Equipment for punching seamless steel pipe and hot rolling production method thereof

Abstract

The invention relates to equipment for punching a seamless steel pipe and a hot rolling production method of the equipment for punching the seamless steel pipe. The equipment comprises a storage assembly for storing blanks, a cutting assembly, a drilling assembly and a transferring assembly; the drilling assembly comprises a bearing table for bearing short materials, a first abutting plate, an abutting air cylinder, a second abutting plate, a drill bit, a drilling motor and a driving part, the first abutting plate is arranged on the bearing table, and the second abutting plate is slidably connected to the bearing table; the abutting air cylinder is used for driving the second abutting plate to move and making the first abutting plate and the second abutting plate abut against the two ends of the short material correspondingly, the drilling motor is slidably connected to the bearing table in the sliding direction of the second abutting plate, the drill bit is arranged on the drilling motor, and the driving part is used for driving the drilling motor to move. And the transfer assembly is used for transporting the drilled short material to a subsequent hot rolling process. The method has the effects of removing the center crack of the blank and reducing the rolling load in the subsequent hot rolling process.

Description

Technical Field

[0001] The present application relates to the field of seamless steel pipe production, and in particular to a device for punching seamless steel pipes and a hot rolling production method thereof. Background Art

[0002] Large-diameter high-alloy boiler pipes, as the preferred pipes for the inside of ultra-supercritical thermal power unit boilers and large pipelines, represent the highest level of high-pressure boiler pipe products. Such products are mainly applied to various large-scale power station boilers, gas turbine boilers, superheaters and other equipment components that bear high temperature and high pressure. The temperature, pressure and corrosion environment they bear are extremely harsh, and the mechanical and environmental conditions of use are also very strict, which exacerbates the damage and failure of large-diameter high-alloy seamless steel pipes. Moreover, the damage and failure of seamless steel pipes are extremely likely to cause faults or accidents in boiler equipment, seriously threatening the safety production of the user unit and even leading to major casualties. Therefore, the user unit has put forward higher requirements for the performance of large-diameter high-alloy boiler pipes, requiring seamless steel pipes to have high reliability, high strength, high toughness, high temperature resistance and corrosion resistance, and be able to be used in harsh environments and high-temperature conditions.

[0003] However, large-diameter high-alloy boiler pipes have difficulties in hot rolling, such as high alloy content, serious center cracks in continuous casting billets, large hot rolling deformation resistance, and easy cracking of steel pipes after rolling. At the same time, limited by the deformation capacity of the rolling mill, the hot rolling difficulty is extremely high, and there are risks of hot rolling jamming, power failure, and steel pipe cracking and scrapping. Summary of the Invention

[0004] In order to remove the center cracks of the billet and reduce the rolling load in the subsequent hot rolling process, the present application provides a device for punching seamless steel pipes and a hot rolling production method thereof. In a first aspect, the present application provides a device for punching seamless steel pipes, adopting the following technical solution: A device for punching seamless steel pipes includes a storage component for storing billets, a cutting component, a drilling component and a transfer component. The cutting component is used for cutting the billet into short materials. The drilling component includes a receiving table for receiving the short materials, a first abutting plate, an abutting cylinder, a second abutting plate, a drill bit, a drilling motor and a driving member. The first abutting plate is arranged on the receiving table. The second abutting plate is slidably connected to the receiving table. The abutting cylinder is used for driving the second abutting plate to move so that the first abutting plate and the second abutting plate respectively abut against both ends of the short material. The drilling motor is slidably connected to the receiving table along the sliding direction of the second abutting plate. The drill bit is arranged on the drilling motor. The driving member is used for driving the drilling motor to move. The transfer component is used for transporting the drilled short materials to the subsequent hot rolling process.

[0005] By adopting the above technical solution, the staff first transfer the blank on the storage component to the cutting component, and the cutting component cuts the blank into short materials, so as to meet the weight and size requirements of the finished pipe. After the cutting of the short materials is completed, they are moved to the drilling component, and the drilling component performs drilling operations on the short materials to remove the central crack of the blank and reduce the subsequent rolling load. The short materials after drilling are then moved to the transfer component and transferred to the subsequent hot rolling process by the transfer component; when drilling the short materials, the abutting cylinder moves the second abutting plate towards the first abutting plate until both ends of the short materials are abutted by the first abutting plate and the second abutting plate. Then, the staff drives the drilling motor to move along the length direction of the short materials through the driving member. The drilling motor drives the drill bit to rotate, and the drill bit drills the short materials. After the drilling is completed, the driving member drives the drilling motor to move away from the short materials until the drill bit disengages from the short materials.

