Straightening treatment equipment for stainless steel pipe

Abstract

The utility model relates to the technical field of steel pipe straightening, and discloses a stainless steel pipe straightening treatment device which comprises a base, a supporting plate is fixedly connected to the middle of the lower surface of the base, a U-shaped frame is fixedly connected to the upper surface of the supporting plate, a hydraulic cylinder is fixedly connected to the upper surface of the U-shaped frame, and the hydraulic cylinder is fixedly connected to the lower surface of the U-shaped frame. The bottom end of the hydraulic cylinder penetrates through the inner wall of the top of the U-shaped frame to be fixedly connected with a pressing plate, two sets of symmetrical sliding openings are formed in the upper surface of the base, each set comprises two sliding openings, and clamping plates are slidably connected into the sliding openings. According to the pipe straightening device, through the multiple clamping plates, the two sides of a pipe can be clamped before the pipe is straightened, then the pipe is limited, the situation that the straightening result is not ideal and straightening needs to be conducted again due to the fact that the pipe deflects in the straightening process is avoided, time is saved, and the straightening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe straightening technology, and more specifically to a straightening treatment device for stainless steel pipes. Background Technology

[0002] Stainless steel pipes are a key material widely used in the industrial field, and their straightness is one of the important indicators for measuring product quality. During the manufacturing process, stainless steel pipes often experience residual stress or mechanical deformation due to processes such as rolling, welding, and cooling, leading to problems such as bending and ovality deviations in the pipes.

[0003] A search revealed a Chinese patent with publication number CN221909180U, which discloses a steel pipe straightening machine. This device can adjust the angle between two clamping plates to a suitable angle for placing the steel pipe, so that the clamping plates can automatically adjust the clamping angle according to steel pipes with different outer diameters. However, since stainless steel pipes are curved, they are prone to tilting during the straightening process, which affects the straightening effect of the device on the stainless steel pipes. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a straightening device for stainless steel pipes to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a straightening device for stainless steel pipes, including a base, a support plate fixedly connected to the middle of the lower surface of the base, a U-shaped frame fixedly connected to the upper surface of the support plate, a hydraulic cylinder fixedly connected to the upper surface of the U-shaped frame, a pressure plate fixedly connected to the bottom end of the hydraulic cylinder through the top inner wall of the U-shaped frame, two symmetrical sets of sliding openings opened on the upper surface of the base, each set having two openings, a clamping plate slidably connected in each of the multiple sliding openings, multiple sliding rods fixedly connected between the inner walls on both sides of the multiple sliding openings, and multiple sliding rods passing through and slidably connected to the corresponding clamping plates, connecting rods fixedly connected to the bottom of the clamping plates on the same side of the two sets, two symmetrical fixing plates fixedly connected to the lower surface of the support plate, a semi-double-acting screw rotatably connected between the two fixing plates through a bearing, and the semi-double-acting screw rotatably passing through the two connecting rods and threadedly connected to them.

[0006] As a further embodiment of this utility model, one of the fixed plates is fixedly connected to a drive motor that causes the semi-bidirectional lead screw to rotate forward and backward along the axial direction.

[0007] As a further embodiment of this utility model, two symmetrical fixed seats are fixedly connected to the middle position of the upper surface of the base, and L-shaped plates are fixedly connected to both sides of the pressure plate. A threaded rod is threadedly connected to the upper surface of the L-shaped plate, and the bottom end of the threaded rod is rotatably connected to a limit plate through a bearing.

[0008] As a further embodiment of this utility model, two symmetrical round rods are fixedly connected to the upper surface of the limiting plate and located on both sides of the threaded rod, and the top end of the round rod is inserted into one end of the L-shaped plate and slidably connected thereto.

[0009] As a further embodiment of this utility model, the lower surface of the pressure plate is fixedly connected with two symmetrical sets of fixing frames, and each set has multiple fixing frames. Rollers are rotatably connected between the inner walls of both sides of one end of the multiple fixing frames, and rubber rings are glued to the outer circumference of the multiple rollers.

