Precise straightening device for seamless tube machining

Abstract

The utility model discloses a precise straightening device for seamless tube processing, which comprises a supporting seat, a convex opening is arranged on the surface of the supporting seat, a hydraulic cylinder is fixed on the outer surface of the convex opening, an arch-shaped strip frame is fixed on the end face of a driving rod of the hydraulic cylinder, straightening wheels are arranged on the inner side surface of the arch-shaped strip frame, and the straightening wheels are arranged on the outer side surface of the arch-shaped strip frame. A seamless pipe is clamped between the straightening wheels, the six sets of arched strip frames are distributed, motors are fixed to the outer surfaces of the arched strip frames at the upper ends and the lower ends of the six sets of arched strip frames, driving bevel gears are fixed to the outer portions of driving shafts of the motors, and driven bevel gears are fixed to the outer surfaces of wheel shafts of the straightening wheels. The seamless tube rolling and straightening device can conduct rolling and straightening on a seamless tube, extrusion is comprehensive, and the seamless tube is precisely straightened during straightening, so that local bending is avoided.

Description

Technical Field

[0001] The utility model relates to the field of seamless pipe processing, and more specifically, to a precision straightening device used for seamless pipe processing. Background Art

[0002] When processing seamless pipes, the steel pipes are inevitably bent due to the use of rolling forming, and they need to be straightened using a straightening device;

[0003] In the prior art, CN218424908U discloses a seamless steel pipe straightening device, comprising a straightening mechanism and a support frame, wherein a working case is welded to the upper end of the support frame, a positioning mechanism is threadedly connected to the left end of the top surface of the support frame, a seamless steel pipe is inserted into the straightening mechanism, and the support frame is installed on the bottom surface of the straightening mechanism;

[0004] The straightening roller mechanism in the above-mentioned patent is staggered in distribution, and the surface extrusion straightening is not comprehensive during extrusion, and the straightening precision is poor, which is easy to cause unreachable local bending. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a precision straightening device for seamless pipe processing, which adopts six groups of distributed extrusion and rolling mechanisms to roll and straighten the seamless pipe, fully extrude it, and precisely straighten it during straightening without causing local bending.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A precision straightening device for seamless pipe processing comprises a support seat, a protrusion is arranged on the surface of the support seat, a hydraulic cylinder is fixed on the outer surface of the protrusion, an arched frame is fixed on the end face of the driving rod of the hydraulic cylinder, a straightening wheel is arranged on the inner surface of the arched frame, a seamless pipe is clamped between the straightening wheels, six groups of the arched frames are distributed, a motor is fixed on the outer surface of the upper and lower arched frames, an active bevel gear is fixed on the outside of the driving shaft of the motor, and a driven bevel gear is fixed on the outer surface of the wheel axle of the straightening wheel, six groups of extrusion and rolling mechanisms are adopted to roll and straighten the seamless pipe, the extrusion is comprehensive, and the pipe is precisely straightened during straightening without causing local bending.

[0008] Furthermore, the driving bevel gear is meshed with the driven bevel gear, and the driven bevel gear and the driving bevel gear are meshed with each other.

[0009] Furthermore, the six groups of hydraulic cylinders are distributed on the outer surface of the protrusion, and the inner end driving rods thereof fix the upper surface of the arched frame.

[0010] Furthermore, the support seats are arranged in two groups, and the arched bars are arranged on the inner surface of the protrusion.

[0011] Furthermore, a concave annular groove is arranged on the outer surface of the straightening wheel, and the concave annular groove is fitted on the outer surface of the seamless pipe.

[0012] Furthermore, the straightening wheels are evenly distributed on the inner surface of the arched frame.

[0013] Furthermore, the length of the arched frame is not less than two meters.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) Six groups of distributed extrusion rolling mechanisms are used to roll and straighten the seamless pipe. The extrusion is comprehensive and the straightening is precise without causing local bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a side cross-sectional view of the overall structure of the utility model;

[0018] Figure 3 It is an enlarged view of point A of the present utility model.

