Steel pipe cutting device with positioning compensation structure and method

Abstract

The invention discloses a steel pipe cutting device and method with a positioning compensation structure, relates to the technical field of steel pipe cutting, and aims to solve the problems that the cutting position of a steel pipe cannot be flexibly controlled and different cutting depths corresponding to different steel pipes cannot be accurately controlled. Comprising a feeding bin and a discharging bin which are arranged in a spaced mode, and the two ends of the feeding bin and the feeding side of the discharging bin are each provided with a feeding assembly used for feeding of a steel pipe body. On the one hand, accurate positioning during steel pipe cutting machining is completed through a positioning compensation structure composed of the alignment assemblies, so that the cutting position of the steel pipe is flexibly controlled, and different cutting depths corresponding to different steel pipes can be accurately controlled; parameters of the to-be-cut steel pipe are obtained in real time to be matched with the cutting point position and the cutting face, and accurate application of the cutting action in the steel pipe cutting process is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe cutting, and in particular to a steel pipe cutting device and method with a positioning compensation structure. Background Art

[0002] The steel pipe cutting process includes radial section cutting of the steel pipe and axial cutting of the steel pipe end. The radial section cutting includes continuous cutting of long sections of steel pipe. During the continuous cutting, the steel pipe needs to be continuously fed and the cutting position needs to be determined to complete the precise cutting. The axial cutting of the steel pipe end needs to determine the accuracy of the cutting point and cutting direction to ensure the completion of precise cutting.

[0003] Referring to a steel pipe positioning and cutting device disclosed in patent application number 202111229303.7, although the above patent document has the function of axially rotating the steel pipe during cutting to complete cross-sectional cutting, it has the defect of being unable to flexibly control the cutting position of the steel pipe during the actual cutting process, and cannot perform intelligent and precise control when corresponding to different cutting depths of different steel pipes;

[0004] For this purpose, this application proposes a solution. Summary of the invention

[0005] The object of the present invention is to provide a steel pipe cutting device and method with a positioning compensation structure, which is used to solve the problem that the cutting position of the steel pipe cannot be flexibly controlled and the different cutting depths corresponding to different steel pipes cannot be accurately controlled.

[0006] The object of the present invention can be achieved by the following technical scheme: a steel pipe cutting device and method with a positioning compensation structure, comprising a feed bin and a discharge bin arranged at intervals, and a control panel is embedded outside the feed bin, and feeding components for feeding the steel pipe body are installed at both ends of the feed bin and the feeding side of the discharge bin;

[0007] A guide rod facing the feeding side is installed at the upper end of the feeding bin far from the feeding side, and a hook-shaped seat is sleeved on the guide rod along the axial direction. A cutting assembly matching the inner wall of the steel pipe body is installed at the lower end of the hook-shaped seat, and a positioning assembly for horizontal movement of the cutting assembly is arranged on the hook-shaped seat;

[0008] The alignment component comprises a mounting tube and a telescopic sleeve, a connecting plate connected to the telescopic sleeve is slidably mounted on the front side of the mounting tube, and the telescopic sleeve is connected to the hook-shaped seat.

[0009] The further configuration is as follows: the cutting assembly includes a chassis connected to the front end of the hook-shaped seat, a motor 1 is installed in the chassis, the output end of the motor 1 is connected to a mounting rod, a connecting rod is hinged outside the mounting rod, a motor 2 is installed on the rear side of the outer end of the connecting rod, and a cutting knife is installed at the end extending from the output end of the motor 2 to the front side.

[0010] It is further configured as follows: the front end of the outer ring side of the mounting rod is hinged with an electric push rod whose output end is rotatably connected to the connecting rod.

[0011] It is further configured as follows: the feeding assembly includes a ring and a self-propelled wheel, the ring is clamped to the opening of the feed bin or the discharge bin and a guide ring is installed at the outer end, a guide groove is opened on the outer side of the guide ring, a moving block is slidably installed on the guide ring through the guide groove, and several of the self-propelled wheels are installed on the inner ring side of the moving block and are arranged tangent to the outer side of the steel pipe body.

