SU553854A1 - Reed for travelling-wave shed loom - Google Patents

Description

(54) BERDO FOR A MILLING MACHINE WITH A WAVE-MOVABLE MOVING YEAR

one

The invention relates to a textile machinery industry, namely to a reed for a weaving machine with a wave-like movable throat.

A fabric-forming device for a weaving machine is known, which contains a reed formed by a set of plates with teeth mounted on a shaft, a set of plates for the passage of plates with teeth and a dividing grid of separator plates and washers.

However, in this device, the reed and separation bar are assembled together: the plates with the teeth, the plates for the passage of the plates with the teeth, and the separator plates 1J are installed alternately.

There is a reed for a loom containing a set of surfing discs with teeth mounted on a shaft so that the teeth of the discs are screwed, spacer rings located between the surfing discs, and locking elements in the form of split rings located between groups of surfing discs 2.

The weft plier is moved by the action of the surfing discs in the throat of the warp threads, while resting on a cylindrical surface formed by one of the disc cavities. Since the outer diameter of the split ring is equal to the diameter of the disk cavities, the warp threads of the lower shed branch in the place of installation of the split ring do not fall below the disk cavities and are subject to intense abrasion from the weft yarn plotter.

In this case, increased breakage of the main threads is observed. In addition, the fastening of the split ring on the flats of the shaft is unreliable.

15 The purpose of the invention is to reduce the number of breaks in the warp threads.

Claims (2)

This is achieved by the fact that the outer diameter of the split ring is less than the diameter of the 20 circumference of the troughs of the surfing discs, with an annular groove on the shaft in which the split ring is installed, and the diameter of the mounting hole of the split ring is less than the diameter of the shaft. In addition, the split ring has grooves located on the circumference of the bore. When this split ring, it is advisable to perform at least three grooves. FIG. 1 depicts the proposed reed; in fig. 2 - section of the Byrd assembly; in fig. 3 - section A - A of FIG. 2; in fig. 4 - locking element; in fig. 5 is a flow chart of the weft yarn plotter. The reed is formed by a set on the shaft 1 of surf discs 2 with teeth 3–5 intended for moving and fitting the weft thread 6 (FIG. 5) to the fabric underlay 7 laid by the weft thread plotter 8, and the tooth 3 is used to move the weft thread plotter to channel 9 and in the throat of the warp threads 10, 11. Distance rings 12 are installed between the surf wheels 2, and fixing elements in the form of split rings 13 are installed between the groups of surf disks for ease of assembly. The outer diameter of the circumscribed circle C of the split ring 13 is smaller the diameter of the circle C of the hollows of the surfing discs 3, which ensures the creation of gaps between the hollows of the adjacent discs 2 for the passage of the warp threads 10 of the lower branch of the pharynx. The diameter of the mounting hole C of the split ring 13 is smaller than the diameter D) of the shaft. On the shaft there are made annular grooves 14, in each of which a split ring 13 is installed. Around the circumference of the ring bore there are three notches 15, one of which is diametrically opposite to the cut of the said ring. The device works as follows. When the shaft 1 rotates with the cleaning discs 2, the teeth 3, in contact with the weft thread plotter 8, move it in the channel 9 and in the throat of the warp threads 10, 11. Along the plotter, the weft thread 6 moves and nails 3 to 5 surf discs 2 to the edge of the fabric 7. In this case, the threads of the base 10 of the lower branch of the pharynx enter the spaces between the troughs of the surfing discs and are not subject to abrasion from the side of the moving plotter 8 of the weft thread. Due to the fact that the outer diameter of the split ring is smaller than the diameter of the troughs of the surfing discs, there are gaps between the hollows of the surfing discs necessary for inserting into them the warp threads of the lower branch of the throat, which eliminates the abrasive effect of the weft wire on the warp threads. The presence of three grooves at the bore of the split ring facilitates installation and eliminates the occurrence of permanent deformations of the ring, distorting its shape and, consequently, causing it to cut into the fabric at the site of the split ring. Thus, the use of the proposed Byrd reduces the number of breaks in the warp threads, increases the grade of the fabric and simplifies the assembly of Byrd. Claim 1. Berd for a loom with a wave-like movable throat, containing a set of surfing discs with teeth mounted on a shaft so that the corresponding teeth of the surfing discs are screwed, spacer rings located between the surfing discs, and fixing elements in the form of split rings located between groups of surfing discs, characterized in that, in order to reduce the number of breaks in the warp threads, the outer diameter of the split ring is smaller than the diameter of the circumference of the surf breakers , Wherein the shaft an annular groove in which is installed the split ring, the diameter of the fitting hole of the split ring is less than the shaft diameter. 2. Berdo under item 1, characterized in that the split ring has recesses located around the circumference of the bore. 3.Berdo on PP. 1 and 2, characterized in that the split ring has at least three notches. Sources of information taken into account in the examination 1. USSR author's certificate number 173656, cl. D 03 D 47/26, 1964. 2. Patent of the GDR No. I0709I, 86c, 17, 1974. Fi. one 13 to 13 31 12 14 hr /one FIG. 2 12 13 five FIG. J 13 fi &.