[0006] Optionally, a blank dropping member is provided on the receiving table. The blank dropping member includes two rotating plates, two worm gears, two worm wheels and a blank dropping motor. The two rotating plates are rotatably connected to the receiving table along the length direction of the short materials. When the side walls of the two rotating plates abut, the two rotating plates form a V shape. The two worm wheels correspond to the two rotating plates, and the worm wheels are arranged on the rotating plates. The two worm gears correspond to the two worm wheels, and the worm gears are rotatably connected to the receiving table. The worm gears are engaged with the worm wheels. The two worm gears have opposite helix directions. The blank dropping motor is used to drive the two worm gears to rotate simultaneously. The transfer component is located directly below the receiving table.

[0007] By adopting the above technical solution, when the two rotating plates abut against each other, they form a V shape, so that the short materials are kept at the lowest position of the two rotating plates, realizing the positioning operation of the short materials. When the drilling of the short materials is completed, the staff can start the rotation of the worm gears. The worm gears drive the worm wheels to rotate, and the worm wheels drive the rotating plates to rotate. Since the two worm gears have opposite helix directions and the rotating plates are arranged in an open manner, the short materials after drilling fall onto the operating component. The worm gear and worm have a self-locking effect, reducing the situation where the position of the rotating plates changes due to the force on the short materials during the drilling process.

[0008] Optionally, the storage component includes a storage table and a feeding member. A blocking plate for restricting the blank from separating is provided on the storage table. The feeding member includes a guiding plate, a pushing table and a feeding cylinder. The pushing table is slidably connected to the storage table in the vertical direction. The feeding cylinder is used to drive the pushing table to move. The guiding plate is arranged on the pushing table, and the height of the guiding plate gradually decreases along the direction from the storage table to the cutting component. A through hole for the guiding plate to move is provided on the storage table.

[0009] By adopting the above technical solution, the storage table is used to store the blanks to be cut into short materials, and the baffle restricts the blanks from leaving the storage table. When it is necessary to move the blanks onto the cutting assembly, the operator lifts the pushing table through the feeding cylinder, so that the guiding plate passes through the through hole. The guiding plate causes the blanks to leave the storage table until the height of the guiding plate is higher than that of the baffle. The blanks enter the cutting assembly under the guidance of the guiding plate.

[0010] Optionally, the pushing table is located on the side of the baffle away from the storage table, the through hole penetrates the baffle, the storage table is rotatably connected to the pushing table by the guiding plate, and a torsion spring for maintaining the inclination angle of the guiding plate is further arranged on the pushing table.

[0011] By adopting the above technical solution, after the guiding plate sends the blank to the cutting assembly, the feeding cylinder drives the pushing table to retract, and the pushing table drives the guiding plate to move. Since there are still a large number of blanks on the storage table, the guiding plate will contact the blanks during the reset process, causing the guiding plate to rotate against the torsion force of the torsion spring until the guiding plate separates from the blanks, and the guiding plate is reset under the action of the torsion spring for subsequent transportation of the blanks into the cutting assembly.

[0012] Optionally, the cutting assembly includes a cutting frame, a moving table, a cutting table, a cutting cylinder, a cutting motor, a cutting saw blade, a linear motor, a pressing member and a pushing member. The cutting frame includes a placement frame and a positioning plate. The positioning plate is arranged on the placement frame. The cross-section of the placement frame is Y-shaped. The moving table is slidably connected to the cutting frame along the length direction of the blank. The cutting table is slidably connected to the moving table in the vertical direction. The cylinder body of the cutting cylinder is arranged on the moving table, and the piston rod of the cutting cylinder is arranged on the cutting table. The cutting motor is arranged on the cutting table, and the cutting saw blade is arranged on the cutting motor. The pressing member is used to press the blank on the placement frame, and the pushing member is used to keep one end of the blank in contact with the positioning plate. A guiding plate for introducing the short material after cutting into the drilling assembly is arranged on the placement frame.

[0013] By adopting the above technical solution, when the blank moves to the station where the cutting assembly is located, the blank will be received by the placement frame. At this time, the pushing member will make one end of the blank contact the positioning plate. Then, according to the required length of the short material, the operator adjusts the position of the moving table through the linear motor, drives the cutting table to move through the cutting cylinder, and the cutting table drives the cutting saw blade to approach the blank. The cutting motor rotates the cutting saw blade. During the process of cutting the blank to produce short materials, the pressing member presses the blank to reduce the movement of the blank relative to the placement frame. When the cutting saw blade cuts the blank into short materials, the short materials enter the drilling assembly under the guidance of the guiding plate. At this time, the pushing member drives the blank to move again until one end of the blank contacts the positioning plate again, and the above steps are repeated to cut the blank into multiple short materials of equal length.

