A tube blank cutting system

Abstract

The present application belongs to the technical field of hot continuous rolling seamless steel pipe production, and discloses a pipe blank cutting system which can improve cutting efficiency and reduce labor and equipment maintenance costs. The pipe blank cutting system comprises a feeding lifting inclined rack, a single-stop feeder, an alignment roller way, a lifting and transverse moving device, a double-length roller way, a flame cutting device, a sizing device, a sizing roller way and a discharging device. The pipe blanks fall from top to bottom to the single-stop feeder through the feeding lifting inclined rack. The double-length roller way and the sizing roller way each comprise a plurality of flow roller way positions for parallel and interval accommodation of a single pipe blank. The single-stop feeder moves each pipe blank to the alignment roller way for alignment, and then moves each pipe blank to the flow roller way positions of the double-length roller way through the lifting and transverse moving device. The double-length roller way simultaneously transports each pipe blank to the corresponding roller way positions of the sizing roller way. After the pipe blanks are sized through the sizing device, the flame cutting device simultaneously cuts each pipe blank to obtain a plurality of sized pipe blanks. Each sized pipe blank is continuously transported to the discharging device through the sizing roller way for discharging.

Description

Technical Field

[0001] This invention relates to the field of hot-rolled seamless steel pipe production technology, specifically to a billet cutting system. Background Technology

[0002] Seamless steel pipe billets are generally made using multiple-length continuous casting round billets. Before heating, the multiple-length billets need to be cut to length. Currently, production mainly involves manual length cutting with band saws and length cutting with circular saws.

[0003] Band saw cutting equipment mainly includes a loading platform, a single-piece feeder and a centralized drive roller conveyor, band saws, a material feeder, and a collection basket. The length setting is achieved manually. Specifically, an electromagnetic crane lifts the multiple-length blank to the loading platform. The operator moves the multiple-length blank to the loading roller conveyor via a control box next to the machine. The roller conveyor transports the multiple-length blank to a fixed position, where it is manually set to length. After length setting, the roller conveyor transports the multiple-length blank to the band saw for cutting. After cutting, the roller conveyor transports it to the unloading station, where the length-set blank is fed into the collection basket using a material feeder hook. This unit typically uses 7 sets, 14 band saws, with a single sawing time of 6-8 minutes. It requires a large number of operators, has low cutting efficiency, and results in high labor intensity for workers.

[0004] The circular saw cutting equipment mainly includes a feeding conveyor chain, a material feeding device, a conveyor roller conveyor, a group transfer trolley, a length-fixing system, a circular saw, a material feeding hook, and a collection platform. Specifically, an electromagnetic crane lifts the multiple-length blanks onto the feeding conveyor chain, the material feeding device feeds the multiple-length blanks into the conveyor roller conveyor, the conveyor roller conveyor transports the multiple-length blanks to the group transfer trolley, and after being grouped and fixed in length, the multiple-length blanks are cut by the circular saw. The cut length-fixed blanks are then transported by the roller conveyor to another set of group transfer trolleys, which transport the length-fixed tube blanks to a fixed roller conveyor, transport them to a fixed position, and are unloaded by the material feeding hook. This unit typically uses 3 circular saws, with a single cutting time of approximately 1.5 minutes. Due to the high cost of the circular saws, and the fact that the saw blades are easily damaged during the cutting of high-temperature tube blanks, the circular saws require significant maintenance and incur high maintenance costs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a tube blank cutting system that can improve cutting efficiency while reducing manual labor intensity and equipment maintenance costs.

[0006] The tube blank cutting system according to the present invention includes: a loading and lifting inclined platform, a single-bracket feeder, an alignment roller conveyor, a lifting and traversing device, a multiple-length roller conveyor, a flame cutting device, a length-fixing device, a length-fixing roller conveyor, and a unloading device. The loading and lifting inclined platform is used to allow each tube blank to fall from top to bottom onto the single-bracket feeder. Both the multiple-length roller conveyor and the length-fixing roller conveyor include multi-flow roller conveyor positions for accommodating individual tube blanks in parallel at intervals. The single-bracket feeder transfers each tube blank to the alignment roller conveyor for alignment, and then the lifting and traversing device transfers each tube blank to the respective flow roller position of the multiple-length roller conveyor. The multiple-length roller conveyor transports the tube blanks on each flow roller position together to the corresponding roller position of the length-fixing roller conveyor. After all the tube blanks are length-fixed by the length-fixing device, the flame cutting device simultaneously cuts each tube blank to obtain multiple length-fixed tube blanks. Each length-fixed tube blank continues to be transported to the unloading device via the length-fixing roller conveyor. The unloading device is used to transport each length-fixed tube blank to the required station.

