Steel bar straightening and shearing machine with multiple rotating hubs

Abstract

The invention discloses a steel bar straightening and shearing machine with multiple rotating hubs. The shaft ends on the outer sides of the rotating hubs I (14, 14') of the straightening mechanisms on both sides of the straightening and shearing machine are provided with rotating hub gears (37, 37'); and the inner parts of the rotating hubs I (14, 14') are provided with the straightening rollers (15, 15'). Three rotating hubs I (14) are arranged in three holes of two rotating hub rotating racks I (30, 30') after being provided with a set of bearings on one end and two sets of bearings and a retainer cup (47) on the other end, wherein the left and the right rotating hubs I (14, 14') with the same parameters are arranged on the same axis. A piston rod of a hydraulic cylinder I (48) is hinged with a lever (50) by a shaft I (49); and the other end of the lever (50) is provided with a movable knife I (53) corresponding to a fixed knife I (21). The straightening and shearing machine is compact in structure, reliable in property and easy in adjustment; the problem of material waste in the prior art caused by the continuous shearing which frequently happens in the shearing process of products is solved, in this way, the economic and suitable steel bar straightening and shearing machine products with high straightening quality are provided to users.

Description

technical field [0001] The invention relates to the technical field of wire rod processing and treatment, in particular to a multi-rotary hub steel bar straightening and cutting machine. Background technique [0002] With the rapid development of the wire processing industry, the technical requirements for straightening and cutting machines for steel bars are also constantly improving. The existing technologies and products for straightening and cutting machines for steel bars are far from meeting the requirements of the rapid development of the wire processing industry. Existing steel bar straightening and cutting machine has the following problems: one, in the prior art and products, the hyperboloid straightening roller (being called for short straightening roller) that is set on the straightening hub (or straightening cylinder) of the steel bar straightening and cutting machine Roller) or straightening module (referred to as straightening block), the distance in the direc...

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Problems solved by technology

[0002] With the rapid development of the wire processing industry, the technical requirements for straightening and cutting machines for steel bars are also constantly improving. The existing technologies and products for straightening and cutting machines for steel bars are far from meeting the requirements of the rapid development of the wire processing industry.

Existing steel bar straightening and cutting machine has the following problems: one, in the prior art and products, the hyperboloid straightening roller (being called for short straightening roller) that is set on the straightening hub (or straightening cylinder) of the steel bar straightening and cutting machine Roller) or straightening module (referred to as straightening block), the distance in the direction of the straightening hub axis is designed according to the corresponding model: such as LGT6 / 12, GT6 / 12, GT3 / 8, etc. according to the maximum steel bar diameter, and It is fixed, regardless of the size of the diameter of the steel bar, the strength of the steel bar has only one deformation zone of the same size, the adaptability to the steel bar is very poor, and the straightening quality is not high

2. The hyperboloid surface of the straightening roller is designed according to the maximum steel bar diameter of the corresponding model such as LGT6 / 12, and the angle between the axis of the straightening roller and the axis of the steel bar is fixed and cannot be adjusted. If the steel bar with a small diameter is straightened The contact surface becomes smaller, and evenly divided small bends will be pressed on the surface of the steel bar, which will reduce the straightening quality

3. The straightening block with large holes is used for large steel bar diameter, and the straightening block with small hole is used for small steel bar diameter. The hole diameter of the straightening block should be replaced at any time according to the diameter of the steel bar, such as GT3 / 8, GT6 / 12 every It is time-consuming and labor-intensive to replace once, which increases auxiliary man-hours and reduces production efficiency

4. There is only one straightening hub in the direction of the steel bar axis, which makes the straightened steel bar axis direction easy to distort

5. The sizing of LGT threaded steel bar straightening and cutting machine series products is not accurate, and the cutting error is large

6. GT steel bar straightening and cutting machine series products, the receiving trough on the fixed-size material rack, the width of the receiving trough must be adjusted every time a steel bar of a diameter is replaced, and the sizing plate moves on the material receiving trough or determines the fixed length. If there is an obstacle in the position of the ruler, the obstacle must be removed when the ruler is determined, which is both troublesome and a waste of man-hours

Seven, the power of the cutting mechanism is high, it is labor-intensive and wastes energy

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