A hot forming equipment for uniform cross-section boron steel pipe

Abstract

The present invention relates to the field of hot forming technology, specifically to a hot forming device for a uniform cross-section boron steel pipe, comprising a shell, a device cavity, which is opened inside the shell, and a sliding cavity is symmetrically opened inside the shell, and the side walls of the two sliding cavities are fixedly connected with elastic air bags, and the first one-way valve and the second one-way valve matched with the elastic air bags are symmetrically fixedly installed inside the shell. The present invention discharges the air in the device cavity through the first one-way valve and the second one-way valve through the compression and extension of the elastic air bag, reducing the contact between the steel pipe and the air, and through the rotation of the double-headed motor, the gear is threadedly connected to the threaded rod, and the threaded rod moves up and down, driving the slide plate to move up and down, achieving the purpose of opening and closing the pipe hole, and the motor is connected to the second gear through a steel belt, so that the second gear rotates, and then drives the first gear to rotate, and finally the steel pipe is conveyed through the conveyor belt.

Description

Technical Field

[0001] The invention relates to the technical field of hot forming, in particular to hot forming equipment for a boron steel pipe with a uniform cross-section. Background Art

[0002] As a series of hot-formed steel pipes, the production process of boron steel pipes is divided into two stages: forming and quenching and cooling. In the forming stage, it needs to be formed by die stamping at high temperature; in the quenching and cooling stage, it is necessary to control a certain cooling rate to achieve the transformation from austenite microstructure to martensite microstructure, thereby obtaining extremely high strength and hardness. Depending on the type of boron steel, its strength can reach 500-2000MPa.

[0003] When the workpiece is heated, it needs to be transported to the press. However, in this process, the workpiece will be exposed to the air. The workpiece at high temperature is easily oxidized when encountering air, which will have a great impact on the forming and characteristics of the steel pipe.

[0004] Therefore, a hot forming equipment for boron steel pipes with uniform cross-section is proposed. Summary of the invention

[0005] The object of the present invention is to provide a hot forming equipment for boron steel pipes with uniform cross-sections. Through the compression and extension of the elastic airbag, the air in the device cavity is discharged through the first one-way valve and the second one-way valve, thereby reducing the contact between the steel pipe and the air. Through the rotation of the double-headed motor, the gear is threadedly connected to the threaded rod, and the threaded rod moves up and down, driving the slide plate to move up and down, thereby achieving the purpose of opening and closing the pipe hole. The motor is connected to the second gear through a steel belt, so that the second gear rotates, and then drives the first gear to rotate, and finally the steel pipe is conveyed through the conveyor belt to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A hot forming device for a uniform-section boron steel pipe comprises a shell and a device cavity which is opened inside the shell. The shell has sliding cavities symmetrically opened inside. The side walls of the two sliding cavities are fixedly connected with elastic air bags. A first one-way valve and a second one-way valve which cooperate with the elastic air bags are symmetrically fixedly installed inside the shell.

[0008] Through the compression and extension of the elastic airbag, the air in the device cavity is discharged through the first one-way valve and the second one-way valve, thereby reducing the contact between the steel pipe and the air.

[0009] Preferably, the first one-way valve only allows air inside the device cavity to enter the interior of the elastic airbag, and the second one-way valve only allows air inside the elastic airbag to enter the outside of the shell. A semicircular groove is provided on the top wall of the device cavity, and a heat insulation layer is fixedly connected to the side wall of the semicircular groove. A rotating shaft is rotatably installed inside the semicircular groove, and a turntable is fixedly installed on the rotating shaft. Both ends of the rotating shaft pass through the shell and extend into the sliding cavity. Both ends of the rotating shaft are fixedly connected to a rotating head inside the sliding cavity, and one end of the two elastic airbags is in close contact with the rotating head. A plurality of strip cavities are provided at equal intervals in the circumferential direction of the interior of the turntable, and the bottom walls of the plurality of strip cavities are fixedly connected to springs, and one end of the plurality of springs is fixedly connected to a counterweight block. The spring is made of nickel-titanium alloy, half of the turntable is inside the device cavity, and the other half of the turntable is inside the semicircular groove.