[0007] Furthermore, the discharge direction of the loading lifting inclined platform, single-support feeder, alignment roller conveyor and unloading device is perpendicular to the axis of the tube blank, and the discharge direction of the multiple length roller conveyor and the fixed length roller conveyor is parallel to the axis of the tube blank. The multiple length roller conveyor includes a preparation roller conveyor adjacent to the alignment roller conveyor and a conveying roller conveyor adjacent to the fixed length roller conveyor arranged in sequence. After each tube blank from the alignment roller conveyor fills each flow roller position on the preparation roller conveyor, the preparation roller conveyor conveys each tube blank on it together to the conveying roller conveyor.

[0008] Furthermore, the fixed-length roller conveyor includes a first roller conveyor adjacent to the conveying roller conveyor and a second roller conveyor adjacent to the unloading device arranged in sequence, as well as a third roller conveyor located between the first roller conveyor and the second roller conveyor. Each tube blank from the conveying roller conveyor is fixed in length by the fixed-length device on the first roller conveyor and is cut by the flame cutting device. Each tube blank formed is simultaneously sent to the second roller conveyor via the third roller conveyor. The unloading device is used to push each tube blank on the second roller conveyor to the required station.

[0009] Furthermore, the feeding lifting inclined platform includes a fixed platform and a rotating platform rotatably connected to the fixed platform, as well as a first driving device for driving the rotating platform to rotate relative to the fixed platform, wherein the fixed platform is close to the single-branch feeder, and the tube blank falls onto the single-branch feeder in sequence through the rotating platform and the fixed platform.

[0010] Furthermore, the single-bracket feeder includes a drive shaft near the discharge end of the loading lifting inclined platform, the axis of the drive shaft being parallel to the axis of the tube blank, a feed arm connected to the drive shaft, a first swing arm connected to the drive shaft, and a second drive device. The second drive device drives the first swing arm to swing to rotate the drive shaft connected to it, thereby rotating the feed arm connected to the drive shaft to transport the tube blank on the feed arm to the alignment roller table.

[0011] Furthermore, the alignment roller conveyor includes multiple rotating rollers arranged at intervals to support a single tube blank, and a stop on the outside of the rotating roller closest to the discharge end of the preparation roller conveyor. The tube blank from the single-bracket feeder is transported by each rotating roller to abut against the stop and then transferred to the preparation roller conveyor by the lifting and traversing device.

[0012] Furthermore, the lifting and traversing device includes a fixed base, a second swing arm rotatably connected to the fixed base, a support arm frame connected to one end of the second swing arm, a pull rod connected to the other end of the second swing arm, and a third drive device connected to the pull rod. The third drive device drives the pull rod to swing the second swing arm up and down, thereby driving the support arm frame to move up and down. The support arm frame is equipped with a support arm with a toothed structure. The toothed structure includes multiple helical teeth connected in sequence. Each helical tooth corresponds to a multi-flow roller position of the material preparation roller table. The helical teeth are used to support and roll the tube blank on the aligned roller table or the tube blank on the roller table position to the bottom of the helical teeth when the support arm rises, and to place the tube blank on the corresponding roller position of the material preparation roller table when the support arm falls.

[0013] Furthermore, the length-fixing device includes guide rails fixed on both sides of the length-fixing roller conveyor and a length-fixing trolley that can slide and lock along the guide rails. The length-fixing trolley is connected to a lifting mechanism and a length-fixing baffle connected to the lifting mechanism. The lifting mechanism is configured to lower the length-fixing baffle at the length-fixing position of the length-fixing trolley to simultaneously block the tube blanks on each flow roller conveyor from being aligned to length and cut. After the length-fixing is completed, the length-fixing baffle is raised so that the cut length-fixed tube blanks can enter the third roller conveyor.

[0014] Furthermore, the flame cutting device includes multiple flame cutting machines corresponding to different roller positions of the first roller table, and each flame cutting machine simultaneously cuts the tube blank on each roller table position.

