SU1704186A1 - Method of manufacture of multispeader cylindrical grids and device to implement it - Google Patents

Abstract

The invention relates to electrovacuum production and can be used for the manufacture of generator lamps. The aim of the invention is to increase the yield. WITH

Description

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using the winding mechanism, the wire is wound on a cylindrical composite mandrel and then straightened wound crossbars by intermixing the mandrel parts in opposite directions in the axial direction, after which compensation sections are made in the form of bending directed to the axis mandrels. When welding over the tails, a tensile force of 5-15% of the straightening force is applied to the cross-arms. A device for making multi-traverse cylindrical grids comprises a split cylindrical mandrel 2 with grooves

The invention relates to electrovacuum production and can be used for the manufacture of generator lamps.

The whole invention is an increase in the yield of nets.

The drawing shows a device for the manufacture of multi-traverse cylindrical grids with the performance of compensatory sections in the middle of the grid fabric.

The device comprises a spindle 1 with a mandrel 2 fixed in it, which is made detachable from two coaxial parts. On the mandrel 2 along the generatrix there are grooves in which the traverse 3 is located. The grooves on the mandrel are always as much as the traverse in the fabricated mesh. At the ends of the mandrels, rings with protrusions 5 are fixed for engagement of half-loops 6 of two adjacent cross-arms 3. The grooves under the cross-beams are also made on the rings k, and they coincide with the grooves on the mandrel. Fixed knives 7 are fastened on the mandrel, the grooves under the crossheads are also made there. Perpendicularly to the mandrel in the plane of the cutting edge of the fixed knife 7 is the plane of the cutting edge of the movable knife 8. On the mandrel in the section of the removed technological bridges there is a groove 9. Perpendicular to the groove 9 the mandrel is a freely rotating roller 10, which is mounted on the piston rod 11 of the pneumatic actuator 12 and under the action of szh

along the generatrix for placement of the wire traverses 3- Rings with protrusions 5 are attached to the ends of the mandrel for hooking the half-loop 6 of two adjacent traverses. Fixed knives 7 are fixed to the mandrel, opposite of which movable knives 8 are mounted with the possibility of interaction. Opposite the fixed knives there is also a roller 10 mounted with the possibility of moving in the radial direction relative to the mandrel and intended to bend traverse. Straightening the traverse takes place when the parts of the cylindrical mandrel slide apart. 2 sec. f-ly, 1 ill.

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In addition, air can move in the groove 9 and bend the traverse. The pressure of the compressed air in the pneumatic actuator 12 is adjusted individually for each type of mesh, and the force on the roller 10 is selected in the range of 20-150 N.

The method is carried out as follows.

Using the coiling mechanism, the wire is wound from the coil by reciprocating the stacker on a cylindrical mandrel. In this case, the half loops of the two adjacent cross-arms are hooked onto the projections made on the ends of the mandrel.

After winding and securing the ends of the wire, the traverses are aligned by their stretching. To do this, move the parts of the mandrel in the axial direction with a certain force in opposite directions.

After straightening, the traverse force is removed and, using a roller 10, the traverse is applied with a constant force directed along the radius of the mandrel, and the bends in the area of technological jumpers located at the junction of the mandrel joints are executed on the traverse.

The roller is moved to the mandrel by means of a pneumatic actuator 12, which provides a force acting on the traverse 1-5 kg. Since the mandrel is made with an annular groove 9, which is formed at the junction of its parts, all the bends are directed along the radius of the mandrel, with the longest traverses being designed

Nuts more deeply, and the shortest are bent less. All the rest will be bent by an intermediate value, that is, the excess lengths of each traverse will be compensated and the traverse on the mandrel will become the same length without noticeable deformations in them.

As soon as the mandrel makes one turn, its rotation is stopped and the pneumatic actuator 12 is connected to the atmosphere, the roller 10 at the same time moves to its initial position under the action of the spring 13.

The wires are fixed along strands or spirals on the traverses. Apply a force to the cross-arms, equal to 5-15% (depending on the type of mesh) on the force when straightening. The welding mechanism is turned on, wound and welded with grass by themselves or by a spiral.

After welding over the hinges or spirals in the area of technological jumpers, where the bends are made, the cross beams are cut. Technological jumpers are removed and the grids are removed from the mandrels.

Claims (2)

The implementation of compensatory sections on the cross-arms in the manufacture of multi-traverse cylindrical grids allows a significant increase in the yield yield of the grids, as it brings the traverse welding process - the helix to the optimum. This is achieved by significantly reducing the tensile force in the traverse when welding the helix. Invention Formula one . A method of manufacturing multi-cylindrical grids, with 0 five about five 0 traversing coils wound onto a composite cylindrical mandrel with each half-loop hooked over the protrusions at opposite ends of the cylindrical mandrel, aligning the treads by applying forces to displace the mandrel parts along the axis in opposite directions, welding paths to the traverses and removing technological jumpers by cutting the traverse in the region of the joining of the parts of the mandrel, characterized in that, in order to increase the yield, after straightening, the stretching force of the traverse is removed, on the traverse in the field of technological processes The yoks perform compensatory areas in the form of bends directed to the axis of the mandrel, and when welding stitches, a tensile force of 5-15% of the straightening force is applied to the cross-arms. 2. An apparatus for manufacturing multi-parallel cylindrical grids, comprising a spindle with a cylindrical mandrel mounted on it, made of two coaxial parts, the ends of which have ledges, a wire winding mechanism with a hooking mechanism, half-loops for the shoulders, a straightening mechanism of the cross-arms and a welding unit , characterized in that, with the aim of increasing efficiency, an annular groove is made in the mandrel in the region of the joint of its parts, opposite to which there is a roller whose axis is parallel to the axis; - a reference mounted to move perpendicular to the axis of the mandrel.