RU2010653C1 - Method of weaving meshes - Google Patents

Abstract

FIELD: mechanical engineering. SUBSTANCE: set of round-cross-section spiral spaced two mesh pitches apart are accurately oriented in the guide in the position which they are to occupy in the mesh. The spirals are cut to the preset length. The spiral shaping mechanism is displaced the pitch of the mesh, and another set of mesh spirals is formed during which the spirals rotate and, one by one going out of the contact with mesh forming mechanism cutters, are weaved into the previously-formed spirals, and in the first spiral of the previously-formed mesh fragment moving strictly in the direction of the spiral axes. The last set of spirals is cut to the preset length, and the ready-to-use fragment of the mesh is shifted in the direction perpendicular to the axes of the spirals in such a position that the last spiral of the newly manufactured mesh fragment may be weaved into the first spiral. EFFECT: extending operating capabilities. 2 dwg

Description

 The invention relates to the production of braided metal nets and allows you to weave a fine mesh for the manufacture of wire material from wire with a diameter of d≥0.12 mm and the ratio of the diameter D of the spiral to the diameter of the wire 8-10.

 A known method of weaving grids of wire spirals, consisting in the fact that the shaping mechanism containing a screw, made in the form of a sleeve with a through screw groove with a step equal to the step of the spiral, and a knife located inside it, the calibrating end part of which has a cross-sectional profile of the spiral, a spiral of a flattened cross section is formed, which, rotating, continuously leaves the knife and is woven into the finished fragment of the mesh for a given length, then the spiral formation stops and it is cut into this length, then the finished mesh fragment is moved to the grid step and the cycle of the described operations is repeated.

The main disadvantages of this method are the following:
low productivity of mesh production, due to the sequential formation and interweaving of spirals ("spiral by spiral");
the impossibility of manufacturing a fine mesh mesh from a round spiral with parameters (d 0.12 mm - 0.4 mm; D 1.2 - 4 mm) suitable for the manufacture of wire material, due to the small stiffness of the spiral from a thin wire and the absence of the device, carrying out this method of weaving, precise fixation of the position of the spiral into which the next spiral is woven.

 This method by technical nature is closest to the claimed and adopted as a prototype.

 The aim of the invention is to increase the productivity of manufacturing nets and enabling weaving of a fine mesh suitable for the manufacture of wire material.

 This goal is achieved by the fact that the method of weaving a mesh, including the formation of a spiral, its rotation and weaving into a finished fragment of the mesh, immediately form a block of spirals of circular cross section located relative to each other by two mesh steps (mesh step is the distance between the axes of adjacent spirals, located in positions convenient for mutual weaving), which are fixed in the guide in this position, and cut to a predetermined length, then the spiral shaping mechanism is shifted by a mesh pitch and still block spirals are formed, which, forming, rotate, and, continuously sliding from the knives of the forming mechanism, are woven into the previously formed block of spirals and into the first spiral of a previously made mesh fragment, moving in the guide strictly in the direction of the axes of the spirals, then the last block of spirals is cut off to a predetermined length and the finished mesh fragment is displaced in the direction perpendicular to the axes of the spirals, strictly in such a position that the first spiral of the finished mesh fragment can be tangled last spiral newly manufactured mesh fragment described cycle is then repeated, and the grid spacing at its plexus less than the distance between adjacent spirals in the finished grid, when introduced adjacent spirals in close contact with each other.

 In addition, in order to obtain a mesh with a flattened cross-sectional profile of the spiral, the finished mesh can be passed through rolls that flatten it to a given size and at the same time tension the mesh and shift it by the required value.

 In the proposed method, a mesh fragment is made in two steps, and the fragment dimensions can be large and determined by the diameter of the spiral and the number n (number of spirals in the block) of simultaneously woven spirals, which is determined only by the acceptable dimensions of the machine for weaving nets and can be very large. For example, the length of a fragment of a coarse mesh (Rabitsa mesh) may be 1.5-2 mm. Therefore, the performance of the proposed method can be several tens of times higher than the productivity of the method taken as a prototype.

