Steel pipe cutting device

Abstract

The invention discloses a steel pipe cutting device, relates to the technical field of steel pipe cutting, and solves the technical problems that the quality of notches of an existing device is uneven, special-shaped notches are difficult to cut, and use requirements are difficult to meet. The steel pipe cutting device comprises a clamping assembly and a cutting assembly, the clamping assembly is arranged on a cutting frame in a sliding mode, the cutting assembly comprises a supporting frame, and the supporting frame is arranged above the cutting frame in a lifting mode and can move in the direction of a steel pipe; the first rotating part is arranged in the supporting frame, and a steel pipe can penetrate through the first rotating part; the cutting gun is arranged on the first rotating piece; the pitching adjusting part is arranged between the supporting frame and the first rotating part and used for adjusting the pitching angle of the first rotating part, and the cutting device has the advantages that special-shaped notches can be cut, and the notch quality is high.

Description

Technical Field

[0001] This invention belongs to the field of steel pipe cutting technology, and specifically relates to a steel pipe cutting device. Background Technology

[0002] Steel pipe is a long strip of steel with a hollow cross-section and a length much greater than its diameter or circumference. Steel pipes are generally made from steel as raw material through processes such as hot rolling, cold rolling, and welding. Its core feature is its hollow structure, which gives it unique advantages in conveying fluids and bearing structural loads. Steel pipe cutting is an important part of steel pipe production. It refers to the process of separating steel pipes into preset dimensions and shapes through physical, thermal, or cold working methods. The core objective is to minimize damage to the performance of the steel pipe while ensuring accuracy and efficiency.

[0003] Steel pipe cutting devices are the main equipment for cutting steel pipes. Common steel pipe cutting devices include mechanical cutting, thermal cutting, and cold cutting. Mechanical cutting achieves cutting through mechanical contact between a cutting tool and the steel pipe, such as traditional circular saws. Thermal cutting involves using a high-temperature heat source to locally melt the steel pipe, thus achieving cutting. Cold cutting involves cutting at low temperatures with no heat-affected zone, such as waterjet cutting machines. However, existing steel pipe cutting devices often fail to meet usage requirements due to inconsistent cut quality and difficulty in producing irregularly shaped cuts. Summary of the Invention

[0004] This invention discloses a steel pipe cutting device, which aims to solve the technical problem that the existing devices have inconsistent cutting quality and difficulty in cutting irregular shapes, thus failing to meet the needs of use.

[0005] To solve the aforementioned technical problems, the present invention adopts the following technical solution: A steel pipe cutting device includes a clamping assembly and a cutting assembly. The clamping assembly is slidably mounted on a cutting frame, and the cutting assembly includes: A support frame, which can be raised and lowered above the cutting frame and can move along the direction of the steel pipe; A first rotating component is disposed within the support frame, and a steel pipe can pass through the first rotating component; A cutting gun, wherein the cutting gun is mounted on the first rotating member; A pitch adjustment component is provided between the support frame and the first rotating component, and is used to adjust the pitch angle of the first rotating component.

[0006] In this invention, after the steel pipe is conveyed to the cutting frame, it will first pass through the clamping assembly and then through the cutting assembly. The conveying of the steel pipe will be stopped at a suitable position. The clamping assembly will clamp and fix the steel pipe to prevent it from shaking during the cutting process and affecting the cutting quality. Moreover, the clamping assembly is a synchronous clamping mechanism that clamps the steel pipe from multiple angles at the same time, so as to achieve the centering of the steel pipe before cutting, thereby further improving the cutting quality. Furthermore, in this invention, the cutting assembly can move and adjust at multiple angles. On one hand, by moving along the direction of the steel pipe, it can cut out uneven slits when the steel pipe rotates. On the other hand, the cutting gun can rotate independently, making the cutting more flexible and suitable for cutting complex slits. Finally, the pitch adjustment component can adjust the pitch angle of the first rotating component, which can adjust the angle between the cutting gun and the steel pipe, thereby cutting steel pipes with inclined slits according to actual needs. Therefore, the above three directions work together to achieve the cutting of irregular slits. Secondly, in this invention, a thermal cutting method can be used, in which a cutting gun generates high temperature to cut the steel pipe.

[0007] Preferably, a lifting platform is provided below the cutting frame. The lifting platform includes a table and a lifting component located at the lower end of the table. The support frame is located on the lifting platform.