[0019] Description of the numbers in the figure:

[0020] 1 support seat, 2 convex mouth, 3 hydraulic cylinder, 4 arched bar frame, 5 straightening wheel, 6 seamless pipe, 7 motor, 8 driving bevel gear, 9 driven bevel gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1-3A precision straightening device for seamless pipe processing, comprising a support seat 1, a convex opening 2 is arranged on the surface of the support seat 1, a hydraulic cylinder 3 is fixed on the outer surface of the convex opening 2, an arched bar frame 4 is fixed on the end surface of the driving rod of the hydraulic cylinder 3, a straightening wheel 5 is arranged on the inner surface of the arched bar frame 4, a seamless pipe 6 is clamped between the straightening wheels 5, and the arched bar frames 4 are distributed in six groups, a motor 7 is fixed on the outer surface of the upper and lower arched bar frames 4, a driving bevel gear 8 is fixed on the outside of the driving shaft of the motor 7, a driven bevel gear 9 is fixed on the outer surface of the wheel shaft of the straightening wheel 5, the driving bevel gear 8 is meshed on the driven bevel gear 9, and the driven bevel gear 9 and the driving bevel gear 8 are meshed with each other;

[0024] Six groups of hydraulic cylinders 3 are distributed on the outer surface of the protrusion 2, and the inner end driving rods are fixed to the upper surface of the arched frame 4. The length of the arched frame 4 is not less than two meters. Two groups of support seats 1 are set. The arched frame 4 is set on the inner surface of the protrusion 2, which is convenient for surrounding and extruding the seamless pipe 6 in a circle, convenient for rolling extrusion and straightening, and easy to use (when in use, the cylinder 3 drives the arched frame 4 to contract, and drives the straightening wheel 5 to extrude the outer surface of the seamless pipe 6. The active bevel gear 8 is driven by the motor 7 to rotate, which can transmit the driven bevel gear 9, and can drive the straightening wheel 5 to extrude the seamless pipe 6 to rotate and advance. The outer surface of the straightening wheel 5 is provided with a concave annular groove, and the concave annular groove is attached to the outer surface of the seamless pipe 6. The straightening wheel 5 is evenly distributed on the inner surface of the arched frame 4. When passing through all the surrounded seamless pipe 6 surfaces, it can extrude and straighten, and the straightening is tight).

[0025] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A precision straightening device for seamless pipe processing, comprising a support seat (1), characterized in that: The surface of the support seat (1) is provided with a protrusion (2), and a hydraulic cylinder (3) is fixed on the outer surface of the protrusion (2). The end surface of the driving rod of the hydraulic cylinder (3) is fixed with an arched bar frame (4), and the inner surface of the arched bar frame (4) is provided with a straightening wheel (5). A seamless pipe (6) is clamped between the straightening wheels (5). The arched bar frames (4) are distributed in six groups, and the outer surfaces of the upper and lower arched bar frames (4) are fixed with a motor (7), and the driving shaft of the motor (7) is fixed with an active bevel gear (8), and the outer surface of the wheel axle of the straightening wheel (5) is fixed with a driven bevel gear (9).

2. A precision straightening device for seamless pipe processing according to claim 1, characterized in that: The driving bevel gear (8) is meshed with the driven bevel gear (9), and the driven bevel gear (9) and the driving bevel gear (8) are meshed with each other.

3. A precision straightening device for seamless pipe processing according to claim 1, characterized in that: Six groups of hydraulic cylinders (3) are distributed on the outer surface of the protrusion (2), and the inner end driving rods thereof are fixed on the upper surface of the arched bar frame (4).

4. A precision straightening device for seamless pipe processing according to claim 1, characterized in that: The support seats (1) are arranged in two groups, and the arched bars (4) are arranged on the inner surface of the protrusion (2).

5. A precision straightening device for seamless pipe processing according to claim 1, characterized in that: The outer surface of the straightening wheel (5) is provided with a concave annular groove, and the concave annular groove is fitted on the outer surface of the seamless pipe (6).

6. A precision straightening device for seamless pipe processing according to claim 1, characterized in that: The straightening wheels (5) are evenly distributed on the inner surface of the arched bar frame (4).

7. A precision straightening device for seamless pipe processing according to claim 1, characterized in that: The length of the arched bar frame (4) is not less than two meters.

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