[0012] It is further configured as follows: a wheel groove is opened on the guide rod, a feed wheel matching the wheel groove is installed at the through-hole portion of the guide rod corresponding to the hook-type seat, a motor four is installed outside the feed wheel, and when the motor four is started, the feed wheel is driven to rotate and then the hook-type seat is driven to move horizontally along the guide rod.

[0013] It is further configured as follows: a plurality of evenly distributed lower push rods are installed at the bottom of the discharge bin on the far side of the feed, the output end of the lower push rod is connected with a support plate with the concave side facing upward, an upper push rod is installed on the inner side of the top end of the hook-shaped seat, the output end of the upper push rod is connected with a pressure plate with the concave side facing downward, and the support plate and the pressure plate are both in contact with the surface of the steel pipe body.

[0014] It is further configured as follows: a guide rail is installed between the bottom of the feed bin and the discharge bin, and the feed bin and the discharge bin move horizontally through the guide rail.

[0015] It is further configured that: a data acquisition module, a data analysis module, a signal execution module and a processor are provided in the control panel; the data acquisition module is used to collect the diameter-depth thickness value JSz and the cutting loss value QSz of the steel pipe cutting device in the feed bin and the discharge bin during processing, and send the diameter-depth thickness value JSz and the cutting loss value QSz to the data analysis module via the processor;

[0016] After receiving the diameter-depth thickness value JSz and the cutting loss value QSz, the data analysis module immediately analyzes the cutting risk of the cutting device. The analysis process is as follows: the diameter-depth thickness value JSz and the cutting loss value QSz within the time threshold are obtained and the cutting control coefficient QKi is obtained by numerical calculation. The cutting control coefficient QKi is compared and analyzed with the preset cutting control coefficient YQKi in the processor to generate an over-cutting signal, an under-cutting signal and a normal cutting signal;

[0017] The signal execution module is used to adjust motor one, motor two and motor four according to the received signal to complete the precise cutting of the steel pipe body.

[0018] The present invention also provides a steel pipe cutting method with a positioning compensation structure, comprising the following steps:

[0019] S1: Insertion: The steel pipe body is inserted from the feed bin and fed into the discharge bin at a uniform speed;

[0020] S2: Alignment: The cutting assembly follows the hook seat to penetrate into the inner wall of the steel pipe body and calibrate the cutting position;

[0021] S3: Cutting: Perform medial circumcision according to cutting requirements;

[0022] S4: Reset: The cutting assembly is reset and the steel pipe body is continued to be fed;

[0023] S5: Collection: Collection of finished products after cutting.

[0024] The present invention has the following beneficial effects:

[0025] 1. The present invention aims to solve the problem that the cutting position of the steel pipe cannot be flexibly controlled and the different cutting depths corresponding to different steel pipes cannot be accurately controlled; on the one hand, the steel pipe cutting process is completed by continuous feeding and continuous cutting action, and the precise positioning of the steel pipe cutting process is completed by the positioning compensation structure composed of the positioning component, so that the steel pipe cutting position can be flexibly controlled and the different cutting depths corresponding to different steel pipes can be accurately controlled, thereby improving the accuracy of steel pipe cutting; on the other hand, the cutting component is combined with an intelligent control system to obtain the parameters of the steel pipe to be cut in real time to match the cutting point and cutting surface, so as to achieve accurate application of the cutting action during the steel pipe cutting process;

[0026] 2. In the process of intelligent control of cutting action, through the combined use of feeding assembly and positioning assembly, the current length of the steel pipe body entering the discharge bin and the thickness of the steel pipe body are obtained in real time, and the electric push rod is started. The electric push rod drives the cutting knife to expand outward until it forms a conflict with the inner wall of the steel pipe body, and the motor 2 is started. The motor 2 drives the cutting knife to form a point cutting action, and then the motor 1 is started to drive the cutting knife to rotate to complete the surface cutting, thereby reducing the probability of "overcutting" or "insufficient" cutting when cutting the steel pipe, and the smooth conversion from "point cutting" to "surface cutting" can achieve accurate cutting of the steel pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the structure of a steel pipe cutting device with a positioning compensation structure proposed by the present invention;

[0029] Figure 2 This is a rear structural schematic diagram of the steel pipe cutting device with a positioning compensation structure proposed by the present invention;

