A seamless steel pipe end cutting device

Abstract

The present invention belongs to the technical field of seamless steel pipe production, and specifically relates to a seamless steel pipe end cutting device, which includes a cabinet body. A working panel is fixedly connected to the cabinet body. One end of the working panel is fixedly connected to a bracket, and a fixed shaft seat is fixedly connected to the bracket. A spline sleeve is rotatably connected inside the fixed shaft seat. An active shaft seat is slidably arranged on the working panel. A main shaft is rotatably and slidably connected inside the active shaft seat. A saw blade mandrel is fixedly connected to the end of the main shaft, and a pressure plate is fixedly connected to the end of the saw blade mandrel. A cutting cover box is arranged below the spline sleeve. A collection box is fixedly connected inside the cabinet body at a position below the cutting cover box. The bottom end of the cutting cover box passes through the working panel and extends into the collection box. A storage box for storing saw blades is fixedly connected to the bottom of the cabinet body. This patent can automatically replace the saw blade, save the time wasted by manual saw blade replacement, improve the production and processing efficiency of seamless steel pipes, and the structure and operation of replacing the saw blade are simple, with low debugging and calibration difficulty, convenient use and low failure rate.

Description

Technical Field

[0001] The present invention belongs to the technical field of seamless steel pipe production, and particularly relates to a seamless steel pipe end cutting device. Background Art

[0002] Seamless steel pipe is a hollow long steel bar, usually made of materials such as carbon steel, stainless steel, alloy steel, etc. Due to its excellent properties such as high strength, corrosion resistance, and high temperature resistance, it is widely used in fields such as petroleum, chemical industry, electric power, construction, and machinery manufacturing. The production process of seamless steel pipe mainly includes hot rolling and cold rolling. Among them, cold-rolled precision seamless steel pipe has high dimensional accuracy and good surface finish, and can meet the requirements of fields such as precision mechanical structure, hydraulic equipment, or steel bar sleeves.

[0003] When cold-rolling seamless steel pipe, multi-pass rolling is carried out through a continuous rolling mill to gradually make the outer diameter and wall thickness of the steel pipe meet the requirements. During this process, a traction head needs to be reserved at the end of the steel pipe to facilitate the traction of the seamless steel pipe through the rolling mill. Moreover, after the seamless steel pipe is cold-rolled, the flatness and thickness of the end part of the steel pipe far from the traction head cannot achieve high processing accuracy. Therefore, after the cold-rolling processing of the seamless steel pipe, it is necessary to cut off the traction heads at both ends of the steel pipe and the parts that do not meet the quality accuracy requirements.

[0004] In the existing seamless steel pipe processing scenarios, manufacturers usually use a band saw cutting machine or a saw blade cutting machine to cut the end of the steel pipe. Among them, the saw blade cutting machine is widely used because of its simple structure and convenient use. However, due to the high strength of the seamless steel pipe, the saw blade is severely worn during cutting. And to ensure good accuracy and quality after cutting at the end of the seamless steel pipe, it is necessary to ensure that the saw blade is in good condition. Therefore, during the large-scale continuous cutting process of seamless steel pipes, the saw blade needs to be frequently replaced to ensure good processing quality of the seamless steel pipe. And the existing method of replacing the saw blade is mostly manual. By manually removing the fixing nut and chuck on the main shaft of the abrasive wheel saw blade and replacing the old saw blade with a new one, this method has low replacement efficiency, and the frequent replacement of the saw blade increases the labor intensity of workers, and manual replacement wastes a lot of time, reducing the overall production efficiency of seamless steel pipes. Therefore, a cutting machine that can automatically and efficiently replace the saw blade is needed.

[0005] As disclosed in Chinese Patent No. CN118024114A, a saw blade automatic replacement system is disclosed, including a ground rail assembly. An unloading and loading assembly is arranged on the ground rail assembly, and the unloading and loading assembly can move horizontally left and right on the ground rail assembly. A grinding wheel saw is arranged on the front side of the ground rail assembly, and a robot handling assembly is arranged on the rear side of the ground rail assembly. A saw blade storage rack and an old saw blade storage mechanism are arranged outside the robot handling assembly. The automatic replacement of the saw blade is realized through the action of the robot handling assembly to improve the efficiency of saw blade replacement, reduce the labor intensity of workers and labor costs.

[0006] However, the above patent replaces the saw blade with a flexible robotic arm instead of manual replacement, which will bring about the problem of complex structure of the cutting equipment, resulting in high production and use costs of the cutting equipment. The high cost will reduce the manufacturer's profit and is not conducive to the manufacturer's competition in the market.

[0007] Moreover, the complex replacement structure and complex replacement actions of the above patent require complex and precise control. Then the above patent needs cumbersome debugging, calibration and testing to operate normally, which increases the difficulty of using the equipment. And the complex and precise control often has poor working stability. Even a small error will cause the equipment to malfunction and affect normal use.

[0008] Meanwhile, during the cutting process of seamless steel pipes, a large amount of cutting debris will be generated, causing the debris to fly. This not only easily injures the operator, but also is inconvenient to clean up.

