SU996552A1 - Shedding mechanism of loom for making wire netting - Google Patents

Description

The invention relates to devices for the manufacture of wire mesh and can be used in the manufacture of matrices of memory devices in the electronics industry.

In the manufacture of grids of memory devices used machines in which the formation of the pharynx is ensured by alternately raising even and. odd warp threads, or alternately breeding these threads in opposite directions.

A known mechanism of the formation of the pharynx on the loom for the manufacture of wire mesh, containing placed on the machine tool for moving the main threads with vertically spaced grooves for them, In the mechanism of the pharynx is formed using a drum recruited from. profile and additional disks, during the rotation of which alternately even and odd main threads rise up from the neutral position £ 1].

The disadvantage of this mechanism is the complexity of its manufacture with the distance between the threads oc2 *

0.5 mm and less are new due to the low stiffness of the additional discs.

A pharynx formation mechanism is also known, containing fixed guide plates connected in a package, in the grooves of which a pharyngeal disc is placed [2].

The disadvantage of this mechanism is the complexity of its manufacture when changing the distances between the warp threads.

Closest to the proposed is the mechanism of the formation of the pharynx on the loom for the manufacture of '5 wire mesh, containing means placed on the machine for moving the main threads with vertically arranged grooves for them, ed (representing a vertically mounted plate with a horizontal row of holes for the main threads made in it each of the holes being symmetrically placed between the grooves, 25 and the grooves are closed with a length not less than the height of the pharynx. parts, the connector plane of each of which is located on the line of hole placement 30 The mechanism allows to expand the technological capabilities of machines for weaving grids of storage devices [3].

However, it is not reliable in operation and does not ensure the quality of manufactured nets. This is due to the fact that when closing the pharynx, all the main threads simultaneously lie on the wire being molded, which ¹ leads to its stretching and breaks * as well as to a violation of the integrity jq of the wire insulation.

The aim of the invention is to increase the reliability.

This goal is achieved in that the mechanism of the formation of the pharynx on a weaving machine for the manufacture of wire nets, comprising a clamp of the main threads and means for moving the main threads, made in the form of a vertically mounted plate, consisting of two parts, the plane of the connector of which passes through the axis of the holes between which are made vertical grooves, has throat limiters located between the clamps and the vertical plate 25, and the plane of the plate connector extends at an angle of к k. We determine the horizontal m from the relationship:

. (d + C) L —2bM ~ ’where d with b

On the

- diameter of the main threads;

- diameter of weft threads;

- the distance between the main threads;

- the distance between the clip and the plate;

- the distance between the clamp and the path of movement of the plotter machine.

FIG. 1-4 depict the moments of the process of shedding.

The mechanism of pharynx formation contains a means for moving the main threads, which is a vertically mounted plate made of two parts 1 and 2 with vertical grooves 3 for one group of threads 4 (even) and holes 5 for another group of threads 6 (odd). In this case, the location line of the holes 5 has an angle with a horizontal of at least (<3 + s) L.

where h is the plane

- the angle of the connector plate;

- the diameter of the threads 4 and

- diameter of the weft thread for the manufacture of nets;

- the distance between the threads 4 and 6 of the warp;

basics;

L is the distance between the clamps and the plate;

M is the distance between the nip clamps and the trajectory of the machine spacers, and the first and last holes are separated from the edge of the grooves 3 by a distance h greater than the diameter of the wire of the weft thread 7. The grooves 3 are closed with a height of not less than the height of the throat (Fig. 1). The main threads 4 and 6 are fixed on the holder 8th are tensioned by the tensioning device 9. When removing the upper part of the plate 1, the clip 10 and the upper stop of the throat 11, the holder 8 is installed on the machine. In this case, the main threads 4 fall into the grooves 3, and the main threads 6 - into the holes 5 of the lower part of the plate 2 and the clamp 10.