[0030] Figure 3 A schematic cross-sectional view of a portion of the structure of a steel pipe cutting device with a positioning compensation structure proposed by the present invention;

[0031] Figure 4 A structural diagram of a feed assembly of a steel pipe cutting device with a positioning compensation structure proposed by the present invention;

[0032] Figure 5 This is a structural diagram of the alignment component of the steel pipe cutting device with a positioning compensation structure proposed by the present invention;

[0033] Figure 6 A structural diagram of a cutting assembly of a steel pipe cutting device with a positioning compensation structure proposed by the present invention;

[0034] Figure 7 A rear view of a cutting assembly of a steel pipe cutting device with a positioning compensation structure provided by the present invention;

[0035] Figure 8 This is an installation diagram of the guide rod of the steel pipe cutting device with a positioning compensation structure proposed by the present invention;

[0036] Fig. 9 This is a cross-sectional view of the overall structure of the steel pipe cutting device with a positioning compensation structure proposed by the present invention;

[0037] Fig.10 A front view of a steel pipe cutting device with a positioning compensation structure proposed by the present invention;

[0038] Fig.11 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Fig.12 It is a schematic diagram of the installation of the motor three in the present invention.

[0039] In the figure: 1. Feed bin; 2. Discharge bin; 3. Steel pipe body;

[0040] 4. Feed assembly; 401. Ring; 402. Guide ring; 403. Guide groove; 404. Moving block; 405. Self-propelled wheel;

[0041] 5. Hook seat; 6. Guide rod; 7. Push rod; 8. Support plate;

[0042] 9. Cutting assembly; 901. Motor 1; 902. Connecting rod; 903. Mounting rod; 904. Motor 2; 905. Cutting knife; 906. Motor 3;

[0043] 10. Upper push rod; 11. Pressing plate; 12. Wheel groove; 13. Mounting tube; 14. Connecting plate; 15. Telescopic sleeve; 16. Chassis; 17. Motor 4; 18. Feed wheel; 19. Guide rail. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Embodiment 1: In order to solve the problem that the cutting position of the steel pipe cannot be flexibly controlled and the different cutting depths corresponding to different steel pipes cannot be accurately controlled, the following technical solution is proposed:

[0046] Reference Figure 1 - Fig.12 As shown, the steel pipe cutting device with a positioning compensation structure in this embodiment includes a feed bin 1 and a discharge bin 2 arranged at intervals, and a control panel is embedded outside the feed bin 1, and feeding components 4 for feeding the steel pipe body 3 are installed at both ends of the feed bin 1 and the feeding side of the discharge bin 2;

[0047] A guide rod 6 facing the feed side is installed at the upper end of the far feed side of the feed bin 1, and a hook-shaped seat 5 is sleeved axially on the guide rod 6. A cutting assembly 9 matching the inner wall of the steel pipe body 3 is installed at the lower end of the hook-shaped seat 5, and a positioning assembly for horizontal movement of the cutting assembly 9 is arranged on the hook-shaped seat 5;

[0048] The alignment assembly includes a mounting tube 13 and a telescopic sleeve 15. A connecting plate 14 connected to the telescopic sleeve 15 is slidably mounted on the front side of the mounting tube 13. The telescopic sleeve 15 is connected to the hook-shaped seat 5. A motor 5 20 facing outward is mounted in the mounting tube 13. The output shaft of the motor 5 20 is connected to the connecting plate 14.

[0049] Reference Figure 6 and Figure 7 As shown, the cutting assembly 9 includes a chassis 16 connected to the front end of the hook-shaped seat 5, a motor 1 901 is installed in the chassis 16, the output end of the motor 1 901 is connected to a mounting rod 903, a connecting rod 902 is hinged on the outside of the mounting rod 903, a motor 2 904 is installed on the rear side of the outer end of the connecting rod 902, the output end of the motor 2 904 extends to the end of the front side and a cutting knife 905 is installed, and the front end of the outer ring side of the mounting rod 903 is hinged with an electric push rod whose output end is rotatably connected to the connecting rod 902;

