Straightening device for cold machining of stainless steel seamless tube

Abstract

The utility model discloses a straightening device for cold working of stainless steel seamless tubes, which relates to the technical field of seamless tube straightening and comprises a mounting seat, a left L-shaped plate and a right L-shaped plate are respectively arranged on the left side and the right side of an inner cavity of the mounting seat, and the transverse end faces of the left L-shaped plate and the right L-shaped plate are respectively and rotatably connected with an upper rotating shaft and a lower rotating shaft. The opposite ends of the upper rotating shaft and the lower rotating shaft are provided with an upper roller and a lower roller correspondingly, the outer ends of the left L-shaped plate and the right L-shaped plate are rotationally connected with first adjusting rods, and the upper end face of the left L-shaped plate and the lower end face of the right L-shaped plate are each provided with an adjusting mechanism. The adjusting mechanism comprises a fixed plate and a movable plate, the fixed plate is connected with a second adjusting rod through threads, the second adjusting rod is rotationally connected with the movable plate, a transmission rack is fixedly installed on the rear end face of the movable plate, and gears are fixedly installed at the outer ends of the upper rotating shaft and the lower rotating shaft. According to the scheme, the angle of the straightening rollers can be adjusted according to needs, the straightening requirement is met, and the application range of the seamless tube straightening device can be further widened.

Description

Technical Field

[0001] This utility model relates to the field of seamless tube straightening technology, specifically a straightening device for cold working of stainless steel seamless tubes. Background Technology

[0002] In the manufacturing process of seamless steel pipes, especially those with small apertures, the slender length of the pipe inevitably leads to bending and deformation, thus requiring a straightening machine for straightening. The common principle of a straightening machine is to use two straightening rollers, upper and lower, to press and straighten the steel pipe.

[0003] Existing straightening devices generally can only straighten steel pipes of one diameter and are mostly suitable for thicker pipes, with poor straightening effect on thinner pipes; moreover, the angle of the straightening rollers is not adjustable, which limits the application range of the straightening devices. To address this, we propose a straightening device for cold working of stainless steel seamless pipes. Utility Model Content

[0004] The purpose of this utility model is to provide a straightening device for cold working of stainless steel seamless pipes, so as to solve the problems mentioned in the background art. The existing straightening devices can generally only straighten steel pipes of one diameter and are mostly suitable for steel pipes with larger diameters. They are not effective in straightening small diameter pipes. In addition, the angle of the straightening rollers is not adjustable, which limits the scope of application of the straightening device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a straightening device for cold working of stainless steel seamless tubes, comprising a mounting base, wherein a left L-shaped plate and a right L-shaped plate are respectively arranged on the left and right sides of the inner cavity of the mounting base, an upper rotating shaft and a lower rotating shaft are respectively rotatably connected to the horizontal end faces of the left L-shaped plate and the right L-shaped plate, an upper roller and a lower roller are respectively arranged at the opposite ends of the upper rotating shaft and the lower rotating shaft, an adjusting rod is rotatably connected to the upper end of the left L-shaped plate and the lower end of the right L-shaped plate, guide rods are arranged on both sides of the adjusting rod, and an adjusting mechanism is arranged on the upper end face of the left L-shaped plate and the lower end face of the right L-shaped plate;

[0006] The adjustment mechanism includes a fixed plate and a movable plate. An adjustment rod is threadedly connected to the fixed plate, and the adjustment rod is rotatably connected to the movable plate. A transmission rack is fixedly installed on the rear end face of the movable plate. Gears are fixedly installed on the outer ends of the upper and lower rotating shafts, and the gears mesh with the transmission rack.

[0007] Preferably, the center lines of the guide rod and the adjusting rod are parallel to each other, and the center lines of the guide rod and the adjusting rod are both in the same longitudinal plane.

[0008] Preferably, the center line of the second adjusting rod is perpendicular to the upper and lower rotating shafts, and the second adjusting rod does not intersect with either the upper or lower rotating shafts.

[0009] Preferably, the longitudinal sections of the left L-shaped plate and the right L-shaped plate are both "L" shaped, and the left L-shaped plate and the right L-shaped plate are both located inside the mounting base.

[0010] Preferably, the gear is located on the outer side of the left L-shaped plate and the right L-shaped plate, and the gear is located in the middle of the mounting base.

[0011] Preferably, the upper roller and the lower roller are both located between the left L-shaped plate and the right L-shaped plate, and the center lines of the upper roller and the lower roller are at an angle.

[0012] Preferably, the lower end face of the lower rotating shaft is higher than the lower end face of the mounting base, and the lower rotating shaft and the upper rotating shaft are collinear.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This type of straightening device for cold working of stainless steel seamless tubes, by setting left L-shaped plates and right L-shaped plates at intervals inside the mounting base, can adjust the distance between the L-shaped plates, right L-shaped plates and mounting base through the guiding action of the guide rod when the adjusting rod is rotated, thereby meeting the needs of seamless tubes with larger and smaller diameters, and further improving the applicability of the seamless tube straightening device.

