Fully automatic steel pipe cutting machine suitable for various outer diameters

Abstract

A fully automatic steel pipe cutting machine suitable for various outer diameters employs a centering wheel, end rollers, and a conveyor wheel to position the steel pipe axis. An end module positions the end of the pipe, while a rotating wheel enables circumferential rotation and the conveyor wheel facilitates axial movement. This design flexibly adapts to steel pipes of different outer diameters, and the cutting head of the cutting module can also be adjusted to cut pipes of varying diameters. Unlike traditional designs that push the pipe from the end furthest from the end module, this conveyor wheel design simplifies the structure and accommodates pipes of any length. Even when the last section of the pipe is cut, the conveyor wheel can still output it, making it very convenient to use. Furthermore, the rotating and opening design of the upper shell greatly facilitates the loading and positioning of the steel pipe. Compared to traditional designs where the upper shell cannot rotate, this method is clearly more convenient and faster to use.

Description

Technical Field

[0001] This invention relates to steel pipe cutting technology, and in particular to a fully automatic steel pipe cutting machine suitable for various outer diameters. Background Technology

[0002] Currently, laser cutting is mainly used for cutting and drilling steel pipes. The operation process is roughly as follows:

[0003] 1. The feeding mechanism outputs the piles of steel pipes one by one and then transports them to the clamping station;

[0004] 2. The clamps at the clamping station clamp and position the steel pipe;

[0005] 3. The steel pipe is transported to the processing station and cut by a laser cutting machine. During processing, the steel pipe does not rotate, but the cutting head of the laser cutting machine rotates around the steel pipe to process it.

[0006] 4. After processing is completed, the workpiece is transported to the output station and then output through the output device.

[0007] This processing method is complex in several ways, requiring material feeding, input, clamping, processing, and output, resulting in a relatively large structure. Secondly, it is generally only suitable for cutting steel pipes of one type (outer diameter). For steel pipes with different outer diameters, corresponding components need to be replaced, leading to higher procurement, usage, and maintenance costs.

[0008] Currently, there is no steel pipe cutting machine that can be flexibly used in the larger diameter range, which has become a technical problem that urgently needs to be solved. Summary of the Invention

[0009] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a fully automatic steel pipe cutting machine applicable to various outer diameters, which can flexibly adapt to steel pipes of various outer diameters.

[0010] To achieve the above objectives, the present invention provides a fully automatic steel pipe cutting machine suitable for various outer diameters, including a frame and a cutting part, wherein the cutting part is mounted on the frame and cuts the steel pipe;

[0011] The cutting section includes at least one clamping module and at least one cutting module. The clamping module is used to clamp the steel pipe, center its axis, and transport it to the end module. The cutting module cuts the steel pipe with a cutting head to complete the cutting of the steel pipe.

[0012] The clamping module includes a clamping frame, a lower shell, and an upper shell. The lower shell is fixed on the clamping frame, the clamping frame is mounted on the frame, and the upper shell is assembled with the lower shell.

[0013] The upper and lower shells are respectively equipped with centering half-discs, and the centering half-discs are provided with centering arc grooves. Centering gears are also installed on the outer wall of the centering half-discs. The centering gears mesh with the centering drive gears for transmission. The centering drive gears are fitted onto the centering motor shaft, and the centering motor shaft is installed inside the centering motor. The centering motor is installed on the clamping frame.

[0014] The upper and lower shells are each equipped with a semi-fixed disc. The semi-fixed disc has a groove that engages with and slides with a centering rod. A centering pin is installed on the centering rod, and a centering wheel is installed on the end of the centering rod that is inserted into the centering half-disc. The centering pin is engaged with and slides with the centering arc groove. There are at least two centering rods that are evenly distributed along the circumference of the centering half-disc.

[0015] The centering rod is directly or indirectly assembled with the conveyor frame. The conveyor frame is equipped with a conveyor motor. The conveyor motor shaft is connected to the conveyor wheel shaft via a conveyor belt to form a belt drive mechanism. The conveyor wheel shaft is mounted on the conveyor frame, and a conveyor wheel is fixedly fitted on the conveyor wheel shaft.

[0016] As a further improvement of the present invention, one end of the lower shell and the upper shell are hinged together by a hinge shaft; the upper shell is also hinged to one end of the opening and closing electric cylinder shaft, the other end of the opening and closing electric cylinder shaft is installed in the opening and closing electric cylinder, and the outer shell of the opening and closing electric cylinder is hinged to the clamping frame.

[0017] As a further improvement of the present invention, the center rod is assembled and fixed with the sliding frame, and the sliding frame is provided with a sliding groove. The sliding groove engages with and slides with the conveying frame block. The conveying frame block is installed on the conveying frame, and a conveying frame shaft is installed on the conveying frame. One end of the conveying frame shaft is fitted with a conveying spring and passes through the sliding frame. The conveying spring provides elastic resistance to the movement of the conveying frame towards the sliding frame.

[0018] As a further improvement of the present invention, the centering motor shaft is assembled with the input shaft of the centering encoder, and the centering encoder is mounted on the clamping frame.

[0019] As a further improvement of the present invention, the cutting section further includes at least one receiving component, which is used to receive the delivered steel pipe;

[0020] The receiving assembly includes a receiving platform, a receiving seat, a receiving base plate, a receiving side plate, and a receiving screw. The receiving platform is mounted on the frame, the receiving seat is mounted on the receiving platform, and a receiving slide groove is provided on the receiving platform. The receiving slide groove engages with and slides with the receiving slider. The receiving slider is located on the receiving side plate.

