Pipe hot rolling device

Abstract

The utility model belongs to the technical field of pipe hot rolling processes, and particularly relates to a pipe hot rolling device which comprises two supporting plates, vertical plates are installed in the middles of the two supporting plates, sliding grooves are formed in the two vertical plates, lifting blocks are arranged in the two sliding grooves, first pneumatic cylinders are installed at the top ends of the two vertical plates, and second pneumatic cylinders are installed at the top ends of the two vertical plates. First pneumatic rods are assembled at the acting ends of the first pneumatic cylinders correspondingly, the bottom ends of the first pneumatic rods are fixedly connected to lifting blocks, threaded rods are rotationally installed on the two lifting blocks in a matched mode, and a first motor is installed on one lifting block. During hot rolling processing, the iron oxide removing mechanism is arranged, so that iron oxide on the surface of a pipe can be comprehensively and uniformly ground and removed, the iron oxide generated in the hot rolling process of the seamless titanium pipe can be effectively removed, and the finished product quality of the seamless titanium pipe is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of hot rolling technology for pipes, specifically a hot rolling apparatus for pipes. Background Technology

[0002] Hot rolling is an important metal processing technology that involves heating metal materials to above their recrystallization temperature and then compressing and deforming them using rolling equipment. During the rolling process, the metal is dragged into the gap between the rolls by the friction of the rolls and undergoes plastic deformation under the pressure applied by the rolls. Seamless titanium tubes are tubes manufactured using the hot rolling process.

[0003] A Chinese patent with authorization announcement number CN202263770U discloses a hot rolling device for seamless steel pipes, including a main base. Multiple rolling mill devices are installed on the main base in a sequence with progressively smaller rolling holes. The center of the mandrel and the centers of the rolling holes of the multiple rolling mill devices are located on the same center line. The rolling mill devices are divided into two groups: one group, located at the front end of the main base, is used for continuous rolling of the inner and outer diameters of the tube; the other group, located at the rear end of the main base, is used for reducing the diameter of the tube. This invention enables continuous rolling and diameter reduction operations, producing finished pipes in a single operation. It is suitable for rolling small-diameter seamless steel pipes for mechanical structural components and features simple process, low energy consumption, and high processing efficiency.

[0004] During the hot rolling process of seamless titanium tubes, iron oxide is generated on their surface. Existing hot rolling equipment cannot automatically remove the iron oxide from the surface of seamless titanium tubes. If the generated iron oxide is not removed, it is easy to be pressed into the material after leveling, which will seriously affect the quality of the finished seamless titanium tube. Therefore, a hot rolling device for tubes is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background technology, this utility model proposes a hot rolling device for pipes.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A hot rolling device for pipes, comprising two support plates, with a vertical plate installed in the middle of each support plate. Each vertical plate has a sliding groove, and a lifting block is installed in each of the two sliding grooves. A first pneumatic cylinder is installed at the top of each vertical plate, and a first pneumatic rod is fitted to the actuating end of each first pneumatic cylinder. The bottom end of the first pneumatic rod is fixed to the lifting block. Threaded rods are rotatably mounted on both lifting blocks. A first motor is installed on one of the lifting blocks. The first motor's output... The outlet is connected to one end of the threaded rod. Movable blocks are fitted at both ends of the threaded rod. A limit rod is fixed between the two lifting blocks, and the limit rod passes through the movable blocks. A fixed plate is installed at the bottom of each of the two movable blocks. A contact head is installed on each of the two fixed plates via a rotating shaft. A second motor is installed on the side wall of one of the fixed plates. The output end of the second motor is connected to one end of one of the rotating shafts. Two second pneumatic cylinders are installed on the top side of each support plate. The two second pneumatic cylinders on the same side are located on opposite sides of the vertical plate. The function of each second pneumatic cylinder is... Each end is equipped with a second pneumatic rod, and the bottom ends of the four second pneumatic rods are fitted with I-shaped plates. During hot rolling, in order to remove the iron oxide generated on the surface of the seamless titanium tube during hot rolling, the heated metal billet is first transported to the iron oxide removal mechanism area. Then, the first pneumatic cylinder is activated, causing the first pneumatic rod to drive the lifting block to move down along the slide groove, thereby causing the contact head to move down as well, until the contact head moves to both ends of the seamless titanium tube. Then, the first motor is activated, causing the threaded rod to rotate. With the cooperation of the limit rod, the two moving blocks drive the two contact heads to stably move closer to each other. As the contact heads gradually move, they insert into both ends of the tube, thus fixing the tube in place. Then, the second pneumatic cylinder operates, causing the second pneumatic rod to move the I-shaped plate and the grinding plate upwards until the grinding plate contacts the bottom of the tube. Next, the second electric motor operates, causing the contact heads to rotate the fixed tube. Through the rotation of the seamless titanium tube, the iron oxide on the surface of the tube can be thoroughly and evenly ground away, effectively removing the iron oxide generated during the hot rolling process of the seamless titanium tube and significantly improving the finished product quality of the seamless titanium tube.