 The implementation of spirals of circular cross section, precise fixation of the position of the first spiral of the finished mesh fragment and n spirals formed simultaneously at the beginning of the production cycle of the mesh fragment, as well as the strict direction of n spirals woven into them, makes it possible to produce a fine mesh mesh suitable for the manufacture of wire material.

 Signs that distinguish the claimed technical solution from the prototype are not identified in other technical solutions.

 In FIG. 1 shows a diagram of a device for implementing the proposed method; in FIG. 2 - a device for weaving nets manually.

 The spiral forming mechanism 1 (see Fig. 1) first forms from the wire 2 a block of spirals 3 of circular cross section, which are precisely fixed using a guide 4 (shown conditionally) with a step equal to two mesh steps. Fragment 4 of the grid, made in the previous cycle, is installed using the mechanism 6 for shifting the finished fragment of the grid and the guide 7 in such a position that its first spiral 8 occupies the position in which it is intertwined with the last spiral 9 of the manufactured fragment of the grid.

 The mechanism 1 of the formation of spirals after the formation and segments of the spirals 3 is shifted by the mechanism 10 to the grid pitch relative to the spirals 3. In this position, the mechanism 1 (Fig. 1) forms the next block of spirals 11, which, rotating, continuously come off the knives (in FIG. 1) are not shown) of mechanism 1, being woven into spirals 3. After the formation of a new mesh fragment, the spirals 11 are cut to the required length and then mechanism 6 shifts the finished mesh to such a position that the first spiral of the new mesh fragment is replaced by spiral 8.

 Then the mesh production cycle is continuously repeated.

 The possibility of practical application of the proposed method for the manufacture of a fine mesh suitable for the manufacture of wire material can be easily verified. To do this, it is enough to prove the possibility of weaving one spiral 11 immediately into two spirals 3, precisely fixed in the position that they occupy when weaving a mesh fragment.

 Stretched spirals with a circular cross section with a diameter of D 3.5 mm were made of steel wire with a diameter of 0.35 mm. Moreover, the step of stretching the spiral was equal to its diameter.

 A mesh strip was manually woven from these spirals with a width of 150 mm (the width of the mesh is equal to the length of the spiral), for which a simple device was used (see Fig. 2), which allows us to simulate the proposed method.

 Two spirals 3 (see Fig. 2) were fixed in the guide 4, made in the form of a channel, in the position that they occupy in the finished mesh, using the needles 12. The diameter of the needles is selected so that the needles do not interfere with the weaving of the spiral 11, which was woven manually.

 The use of the invention allows, in comparison with the prototype, to increase the productivity of weaving nets by tens of times and provides the possibility of manufacturing a fine mesh suitable for the manufacture of wire material. (56) Copyright certificate of the USSR N 1463374, cl. In 21 F 7/02, 1989.

Claims (1)

 METHOD OF WEAVING NETWORKS, including shaping a spiral by means of a shaping mechanism, in which the spiral rotates, continuously sliding from the knife of the shaping mechanism, cutting it, shaping a subsequent spiral, in which it is woven into the first spiral of the finished fragment, characterized in that, in order to increase manufacturing productivity nets and providing weaving of a fine mesh, carry out the simultaneous shaping of a block of spirals with a circular cross section, located one rel relatively different at a distance equal to 2 S, where S is the distance between the axes of two adjacent spirals at the moment of their mutual interweaving, they are fixed in the guide element in the position in which they are intertwined with adjacent spirals, and after the segments of these spirals the spiral forming mechanism is shifted by a distance S and form another block of spirals, which, moving in the guiding element along the longitudinal axis of the spiral, are woven into the spirals of the previously manufactured block, and after pieces of these spirals the finished fragment of the set ki are displaced in a direction perpendicular to the longitudinal axis of the spirals to a position that ensures the interweaving of the last spiral of the subsequent mesh fragment into the first spiral of the finished mesh fragment.

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