[0008] After adopting this technical solution, it should be noted that the lifting component can be any lifting device, such as a hydraulic rod or an electric actuator. The lifting component drives the lifting platform to move up and down, thereby adjusting the position of the cutting gun.

[0009] Preferably, the pitch adjustment assembly includes: The third motor is horizontally arranged within the support frame, and the third motor is located above or below the first rotating component. A lead screw is connected to the output shaft of the third motor, and a fourth slider is provided on the lead screw, one end of which is slidably connected to the support frame; A connecting rod, the two ends of which are respectively hinged to one end of the fourth slider and one end of the first rotating member; The connecting shaft is provided on both sides of the first rotating member, and the connecting shaft is rotatably connected to the inner wall of the support frame.

[0010] After adopting this technical solution, it should be noted that a slide rail is provided on the inner wall of the support frame corresponding to the fourth slider. The upper or lower end of the fourth slider is slidably engaged with the slide rail. The pitch adjustment component provided in this invention drives the lead screw to rotate through the third motor. Based on the threaded connection between the fourth slider and the lead screw and the sliding engagement between the fourth slider and the slide rail, the rotation of the lead screw is converted into the movement of the fourth slider. The movement of the fourth slider will pull the connecting rod to produce tilt. Since the first rotating component has a rotational connection with the support frame through the connecting shaft, the first rotating component will tilt along the tilt direction of the connecting rod, thereby realizing the adjustment of the pitch angle of the first rotating component. In addition, elongated holes are provided on the inner walls of both sides of the support frame. One end of the connecting shaft can be rotatably placed in the elongated hole and can move along the elongated hole to leave space for the tilting of the first rotating component.

[0011] Preferably, the first rotating member includes: An inner box is disposed within the support frame, and one end of the connecting rod is hinged to the inner box, and the connecting rod is connected to the inner box; A first motor is mounted on the inner box, and a first drive gear is connected to the output shaft of the first motor. An adjusting gear is located inside the inner box and is rotatably connected to the inner wall of the inner box on one side. The first driving gear meshes with the adjusting gear, and the cutting gun is located on the inner wall of the adjusting gear.

[0012] After adopting this technical solution, it should be noted that the inner box and the support frame are provided with through holes at both ends of the steel pipe for the steel pipe to pass through. In this invention, the first motor drives the adjusting gear to rotate, thereby realizing the circumferential rotation of the cutting gun along the steel pipe. This can increase efficiency for cutting straight cuts or other irregular cuts. The first motor can be a geared motor.

[0013] Preferably, the clamping assembly includes: The mounting box includes a support plate inside, and a second rotating component and a connecting ring are sequentially connected to one side of the support plate. The connecting ring is rotatably connected to the inner wall of the mounting box. A linkage component is slidably disposed on the side of the support disk away from the rotating structure; A pusher is disposed on the support plate and connected to the linkage component, driving the linkage component to retract and clamp.

[0014] After adopting this technical solution, it should be noted that the mounting box is set on the cutting frame. Considering that whether it is a round or square steel pipe, if the axis of the steel pipe deviates from the cutting center of the cutting component during cutting, it will result in an uneven cut shape, which will affect the cut quality. Therefore, in this invention, by setting a linkage component and providing power through the pusher, the linkage component can simultaneously clamp the steel pipe at multiple angles, so that the steel pipe can be automatically centered during the clamping process. Thus, it is only necessary to keep the clamping component and the cutting component aligned to achieve overall centering, thereby improving the cutting quality of the steel pipe.

[0015] Preferably, the linkage component includes: A first slider, which is connected to the pusher; Two second sliders are respectively located on both sides of the first slider; A third slider, wherein the third slider is disposed opposite to the first slider; The sliders are slidably connected by a sliding rod, and the first slider, the second slider and the third slider are all provided with clamping rings on their inner sides.

[0016] After adopting this technical solution, it should be noted that it is preferable to set up synchronous clamping in four directions. Guide rails are set on the support plate every 90° for sliding connection with the slider. The principle of the linkage component is as follows: the first slider is pushed inward along the guide rail by the pusher. The movement of the first slider will drive the adjacent slider to slide. The sliding of the slider will drive the second slider to slide synchronously. Finally, the remaining three sliders are synchronously contracted, thereby synchronously clamping the steel pipe.

[0017] Preferably, the first slider is provided with a first groove and a second groove, the included angle between the first groove and the second groove is 90° and they are staggered in the direction of the steel pipe, and the first groove and the second groove penetrate through the two side walls of the first slider. Both the second slider and the third slider are provided with corresponding first and second grooves.