[0007] Preferably, a grinding plate is installed on the I-shaped plate, and the grinding plate is positioned between two conveying rollers and directly below the pipe. When using this device, by positioning the grinding plate between the two conveying rollers, interference can be avoided during the upward movement of the grinding plate, ensuring the smooth upward movement of the grinding plate.

[0008] Preferably, multiple conveying rollers are installed between the two support plates via a rotating shaft. A third motor is installed on one of the support plates. The output end of the third motor is connected to one end of the rotating shaft at the end. When conveying, the third motor is started to make the conveying rollers rotate, thereby conveying the pipe.

[0009] Preferably, each support plate is equipped with two fixing blocks, and each fixing block is equipped with a third pneumatic cylinder. The working end of each third pneumatic cylinder is equipped with a third pneumatic rod, and the other end of each third pneumatic rod is fixed to a limit plate. Before conveying, the third pneumatic cylinder operates to make the third pneumatic rod drive the limit plates on both sides to move closer to each other until the distance between the two limit plates meets the width of the pipe to be processed. The third pneumatic cylinder stops operating, thereby limiting the pipe and preventing the pipe from deviating or falling during the conveying process, ensuring the stable conveying of the pipe.

[0010] Preferably, a feeding mechanism is provided at one end of the support plate away from the third motor. The feeding mechanism includes two vertical plates, with a hopper fixedly connected to the top of the two vertical plates. A rotating rod is rotatably installed at the bottom end of the hopper, and a baffle is fitted on the rotating rod. A fourth motor is installed on the side wall of the hopper, and the output end of the fourth motor is connected to one end of the rotating rod. During feeding, the third motor is started, causing the rotating rod to drive the baffle to rotate and open the hopper opening, thereby allowing the metal billet to be fed into the conveying mechanism. After the metal billet has been fed, the rotating rod is reversed by the operation of the third motor, thereby sealing the hopper opening. This structure allows for continuous and intermittent feeding, avoiding the accumulation of metal billets on the conveying mechanism, and facilitating the subsequent removal of iron oxide from the pipes one by one.

[0011] The advantages of this utility model are:

[0012] 1. In the hot rolling process of this utility model, in order to remove the iron oxide generated on the surface of the seamless titanium tube during hot rolling, the heated metal billet is first transported to the iron oxide removal mechanism area. Then, the first pneumatic cylinder is activated, causing the first pneumatic rod to drive the lifting block to move down along the slide groove, thereby causing the contact head to move down as well, until the contact head moves to both ends of the seamless titanium tube. Then, the first motor is activated, causing the threaded rod to rotate. With the cooperation of the limiting rod, the two movable blocks drive the two contact heads to stably approach each other. As the contact heads gradually move, Two contact heads are inserted into both ends of the tube to fix it in place. Then, the second pneumatic cylinder operates to move the second pneumatic rod to move the I-shaped plate and the grinding plate up until the grinding plate is in contact with the bottom of the tube. Then, the second electric motor operates to make the contact heads rotate the fixed tube. Through the rotation of the seamless titanium tube, the iron oxide on the surface of the tube can be ground away completely and evenly. This can effectively remove the iron oxide generated during the hot rolling process of the seamless titanium tube and significantly improve the finished product quality of the seamless titanium tube.