[0015] Furthermore, the unloading device is located below the second roller conveyor. The unloading device includes a platform frame, which includes a first discharge end and a second discharge end located on opposite sides of the platform frame. The first discharge end corresponds to the first station, and the second discharge end corresponds to the second station. A first drive assembly is used to drive the platform frame to rise to lift the fixed-length tube blanks on the second roller conveyor and tilt the platform frame toward the first discharge end to unload each fixed-length tube blank to the first station. A second drive assembly is used to drive the platform frame to rise to lift the fixed-length tube blanks on the second roller conveyor and tilt the platform frame toward the second discharge end to unload each fixed-length tube blank to the second station.

[0016] Compared with the prior art, the billet cutting system of the present invention has a simpler equipment structure, more reliable operation, smaller space occupation, and is not affected by the material and temperature of the billet. It has higher fixed-length cutting efficiency, improves production efficiency while requiring less investment and maintenance. The cutting speed can reach 140 fixed-length billets / hour (up to 180 fixed-length billets / hour), which can meet the rolling needs of high-speed and high-capacity seamless steel pipe production. Attached Figure Description

[0017] Figure 1 This is a top view schematic diagram of the structure of the tube blank cutting system according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the cross-section along the AA direction is shown.

[0019] Figure 3 for Figure 1 A front view of the structure of the lifting and traversing device shown;

[0020] Figure 4 for Figure 1 A schematic diagram of the cross-section along the BB direction is shown.

[0021] Figure 5 for Figure 1 The diagram shows a cross-section along the CC direction. Detailed Implementation

[0022] To better understand the purpose, structure, and function of this invention, the invention will be described in further detail below with reference to the accompanying drawings.

[0023] Figure 1 The structure of a tube blank cutting system 100 according to an embodiment of the present invention is shown. The tube blank cutting system 100 may include a loading and lifting inclined platform 1, a single-stop feeder 2, an alignment roller conveyor 3, a lifting and traversing device 4, a multiple-length roller conveyor 5, a flame cutting device 7, a length-fixing device 8, a length-fixing roller conveyor 6, and a unloading device 9. The loading and lifting inclined platform 1 is used to allow each tube blank to fall from top to bottom onto the single-stop feeder 2. The multiple-length roller conveyor 5 and the length-fixing roller conveyor 6 both include multi-flow roller conveyor positions for accommodating individual tube blanks side-by-side at intervals. The single-stop feeder 2 transfers each tube blank to the alignment roller conveyor. After alignment of track 3, the lifting and transverse transfer device 4 transfers each tube blank to the respective flow roller position 53 of the multiple length roller track 5. The multiple length roller track 5 transports the tube blanks on each flow roller position 53 together to the corresponding roller position of the fixed length roller track 6. After each tube blank is fixed in length by the fixed length device 8, the tube blank is simultaneously cut by the flame cutting device 7 to obtain multiple fixed length tube blanks. Each fixed length tube blank continues to be transported to the unloading device 9 by the fixed length roller track 6. The unloading device 9 is used to transport each fixed length tube blank to the required station.

[0024] In operation, the tube blank cutting system 100 of this embodiment uses an electromagnetic crane to lift the tube blank to the loading lifting inclined platform 1. Under gravity, the tube blank rolls to the single-support feeder 2. The single-support feeder 2 moves one tube blank at a time to the alignment roller conveyor 3. After the tube blank is aligned on the alignment roller conveyor 3, the lifting and traversing device 4 moves it to the first flow roller position 53 (i.e., the roller position closest to the aligned tube 3) of the multiple-length roller conveyor 5. The above actions are repeated multiple times to move multiple tube blanks to the respective flow roller positions 53 of the multiple-length roller conveyor 5. After multiple tube blanks fill all roller conveyor positions 53, the multiple length roller conveyor 5 transports the tube blanks from each flow roller conveyor position 53 to the corresponding roller conveyor position of the fixed length roller conveyor 6. After all the tube blanks are fixed in length by the fixed length device 8, they are simultaneously cut by the flame cutting device 7. The resulting multiple fixed length tube blanks continue to be transported by the fixed length roller conveyor 6 to the unloading device 9. The unloading device 9 can transport each fixed length tube blank to the required station, for example, selectively transporting it to... Figure 1 The first station 20 shown can be a collection box or the second station 30 can be connected to the subsequent process via a conveyor chain.

