DE4011546A1 - Traverse winder thread guide roller - utilises sequential assembly technique for prodn. - Google Patents

Abstract

The thread guide roller for a traverse winding mechanism may be cylindrical or conical. The groove surface is made from a hard wearing metal fixed to radial supports from the axis. The space between is filled with material of a lower relative density. A cylindrical traverse winding roller (22) has radial supports (11,12). The outer sheet metal cylinder (16) is made from stainless steel, and is preformed with the guide grooves (2) into which the thread lies when being wound onto a reel. The radial supports (11,12) may number four or six, aligned axially and welded equidistantly to the outer cylinder. These are of varying length and dia.. ADVANTAGE - The construction is conductive to an automated prodn. line procedure, with sectional assembly.

Description

The invention relates to a thread guide drum Winding device with a thread groove leading the thread of different widths and depths, consisting of one cylindrical or conical sheath made of wear-resistant Metal and a clip on a drive shaft, the jacket load-bearing and / or supporting substructure.

Such thread guide drums are used for pure winding machines, but also used for textile machines that have one or more Spooling devices are assigned.

The following publications show and describe such Thread guide drums: GB-PS 10 97 028, CH-PS 5 58 763, US-PS 27 53 126, US-PS 33 86 150.

The known thread guide drums have disadvantages. you are either too complicated in structure and therefore for one Mass production either too expensive or in their structure and their Running properties difficult to reproduce, or they are like that procure that none of them for high performance winding operation with suitable winding thread groove at high winding speeds is executable.

The invention has for its object one for Mass production suitable, identically reproducible and one Enabling winding operation with high winding speeds To create thread guide drum.

According to the invention, this object is achieved in that the Substructure several axially parallel to the axis of rotation of the Thread guide drum aligned, radially up to the jacket has extending metal webs connected to the jacket and that between the metal bars and the jacket lying sectors with the mantle supporting solid relatively low specific weight are filled. Especially in this solid, but also in the metal bars Any suitable for high-performance winding operation can be inserted Reverse thread groove can be incorporated. The concept of the invention is therefore very adaptable and has the thread guide drum a low mass suitable for high-performance winding operation given drum diameter.

Although the wear of the Drum surface is much larger than in normal winding operation, if the thread guide drum also the one to be wound Drives cheese, so has the invention Thread guide drum a completely sufficient Wear resistance and thus a full one for a long time Functionality.

In a further development of the invention, four to six are preferred evenly distributed over the inner circumference of the jacket Metal bars are provided to support the jacket. With four Metal bars will be an optimum in terms of the need for metal support and stiffening of the jacket and the Profitability of producing this support is expected.  

In a development of the invention it is provided that metal webs and jacket made of stainless steel and together are welded.

A jacket made of stainless steel represents the current optimum in wear resistance and corrosion resistance as well as one sufficiently large coefficient of friction between the jacket and the coil winding Create metal bars from the same material optimal welding conditions under the given circumstances.

In a development of the invention it is provided that the Metal bars with a central tube made of metal are connected, which receives the drive shaft. In the finished state is therefore a metallic connection between the central tube and the coat. The central tube is, for example, as Clamp bushing designed.

In a development of the invention are in between Central tube, the metal bars and the jacket located free spaces Solid segments used. With four metal bars for example, four solid segments required.

Alternatively, in a further development of the invention, a solid part provided in which the metal webs end.

Whether a one-piece solid part the solid segments in all Cases that are superior cannot easily be decided will. In certain cases there are assembly advantages.

In a further development of the invention, the solid part or the Solid segments with the metal bars and / or with the Central tube and / or the jacket glued. Gluing can for example with heat-resistant cast resin.  

In a development of the invention is in the solid part or in the solid segments at least partially the reverse thread groove incorporated.

It is conceivable that with exact mass production The sweeping thread groove must be worked into all parts so precisely can do that after exactly fitting assembly no rework more is needed. Then it would be useful, even in the Coat the reverse thread groove just as precisely if you does not want any rework. However, this condition is difficult to fulfill. It is very advantageous, however, in the parts Partly incorporate the reverse thread groove, for example so that only a little material removed during subsequent rework must become. The partially built-in reverse thread groove can also a kind of guide groove for the reworking tool form.