[0010] When the steel pipe enters the device cavity, the spring will deform and pop out because the turntable is halfway through the device cavity and will be heated. Due to the setting of the heat insulation layer, the turntable will be partially heated, and then the spring in the area where the turntable rotates to the device cavity will be deformed, causing the center of gravity of the turntable to shift toward the inside of the device cavity. Then the turntable will rotate. When the heated area of ​​the turntable rotates to the inside of the semicircular groove, it will no longer be heated and will restore its initial temperature. Then the spring will restore its initial shape and drive the counterweight block to reset. At this time, the area where the turntable rotates to the device cavity will be heated again and drive the counterweight block to move, so that the center of gravity of the turntable is always toward the device cavity. The interior of the cavity is deviated, and the setting of the heat insulation layer can prevent heat from being transferred to the rest of the turntable, thereby causing a large temperature difference on both sides of the turntable, effectively increasing the change in the center of gravity, thereby increasing the rotation force of the turntable, and then continuing to rotate. The rotating turntable also drives the shaft to rotate, and the rotation of the shaft drives the rotor to rotate. Due to the irregular shape of the rotor, the elastic airbag will be periodically squeezed when the rotor rotates. The elastic airbag itself has a restoring elastic force, so the elastic airbag is constantly compressed and stretched, and the air in the device cavity is sucked into the elastic airbag and then discharged, reducing the contact between the steel pipe and the air, and reducing the possibility of oxidation of the steel pipe.

[0011] Preferably, a long cavity is opened inside the bottom wall of the shell, a double-headed motor is fixedly installed inside the long cavity, both ends of the double-headed motor are fixedly connected with rotating rods, pipe holes for passing steel pipes are opened on both sides of the shell, and cavities are opened on both sides of the shell, both of the two cavities are communicated with the pipe holes, and the insides of the two cavities are slidably connected with slides that cooperate with the pipe holes, one end of the two slides is fixedly connected with threaded rods, one end of the two rotating rods passes through the shell and extends to the inside of the cavity, one end of the two rotating rods is fixedly connected with gears inside the cavity, and the two gears are threadedly connected to the threaded rod.

[0012] The double-headed motor starts and rotates, driving the rotating rod to rotate, the rotating rod rotation drives the gear to rotate, the gear rotation drives the threaded rod to move up and down, the threaded rod that moves up and down drives the slide to move up and down. When moving up, the slide blocks the pipe hole to achieve the effect of closing the door. When moving down, the slide moves away to achieve the effect of opening the door. Both sides can be opened and closed at the same time, and the steel pipes can be simultaneously entered and exited, which is more efficient.

[0013] Preferably, a fixing plate is symmetrically fixedly installed on the bottom wall of the device cavity, and the two fixing plates are rotatably connected to the first gear and the second gear respectively. The first gear and the second gear are connected by a conveyor belt. A fixing frame is fixedly installed on the bottom wall of the device cavity, and a motor is fixedly installed on the upper surface of the fixing frame. The motor is connected to the second gear through a steel belt.

[0014] When the steel pipe enters the device cavity, the motor starts, and the motor drives the second gear to rotate through the steel belt. The rotation of the second gear drives the first gear to rotate through the conveyor belt, thereby realizing the transportation of the steel pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Through the compression and extension of the elastic airbag, the air in the device cavity is discharged through the first one-way valve and the second one-way valve, reducing the contact between the steel pipe and the air.

[0017] 2. Through the rotation of the double-headed motor, the gear is threadedly connected to the threaded rod, and the threaded rod moves up and down, driving the slide plate to move up and down, thereby achieving the purpose of opening and closing the pipe hole.

[0018] 3. The motor is connected to the second gear through a steel belt, so that the second gear rotates, which drives the first gear to rotate, and finally transmits the steel pipe through the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a cross-sectional view of the present invention;

[0021] Figure 3 is a side view of the turntable of the present invention;

[0022] Figure 4 For the present invention Figure 2 A partial enlarged view of the middle part;

[0023] Figure 5 For the present invention Figure 2 A partial enlarged view of point B in the middle.