[0010] As a further embodiment of this utility model, two symmetrical guide rods are fixedly connected to the upper surface of the pressure plate and to both sides of the hydraulic cylinder, and the top ends of the two guide rods pass through the top outer wall of the U-shaped frame and interact with it. A limit block is fixedly connected to the top end of the guide rod.

[0011] As a further embodiment of this utility model, V-shaped support plates are fixedly connected to both ends of the upper surface of the base, a support block is fixedly connected to the middle of the upper surface of the base, and a support frame is fixedly connected to the lower surface of the base.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model, through the provision of multiple clamping plates, can clamp both sides of the pipe fitting before straightening, thereby limiting the pipe fitting. If the pipe fitting becomes skewed during the straightening process, resulting in an unsatisfactory straightening result and requiring re-straightening, this invention saves time and increases straightening efficiency.

[0014] 2. This utility model has a drive motor that can drive the semi-bidirectional lead screw to rotate, eliminating the need for manual rotation of the semi-bidirectional lead screw, saving manpower, increasing the automation effect of the device, and further improving the straightening efficiency of pipe fittings.

[0015] 3. This utility model, through the rollers and the rubber rings bonded to their surfaces, can protect the surface of the pipe fittings during straightening, preventing the pressure plate from directly contacting the pipe fittings and causing damage.

[0016] 4. In this utility model, the fixed seat and the limiting plate are provided so that during the straightening process, the limiting plate contacts the fixed seat first when the pressure plate is pressed down, which prevents the pipe from being damaged due to excessive pressure. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 For the present utility model Figure 1 A partially enlarged structural diagram.

[0019] Figure 3 This is a bottom view of the support plate structure of this utility model.

[0020] Figure 4 This is a cross-sectional view of the U-shaped frame structure of this utility model.

[0021] Figure 5 This is an enlarged schematic diagram of the pressure plate structure of this utility model.

[0022] The attached diagram is labeled as follows: 1. Support frame; 2. Base; 3. Support plate; 4. U-shaped frame; 5. Hydraulic cylinder; 6. Pressure plate; 7. V-shaped support plate; 8. Sliding mouth; 9. Sliding rod; 10. Clamping plate; 11. Fixed seat; 12. Fixed plate; 13. Support block; 14. Connecting rod; 15. Semi-double-acting screw; 16. Drive motor; 17. L-shaped plate; 18. Guide rod; 19. Fixed frame; 20. Roller; 21. Threaded rod; 22. Limiting plate; 23. Round rod. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-5This utility model provides a straightening device for stainless steel pipes, including a base 2. A support plate 3 is bolted to the middle of the lower surface of the base 2. A U-shaped frame 4 is bolted to the upper surface of the support plate 3. A hydraulic cylinder 5 is bolted to the upper surface of the U-shaped frame 4. The bottom end of the hydraulic cylinder 5 passes through the top inner wall of the U-shaped frame 4 and is bolted to a pressure plate 6. The upper surface of the base 2 has two symmetrical sets of sliding openings 8, with two in each set. Clamping plates 10 are slidably connected in each of the sliding openings 8. Multiple sliding rods 9 are bolted between the inner walls on both sides of the multiple sliding openings 8, and each sliding rod 9 passes through the corresponding clamping plate 10 and is connected to it. The sliding connection consists of two sets of clamping plates 10 on the same side, each with a connecting rod 14 bolted to its bottom. Two symmetrical fixing plates 12 are bolted to the lower surface of the support plate 3. A semi-bidirectional lead screw 15 is rotatably connected between the two fixing plates 12 via a bearing. The semi-bidirectional lead screw 15 passes through the two connecting rods 14 and is threaded to them. A drive motor 16, which causes the semi-bidirectional lead screw 15 to rotate in both directions along the axial direction, is bolted to one side of one of the fixing plates 12. Two symmetrical sets of fixing brackets 19 are bolted to the lower surface of the pressure plate 6, with multiple brackets in each set. Rollers 20 are rotatably connected between the inner walls of both sides of one end of each fixing bracket 19. Furthermore, rubber rings are bonded to the outer circumference of multiple rollers 20. When straightening a bent stainless steel pipe, the pipe to be straightened is first placed on the base 2, with the bent protrusion at the top. Then, the drive motor 16 is started to rotate the semi-double-acting screw 15. During the rotation of the semi-double-acting screw 15, it drives the two connecting rods 14 threaded to it to move closer to each other, thereby causing the two sets of clamping plates 10 to clamp the pipe. After the pipe is clamped, the hydraulic cylinder 5 is activated to extend, thereby moving the pressure plate 6. When the rollers 20 contact the pipe, the hydraulic cylinder 5 continues to extend, thus straightening the bent part of the pipe. 0. The pipe fitting can be clamped on both sides before straightening, thus limiting its position. If the pipe fitting becomes skewed during the straightening process, resulting in an unsatisfactory straightening result and requiring re-straightening, this device saves time and increases straightening efficiency. The drive motor 16 can drive the semi-bidirectional lead screw 15 to rotate, eliminating the need for manual rotation of the semi-bidirectional lead screw 15, saving manpower and increasing the automation effect of the device, further improving the straightening efficiency of the pipe fitting. The rollers 20 and the rubber rings bonded to their surfaces can protect the surface of the pipe fitting during straightening, preventing the pressure plate 6 from directly contacting the pipe fitting and causing damage.