[0021] The receiving side plate is fitted over the receiving screw and is screwed into it. The receiving screw is mounted on the receiving seat. The receiving slider or receiving side plate is assembled with one end of the receiving input shaft.

[0022] As a further improvement of the present invention, the fully automatic steel pipe cutting machine also includes an end module, which is used to detect whether the steel pipe is properly clamped and to rotate the steel pipe.

[0023] The end module includes an end frame, an end box, and an end electric cylinder. The end electric cylinder and the end frame are mounted on the frame. An end sliding shaft is mounted on the end frame. The end box is fitted over and assembled with the end sliding shaft. The end cylinder shaft of the end electric cylinder is assembled with the end box.

[0024] The end box includes a first box plate and a second box plate. The first box plate is assembled with a fixed plate. The fixed plate is provided with a fixed plate groove. The fixed plate groove engages with and slides with a radial rod. An end roller is installed on one end of the radial rod that enters the inner side of the fixed plate. A radial rod pin is also installed on the radial rod. The radial rod pin is inserted into a radial arc groove and engages with and slides with it. The radial arc groove is provided on the radial plate. A radial gear is fitted on the outside of the radial plate. The radial gear meshes with a radial drive gear for transmission. The radial drive gear is fitted and fixed on the radial motor shaft. The radial motor shaft is installed inside the radial motor, and the radial motor is mounted on the second box plate.

[0025] As a further improvement of the present invention, the end box also includes a third box plate, on which a collision switch is installed. The signal of the collision switch is connected to the industrial control computer and the trigger end of the collision switch is directly opposite the end of the trigger shaft. One end of the trigger shaft passes through the second box plate and is fitted with a trigger spring before being assembled with the shaft ring of the end face bearing. The seat ring of the end face bearing can be pressed against the end of the steel pipe.

[0026] As a further improvement of the present invention, two rotary wheel assemblies are also installed on the first box plate. The rotary wheel assembly includes a clearance slide rail with a clearance groove. The clearance groove engages with and slides with a clearance slider. A third rotating shaft is installed on the clearance slider. A rotating belt passes around the first rotating shaft, the second rotating shaft, and the third rotating shaft to form a belt drive mechanism. One end of the clearance slider is assembled with a tension spring, and the other end of the tension spring is directly or indirectly assembled with the first box plate. The tension spring applies a spring force to the clearance slider to pull it away from the first rotating shaft.

[0027] The second rotating shaft is mounted on the rotating wheel seat and fixed to the rotating wheel. The rotating wheel seat is fitted onto the rotating wheel screw and assembled with it by screwing. The two rotating wheel seats and the rotating wheel screw have opposite screw directions and the rotating wheel seats are directly or indirectly engaged or slidably assembled with the first box plate. The rotating wheel screw is mounted on the first box plate. The rotating wheel screw is connected to the rotating wheel motor shaft through the rotating wheel belt and forms a belt drive mechanism. The rotating wheel motor shaft is installed inside the rotating wheel motor. The rotating wheel motor is mounted on the second box plate.

[0028] One of the first rotating shafts passes through the first housing plate and is connected to the output shaft of the rotary motor, which is mounted on the second housing plate; the other first rotating shaft passes through the first housing plate and is assembled to the input shaft of the rotary encoder, which is mounted on the second housing plate.

[0029] The rotating belt passes over two first rotating shafts and at least one auxiliary belt shaft to form a belt drive mechanism, wherein the auxiliary belt shaft is mounted on the second housing plate.

[0030] As a further improvement of the present invention, the cutting module includes an outer frame, a transverse frame, and a lifting frame. The outer frame is mounted on a cutting bracket, which is mounted on a machine frame. The transverse frame is mounted inside the outer frame, and transverse frame slide rails are respectively installed at the upper and lower ends of the outer frame. The transverse frame slide rails engage and slide with the corresponding transverse frame sliders. The transverse frame sliders are mounted on the transverse frame, and a transverse frame block is provided on the transverse frame. The transverse frame block is fitted onto a transverse screw and is threadedly engaged with it. The transverse screw is mounted on the outer frame, and one end of the transverse screw is connected to the transverse motor shaft of the transverse motor. The transverse frame block is also assembled with a transverse input shaft, which is installed inside a transverse displacement sensor. The transverse displacement sensor and the transverse motor are both mounted on the outer frame.

[0031] The transverse frame is equipped with a lifting electric cylinder, a lifting displacement sensor, and a lifting optical shaft. The lifting cylinder shaft of the lifting electric cylinder and the lifting input shaft of the lifting displacement sensor are respectively assembled with the lifting frame. The lifting frame is equipped with a guide tube and a longitudinal slide rail. The guide tube is axially slidably mounted on the lifting optical shaft.

[0032] The longitudinal slide rail is axially slidably mounted on the cutting slide rail, which is installed on the cutting head. The cutting head is also assembled and fixed with the longitudinal cylinder shaft of the longitudinal electric cylinder and the longitudinal input shaft of the longitudinal displacement sensor. The longitudinal electric cylinder and the longitudinal displacement sensor are both installed on the lifting frame.

[0033] As a further improvement of the present invention, the fully automatic steel pipe cutting machine also includes a feeding rack, which is installed on the machine frame and feeds steel pipes one by one to the cutting part; the feeding rack is also equipped with a first feeding plate and a second feeding plate, the second feeding plate is used to block the steel pipes on the feeding rack from passing through, and the first feeding plate is used to block a steel pipe located between the first feeding plate and the second feeding plate from passing through.