[0015] 2. This type of straightening device for cold working of stainless steel seamless tubes, by setting an adjustment mechanism, when it is necessary to adjust the rotation angle of the straightening rollers, i.e. the upper roller and the lower roller in the scheme, the adjustment rod two is rotated, so that the distance between the fixed plate and the movable plate changes. At this time, through the meshing action of the transmission rack and gear, the upper rotating shaft can be rotated, thereby driving the upper roller and the lower roller to swing at a certain angle, thus meeting the straightening needs of the seamless tube. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 For the present utility model Figure 1 Enlarged view at point M;

[0018] Figure 3 This is a front view schematic diagram of the present invention;

[0019] Figure 4 This is a top view of the present invention.

[0020] In the diagram: 1. Mounting base; 2. Right L-shaped plate; 3. Left L-shaped plate; 4. Adjusting rod one; 5. Guide rod; 6. Adjusting mechanism; 61. Fixed plate; 62. Adjusting rod two; 63. Movable plate; 64. Transmission rack; 65. Gear; 7. Upper rotating shaft; 71. Upper roller; 8. Lower rotating shaft; 81. Lower roller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figure 1-4 This utility model provides a technical solution: a straightening device for cold working of stainless steel seamless tubes, including a mounting base 1, with a left L-shaped plate 3 and a right L-shaped plate 2 respectively arranged on the left and right sides of the inner cavity of the mounting base 1, wherein the left L-shaped plate 3 and the right L-shaped plate 2 are arranged as follows: Figure 1 As shown. The longitudinal sections of the left L-shaped plate 3 and the right L-shaped plate 2 are both "L" shaped, and both the left L-shaped plate 3 and the right L-shaped plate 2 are located inside the mounting base 1.

[0023] Furthermore, an upper rotating shaft 7 and a lower rotating shaft 8 are rotatably connected to the horizontal end faces of the left L-shaped plate 3 and the right L-shaped plate 2, respectively. The lower end face of the lower rotating shaft 8 is higher than the lower end face of the mounting base 1, and the centers of the lower rotating shaft 8 and the upper rotating shaft 7 are collinear. An upper roller 71 and a lower roller 81 are respectively provided at the opposite ends of the upper rotating shaft 7 and the lower rotating shaft 8. The upper roller 71 and the lower roller 81 are both located between the left L-shaped plate 3 and the right L-shaped plate 2, and the center lines of the upper roller 71 and the lower roller 81 are at an angle.

[0024] Adjusting rods 4 are rotatably connected to the upper end of the left L-shaped plate 3 and the lower end of the right L-shaped plate 2. Guide rods 5 are provided on both sides of the adjusting rods 4. The center lines of the guide rods 5 and the adjusting rods 4 are parallel to each other and are in the same longitudinal plane. When straightening steel pipes with a larger diameter, rotating the adjusting rods 4 clockwise, and guided by the guide rods 5, reduces the distance between the left L-shaped plate 3 and the right L-shaped plate 2 and the mounting base 1, thereby increasing the vertical distance between the left L-shaped plate 3 and the right L-shaped plate 2, which is more conducive to the use of steel pipes with a larger diameter. Conversely, when straightening steel pipes with a smaller diameter, rotating the adjusting rods 4 in the opposite direction increases the distance between the left L-shaped plate 3 and the right L-shaped plate 2 and the mounting base 1, thereby reducing the vertical distance between the left L-shaped plate 3 and the right L-shaped plate 2, which is more conducive to the use of steel pipes with a smaller diameter.

[0025] Please see Figure 1 and Figure 2 An adjustment mechanism 6 is provided on the upper end face of the left L-shaped plate 3 and the lower end face of the right L-shaped plate 2;

[0026] The adjusting mechanism 6 includes a fixed plate 61 and a movable plate 63. An adjusting rod 62 is threadedly connected to the fixed plate 61. The centerline of the adjusting rod 62 is perpendicular to the upper rotating shaft 7 and the lower rotating shaft 8, and the adjusting rod 62 does not intersect with either the upper or lower rotating shaft 7. The adjusting rod 62 is rotatably connected to the movable plate 63. A transmission rack 64 is fixedly mounted on the rear end face of the movable plate 63. Gears 65 are fixedly mounted on the outer ends of both the upper and lower rotating shafts 7 and 8, and mesh with the transmission rack 64. The gears 65 are located on the outer sides of the left L-shaped plate 3 and the right L-shaped plate 2, and are also located in the middle of the mounting base 1. When it is necessary to adjust the rotation angle of the straightening rollers, i.e. the upper roller 71 and the lower roller 81 in the scheme, the distance between the fixed plate 61 and the movable plate 63 is changed by rotating the adjusting rod 62. At this time, the upper rotating shaft 7 can be rotated by the meshing action of the transmission rack 64 and the gear 65, which in turn drives the upper roller 71 and the lower roller 81 to swing at a certain angle, thereby meeting the straightening needs of the seamless tube.

