SU1050580A3 - Machine for making non-woven net material from warp and weft threads - Google Patents

Abstract

A machine for producing non-woven flat nettings by laying one or more transverse threads helically across a plurality of parallel warp threads jointly advancing on a stationary support, the cross section of which is at least substantially circular so that a tubular web of netting is formed. The tubular web is slit axially into two or more individual nettings which is reshaped to a flat state by passing over stationary guide means. The guide means comprises for each netting a bail or hoop-like member, the ends of which are located in the vicinity of the points in which the tubular web is slit, and which extends forwardly from the support and preferably in continuation thereof. The netting is deflected outwardly and rearwardly (as compared to the direction of travel of the tubular web) over the bail member to a winding or feeding roller having a rectilinear axis and preferably located rearwardly of the tube slitting means. Between the roller and the bail member there may be provided a curvilinear bow roller and/or additional guide bars joined to the bail member and shaped so that relatively large zones at the edges of the netting are additionally deflected by the bars.

Description

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The invention relates to an apparatus for making a mesh nonwoven material from warp and weft threads connected at intersection points.

A known installation, comprising a frame with a support having a circular cross section for forming a mesh cloth in the form of a cylindrical tube, means for directing the threads, a device for cutting material longitudinally into two webs, pull rollers for moving the material, means for directing the material, rollers containing the material.

Obtained by the mother; al formed in the form of a grid having rectangular cells. To prevent the shape of the cells from distorting when cutting the material into two webs, means for moving the web in the same direction as when forming the grid in the form of a cylindrical tube with simultaneous stretching to the sides and moving the central one are required. parts of the grid in the axial direction.

However, such processing techniques cause the installation to increase in size. ..

The purpose of the invention is to obtain a mesh material with a rectangular cell shape.

This goal is achieved by the fact that the means for guiding the material is made in the form of a pair of arcuate elements arranged symmetrically on both sides of the device for cutting the material and fixed Hc. on its level, each element on both sides has corner posts connecting it with staninry and straps fixed at one end at the junction of the corner posts and arcuate element, and the other on the bed, while the corner stands and straps are fitted with adjusters length, and each arcuate element is tilted forward along the movement of the web, and its central point is as far as possible from the plane of the arrangement of the device for cutting material, while the axes of the corresponding pair of zero rollers are located below the arc-shaped el ement

In addition, each corner stand (Signed by a supporting tie, fixed at one end to the frame and having a length adjuster.

Each mesh fabric formed after cutting is guided to the winding point along the arcuate element with simultaneous alignment and deployment of the grid in the plane. During the alignment, the mesh should be in the direction from the axis of the cylindrical support, which makes it possible to reduce the size of the installation.

FIG. 1 given installation, front view; in fig. 2 - the same, side view.

The installation has a frame comprising a base 1 and the supports 2 and 3 connected with it, connected in the upper part by transverse and longitudinal beams 4 and 5.

In the central part, four columns 6 are suspended from the beams 4, carrying a circular support 7 consisting of a plate 8 and an annular element with heating and insulating means 9 and 10. A cooling means 11 with fans 12 is installed above the ring. installed additional cooling element 13.

Two concentric guide rings 14 and 15 with radial slots are attached to the bottom side of the plate 8 for guiding the warp threads 16, which are supplied from stationary bqbin (not shown). The warp threads are guided through flexible tubes 17 assembled in section by clamps 18 and 19 uniformly distributed around the circumference of the guide rings 14 and 15.

The weft yarns 20 and 21 are fed through the guides 22 and 23, which are connected to the ends through the hinged couplings 24. rotating hollow rod 25 installed in bearings coaxially with support 7. Rod 25 is rotated from the shaft of the electric motor 26 through the pulley 27. On the rod, a paired yarn feeder 28 is made, made in the form of two hollow weeping, extending from the rod in opposite directions, inside which weft yarns are wound, wrapping around the warp yarns to form a tubular mesh material with rectangular cells, the dimensions of which depend on the ratio between the speed of the warp threads and the circumferential. rotation of yarn thread yarns. The warp and weft threads can be interconnected at cross section nepe-i points by any known method.

For cutting material, for example, into two flat webs, are the devices .29, which in this case are installed on both sides of the material and are made in the form of heated cutting elements inserted between the warp threads and the weft cutting threads as the material moves. Devices for cutting material mounted on brackets 30, mounted using racks 31 on horizontal beams 32.