For the formation of the first pharynx, the plate (1 and 2) rises up, while the group of the main threads 6 lying in the holes 5 rises, creating a pharynx, and the threads 4 freely pass through the grooves 3, remaining in the neutral position (Fig. 2). The weft thread 7 is introduced at this time into the weaving zone located between the clip 10 and the lower limiter of the throat 12.

i

For the formation of a reverse pharynx when forming the mesh, the plate (1 and 2) goes down (Fig. 3). At the same time, the lower limiter of the throat 12 is brought up so that the threads 6 involved in the formation of the half-winding of the winding fall below the neutral position in which the threads 4 are located by an amount; at which the half-winding of the wire of the weft yarn is fully formed! The warp threads b alternately reach the lower limiter 12, sequentially forming the wire mesh with each warp thread 6 in the direction of increasing the angle of the plate connector line (1 and 2). At the same time, through the sequential laying of 6 warp threads, the wire is formed by a half-turn net behind a half-turn without clamping the entire length of the wire, which excludes its stretching and breaks. The winding half-coil thus formed is twisted using a comb and clamped by the pressure plate 10. After this, the lower stop of the pharynx 12 is removed, the weft thread 7 is introduced into the formed pharynx, the upper stop of the pharynx 11 is lowered so that the threads 6 involved in the formation of the next half-thread windings, rose above the neutral position in which the threads 4 are located, by the amount at which the half-winding through the weft thread is fully formed. After this, the plate (1 and 2) rises up. The warp threads 6 alternately reach the upper limiter of the throat 11, alternately forming the next half-turn of the winding, ..

In order to avoid stretching the wire of the daily thread during forming, it is necessary to observe the condition that when fully forming one half-turn (laying the nth thread of the 6th warp in a neutral position before aligning with the threads 4) NEAR (P + 1) ~ I THREAD 6 BASES ONLY: started molding. This condition is ensured by the slope of the line of the connector plate (1 and 2). the height difference H, which provides the necessary slope of the line of the connector plate (1 and 2), is equal (Fig. 4):

where H is the height difference between adjacent holes 5;

d is the diameter of the threads 4 and 6 of the warp;

C is the diameter of the wire of the weft thread 7 for the manufacture of nets;

L is the distance from the wire mesh to the vertically mounted plate; ''

M is the distance from the wire mesh to the weaving zone. Since the distance between the warp threads 6 is 2b, the angle of inclination of the plate connector line (1 and 2) is:

. And. (<3 + 01.

The location of the first and last holes 5 at a distance th from the edge of the grooves 3, exceeding the diameter of the wire of the weft thread 7, allows you to form the minimum necessary pharynx with the upper and lower position of the plate (1 'and 2).

Thus, providing an angle of inclination of the location line of Holes 5 for warp threads 6 and introducing the upper 11 and lower 12 throat limiters allow sequential molding of each half-turn of the winding in turn with each warp thread, reduce mechanical stresses on the wire, which eliminates stretching and breaks of the formed wires and, therefore, improves the quality of woven mesh.

Claims (3)