[0013] 2. In this invention, during material feeding, the third motor is started, causing the rotating rod to drive the baffle to rotate and open the hopper opening, thereby allowing the metal billet to be fed into the conveying mechanism. After the metal billet has been fed, the third motor operates to reverse the rotating rod, thereby sealing the hopper opening. This structure allows for continuous and intermittent feeding, avoiding the accumulation of metal billet on the conveying mechanism and facilitating subsequent iron oxide removal treatment of the pipes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device;

[0016] Figure 2 A schematic diagram of the three-dimensional structure of the iron oxide removal mechanism;

[0017] Figure 3 A cross-sectional three-dimensional structural schematic diagram of the iron oxide removal mechanism;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the I-shaped component;

[0019] Figure 5 A schematic diagram of the three-dimensional structure of the conveying limiting mechanism;

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the feeding mechanism.

[0021] In the diagram: 1. Support plate; 2. Vertical plate; 3. Slide groove; 4. Lifting block; 5. First pneumatic cylinder; 6. Threaded rod; 7. First electric motor; 8. Limiting rod; 9. Movable block; 10. Fixed plate; 11. Contact head; 12. Second electric motor; 13. Second pneumatic cylinder; 14. Second pneumatic rod; 15. I-shaped plate; 16. Grinding plate; 17. Conveying roller; 18. Third electric motor; 19. Fixed block; 20. Third pneumatic cylinder; 21. Limiting plate; 22. Vertical plate; 23. Hopper; 24. Fourth electric motor; 25. Baffle. Detailed Implementation

[0022] 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 scope of protection of the present utility model.

[0023] Please see Figure 1-4As shown, a hot rolling device for pipes includes two support plates 1, with a vertical plate 2 installed at the middle of each support plate 1. Each vertical plate 2 has a groove 3, and a lifting block 4 is installed within each groove 3. A first pneumatic cylinder 5 is installed at the top of each vertical plate 2, and a first pneumatic rod is fitted to the actuating end of each cylinder 5. The bottom end of the first pneumatic rod is fixed to the lifting block 4. Threaded rods 6 are rotatably mounted on both lifting blocks 4. A first motor 7 is installed on one of the lifting blocks 4, and the output end of the first motor 7 is connected to one end of the threaded rod 6. Movable blocks 9 are fitted at both ends of the threaded rod 6. A limit rod is fixed between the two lifting blocks 4. 8. The limiting rod 8 passes through the movable block 9. A fixed plate 10 is installed at the bottom of each of the two movable blocks 9. A contact head 11 is installed on each of the two fixed plates 10 via a rotating shaft. A second motor 12 is installed on the side wall of one of the fixed plates 10. The output end of the second motor 12 is connected to one end of one of the rotating shafts. Two second pneumatic cylinders 13 are installed on the top side of each support plate 1. Two second pneumatic cylinders 13 on the same side are located on opposite sides of the upright plate 2. A second pneumatic rod 14 is fitted to the actuating end of each second pneumatic cylinder 13. An I-shaped plate 15 is installed at the bottom of the four second pneumatic rods 14. A grinding plate 1 is installed on the I-shaped plate 15. 6. The grinding plate 16 is positioned between the two conveying rollers 17 and directly below the tube. During hot rolling, in order to remove the iron oxide generated on the surface of the seamless titanium tube during hot rolling, the heated metal billet is first fed into the conveying mechanism through the hopper 23 and conveyed to the iron oxide removal mechanism area by the conveying rollers 17. Then, the first pneumatic cylinder 5 is activated, causing the first pneumatic rod to drive the lifting block 4 to move down along the slide 3, thereby causing the contact head 11 to move down as well, until the contact head 11 moves down to both ends of the seamless titanium tube. Then, the first motor 7 is activated, causing the threaded rod 6 to rotate. With the cooperation of the limit rod 8, the two movable blocks 9 drive the two contact heads 1 1. Stable mutual approach: As the contact heads 11 gradually move, they insert into the two ends of the tube, thus fixing the tube. Then, the second pneumatic cylinder 13 operates, causing the second pneumatic rod 14 to drive the I-shaped plate 15 and the grinding plate 16 upward until the grinding plate 16 moves up to contact the bottom side of the tube. Then, the second motor 12 operates, causing the contact heads 11 to drive the fixed tube to rotate. Through the rotation of the seamless titanium tube, the iron oxide on the surface of the tube can be ground away comprehensively and evenly, effectively removing the iron oxide generated during the hot rolling process of the seamless titanium tube, and significantly improving the finished product quality of the seamless titanium tube.