[0018] After adopting this technical solution, it should be noted that, taking the first slider as an example, a sliding rod is slidably provided in both the first and second sliding grooves, and the first and second sliding grooves on the second slider adjacent to the first slider are offset and oppositely arranged. Specifically, if the first sliding groove of the first slider is located on the side away from the cutting component and the second sliding groove is located on the side close to the cutting component, then the first sliding groove on the second slider is located on the side close to the cutting component and the second sliding groove is located on the side away from the cutting component. Therefore, the tilt direction and setting position of the first and second sliding grooves of the first and third sliders are consistent, and the first and second sliding grooves of the two second sliders are consistent. In addition, the included angle between the first and second sliding grooves is a preferred degree, which makes its support and connection sliding effect better.

[0019] Preferably, the second rotating member includes: The second motor is located on the inner wall of the mounting box, and a second drive gear is connected to its output shaft; A rotating gear is connected to the support disk on one side, and the rotating gear meshes with the second drive gear.

[0020] After adopting this technical solution, it should be noted that the rotating gear is located on the outside of the connecting ring and is connected to the support plate. Its rotation structure and principle are consistent with the meshing of the first motor driving the first drive gear and the adjusting gear, which will not be elaborated here. The connecting ring has two functions: first, to support the support plate and rotate with it when the second motor drives the second drive gear; second, to support and guide the steel pipe in certain situations, specifically when the outer diameter or circumscribed circle diameter of the steel pipe is small in difference from the inner diameter of the connecting ring.

[0021] Preferably, the device also includes a length-fixed component, which comprises: A sliding plate, the two sides of which are slidably connected to the cutting frame, and a vertical limiting plate is provided on the sliding plate.

[0022] After adopting this technical solution, it should be noted that the length of the steel pipe is limited by the limiting plate, and the length-fixing component is used to calibrate the cutting length of the steel pipe. The length from the cutting gun to the outside of the support frame is the known length at the time of manufacturing. The length-fixing component abuts against the support frame in the default state. Therefore, the distance that the length-fixing component slides on the cutting frame plus the length from the cutting gun to the outside of the support frame is the cutting length of the steel pipe. Furthermore, in this invention, a first linear module is provided on both sides of the cutting frame, and the two sides of the sliding plate are connected to the first linear module, so that the sliding plate can be driven to slide by the first linear module.

[0023] Preferably, the transmission component is also included, the transmission component comprising: A conveyor frame, one end of which is connected to the cutting frame; Conveyor roller assembly, wherein the conveyor frame is provided with multiple conveyor roller assemblies, each of the conveyor roller assemblies being V-shaped; A pusher is slidably mounted on a conveyor frame, and the pusher pushes the steel pipe to move.

[0024] After adopting this technical solution, it should be noted that the V-shaped roller assembly can increase the contact area with the steel pipe, thereby achieving stable movement of the steel pipe. In addition, the pushing component includes a second linear module set on the conveyor frame and a push plate connected to the second linear module, wherein the push plate is located at the upper end of the V-shaped roller.

[0025] Preferably, a height adjustment component is further provided between the conveyor frame and the conveyor roller assembly, the height adjustment component comprising: A rotating shaft is mounted on the conveyor frame along the direction of the steel pipe via a bracket. The third drive gear, and the rotating shaft is provided with a plurality of the third drive gears; The meshing rod is provided at the lower end of the conveying roller assembly, and the meshing rod meshes with the third drive gear; A driving component, which is connected to one end of the rotating shaft.

[0026] After adopting this technical solution, it should be noted that a protective box corresponding to the number of conveyor rollers is provided inside the conveyor component. The rotating shaft passes through the protective box, and one end of the meshing rod passes through the protective box and meshes with the third drive gear. The third drive gear is located inside the protective box. The drive component can be driven by a motor or manually rotated by a turntable. The meshing rod has meshing teeth along the axial direction. The third drive gear meshes with the meshing teeth. By rotating the rotating shaft, the third drive gear is driven to rotate, which in turn drives the meshing rod to move up and down. The up and down movement of the meshing rod drives the conveyor roller assembly to move up and down, so that when cutting steel pipes of different diameters, the steel pipe, clamping assembly and cutting assembly can be made concentric by adjustment.