[0014] Optionally, the pressing member includes two pressing rollers, a pressing seat and a pressing spring. The pressing seat is slidably connected to the cutting table in the vertical direction. The length direction of the pressing roller is parallel to the length direction of the blank. The pressing roller is rotatably connected to the pressing seat. The two pressing rollers are respectively located on both sides of the axis of the blank. The pressing spring is used to keep the pressing seat away from the cutting table.

[0015] By adopting the above technical solution, when the cutting cylinder drives the cutting table to move towards the blank, the pressing seat moves along with the cutting table until the pressing roller on the pressing seat abuts against the blank. The length of the pressing roller is parallel to the length of the blank, and the pressing rollers are located on both sides of the axis of the blank, so that the blank is kept at the lowest position of the placement rack. As the distance between the pressing seat and the cutting table gradually decreases, the pressing spring is compressed, so that the pressing roller keeps abutting against the blank. The structure of the pressing member is simple and convenient for the staff to operate.

[0016] Optionally, the pushing member includes a mounting block, a plurality of rollers, a plurality of synchronous gears, a synchronous belt and a synchronous motor. The mounting block is arranged on the placement rack. The plurality of rollers are distributed along the length direction of the blank. The rollers are rotatably connected to the mounting block. The plurality of synchronous gears correspond to the plurality of rollers one by one. The synchronous gears are arranged on the rollers. The synchronous belt is sleeved on the synchronous gears. The synchronous motor is used to drive one of the synchronous gears to rotate.

[0017] By adopting the above technical solution, after the cutting saw blade finishes cutting the short material, the cutting cylinder moves the cutting table away from the blank until the cutting saw blade disengages from the blank. Then the synchronous motor drives the synchronous gear to rotate, and all the synchronous gears are rotated through the synchronous belt. The synchronous gear drives the roller to rotate, and the roller keeps the blank abutted against the positioning plate.

[0018] Optionally, a sliding groove for the roller to disengage from the blank is formed on the placement rack. The placement rack is further provided with a driving member for driving the mounting block to approach or move away from the blank. The driving member includes a bidirectional screw, a driving motor, two connecting rods and two connecting blocks. The two connecting blocks are slidably connected to the placement rack in a direction of approaching or moving away from each other. The length of the bidirectional screw is parallel to the sliding direction of the connecting block. The bidirectional screw is rotatably connected to the placement rack. The two connecting blocks are respectively threadedly connected to opposite ends of the bidirectional screw with opposite thread directions. The driving motor is used to drive the bidirectional screw to rotate. The two connecting rods correspond to the two connecting blocks. One end of the connecting rod is rotatably connected to the connecting block, and the other end of the connecting rod is rotatably connected to the mounting block.

[0019] By adopting the above technical solution, when the blank is cut, the driving member does not need to drive the blank to move towards the positioning plate. At this time, the driving motor drives the bidirectional screw to rotate. The bidirectional screw drives two connecting blocks to approach each other, and two connecting rods rotate, causing the mounting block to move away from the blank. The roller disengages from the blank, and the blank remains stationary relative to the placement rack. The driving member reduces the long-term contact of the roller with the blank and reduces the pressure on the roller during the cutting process of the blank, prolonging the service life of the roller.

[0020] Optionally, the transfer assembly includes a transfer rack, two transfer rollers, a transfer motor, and a transfer belt. The transfer rack is located directly below the drilling assembly. The two transfer rollers are distributed along the length direction of the short material. The transfer rollers are rotatably connected to the transfer rack. The transfer belt is sleeved on the transfer rollers. The transfer motor is used to drive one of the transfer rollers to rotate. The transfer belt is provided with through holes for the chips generated during the drilling of the short material to fall through.

[0021] By adopting the above technical solution, when the short material is drilled, it enters the working position of the conveying assembly through the blank dropping member. The transfer belt is used to receive the short material. The transfer motor drives one of the transfer rollers to rotate, and the transfer roller moves the transfer belt. The transfer belt sends the short material to the next-step equipment in the hot rolling process. Since chips are generated during the drilling process, the chips also enter the transfer assembly with the blank dropping member. Through the through holes, the chips are separated from the short material, reducing the chips from entering the subsequent hot rolling process with the short material.

[0022] In a second aspect, a hot rolling production method provided by the present application adopts the following technical solution: It includes the following technological steps: S1: Cut the short material and drill holes. Use the above-mentioned equipment for punching seamless steel pipes to cut and drill the blank, thereby removing the center crack of the blank and reducing the rolling load; S2: Heat the short material to make the steel pipe soft and easy to shape; S3: Oblique rolling and reducing diameter, gradually thinning the wall thickness of the seamless pipe blank to form a rough pipe; S4: Cold drawing, stretching the rough pipe at room temperature to further reduce the outer diameter and wall thickness; S5: Finishing process, performing steps such as deburring, straightening, pickling, and cold treatment on the seamless steel pipe; S6: Inspection and warehousing.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. The drilling assembly is used to drill the short material after cutting to remove the center crack of the blank and reduce the subsequent rolling load; 2. The cutting assembly is used to cut the blank into short materials to meet the weight and size of the finished pipe; 3. The pressing member is used to keep the blank tightly pressed against the placement rack during the cutting process of the blank; 4. The pushing member is used to make one end of the blank abut against the positioning plate again after a short section of the blank is cut, so as to make the lengths of the cut short blanks consistent; 5. The transfer assembly is used to transport the short blanks that have completed drilling to the subsequent hot rolling process. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the equipment for punching seamless steel pipes.

