SU761630A1 - Selvage-twining device to shuttleless loom - Google Patents

Description

The invention relates to weaving production and is intended for use on shuttleless looms for the production of fabrics with perevivochnymi edges of low-stretch yarns. five

A non-trimming device to a shuttleless loom is known, which contains a linking mechanism connected with the machine drive and a support washer, which holds the holders of packages for edge threads [1].

The disadvantage of this device is that, coming down from the package, the threads are immediately interchanged and then get into correcting rollers, compensators and nitenyat, _g _15 inhabitants. This leads to excessive bending and mutual friction of the threads, which is especially harmful in the case of processing low-stretch threads (glass, coal, boron, etc.). 20

It is also known an edge winder to a weaving machine containing a winding disc associated with a machine drive, the axis of which is parallel to the main shaft of the machine, and a support washer carrying 25 package holders, thread guide for inserting the hem threads in the fabric forming area and for each thread a tension compensator, tensioner and guide eye [2]. Edging threads Smaty - 30

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roll with rotating flange coils.

The disadvantage of this device is that when winding the threads from the two-flange coils in the direction perpendicular to their axis, the tension of the threads changes depending on various factors, such as the change in friction between the axes and the coils on which they rotate, from the change in winding diameter on coils, on the quality of the winding. In the process of tissue production at each stop of the machine, the rotation of the coils by inertia around the axes causes a sharp decrease in the tension of the edge filaments and their twisting. As a result, it is impossible to maintain a constant tension of the edge filaments; the stability of the formation of leno edges in the fabric is not ensured. In addition, in the process, low-stretch threads, passing through the thread guide, even if it is equipped with two end holes for each of the two hem threads, are entangled and, due to their increased fragility, are cut off, which reduces the reliability of the device.

The aim of the invention is to improve the reliability of the device in the work and improve the quality of the edge when using low-tensile threads.

761630

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This goal is achieved by the fact that in the device the package holders are rigidly fixed on the support washer, and their axes are parallel to the axis of the washer and lie in a plane passing through this axis. In this case, the thread guide for inserting edge filaments into the area of tissue formation is installed coaxially with the support washer and is made in the form of a tube divided by a longitudinal partition, and the guide eyes are located along the axes of the package holders.

The drawing schematically shows the proposed device.

The device contains a levee disc 1 and a support washer 2 associated with a machine drive (not shown). On the support washer 2, the holders of the packages 3 are installed and the bracket 4 is fixed, carrying spring compensators 5 tensioning the threads with eyes 6 and tensioners 7. In the drawing they are shown with disk-shaped ones, but tensioners of a different design can also be used. Coaxially with the bearing washer 2 is installed thread guide 8, made in the form of a tube having a longitudinal partition 9, separating the cavity of the tube into two channels for each of the threads. The end of the tube 8 is brought into the area of tissue formation and ends with two holes 10 and 11. The thread 12 passes through the guide hole 13 mounted on the axis of the package holder 3.

The device works as follows.

Under the action of tension generated by the wage into the fabric, the edge threads 12 descend from the ends of the packings 3, passing through the guide eyes 13, the tensioners 7, the eyes 6 of the compensator 5, the tubular thread guide 8, where they are separated by a partition 9, protecting them from tangling, and through the holes 10 And And are introduced into the area of tissue formation and further through

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The winding disc 1 is brought to the edge of the fabric 14. For each turn of the winding disk 1, the bearing washer 2 also makes one revolution, allowing the edge threads to coil in the zone between the winding disk 1 and the thread guide 8.

The proposed device improves the reliability of weaving machines and improves the quality of the edge when using low-stretch threads.

Claims (1)

Claim Edge stitching device to shuttleless loom containing a machine drive connected with a machine drive, a winding disk whose axis is parallel to the main shaft of the machine, and a support washer, package carrier, thread guide for inserting the edge threads into the fabric forming area and for each thread a tension compensator, a thread guide for inserting the edge threads into the fabric forming area and for each thread a tension compensator, a thread guide for inserting the edge threads into the fabric forming area and for each thread a tension compensator, a thread guide for inserting the edge threads into the fabric-forming area and for each thread a tension compensator, a thread guide for inserting the edge threads into the fabric-forming area and for each thread the tension compensator, the thread guide for inserting the edge threads into the fabric-forming area and for each thread the tension compensator, the thread guide for inserting the edge threads to the fabric-forming area and for each thread the tension compensator, the thread guide for inserting the edge threads into the fabric-forming area and for each thread the tension compensator, the thread guide for inserting the edge threads into the fabric forming area and for each thread a tension compensator, threads, and a stretcher, a thread guide for inserting the edge threads to the fabric forming area and for each thread a compensator eye, characterized in that, in order to improve the reliability of the device in operation and improve the quality of the edge when using low-stretch yarns, the holders of packages are rigidly strengthened bearing ^washer? and their axes are parallel to the axis of the washer and lie in a plane passing through this axis, while the thread guide for inserting the edge filaments into the tissue-forming area is set coaxially with the support washer and made in the form of a tube divided by a longitudinal partition, and the guide eyes are located along the axes of the package holders.