[0034] The beneficial effects of this invention are:

[0035] This invention employs the movement of a centering wheel, end rollers, and a conveyor wheel to position the steel pipe axis. An end module is used to position the end of the steel pipe, while a rotating wheel enables the circumferential rotation of the pipe, and the conveyor wheel enables its axial movement. This design can flexibly adapt to steel pipes of different outer diameters, and the cutting head of the cutting module can also be adjusted to accommodate cutting steel pipes of varying outer diameters.

[0036] This invention employs a conveyor wheel design, unlike the traditional design that pushes the steel pipe from one end away from the end module. This design is simpler and can accommodate steel pipes of any length. Even when the steel pipe is cut to its final section, the conveyor wheel can still output the pipe, making it very convenient to use. Furthermore, the rotating and opening design of the upper shell greatly facilitates the loading and positioning of the steel pipe. Compared to traditional designs where the upper shell cannot rotate and open, this method is clearly more convenient and faster to use. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0038] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0039] Figure 3 This is a cross-sectional view of the present invention located at the center plane of the axis of the collision switch 550;

[0040] Figure 4 yes Figure 3 Enlarged view at F1;

[0041] Figure 5 yes Figure 3 Sectional view of AA;

[0042] Figure 6 yes Figure 3 Partial sectional view of BB (Chinese border).

[0043] Figure 7 This is a partial structural diagram of the feed belt at point 810;

[0044] Figure 8 This is a partial structural diagram of the present invention. Figure 1 ;

[0045] Figure 9 This is a partial structural diagram of the present invention. Figure 2 ;

[0046] Figure 10 This is a structural schematic diagram of the receiving component 200;

[0047] Figure 11 This is a structural schematic diagram of the end module 400;

[0048] Figure 12 This is a partial structural diagram of the end module 400. Figure 1 ;

[0049] Figure 13 This is a partial structural diagram of the end module 400. Figure 2 ;

[0050] Figure 14 This is a partial structural diagram of the end module 400. Figure 3 ;

[0051] Figure 15 This is a partial structural diagram of the end module 400. Figure 4 ;

[0052] Figure 16 This is a structural diagram of the clamping module 300 (upper shell 330 closed);

[0053] Figure 17 This is a structural diagram of the clamping module 300 (upper shell 330 open);

[0054] Figure 18 This is a partial structural diagram of the clamping module 300 (upper shell 330 open).

[0055] Figure 19 This is a partial structural diagram of the clamping module 300 (upper shell 330 closed).

[0056] Figure 20 This is a structural schematic diagram of the conveyor frame 380 and the sliding frame 370;

[0057] Figure 21 This is a partial structural diagram of the centering half-plate at 350° and the centering rod at 360°.

[0058] Figure 22 This is a structural schematic diagram of the cutting module 600;

[0059] Figure 23 This is a structural diagram of the cutting module 600 (excluding the cutting bracket 150).

[0060] Figure 24 This is a partial structural diagram of the cutting module at position 600. Figure 1 ;

[0061] Figure 25 This is a partial structural diagram of the cutting module at position 600. Figure 2 ;

[0062] Figure 26 This is a partial structural diagram of the cutting module at position 600. Figure 3 ;

[0063] Figure 27 This is a partial structural diagram of the cutting module at position 600. Figure 4 . Detailed Implementation

[0064] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0065] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] See Figures 1-6 , Figures 8-9 The fully automatic steel pipe cutting machine of this embodiment includes a frame 110, a feeding rack 120, and a cutting section. The feeding rack 120 is installed on the frame 110 and feeds steel pipes 01 one by one to the cutting section, while the cutting section is installed on the frame 110 and cuts the steel pipes 01.

[0067] The cutting section includes multiple receiving assemblies 200, at least one clamping module 300, one end module 400, and at least one cutting module 600. The receiving assemblies 200 are used to receive steel pipes 01 fed from the feeding rack 120. The clamping module 300 is used to clamp the steel pipe, center its axis, and convey it to the end module 400. The end module 400 is used to detect whether the steel pipe is properly clamped and to rotate the steel pipe 01. The cutting module 600 cuts the steel pipe with a cutting head 770 to complete the cutting of the steel pipe.

[0068] A guide chute 140 is also installed on the frame 110 near the cutting module 600. The lowest end of the guide chute 140 is located above the storage box 160, thereby guiding the cut steel pipe segments into the storage box 160 for storage. The storage box 160 is mounted on the frame 110.

[0069] See Figures 1-2 , Figure 7To prevent the steel pipes 01 on the feeding rack 120 from getting stuck and thus unable to enter the cutting section one by one, this embodiment has a through feeding belt groove 121 on the feeding rack 120. A feeding belt frame is installed at the feeding belt groove 121, and a feeding belt 810 is installed on the feeding belt frame. The feeding belt 810 is driven by a feeding belt shaft 820, one end of which is connected to the output shaft of the feeding belt motor 510. After the feeding belt motor 510 is started, it can drive the feeding belt 810 to run, so that when the steel pipes 01 are stuck, the running of the feeding belt 810 can loosen the steel pipes 01, allowing the steel pipes 01 to enter the cutting section one by one.

[0070] The feeding rack 120 is also equipped with a first feeding plate 131 and a second feeding plate 132. The second feeding plate 132 is used to block the passage of steel pipes on the feeding rack 120, and the first feeding plate 131 is used to block the passage of a steel pipe located between the first feeding plate 131 and the second feeding plate 132. In use, the second feeding plate 132 is first moved down to not exceed the end face of the feeding rack 120 so that the steel pipe closest to the first feeding plate 131 rolls towards the first feeding plate 131 and enters between the first feeding plate 131 and the second feeding plate 132. Then, the second feeding plate 132 is moved up so that the second feeding plate 132 jams this steel pipe between the first feeding plate 131 and the second feeding plate 132, and other steel pipes cannot pass through the second feeding plate 132. When it is necessary to input steel pipe 01 into the cutting section, the first feeding plate 131 moves down so that the steel pipe 01 rolls towards the cutting section under the action of gravity and finally enters the cutting section. Then repeat the above steps to supply steel pipes 01 to the cutting section one by one. In this embodiment, the up and down movement of the first feeding plate 131 and the second feeding plate 132 can be achieved by different electric cylinders, pneumatic cylinders, hydraulic cylinders, etc.