[0024] In the figure: 1. shell; 2. device cavity; 3. semicircular groove; 4. rotating shaft; 5. rotating head; 6. sliding cavity; 7. elastic airbag; 8. first one-way valve; 9. second one-way valve; 10. turntable; 11. strip cavity; 12. spring; 13. counterweight; 14. thermal insulation layer; 15. pipe hole; 16. long cavity; 17. double-headed motor; 18. rotating rod; 19. cavity; 20. gear; 21. slide plate; 22. threaded rod; 23. fixing plate; 24. fixing frame; 25. motor; 26. first gear; 27. second gear; 28. conveyor belt. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figures 1 to 5 The present invention provides a hot forming equipment for a uniform cross-section boron steel pipe, and the technical solution is as follows:

[0029] A hot forming device for a uniform cross-section boron steel pipe includes a hot forming device for a uniform cross-section boron steel pipe, including a shell 1, a device cavity 2, which is opened inside the shell 1, and a sliding cavity 6 is symmetrically opened inside the shell 1. The side walls of the two sliding cavities 6 are fixedly connected with elastic air bags 7. The first one-way valve 8 and the second one-way valve 9 that cooperate with the elastic air bags 7 are symmetrically fixedly installed inside the shell 1.

[0030] Through the compression and extension of the elastic airbag 7, the air in the device cavity 2 is discharged through the first one-way valve 8 and the second one-way valve 9, reducing the contact between the steel pipe and the air.

[0031] As an embodiment of the present invention, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the first one-way valve 8 only allows the air inside the device cavity 2 to enter the interior of the elastic airbag 7, and the second one-way valve 9 only allows the air inside the elastic airbag 7 to enter the outside of the shell 1. A semicircular groove 3 is provided on the top wall of the device cavity 2, and a heat insulation layer 14 is fixedly connected to the side wall of the semicircular groove 3. A rotating shaft 4 is rotatably installed inside the semicircular groove 3, and a rotating disk 10 is fixedly installed on the rotating shaft 4. Both ends of the rotating shaft 4 pass through the shell 1 and extend into the sliding cavity 6. Both ends of the rotating shaft 4 are fixedly connected to a rotating head 5 inside the sliding cavity 6. One end of the two elastic airbags 7 is in close contact with the rotating head 5. A plurality of strip cavities 11 are provided at equal intervals in the circumferential direction of the rotating disk 10, and the bottom walls of the plurality of strip cavities 11 are fixedly connected to springs 12, and one end of the plurality of springs 12 is fixedly connected to a counterweight 13. The material of the spring 12 is nickel-titanium alloy. Half of the rotating disk 10 is inside the device cavity 2, and the other half of the rotating disk 10 is inside the semicircular groove 3.

[0032] When the steel pipe enters the device cavity 2, since the turntable 10 is in the half of the device cavity 2 and will be heated, the spring 12 will be deformed and pop out. Due to the setting of the heat insulation layer 14, the turntable 10 will be partially heated, and then the spring 12 in the area where the turntable 10 rotates to the device cavity 2 will be deformed, so that the center of gravity of the turntable 10 will shift toward the inside of the device cavity 2, and then the turntable 10 will rotate. When the heated area of ​​the turntable 10 rotates to the inside of the semicircular groove 3, it will no longer be heated and will restore its initial temperature. Then the spring 12 restores its initial shape and drives the counterweight block 13 to reset. At this time, the area where the turntable 10 rotates to the device cavity 2 will be heated again, thereby driving the counterweight block 13 to move, so that the turntable 10 The center of gravity always deviates toward the inside of the device cavity 2, and the setting of the heat insulation layer 14 can prevent heat from being transferred to the rest of the turntable 10, thereby causing a large temperature difference change on both sides of the turntable 10, effectively increasing the change in the center of gravity, thereby increasing the rotation force of the turntable 10, and then continuing to rotate. The rotating turntable 10 also drives the shaft 4 to rotate, and the rotation of the shaft 4 drives the rotating head 5 to rotate. Due to the irregular shape of the rotating head 5, the rotating head 5 will have a periodic squeeze on the elastic airbag 7 when it rotates. The elastic airbag 7 has its own restoring elastic force, so the elastic airbag 7 is continuously compressed and then stretched, and the air in the device cavity 2 is sucked into the elastic airbag 7 and then discharged, reducing the contact between the steel pipe and the air, and reducing the possibility of the steel pipe being oxidized.

[0033] As an embodiment of the present invention, refer to Figure 1 and Figure 2 A long cavity 16 is provided inside the bottom wall of the shell 1, and a double-headed motor 17 is fixedly installed inside the long cavity 16. Both ends of the double-headed motor 17 are fixedly connected with rotating rods 18. Pipe holes 15 for passing steel pipes are provided on both sides of the shell 1. Cavities 19 are provided on both sides of the shell 1. The two cavities 19 are communicated with the pipe holes 15. Slide plates 21 cooperating with the pipe holes 15 are slidably connected inside the two cavities 19. One end of the two slide plates 21 is fixedly connected with a threaded rod 22. One end of the two rotating rods 18 passes through the shell 1 and extends to the inside of the cavity 19. One end of the two rotating rods 18 is fixedly connected with a gear 20 inside the cavity 19, and the two gears 20 are threadedly connected with the threaded rod 22.