[0025] To limit the downward movement of the pressure plate 6, two symmetrical fixing seats 11 are bolted to the middle of the upper surface of the base 2. L-shaped plates 17 are bolted to both sides of the pressure plate 6. A threaded rod 21 is threaded through the upper surface of the L-shaped plate 17. The bottom end of the threaded rod 21 is rotatably connected to a limiting plate 22 via a bearing. Two symmetrical round rods 23 are bolted to the upper surface of the limiting plate 22, located on both sides of the threaded rod 21, with the top end of the round rod 23 inserted into one end of the L-shaped plate 17. It is slidably connected to it. When it is necessary to limit the distance of the pressure plate 6, the threaded rod 21 is rotated before calibration. Since the threaded rod 21 is threadedly connected to the L-shaped plate 17, it will move downward during its rotation, thereby causing the limiting plate 22 to move downward until the distance between the bottom end of the limiting plate 22 and the bottom end of the roller 20 is the same as the diameter of the pipe. During the calibration process, the limiting plate 22 contacts the fixed seat 11 first when the pressure plate 6 is pressed down, to prevent excessive pressure from damaging the pipe.

[0026] To facilitate the guidance of the pressure plate 6 during its up-and-down movement, two symmetrical guide rods 18 are bolted to the upper surface of the pressure plate 6 and located on both sides of the hydraulic cylinder 5. The top ends of the two guide rods 18 pass through the top outer wall of the U-shaped frame 4 and interact with it. The top ends of the guide rods 18 are bolted to limit blocks, which can guide the pressure plate 6 during its up-and-down movement and prevent it from tilting during the movement, thus affecting the accuracy of the calibration.

[0027] To facilitate the lifting of the stainless steel pipe, V-shaped support plates 7 are bolted to both ends of the upper surface of the base 2, support block 13 is bolted to the middle of the upper surface of the base 2, and support frame 1 is bolted to the lower surface of the base 2.

[0028] The use of this utility model involves the following steps:

[0029] S1: When it is necessary to limit the distance of the pressure plate 6, rotate the threaded rod 21 before calibration. Since the threaded rod 21 is threadedly connected to the L-shaped plate 17, it will move downward during its rotation, thereby causing the limiting plate 22 to move downward until the distance between the bottom end of the limiting plate 22 and the bottom end of the roller 20 is the same as the diameter of the pipe.

