Machine for straightening metal threads

Abstract

The invention discloses a machine for straightening metal threads. The machine comprises a rack, an operation control mechanism, a transmission mechanism, front straightening mechanism and a back straightening guide mechanism. The machine for straightening the metal threads is characterized in that the front straightening mechanism comprises a rotary drum and a straightening wheel; the straightening wheel is provided with a straightening rod; one end of the straightening rod is in a threaded rod shape; the other end face of the straightening rod is an arc surface; a plurality of screw holes are arranged in the straight line on the two side walls of the rotary drum symmetrical about the axial centerline of the rotary drum; the screw holes are in stagger arrangement at equal intervals; the threaded rod of the straightening rod and the rotary drum are in screwed connection; a plurality of straightening rods are in staggered and embedding arrangement at equal intervals; the end face of the arc surface of the straightening rod is beyond the axial centerline of the rotary drum; and the degrees of the included angles formed by the intersections of the tangency point lines of all adjacent straightening rod arc surfaces and the axial centerline of the rotary drum are equal. The machine for straightening the metal threads has the advantage that the adjustment of the depth or the angle of the straightening rod in the rotary drum is achieved by screwing and unscrewing the straightening rod, so that the application ranges of fine metal threads needing to be straightened are widened.

Description

technical field [0001] The invention relates to the technical field of straightening metal wires, in particular to a straightening device for fine metal wires, in particular to a metal wire straightening machine. Background technique [0002] Metal wires are generally straightened before they are cut, and then the cuts are processed into finished products. Especially for metal wires used in precision instruments and precision medical materials or equipment, it is necessary to straighten the crimped metal wires before cutting them to eliminate their internal stress and ensure the integrity of the cut materials processed into products. quality. Most of the straightening mechanisms of the traditional metal wire straightening machine adopt the front straightening method of multiple straightening rollers nested relative to each other and the rear straightening method of several pairs of double guide wheel traction. This straightening method is gradually eliminated because of it...

AI Technical Summary

Problems solved by technology

But it has following defect and deficiency: the one, straightening roller is fixed in the cylinder, and the height position of straightening roller is fixed in the cylinder, and the wire running trend line between its several straightening rollers is a sine wave trend line (Static trend line diagram) is also fixed accordingly, that is to say, the angle formed by the intersection of the line between adjacent straightening rollers and the center line of the roller shaft is a fixed value

Because the height position of the straightening roller in the drum cannot be adjusted, and because different types of wires have different requirements for the amplitude of the sine wave trend line when straightening, the scope of application of the straightened wire type (wire diameter) is limited. Its scope of application is very narrow

The second is that since the straightening rollers are fixed (mostly welded) in the drum, if the straightening rollers are damaged, it will be very difficult to maintain. a greater waste

Third, most of the existing straightening rollers are made of metal materials with strong rigidity (such as stainless steel, copper, etc.). Scratches or damages that make straightened wires unacceptable, resulting in wastage of raw materials

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