[0025] Figure 2 It is Figure 1 a schematic structural diagram of the storage assembly in

[0026] Figure 3 It is Figure 1 a schematic structural diagram of the cutting assembly in

[0027] Figure 4 It is Figure 3 a schematic structural diagram of the pressing member in

[0028] Figure 5 It is Figure 3 an enlarged view of part A in

[0029] Figure 6 It is Figure 1 a schematic structural diagram of the drilling assembly in

[0030] Figure 7 It is Figure 6 a schematic structural diagram of the blanking member in

[0031] Figure 8 It is Figure 1 a schematic structural diagram of the transfer assembly in

[0032] Reference numerals: 1, storage component; 11, storage table; 12, feeding member; 121, guiding plate; 122, pushing table; 123, feeding cylinder; 124, torsion spring; 13, blocking plate; 14, through hole; 2, cutting component; 21, cutting frame; 211, placing frame; 212, positioning plate; 213, guiding plate; 214, placing cavity; 215, sliding groove; 22, moving table; 23, cutting table; 231, first bevel gear; 232, second bevel gear; 24, cutting cylinder; 25, cutting motor; 26, cutting saw blade; 27, linear motor; 28, pressing member; 281, pressing roller; 282, pressing seat; 283, pressing spring; 284, sliding rod; 29, pushing member; 291, mounting block; 292, roller; 293, synchronous gear; 294, synchronous belt; 295, synchronous motor; 3, drilling component; 31, receiving table; 32, first abutting plate; 321, first avoidance hole; 33, abutting cylinder; 34, second abutting plate; 341, second avoidance hole; 35, drill bit; 36, drilling motor; 37, driving member; 371, driving frame; 372, driving motor; 373, driving screw; 4, transfer component; 41, transfer frame; 42, transfer roller; 43, transfer motor; 44, transfer belt; 441, through hole; 45, sliding groove; 46, receiving box; 5, driving member; 51, bidirectional screw; 52, driving motor; 53, connecting rod; 54, connecting block; 6, blanking member; 61, rotating plate; 62, worm; 63, worm gear; 64, blanking motor. Detailed implementation manners

[0033] The following further elaborates on this application in conjunction with the Figure 1 - attached Figure 8 drawings for a more detailed description.

[0034] An embodiment of this application discloses a device for drilling seamless steel pipes. Referring to Figure 1 , a device for drilling seamless steel pipes includes a storage component 1, a cutting component 2, a drilling component 3, and a transfer component 4. The storage component 1, the cutting component 2, and the drilling component 3 are arranged in sequence, and the transfer component 4 is located directly below the drilling component 3. The storage component 1 is used for storing the blanks to be processed, the cutting component 2 is used for cutting the blanks into short materials according to the required production length, the drilling component 3 is used for drilling the short materials, and the transfer component 4 is used for transporting the drilled short materials to the subsequent hot rolling process equipment.

[0035] Referring to Figure 1 and Figure 2, the storage component 1 includes a storage table 11 and a feeding member 12. The upper end surface of the storage table 11 is inclined, and the height of the upper end surface of the storage table 11 gradually decreases in the direction close to the cutting component 2. A baffle 13 is fixedly arranged on the storage table 11. The baffle 13 is vertically arranged and is located at the lowest position of the upper end surface of the storage table 11. The upper end surface of the storage table 11 is used for placing blanks, and the length direction of the blank is parallel to the length direction of the storage table 11. The feeding member 12 includes a plurality of guiding plates 121, a pushing table 122 and two feeding cylinders 123. The pushing table 122 is located between the storage table 11 and the cutting component 2. The pushing table 122 is slidably connected to the storage table 11 in the vertical direction. The two feeding cylinders 123 are distributed along the length direction of the pushing table 122. The feeding cylinders 123 are vertically arranged. The cylinder body of the feeding cylinder 123 is fixedly arranged on the storage table 11, and the piston rod of the feeding cylinder 123 is fixedly connected to the pushing table 122. The plurality of guiding plates 121 are distributed along the length direction of the pushing table 122. The guiding plates 121 are rotatably connected to the pushing table 122 along the length direction of the pushing table 122. A plurality of through holes 14 are formed in the storage table 11. The through holes 14 penetrate through the baffle 13. The plurality of through holes 14 correspond to the plurality of guiding plates 121. The through holes 14 are for the guiding plates 121 to move. A torsion spring 124 is further arranged on the guiding plate 121. The torsion spring 124 is coaxial with the rotation axis of the guiding plate 121. One end of the torsion spring 124 is fixedly arranged on the guiding plate 121, and the other end of the torsion spring 124 is fixedly arranged on the pushing plate. The height of the guiding plate 121 gradually decreases in the direction from the storage table 11 to the cutting component 2.

