RU2515711C1 - Straightening device for small-diameter wire - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: device comprises an unreeling unit, a straightening unit implying multiple bends in a rotating frame, and pulling rolls. A rectangular assembled insert is set inside the rotating frame; there is an inner wavy hollow hole in the insert and it is formed by the connection of two insert plates with their inner surfaces being fitted by wavy grooves.

EFFECT: improved quality of small-diameter wire straightening, reduced time for readjustment.

2 dwg

Description

The invention relates to the field of production and processing of small diameter wire, from which rod parts (pins, rods, staples, etc.) are used, used in instrumentation and radio electronics products.

Known for the correct device for bar material [and.with. SU No. 195426, IPC B21F 1/02, publ. 05/04/1967], containing a rotating body with mounted in it radially adjustable bearings and a curved spiral-shaped spiral placed in them through which the straightened material is pulled. The spiral is planted in a composite holder (support), mounted coaxially with the housing and having a slot eccentrically located relative to the axis of rotation of the housing, in which the disk is fixed by means of a latch. In turn, the disk, the axis of rotation of which in the socket of the cage is parallel to the axis of rotation of the housing, has an opening for the passage of the helix displaced to its own edge and radial drilling. The required deflection of the spiral is achieved by rotating the disk through the slot of the holder using a rod introduced into the radial drilling of the disk. To prevent twisting of the bar material, a pressure unit is installed at the outlet of the correct housing, consisting of a clamp, a spring and an adjusting nut.

The disadvantages of the known device are the design complexity, the inconvenience of threading the wire into a wave-like curved spiral, and high-quality straightening of the wire with a diameter of less than 1 mm is also not provided.

A device for straightening the wire [a.s. SU No. 155480, IPC B21F 1/02, publ. 01/01/1963], containing a rotating frame with sleeves offset relative to one another, in which a spiral is mounted. The wire is pulled through a spiral, winding it onto a drum rotated by an electric motor. The displacement of the bushings is adjusted with screws. This device provides high-quality straightening wire with a diameter of less than 2 mm.

The disadvantages of this device are the difficulty of adjusting the magnitude of the bend of the wire, and high-quality straightening of the wire with a diameter of less than 1 mm is also not provided.

Also known from the prior art is a method of straightening a welding wire [patent RU No. 2275982, IPC B21F 1/02, B21D 3/02, B21C 43/04, publ. May 10, 2006], including pulling the wire through coaxial holes located at the base of the hollow cylinder, during which a portion of the wire inside the cylinder is squeezed to the side of the cylinder axis by a predetermined amount. Before dressing, at least one sleeve is put on the wire inside the cylinder with a gap, and the cylinder cavity is partially filled with abrasive powder. In this case, the cylinder is rotated at a variable speed about its axis.

This design does not provide high-quality dressing of wire of small diameters.

The closest technical solution to the claimed is a wire dressing device [application RU No. 94020181, IPC B21F 1/02, publ. 06/20/1996], containing the unwinding mechanism, two sequentially located rotating on different sides of the frame with adjustable in amplitude and pitch wave-shaped hollow tubes, pulling rollers and mechanism segments.

The disadvantages of this technical solution are the design complexity due to the presence of two drives in it for rotating the frames in different directions, and high-quality straightening of the wire of small diameters is also not provided.

The objective of the proposed technical solution is to create a simple design of a straightening device for small wire diameters, from which rod parts (pins, rods, staples, etc.) used in instrumentation and radio electronics are made.

The technical result is to improve the quality of dressing wire of small diameters and reduce the time of readjustment.

The technical result is achieved in that in a device for straightening small-diameter wire containing an unwinding mechanism, a mechanism for straightening a wire by multiple bends in a rotating frame and pulling rollers, new is that inside the rotating frame there is a rectangular assembly insert with an internal wave-shaped hollow hole formed by the connection of two liner plates, on the inner surfaces of which a wave-shaped groove is made.

The difference of the claimed device from the closest analogue lies in the fact that due to the fact that inside the rotating frame there is a rectangular precast insert with an internal wave-shaped hollow hole formed by the connection of two wave-shaped grooves made on the inner surfaces of the insert plates, the quality of straightening wire of small diameters and changeover times are reduced.

Thus, the above characteristics that are distinctive from the prototype allow us to conclude that the claimed technical solution meets the criterion of "novelty." Signs that distinguish the claimed technical solution from the prototype are not identified in other technical solutions and, therefore, provide the claimed solution with the criterion of "inventive step".

The invention is illustrated using graphic materials.

Figure 1 shows the inventive device for straightening wire of small diameters.

Figure 2 is a section aa of the frame with the liner.

A device for straightening a wire of small diameters contains an unwinding mechanism (not shown), an electric motor 1, kinematically connected by a belt drive 2 to a frame 3, pulling rollers 4. The straightening mechanism of the wire by multiple bends contains a frame 3, inside which a rectangular assembly insert with an internal wave-like hollow hole. The rectangular prefabricated insert consists of two rectangular plates 5 and 6, on the inner surfaces of which there are wave-shaped grooves with a variable pitch and amplitude, the plates 5 and 6 are connected by screws 7 and pins 8. The speed of the electric motor is determined using a tachometer 9.

A device for straightening wire of small diameters works as follows.

Before starting operation of the device, a rectangular precast insert is assembled: two rectangular plates 5 and 6 of the insert with wave-shaped grooves are connected by screws 7 and pins 8 so that a wave-shaped hollow hole is formed inside the insert. A rectangular assembly insert is installed inside the frame 3. The motor 1 is turned on and the frame 3 is rotated, inside which a rectangular assembly insert with an internal wave-like opening is mounted. The frequency of rotation of the frame 3 is controlled using a tachometer 9. The wire from the coil (bay) of the unwinding mechanism by pulling rollers 4 is pulled through a wave-shaped hollow hole formed inside the rotating insert of the frame 3.

The readjustment of the wire straightening device takes place due to the change of the assembly insert. A set of interchangeable prefabricated liners consists of a set of parts with different magnitudes of the amplitude and pitch of the internal hollow hole, which, in combination with a variable frame speed, provides a different number of kinks of the wire during the dressing process. The required dressing mode is selected depending on the diameter and material of the wire.

This device for editing small diameters has the following advantages: a wide range of wire sizes and materials (from 0.1 to 1 mm); simple and relatively cheap editing mechanism design; quick threading of a new batch of wire into the correct device; high-quality wire dressing due to the adjustable number of bends in the dressing process; quick change-over by changing the liner when using a new wire diameter.

Claims (1)

A device for straightening a wire of small diameters, comprising an unwinding mechanism, a mechanism for straightening the wire by means of multiple bends in a rotating frame and pulling rollers, characterized in that a rectangular assembly insert with an internal wave-like hollow hole formed by the connection of two insert plates on the inner surfaces is installed inside the rotating frame which are made wavy grooves.

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