[0009] For example, the Chinese patent with the publication number CN220259691U discloses a seamless steel pipe end cutting device, which includes a cutting table. A placement seat and a mounting frame are installed at the top of the cutting table. The placement seat is located in the middle of the mounting frame. A pressing mechanism is installed at the top rear side of the placement seat. A hydraulic cylinder 1 is installed at the top of the mounting frame. The output shaft of the hydraulic cylinder 1 extends through the mounting frame and is installed with a steel pipe cutting machine. A vacuum cleaner is installed at both ends of the placement seat; a splash-proof frame is installed at the outer end of the steel pipe cutting machine. The seamless steel pipe end cutting device drives the splash-proof frame and the steel pipe cutting machine to move downward through the hydraulic cylinder 1, so that the front end of the splash-proof frame blocks the front end of the steel pipe end, and is pressed against the steel pipe through an arc-shaped slider. Then, the steel pipe cutting machine is driven to move downward by the hydraulic cylinder to cut the steel pipe, and then the debris is absorbed by the vacuum cleaner.

[0010] However, during the cutting process of the above patent, the splash-proof frame still cannot completely cover the cutting position, and a small amount of debris still splashes unrestrictedly. Moreover, the above patent cannot reduce the temperature of the saw blade during cutting, resulting in a large degree of wear of the saw blade and a high frequency of saw blade replacement. Summary of the Invention

[0011] The invention overcomes the deficiencies of the prior art and solves the technical problem of making the movable shaft seat slide on the slide rail and guiding the movable shaft seat by the guide groove so that the movable shaft seat can automatically change its position during the lateral sliding process, thereby realizing the function of automatically replacing the saw blade, saving the time wasted in manually replacing the saw blade, improving the production and processing efficiency of seamless steel pipes, saving manpower costs and reducing the labor intensity of workers, and simplifying the structure and action of replacing the saw blade, thereby reducing the production and use costs of the equipment, and simplifying the action of replacing the saw blade, thereby reducing the difficulty of debugging and calibration. The invention is easy to use and has a low failure rate, which is convenient for manufacturers to use and control production costs, thereby improving the market competitiveness of manufacturers. By setting a cutting cover box, the cutting processing position can be effectively covered to avoid metal debris generated during the cutting process from splashing everywhere, and by setting a nozzle, the cutting processing position can be effectively cooled and cooled, the wear of the saw blade is reduced, thereby reducing the replacement frequency of the saw blade, reducing the use cost and improving the processing efficiency, and the water sprayed from the nozzle can suppress the splashing of debris.

[0012] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a seamless steel pipe end cutting device, comprising:

[0013] A cabinet, wherein a working panel is fixedly connected to the cabinet, one end of the working panel is fixedly connected to a bracket, a fixed shaft seat is fixedly connected to the bracket, a spline sleeve is rotatably connected in the fixed shaft seat, and a driving motor drivingly connected to the spline sleeve is fixedly connected to the bracket;

[0014] A movable shaft seat, the working panel is slidably provided with a movable shaft seat, a main shaft is rotatably and slidably connected in the movable shaft seat, a saw blade core rod is fixedly connected to the end of the main shaft, and a pressure plate is fixedly connected to the end of the saw blade core rod;

[0015] A cutting cover box is provided below the spline sleeve, a feed port is provided on the cutting cover box, a collecting box is fixedly connected below the cutting cover box in the cabinet, and nozzles are fixedly connected at both sides of the upper end of the cutting cover box;

[0016] Among them, the bottom end of the cutting cover box passes through the working panel and extends into the collection box, the saw blade is clamped and fixed between the pressure plate and the spline sleeve, and a storage box for storing saw blades is fixedly connected to the bottom of the cabinet, and the saw blade core rod can pass through the center hole of the saw blade.

[0017] Furthermore, the working panel is respectively fixedly connected to two slide rails at both sides of the movable shaft seat, each of the slide rails is slidably connected to a slider, the two sides of the end of the movable shaft seat away from the bracket are rotatably connected to the two sliders, and the bottom side of the working panel is respectively fixedly connected to two guide rail plates at both sides of the movable shaft seat, each of the guide rail plates is provided with a guide groove, and the two sides of the bottom of the movable shaft seat close to the bracket are respectively slidably connected to the two guide grooves.

[0018] Further, a movable shaft seat allowing the movable shaft seat to pass through is fixedly connected to the working panel away from the bracket, and an inclined chute box is fixedly connected to one end of the cabinet away from the bracket.

[0019] Further, a set of lead screw seats are fixedly connected to both ends of each slide rail on the working panel. A lead screw is rotatably connected between each set of lead screw seats. The end of each lead screw is drivingly connected to a lead screw motor fixedly connected to the lead screw seat. A cylinder is fixedly connected to the movable shaft seat below the main shaft. The extending end of the cylinder passes through the movable shaft seat and is fixedly connected to a clamping block, and the clamping block is rotatably connected to the main shaft.

[0020] Further, a pressure sensor is fixedly connected between the clamping block and the extending end of the cylinder. A set of travel switches are fixedly connected to one side of each slide rail on the upper part, and each travel switch is located at the designated start-stop position of the slider.

[0021] Further, the storage bin is inclined. A support rod is fixedly connected to the center of the bottom of the storage bin. A set of saw blades are evenly sleeved on the support rod. A cushion block made of a light material is arranged between each saw blade. A plurality of elastic pieces are fixedly connected to the outer side of the saw blade mandrel evenly.

