Automatic compensation device for steel pipe welding extrusion forming roller

Abstract

The utility model discloses an automatic compensation device for a steel pipe welding extrusion forming roller, and particularly relates to the technical field of steel pipe welding. The automatic compensation device comprises a base, a first limiting sliding groove is formed in the top of the base, and a threaded rod is arranged in the middle of the first limiting sliding groove; one end of the threaded rod extends into the transmission box and is fixedly connected with a first bevel gear, and the top of the transmission box is fixedly connected with a stepping motor and a controller. Firstly, the extrusion strength of the two extrusion rollers to a middle steel pipe can be detected through the pressure sensor, and when the extrusion strength deviates, the controller can control the stepping motor to start, so that the second bevel gear is controlled to drive the first bevel gear to rotate, and the supporting frame is driven to drive the supporting block to move; therefore, the extrusion strength of the two extrusion rollers on the steel pipe is adjusted, the extrusion strength can be automatically adjusted conveniently when a necking gap of the steel pipe is increased, the automatic compensation effect is achieved, and the quality of a welded finished product is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe welding technology, and more specifically, to an automatic compensation device for steel pipe welding extrusion forming rollers. Background Technology

[0002] In the production process of steel pipes, the steel strip is fed to the center of multiple sets of extrusion forming rollers, which form the steel strip into an arc-shaped sheet structure. The two sides of the arc-shaped sheet are contracted by multiple constriction rollers, so that the two sides come together and are tightly joined. Then, the roller shaft of the rolling mechanism further contracts and presses the strip to form the basic shape of the steel pipe. Finally, the gaps are welded to form the steel pipe. Welding and extrusion forming is one of the key processes. The forming roller, as an important component in this process, directly affects the forming quality and production efficiency of the steel pipe.

[0003] As the steel pipe welding extrusion molding process continues, the forming roller will gradually wear down due to high temperature, high pressure and friction with the steel pipe material. Once the forming roller wears down, the contact state between it and the steel pipe will change, resulting in unstable extrusion molding effect of the steel pipe. This may lead to problems such as deviation in steel pipe diameter and reduced weld quality, which seriously affect the quality and pass rate of the steel pipe.

[0004] The existing extrusion forming rollers adjust the extrusion intensity of steel pipes by manually rotating the screw. The extrusion intensity is mostly fixed. When the forming roller wears and the extrusion intensity changes, it will lead to an increase in the narrowing gap, which will affect the quality of the welded product. It is inconvenient to automatically compensate for the extrusion intensity. Therefore, an automatic compensation device for steel pipe welding extrusion forming rollers is proposed. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic compensation device for steel pipe welding extrusion forming rollers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic compensation device for steel pipe welding extrusion forming rollers, including a base, a first limiting groove on the top of the base, a threaded rod in the middle of the first limiting groove, a transmission box fixedly connected to one end of the base, one end of the threaded rod extending into the interior of the transmission box and fixedly connected to a first bevel gear, a stepper motor and a controller fixedly connected to the top of the transmission box, starting the stepper motor to control the second bevel gear to drive the first bevel gear to rotate, which can control the rotation of the threaded rod to play a driving role, and the controller can conveniently control the stepper motor to control the rotation of the second bevel gear to a fixed angle, so as to facilitate the adjustment function;

[0007] The output end of the stepper motor extends into the interior of the transmission box and is fixedly connected to a second bevel gear. Two support frames are symmetrically arranged on both sides of the inner cavity of the first limiting slide groove. A support block is arranged in the middle of the support frame. Pressure sensors are symmetrically arranged at both ends of the support block. A fixing rod is fixedly connected to the top of the support block. A squeezing roller is sleeved in the middle of the fixing rod. By rotating the threaded rod, the two support frames can be controlled to move the two support blocks to the opposite side, which facilitates the adjustment of the squeezing distance. The pressure sensor can detect the resistance of the support frame to move the support block, thereby detecting the squeezing intensity. When the squeezing intensity decreases, the stepper motor can be activated to control the drive, thereby achieving the function of automatic compensation and adjustment.