[0025] In the tube blank cutting system 100 of this embodiment, the tube blanks falling from the loading lifting inclined platform 1 onto the single-support feeder 2 are aligned by the alignment roller conveyor 3 before entering the corresponding roller conveyor positions of the multiple-length pipe 5. This ensures that the tube blanks entering the multiple-length roller conveyor 5 are aligned and transported synchronously as a whole to the length-fixing roller conveyor 6 for subsequent length-fixing and cutting. Since the length-fixing device 8 is used to length-fix the tube blanks, the flame cutting device 7 is activated to cut all tube blanks simultaneously only when each tube blank reaches the length-fixing position. Therefore, this application aligns the tube blanks uniformly and transports them as a whole. The conveying method effectively avoids the problem of increased length setting time caused by unevenness in the tube blanks during transport, thus improving the efficiency of length setting and cutting. Meanwhile, the tube blank cutting system 100 of this embodiment uses a flame cutting device 7 to cut the tube blanks. Its structure is simpler, its operation more reliable, and it occupies less space compared to existing band saws and circular saws. It is also unaffected by the material and temperature of the tube blanks, resulting in high production efficiency, low investment, and minimal maintenance, better meeting the high-paced, high-capacity rolling needs of seamless steel pipe production. Furthermore, the length setting device 8 in the tube blank cutting system 100 of this embodiment can automatically set the length of the tube blanks, eliminating the need for additional manual length setting operations. This greatly reduces labor intensity. The length setting device 8 can be raised during cutting by the flame cutting device 7; the combined use of the two further shortens the length setting and cutting time, thereby contributing to improved tube blank cutting efficiency.

[0026] In such Figure 1In the preferred embodiment shown, the discharge direction of the loading lifting inclined platform 1, the single-bracket feeder 2, the alignment roller conveyor 3, and the unloading device 9 is perpendicular to the axial direction of the tube blank. The discharge direction of the multiple length roller conveyor 5 and the fixed length roller conveyor 6 is parallel to the axial direction of the tube blank. The multiple length roller conveyor 5 includes a preparation roller conveyor 51 adjacent to the alignment roller conveyor 4 and a conveying roller conveyor 52 adjacent to the fixed length roller conveyor 6 arranged in sequence. After each tube blank from the alignment roller conveyor 4 fills each flow roller position 53 on the preparation roller conveyor 51, the preparation roller conveyor 51 conveys each tube blank on it together to the conveying roller conveyor 52.

[0027] With this embodiment, the multiple length roller conveyor 5 and the fixed length roller conveyor 6 are distributed in the same straight direction. The loading lifting inclined platform 1, the single support feeder 2 and the alignment roller conveyor 3 are located on the side of the multiple length roller conveyor 5, and the unloading device 9 is located on the side of the fixed length roller conveyor 6. This arrangement makes the tube blank cutting system 100 more reasonable, occupies less space, and the tube blank can complete loading, fixed length, cutting and unloading in the shortest possible travel path. By configuring the multiple length roller conveyor 5 to include a preparation roller conveyor 51 and a conveying roller conveyor 52, where the preparation roller conveyor 51 can serve as a preparation position for simultaneously accommodating multiple tube blanks, and the conveying roller conveyor 52 serves as both a conveying position and a preparation position for entering the length-fixing roller conveyor 6, when all the tube blanks on the preparation roller conveyor 51 are transported as a whole to the conveying roller conveyor 52, the tube blanks on the loading lifting inclined platform 1 can continue to be transported to the preparation roller conveyor 51. With the cooperation of the two, the conveying efficiency of the multiple length roller conveyor 5 can be improved, thereby improving the subsequent length-fixing and cutting efficiency of the tube blanks.

[0028] Preferably, corresponding detection elements can be provided on the material preparation roller conveyor 51 and the conveying roller conveyor 52 respectively. When the detection element on the material preparation roller conveyor 51 detects that there is no material on the material preparation roller conveyor 51, material can be added to the material preparation roller conveyor 51. When the detection element on the conveying roller conveyor 52 detects that there is no material on the conveying roller conveyor 52, the material preparation roller conveyor 51 can generate a conveying action to transport the tube blank on it to the conveying roller conveyor 52.

