaded with a second dressing tool 7 while the dressing tool 7 originally located in station "D" is now in the machining station "A".It is conveni ent for the carrier 8 to be completely loaded with -dressing tools 7 according to the number of receiv ing stations, without any machining taking place in the machining stations "A", "B", "C . Advantageously, the carrier 8 should only be loaded with one type of dressing tool 7, for example only with roughing rollers, these dressing tools 7 preferably having the same working width. Once the belt 9 has been engaged with the drive pulleys 20 of the dressing tools 7 which are disposed in the machining stations "A", "B", "C", this engagement preferably taking place automatically, the machining devices 15 are adjusted so that the dressing tools 7 can be machined as is required by the technological conditions.For example, smoothing can take place in machining station "A", grinding in ma-chining station "B", polishing in machining station "C". To make this possible over the entire width of the dressing tool 7, movement of the machining devices 15 dis#posed on the support plate 5 takes place via the driven screwthreaded spindle 6 as indicated by the arrows in Figure 1. Once the relevant machining operation has been concluded in the machining stations "A", "B", "C", there is a preferably automatic movement of the machining devices 15 back into their starting position. Via a drive, not shown, the carrier 8 is rotated under timing control according to the machining stage so that the dressing tool 7 which is disposed in a machining station is fed to the subsequent machining station.After the machining devices 15 have been adjusted, preferably automatically, further machining of the dressing tool 7 is performed. The dressing tool 7 which has been so regenerated moves according to the controlled rotary movement of the carrier 8 from the last machining station, in the example of embodiment it is the machining station "C", into station "D". In this station "D" the regenerated dressing tool 7 is removed from the receiving station 10 and a dressing tool 7 which has to be regenerated is fitted into the receiving station 10.

When cylindrical dressing tools 7 have to be ma- chined, there is in addition-a drive provided for the dressing tools 7 via the belt 19, as is required for example in the case of roughing rollers.

According to the above-described mode of operation of the apparatus for smoothing dressing equipment, there is in the first phase, that is to say prior to machining, a complete loading of the# carrier 8 with dressing tools 7. It is however also pos sidle to load the carrier 8 according to the technological programme, that is to say that also during the first loading of the carrier 8, the relevant dressing tool 7 can be machined in the machining stations- one after another. Until the carrier 8 is# fully loaded, corresponding reversing rollers 17 are used to move the belt 19 into the unoccupied receiving sations 10.

In the present example of embodiment, the carrier 8 has four receiving stations 10. It is however also possible so to construct the carrier 8 that a different number of receiving stations 10 are-available while retaining the number of machining de vices 15. Another alternative resides in increasing or reducing the number of machining arrangements 15.

Furthermore, it is also possible for azplurality of machining arrangements 15 simultaneously to be associated with one dressing tool 7.

It is however also possible to provide for scratch linings to be fitted on roughing rollers in a machining station. in this case, a corresponding fitting device is, for instance, disposed on the support plate 5.

For reasons of clarity, there is no representation of the drive inside the stand wall nor of the corresponding coverings and protective devices.

Claims

1. Apparatus for regenerating dressing tools such as roughing rollers, shearing cylinders or the like wherein between two spaced apart stand walLs there is at least one driven support and on the support at least one machining unit and between the stand walls a plurality of dressing tools mounted in at least one receiving station, characterized in that the receiving stations (10) for the dressing tools (7) are disposed platenj like on a rotatably mounted and driven carrier (8), and in that the carrier (8) is adapted for controlled rotation and can be positioned in stations ("A", "B", "C", "D"), whereby in at least one station ("A", "B" and/or "C") there is at least one dressing tool (7) with which a machining arrangement (15) is associated and in that there is no machining arrangement (15) present in at least one station ("D").

2. Apparatus according to Claim 1, characterized in that the carrier (8) is constructed as two bodies (11, 12) disposed on a shaft (9).

3. Apparatus according to Claims 1 and 2, characterized in that the bodies (11, 12) belonging to the carrier (8) are of stellate construction.

4. Apparatus according to Claims 1 and 2, characterized in that the bodies (11, 12) which belong to the carrier (8) are of disc-shaped construction.

5. Apparatus according to Claims 1 to 4, characterized in that at least one body (11 and/or 12) which belongs to the carrier (8) is adapted for displacement and to be locked on the shaft (9).

6. Apparatus according to Claims 1 to 5, characterized in that the carrier (8) is so constructed that the dressing tools (7) disposed in the machining stations ("A", "B", "C") can be driven.

7. Apparatus according to Claims 1 to 5, characterized in that the carrier (8) is so constructed that in the station ("D") with which no machining arrangement is associated and in which the dressing tool (7) is not driven, it is possible to load the carrier (8) with dressing tools (7) which have to be regenerated and/or to remove regenerated dressing tools (7) from that carrier (8).

8. Apparatus according to Claims 1 to 7, characterized in that the carrier (8) is so constructed that the receiving stations (10) disposed on the carrier (8) are spaced equally from the shaft (9) and in that the spaces between them are identical.

9. Apparatus according to Claims 1 to 8, characterized in that the carrier (8) is so constructed that upon rotation of the carrier (8) the dressing tool (7) mounted in the carrier (8) can upon reaching the machining station ("A") be automatically engaged with the drive (19).

10. Apparatus according to Claims 1 to 9, characterized in that there is associated with the carrier a machining station in which the machining arrangement is constructed as a device for fitting scratch strips.

11. Apparatus for regenerating dressing tools as claimed in claim 1, substantially as described herein with reference to and as illustrated by any one of the examples shown in the accompanying drawings.