[0024] Please see Figure 5-6As shown, multiple conveying rollers 17 are installed between two support plates 1 via a rotating shaft. A third motor 18 is installed on one of the support plates 1, and the output end of the third motor 18 is connected to one end of the rotating shaft at the end. Two fixing blocks 19 are installed on each support plate 1, and a third pneumatic cylinder 20 is installed on each fixing block 19. A third pneumatic rod is fitted to the working end of each third pneumatic cylinder 20, and a limit plate 21 is fixed to the other end of each third pneumatic rod. During conveying, the third motor 18 is started to make the conveying rollers 17 rotate, thereby conveying the pipe. Before conveying, the third pneumatic cylinder 20 is operated to make the third pneumatic rod drive the limit plates 21 on both sides to move closer to each other until the distance between the two limit plates 21 meets the width of the pipe to be processed. The third pneumatic cylinder 20 stops operating, thereby limiting the pipe and preventing the pipe from deviating or falling during the conveying process, ensuring the stable conveying of the pipe.

[0025] A feeding mechanism is provided at one end of the support plate 1 away from the third motor 18. The feeding mechanism includes two vertical plates 22, and a hopper 23 is fixedly connected to the top of the two vertical plates 22. A rotating rod is rotatably installed at the bottom end of the hopper 23, and a baffle 25 is fitted on the rotating rod. A fourth motor 24 is installed on the side wall of the hopper 23, and the output end of the fourth motor 24 is connected to one end of the rotating rod. When feeding, the third motor 18 is started, which causes the rotating rod to drive the baffle 25 to rotate, opening the opening of the hopper 23, so that the metal billet can be put into the conveying mechanism. After the metal billet is put in, the third motor 18 is operated to reverse the rotating rod, thereby sealing the opening of the hopper 23. This structure allows for continuous and intermittent feeding, avoiding the accumulation of metal billet on the conveying mechanism, and facilitating the subsequent removal of iron oxide from the pipes one by one.