[0050] Reference Fig.12As shown, a rotating plate 907 is rotatably installed at the end of the connecting rod 902 close to the second motor 904, and the output end of the second motor 904 passes through the rotating plate 907 and is connected to the cutting knife 905, and a third motor 906 is installed on the outer side of the hinge of the connecting rod 902 and the rotating plate 907. After the third motor 906 is started, it drives the rotating plate 907 to achieve an angle deflection through the hinge. It should be noted here that: the deflection action and the cutting action of the cutting knife 905 driven by the second motor 904 do not interfere with each other, that is, the rotating shaft of the second motor 904 and the connection point of the third motor 906 and the connecting rod 902 are not in the same vertical plane;

[0051] Reference Figure 4 and Fig.10 As shown, the feeding assembly 4 includes a collar 401 and a self-propelled wheel 405. The collar 401 is clamped to the opening of the feed bin 1 or the discharge bin 2 and a guide ring 402 is installed on the outer end. A guide groove 403 is opened on the outer side of the guide ring 402. A moving block 404 is slidably installed on the guide ring 402 through the guide groove 403. A driving wheel is embedded inside the moving block 404. The driving wheel moves along the guide groove 403 to drive the moving block 404 to complete the position change. A plurality of self-propelled wheels 405 are installed on the inner ring side of the moving block 404 and are tangent to the outer side of the steel pipe body 3.

[0052] Reference Figure 8 As shown, a wheel groove 12 is provided on the guide rod 6, and a feed wheel 18 matching with the wheel groove 12 is installed at the penetration portion of the hook-shaped seat 5 corresponding to the guide rod 6, and a motor 4 17 is installed outside the feed wheel 18. When the motor 4 17 is started, the feed wheel 18 is driven to rotate, thereby driving the hook-shaped seat 5 to move horizontally along the guide rod 6;

[0053] The control panel is provided with a data acquisition module, a data analysis module, a signal execution module and a processor; the data acquisition module is used to collect the diameter depth thickness value JSz and the cutting loss value QSz of the steel pipe cutting device located in the feed bin 1 and the discharge bin 2 during processing, wherein the diameter depth thickness value JSz includes the measurement of the length of the cutting knife 905 probing into the steel pipe body 3 and the thickness of the steel pipe body 3, and the cutting loss value QSz includes the measurement of the cutting knife thickness of the cutting knife 905 and the cutting debris loss length value, and the diameter depth thickness value JSz and the cutting loss value QSz are sent to the data analysis module via the processor;

[0054] After receiving the diameter-depth thickness value JSz and the cutting loss value QSz, the data analysis module immediately analyzes the cutting risk of the cutting device. The analysis process is as follows: the diameter-depth thickness value JSz and the cutting loss value QSz within the time threshold are obtained, and the cutting control coefficient QKi is calculated by the formula QKi=a×JSz+b×QSz, wherein a and b are preset proportional coefficients, and a>b>0, and the cutting control coefficient QKi is compared and analyzed with the preset cutting control coefficient YQKi in the processor. If the cutting control coefficient QKi>the preset cutting control coefficient YQKi, an over-cutting signal is generated; if the cutting control coefficient QKi<the preset cutting control coefficient YQKi, an under-cutting signal is generated; if the cutting control coefficient QKi=the preset cutting control coefficient YQKi, a normal cutting signal is generated;

[0055] The signal execution module is used to control the motor 1 901, the motor 2 904 and the motor 4 17 according to the received signal to complete the precise cutting of the steel pipe body 3. The signal execution module performs the following actions after receiving the signal:

[0056] Action 1: When the steel pipe body 3 is fed into the discharge bin 2, the length of the current steel pipe body 3 entering the discharge bin 2 and the thickness of the steel pipe body 3 are obtained in real time, and the electric push rod is started, and the electric push rod drives the cutting knife 905 to expand outward until it forms a conflict with the inner wall of the steel pipe body 3, and the motor 2 904 is started, and the motor 2 904 drives the cutting knife 905 to form a point cutting action, and then combined with the motor 1 901 to start and drive the cutting knife to rotate to complete the surface cutting, thereby reducing the "overcutting" or "less or no" cutting phenomenon that occurs when cutting the steel pipe, and achieving accurate cutting of the steel pipe body 3;