[0027] Working Principle: This type of straightening device for cold working of stainless steel seamless pipes adjusts the distance between the upper roller 71 and the lower roller 81 according to the diameter of the seamless pipe to be straightened. When straightening a thicker diameter steel pipe, rotating the adjusting rod 4 clockwise, and guided by the guide rod 5, reduces the distance between the left L-shaped plate 3 and the right L-shaped plate 2 and the mounting base 1, thereby increasing the vertical distance between the left L-shaped plate 3 and the right L-shaped plate 2, which is more suitable for thicker diameter steel pipes. Conversely, when straightening a thinner diameter steel pipe, rotating the adjusting rod 4 in the opposite direction... The increased distance between the left L-shaped plate 3 and the right L-shaped plate 2 and the mounting base 1 reduces the vertical distance between them, making it more suitable for use with thinner diameter steel pipes. When it is necessary to adjust the rotation angle of the straightening rollers, i.e., the upper roller 71 and the lower roller 81 in the scheme, the distance between the fixed plate 61 and the movable plate 63 is changed by rotating the adjusting rod 62. At this time, the upper rotating shaft 7 can be rotated by the meshing action of the transmission rack 64 and the gear 65, which in turn drives the upper roller 71 and the lower roller 81 to swing at a certain angle, thereby meeting the straightening requirements of seamless pipes.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A straightening device for cold working of stainless steel seamless tubes, comprising a mounting base (1), characterized in that: The mounting base (1) has a left L-shaped plate (3) and a right L-shaped plate (2) on its left and right sides respectively. The horizontal end faces of the left L-shaped plate (3) and the right L-shaped plate (2) are rotatably connected to an upper rotating shaft (7) and a lower rotating shaft (8) respectively. The upper rotating shaft (7) and the lower rotating shaft (8) are respectively provided with an upper roller (71) and a lower roller (81) at their opposite ends. The upper end of the left L-shaped plate (3) and the lower end of the right L-shaped plate (2) are rotatably connected to an adjusting rod (4). The adjusting rod (4) is provided with guide rods (5) on both sides. The upper end face of the left L-shaped plate (3) and the lower end face of the right L-shaped plate (2) are provided with an adjusting mechanism (6). The adjustment mechanism (6) includes a fixed plate (61) and a movable plate (63). An adjustment rod (62) is threadedly connected to the fixed plate (61). The adjustment rod (62) and the movable plate (63) are rotatably connected. A transmission rack (64) is fixedly installed on the rear end face of the movable plate (63). Gears (65) are fixedly installed on the outer ends of the upper rotating shaft (7) and the lower rotating shaft (8). The gears (65) and the transmission rack (64) mesh.

2. The straightening device for cold working of stainless steel seamless tubes according to claim 1, characterized in that: The center lines of the guide rod (5) and the adjusting rod (4) are parallel to each other, and the center lines of the guide rod (5) and the adjusting rod (4) are both in the same longitudinal plane.

3. The straightening device for cold working of stainless steel seamless tubes according to claim 1, characterized in that: The center line of the second adjusting rod (62) is perpendicular to the upper rotating shaft (7) and the lower rotating shaft (8), and the second adjusting rod (62) does not intersect with the upper rotating shaft (7) and the lower rotating shaft (8).

4. A straightening device for cold working of stainless steel seamless tubes according to claim 1, characterized in that: The longitudinal sections of the left L-shaped plate (3) and the right L-shaped plate (2) are both "L" shaped, and the left L-shaped plate (3) and the right L-shaped plate (2) are both located inside the mounting base (1).

5. A straightening device for cold working of stainless steel seamless tubes according to claim 1, characterized in that: The gear (65) is located on the outside of the left L-shaped plate (3) and the right L-shaped plate (2), and the gear (65) is located in the middle of the mounting base (1).

6. A straightening device for cold working of stainless steel seamless tubes according to claim 1, characterized in that: The upper roller (71) and the lower roller (81) are both located between the left L-shaped plate (3) and the right L-shaped plate (2), and the center lines of the upper roller (71) and the lower roller (81) are at an angle.

7. A straightening device for cold working of stainless steel seamless tubes according to claim 1, characterized in that: The lower end face of the lower rotating shaft (8) is higher than the lower end face of the mounting base (1), and the lower rotating shaft (8) and the upper rotating shaft (7) are collinear.

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