[0026] Working Principle: During the hot rolling process of seamless titanium tubes, iron oxide is generated on their surface. Existing hot rolling equipment cannot automatically remove the iron oxide from the surface of seamless titanium tubes. If the generated iron oxide is not removed, it is easily pressed into the material after leveling, which will seriously affect the quality of the finished seamless titanium tube. Therefore, a hot rolling device for tubes is proposed to address the above problem. During the hot rolling process, in order to remove the iron oxide generated on the surface of the seamless titanium tube, the heated metal billet is first fed into the conveying mechanism through the hopper 23 and conveyed to the iron oxide removal mechanism area by the conveying roller 17. Then, the first pneumatic cylinder 5 is activated, causing the first pneumatic rod to drive the lifting block 4 to move down along the slide 3, thereby causing the contact head 11 to move down as well, until the contact head 11 moves down to both ends of the seamless titanium tube. The first motor 7 is started, causing the threaded rod 6 to rotate. With the cooperation of the limiting rod 8, the two movable blocks 9 drive the two contact heads 11 to move closer to each other stably. As the contact heads 11 gradually move, they insert into the two ends of the tube, thus fixing the tube. Then, the second pneumatic cylinder 13 operates, causing the second pneumatic rod 14 to move the I-shaped plate 15 and the grinding plate 16 upward until the grinding plate 16 moves up to contact the bottom side of the tube. Then, the second motor 12 operates, causing the contact heads 11 to rotate the fixed tube. Through the rotation of the seamless titanium tube, the iron oxide on the surface of the tube can be ground away completely and evenly. This effectively removes the iron oxide generated during the hot rolling process of the seamless titanium tube, significantly improving the finished product quality of the seamless titanium tube.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pipe hot rolling apparatus, characterized in that: It includes two support plates (1), each with a vertical plate (2) installed in the middle. Each vertical plate (2) has a groove (3) and a lifting block (4) installed within each groove (3). Each vertical plate (2) has a first pneumatic cylinder (5) installed at its top. The working end of each first pneumatic cylinder (5) is fitted with a first pneumatic rod, the bottom end of which is fixed to the lifting block (4). The two lifting blocks (4) are rotatably fitted with threaded rods (6). One of the lifting blocks (4) has a first motor (7) installed on it. The output end of the first motor (7) is connected to one end of the threaded rod (6). Both ends of the threaded rod (6) are fitted with movable blocks (9). The two lifting blocks (4) are fixedly connected. A limit rod (8) is connected and the limit rod (8) is set through the movable block (9). A fixed plate (10) is installed at the bottom of both movable blocks (9). A contact head (11) is installed on both fixed plates (10) through a rotating shaft. A second motor (12) is installed on the side wall of one of the fixed plates (10). The output end of the second motor (12) is connected to one end of one of the rotating shafts. Two second pneumatic cylinders (13) are installed on the top side of each support plate (1). The two second pneumatic cylinders (13) on the same side are located on both sides of the upright plate (2). A second pneumatic rod (14) is assembled at the working end of each second pneumatic cylinder (13). An I-shaped plate (15) is installed at the bottom of the four second pneumatic rods (14).

2. The hot rolling apparatus for pipes according to claim 1, characterized in that: A grinding plate (16) is installed on the I-shaped plate (15), and the grinding plate (16) is disposed between the two conveying rollers (17) and located directly below the pipe.

3. The hot rolling apparatus for pipes according to claim 1, characterized in that: Multiple conveying rollers (17) are installed between the two support plates (1) via a rotating shaft. A third motor (18) is installed on one of the support plates (1), and the output end of the third motor (18) is connected to one end of the rotating shaft at the end.

4. A hot rolling apparatus for pipes according to claim 1, characterized in that: Two fixing blocks (19) are installed on each support plate (1), and a third pneumatic cylinder (20) is installed on each fixing block (19). A third pneumatic rod is assembled at the working end of each third pneumatic cylinder (20), and a limit plate (21) is fixed to the other end of each third pneumatic rod.

5. A hot rolling apparatus for pipes according to claim 1, characterized in that: A feeding mechanism is provided at one end of the support plate (1) away from the third motor (18). The feeding mechanism includes two vertical plates (22), and a hopper (23) is fixedly connected to the top of the two vertical plates (22).

6. A hot rolling apparatus for pipes according to claim 5, characterized in that: A rotating rod is rotatably mounted on the bottom end of the hopper (23), and a baffle (25) is fitted on the rotating rod. A fourth motor (24) is mounted on the side wall of the hopper (23), and the output end of the fourth motor (24) is connected to one end of the rotating rod.

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