[0034] The double-headed motor 17 starts to rotate, driving the rotating rod 18 to rotate, the rotating rod 18 rotates and drives the gear 20 to rotate, the gear 20 rotates and drives the threaded rod 22 to move up and down, the threaded rod 22 that moves up and down drives the slide plate 21 to move up and down, when moving up, the slide plate 21 blocks the pipe hole 15 to achieve the effect of closing the door, and when moving down, the slide plate 21 moves away to achieve the effect of opening the door, the two sides can be opened and closed at the same time, the steel pipe can be simultaneously entered and exited, and the efficiency is higher.

[0035] As an embodiment of the present invention, refer to Figure 2A fixing plate 23 is symmetrically fixedly installed on the bottom wall of the device cavity 2. The two fixing plates 23 are rotatably connected to the first gear 26 and the second gear 27 respectively. The first gear 26 and the second gear 27 are connected by a conveyor belt 28. A fixing frame 25 is fixedly installed on the bottom wall of the device cavity 2. A motor 25 is fixedly installed on the upper surface of the fixing frame 25. The motor 25 is transmission-connected to the second gear 27 through a steel belt.

[0036] When the steel pipe enters the device cavity 2, the motor 25 is started, and the motor 25 drives the second gear 27 to rotate through the steel belt. The rotation of the second gear 27 drives the first gear 26 to rotate through the conveyor belt 28, thereby realizing the transportation of the steel pipe.