[0022] Further, a plurality of spline grooves are evenly formed on the outer side of the saw blade mandrel. Each spline groove can accommodate the corresponding support rod to pass through. Teeth are arranged at the position between every two spline grooves at the end of the saw blade mandrel away from the pressure plate. Splines are arranged at the corresponding positions of each spline groove on the inner wall of the spline sleeve. The diameter of the end of the saw blade mandrel provided with teeth is smaller than the diameter of the end of the saw blade mandrel close to the pressure plate.

[0023] Further, a plurality of installation grooves are evenly formed at the end of the saw blade mandrel close to the pressure plate. A centering clamping block is slidably connected in each installation groove. A ejector rod is slidably connected to the axis of the saw blade mandrel. The tip of the ejector rod abuts against the inclined surface of each centering clamping block. The ejector plug is made of a soft elastic material and is frustum-shaped.

[0024] Further, two second electric push rods are respectively fixedly connected to both sides of the collection box at the bottom of the working panel. The extending end of each second electric push rod passes through the working panel and is fixedly connected to the cutting cover box. Two symmetric clamping blocks are slidably connected in the cutting cover box. Avoidance grooves are formed on the clamping blocks and the cutting cover box at the corresponding positions of the saw blades. Two first electric push rods are respectively fixedly connected to both sides of the cutting cover box. The extending end of each first electric push rod extends into the cutting cover box and is fixedly connected to the corresponding clamping block.

[0025] Further, a sewage valve penetrating through the cabinet body is fixedly connected to the bottom of the collection box. A water tank is fixedly connected inside the cabinet body on one side of the collection box. Water pumps are fixedly connected to both sides of the water tank respectively. Each water pump is connected to the corresponding nozzle through a hose.

[0026] In summary, compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] By making the movable shaft seat slide on the slide rail and guiding the movable shaft seat by using the guide groove, the movable shaft seat can automatically change its position during the transverse sliding process, thereby realizing the function of automatically replacing the saw blade, saving the time wasted by manual saw blade replacement, improving the production and processing efficiency of seamless steel pipes, saving labor costs and reducing the labor intensity of workers.

[0028] The structure and operation of replacing the saw blade are simple, reducing the production and use costs of the equipment, and simplifying the operation of replacing the saw blade, thereby reducing the debugging and calibration difficulty. It is convenient to use and has a low failure rate, facilitating the manufacturer to use and control the production cost, and thus improving the market competitiveness of the manufacturer.

[0029] By providing the cutting cover box, the cutting and processing position can be effectively covered to prevent metal chips generated during the cutting process from splashing everywhere. And by providing the nozzles, the cutting and processing position can be effectively cooled and cooled down, reducing the wear of the saw blade and thus reducing the replacement frequency of the saw blade, reducing the use cost and improving the processing efficiency. Moreover, the water sprayed from the nozzles can play a role in suppressing the splashing of chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional schematic diagram of this patent.

[0031] Figure 2 It is a rear view of this patent.

[0032] Figure 3 is Figure 2 a three-dimensional cross-sectional view at A-A in

[0033] Figure 4 is Figure 3 a partial enlarged view at B in

[0034] Figure 5 It is a structural schematic diagram of the spline sleeve and the saw blade mandrel.

[0035] Figure 6 It is a structural schematic diagram of the saw blade mandrel.

[0036] Figure 7 It is a structural schematic diagram of this patent during the blanking operation.

[0037] Figure 8 It is a structural schematic diagram during the material taking operation.

[0038] Figure 9 is Figure 8 The partial enlarged view at position C in

[0039] Figure 10 The structural schematic diagram of the storage bin when the material taking action of this patent is performed.

[0040] Figure 11 The structural schematic diagram of the cutting cover box of this patent.

[0041] Explanation of reference numerals in the drawings: cabinet body 10; working panel 11; movable shaft seat 12; main shaft 13; clamping block 14; pressure sensor 15; air cylinder 16; pressing disc 17; saw blade mandrel 18; elastic piece 19; tooth 20; centering clamping block 21; ejector rod 22; ejector plug 23; spline groove 24; spline sleeve 25; spline 26; fixed shaft seat 27; protective cover 28; drive motor 29; bracket 30; lead screw seat 31; lead screw 32; lead screw motor 33; slide rail 34; installation groove 35; slider 36; guide rail plate 37; guide groove 38; inclined groove box 39; travel switch 40; storage bin 41; support rod 42; cushion block 43; saw blade 44; blanking cover plate 45; cutting cover box 46; feed inlet 47; clamping block 48; avoidance groove 49; first electric drive rod 50; second electric drive rod 51; collection box 52; sewage discharge valve 53; water tank 54; water pump 55; nozzle 56; hose 57. Detailed implementation manners

[0042] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Embodiment

[0043] As Figures 1-11 shown, a seamless steel pipe end cutting device includes a cabinet body 10, a working panel 11 is fixedly connected to the cabinet body 10, two slide rails 34 are symmetrically and fixedly connected to the working panel 11, a slider 36 is slidably connected to each slide rail 34, a movable shaft seat 12 is rotatably connected between the two sliders 36, two guide rail plates 37 are fixedly connected to both sides of the movable shaft seat 12 at the bottom of the working panel 11, a guide groove 38 is opened on each guide rail plate 37, both sides of the bottom end of the movable shaft seat 12 are respectively slidably connected to the two guide grooves 38, the top of the movable shaft seat 12 is slidably and rotatably connected to a main shaft 13, a saw blade mandrel 18 is fixedly connected to the end of the main shaft 13, a saw blade mandrel 18 is fixedly connected to the end of the saw blade mandrel 18, and four elastic pieces 19 are uniformly and fixedly connected to the outside of the saw blade mandrel 18.