[0036] Refer to Figure 3 and Figure 4, the cutting assembly 2 includes a cutting frame 21, a moving table 22, a cutting table 23, a cutting cylinder 24, a cutting motor 25, a cutting saw blade 26, a linear motor 27, a pressing member 28 and a pushing member 29. The cutting frame 21 includes a placement frame 211 and a positioning plate 212. The placement frame 211 is located on one side of the storage table 11. The cross-section of the placement frame 211 is Y-shaped. The positioning plate 212 is arranged vertically and is fixedly arranged on the upper end surface of the placement frame 211. The moving table 22 is slidably connected to the placement frame 211 along the length direction of the placement frame 211. The linear motor 27 is fixedly arranged on the cutting frame 21. The length direction of the linear motor 27 is parallel to the moving direction of the moving table 22. The output end of the linear motor 27 is fixedly connected to the moving table 22. The cutting table 23 is slidably connected to the moving table 22 in the vertical direction. The cylinder block of the cutting cylinder 24 is fixedly arranged on the moving table 22. The piston rod of the cutting cylinder 24 is fixedly connected to the cutting table 23. The cutting motor 25 is vertically and fixedly arranged on the cutting table 23. The axis of the cutting saw blade 26 is parallel to the length direction of the cutting frame 21. The cutting saw blade 26 is rotatably connected to the cutting table 23. A first bevel gear 231 and a second bevel gear 232 are arranged on the cutting table 23. The first bevel gear 231 is fixedly arranged on the output shaft of the cutting motor 25. The second bevel gear 232 is fixedly arranged on the rotation axis of the cutting saw blade 26. The first bevel gear 231 meshes with the second bevel gear 232. A guide plate 213 is also arranged on the placement frame 211. The guide plate 213 is arranged obliquely. The height of the guide plate 213 gradually decreases along the direction from the cutting frame 21 to the drilling assembly 3. The guide plate 213 is used to send the cut short material into the drilling assembly 3.

[0037] Referring to Figure 3 and Figure 4 , the pressing member 28 includes two pressing rollers 281, a pressing seat 282, four pressing springs 283 and four sliding rods 284. The pressing seat 282 is slidably connected to the cutting table 23 in the vertical direction. The length direction of the pressing rollers 281 is parallel to the length direction of the cutting frame 21. The two pressing rollers 281 are respectively located on both sides of the blank on the cutting frame 21. The pressing rollers 281 are rotatably connected to the pressing seat 282. The sliding rods 284 are arranged vertically. One end of the sliding rod 284 is fixedly arranged on the pressing seat 282. The other end of the sliding rod 284 passes through the cutting table 23. The four pressing springs 283 correspond to the four sliding rods 284. The pressing springs 283 are arranged vertically. The pressing springs 283 are sleeved on the sliding rods 284. One end of the pressing spring 283 is fixedly arranged on the pressing seat 282. The other end of the pressing spring 283 is fixedly arranged on the cutting table 23.

[0038] Referring to Figure 3 and Figure 5, the driving member 29 includes a mounting block 291, a plurality of rollers 292, a plurality of synchronous gears 293, a synchronous belt 294 and a synchronous motor 295. A placement cavity 214 is formed in the placement rack 211. The mounting block 291 is slidably connected to the placement cavity 214 in the vertical direction. The plurality of rollers 292 are distributed along the length direction of the placement rack 211. The rollers 292 are rotatably connected to the mounting block 291. The rollers 292 are V-groove rollers. The plurality of synchronous gears 293 correspond to the plurality of rollers 292 one by one. The synchronous gears 293 are coaxially arranged with the rollers 292. The synchronous gears 293 are fixedly arranged on one side of the rollers 292. The synchronous belt 294 is sleeved on the plurality of synchronous gears 293. The synchronous motor 295 is fixedly arranged on the placement rack 211. The synchronous motor 295 is used to drive one of the synchronous gears 293 to rotate.