[0057] Action 2: During cutting, the start time of the electric push rod is determined according to the received over-cutting signal or under-cutting signal, thereby driving the cutting knife 905 to expand outward as a whole to form different cutting ranges, and completing corresponding adjustments corresponding to the over-cutting signal and under-cutting signal, thereby forming normal through-cutting; when a normal cutting signal is received, the cutting knife 905 directly completes a complete through-cutting of the corresponding thickness of the steel pipe body 3;

[0058] Action 3: After the cutting is completed, the cutting knife 905 withdraws, and the motor 5 20 is started to drive the hook seat 5 to rotate 180 degrees, and the steel pipe body 3 continues to feed for the next section of cutting.

[0059] Basic principle: When the cutting device is in use, the steel pipe body 3 is placed through the feed bin 1. According to the diameter of the steel pipe body 3, the moving block 404 moves along the guide groove 403. At this time, the inner diameter formed by the inner ring side of several groups of self-propelled wheels 405 can adapt to and resist the steel pipe body 3. After the self-propelled wheels 405 rotate, they drive the steel pipe body 3 to be fed into the discharge bin 2.

[0060] At the same time, the alignment components are synchronously started, and the motor 4 17 drives the feed wheel 18 to move so that the hook seat 5 moves axially along the guide rod 6 and is placed inside the steel pipe body 3. When the cutting knife 905 moves to the required cutting position, it stops, and the motor 2 904 and the electric push rod are started. The motor 2 904 drives the cutting knife 905 to rotate, and the electric push rod drives the connecting rod 902 to complete the deflection, thereby realizing the feeding of the cutting knife 905 into the steel pipe body 3, completing the "point cutting" at the cutting position, and then synchronously starting the motor 1 901 to drive several groups of cutting knives 905 to rotate to complete the "surface cutting", so as to complete the precise cutting of the entire steel pipe body 3;

[0061] On the one hand, the device completes the steel pipe cutting process through continuous feeding and continuous cutting action, and also completes the precise positioning during the steel pipe cutting process through the positioning compensation structure composed of the positioning components, so that the steel pipe cutting position can be flexibly controlled and the different cutting depths corresponding to different steel pipes can be accurately controlled, thereby improving the accuracy of steel pipe cutting; on the other hand, the cutting components are combined with the intelligent control system to obtain the parameters of the steel pipe to be cut in real time to match the cutting point and cutting surface, thereby achieving accurate application of the cutting action during the steel pipe cutting process.

[0062] Embodiment 2: This embodiment is based on Embodiment 1, with the feed bin 1 and the discharge bin 2 as an integrated structure design:

[0063] Reference Figure 1 - Figure 3 and Fig. 9 As shown, a plurality of lower push rods 7 are installed at equal distances at the bottom of the discharge bin 2 far from the feeding side, the output end of the lower push rod 7 is connected to a support plate 8 with the inner concave side facing upward, an upper push rod 10 is installed on the inner side of the top end of the hook-shaped seat 5, and the output end of the upper push rod 10 is connected to a pressing plate 11 with the inner concave side facing downward, the supporting plate 8 and the pressing plate 11 are both in contact with the surface of the steel pipe body 3, and a guide rail 19 is installed between the bottom of the feed bin 1 and the discharge bin 2, and the feed bin 1 and the discharge bin 2 are horizontally moved by the guide rail 19;

[0064] Before cutting, the relative interval between the feed bin 1 and the discharge bin 2 is pre-adjusted according to the length of the steel pipe body 3 to be cut, so that steel pipe bodies 3 of multiple sizes can be stably placed, and after placement, continuous feeding is completed through the feeding component 4 to achieve the purpose of high adaptability. During cutting, the steel pipe body 3 is clamped by the support plate 8 and the pressure plate 11, which is also conducive to the positioning function; after the cutting is completed, the pressure plate 11 is separated from the cut steel pipe body 3, and the feeding component 4 continues to feed and drives the steel pipe body 3 to move forward along the support plate 8 to the discharge bin 2, and finally completes the discharge.