[0008] A stabilizing plate is provided at the top of the fixed rod, and a second limiting groove is provided at one end of the stabilizing plate. Mounting ear plates are symmetrically fixed around the base. The stability of the two fixed rods is improved by the cooperation of the stabilizing plate and the second limiting groove, thereby improving the stability of the two extrusion rollers and improving the extrusion effect.

[0009] Preferably, the threads at both ends of the threaded rod are symmetrical, the first bevel gear meshes with the second bevel gear, and starting the stepper motor controls the rotation of the second bevel gear, which in turn controls the first bevel gear to drive the threaded rod to rotate, making it convenient to drive.

[0010] Preferably, the controller is electrically connected to the pressure sensor and the stepper motor. One side of the controller is electrically connected to the main controller via a wire. The controller can receive the pressure value detected by the pressure sensor. When the pressure value is less than or greater than a preset value, it can control the stepper motor to drive the second bevel gear to rotate forward and backward by the required angle. This allows for sequential adjustment of the extrusion intensity, achieving automatic compensation. The main controller facilitates the control of the extrusion intensity and preset values ​​of multiple extrusion rollers, enabling convenient overall control.

[0011] Preferably, the cross-sectional shape of the support frame is set to "U" shape, the support block is set in the middle of the support frame, one end of the pressure sensor is in contact with the wall of the support frame, the support frame limits the support block, and the movement of the support frame can drive the support block to move, thereby squeezing the pressure sensor and detecting the squeezing strength of the squeezing roller on the steel pipe, which is convenient to use.

[0012] Preferably, the widths of the support frame and the support block are adapted to the inner cavity width of the first limiting groove, thereby improving the stability of the movement of the support frame and the support block.

[0013] Preferably, the threaded rod passes through the middle of the support frame and the support block, the threaded rod is threaded to the wall of the support frame, and the threaded rod is slidably connected to the wall of the support block. The rotation of the threaded rod can control the two support frames to move the two support blocks to the opposite side, which is convenient for driving.

[0014] Preferably, one end of one of the fixing rods passes through one end of the stabilizing plate and is fitted with a nut, while one end of the other fixing rod passes through the middle of the second limiting groove. The stability of the two extrusion rollers is improved through the cooperation of the stabilizing plate and the second limiting groove.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This invention firstly uses a pressure sensor to detect the compressive strength of the two extrusion rollers on the central steel pipe. When the compressive strength deviates, the controller can start the stepper motor, thereby controlling the second bevel gear to drive the first bevel gear to rotate, driving the support frame to move the support block, thereby adjusting the compressive strength of the two extrusion rollers on the steel pipe. This allows for automatic adjustment of the compressive strength when the narrowing gap of the steel pipe increases, thus achieving automatic compensation and improving the quality of the welded product.

[0017] This utility model also limits the support block by setting a support frame, so that when the support frame moves in the middle of the first limiting groove, it can drive the support block to move, thereby driving the two extrusion rollers to move, which is convenient for driving and adjustment. The stability plate improves the stability of the top of the two fixed rods, preventing the two extrusion rollers from tilting and misaligning, which would affect the performance. The controller can receive the detection value of the pressure sensor and control the stepper motor to start and adjust, thus improving the performance.

[0018] In summary, through the interaction of the above-mentioned multiple functions, when the extrusion strength deviates and causes the narrowing gap of the steel pipe to increase, the extrusion strength can be automatically adjusted, thereby achieving an automatic compensation effect and improving the quality of the welded product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the disassembled structure of this utility model.

[0022] Figure 4 This is a schematic diagram showing the disassembled structure of the support frame and support block of this utility model.

[0023] The attached diagram is labeled as follows: 1. Base; 2. First limiting groove; 3. Threaded rod; 4. Transmission box; 5. First bevel gear; 6. Stepper motor; 7. Controller; 8. Second bevel gear; 9. Support frame; 10. Support block; 11. Pressure sensor; 12. Fixing rod; 13. Extrusion roller; 14. Stabilizing plate; 15. Second limiting groove; 16. Mounting ear plate. Detailed Implementation

[0024] 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.