[0030] S2: When it is necessary to straighten the bent stainless steel pipe, first place the pipe to be straightened on the base 2, with the bent protrusion at the top. Then start the drive motor 16 to make the semi-bidirectional screw 15 rotate. During the rotation of the semi-bidirectional screw 15, it will drive the two connecting rods 14 threaded to it to move closer to each other, thereby making the two sets of clamping plates 10 clamp the pipe.

[0031] S3: After clamping the pipe fitting, the hydraulic cylinder 5 is activated to extend, thereby moving the pressure plate 6. When the roller 20 contacts the pipe fitting, the hydraulic cylinder 5 continues to extend, thereby straightening the bent part of the pipe fitting.

[0032] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0033] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A straightening device for stainless steel pipes, comprising a base (2), characterized in that: A support plate (3) is fixedly connected to the middle of the lower surface of the base (2). A U-shaped frame (4) is fixedly connected to the upper surface of the support plate (3). A hydraulic cylinder (5) is fixedly connected to the upper surface of the U-shaped frame (4). A pressure plate (6) is fixedly connected to the bottom end of the hydraulic cylinder (5) through the top inner wall of the U-shaped frame (4). Two sets of symmetrical sliding openings (8) are opened on the upper surface of the base (2), and there are two in each set. Clamping plates (10) are slidably connected in each of the sliding openings (8). Multiple sliding rods (9) are fixedly connected between the inner walls on both sides of (8), and multiple sliding rods (9) pass through the corresponding clamps (10) and are slidably connected to them. The bottom of the clamps (10) on both sides is fixedly connected to connecting rods (14). Two symmetrical fixing plates (12) are fixedly connected to the lower surface of the support plate (3). A semi-bidirectional screw rod (15) is rotatably connected between the two fixing plates (12) through a bearing, and the semi-bidirectional screw rod (15) passes through the two connecting rods (14) and is threadedly connected to them.

2. The straightening equipment for stainless steel pipes according to claim 1, characterized in that: One of the fixed plates (12) is fixedly connected to a drive motor (16) that causes the semi-bidirectional lead screw (15) to rotate in both directions along the axial direction.

3. The straightening equipment for stainless steel pipes according to claim 1, characterized in that: Two symmetrical fixed seats (11) are fixedly connected to the middle position of the upper surface of the base (2). L-shaped plates (17) are fixedly connected to both sides of the pressure plate (6). A threaded rod (21) is threadedly connected to the upper surface of the L-shaped plate (17). The bottom end of the threaded rod (21) is rotatably connected to a limit plate (22) through a bearing.

4. The straightening equipment for stainless steel pipes according to claim 3, characterized in that: Two symmetrical round rods (23) are fixedly connected to the upper surface of the limiting plate (22) and on both sides of the threaded rod (21), and the top end of the round rod (23) is inserted into one end of the L-shaped plate (17) and slidably connected to it.

5. The straightening equipment for stainless steel pipes according to claim 1, characterized in that: The lower surface of the pressure plate (6) is fixedly connected with two symmetrical sets of fixing brackets (19), and each set has multiple brackets. Rollers (20) are rotatably connected between the inner walls of both sides of one end of the multiple fixing brackets (19), and rubber rings are glued to the outer circumference of the multiple rollers (20).

6. The straightening equipment for stainless steel pipes according to claim 5, characterized in that: Two symmetrical guide rods (18) are fixedly connected to the upper surface of the pressure plate (6) and to both sides of the hydraulic cylinder (5). The top ends of the two guide rods (18) pass through the top outer wall of the U-shaped frame (4) and are interactively connected to it. The top ends of the guide rods (18) are fixedly connected to limit blocks.

7. The straightening equipment for stainless steel pipes according to claim 3, characterized in that: V-shaped support plates (7) are fixedly connected to both ends of the upper surface of the base (2), a support block (13) is fixedly connected to the middle of the upper surface of the base (2), and a support frame (1) is fixedly connected to the lower surface of the base (2).

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