[0044] At one end of the working panel 11, there is a fixedly connected support 30. On the support 30, there is a fixedly connected fixed shaft seat 27. On the side of the fixed shaft seat 27 close to the movable shaft seat 12, there is a protective cover 28 that covers the saw blade 44. Inside the fixed shaft seat 27, there is a spline sleeve 25 rotatably connected. On the support 30, there is a driving motor 29 fixedly connected. The power output end of the driving motor 29 is in transmission connection with the spline sleeve 25. The saw blade mandrel 18 can be inserted into the spline sleeve 25. Inside the cabinet body 10, there is an inclined material storage box 41 fixedly connected. Inside the material storage box 41, there is a support rod 42 fixedly connected. Outside the support rod 42, there are multiple saw blades 44 sleeved. Between each saw blade 44, there is a spacer 43 made of a lightweight material. In this embodiment, it is preferably made of polystyrene foam material. The saw blade mandrel 18 can pass through the central hole of the saw blade 44. Between the spline sleeve 25 and the pressure plate 17, the saw blade 44 can be clamped and fixed. At the position on the working panel 11 far from the support 30, there is a blanking cover plate 45 that allows the movable shaft seat 12 to pass through. At one end of the cabinet body 10 far from the support 30, there is an inclined chute box 39 fixedly connected.

[0045] By sliding the movable shaft seat 12 on the slide rail 34 and guiding the movable shaft seat 12 using the guiding groove 38, the movable shaft seat 12 can automatically change its position during the transverse movement, thereby realizing the function of automatically replacing the saw blade, saving the time wasted by manual saw blade replacement, improving the production and processing efficiency of seamless steel pipes, and saving labor costs and reducing the labor intensity of workers.

[0046] Moreover, the structure and operation of replacing the saw blade are simple, reducing the production and use costs of the equipment, facilitating the manufacturer to use and control the production costs, thereby improving the market competitiveness of the manufacturer. And by setting the spacer 43, each saw blade 44 can be separated, facilitating the operation of replacing the saw blade. And the spacer 43 is lightweight and does not affect the access of the saw blade 44. And the spacer 43 can be reused without causing waste.

[0047] As Figures 1-11 shown, on the side of the movable shaft seat 12 far from the support 30 and below the main shaft 13, there is a cylinder 16 fixedly connected. The extending end of the cylinder 16 passes through the movable shaft seat 12 and is fixedly connected with a clamping block 14. Between the clamping block 14 and the extending end of the cylinder 16, there is a pressure sensor 15 fixedly connected. The clamping block 14 is rotatably connected with the main shaft 13. On the working panel 11, at both ends of each slide rail 34, there is a set of lead screw seats 31 fixedly connected. Between each set of lead screw seats 31, there is a lead screw 32 rotatably connected. One end of each lead screw 32 extending out of the lead screw seat 31 is in transmission connection with a lead screw motor 33 fixedly connected with the lead screw seat 31. On the working panel 11, near each slide rail 34, there is a set of travel switches 40 for detecting the position of the slider 36 fixedly connected. Each travel switch 40 is located at the designated start-stop position of the slider 36.

[0048] By setting the lead screw 32 and the cylinder 16, the function of automatically replacing the saw blade can be realized only by using two sets of driving elements, which simplifies the operation of replacing the saw blade, thus reducing the production cost of the equipment. Moreover, the operation is simple. By using the pressure sensor 15 and the travel switch 40, the operation of replacing the saw blade can be accurately controlled, greatly reducing the difficulty of debugging and calibration, being convenient to use and having a low failure rate.

[0049] As Figures 1-11 shown, four spline grooves 24 staggered with the positions of the elastic pieces 19 are evenly distributed on the outer side of the saw blade mandrel 18. Inside the spline sleeve 25, splines 26 are fixedly arranged at the corresponding positions of each spline sleeve 25. Each spline groove 24 can allow the corresponding spline 26 and the support rod 42 to pass through. A hole groove allowing the support rod 42 to pass through is formed in the pressure plate 17. At the end of the saw blade mandrel 18 away from the pressure plate 17, teeth 20 are arranged between every two spline grooves 24. The diameter of the end of the saw blade mandrel 18 provided with the teeth 20 is smaller than the diameter of the central hole of the saw blade 44.

[0050] By setting the spline groove 24 and the teeth 20, when replacing the saw blade, the support rod 42 can be automatically guided to penetrate into the corresponding spline groove 24, so that the saw blade mandrel 18 is stably inserted into the central hole of the saw blade 44 arranged in the storage box 41, realizing the action of taking the saw blade. And the spline 26 can be automatically guided into the spline groove 24, so that the saw blade mandrel 18 is stably engaged with the pressure sensor 15, enabling the spline sleeve 25 to stably drive the saw blade to rotate for cutting work.