logical capabilities of machines for weaving grids of memorized Gz devices. However, it is not reliable in operation and does not ensure the quality of the manufactured grids. This is due to the fact that when the throat closes, all the main threads simultaneously lie on the formable wire, which leads to stretching and breakages, as well as to the integrity of the wire insulation. The aim of the invention is to increase the reliability of operation. The goal is achieved by the fact that the mechanism for the formation of the throat on a loom for making wire grids contains the priming of the main yarns @ and the means for moving the main yarns, made in the form of a vertically mounted plate consisting of two parts, the slot of which passes through the axis the openings between which the vertical grooves are made, has limiters for the size of the pharynx, the clamps placed by the clamp and the weight of the ticking plate, and the plane of the connector of the plate runs at an angle to the horizontal line determined from the following relationship: - MliUCH, argN -. diameter of the main threads; weft diameter; distance between the main thread; the distance between the clamp and the plate; the distance between the clamp and the path of the plotter. FIG. 1-4 depict the moment of the shedding process. The mechanism of the throat formation contains a means for moving the main threads, which is a vertically mounted plate made of two parts 1 and 2 with vertical grooves 3 for one group of threads 4 (even) and holes 5 for the other group of threads b (not even). When this line is located holes 5 has an angle with the horizon of at least,. 4 / arcl &apos; f-jp where the angle of the plate's plane of the connector; d is the diameter of the threads 4 and 6 of the warp; c is the diameter of the weft thread for making the nets; B is the distance between threads 4 and 6 of the base; L is the distance between the clamps and the plate; M is the distance between the clamps and the trajectory of movement of the machine plotters, the first and the last holes are separated from the edge of the grooves 3 to the distance h exceeding the wire diameter with the thread 7. The grooves 3 are closed with a height not less than the shed height (Fig. 1). The main yarns 4 and 6 are fixed on the holder 8 fe by the tensioning device 9. When removing the upper part of the plate 1, the mode 10 and the upper limit opening of the shed 11, the holder 8 is mounted on the machine. At the same time, the main threads 4 fall into the grooves 3, and the main NII b - into the holes 5 of the lower part of the plate 2 and the clamp 10. The center formation of the first shed of the plate (1 and 2) rises up, with this group of main threads b lying in the holes 5, rises, creating a throat, and the threads 4 freely pass through the slots 3, remaining in the neutral position (Fig. 2). The wire 7 is introduced at this time into the weave zone located between the presser 10 and the lower limiter of the pharynx 12. For the formation of the back pharynx when the mesh is formed, the plate (1 and 2) goes down (Fig. 3). Simultaneously, the lower limiter of the pharynx 12 is moved up so that the yarns b, which are involved in forming the half winding, fall below the neutral position, in which the yarns 4 are located, the maximum value | at which complete forming of the half turn of the weft wire is provided; The warp b threads alternately reach the lower limiter 12, sequentially forming the wire of the mesh with the base thread b in the direction of increasing the angle of the connector line of the plate (1 and 2). At the same time, the wires of the mesh are half-rolled after half-turn without forming clamping the entire length of the wire, which eliminates its stretching and breaks. The semi-turn of the winding thus formed is inserted by means of a comb and clamped by a pressure plate 10. After this, the lower limiter of the pharynx 12 is removed In this case, the formed yarn 7 is inserted into the formed shed, the upper limiter of the shed 11 goes down so that the yarn b, participating in the molding of the next half winding, rises above the neutral position in which the yarn 4 is located, by the amount at which A complete molding of the weave wire thread is ensured. After that, the plate (1 and 2) rises upward. The warp threads of the warp alternately reach the upper limiter of the shed 11, alternately forming the following winding semi-thread. f To avoid stretching the wire. when forming the weft yarn, it is necessary to observe the condition that when full f (fmovka one semi-thread (laying n-th thread 6 of the base in a neutral position before combining with yarn 4) adjacent (n + 1) - thread b basis only; KO: and molding. This condition is ensured by tilting the slot line of the plate (1 and 2). The height difference is H, which provides the necessary slope of the line of the plate connector (1 and 2 is equal to (Fig. 4): (a + c) L where H is the difference height between adjacent holes 5; d is the diameter of the threads 4 and b of the base; c is the diameter of the wire of the weft thread 7 for making grids; The distance from the wire mesh to the erotically mounted plastic; the distance from the wire mesh to the weave zone, Since the distance between the warp threads b is 21), the angle of inclination of the connector line of the plate (1 and 2) is equal to .. H () L :. The location of the first and last holes 5 at a distance tt from the edge of the grooves 3 greater than the diameter of the wire of the weft yarn 7 allows forming the minimum required shed when the plate is in the upper and lower position (1 and 2). Thus, providing the angle of inclination of the line for positioning the holes 5 for the base threads and inserting the vertical 11 and lower 12 zev limiter allows for successively forming each half-turn of the winding alternately with each base thread, reducing the mechanical loads on the wire, which eliminates stretching and Broken wire breaks and, consequently, increases the quality of woven meshes produced. The invention The mechanism of the formation of the pharynx on the machine for manufacturing wire grids, contains the clamping of the main threads and the means of moving the main threads, made in the form of a vertically mounted plate consisting of two parts, the plane of the connector which passes through the axes of the holes between which the vertical grooves are filled, About tl and ch and y with the fact that, in order to improve the reliability of work, it has limiters of magnitude Eev, placed between the clamp and the rotating plate, and the plane of the connector layer passes at an angle V to the horizontal, determined by the following relation: (47, e "rct 2m diameter of the main yarns; diameter of the weft yarns; distance between the clamp and the plate; distance between the warp threads; distance between the clamp and the movement path machine builders. Sources of information taken into account during the examination 1. USSR author's certificate 437818, class D 03 C 7/04, 1-972. 2. Authors certificate of the USSR 495705, cl. Q 11 C 5/02, 1974. i 3. USSR author's certificate 602628, cl. D 03 C 15/02, 1976 (prototype). 1.2