[0027] Preferably, the lower end of the fixed-length component is provided with a feeding component, the feeding component comprising: A feeding plate, which is inclinedly arranged on the cutting frame; A receiving bin is located on one side of the cutting frame, and one end of the unloading plate is connected to the receiving bin.

[0028] After adopting this technical solution, it should be noted that after the cutting is completed, the clamping component releases its grip on the steel pipe. At this time, the first linear module moves away from the cutting component, and the pusher pushes the steel pipe forward, so that the cut end of the steel pipe falls onto the unloading plate and rolls from the unloading plate into the receiving bin, thereby realizing the collection of the cut steel pipe.

[0029] Preferably, the cutting frame is provided with a protective cover, one end of which is hinged to the cutting frame, and the other end of which can be snapped onto the other side of the cutting frame.

[0030] After adopting this technical solution, it should be noted that the use of a protective cover is an existing technology, and its purpose is to prevent the steel pipe from flying out and injuring people under certain abnormal circumstances.

[0031] Preferably, both the cutting frame and the conveying frame are made of steel structure.

[0032] The workflow of this invention: Feeding: The steel pipe is placed on the conveyor roller assembly, and the pusher is pushed by the second linear module, which in turn pushes the tail end of the steel pipe to move forward along the conveyor roller assembly; Fixed length: Adjust the distance between the limiting plate and the support frame to the required length of the steel pipe to be cut using the first linear module; Clamping and Cutting: The pusher pushes the steel pipe through the cutting assembly, and controls the pusher to push the first slider, which in turn causes the first, second, and third sliders to retract inward simultaneously, thereby clamping and fixing the steel pipe with the clamping ring. The cutting gun is started, and the lifting platform is raised and lowered according to the cutting requirements, or the cutting gun is moved along the direction of the steel pipe by the first linear module, or the fourth slider is driven by the third motor to slide along the lead screw to adjust the pitch angle of the inner box, thereby cutting irregular cuts according to the cutting requirements. The clamping assembly releases its grip on the steel pipe, and the first linear module moves away from the cutting assembly. The pusher pushes the steel pipe forward, so that the cut end of the steel pipe falls onto the unloading plate and rolls into the receiving bin, realizing the collection of the cut steel pipe. Subsequently, the first linear module returns to its original position, and the pusher pushes the steel pipe until the end of the steel pipe abuts against the limiting plate. The subsequent process is a repetition of the above process.

[0033] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The present invention provides a steel pipe cutting device, wherein the cutting component can move and adjust at multiple angles. On the one hand, by moving along the direction of the steel pipe, it can cut out concave and convex slits when the steel pipe rotates. On the other hand, the cutting gun can rotate independently, thereby making the cutting more flexible and suitable for cutting complex slits. Finally, the pitch adjustment component can adjust the pitch angle of the first rotating component, that is, adjust the angle between the cutting gun and the steel pipe, so as to cut steel pipes with inclined slits according to actual needs. The above three components work together to achieve the cutting of irregular slits.

[0034] 2. The steel pipe cutting device provided by the present invention uses a lead screw and slider structure combined with a connecting rod to convert the rotation of the lead screw into the movement of the fourth slider. The movement of the fourth slider will pull the connecting rod to produce tilting. Since the first rotating component is rotatably connected to the support frame through the connecting shaft, the first rotating component will tilt along the tilting direction of the connecting rod, thereby realizing the adjustment of the pitch angle of the first rotating component.

[0035] 3. The steel pipe cutting device provided by the present invention, by setting a first rotating component, drives the adjusting gear to rotate through a first motor, thereby realizing the circumferential rotation of the cutting gun along the steel pipe, which can increase the efficiency for cutting straight cuts or other irregular cuts.

[0036] 4. The steel pipe cutting device provided by the present invention, by setting a clamping component and a linkage component, drives the synchronous movement of two second sliders and a third slider through the movement of the first slider, thereby driving the clamping ring to clamp synchronously, realizing automatic centering of the steel pipe, which is beneficial to improving the cutting quality.

[0037] 5. The present invention provides a steel pipe cutting device, which adjusts the cutting length of the steel pipe by setting a fixed length component and changing the distance between the limiting plate and the support frame.