[0051] Moreover, by setting the diameter of the end of the saw blade mandrel 18 provided with the teeth 20 to be smaller than the diameter of the end of the saw blade mandrel 18 close to the pressure plate 17, the machining and assembly errors can be compensated, so that the saw blade mandrel 18 can be stably and accurately inserted into the central hole of the corresponding saw blade 44, further reducing the requirement of the equipment for the debugging and calibration accuracy, and then reducing the failure rate and the use difficulty.

[0052] As Figures 1-11 shown, a plurality of installation grooves 35 are evenly distributed in the circumferential direction at the end of the saw blade mandrel 18 close to the pressure plate 17. A centering clamp block 21 is slidably connected in each installation groove 35. A push rod 22 is slidably connected at the axis of the saw blade mandrel 18. The tip of the push rod 22 abuts against the inclined surface of each centering clamp block 21. One end of the push rod 22 away from the pressure plate 17 is fixedly connected with a plug 23. The plug 23 is made of a soft elastic material. In this embodiment, it is preferably made of rubber material. The plug 23 is in a frustum shape.

[0053] By setting the ejector rod 22, when the pressure plate 17 and the spline sleeve 25 clamp and fix the saw blade 44, the top plug 23 can be made to abut against the bottom of the spline sleeve 25, so that the ejector rod 22 exerts an extrusion force on the centering clamp block 21. Furthermore, the centering clamp block 21 can be synchronously extended to center and clamp the central hole of the saw blade 44, ensuring that the saw blade 44 and the spline sleeve 25 are in a coaxial state, and avoiding the eccentric shaking of the saw blade 44 during high-speed rotation, which affects the stability and service life of the equipment operation.

[0054] When using the top plug 23 made of rubber material, by utilizing the elastic deformation ability of the top plug 23, while not affecting the clamping of the saw blade 44 by the pressure plate 17 and the spline sleeve 25, a stable extrusion force is exerted on the centering clamp block 21. And the top plug 23 is arranged in a frustum shape, reserving the deformation amount of the top plug 23 when being extruded, so as to avoid the top plug 23 being stuck due to limited deformation and being unable to exert a thrust force on the ejector rod 22.

[0055] As Figures 1-11 shown, a cutting cover box 46 is arranged on the working panel 11 below the spline sleeve 25. A feed port 47 is opened on the cutting cover box 46. Two second electric drive rods 51 are respectively and fixedly connected to both sides of the bottom of the working panel 11 where the cutting cover box 46 is located. The extending end of each second electric drive rod 51 passes through the working panel 11 and is fixedly connected to the cutting cover box 46. Two clamping blocks 48 are symmetrically and slidably connected in the cutting cover box 46. Avoidance grooves 49 are opened on the clamping blocks 48 and the cutting cover box 46 at positions corresponding to the saw blade 44. Two first electric drive rods 50 are respectively and fixedly connected to both sides of the cutting cover box 46. The extending end of each first electric drive rod 50 extends into the cutting cover box 46 and is fixedly connected to the corresponding clamping block 48.

[0056] By setting the cutting cover box 46, the cutting processing position can be effectively covered, avoiding the metal chips generated during the cutting process from flying everywhere.

[0057] As Figures 1-11 shown, two nozzles 56 are respectively and fixedly connected to both sides of the top of the cutting cover box 46. The water spraying end of each nozzle 56 points to the avoidance groove 49. Uniform through grooves are opened on the clamping blocks 48. A collection box 52 is fixedly connected to the cabinet 10 below the cutting cover box 46. The bottom end of the cutting cover box 46 passes through the working panel 11 and extends into the collection box 52. A sewage valve 53 passing through the cabinet 10 is fixedly connected to one side of the bottom of the collection box 52. A water tank 54 is fixedly connected to the cabinet 10 on one side of the collection box 52. Water pumps 55 are respectively and fixedly connected to both sides of the bottom of the water tank 54. Each water pump 55 is connected to the corresponding nozzle 56 through a hose 57.

[0058] By providing the nozzle 56, the cutting processing position can be effectively cooled, the wear of the saw blade can be reduced, and thus the replacement frequency of the saw blade can be reduced, thereby reducing the use cost and improving the processing efficiency. The water sprayed from the nozzle 56 can suppress the splashing of debris, so that the debris moves with the cooling water and flows into the collection box 52 for collection.

[0059] In this embodiment, initially, the operator connects the device to the power supply and control system. At this time, a saw blade 44 is connected to the outer shell of the saw blade core rod 18 and the saw blade core rod 18 is inserted into the spline sleeve 25. The cylinder 16 drives the pressure plate 17 through the hydraulic system to cooperate with the spline sleeve 25 to apply pressure to the saw blade 44 to ensure that the saw blade 44 is squeezed and clamped. The operator arranges the remaining saw blades 44 on the outside of the support rod 42, and places a pad 43 between every two saw blades 44. Sufficient cooling water is injected into the water tank 54 to complete the preparation work.