[0065] That is, the interval between the feed bin 1 and the discharge bin 2 is adjusted by the guide rail 19, so as to achieve accurate cutting of the steel pipe body 3 with different cutting length requirements;

[0066] Embodiment 3: This embodiment is combined with Embodiments 1 and 2 to show that a steel pipe cutting device method with a positioning compensation structure includes the following steps;

[0067] S1: Insertion: A plurality of self-propelled wheels 405 are in contact with the surface of the steel pipe body 3 and rotate, thereby driving the steel pipe body 3 to enter the discharge bin 2 along the axial direction, that is, the steel pipe body 3 is inserted from the feed bin 1 and fed into the discharge bin 2 at a uniform speed, and before feeding, the position of the moving block 404 in the guide groove 403 is changed according to the diameter of the steel pipe body 3, so that the self-propelled wheels 405 adapt to the steel pipe body 3 to complete the feeding action;

[0068] S2: Alignment: After obtaining the parameters of the steel pipe body 3 in real time, pre-adjust the expansion area of ​​the cutting knife 905 in the cutting assembly so that the cutting knife 905 stops and enters when it is about to contact the inner wall of the steel pipe body 3, and the cutting knife 905 follows the hook seat 5 to probe into the inner wall of the steel pipe body 3, and then selects and calibrates the cutting position according to its own parameters, and finally stops the feeding assembly 4 and starts the cutting assembly 9 to complete the precise cutting;

[0069] S3: Cutting: During cutting, the cutting knife 905 can not only complete its own ring cutting action, but also drive the rotating plate 907 to complete angle deflection through the motor 3 906, that is, the angle at which the cutting knife 905 cuts into the steel pipe body 3 changes, so as to achieve the purpose of performing inner ring cutting action according to the cutting requirements;

[0070] S4: Reset: The cutting assembly 9 is reset, and the steel pipe body 3 continues to be fed. The pressing plate 11 is separated from the cut steel pipe body 3, and the feeding assembly 4 continues to feed and drives the steel pipe body 3 to move forward along the supporting plate 8 to the discharge bin 2;

[0071] S5: Collection: Collection of finished segmented steel pipes after cutting.

[0072] In summary: on the one hand, the steel pipe cutting process is completed by continuous feeding and continuous cutting action, and the precise positioning of the steel pipe cutting process is completed by the positioning compensation structure composed of the positioning components, so that the steel pipe cutting position can be flexibly controlled and the different cutting depths corresponding to different steel pipes can be accurately controlled, thereby improving the accuracy of steel pipe cutting. On the other hand, the cutting component is combined with the intelligent control system to obtain the parameters of the steel pipe to be cut in real time to match the cutting point and cutting surface, so as to achieve accurate application of the cutting action in the steel pipe cutting process; the combination of the two can achieve precise cutting of the steel pipe.

[0073] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula that is close to the actual value. The coefficients in the formula are set by technical personnel in this field according to actual conditions. The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited to this. Any technical personnel familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, make equivalent replacement or change, which should be covered within the protection scope of the present invention.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods.

Claims

1. A steel pipe cutting device with a positioning compensation structure, comprising a feed bin (1) and a discharge bin (2) arranged at intervals, and a control panel is embedded outside the feed bin (1), characterized in that: Both ends of the feed bin (1) and the feed side of the discharge bin (2) are equipped with feed assemblies (4) for feeding the steel pipe body (3); A guide rod (6) facing the feed side is installed at the upper end of the feed bin (1) on the far feed side, and the guide rod (6) is sleeved with a hook-shaped seat (5) along the axial direction. A cutting assembly (9) matching the inner wall of the steel pipe body (3) is installed at the lower end of the hook-shaped seat (5), and a positioning assembly for horizontal movement of the cutting assembly (9) is arranged on the hook-shaped seat (5); The alignment component comprises a mounting tube (13) and a telescopic sleeve (15); a connecting plate (14) connected to the telescopic sleeve (15) is slidably mounted on the front side of the mounting tube (13); and the telescopic sleeve (15) is connected to the hook-shaped seat (5).