In a further development of the invention, the solid part or the solid segments made of light metal, thermoset Plastic (thermoset) or cast resin. The solids should if possible be such that the one incorporated into it Reverse thread groove does not cause excessive wear due to running Thread is subject. Heating problems arise during the Winding operation in general not because the heat is partly goes over the coat and because a good one when wrapping Air swirl occurs.

In a development of the invention it is provided that Solid part or the solid segments at the turning points and / or intersections of the reverse thread groove deposits possess wear-resistant material. It is known that just there the sweeping thread groove increased wear is exposed.  

In a further development of the invention, the metal webs are over distributed around the circumference, that there is a metal web located at the turning point of the reverse thread groove. In these Metal bar is or is the sweeping thread groove incorporated, so that he can take over wear protection himself. The coat could be from a seamless drawn tube, cone or the like be made. A simpler assembly results in general, however, in that in further development of the invention Sheath is formed from sheet metal and welded at the seam. The welding only needs to be done during assembly, so that the coat had previously been firmly clamped around the base and only then can be welded.

In a development of the invention it is provided that in the jacket from the outset, the reverse thread groove at least partially is incorporated. The advantages have already been mentioned above.

For producing a thread guide drum according to claims 1 to 5 and 7 to 14 is a further development of the invention Claims method, which consists in that a Welded construction consisting of a central tube and several metal ridges protruding radially from the central tube are produced, that the solid segments are prefabricated, between the metal bars inserted and glued to a base body, and that the Prefabricated coat, pushed over the base body and with the Metal bars are welded.

Alternatively, to make one Thread guide drum according to one of claims 1 to 4 and 6 to 14 the solid part, the metal webs and, if necessary, the wear-resistant material existing insoles individually prefabricated and then together to form a basic body glued. The coat is prefabricated, over the base body pushed and welded to the metal bars. The central tube is pressed into and / or glued into the solid part.  

The methods offer various advantages. Metal parts and Plastic parts or solid parts can each stand alone manufactured in specially equipped factories will. The assembly can take place in a particularly suitable place can be made elsewhere. So can the whole Manufacturing can be made very flexible.

In a further development of the invention it is provided that the butt seam of the prefabricated jacket only welded to the base body becomes. The advantages have already been mentioned above. In addition the jacket is advantageously glued to the base body.

In a further development of the invention, before and / or after Apply the jacket to the base body or reworking the reverse thread groove, one Eliminating out-of-roundness by overturning and / or Grinding and cleaning are carried out and then there are imbalances found and eliminated.

Whether out-of-roundness has to be removed from the base body, depends crucially on the accuracy of the prefabrication. A Reworking the sweeping thread groove is only in the basic body generally not required. This only happens when the coat is applied.

In a development of the invention it is provided that the or Solid parts alternatively by casting, pressing or injection molding formed and connected to the metal parts.

Embodiments of the invention are in the drawings shown. Based on these embodiments, the Invention described and explained in more detail.  

Fig. 1 shows the front view of a finished thread guide drum according to the invention.

Fig. 2 shows the front view of the same drum after a rotation of 180 degrees.

Fig. 3 shows the front view of a prefabricated jacket matching the thread guide drum according to Fig. 1.

FIG. 4 shows the front view of a prefabricated base body, which matches the thread guide drum according to FIG. 2, and has an integrated reversing thread groove.

Fig. 5 shows the front end a yarn guide drum, the base body has four solid segments.

FIG. 6 shows the front view of a prefabricated base body matching the thread guide drum according to FIGS . 1 and 2, without an integrated sweeping thread groove.

Fig. 7 shows the end face of a further thread guide drum, the base body of which has a single solid part.

In the thread guide drum 1 shown in FIGS . 1 and 2, the reversing thread groove 2 has a different width and depth. The groove portion 2 'is, for example, narrow and deep, which situated behind the crossing points 4, 5 and 6 collecting pockets 19, 21 and 20 provide extensions of the reversing screwthread groove 2. The groove portion 2' 'is, for example, narrow and flat. When the thread guide drum 1 rotates in the direction of arrow 3 , the left turning point 8 of the sweeping thread groove 2 is at an angle of 0 degrees. The first crossing point 4 is 180 degrees, the second crossing point 5 is 360 degrees and the third crossing point 6 is 540 degrees of rotation. The right turning point 7 is then at an angle of 720 degrees, and there the thread (not shown here), which has been changing from left to right up to now, merges into the direction of change. He then reaches the right crossing point 6 at a rotation angle of 900 degrees, the middle crossing point 5 at a rotation angle of 1080 degrees, the left crossing point 4 at a rotation angle of 1260 degrees and the starting position at a rotation angle of 1440 degrees of the thread guide drum 1 .