[0060] During the cutting process, the operator first starts the water pump 55 and the drive motor 29, and continuously pumps the cooling water in the water tank 54 into the nozzle 56 and sprays it out, while the drive motor 29 drives the spline sleeve 25 to rotate at high speed. The spline sleeve 25 and the saw blade core rod 18 are connected to the spline groove 24 through the spline 26, and the spline sleeve 25, the pressure plate 17, the saw blade core rod 18 and the clamped saw blade 44 rotate at high speed. The operator inserts the end of the seamless steel pipe into the feed port 47, and controls the two first electric drive levers 50 to extend outward through the control system, so that the two clamping blocks 48 clamp and fix the seamless steel pipe, and then controls the second electric drive lever 51 to extend outward to lift the cutting cover box 46 and the seamless steel pipe until the saw blade 44 gradually cuts off the end of the seamless steel pipe.

[0061] During the cutting process, the cutting cover box 46 and the clamp block 48 can effectively shield the cutting position, thereby preventing metal debris generated by cutting from splashing, and the water sprayed from the nozzle 56 can suppress the debris splashing, and the cooling water flushes and entrains the metal debris and finally flows into the collection box 52 for storage. In addition, the cooling water sprayed from the nozzle 56 can effectively cool the cutting position, reduce the wear of the saw blade, and thus reduce the replacement frequency of the saw blade, thereby improving production and processing efficiency.

[0062] After cutting, the control system controls each component to reset and wait for the next cutting process.

[0063] After a long period of cutting work, the saw blade 44 is inevitably worn out and needs to be replaced. Replacing the saw blade can be decomposed into a material dropping action, a material taking action and a material matching action.

[0064] When the saw blade needs to be replaced, the control system shuts down the drive motor 29 and no longer drives the spline sleeve 25 and the saw blade mandrel 18 to rotate. Subsequently, the control system no longer supplies liquid pressure to the cylinder 16, and controls the lead screw motor 33 to drive the lead screw 32 to rotate, thereby driving the slider 36 and the movable shaft seat 12 to move away from the spline sleeve 25. The saw blade mandrel 18 is gradually withdrawn from the spline sleeve 25. When the elastic piece 19 disengages from the spline sleeve 25, the compressed elastic piece 19 is no longer restricted and expands, so that it can catch the edge of the central hole of the saw blade 44, and the worn saw blade 44 moves together with the saw blade mandrel 18.

[0065] The movable shaft seat 12 drives the saw blade mandrel 18 and the worn saw blade 44 and finally moves to the end of the lead screw 32. The travel switch 40 at the end of the lead screw 32 detects the approach of the slider 36 and sends a signal to the control system to shut down the lead screw motor 33. At this time, the movable shaft seat 12 has passed under the blanking cover plate 45, and the blanking cover plate 45 pushes the worn saw blade 44 sleeved on the saw blade mandrel 18 off the saw blade mandrel 18 during the movement of the movable shaft seat 12. The worn blade falls into the chute box 39 to complete the blanking action.

[0066] After the blanking action is completed, the control system controls the lead screw motor 33 to rotate in the reverse direction, and the movable shaft seat 12 moves again in the direction close to the spline sleeve 25 to realize the return stroke. During the return stroke, the movable shaft seat 12 is still guided by the guide groove 38, so that the movable shaft seat 12 tilts at the corresponding position of the storage box 41, thereby making the main shaft 13 and the saw blade mandrel 18 point to the support rod 42 and coincide with the axis of the saw blade 44 stored in the storage box 41. Another set of travel switches 40 is provided at the corresponding position where the main shaft 13 and the saw blade mandrel 18 are in this state. When the travel switch 40 detects that the slider 36 moves to this position, it automatically determines that the saw blade mandrel 18 reaches the predetermined position for replacing the saw blade, and thus sends a signal to the control system to shut down the lead screw motor 33.

[0067] Subsequently, the control system drives the cylinder 16 to extend, which drives the main shaft 13 to slide in the movable shaft seat 12 and makes the saw blade mandrel 18 gradually insert into the central hole of the uppermost saw blade 44 in the storage box 41. During this process, the teeth 20 on the saw blade mandrel 18 first contact the tops of the four support rods 42, and as the saw blade mandrel 18 continues to advance, the saw blade mandrel 18 slides along the inclined surface of the teeth 20 until each support rod 42 is aligned with the corresponding spline groove 24, and the saw blade mandrel 18 continues to advance, and the support rod 42 passes through the spline groove 24 and finally passes through the hole groove of the pressure plate 17.

[0068] While the saw blade core rod 18 is being pushed forward, the saw blade core rod 18 is guided by the support rod 42 to accurately and smoothly penetrate into the center hole of the saw blade 44. Since the diameter of the end of the saw blade core rod 18 with the teeth 20 is smaller than the diameter of the center hole of the saw blade 44, the end of the saw blade core rod 18 can smoothly enter the center hole of the saw blade 44, thereby eliminating the influence of equipment processing and assembly accuracy on working stability and smoothness.

[0069] When the saw blade core rod 18 passes through the center hole of the saw blade 44, since the saw blades 44 are arranged at intervals with the pads 43, as the saw blade core rod 18 is advanced, the spring piece 19 is gradually squeezed and contracted by the edge of the center hole of the saw blade 44 and finally passes through the center hole of the saw blade 44. Then the control system controls the cylinder 16 to retract the spring piece 19, and the spring piece 19 is in an extended state, restricting the edge of the center hole of the saw blade 44, so that the saw blade core rod 18 drives the saw blade 44 to move up along the axis of the main shaft 13 to realize the material picking action.