[0071] See Figures 1-6 , Figures 8-10 The receiving assembly 200 includes a receiving platform 210, a receiving seat 240, a receiving base plate 220, a receiving side plate 230, and a receiving screw 250. The receiving platform 210 is mounted on the frame 110, and the receiving seat 240 is mounted on the receiving platform 210. The receiving platform 210 is provided with a receiving groove 211, which engages with and slides with a receiving slider 231. The receiving slider 231 is mounted on the receiving side plate 230. Several balls 201 are spherically rolled on the end faces of the receiving base plate 220 and the receiving side plate 230 that contact the steel pipe 01. The balls 201 are used to reduce the friction between the steel pipe and the receiving base plate 220 and the receiving side plate 230 in the circumferential rotation direction and the axial movement direction.

[0072] The receiving side plate 230 is fitted onto the receiving screw 250 and threadedly engaged with it. The receiving screw 250 is rotatably mounted on the receiving seat 240 but cannot move axially. The receiving slider 231 or the receiving side plate 230 is assembled to one end of the receiving input shaft 541, and the other end of the receiving input shaft 541 is inserted into the receiving potentiometer 540, which is mounted on the receiving seat 240 or the receiving platform 210. When the receiving screw 250 is rotated, the receiving side plate 230 is moved along the receiving groove 211 via the thread, thereby adjusting the distance between the receiving side plate 230 and the receiving base plate 220. At the same time, the receiving input shaft 541 is moved so that the receiving potentiometer 540 detects the displacement and inputs the signal into the industrial control computer. This method is mainly to accommodate steel pipes with different outer diameters. If the receiving side plate 230 is fixed, the axis of steel pipes with different outer diameters will be significantly offset relative to the receiving bottom plate 220 and the receiving side plate 230, which will cause difficulties in subsequent axis alignment and conveying.

[0073] See Figures 1-9 , Figures 11-15 The end module 400 includes an end frame 410, an end box 420, and an end electric cylinder 520. The end electric cylinder 520 and the end frame 410 are mounted on the frame 110. An end sliding shaft 411 is mounted on the end frame 410. The end box 420 is fitted around the end sliding shaft 411 and is axially slidable with it. The end cylinder shaft 521 of the end electric cylinder 520 is assembled with the end box 420. After the end electric cylinder 520 is activated, it can drive the end cylinder shaft 521 to extend and retract axially, thereby causing the end box 420 to slide along the end sliding shaft 411. This design is mainly for achieving the cutting of steel pipes to different lengths, such as... Figure 3 Moving the pipe to the left allows for cutting longer segments, while moving it to the right allows for cutting shorter segments (steel pipe 01 is cut into segments).

[0074] The end box 420 includes a first box plate 421, a second box plate 422, and a third box plate 423. A collision switch 550 is mounted on the third box plate 423. The signal of the collision switch 550 is connected to an industrial control computer, and the trigger end of the collision switch is directly opposite the end of the trigger shaft 430. One end of the trigger shaft 430 passes through the second box plate 422 and is fitted with a trigger spring 501 before being assembled with the bearing ring of the end face bearing 432. The bearing ring of the end face bearing 432 can press against the end of the steel pipe 01, thereby allowing the steel pipe 01 to rotate relative to the trigger shaft 430 via the end face bearing 432. The trigger spring 501 applies a thrust away from the second box plate 422 to the end face bearing 432 so that when the end face bearing 432 is not pressed, the trigger shaft 430 moves away from the collision switch 550, at which time the collision switch 550 is not triggered. This design mainly uses whether the collision switch 550 is triggered to determine whether the end of the steel pipe 01 is pressed into place with the end face bearing 432, thereby determining whether the end of the steel pipe and the end module 400 have completed positioning. Once positioning is completed, the steel pipe 01 can be cut.

[0075] The first box plate 421 is assembled with the fixed plate 470. The fixed plate 470 is provided with a fixed plate groove 471. The fixed plate groove 471 is engaged and slidably assembled with the radial rod 480. An end roller 481 is installed on one end of the radial rod 480 that enters the inner side of the fixed plate 470. A radial rod pin 482 is also installed on the radial rod 480. The radial rod pin 482 is inserted into the radial arc groove 491 and engaged and slidably assembled with it. The radial arc groove 491 is provided on the radial plate 490. A radial gear 862 is fitted on the outside of the radial plate 490. The radial gear 862 meshes with the radial drive gear 861 for transmission. The radial drive gear 861 is fitted and fixed on the radial motor shaft 581. The radial motor shaft 581 is installed in the radial motor 580 and the radial motor 580 is installed on the second box plate 422. After the radial motor 580 starts, it drives the radial disk 490 to rotate. The radial disk 490, through the radial arc groove 491 and the radial rod pin 482, drives the radial rod 480 to slide along the fixed disk groove 471 relative to the diameter of the radial disk 490, thereby causing the end roller 481 to move away from or towards the axis of the radial disk 490. In the initial state, the end roller 481 is in the position furthest from the axis of the radial disk 490. Once the steel pipe 01 pushes the trigger shaft 430 to trigger the collision switch 550, the radial motor 580 starts, thereby driving the end roller 481 to move towards the steel pipe 01 until the end roller 481 presses against the outside of the steel pipe 01, completing the alignment of the steel pipe 01 with the axis of the radial disk 490. There are at least three end rollers 481, which are evenly distributed in the circumferential direction of the radial disk 490, thereby applying a uniform clamping force in the circumferential direction to the outer wall of the steel pipe 01. The use of end rollers 481 can also effectively reduce the frictional resistance of the steel pipe when it rotates circumferentially.