[0025] As attached Figure 1-4 The automatic compensation device for steel pipe welding extrusion forming roller shown includes a base 1. A first limiting groove 2 is provided on the top of the base 1. A threaded rod 3 is provided in the middle of the first limiting groove 2. A transmission box 4 is fixedly connected to one end of the base 1. One end of the threaded rod 3 extends into the interior of the transmission box 4 and is fixedly connected to a first bevel gear 5. A stepper motor 6 and a controller 7 are fixedly connected to the top of the transmission box 4. Starting the stepper motor 6 controls the second bevel gear 8 to drive the first bevel gear 5 to rotate, which can control the rotation of the threaded rod 3, thus playing a driving role. The controller 7 can conveniently control the stepper motor 6 to control the rotation of the second bevel gear 8 to a fixed angle, thus facilitating the adjustment function.

[0026] The output end of the stepper motor 6 extends into the interior of the transmission box 4 and is fixedly connected to the second bevel gear 8. Two support frames 9 are symmetrically arranged on both sides of the inner cavity of the first limiting slide groove 2. A support block 10 is arranged in the middle of the support frame 9. Pressure sensors 11 are symmetrically arranged at both ends of the support block 10. A fixing rod 12 is fixedly connected to the top of the support block 10. A squeezing roller 13 is sleeved in the middle of the fixing rod 12. A stabilizing plate 14 is arranged at the top of the fixing rod 12. A second limiting slide groove 15 is opened at one end of the stabilizing plate 14. Mounting ear plates 16 are symmetrically fixedly connected around the base 1. By rotating the threaded rod 3, the two support frames 9 can be controlled to move the two support blocks 10 to opposite sides, which facilitates the adjustment of the extrusion distance. The pressure sensor 11 can detect the resistance of the support frame 9 to move the support block 10, thereby detecting the extrusion intensity. When the extrusion intensity decreases, the stepper motor 6 can be activated to control the drive, thereby achieving automatic compensation and adjustment. Through the cooperation of the stabilizing plate 14 and the second limit slide 15, the stability of the two fixed rods 12 is improved, thereby improving the stability of the two extrusion rollers 13 and improving the extrusion effect.

[0027] As attached Figure 1-4As shown, the threads at both ends of the threaded rod 3 are symmetrical. The first bevel gear 5 meshes with the second bevel gear 8. The controller 7 is electrically connected to the pressure sensor 11 and the stepper motor 6. One side of the controller 7 is electrically connected to the main controller via a wire. The cross-sectional shape of the support frame 9 is set as "U". The support block 10 is set in the middle of the support frame 9. One end of the pressure sensor 11 is in contact with the wall of the support frame 9. The widths of the support frame 9 and the support block 10 are adapted to the inner cavity width of the first limiting slide groove 2, improving the stability of the movement of the support frame 9 and the support block 10. The threaded rod 3 passes through the middle of the support frame 9 and the support block 10. The threaded rod 3 is threadedly connected to the wall of the support frame 9 and slidably connected to the wall of the support block 10. One end of one fixed rod 12 passes through one end of the stabilizing plate 14 and is fitted with a nut. One end of the other fixed rod 12 passes through the middle of the second limiting slide groove 15. The stability of the two extrusion rollers 13 is improved by the cooperation of the stabilizing plate 14 and the second limiting slide groove 15. The stepper motor 6 is started to control the rotation of the second bevel gear 8, which in turn controls the rotation of the first bevel gear 5 to drive the threaded rod 3. The two support frames 9 can be controlled to move the two support blocks 10 to opposite sides for easy driving. The controller 7 can receive the pressure value detected by the pressure sensor 11. When the pressure value is less than or greater than the preset value, the stepper motor 6 can be controlled to drive the second bevel gear 8 to rotate forward and backward by the required angle, which can adjust the extrusion intensity in sequence and achieve automatic compensation. The extrusion intensity of multiple extrusion rollers can be easily controlled by the central controller, and the preset value can be set for easy overall control. The support frame 9 limits the support block 10, and the movement of the support frame 9 can drive the support block 10 to move, thereby pressing the pressure sensor 11 and detecting the extrusion intensity of the extrusion rollers 13 on the steel pipe, which is convenient to use.