[0029] Back Figure 1In the preferred embodiment shown, the length-fixing roller conveyor 6 may include a first roller conveyor 61 adjacent to the conveying roller conveyor 52 and a second roller conveyor 63 adjacent to the unloading device 9 arranged in sequence, and a third roller conveyor 62 located between the first roller conveyor 61 and the second roller conveyor 63. Each tube blank from the conveying roller conveyor 52 is fixed in length on the first roller conveyor 61 and simultaneously cut by the flame cutting device 7. The resulting length-fixed tube blanks are then fed into the second roller conveyor 63 as a whole via the third roller conveyor 62. The unloading device 9 is used to push each length-fixed tube blank on the second roller conveyor 63 to the required station. By configuring the fixed-length roller conveyor 6 to include a first roller conveyor 61, a second roller conveyor 63, and a third roller conveyor 62, where the first roller conveyor 61 can serve as a fixed-length cutting position for cutting each tube blank after fixed-length cutting, the third roller conveyor 62 serves as a conveying position and a preparation position for entering the unloading device 9, and the second roller conveyor 63 serves as the unloading position, when each tube blank on the conveying roller conveyor 52 is transported as a whole to the first roller conveyor 61 for fixed-length cutting, the resulting fixed-length tube blank can enter the third roller conveyor 62 as a whole. At the same time, the first roller conveyor 61 can continue to cut the tube blanks from the conveying roller conveyor 52 for fixed-length cutting, and the fixed-length tube blanks entering the third roller conveyor 62 continue to enter the second roller conveyor 63 for unloading. With the cooperation of the three roller conveyors, the conveying efficiency of the fixed-length roller conveyor 6 can be improved, thereby improving the efficiency of fixed-length cutting and unloading of tube blanks.

[0030] According to the present invention, combined Figure 1 and Figure 2 As shown, in a preferred embodiment, the loading lifting inclined platform 1 may include a fixed platform 11 and a rotating platform 12 rotatably connected to the fixed platform 11, and a first driving device 13 for driving the rotating platform 12 to rotate relative to the fixed platform 11. The fixed platform 11 is located near the single-bracket feeder 2, and the tube blank sequentially falls onto the single-bracket feeder 2 via the rotating platform 12 and the fixed platform 11. This arrangement prevents the tube blank from stopping rolling during its descent. By adjusting the rotation angle of the rotating platform 12 relative to the fixed platform 11, the potential energy of the tube blank during its descent can be adjusted, ensuring that the tube blank can smoothly fall onto the single-bracket feeder 2.

[0031] In another preferred embodiment, the loading lifting inclined platform 1 may include a support fixedly connected to the ground and a rotating platform rotatably connected to the support (neither shown in the figure), as well as a drive device for driving the rotating platform to rotate relative to the support. The rotating platform is positioned close to the single-bracket feeder 2, and the tube blank falls onto the single-bracket feeder via the rotating platform. In this embodiment, the potential energy of the tube blank located on it is adjusted by causing the rotating platform itself to rotate, resulting in a simpler structure.

[0032] Preferably, the rotating platform 12, the fixed platform 11, and the rotating platform can all be constructed from... Figure 1 The multiple diagonal baffles 14 shown are connected together.

[0033] According to the present invention, combined Figure 1 and Figure 2 As shown, the single-bracket feeder 2 may include a drive shaft 21 near the discharge end of the loading lifting inclined platform 1, the axis of the drive shaft 21 being parallel to the axis of the tube blank, a feed arm 23 connected to the drive shaft 21, a first swing arm 22 connected to the drive shaft 21, and a second drive device 24. The second drive device 24 drives the first swing arm 22 to swing, thereby rotating the drive shaft 21 connected to it, which in turn drives the feed arm 23 connected to the drive shaft 21 to rotate, so as to transport the tube blank on the feed arm 23 to the alignment roller table 3. In this embodiment, when the feed arm 23 is in the position of... Figure 2 The position shown allows for simultaneous material blocking and receiving. When the second drive device 24 drives the swing arm 22 to rotate clockwise, it can drive the feed arm 23 to rotate clockwise until the tube blank on the feed arm 23 rolls onto the alignment roller table 3 and then rotates in the opposite direction back to the starting position. Figure 2 The material is stopped and received again at the indicated position.