[0039] Referring to Figure 4 and Figure 5 , a plurality of sliding grooves 215 are formed in the inner top wall of the placement cavity 214. The plurality of sliding grooves 215 correspond to the plurality of rollers 292. The sliding grooves 215 penetrate through the upper end surface of the placement rack 211. The sliding grooves 215 are for the rollers 292 to abut against the blank and separate the blank from the placement rack 211. A driving member 5 for driving the mounting block 291 to move is further arranged in the placement cavity 214. The driving member 5 includes a bidirectional screw 51, a driving motor 52, two connecting rods 53 and two connecting blocks 54. The two connecting blocks 54 are slidably connected to the placement cavity 214 in the length direction of the placement rack 211. The length direction of the bidirectional screw 51 is parallel to the length direction of the placement rack 211. The bidirectional screw 51 is rotatably connected to the placement cavity 214. The two connecting blocks 54 are respectively threadedly connected to the thread sections with opposite rotation directions of the bidirectional screw 51. The driving motor 52 is fixedly arranged on the placement rack 211. The output shaft of the driving motor 52 is fixedly connected to one end of the bidirectional screw 51. The two connecting rods 53 respectively correspond to the two connecting blocks 54. One end of the connecting rod 53 is rotatably connected to the connecting block 54. The other end of the connecting rod 53 is rotatably connected to the mounting block 291.

[0040] Referring to Figure 1 and Figure 6, the drilling assembly 3 includes a receiving platform 31, a first abutting plate 32, an abutting cylinder 33, a second abutting plate 34, a drill bit 35, a drilling motor 36 and a driving member 37. The receiving platform 31 is located on the side of the placement rack 211 away from the storage assembly 1. The first abutting plate 32 is vertically arranged and fixedly provided on the receiving platform 31. The second abutting plate 34 is vertically arranged and slidably connected to the receiving platform 31 along the length direction of the receiving platform 31. The cylinder body of the abutting cylinder 33 is fixedly provided on the receiving platform 31, and the piston rod of the abutting cylinder 33 is fixedly provided on the second abutting plate 34. The first abutting plate 32 and the second abutting plate 34 are respectively used for abutting against both ends of the short material. The driving member 37 includes a driving frame 371, a driving motor 372 and a driving screw 373. The driving frame 371 is slidably connected to the receiving platform 31 along the length direction of the receiving platform 31. The driving motor 372 is located on the side of the first abutting plate 32 away from the second abutting plate 34. The length direction of the driving screw 373 is parallel to the sliding direction of the driving frame 371. The driving screw 373 is rotatably connected to the receiving platform 31, and the driving frame 371 is threadedly connected to the driving screw 373. The driving motor 372 is fixedly provided on the receiving platform 31, and the output shaft of the driving motor 372 is fixedly connected to one end of the driving screw 373. The drilling motor 36 is fixedly provided on the driving frame 371. The length direction of the drill bit 35 is parallel to the length direction of the short material, and the drill bit 35 is fixedly provided on the output shaft of the drilling motor 36. A first avoidance hole 321 for avoiding the drill bit 35 is formed on the first abutting plate 32, and a second avoidance hole 341 for avoiding the drill bit 35 is formed on the second abutting plate 34.

[0041] Referring to Figure 6 and Figure 7 , a blanking member 6 is arranged on the receiving platform 31. The blanking member 6 includes two rotating plates 61, two worm gears 62, two worm wheels 63 and a blanking motor 64. The two rotating plates 61 are rotatably connected to the receiving platform 31 along the length direction of the short material. When the two rotating plates 61 abut against each other, the two rotating plates 61 form a V shape. The two worm wheels 63 correspond to the two rotating plates 61. The axis of the worm wheel 63 is parallel to the rotation axis of the rotating plate 61, and the worm wheel 63 is fixedly provided on the rotation axis of the rotating plate 61. The two worm gears 62 correspond to the two worm wheels 63. The length direction of the worm gear 62 is parallel to the width direction of the receiving platform 31. The worm gear 62 is rotatably connected to the receiving platform 31. The rotation directions of the two worm gears 62 are opposite, and the two worm gears 62 are connected. The blanking motor 64 is fixedly provided on the receiving platform 31, and the output shaft of the blanking motor 64 is fixedly connected to one of the worm gears 62.

[0042] Referring to Figure 1 and Figure 8, the transfer assembly 4 includes a transfer rack 41, two transfer rollers 42, a transfer motor 43 and a transfer belt 44. The transfer rack is located directly below the receiving table 31. The two transfer rollers 42 are distributed along the length direction of the transfer rack. The transfer rollers 42 are rotatably connected to the transfer rack. The transfer rollers 42 are V-groove rollers. The transfer belt 44 is sleeved on the transfer rollers 42. The transfer motor 43 is fixedly arranged on the transfer rack 41. The output shaft of the transfer motor 43 is fixedly connected to one of the transfer rollers 42. Through holes 441 for the short material punching debris to fall through are formed in the transfer belt 44. A sliding groove 45 is formed in the side wall of the transfer rack. A receiving box 46 is slidably connected in the sliding groove 45. The receiving box 46 is used for receiving the debris falling from the through holes 441.

