DE3942849C1 - Bottom apron holder for a spinning machine - incorporates a middle roll and bottom apron is driven from a bottom roll round 2 guide edges etc. - Google Patents

Abstract

A bottom apron holder is for a drawing system for a spinning machine and incorporates a middle roll. The bottom apron is driven from a bottom roll lying on the outside and runs round two guide edges formed by the ends of the sides of the bottom apron holder. A spring clip is formed at the holder side at the entry side. The holder is made of plastic and the spring clip features lateral extensions which engage in the side and render the clip inoperative. ADVANTAGE - The apron runs smoothly and evenly and is easy to replace.

Description

The invention relates to an apron holder for a spinning machine drafting system with a center roller around which the bottom strap is attached runs, which is driven by an external lower roller is and on both sides of the center roll around two deflection edges that runs from the ends of one leg of each angled at the bearing point of the center roll Lower strap holder are formed.

The invention relates to an apron holder for a spinning mill machine plug-in mechanism with a center roller, around which the bottom is strappy and that on both sides of the center roller by two deflection Edges running from the ends of one leg of each to the Bearing point of the angled lower apron holder are formed.

A well-known lower apron holder for a spinning machine Drafting system of the type mentioned in the preamble of claim 1 Lower apron holder when open on the drafting system and thus that Exchange of the apron. The bottom strap is through the lower apron holder shown is insufficient led, which can affect the spinning result. in the In extreme cases, the inclination of the Lower strap holder even for draining the lower strap.

It is with lower straps that wrap around their drive roller known (DE-OS 23 10 105), with a tension spring from the inside Keep straps under tension, causing the Strappy run is improved. The transfer of this solution on an externally driven bottom strap but that would Difficult to replace the bottom strap. With the features of claim 1, the task solved to form an apron holder so that the externally driven bottom strap runs smoothly and evenly and that it can be easily replaced. The characteristics of the Claims 3 and 4 ensure that the bottom strap also do not expire when significant lateral forces occur can.

The invention will now be described with reference to an example explained.  

Show it

Fig. 1 shows the Unterriemchenhalter incorporated in the machine;

FIG. 2 is removed for the replacement of Unterriemchens Unterriemchenhalter.

A central roller 2 is inserted into the lower apron holder 1, which is designed as a molded plastic part. The lower apron 3 touches the center roller 2 on both sides when the lower apron holder 1 is installed in the machine ( FIG. 1). In addition, the belt run is determined by two deflection edges 4 , 5 , which are formed by the ends of each leg 6 , 7 of the lower belt holder 1 angled at the bearing point of the center roll 2 .

A spring clip 8 is formed on the leg 6 on the input side in the thread running direction and tensions the lower strap 3 from the inside. The spring clip is reinforced by a leaf spring 9 .

The output side leg 7 forms a bridge for the lower apron compared to an upper apron 10 , which runs in a known manner around an upper roller 11 . The lower apron holder 1 snaps into a machine-fixed profile rod 12 with a profile on the leg 7 . The position in the machine is also determined by the support of the lower apron 3 and the intermediate roller 2 on a driving lower roller 13 . By means of this lower roller, the upper roller 11 , which is held in a support arm (not shown) with further upper rollers, is driven by the upper apron 10 via the lower apron.

In order to maintain the advantage of easy replacement of the lower strap despite the arrangement of the spring clip 8 , the spring clip is deactivated by latching projections 14 into recesses 16 in the leg 6 ( FIG. 2). When the lower apron holder 1 is reinserted into the drafting system, a stop 17 formed on the spring clip 8 comes into contact with the lower roller 13 , as a result of which the projections 14 are pushed out of the recesses 16 again.

The projections 14 on the spring clip 8 also serve to guide the lower strap 3 . Cams 15 are provided on the inner surfaces of the projections 14 , which prevent the lower apron 3 from running off even when considerable lateral forces occur.

Claims (5)

1. Lower apron holder for a spinning machine drafting system with a central roller, around which the lower apron runs, which is driven by an external lower roller and which runs on both sides of the central roller around two deflection edges, each of which is bent from the ends of one leg of the angled at the bearing point of the central roller Lower strap holders are formed, characterized in that a spring clip ( 8 ) is formed on the entry-side leg ( 6 ) of the plastic lower strap holder ( 1 ) and that on the spring clip ( 8 ) there are laterally projections ( 14 ) which are in the leg ( 6 ) engage and put the spring clip ( 8 ) out of operation. 2. lower apron holder according to claim 1, characterized in that a stop ( 17 ) is provided on the spring clip ( 8 ), the projections ( 14 ) for disengaging when inserting the lower apron holder ( 1 ) into its functional position by contact with the lower roller ( 19 ) brings. 3. lower strap holder according to claim 1 or 2, characterized in that the projections ( 14 ) form a side guide of the lower strap ( 3 ). 4. bottom strap holder according to claim 3, characterized in that on the inner surfaces of the projections ( 14 ) cams ( 15 ) are provided which overlap the bottom strap ( 3 ). 5. lower strap holder according to one of claims 1 to 4, characterized in that the spring clip ( 8 ) is reinforced by a leaf spring ( 9 ).