The structure of the thread guide drum 1 results from FIGS . 3, 4 and 5.

According to FIG. 5, metal webs 11 , 12 , 13 , 14 projecting radially from a central tube 9 and extending parallel to the axis of rotation over the entire length of the drum, which together with the central tube 9 represent a compact welded construction. The metal bars are spaced 90 degrees apart. Solid segments 15 to 18 are inserted between the metal webs 11 to 14 . They are glued to the metal webs 11 to 14 and, together with the central tube and the metal webs, form a base body 22 shown in FIG. 4. In FIG. 4, only the metal webs 11 and 12 and the solid segments 15, 16 and 18 are visible from the base body 22. Fig. 4 shows that the sweeping thread groove 2 is already incorporated in the solid segments, but not in its entire width and depth.

According to FIG. 5, the metal webs 11 extend to 14 and the solid segments 15 to 18 as far as a cylindrical shell 23. The jacket 23 is made of approximately 1.5 mm thick sheet metal and welded together at the interface 24 and at the same time welded to the metal web 13 . The central tube, metal bars and jacket are made of stainless steel, preferably chrome steel. All other webs 11 , 12 and 14 are also welded to the jacket 23 at suitable points by spot welding. Alternatively, if necessary, the jacket 23 shown in FIG. 3 can be provided with holes, not shown here, so that each web can be connected to the jacket at a sufficient number of welding points, regardless of whether this is done by spot welding or in some other way.

The prefabricated jacket 23 is already rolled according to FIG. 3, but not yet welded at the interface 24 . The sweeping thread groove 2 is already incorporated into the prefabricated casing 23 , but not in its full width. In addition, the reverse thread groove 2 is still bridged by various webs 25 to 32 , which will be cut later when reworking or finishing the reverse thread groove 2 . In certain cases, however, it can also be advantageous to leave the webs 27 and 30 according to FIG. 3 and corresponding webs at the other crossing points at the crossing points of the reversing thread groove 2 . However, this depends on the type of sweeping thread groove 2 . When assembling the prefabricated jacket 23 , it is glued to the base body 22 .

After welding or connecting the jacket to the webs and after finishing the sweeping thread groove 2 , non-roundness is eliminated by overtightening and grinding, then the thread guide drum 1 is cleaned and then imbalances are determined and eliminated.

In the alternative thread guide drum 1 'according to FIG. 7, the base body 22 ' also shown in FIG. 6 'consists of a single solid part 33 , the central tube 9 ' pressed into the solid part 33 'and the metal webs 11 ' to 14 'glued into the solid part 33 . The jacket 23 is the same as that of the thread guide drum 1 .

In this embodiment, too, all metal parts are made of stainless steel. The solid part 33 is only provided with receiving grooves for the metal webs, but not with the reverse thread groove 2 . It is only produced after the final assembly of the parts, the reversing thread groove 2 , which has not yet been fully worked into the casing 23, being able to serve as a guide groove of a tool producing the reversing thread groove. Alternatively, provision can be made not to incorporate sweeping thread grooves from the outset into the jacket 23 or into the solid segments 15 to 18 of the first exemplary embodiment. It can be advantageous to make the sweeping thread groove only after all the parts have been assembled. However, if the solid parts are prefabricated by casting, pressing or punching, it is cheaper to save the material, at least in part, by forming the reverse thread groove.

As a manufacturing alternative is provided that the jacket and Are there any existing structures? Contains wear protection parts, prefabricate and the or Solid parts by subsequent casting, pressing or To form injection molding.

Depending on the design, the central tube either belongs to the Welded structure, or it becomes against the welded structure aligned and cast in, or pressed in.