[0034] According to the present invention, combined Figure 1 and Figure 2 As shown, the alignment roller conveyor 3 may include multiple rotating rollers 31 arranged at intervals to support single tube blanks, and a stop 32 located on the outer side of the rotating roller 31 closest to the discharge end of the preparation roller conveyor 51. The tube blanks from the single-support feeder are transported by each rotating roller 31 to abut against the stop 32 and then transferred to the preparation roller conveyor 51 by the lifting and traversing device 4. The stop 32 is provided to position and align the side ends of the single tube blanks on it, so that the feed ends of each tube blank entering the preparation roller conveyor 51 are flush, thereby achieving the purpose of synchronously entering the conveying roller conveyor 52 as a whole.

[0035] According to the present invention, combined Figures 1 to 3 As shown, the lifting and traversing device 4 may include a fixed base 41 (such as...). Figure 2 As shown), a second swing arm 42 is rotatably connected to a fixed base 41; a support arm 45 is connected to one end of the second swing arm 42; a pull rod 43 is connected to the other end of the second swing arm; and a third drive device 44 is connected to the pull rod 43. The third drive device 44 drives the pull rod 43 to move, causing the second swing arm 42 to swing up and down, thereby driving the support arm 45 to move up and down. A toothed structure 47 (such as...) can be installed on the support arm 45. Figure 2 The support arm 46 (shown) and the toothed structure 47 may include a plurality of helical teeth 48 connected in sequence. Each helical tooth 48 corresponds to a multi-flow roller position 53 of the preparation roller conveyor 51. The helical teeth 48 are used to support the tube blank on the alignment roller conveyor 3 or the tube blank on the roller position 53 and roll it to the bottom of the helical teeth 48 when the support arm 46 rises, and to place the tube blank on the corresponding roller position 53 of the preparation roller conveyor 51 when the support arm 46 falls.

[0036] In a preferred embodiment, the lifting and traversing device 4 may include two second swing arms 42 symmetrically rotatably connected to the fixed base 41. One end of each of the two second swing arms 42 is simultaneously connected to the support arm 45, and the other end of each of the two second swing arms 42 is symmetrically connected to a tie rod 43. A crossbeam 49 may be connected between the two tie rods 43. Figure 1 As shown, the drive end of the third drive device 44 is connected to the middle of the crossbeam 49. This embodiment employs a double tie rod structure, which helps to improve the stability of the lifting and traversing device 4.

[0037] According to the present invention, combined Figure 1 and Figure 4 As shown, the length-fixing device 8 may include guide rails 81 fixed on both sides of the length-fixing roller conveyor 6 and a length-fixing trolley 82 that can slide and lock along the guide rails 81. The length-fixing trolley 82 is connected to a lifting mechanism 83 and a length-fixing baffle 84 connected to the lifting mechanism 83. The lifting mechanism 83 is configured to lower the length-fixing baffle 84 at the length-fixing position of the length-fixing trolley 82 to simultaneously block the tube blanks on each flow roller conveyor from being aligned to length and cut. After the length-fixing is completed, the length-fixing baffle 84 is raised so that the length-fixed tube blanks formed after cutting enter the third roller conveyor 62.

[0038] In such Figure 4 In the preferred embodiment shown, the lifting mechanism 83 may include a swing frame 831, a length-fixing baffle 84 connected to the free end of the swing frame 831, a lifting hydraulic cylinder 85 connected between the swing frame 831 and the length-fixing trolley 82 for driving the swing frame 831 to rise and fall relative to the length-fixing trolley 82, and a swing hydraulic cylinder 86 connected between the swing frame 831 and the length-fixing trolley 82 for driving the swing frame 831 to swing back and forth. After the length-fixing is completed, while the lifting hydraulic cylinder 85 drives the swing frame 831 to rise, the swing hydraulic cylinder 86 drives the left end of the swing frame 831 to swing to the right, which can effectively avoid obstructing the transport of the cut length-fixed tube blank to the third roller conveyor 62.

[0039] Preferably, the length-fixing trolley 82 can be locked and fixed to the guide rail 81 by a locking hydraulic cylinder 87; the length-fixing trolley 82 is driven by a geared motor 89 driving a worm gear 80 through a gear and rack mechanism 88 to move along the guide rail 81 for length-fixing. More preferably, the geared motor 89 may be equipped with an encoder for accurate length-fixing by the length-fixing trolley 82. Even more preferably, the length-fixing trolley 82 may be equipped with a billet detection element for detecting the arrival position of multiple-length billets and the conveying position of length-fixed billets.