[0076] Two rotating wheel assemblies are also installed on the first box plate 421. The rotating wheel assembly includes a clearance slide rail 460, on which a clearance slide groove 461 is provided. The clearance slide groove 461 engages with and slides with the clearance slider 8331. A third rotating shaft 833 is installed on the clearance slider 8331. A rotating belt 830 passes around the first rotating shaft 831, the second rotating shaft 832, and the third rotating shaft 833 to form a belt drive mechanism. One end of the clearance slider 8331 is assembled with a tension spring 502, and the other end of the tension spring 502 is directly or indirectly assembled with the first box plate 421. The tension spring 502 applies a spring force to the clearance slider 8331 to pull it away from the first rotating shaft 831.

[0077] The second rotating shaft 832 is mounted on the wheel seat 450 and fixedly assembled with the wheel 451. The wheel seat 450 is fitted onto the wheel screw 452 and assembled with it by threaded engagement. The threads of the two wheel seats 450 and the wheel screw 452 are opposite in direction, and the wheel seats 450 are directly or indirectly engaged or slidably assembled with the first box plate 421. The wheel screw 452 is rotatably mounted on the first box plate 421 but cannot move axially. The wheel screw 452 is connected to the wheel motor shaft 561 through the wheel belt 840 to form a belt drive mechanism. The wheel motor shaft 561 is installed inside the wheel motor 560, and the wheel motor 560 is mounted on the second box plate 422. After the wheel motor 560 is started, it can drive the wheel screw 452 to rotate circumferentially, thereby driving the two wheel seats 450 to move synchronously closer or further away, so that the two wheels 451 move closer or further away from the outer wall of the steel pipe 01.

[0078] One of the first rotating shafts 831 passes through the first housing plate 421 and is connected to the output shaft of the rotary motor 570, which is mounted on the second housing plate 422; the other first rotating shaft 831 passes through the first housing plate 421 and is assembled to the input shaft of the rotary encoder 590, which is mounted on the second housing plate 422, thereby enabling the detection of the rotation angle of the corresponding first rotating shaft 831.

[0079] The rotating belt 850 passes around two first rotating shafts 831 and at least one auxiliary belt shaft 851 to form a belt drive mechanism. The auxiliary belt shaft 851 is rotatably mounted on the second box plate 422.

[0080] See Figure 11Initially, the two rotating wheels 451 are positioned furthest from the steel pipe 01, facilitating the steel pipe 01's passage between them and its press against the end bearing 432. During this process, the rotating belt pulls the sliding block 8331 to overcome the spring force of the tension spring, compensating for the displacement of the rotating wheels 451. Then, the rotating wheel motor 560 is activated, driving the two rotating wheels 451 towards the steel pipe 01 until they are pressed against its outer wall. Next, the rotary motor 570 is activated, causing the two first rotating shafts 831 to rotate via the rotating belt 850. These shafts, through the rotating belt 830, drive the rotating wheels 451 to rotate, causing the steel pipe 01 to rotate circumferentially for cutting one revolution. In use, the angle that the first rotating shaft 831 needs to rotate for one revolution of the steel pipe can be measured in advance. The rotary encoder 590 can then detect this angle to determine whether the steel pipe has been completely cut.

[0081] See Figures 1-9 , Figures 16-21 The clamping module 300 includes a clamping frame 310, a lower shell 320, and an upper shell 330. The lower shell 320 is fixedly mounted on the clamping frame 310, which is mounted on the frame 110. One end of the lower shell 320 and the upper shell 330 are hinged together by a hinge shaft 301 so that the upper shell 330 can be rotated and opened relative to the lower shell 320.

[0082] The upper shell 330 is also hinged to one end of the opening and closing electric cylinder shaft 391, and the other end of the opening and closing electric cylinder shaft 391 is installed inside the opening and closing electric cylinder 390. The outer shell of the opening and closing electric cylinder 390 is hinged to the clamping frame 310. After the opening and closing electric cylinder 390 is started, it can drive the opening and closing electric cylinder shaft 391 to extend and retract axially, thereby driving the upper shell 330 to rotate relative to the lower shell 320.

[0083] The upper shell 330 and lower shell 320 are each rotatably mounted with a centering half-disc 350. Each centering half-disc 350 has a centering arc groove 351, and a centering gear 872 is mounted on its outer wall. The centering gear 872 meshes with a centering drive gear 871, which is fitted onto a centering motor shaft 531. The centering motor shaft 531 is installed inside a centering motor 530, which is mounted on a clamping frame 310. When the centering motor 530 is started, it drives the centering drive gear 871 to rotate, thereby rotating the centering half-disc 350. The centering motor shaft 531 is assembled with the input shaft of a centering encoder 790, which is mounted on the clamping frame 310. The rotation angle of the centering motor shaft 531 can be detected by the centering encoder 790, and then the rotation angle of the centering half-disc 350 can be calculated.