[0043] The implementation principle of an equipment for seamless steel pipe punching in an embodiment of the present application is as follows: The storage assembly 1 is used for storing the blanks of seamless steel pipes. The blank on the storage table 11 is transported to the cutting frame 21 through the feeding member 12. Through the pushing member 29, one end of the blank abuts against the positioning plate 212. The blank is cut off by the cutting saw blade 26 to form short materials. The short materials enter the drilling assembly 3 under the action of the guiding plate 213. Through the action of the abutting cylinder 33, the first abutting plate 32 and the second abutting plate 34 abut against both ends of the short material. The driving member 37 drives the drilling motor 36 to move. The drilling motor 36 drives the drill bit 35 to drill the short material. The short material after drilling falls onto the transfer assembly 4 through the blanking member 6. The debris on the short material enters the receiving box 46 through the through holes 441. The short material is transported to the equipment of the subsequent hot rolling process through the transfer belt 44.

[0044] An embodiment of the present application also discloses a hot rolling production method, including the following process steps: S1: Cut short materials and drill holes. Cut and drill the blanks through the above-mentioned equipment for seamless steel pipe punching, so as to remove the center crack of the blanks and reduce the rolling load; S2: Heat the short materials to make the steel pipes soft and easy to shape; S3: Oblique rolling and reducing diameter, gradually thinning the wall thickness of the shell pipe to form a rough pipe; S4: Cold drawing, stretching the rough pipe at room temperature to further reduce the outer diameter and wall thickness; S5: Finishing process, performing steps such as deburring, straightening, pickling, and cold treatment on the seamless steel pipes; S6: Inspection and warehousing.

[0045] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An apparatus for drilling holes in seamless steel pipes, characterized in that: It includes a storage component (1) for storing blanks, a cutting component (2), a drilling component (3), and a transfer component (4). The cutting component (2) is used to cut the blanks into short materials. The drilling component (3) includes a receiving table (31) for receiving the short materials, a first abutting plate (32), an abutting cylinder (33), a second abutting plate (34), a drill bit (35), a drilling motor (36), and a driving member (37). The first abutting plate (32) is arranged on the receiving table (31). The second abutting plate (34) is slidably connected to the receiving table (31). The abutting cylinder (33) is used to drive the second abutting plate (34) to move so that the first abutting plate (32) and the second abutting plate (34) respectively abut against both ends of the short material. The drilling motor (36) is slidably connected to the receiving table (31) along the sliding direction of the second abutting plate (34). The drill bit (35) is arranged on the drilling motor (36). The driving member (37) is used to drive the drilling motor (36) to move. The transfer component (4) is used to transport the drilled short materials to the subsequent hot rolling process.

2. The device for drilling seamless steel pipes according to claim 1, characterized in that: A blank dropping member (6) is arranged on the receiving table (31). The blank dropping member (6) includes two rotating plates (61), two worm gears (62), two worm wheels (63), and a blank dropping motor (64). The two rotating plates (61) are rotatably connected to the receiving table (31) along the length direction of the short material. When the side walls of the two rotating plates (61) abut against each other, the two rotating plates (61) form a V shape. The two worm wheels (63) correspond to the two rotating plates (61). The worm wheel (63) is arranged on the rotating plate (61). The two worm gears (62) correspond to the two worm wheels (63). The worm gear (62) is rotatably connected to the receiving table (31). The worm gear (62) meshes with the worm wheel (63). The spiral directions of the two worm gears (62) are opposite. The blank dropping motor (64) is used to drive the two worm gears (62) to rotate simultaneously. The transfer component (4) is located directly below the receiving table (31).

3. The device for punching seamless steel pipes according to claim 1, characterized in that: The storage component (1) includes a storage table (11) and a feeding member (12). A blocking plate (13) for restricting the blank from separating is arranged on the storage table (11). The feeding member (12) includes a guiding plate (121), a pushing table (122), and a feeding cylinder (123). The pushing table (122) is slidably connected to the storage table (11) in the vertical direction. The feeding cylinder (123) is used to drive the pushing table (122) to move. The guiding plate (121) is arranged on the pushing table (122). The height of the guiding plate (121) gradually decreases along the direction from the storage table (11) to the cutting component (2). A through hole (14) for the guiding plate (121) to move is formed on the storage table (11).

4. The device for punching seamless steel pipes according to claim 3, wherein: The pushing table (122) is located on the side of the blocking plate (13) away from the storage table (11). The through hole (14) penetrates the blocking plate (13). The storage table (11) is rotatably connected to the pushing table (122) via the guiding plate (121). A torsion spring (124) for maintaining the tilt angle of the guiding plate (121) is also provided on the pushing table (122).