[0040] According to the present invention, combined Figure 1 and Figure 4As shown, the flame cutting device 7 may include multiple flame cutting machines 71 corresponding to different roller positions of the first roller conveyor 61, and each flame cutting machine 71 simultaneously cuts the tube blank on each roller position. This arrangement not only makes the multiple flame cutting machines 71 more compact in arrangement and occupies less space, but also improves the cutting efficiency of the tube blank.

[0041] According to the present invention, combined Figure 1 and Figure 5 As shown, the unloading device 9 may be located below the second roller conveyor 63. The unloading device 9 may include a platform frame 91, which may include a first discharge end E and a second discharge end F located on opposite sides of it. The first discharge end E corresponds to the first station 20, and the second discharge end F corresponds to the second station 30. A first drive assembly 94 is used to drive the platform frame 91 to rise to lift the fixed-length tube blanks 40 on the second roller conveyor 63 and tilt the platform frame 91 toward the first discharge end E to unload each fixed-length tube blank 40 to the first station 20. A second drive assembly 95 is used to drive the platform frame 91 to rise to lift the fixed-length tube blanks 40 on the second roller conveyor 63 and tilt the platform frame 91 toward the second discharge end F to unload each fixed-length tube blank 40 to the second station 30.

[0042] When feeding materials, such as Figure 5 As shown, when the fixed-length tube blank 40 needs to be unloaded to the first station 20, the first drive assembly 94 can drive the platform frame 91 to rotate counterclockwise relative to the first fulcrum 92, so that the fixed-length tube blank 40 on the platform frame 91 rolls down to the first station 20; and when the fixed-length tube blank 40 needs to be unloaded to the second station 30, the second drive assembly 95 can drive the platform frame 91 to rotate clockwise relative to the second fulcrum 93, so that the fixed-length tube blank 40 on the platform frame 91 rolls down to the second station 30.

[0043] Preferably, the platform frame 91 may include Figure 1 The multiple parallel inclined grate bars 97 shown can be connected together by a synchronous beam 96. The first drive assembly 94 and the second drive assembly 95 can drive the inclined grate bars 97 to rise and fall through the synchronous beam 96 to realize the feeding of the fixed-length tube blank 40.

[0044] More preferably, such as Figure 1 As shown, the outermost part of the unloading device 9 in the direction perpendicular to the axis of the fixed-length tube blank can be provided with a stop 64. On the one hand, it can be used to align the fixed-length tube blanks 40 entering the platform frame 91 before unloading. On the other hand, it can prevent the fixed-length tube blanks 40 from coming out of the platform frame 91 in the direction parallel to the axis of the fixed-length tube blanks 40.