The means for guiding the cut material is made in the form of a pair of arcuate elements 33 arranged symmetrically on both sides of the tool 29 for cutting the material and fixed at its level. Each arcuate element 33 on both sides has corner posts 34 connecting it with supports 2 and 3 of the frame, and straps 35 fixed at one end at the junction of corner posts 34 and the arc-shaped element, and the other on the supports of the frame. The corners of the uprights 34 and of the stitches 35 are provided with length adjusters 36, and each corner uprights are provided with a support 37, fixed at one end on the bed support and having a length adjuster. . In addition, corner posts 34 are connected to arcuate elements 33 by means of extensions 38, Two curved rollers 39 are installed below the arcuate elements; freely rotating on the axes 40, using cardan joints 41 are mounted with ends on the supports. The rollers 39 serve to align the mesh material moving along the arcuate elements. Under each roller 39, pull rollers 42 and 43 are installed, rotated in opposite directions and serving to move material passed between them. Next, the guide and take-up rollers 44 and 45 are arranged. The formed mesh material in the form of a tubular sleeve is cut by the device 29 into two flat webs, each of which is fed upwards and outwards to the corresponding arcuate element 33, along which the webs move to the roller 39. zones of the material, constituting approximately one third of the total width of the web, pass along corner posts 34. By selecting the appropriate curve, the vises of the above means achieve equality of the paths traveled by the threads again from the cut zone and to vali-. 42,43, which ensures the preservation of the shape of the grid cells.

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Claims (2)

1. INSTALLATION FOR MANUFACTURING A NETWORK NONWOVEN MATERIAL FROM BASES AND DUCK THREADS, containing means for guiding threads, devices for cutting material, pairs of pulling rollers, means. for the direction of the material containing the guide rollers, and the frame, which distinguishes with me that, p. the purpose of obtaining a mesh material ί with a rectangular cell shape, the means for guiding the material is made in the form of a pair of arcuate elements located symmetrically on both sides of the device | for cutting the material and fastened at its level, each element on both sides having corner posts connecting it to the bed, and ties attached at one end at the junction of the corner posts and the arcuate element, and the other on the bed, while the corner posts and ties are equipped with length adjusters, and each arcuate element is inclined forward along the movement of the blade, and its central point is as far as possible from the plane of the device for cutting material, while the axis of the corresponding pair of pulling Alikov located below the central point of arc "8 shaped element. 2. Installation according to claim 1, with the fact that each corner stand is equipped with a support (screed fixed at one end on the bed and having length adjusters. In FIG. 1 given the installation, front view; in FIG. 2 is the same side view. The installation has a bed, including the base 1 and its associated 5 supports 2 and 3, connected in the upper part by transverse and longitudinal beams 4 and 5. In the central part to the beams 4 are suspended four columns 6, bearing 10, a circular support 7, consisting of a plate 8 and an annular element with heating and insulation means 9 and 10. Above the ring, cooling means 11 with fans 12 are installed. Above the means 11, an additional cooling element 13 can be installed. Two concentric guide rings 14 and 15 with radial slots for guiding the warp threads 16, which are fed from stationary brbins (not shown), are attached to the lower side of the plate · 8. The warp threads are guided through the flexible 25 tubes 17, assembled in the section by clamps 18 'and 19, evenly distributed around the circumference of the guide rings 14 and 15. The weft threads 20 and 21 are fed through "0 guides 22 and 23, which are connected to the ends through the articulated couplings 24. a rotating hollow rod 25 installed in the supports coaxially with the support 7. The rod 25 is rotated from the shaft of the electric motor 26 35 through the pulley 27. A paired thread guide 28 is made on the rod, made in the form of two hollow arms extending from the rod in opposite directions, inward of which weft threads are directed, entwining warp threads with the formation of a tubular mesh material with rectangular · cells, the sizes of which depend on the relationship between the speed · 45 of the warp threads progressing and the circle of rotation of the threads yarners yarn weft. The warp and weft threads can be • connected to each other at cross-points · · · 'section in any known manner. ‘For cutting material, for example, into two flat blades, .29 tools are used, which in this case are installed on both sides of the material and made in the form of heated cutting elements inserted between warp threads and cutting weft threads during material movement. Devices for cutting material are mounted on brackets 30 mounted 60 with racks 31 on horizontal beams 32. The means for guiding the cut material is made in the form of a pair of arcuate elements 33 located 65 symmetrically on both sides of