5. The device for drilling seamless steel pipes according to claim 1, characterized in that: The cutting assembly (2) includes a cutting frame (21), a moving table (22), a cutting table (23), a cutting cylinder (24), a cutting motor (25), a cutting saw blade (26), a linear motor (27), a pressing member (28), and a pushing member (29). The cutting frame (21) includes a placement frame (211) and a positioning plate (212). The positioning plate (212) is provided on the placement frame (211). The cross-section of the placement frame (211) is Y-shaped. The moving table (22) is slidably connected to the cutting frame (21) along the length direction of the blank. The cutting table (23) is slidably connected to the moving table (22) in the vertical direction. The cylinder block of the cutting cylinder (24) is provided on the moving table (22), and the piston rod of the cutting cylinder (24) is provided on the cutting table (23). The cutting motor (25) is provided on the cutting table (23), and the cutting saw blade (26) is provided on the cutting motor (25). The pressing member (28) is used to press the blank against the placement frame (211), and the pushing member (29) is used to keep one end of the blank in contact with the positioning plate (212). A guiding plate (213) for introducing the cut short material into the drilling assembly (3) is provided on the placement frame (211).

6. The device for punching seamless steel pipes according to claim 5, wherein: The pressing member (28) includes two pressing rollers (281), a pressing seat (282), and a pressing spring (283). The pressing seat (282) is slidably connected to the cutting table (23) in the vertical direction. The length direction of the pressing rollers (281) is parallel to the length direction of the blank. The pressing rollers (281) are rotatably connected to the pressing seat (282). The two pressing rollers (281) are respectively located on both sides of the axis of the blank. The pressing spring (283) is used to keep the pressing seat (282) away from the cutting table (23).

7. The device for punching seamless steel pipes according to claim 5, characterized in that: The pushing member (29) includes a mounting block (291), a plurality of rollers (292), a plurality of synchronous gears (293), a synchronous belt (294), and a synchronous motor (295). The mounting block (291) is provided on the placement frame (211). The plurality of rollers (292) are distributed along the length direction of the blank. The rollers (292) are rotatably connected to the mounting block (291). The plurality of synchronous gears (293) correspond to the plurality of rollers (292) one by one. The synchronous gears (293) are provided on the rollers (292). The synchronous belt (294) is sleeved on the synchronous gears (293). The synchronous motor (295) is used to drive one of the synchronous gears (293) to rotate.

8. The device for punching seamless steel pipes according to claim 5, characterized in that: A sliding groove (215) for the roller (292) to disengage from the blank is formed on the placement rack (211). A driving member (5) for driving the mounting block (291) to approach or move away from the blank is further provided on the placement rack (211). The driving member (5) includes a bidirectional screw (51), a driving motor (52), two connecting rods (53), and two connecting blocks (54). The two connecting blocks (54) are slidably connected to the placement rack (211) in a direction of approaching or moving away from each other. The length of the bidirectional screw (51) is parallel to the sliding direction of the connecting block (54). The bidirectional screw (51) is rotatably connected to the placement rack (211). The two connecting blocks (54) are respectively threadedly connected to opposite ends of the bidirectional screw (51) with opposite thread directions. The driving motor (52) is used to drive the bidirectional screw (51) to rotate. The two connecting rods (53) correspond to the two connecting blocks (54). One end of the connecting rod (53) is rotatably connected to the connecting block (54), and the other end of the connecting rod (53) is rotatably connected to the mounting block (291).

9. The device for drilling seamless steel pipes according to claim 1, characterized in that: The transfer assembly (4) includes a transfer rack (41), two transfer rollers (42), a transfer motor (43), and a transfer belt (44). The transfer rack (41) is located directly below the drilling assembly (3). The two transfer rollers (42) are distributed along the length direction of the short material. The transfer rollers (42) are rotatably connected to the transfer rack (41). The transfer belt (44) is sleeved on the transfer rollers (42). The transfer motor (43) is used to drive one of the transfer rollers (42) to rotate. A through hole (441) for debris to fall during drilling of the short material is formed in the transfer belt (44).

10. A hot rolling production method, characterized in that: It includes the following process steps: S1: Cut the short material and drill holes. Use a device for punching seamless steel pipes according to any one of claims 1-9 to cut and drill the blank, thereby removing the central crack of the blank and reducing the rolling load; S2: Heat the short material to soften the steel pipe and make it easy to shape; S3: Oblique rolling and reducing diameter, gradually thinning the wall thickness of the mandrel to form a rough pipe; S4: Cold drawing, stretching the rough pipe at room temperature to further reduce the outer diameter and wall thickness; S5: Finishing process, perform steps such as deburring, straightening, pickling, and cold treatment on the seamless steel pipe; S6: Inspect and store in the warehouse.

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