End block with special profile for centering yarn winding tubes of various types used in dyeing and other processes

Abstract

 The end block has, from the outside inward, a first frontal perimetric supporting rim (9); a truncated conical shoulder (10); a second supporting rim (12) with a curved profile forming a collar (14); a deep annular groove (16); and an inner wall (16B) of said groove (16) with a flared profile. It may be used with tubes of various types.

Description

[0001] At the present time, spinning machines have limitations in the use of the various types of tubes required by users, according to the equipment in which the yarns are to be treated after winding into reels on the tubes. This constitutes a serious disadvantage which is eliminated by using the present end block, with which may also be associated a particular type of tube described in another simultaneous patent held by the holder of the present patent.

[0002] Essentially, the end block in question may form the centering part for tubes of different shapes used for dyeing and other processes, these tubes being either cardboard tubes for finished yarn intended for direct use or special resin tubes, to make the use of the spinning machines highly flexible.

[0003] Essentially, the end block according to the invention has, from the outside inward:

• a first frontal perimetric supporting rim;
• a truncated conical shoulder;
• a second supporting rim, which may have a curved profile, forming a collar;
• a deep annular groove; and
• an inner wall of said groove with a flared profile.

[0004] This configuration provides an end block usable with a plurality of tubes within the limits of tolerance of spinning machines.

[0005] The drawing shows in detail the end block according to the invention, the base disk for which the piece in question forms the end block, and the different uses with various types of tube. In the drawing,

Figs. 1, 2, and 3 show the end block in diametral section and in views along II-II and III-III in Fig. 1;

Figs. 4, 5, and 6 show, in a similar way to Figs. 1, 2, and 3, the base disk which can be used for the various applications in diametral section and in views along V-V and VI-VI in Fig. 4 respectively;

Fig. 7 is an exploded view of the two disks shown in the preceding figures and a particular type of tube which can be used with them, in partial schematic axial section;

Fig. 8 is a view of said tube from line VIII-VIII in Fig. 7;

Figs. 9 and 10 show the use of the disks shown in Figs. 1 to 6 with further different types of tubes; and

Fig. 11 shows an equivalent form of end block.

[0006] As shown in Figs. 1 to 3, an end block is provided having on its outer face a central projection 3 and an annular rim 5 at a limited distance from the periphery of the disk, together with an intermediate annular depression 7 which surrounds the central projection 3. The configuration of the outer face may also be different and is dependent on the type of machine.

[0007] On the lower face, which is to come into contact with the top of the tube, the end block has, characteristically, starting from the outside, a first frontal perimetric supporting rim 9 immediately adjacent to the periphery of the disk. This is followed by a truncated conical shoulder 10, which is followed by a second annular supporting rim 12 with a curved, concave profile which forms part of a projecting collar 14. Inside said collar 14 there is formed a deep annular groove 16 having a slightly tapered outer wall 16A and an inner wall 16B which is appropriately rounded to give a flared profile to facilitate the positioning of a collar of a tube as stated below.

[0008] The inner wall 16B may be lower than that shown in Fig. 1, and in this case may have the configuration shown in Fig. 11. In said figure (corresponding to Fig. 1), identical numbers indicate identical or corresponding parts.

[0009] Figs. 4 to 6 show a disk 20 which forms the supporting base of the tubes which may be fitted on a spooler equipped with said base disk 20 and with the end block 1 specified previously.

[0010] This disk 20 (of a type known in itself) has on the outer face a central projection 23 surrounded by a step 25, a successive collar 27 and a surface 29; the upper face (viewed as in Fig. 4) of said base disk 20 has a flat surface 31, a tapered wall 33 and, perimetrically, a frontal supporting rim 35 for centering the lower edge of the tube.

[0011] The pair of disks 20 and 1 makes it possible to use different tubes on the same machine (spooler, spinning machine, winding frame, etc.). Figs. 7 to 10 show examples of tubes which can be used with the disks in question and in particular with the disk 1 forming an end block and shaped in the way stated above.

[0012] Fig. 10 shows a tube TC of conventional type made of pressboard, whose lower edge TC1 can be positioned on the base disk 20, being supported on the rim 35 and centered by the wall 33. The tube TC has at its top an annular thickening or bead TC2 which projects inward with respect to the truncated conical shell of the tube; this terminal thickening TC2 can be centered by the supporting rim 12 and by the collar 14, as clearly shown in Fig. 10.

[0013] The letters TP in Fig. 9 indicate a second type of tube in common use, made of thermoplastic resin, which can also be used with the disks 20 and 1. The lower edge TP21 of the tube TP can be supported on the rim 35 and centered by its inner wall 37. The upper edge TP2 of this tube can be supported on the frontal perimetric supporting rim 9 which is centered by the truncated conical shoulder 10 of the tube 1.

[0014] Figs. 7 and 8 show in detail a particular tube indicated in a general way by 41, which has a lower edge 43 which can rest on the frontal perimetric rim 35 of the base tube 20, being centered by the wall 37. At the opposite upper end (viewed as in Fig. 7) the tube 41 has a perimetric rim 45 which projects longitudinally, in other words axially, from a small terminal step 47 surrounding said rim. Inside and under said rim 45 there is provided a radial connecting grid 49 between the outer wall of the tube and an inner collar 51, which can also be extended axially as far as the level of the outer rim 45. The grid 49 has a substantially flat top, while it is tapered internally for strength. A large circular aperture 53 is formed inside the collar 51. The outer wall 41A of the tube 41 consists (in the example illustrated) of a series of rings 41B connected by inclined links 41C in the gaps between them, the links 41C of each gap being inclined in the opposite direction to that of those in the adjacent spaces, as is clearly shown in the drawing. The wall 41A of the tube 41 is substantially cylindrical. However, the configuration of the tube wall may be of any type, and that shown in the figures is purely an example.

[0015] With the tube 41 (or other equivalent) it is possible to use the same base disk 20 and the same end block disk 1 described previously. The tube 41 is centered on the disk 1, the frontal support provided between the collar 14 and the outer surface being formed by the grid 49, while the mutual centering between the tube 41 and the end block disk 1 is provided by the inner wall 16B of the annular groove 16, which engages with the inner surface of the collar 51 and consequently with the circular aperture 53.

[0016] The tube 41 with its circular aperture 53 delimited by the inner collar 51 enables the tube to be disposed also in dyeing equipment comprising a centering support in the form of a small column on to which the tubes can be fitted according to a known technique used with dyeing equipment. The tubes 41 can be centered on each other by making use of the perimetric support formed by the step 47 and of the centering provided by the outer wall of the perimetric rim 45 adjacent to the said step 47, which engages with the inner surface of the edge 43 of the tube 41 located above.

Claims

1) An end block with a special profile for centering synthetic resin tubes of different configurations used for yarn dyeing and other processes, and for centering card tubes for finished yarn intended for direct use, comprising, from the outside inward, a first frontal perimetric supporting rim (9); a truncated conical shoulder (10); a second supporting rim (12) forming a collar (14); a deep annular groove (16); and an inner wall (16B) of said groove (16) with a flared profile; said end block being consequently usable with a plurality of types of tube within the axial tolerances of spinning machines.

2) The disk as claimed in claim 1, wherein the second supporting rim (12) has a curved profile.

Drawing