[0045] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0046] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tube blank cutting system, characterized in that, include: The system includes a loading and lifting inclined platform, a single-bracket feeder, an alignment roller conveyor, a lifting and traversing device, a multiple-length roller conveyor, a flame cutting device, a length-fixing device, a length-fixing roller conveyor, and a unloading device. The loading and lifting inclined platform is used to drop each tube blank from top to bottom onto the single-bracket feeder. Both the multiple-length roller conveyor and the length-fixing roller conveyor include multi-flow roller conveyor positions for accommodating individual tube blanks in parallel at intervals. The single-bracket feeder transfers each tube blank to the alignment roller conveyor for alignment, and then the lifting and traversing device unloads each tube blank. The tube blanks are respectively transferred to the respective roller positions of the multiple length roller conveyor. The multiple length roller conveyor transports the tube blanks on the respective roller positions to the corresponding roller positions of the fixed length roller conveyor. After the tube blanks are fixed in length by the fixed length device, the flame cutting device cuts the tube blanks simultaneously to obtain multiple fixed length tube blanks. The fixed length tube blanks continue to be transported by the fixed length roller conveyor to the unloading device. The unloading device is used to transport the fixed length tube blanks to the required station. The discharge directions of the loading lifting inclined platform, the single-bracket feeder, the alignment roller conveyor, and the unloading device are all perpendicular to the axial direction of the tube blank. The discharge directions of the multiple-length roller conveyor and the fixed-length roller conveyor are both parallel to the axial direction of the tube blank. The multiple-length roller conveyor includes a preparation roller conveyor adjacent to the alignment roller conveyor and a conveying roller conveyor adjacent to the fixed-length roller conveyor, arranged in sequence. After each tube blank from the alignment roller conveyor fills each flow roller position on the preparation roller conveyor, the preparation roller conveyor conveys each tube blank on it together to the conveying roller conveyor. The fixed-length roller conveyor includes a first roller conveyor adjacent to the conveying roller conveyor and a second roller conveyor adjacent to the unloading device, arranged in sequence, and a third roller conveyor located between the first roller conveyor and the second roller conveyor. Each of the tube blanks from the conveying roller conveyor is fixed to length by the fixed-length device on the first roller conveyor and is cut by the flame cutting device. Each of the formed fixed-length tube blanks simultaneously enters the second roller conveyor via the third roller conveyor. The unloading device is used to push each of the fixed-length tube blanks on the second roller conveyor to the required station. The lifting and traversing device includes a fixed base, a second swing arm rotatably connected to the fixed base, a support arm frame connected to one end of the second swing arm, a pull rod connected to the other end of the second swing arm, and a third driving device connected to the pull rod. The third driving device drives the pull rod to swing the second swing arm up and down, thereby driving the support arm frame to move up and down. The support arm frame is equipped with a support arm with a toothed structure. The toothed structure includes a plurality of helical teeth connected in sequence. Each helical tooth corresponds to a multi-flow roller position of the material preparation roller table. The helical teeth are used to support and roll the tube blank on the alignment roller table or the tube blank on the roller position to the bottom of the helical teeth when the support arm rises, and to place the tube blank on the corresponding roller position of the material preparation roller table when the support arm falls. The length-fixing device includes guide rails fixed on both sides of the length-fixing roller conveyor and a length-fixing trolley that can slide and lock along the guide rails. The length-fixing trolley is connected to a lifting mechanism and a length-fixing baffle connected to the lifting mechanism. The lifting mechanism is configured to lower the length-fixing baffle at the length-fixing position of the length-fixing trolley to simultaneously block the tube blanks on each position of the roller conveyor from being aligned to length and cut. After the length-fixing is completed, the length-fixing baffle is raised so that the cut length-fixed tube blanks can enter the third roller conveyor.

2. The tube blank cutting system according to claim 1, characterized in that, The loading lifting inclined platform includes a fixed platform and a rotating platform rotatably connected to the fixed platform, and a first driving device for driving the rotating platform to rotate relative to the fixed platform, wherein the fixed platform is close to the single-branch feeder, and the tube blank is sequentially dropped onto the single-branch feeder via the rotating platform and the fixed platform.

3. The tube blank cutting system according to claim 1, characterized in that, The single-bracket feeder includes a drive shaft near the discharge end of the loading lifting inclined platform, the axis of the drive shaft being parallel to the axis of the tube blank, a feed arm connected to the drive shaft, a first swing arm connected to the drive shaft, and a second drive device. The second drive device drives the first swing arm to swing, thereby rotating the drive shaft connected to it, which in turn drives the feed arm connected to the drive shaft to rotate, so as to transport the tube blank on the feed arm to the alignment roller conveyor.

4. The tube blank cutting system according to claim 1, characterized in that, The alignment roller conveyor includes multiple rotating rollers arranged at intervals to support a single tube blank, and a stop member located on the outside of the rotating roller closest to the discharge end of the preparation roller conveyor. The tube blank from the single-support feeder is transported by each of the rotating rollers to abut against the stop member and then transferred to the preparation roller conveyor by the lifting and traversing device.

5. The tube blank cutting system according to claim 1, characterized in that, The flame cutting device includes multiple flame cutting machines corresponding to different roller positions of the first roller table, and each flame cutting machine simultaneously cuts the tube blank on each roller table position.

6. The tube blank cutting system according to claim 1, characterized in that, The unloading device is located below the second roller conveyor. The unloading device includes a platform frame, which includes a first discharge end and a second discharge end located on opposite sides of the platform frame. The first discharge end corresponds to a first station, and the second discharge end corresponds to a second station. A first drive assembly is used to drive the platform frame to rise to lift the fixed-length tube blanks on the second roller conveyor and tilt the platform frame toward the first discharge end to unload each fixed-length tube blank to the first station. A second drive assembly is used to drive the platform frame to rise to lift the fixed-length tube blanks on the second roller conveyor and tilt the platform frame toward the second discharge end to unload each fixed-length tube blank to the second station.

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