[0070] When the material picking action is completed, the control system starts the screw motor 33 again, causing the movable shaft seat 12 to move toward the spline sleeve 25. During this process, the movable shaft seat 12 is guided by the guide groove 38 again, causing the movable shaft seat 12 to return to a vertical state, thereby allowing the saw blade core rod 18 to carry the saw blade 44 to remain coaxial with the spline sleeve 25 again.

[0071] Subsequently, the saw blade core rod 18 is gradually inserted into the spline sleeve 25 as the movable shaft seat 12 moves. The spline 26 first contacts the inclined surface of the tooth 20, so that the saw blade core rod 18 rotates along the inclined surface of the tooth 20 to automatically adjust its position, and then the spline 26 can smoothly enter the spline groove 24 so that the spline sleeve 25 and the saw blade core rod 18 are docked and spliced, and the spring piece 19 is compressed by the spline sleeve 25 again and retracted in the spline sleeve 25. At this time, the travel switch 40 near the bracket 30 detects that the slider 36 has reached the specified position and sends a signal to make the control system turn off the screw motor 33.

[0072] At the same time, the control system synchronously controls the cylinder 16 to extend outward and apply thrust, so that the pressure plate 17 cooperates with the spline sleeve 25 to clamp and fix the saw blade 44, and the pressure sensor 15 detects the pressure applied to the saw blade 44 in real time until the specified clamping force is reached, and then controls the cylinder 16 to maintain this pressure, and uses the friction between the saw blade 44 and the pressure plate 17 and the spline sleeve 25 to limit the rotation of the saw blade 44, so that the saw blade 44 can stably rotate at high speed with the spline sleeve 25 and the saw blade core rod 18, thereby completing the engagement action.

[0073] During the blanking operation, the bottom end of the movable shaft seat 12 is guided by the guide groove 38 during its sliding process. First, the movable shaft seat 12 is tilted at the storage box 41, and then gradually returns to the vertical position at the blanking cover plate 45 to facilitate the blanking cover plate 45 to push the worn saw blade down. During this process, the elastic piece 19 always restricts the worn saw blade 44 to ensure that the worn saw blade 44 remains on the saw blade mandrel 18 before reaching the inclined chute box 39, preventing the saw blade 44 from falling prematurely and affecting subsequent operations.

[0074] During the material taking operation, while the saw blade 44 rises with the saw blade mandrel 18, the saw blade 44 will drag and drop the blanking spacer 43. After dropping, the spacer 43 and the worn saw blade 44 fall into the inclined chute box 39 together and are collected by the operator. The lightweight spacer 43 will not affect the normal taking of the saw blade 44, and the spacer 43 can be reused.

[0075] During the alignment operation, when the saw blade mandrel 18 is inserted into the spline sleeve 25, the top plug 23 first abuts against the bottom of the spline sleeve 25, so that the tip of the ejector rod 22 exerts a squeezing force on the four centering clamping blocks 21, causing the four centering clamping blocks 21 to synchronously extend outward. Then the centering clamping blocks 21 perform centering clamping on the central hole of the saw blade 44, avoiding the problem of eccentric wobbling of the saw blade 44 during high-speed rotation due to the tolerance between the diameter of the saw blade mandrel 18 and the inner diameter of the central hole of the saw blade 44. Since the material of the top plug 23 is rubber, when the air cylinder 16 applies pressure, the top plug 23 is deformed under pressure. While providing a thrust to the ejector rod 22, it will not cause the pressure plate 17 to be unable to further push and clamp the saw blade 44, thus ensuring the clamping and fixing effect of the saw blade 44.

[0076] The above driving motor 29, lead screw motor 33, travel switch 40, sewage valve 53, water pump 55, etc. are mature existing technologies and will not be elaborated herein.

[0077] As certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As the term "comprising" mentioned throughout the specification and claims is an open-ended term, it should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0078] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the commodity or system comprising said element.

[0079] The above description shows and describes several preferred embodiments of the present application. However, as mentioned above, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the technology or knowledge in the relevant field. Any changes and variations made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A seamless steel pipe end cutting device, characterized in that, The seamless steel pipe end cutting equipment includes: A cabinet (10), a working panel (11) is fixedly connected to the cabinet (10), a bracket (30) is fixedly connected to one end of the working panel (11), a fixed shaft seat (27) is fixedly connected to the bracket (30), a spline sleeve (25) is rotatably connected in the fixed shaft seat (27), and a driving motor (29) drivingly connected to the spline sleeve (25) is fixedly connected to the bracket (30); A movable shaft seat (12), the movable shaft seat (12) is slidably arranged on the working panel (11), a main shaft (13) is rotatably and slidably connected in the movable shaft seat (12), a saw blade mandrel (18) is fixedly connected to the end of the main shaft (13), and a pressure plate (17) is fixedly connected to the end of the saw blade mandrel (18); A cutting cover box (46), the cutting cover box (46) is arranged below the spline sleeve (25), a feed inlet (47) is opened on the cutting cover box (46), a collection box (52) is fixedly connected to the cabinet (10) below the cutting cover box (46), and nozzles (56) are fixedly connected to both sides of the upper end of the cutting cover box (46); wherein, the bottom end of the cutting cover box (46) passes through the working panel (11) and extends into the collection box (52), a saw blade (44) is clamped and fixed between the pressure plate (17) and the spline sleeve (25), a storage box (41) for storing the saw blade (44) is fixedly connected to the bottom of the cabinet (10), and the saw blade mandrel (18) can pass through the central hole of the saw blade (44).