2. The steel pipe cutting device with a positioning compensation structure according to claim 1, characterized in that: The cutting assembly (9) comprises a chassis (16) connected to the front end of the hook-shaped seat (5), a motor 1 (901) is installed in the chassis (16), the output end of the motor 1 (901) is connected to a mounting rod (903), a connecting rod (902) is hinged outside the mounting rod (903), a motor 2 (904) is installed on the rear side of the outer end of the connecting rod (902), and a cutting knife (905) is installed at the end portion of the output end of the motor 2 (904) extending to the front side.

3. The steel pipe cutting device with a positioning compensation structure according to claim 2, characterized in that: The front end of the outer ring side of the mounting rod (903) is hingedly connected with an electric push rod whose output end is rotatably connected to the connecting rod (902).

4. The steel pipe cutting device with a positioning compensation structure according to claim 1, characterized in that: The feeding assembly (4) comprises a collar (401) and a self-propelled wheel (405); the collar (401) is clamped to the opening of the feed bin (1) or the discharge bin (2) and a guide ring (402) is installed at the outer end; a guide groove (403) is provided on the outer side of the guide ring (402); a moving block (404) is slidably installed on the guide ring (402) through the guide groove (403); a plurality of self-propelled wheels (405) are installed on the inner ring side of the moving block (404) and are arranged tangent to the outer side of the steel pipe body (3).

5. The steel pipe cutting device with a positioning compensation structure according to claim 1, characterized in that: The guide rod (6) is provided with a wheel groove (12); a feed wheel (18) matching the wheel groove (12) is installed at a penetration portion of the hook seat (5) corresponding to the guide rod (6); a motor (17) is installed outside the feed wheel (18); when the motor (17) is started, the feed wheel (18) is driven to rotate, thereby driving the hook seat (5) to move horizontally along the guide rod (6).

6. The steel pipe cutting device with a positioning compensation structure according to claim 1, characterized in that: A plurality of lower push rods (7) are installed at an equal distance at the bottom of the discharge bin (2) on the far side from the feed, and the output end of the lower push rod (7) is connected to a support plate (8) with the concave side facing upwards. An upper push rod (10) is installed on the inner side of the top end of the hook seat (5), and the output end of the upper push rod (10) is connected to a pressure plate (11) with the concave side facing downwards. Both the support plate (8) and the pressure plate (11) are in contact with the surface of the steel pipe body (3).

7. The steel pipe cutting device with a positioning compensation structure according to claim 1, characterized in that: A guide rail (19) is installed between the bottoms of the feed bin (1) and the discharge bin (2), and the feed bin (1) and the discharge bin (2) move horizontally via the guide rail (19).

8. The steel pipe cutting device with a positioning compensation structure according to claim 1, characterized in that: The control panel is provided with a data acquisition module, a data analysis module, a signal execution module and a processor; The data acquisition module is used to collect the diameter-depth thickness value JSz and the cutting loss value QSz of the steel pipe cutting device located in the feed bin (1) and the discharge bin (2) during processing, and send the diameter-depth thickness value JSz and the cutting loss value QSz to the data analysis module via the processor; After receiving the diameter-depth thickness value JSz and the cutting loss value QSz, the data analysis module immediately analyzes the cutting risk of the cutting device. The analysis process is as follows: the diameter-depth thickness value JSz and the cutting loss value QSz within the time threshold are obtained and the cutting control coefficient QKi is obtained by numerical calculation. The cutting control coefficient QKi is compared and analyzed with the preset cutting control coefficient YQKi in the processor to generate an over-cutting signal, an under-cutting signal and a normal cutting signal; The signal execution module is used to adjust motor one (901), motor two (904) and motor four (17) according to the received signal to complete the precise cutting of the steel pipe body (3).

9. A method for cutting a steel pipe with a positioning compensation structure, using a steel pipe cutting device with a positioning compensation structure according to any one of claims 1 to 8, characterized in that: The steps include: S1: Insertion: The steel pipe body (3) is inserted from the feed bin (1) and fed into the discharge bin (2) at a uniform speed; S2: Alignment: The cutting assembly follows the hook-shaped seat (5) to penetrate into the inner wall of the steel pipe body (3) and calibrate the cutting position; S3: Cutting: Perform medial circumcision according to cutting requirements; S4: Reset: The cutting assembly is reset and the steel pipe body (3) is continued to be fed; S5: Collection: Collection of finished products after cutting.

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