[0028] The working principle of this utility model is as follows: When in use, the base 1 is fixed in the preset position by rivets through the mounting ear plate 16, and the steel strip passing between the two extrusion rollers 13 is extruded and formed by the extrusion of the two extrusion rollers 13.

[0029] During the extrusion molding and conveying process, the pressure sensor 11 will detect the extrusion intensity of the extrusion roller 13 on the steel pipe in real time. When the pressure sensor 11 detects that the extrusion intensity increases or decreases, the controller 7 can control the stepper motor 6 to drive the second bevel gear 8 to rotate, thereby driving the threaded rod 3 to rotate. This allows the extrusion intensity of the two extrusion rollers 13 on the middle steel pipe to be adjusted, facilitating automatic adjustment and compensation.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic compensation device for steel pipe welding extrusion forming rollers, comprising a base (1), characterized in that: The base (1) has a first limiting groove (2) on its top, and a threaded rod (3) is provided in the middle of the first limiting groove (2). A transmission box (4) is fixedly connected to one end of the base (1). One end of the threaded rod (3) extends into the inside of the transmission box (4) and is fixedly connected to a first bevel gear (5). A stepper motor (6) and a controller (7) are fixedly connected to the top of the transmission box (4). The output end of the stepper motor (6) extends into the interior of the transmission box (4) and is fixedly connected to the second bevel gear (8). Two support frames (9) are symmetrically arranged on both sides of the inner cavity of the first limiting slide groove (2). A support block (10) is arranged in the middle of the support frame (9). Pressure sensors (11) are symmetrically arranged at both ends of the support block (10). A fixing rod (12) is fixedly connected to the top of the support block (10). A squeezing roller (13) is sleeved in the middle of the fixing rod (12). The top of the fixed rod (12) is provided with a stabilizing plate (14), and one end of the stabilizing plate (14) is provided with a second limiting groove (15). The base (1) is symmetrically fixedly connected with mounting ear plates (16).

2. The automatic compensation device for steel pipe welding extrusion forming rollers according to claim 1, characterized in that: The threads at both ends of the threaded rod (3) are symmetrical, and the first bevel gear (5) meshes with the second bevel gear (8).

3. The automatic compensation device for steel pipe welding extrusion forming rollers according to claim 1, characterized in that: The controller (7) is electrically connected to the pressure sensor (11), the controller (7) is electrically connected to the stepper motor (6), and one side of the controller (7) is electrically connected to the main controller via a wire.

4. The automatic compensation device for steel pipe welding extrusion forming rollers according to claim 1, characterized in that: The cross-sectional shape of the support frame (9) is set as "U" shape, the support block (10) is set in the middle of the support frame (9), and one end of the pressure sensor (11) is attached to the wall of the support frame (9).

5. The automatic compensation device for steel pipe welding extrusion forming rollers according to claim 1, characterized in that: The widths of the support frame (9) and the support block (10) are both adapted to the inner cavity width of the first limiting groove (2).

6. The automatic compensation device for steel pipe welding extrusion forming rollers according to claim 1, characterized in that: The threaded rod (3) passes through the middle of the support frame (9) and the support block (10). The threaded rod (3) is threadedly connected to the wall of the support frame (9) and slidably connected to the wall of the support block (10).

7. The automatic compensation device for steel pipe welding extrusion forming rollers according to claim 1, characterized in that: One end of one of the fixing rods (12) passes through one end of the stabilizing plate (14) and is fitted with a nut, while one end of the other fixing rod (12) passes through the middle of the second limiting groove (15).

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