2. The seamless steel pipe end cutting equipment according to claim 1, characterized in that, Two slide rails (34) are respectively fixedly connected to both sides of the working panel (11) where the movable shaft seat (12) is located, a slider (36) is slidably connected to each slide rail (34), both sides of the end of the movable shaft seat (12) away from the bracket (30) are respectively rotatably connected to the two sliders (36), two guide rail plates (37) are respectively fixedly connected to both sides of the bottom side of the working panel (11) where the movable shaft seat (12) is located, a guide groove (38) is opened in each guide rail plate (37), and both sides of the bottom end of the movable shaft seat (12) close to the bracket (30) are respectively slidably connected to the two guide grooves (38).

3. The seamless steel pipe end cutting device according to claim 2, characterized in that, A blanking cover plate (45) allowing the movable shaft seat (12) to pass through is fixedly connected to the working panel (11) away from the bracket (30), and an inclined chute box (39) is fixedly connected to one end of the cabinet (10) away from the bracket (30).

4. A seamless steel pipe end cutting device according to claim 2, characterized in that, A set of lead screw seats (31) are fixedly connected to both ends of each slide rail (34) on the working panel (11), a lead screw (32) is rotatably connected between each set of lead screw seats (31), a lead screw motor (33) fixedly connected to the lead screw seat (31) is drivingly connected to the end of each lead screw (32), a cylinder (16) is fixedly connected to the movable shaft seat (12) below the main shaft (13), the extending end of the cylinder (16) passes through the movable shaft seat (12) and is fixedly connected to a clamping block (14), and the clamping block (14) is rotatably connected to the main shaft (13).

5. A seamless steel pipe end cutting device according to claim 4, characterized in that, A pressure sensor (15) is fixedly connected between the clamping block (14) and the extending end of the cylinder (16). A group of travel switches (40) are fixedly connected on one side of each slide rail (34), and each travel switch (40) is located at the designated start-stop position of the slider (36).

6. The seamless steel pipe end cutting equipment according to claim 1, characterized in that The storage bin (41) is inclined. A support rod (42) is fixedly connected to the center of the bottom of the storage bin (41). A group of saw blades (44) are evenly sleeved on the support rod (42). A spacer block (43) made of lightweight material is arranged between the saw blades (44). A plurality of elastic pieces (19) are fixedly connected evenly distributed on the outer side of the saw blade mandrel (18).

7. A seamless steel pipe end cutting device according to claim 6, characterized in that, A plurality of spline grooves (24) are evenly distributed and opened on the outer side of the saw blade mandrel (18). Each spline groove (24) can accommodate the corresponding support rod (42) to pass through. Teeth (20) are arranged at the end of the saw blade mandrel (18) far from the pressure plate (17) between every two spline grooves (24). Splines (26) are arranged at the corresponding positions of the inner wall of the spline sleeve (25) corresponding to each spline groove (24). The diameter of the end of the saw blade mandrel (18) provided with teeth (20) is smaller than the diameter of the end of the saw blade mandrel (18) close to the pressure plate (17).

8. A seamless steel pipe end cutting device according to claim 1, characterized in that, A plurality of installation grooves (35) are evenly distributed and opened at the end of the saw blade mandrel (18) close to the pressure plate (17). A centering clamping block (21) is slidably connected in each installation groove (35). A push rod (22) is slidably connected to the axis of the saw blade mandrel (18). The tip of the push rod (22) abuts against the inclined surface of each centering clamping block (21). A push plug (23) is fixedly connected to the end of the push rod (22) far from the pressure plate (17). The push plug (23) is made of soft elastic material and is frustum-shaped.

9. The seamless steel pipe end cutting equipment according to claim 1, characterized in that, Two second electric drive rods (51) are respectively fixedly connected to both sides of the collection box (52) at the bottom of the working panel (11). The extending end of each second electric drive rod (51) passes through the working panel (11) and is fixedly connected to the cutting cover box (46). Two symmetric clamping blocks (48) are slidably connected in the cutting cover box (46). Avoidance grooves (49) are opened on the clamping blocks (48) and the cutting cover box (46) at the corresponding positions of the saw blades (44). Two first electric drive rods (50) are respectively fixedly connected to both sides of the cutting cover box (46). The extending end of each first electric drive rod (50) extends into the cutting cover box (46) and is fixedly connected to the corresponding clamping block (48).

10. A seamless steel pipe end cutting device according to claim 1, characterized in that, A sewage valve (53) passing through the cabinet body (10) is fixedly connected to the bottom of the collection box (52). A water tank (54) is fixedly connected to one side of the collection box (52) inside the cabinet body (10). Water pumps (55) are respectively fixedly connected to both sides of the water tank (54). Each water pump (55) is connected to the corresponding nozzle (56) through a hose (57).

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