DE4211597A1 - Spinning frame - has spring tensioned rollers of one standard design to press the tangential belt to the spindle whorl(s) - Google Patents

Abstract

The whorls on a spinning frame are driven by a tangential belt which is held in contact by spring tensioned rollers. These rollers have a lip to keep the belt in line. The brackets have bearings to support the roller with lip at the bottom, at one side, and to suspend the roller, with lip at the top, on the other side. The bracket pref. has centrea holes for attachment to the support stand. The bracket has wings to support a bearing. This has a spindle on which the crosspiece of the roller is supported at one side of the bracket, and suspended at the other side. The rollers face has a lip to prevent the belt from moving out of line, and to keep the belt in contact with the whorls. The roller are placed between the whorls. ADVANTAGE - All the rollers and brackets are alike, along the frame.

Description

The invention relates to a tensioner pulley arrangement Tangential belt drives for spindles of spinning and twisting machines according to the preamble of claim 1.

The tensioners are used to press a tangential belt onto the Spindles from spinning and twisting machines. They are in pairs on the Fastened ends of an elastic holder and each between two Spindles arranged. In particular during the assembly of a Machine during test runs after the tangential belt has run out up or down due to not yet precisely aligned tensioning rollers prevent the tensioning pulleys from being attached to their running pulley Provide thrust collars for the tangential belt. For the practice it is sufficient if the tensioning rollers have a thrust collar on one side and this thrust collar alternately on the top and bottom of the tensioners is available.

Such tensioning rollers are known from DE 31 06 307 A1. The disadvantage of this tensioner roller arrangement is that for each holder two differently designed tensioners are required to the collar for the tangential belt alternately above and below to be able to provide on the tensioners. With asymmetrical training the running disc, which is inevitably the case when idlers with made of plastic for the sake of Energy saving with a rotating shaft is the However, the disc is not so stable if the thrust collar on the shorter side of the running disk is arranged.

The invention has for its object a tensioner pulley arrangement to find, in which a single tension pulley design is sufficient to alternating top and bottom a thrust collar for the tangential belt to be able to provide.

This task is performed in a generic arrangement by characterizing features of claim 1 solved and in one second solution by the characterizing features of claim 2.

Both solutions have in common that only tensioners are used, where the thrust collar for the tangential belt on the longer one Side of the asymmetrical disc is arranged. From This produces plastic tensioners uniform stability.

The solution according to claim 1 offers the particular advantage that the support pieces are identical parts.

The two embodiments of the invention are in the Drawings are shown and are described in more detail below.

Show it

Fig. 1, the tension rollers with its holder,

Fig. 2 shows the attachment of the holder and the assignment of the tensioning rollers to the spindles,

Fig. 3 shows an arrangement of the tension rollers,

Fig. 4 shows another arrangement of the tension rollers.

Fig. 1 shows an elastic holder 1 , which has support pieces 2 at its ends. On the angular support pieces 2 , which are alternately fastened at the bottom and top of the holder 1 , a tensioning roller 3 is mounted on the fly. This definition of the support pieces 2 results in an alternating standing and hanging arrangement of the tensioning rollers 3 .

The tensioning roller 3 consists of a bearing unit 4 and a running disk 5 , which is fastened with an asymmetrically arranged web 6 on a stub shaft 7 of the bearing unit 4 . The asymmetrical arrangement of the web 6 is necessary so that the running disk 5 can completely cover the bearing unit 4 , but the tensioning roller does not have a greater height than is necessary for the belt drive. On the longer side, the running disk 5 , which is printed against a tangential belt 8 ( FIG. 2), has a thrust collar 9 for the tangential belt 8 . For manufacturing reasons, only a thrust collar 9 is sensible on the running disk 5 as a plastic injection-molded part.

In Fig. 2 the attachment of the elastic holder 1 by means of an angle piece 10 on the machine, not shown, and the assignment of the tension rollers 3 to spindles 11 with the tangential belt 8 is shown.

FIG. 3 shows an arrangement of the tensioning rollers 3 , in which one tensioning roller alternately has the thrust collar 9 at the bottom and the next one has the thrust collar on the top of the running disk 5 , corresponding to the illustration in FIG. 1.

Deviating from this, the tensioning rollers 3 in FIG. 4 are fastened in the same direction on the support pieces 2 . In this arrangement according to claim 2, the holder 1 are screwed alternately with standing and hanging idlers 3 on the machine. In this solution, too, the tangential belt is alternately protected at the top and bottom by run-up collars 9 against running out.

After completion of the assembly, that is to say after the tensioning rollers 3 have been aligned, the tangential belt 8 rotating at a speed of up to 30 m / s does not usually start up against the starting collars 9 .

Claims (2)

1. Tensioner pulley arrangement for a tangential belt drive of spindles for spinning and twisting machines with an elastic holder fastened in its central region to the machine, at the free ends of which on each support piece a tensioning roller pressing the tangential belt onto the spindles, which has a thrust collar for the tangential belt, is so overhung that the running of the tangential belt is alternately limited at the top and bottom by thrust collars, characterized in that the tensioning rollers ( 3 ) with a rotating shaft form the thrust collar ( 9 ) on the side of a bearing unit ( 4 ) covering an asymmetrically fixed running pulley ( 5 ) and that the support pieces ( 2 ) on the holder ( 1 ) alternately below and above for a standing and a hanging arrangement of the tensioning rollers ( 3 ) are attached. 2. Tensioner pulley arrangement for a tangential belt drive of spindles for spinning and twisting machines with an elastic holder fastened in its central area to the machine, at the free ends of which on each support piece a tensioning roller pressing the tangential belt onto the spindles, which has a thrust collar for the tangential belt, is so overhung that the running of the tangential belt is alternately limited at the top and bottom by thrust collars, characterized in that the tensioning rollers ( 3 ) with a rotating shaft form the thrust collar ( 9 ) on the side of a bearing unit ( 4 ) covering an asymmetrically fixed running pulley ( 5 ) and that the holders ( 1 ), on the support pieces ( 2 ) of which the tensioning rollers ( 3 ) are fastened in the same direction, are alternately fastened to the machine with standing and hanging tensioning rollers ( 3 ).