Claims (19)

1. Thread guide drum of a winding device with a thread-guiding reversing thread groove of different width and depth, consisting of a cylindrical or conical jacket made of wear-resistant metal and a plug-on to a drive shaft, supporting the jacket and / or supporting substructure, characterized in that the substructure has several has axially parallel to the axis of rotation ( 10 ) of the thread guide drum ( 1 , 1 '), radially extending to the jacket ( 23 ) metal webs ( 11 to 14 ; 11 ' to 14 ' ) which are connected to the jacket ( 23 ), and that between the metal webs ( 11 to 14 ; 11 'to 14 ') and the jacket ( 23 ) lying sectors with the jacket ( 23 ) supporting solid ( 15 to 18 , 33 ) are filled relatively low specific weight. 2. Thread guide drum according to claim 1, characterized in that four to six metal webs ( 11 to 14 ; 11 'to 14' ), preferably distributed uniformly over the inner circumference of the jacket, are provided to support the jacket ( 23 ). 3. Thread guide drum according to claim 1 or 2, characterized in that metal webs ( 11 to 14 ; 11 'to 14 ') and jacket ( 23 ) consist of stainless steel and are welded together. 4. Thread guide drum according to one of claims 1 to 3, characterized in that the metal webs ( 11 to 14 ) are connected to a metal central tube ( 9 ) which receives the drive shaft. 5. Thread guide drum according to claim 4, characterized in that in the between the central tube ( 9 ), the metal webs ( 11 to 14 ) and the jacket ( 23 ) free spaces solid segments ( 15 to 18 ) are used, pressed or cast. 6. Thread guide drum according to one of claims 1 to 3, characterized in that an inserted, pressed or cast solid part ( 33 ) is provided, and that the metal webs ( 11 'to 14 ') end in the solid part. 7. Thread guide drum according to claim 5 or 6, characterized in that the solid part ( 33 ) or the solid segments ( 15 to 18 ) with the metal webs ( 11 'to 14 '; 11 to 14 ) and / or the central tube ( 9 '; 9 ) and / or the jacket ( 23 ) are glued. 8. Thread guide drum according to one of claims 5 to 7, characterized in that in the solid part ( 33 ) or in the solid segments ( 15 to 18 ) the reverse thread groove ( 2 ) is at least partially incorporated. 9. Thread guide drum according to one of claims 1 to 8, characterized in that the solid part ( 33 ) or the solid segments ( 15 to 18 ) consist of light metal. 10. Thread guide drum according to one of claims 1 to 8, characterized in that the solid part ( 33 ) or the solid segments ( 15 to 18 ) consist of thermosetting plastic (thermoset) or cast resin. 11. Thread guide drum according to one of claims 1 to 10, characterized in that the solid part ( 33 ) or the solid segments ( 15 to 18 ) at the turning points ( 7 , 8 ) and / or crossing points ( 4 , 5 , 6 ) of the sweeping thread groove ( 2 ) Have inserts made of wear-resistant material. 12. Thread guide drum according to one of claims 1 to 11, characterized in that the metal webs ( 11 to 14 ; 11 'to 14' ) are so distributed over the circumference that there is a metal web ( 13 , 13 ') at the turning point ( 7 , 8 ) of the reverse thread groove ( 2 ). 13. Thread guide drum according to one of claims 1 to 12, characterized in that the jacket ( 23 ) is formed from sheet metal and is welded at the interface ( 24 ). 14. Thread guide drum according to one of claims 1 to 13, characterized in that the reversing thread groove ( 2 ) is at least partially incorporated into the jacket ( 23 ) from the outset. 15. A method for manufacturing a thread guide drum according to one of claims 1 to 5 and 7 to 14, characterized characterized in that a welded structure consisting of one central tube and several radially from the central tube protruding metal bars that the Prefabricated solid segments, between the metal bars inserted and glued to a base body, and that the jacket is prefabricated, pushed over the body and is welded to the metal bars. 16. A method of manufacturing a thread guide drum according to one of claims 1 to 4 and 6 to 14, characterized characterized in that the solid part, the metal webs and if necessary, those made of wear-resistant material Inserts individually prefabricated and then closed together be glued to a base body that the jacket prefabricated, pushed over the base body and with the  Metal webs is welded, and that a central tube in the Solid part is pressed and / or glued. 17. The method according to claim 15 or 16, characterized in that the butt seam of the prefabricated jacket only on the Basic body is welded. 18. The method according to any one of claims 15 to 17, characterized characterized in that before and / or after the application of the Working out a coat on the base body respectively Reworking the reverse thread groove, an elimination of Out of roundness due to overtightening and / or smoothing and Cleaning takes place and that afterwards imbalances are determined and be eliminated. 19. The method according to claim 15 or 16, characterized in that the solid part or parts ( 15 to 18 ; 33 ) alternatively formed by casting, pressing or injection molding and thereby with the metal parts ( 9 , 11 to 14 , 23 ; 9 ', 11th 'To 14 ', 23 ) are connected.