[0084] The upper shell 330 and lower shell 320 are respectively equipped with semi-fixed discs 340. The semi-fixed discs 340 are provided with semi-fixed disc grooves 341. The semi-fixed disc grooves 341 are engaged with and slidably assembled with the centering rod 360. The centering rod 360 is equipped with a centering pin 362, and a centering wheel 361 is installed on the end of the centering rod 360 that is inserted into the centering semi-disc 350. The centering pin 362 is engaged with and slidably assembled with the centering arc groove 351. When the centering semi-disc 350 rotates, it will drive the centering rod 360 to move relative to the outer wall of the steel pipe 01 through the centering arc groove 351 so as to clamp or release the steel pipe 01 through the centering wheel 361.

[0085] During the rotation of the centering half-disc 350, the centering encoder 790 detects the rotation angle so that when the centering half-disc 350 is reset, the centering encoder 790 detects the same reverse angle, thus avoiding interference with the opening and closing of the upper shell 330.

[0086] The centering rods 360 are three in number and evenly distributed around the centering half-disc 350, so that the three centering wheels 361 clamp the steel pipe 01 around the circumference of the steel pipe 01 respectively, thereby making the axis of the steel pipe 01, the axis of the centering half-disc 350, and the axis of the radial disk 490 in a straight line, thus realizing the positioning of the steel pipe 01 on the axis (circumferential direction).

[0087] The centering rod 360 is assembled and fixed with the sliding frame 370. The sliding frame 370 is provided with a sliding groove 371. The sliding groove 371 engages with and slides with the conveying frame block 382. The conveying frame block 382 is installed on the conveying frame 380. The conveying frame 380 is also equipped with a conveying frame shaft 383. One end of the conveying frame shaft 383 is fitted with a conveying spring 503 and passes through the sliding frame 370. The conveying spring 503 provides elastic resistance to the movement of the conveying frame 380 towards the sliding frame 370.

[0088] A conveyor motor 780 is mounted on the conveyor frame 380. The conveyor motor shaft of the conveyor motor 780 is connected to the conveyor wheel shaft 881 via a conveyor belt 880, forming a belt drive mechanism. The conveyor wheel shaft 881 is mounted on the conveyor frame 380, and a conveyor wheel 381 is fitted and fixed on the conveyor wheel shaft 881. In use, the conveyor motor 780 starts and drives the conveyor wheel 381 to rotate. The conveyor wheel 381 can press against the outer wall of the steel pipe 01, thereby driving the steel pipe 01 to move axially to convey the steel pipe to the end module to complete the cutting.

[0089] The cutting module 600 includes an outer frame 610, a transverse frame 620, and a lifting frame 630. The outer frame 610 is mounted on a cutting bracket 150, which is mounted on a machine frame 110. The transverse frame 620 is installed inside the outer frame 610, and transverse frame slide rails 611 are respectively installed at the upper and lower ends of the outer frame 610 and the transverse frame slide rails 611 engage and slide with corresponding transverse frame sliders 621. The transverse frame sliders 621 are mounted on the transverse frame 620. A transverse movement block 623 is provided on the outer frame 610. The transverse movement block 623 is fitted onto the transverse movement screw 613 and is screwed onto it. The transverse movement screw 613 can rotate circumferentially and cannot be fixed axially on the outer frame 610. One end of the transverse movement screw 613 is connected to the transverse motor shaft of the transverse motor 720. The transverse movement block 623 is also assembled with a transverse movement input shaft 711, which is installed inside a transverse movement displacement sensor 710. The transverse movement displacement sensor 710 and the transverse motor 720 are both mounted on the outer frame 610. After the transverse motor 720 is started, it can drive the transverse movement screw 613 to rotate circumferentially, thereby driving the transverse movement block 623 (transverse movement frame 620) to move along the transverse movement slide rail 172. The transverse movement block 623 drives the transverse movement input shaft 711 to move, so that the transverse movement displacement sensor 710 can detect the transverse displacement of the transverse movement frame 620.

[0090] The transverse frame 620 is equipped with a lifting cylinder 730, a lifting displacement sensor 740, and a lifting optical shaft 622. The lifting cylinder shaft 731 of the lifting cylinder 730 and the lifting input shaft 741 of the lifting displacement sensor 740 are respectively assembled with the lifting frame 630. The lifting frame 630 is equipped with a guide tube 631 and a longitudinal slide rail 632. The guide tube 631 is axially slidably fitted onto the lifting optical shaft 622. The longitudinal slide rail 632 is axially slidably fitted onto a cutting slide rail 771, which is mounted on a cutting head 770. The cutting head 770 is also assembled and fixed with the longitudinal cylinder shaft 761 of the longitudinal cylinder 760 and the longitudinal input shaft 751 of the longitudinal displacement sensor 750. Both the longitudinal cylinder 760 and the longitudinal displacement sensor 750 are mounted on the lifting frame 630. In use, the lifting cylinder 730 is activated to drive the lifting frame 630 to lift and lower the cutting head 770, and the longitudinal cylinder 760 is activated to drive the cutting head 770 to move closer to or further away from the steel pipe at the processing station. The lifting displacement sensor 740 and the longitudinal displacement sensor 750 are used to detect the lifting displacement and longitudinal movement displacement of the cutting head 770, respectively. This design is mainly to achieve three-axis adjustment of the cutting head 770 to accommodate steel pipes of different outer diameters. In this embodiment, the cutting head 770 is selected from the laser cutting head of a laser cutting machine.

[0091] The usage process of this embodiment is roughly as follows:

[0092] S1. In the initial state, the end module 400 is located at the end furthest from the corresponding clamping module 300 to avoid interfering with the loading of the steel pipe 01. The upper shell 330 of the clamping module 300 remains open, as... Figures 17-18 To avoid interfering with the loading of steel pipe 01.