[0037] Working principle: When the steel pipe enters the device cavity 2, the spring 12 will be deformed and pop out because the turntable 10 is in the half of the device cavity 2 and will be heated. Due to the setting of the heat insulation layer 14, the turntable 10 will be partially heated, and then the spring 12 in the area of ​​the turntable 10 rotating to the device cavity 2 will be deformed, so that the center of gravity of the turntable 10 will shift toward the inside of the device cavity 2, and then the turntable 10 will rotate. When the heated area of ​​the turntable 10 rotates to the inside of the semicircular groove 3, it will no longer be heated and will return to its initial temperature. Then the spring 12 returns to its original shape and drives the counterweight 13 to reset. At this time, the area inside the turntable 10 that rotates to the device cavity 2 will be heated again and drive the counterweight 13 to move, so that the center of gravity of the turntable 10 always deviates to the inside of the device cavity 2. The setting of the heat insulation layer 14 can prevent the heat from being transferred to the rest of the turntable 10, thereby causing a large temperature difference on both sides of the turntable 10, effectively increasing the amount of change in the center of gravity, thereby increasing the rotation force of the turntable 10, and then continuing to rotate. The rotating turntable 10 also drives the rotating The shaft 4 rotates, and the rotation of the shaft 4 drives the rotating head 5 to rotate. Due to the irregular shape of the rotating head 5, the rotating head 5 will periodically squeeze the elastic airbag 7 when it rotates. The elastic airbag 7 has its own elastic force to recover, so the elastic airbag 7 is constantly compressed and stretched, and the air in the device cavity 2 is sucked into the elastic airbag 7 and then discharged, which reduces the contact between the steel pipe and the air and reduces the possibility of oxidation of the steel pipe. The double-headed motor 17 starts to rotate, driving the rotating rod 18 to rotate, the rotating rod 18 rotates to drive the gear 20 to rotate, and the gear 20 rotates to drive the screw The threaded rod 22 moves up and down, and the threaded rod 22 that moves up and down drives the slide plate 21 to move up and down. When moving up, the slide plate 21 blocks the pipe hole 15 to achieve the effect of closing the door. When moving down, the slide plate 21 moves away to achieve the effect of opening the door. The two sides can be opened and closed at the same time, and the steel pipe can be simultaneously entered and exited, which is more efficient. When the steel pipe enters the device cavity 2, the motor 25 is started, and the motor 25 drives the second gear 27 to rotate through the steel belt. The rotation of the second gear 27 drives the first gear 26 to rotate through the conveyor belt 28, thereby realizing the transportation of the steel pipe.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot forming device for a uniform cross-section boron steel pipe, comprising a housing (1); A device cavity (2) is provided inside the housing (1); Features: The housing (1) is symmetrically provided with sliding cavities (6), and the side walls of the two sliding cavities (6) are fixedly connected with elastic airbags (7). The housing (1) is symmetrically fixedly provided with a first one-way valve (8) and a second one-way valve (9) that cooperate with the elastic airbags (7); the first one-way valve (8) only allows the air inside the device cavity (2) to enter the elastic airbag (7), and the second one-way valve (9) only allows the air inside the elastic airbag (7) to enter the outside of the housing (1); The top wall of the device cavity (2) is provided with a semicircular groove (3), the side wall of the semicircular groove (3) is fixedly connected with a heat insulation layer (14), a rotating shaft (4) is rotatably mounted inside the semicircular groove (3), and a rotating disk (10) is fixedly mounted on the rotating shaft (4); Both ends of the rotating shaft (4) penetrate the housing (1) and extend into the sliding cavity (6); both ends of the rotating shaft (4) are fixedly connected to a rotating head (5) inside the sliding cavity (6); one end of the two elastic air bags (7) is in close contact with the rotating head (5); when the rotating head rotates, the elastic air bags are periodically squeezed; The rotating disk (10) is provided with a plurality of strip-shaped cavities (11) at equal intervals in the circumferential direction, the bottom walls of the plurality of strip-shaped cavities (11) are fixedly connected to springs (12), one ends of the plurality of springs (12) are fixedly connected to counterweights (13), and the material of the springs (12) is nickel-titanium alloy; One half of the rotating disk (10) is inside the device cavity (2), and the other half of the rotating disk (10) is inside the semicircular groove (3); A long cavity (16) is provided inside the bottom wall of the housing (1), a double-headed motor (17) is fixedly installed inside the long cavity (16), and both ends of the double-headed motor (17) are fixedly connected to a rotating rod (18); The shell (1) is provided with tube holes (15) for passing the steel tube on both sides, and the shell (1) is provided with cavities (19) on both sides, the two cavities (19) are both in communication with the tube holes (15), the interiors of the two cavities (19) are both slidably connected with slide plates (21) that match the tube holes (15), and one end of the two slide plates (21) is fixedly connected with a threaded rod (22); One end of each of the two rotating rods (18) passes through the housing (1) and extends into the interior of the cavity (19); one end of each of the two rotating rods (18) is fixedly connected to a gear (20) inside the cavity (19); and each of the two gears (20) is threadedly connected to a threaded rod (22); When the steel pipe enters the device cavity, the turntable (10) is heated in the half of the device cavity, and the spring (12) will be deformed and popped out. Due to the setting of the heat insulation layer (14), the turntable will be partially heated, and the spring (12) in the device cavity area will be deformed when the turntable rotates inside the device cavity, so that the center of gravity of the turntable will shift toward the inside of the device cavity (2), and then the turntable will rotate; when the heated area of ​​the turntable rotates to the inside of the semicircular groove (3), it will no longer be heated and will return to its initial temperature. Then the spring (12) will return to its initial shape and drive the counterweight block (13) to reset. At this time, the area inside the turntable that rotates to the device cavity (2) will be heated again and drive the counterweight (13) to move, so that the center of gravity of the turntable is always deviated from the inside of the device cavity, and the heat insulation layer (14) prevents the heat from being transferred to the rest of the turntable, so that the temperature difference on both sides of the turntable changes greatly, effectively increasing the change in the center of gravity and the rotation force of the turntable, thereby continuing to rotate; the rotating turntable drives the rotating shaft (4) to rotate, and the rotating shaft drives the rotating head (5) to rotate. Due to the irregular shape of the rotating head (5), the rotating head will periodically squeeze the elastic airbag (7) when it rotates.

2. The hot forming equipment for a uniform cross-section boron steel pipe according to claim 1, characterized in that: A fixing plate (23) is symmetrically fixedly mounted on the bottom wall of the device cavity (2), and the two fixing plates (23) are respectively rotatably connected to a first gear (26) and a second gear (27), and the first gear (26) and the second gear (27) are connected via a conveyor belt (28). A fixing frame (25) is fixedly mounted on the bottom wall of the device cavity (2), and a motor (25) is fixedly mounted on the upper surface of the fixing frame (25), and the motor (25) is transmission-connected to the second gear (27) via a steel belt.

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