Anti-torsion traction device for reinforcing bar hoop bending machine

Abstract

The invention discloses an anti-torsion traction device for a reinforcing bar hoop bending machine. The anti-torsion traction device comprises a traction main shaft of which one end is connected with a power device and hinged with and supported on a traction board, a main traction wheel arranged at the other end of the traction main shaft, a compaction wheel positioned above the main traction wheel, and a down-pressing mechanism connected with the compaction wheel, wherein the main traction wheel is arranged between two groups of straightening wheel groups with the same height, so a dragged reinforcing bar passes through the main traction wheel and the two groups of straightening wheel groups and is formed into a cambered shape; and the compaction wheel pressed on the cambered reinforcingbar which is coiled through the main traction wheel. The anti-torsion traction device has the advantages that: the reinforcing bar moves between the main traction wheel and the straightening wheels in a circular arc path, so the reinforcing bar can release stress fully; and torsion can be avoided after the reinforcing bar is straightened and bent. By enlarging a contact area between the reinforcing bar and the main traction wheel, a slipping phenomenon during traction of the reinforcing bar can be avoided and the quality of the reinforcing bar can be improved; and the anti-torsion traction device has the advantages of simple structure, convenience for maintenance, conservation of energy consumption, stable work and low cost.

Description

technical field [0001] The invention relates to a steel bar hoop bending machine, in particular to an anti-twist traction device of the steel bar hoop bending machine. Background technique [0002] The steel bar bending machine is an automatic steel bar processing equipment that bends straight or coiled steel bars into different shapes. The steel bar bending machine includes: traction mechanism, straightening mechanism, bending forming mechanism and shearing mechanism. [0003] figure 1 It is the front view of the traction mechanism of the prior art steel bar hoop bending machine; figure 2 yes figure 1 cutaway view. [0004] Such as figure 1 , figure 2 As shown, the traction mechanism of the steel bar bending machine in the prior art includes: two traction shafts 13 equipped with traction wheels 5 that are arranged side by side with the same structure; Transmission mechanism; above the two traction wheels 5 are respectively provided with a pressing wheel 3, and the p...

AI Technical Summary

Problems solved by technology

[0006] First of all, the coiled steel bar passes through the traction mechanism and the straightening mechanism in a straight line, and the internal stress is not fully released after passing through the above two mechanisms, so the steel bar twists when it enters the bending mechanism for bending; secondly, the compression of the traction mechanism There is point contact between the lower wheel and the traction wheel and the steel bar, and slippage often occurs, which not only wears the traction wheel but also affects the accuracy of traction sizing, and directly affects the pass rate of the finished stirrup. At the same time, the structure of the existing traction mechanism is complex and the cost is high.

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