[0093] S2. Release the steel pipe 01 from the feeding rack 120. The steel pipe 01 rolls onto the receiving assembly 200. Then close the upper shell 330 and start the centering motor 530 so that the conveying wheel 381 and the centering wheel 361 press against the steel pipe 01 to achieve the initial positioning of the steel pipe 01 on the axis.

[0094] S3. The end module 400 moves toward the end of the steel pipe 01 until it reaches the preset position.

[0095] S4. Start the conveyor motor 780, and the steel pipe 01 is conveyed to the end module 400 by the rotation of the conveyor wheel 381 until the collision switch 550 is triggered.

[0096] S5. Start the radial motor 580, so that the end roller 481 is pressed against the outer wall of the steel pipe 01 to complete the positioning of the axis of the steel pipe 01. Start the rotary motor 560 to drive the two rotary rollers 451 to press against the outer wall of the steel pipe 01.

[0097] S6. Adjust the cutting head 770 as needed and prepare to start the cutting head 770 to begin cutting. At the same time, the rotary motor 570 drives the rotating wheel 451 to rotate, thereby driving the steel pipe 01 to rotate in a circle to complete one revolution of the steel pipe 01 to cut the steel pipe. The cut steel pipe segment falls onto the guide chute 140 for output.

[0098] S7. Reverse the rotary motor 560 and radial motor 580 by a certain angle to release the cut steel pipe segment. Then start the conveyor motor 780 to convey the steel pipe 01 to the end module until the collision switch is triggered. Start the rotary motor 560 and radial motor 580 so that the rotary wheel 451 and end roller 481 return to pressing against the outer wall of the steel pipe 01, and then start the next cut, and so on.

[0099] Any aspects of this invention not described in detail are well-known to those skilled in the art.

[0100] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A full-automatic steel pipe cutting machine suitable for various outer diameters, characterized in that: The cutting part is installed on the rack and cuts the steel pipe; The cutting part includes at least one clamping module and at least one cutting module, the clamping module is used for clamping, axis centering and conveying the steel pipe to the end module, and the cutting module cuts the steel pipe through a cutting head to complete the cutting of the steel pipe; The clamping module includes a clamping frame, a lower shell and an upper shell, the lower shell is fixedly installed on the clamping frame, the clamping frame is installed on the rack, and the upper shell is assembled with the lower shell; The upper shell and the lower shell are respectively provided with a centering half disc, the centering half disc is provided with a centering arc groove, and a centering gear is further installed on the outer wall of the centering half disc, the centering gear is in meshing transmission with a centering driving tooth, the centering driving tooth is sleeved on a centering motor shaft, the centering motor shaft is installed in a centering motor, and the centering motor is installed on the clamping frame; The upper shell and the lower shell are respectively provided with a half fixing disc, the half fixing disc is provided with a half fixing disc groove, the half fixing disc groove is in clamping and sliding assembly with a centering rod, the centering rod is provided with a centering pin, one end of the centering rod installed in the inside of the centering half disc is provided with a centering wheel, the centering pin is clamped into and in sliding assembly with the centering arc groove, and the centering rod has at least two and is uniformly distributed in the circumferential direction of the centering half disc; The centering rod is directly or indirectly assembled with a conveying frame, the conveying frame is provided with a conveying motor, a conveying motor shaft of the conveying motor is connected with a conveying wheel shaft through a conveying belt and constitutes a belt transmission mechanism, the conveying wheel shaft is installed on the conveying frame, and the conveying wheel shaft is sleeved and fixed with a conveying wheel.

2. The fully automatic steel pipe cutting machine according to claim 1, characterized in that: One end of the lower shell and the upper shell is hingedly assembled through a hinge shaft, the upper shell is further hingedly connected with one end of an opening and closing cylinder shaft, the other end of the opening and closing cylinder shaft is installed in an opening and closing cylinder, and the shell of the opening and closing cylinder is hingedly connected with the clamping frame.

3. The fully automatic steel pipe cutting machine according to claim 1, characterized in that: The centering rod is assembled with a sliding frame, the sliding frame is provided with a sliding groove, the sliding groove is in clamping and sliding assembly with a conveying frame block, the conveying frame block is installed on the conveying frame, the conveying frame is provided with a conveying frame shaft, one end of the conveying frame shaft is sleeved with a conveying spring and then penetrates through the sliding frame, and the conveying spring provides elastic resistance for the movement of the conveying frame to the sliding frame.

4. A fully automatic steel tube cutting machine as in any claim from 1 to 3, characterized in that: The centering motor shaft is assembled with an input shaft of a centering encoder, and the centering encoder is installed on the clamping frame.

5. The fully automatic steel pipe cutting machine according to any one of claims 1 to 3, characterized in that: The cutting part further includes at least one material receiving assembly, and the material receiving assembly is used for receiving the incoming steel pipe; The material receiving assembly includes a material receiving table, a material receiving seat, a material receiving bottom plate, a material receiving side plate and a material receiving screw, the material receiving table is installed on the rack, the material receiving seat is installed on the material receiving table, the material receiving table is provided with a material receiving sliding groove, the material receiving sliding groove is in clamping and sliding assembly with a material receiving sliding block, and the material receiving sliding block is arranged on the material receiving side plate; The material receiving side plate is sleeved on the material receiving screw and is in threaded screwing assembly with the material receiving screw, the material receiving screw is installed on the material receiving seat, and the material receiving sliding block or the material receiving side plate is assembled with one end of a material receiving input shaft.

6. The fully automatic steel pipe cutting machine according to any one of claims 1 to 3, characterized in that: The full-automatic steel pipe cutting machine further includes an end module, and the end module is used for detecting whether the steel pipe is tightly positioned and rotating the steel pipe. The end module comprises an end frame, an end box and an end cylinder, the end cylinder and the end frame are installed on the frame, the end frame is provided with an end sliding shaft, the end box is sleeved on the end sliding shaft and assembled with the end sliding shaft, the end cylinder shaft of the end cylinder is assembled with the end box; The end box comprises a first box plate and a second box plate, the first box plate is assembled with a fixed disc, the fixed disc is provided with a fixed disc groove, the fixed disc groove is engaged and slidably assembled with a radial rod, one end of the radial rod entering the inside of the fixed disc is provided with an end roller, the radial rod is further provided with a radial rod pin, the radial rod pin is engaged and slidably assembled in a radial arc groove, the radial arc groove is arranged on a radial disc, the radial disc is externally sleeved with a radial gear, the radial gear is engaged and driven with a radial driving tooth, the radial driving tooth is sleeved and fixed on a radial motor shaft, the radial motor shaft is assembled in a radial motor, and the radial motor is installed on the second box plate.

7. The fully automatic steel pipe cutting machine according to claim 6, characterized in that: The end box further comprises a third box plate, the third box plate is provided with a collision switch, a signal of the collision switch is connected to an industrial computer, and a triggering end of the collision switch is opposite to an end of a triggering shaft, one end of the triggering shaft passes through the second box plate, is sleeved with a triggering spring and is assembled with a shaft ring of an end face bearing, and a seat ring of the end face bearing is in pressure contact with an end of the steel pipe.

8. The fully automatic steel pipe cutting machine according to claim 6, characterized in that: The first box plate is further provided with two rotating wheel assemblies, the rotating wheel assembly comprises a let-go slide rail, the let-go slide rail is provided with a let-go slide groove, the let-go slide groove is engaged and slidably assembled with a let-go sliding block, the let-go sliding block is provided with a third rotating shaft, a rotating belt is wound around the first rotating shaft, the second rotating shaft and the third rotating shaft to form a belt transmission mechanism, the let-go sliding block is assembled with one end of a tension spring, the other end of the tension spring is directly or indirectly assembled with the first box plate, and the tension spring applies an elastic force to the let-go sliding block to pull it away from the first rotating shaft; The second rotating shaft is installed on a rotating wheel seat and is assembled and fixed with a rotating wheel, the rotating wheel seat is sleeved on a rotating wheel screw and is assembled and fixed with the rotating wheel screw through thread engagement, the threads of the two rotating wheel seats and the rotating wheel screw are opposite in rotation direction, and the rotating wheel seat is directly or indirectly engaged and slidably assembled with the first box plate, the rotating wheel screw is installed on the first box plate, the rotating wheel screw is connected with a rotating wheel motor shaft through a rotating wheel belt to form a belt transmission mechanism, the rotating wheel motor shaft is assembled in a rotating wheel motor, and the rotating wheel motor is installed on the second box plate; One of the first rotating shafts passes through the first box plate and is connected with an output shaft of a rotating motor, and the rotating motor is installed on the second box plate; the other first rotating shaft passes through the first box plate and is assembled with an input shaft of a rotating encoder, and the rotating encoder is installed on the second box plate; The rotating wheel belt is wound around the two first rotating shafts and at least one auxiliary belt shaft to form a belt transmission mechanism, and the auxiliary belt shaft is installed on the second box plate.

9. The fully automatic steel pipe cutting machine according to any one of claims 1 to 3, characterized in that: The cutting module comprises an outer frame, a transverse frame and a lifting frame, the outer frame is installed on a cutting support, the cutting support is installed on a rack, the transverse frame is installed in the outer frame, and the outer frame is installed with transverse frame sliding rails at the upper and lower ends of the transverse frame, the transverse frame sliding rails are matched with corresponding transverse frame sliding blocks and are assembled by sliding, the transverse frame sliding blocks are installed on the transverse frame, the transverse frame blocks are installed on the transverse screw and are assembled by screwing, the transverse screw is installed on the outer frame, and one end of the transverse screw is connected with a transverse motor shaft of the transverse motor; the transverse frame blocks are also assembled with a transverse input shaft, the transverse input shaft is installed in a transverse displacement sensor, the transverse displacement sensor and the transverse motor are installed on the outer frame; The transverse frame is installed with a lifting electric cylinder, a lifting displacement sensor and a lifting optical shaft, respectively, a lifting electric cylinder shaft of the lifting electric cylinder and a lifting input shaft of the lifting displacement sensor are assembled with a lifting frame, respectively, the lifting frame is installed with a guide pipe and a longitudinal sliding rail, the guide pipe is axially slidably sleeved on the lifting optical shaft; The longitudinal sliding rail is axially slidably sleeved on a cutting sliding rail, the cutting sliding rail is installed on a cutting head, the cutting head is also assembled with a longitudinal electric cylinder shaft of a longitudinal electric cylinder and a longitudinal input shaft of a longitudinal displacement sensor, and is fixed, the longitudinal electric cylinder and the longitudinal displacement sensor are installed on the lifting frame.

10. The fully automatic steel pipe cutting machine according to any one of claims 1 to 3, characterized in that: The full-automatic steel pipe cutting machine further comprises a feeding frame, the feeding frame is installed on the rack and sequentially feeds the steel pipes to the cutting part; the feeding frame is further installed with a first discharging plate and a second discharging plate, the second discharging plate is used for blocking the steel pipes on the feeding frame, and the first discharging plate is used for blocking a steel pipe between the first discharging plate and the second discharging plate.

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