[0038] 6. The steel pipe cutting device provided by the present invention, by setting a height adjustment component, drives the third drive gear to rotate by rotating the shaft, and then drives the meshing rod to move up and down. The up and down movement of the meshing rod drives the transmission roller group to move up and down, so that when cutting steel pipes of different diameters, the steel pipe, clamping component and cutting component can be made concentric by adjustment. Attached Figure Description

[0039] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the cutting component of the present invention; Figure 3 This is a schematic diagram of the structure of the first rotating component of the present invention; Figure 4 This is a schematic diagram of the clamping component structure of the present invention; Figure 5 This is a schematic diagram of the clamping component of the present invention from another perspective; Figure 6 This is a cross-sectional view of the clamping assembly of the present invention; Figure 7 This is a schematic diagram of the height adjustment component and conveyor roller assembly of the present invention; Figure 8 This is a schematic diagram of the connection between the height adjustment component and the conveyor roller assembly of the present invention. Figure Labels

[0040] 1-Conveyor frame, 2-Cutting frame, 3-Clamping assembly, 301-Mounting box, 302-Support plate, 303-Pushing component, 304-First slider, 305-Second slider, 306-Third slider, 307-Slide rod, 308-Clamping ring, 309-Connecting ring, 310-Second drive gear, 311-Rotating gear, 312-Guide ring, 313-Second motor, 4-Cutting assembly, 401-Support frame, 402-Third motor, 403-Lead screw, 404-Fourth slider, 405-Connecting rod, 406-Inner box, 407-Connecting shaft, 408-First motor, 409-First Drive gear, 410-Adjusting gear, 411-Cutting gun, 5-Lifting platform, 501-Tabletop, 502-Lifting component, 6-Length-fixing component, 601-Sliding plate, 602-Limiting plate, 603-First linear module, 7-Unloading component, 701-Unloading plate, 702-Receiving bin, 8-Transmitting roller assembly, 801-Roller, 802-First support, 9-Height adjustment component, 901-Rotating shaft, 902-Protective box, 903-Drive component, 904-Second support, 905-Third drive gear, 906-Fastening ring, 907-Meshing rod, 908-Fixing rod, 909-Base plate. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0042] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship conventionally placed when the invention is used. They are only for the convenience of describing this application 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 application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Example 1

[0043] A steel pipe cutting device, such as Figure 1 , Figure 2 As shown, it includes a clamping assembly 3 and a cutting assembly 4. The clamping assembly 3 is slidably disposed on the cutting frame 2, and the cutting assembly 4 includes: Support frame 401, which can be raised and lowered above the cutting frame 2 and can move along the direction of the steel pipe; The first rotating component is disposed within the support frame 401, and the steel pipe can pass through the first rotating component; A cutting gun 411 is mounted on the first rotating member; A pitch adjustment component is provided between the support frame 401 and the first rotating component, and is used to adjust the pitch angle of the first rotating component.

[0044] A lifting platform 5 is provided below the cutting frame 2. The lifting platform 5 includes a table 501 and a lifting component 502 located at the lower end of the table 501. The support frame 401 is located on the lifting platform 5. The lifting component 502 can be any lifting device, such as a hydraulic rod or an electric actuator. In this embodiment, an electric actuator is used. The lifting platform 5 is moved up and down by the lifting component 502, thereby adjusting the position of the cutting gun 411.

[0045] In this embodiment, thermal cutting is used. The steel pipe is cut by the high temperature generated by the cutting gun 411. After the steel pipe is conveyed to the cutting frame 2, it first passes through the clamping assembly 3 and then through the cutting assembly 4. The conveying of the steel pipe is stopped at a suitable position. The clamping assembly 3 clamps and fixes the steel pipe to prevent it from shaking during the cutting process and affecting the cutting quality. The clamping assembly 3 is a synchronous clamping mechanism that clamps the steel pipe from multiple angles at the same time, realizing the centering of the steel pipe before cutting, thereby further improving the cutting quality. The cutting assembly 4 can move and adjust the angle at multiple angles. On the one hand, by moving along the direction of the steel pipe, it can cut out uneven cuts when the steel pipe rotates. On the other hand, the cutting gun 411 can rotate independently, making the cutting more flexible and suitable for cutting complex cuts. Finally, the pitch adjustment component can adjust the pitch angle of the first rotating component, that is, adjust the angle between the cutting gun 411 and the steel pipe, so that steel pipes with inclined cuts can be cut according to actual needs. Therefore, the above three directions work together to realize the cutting of irregular cuts. Example 2

[0046] The difference between this embodiment and Embodiment 1 is that, as Figure 2 , Figure 3 As shown, the pitch adjustment assembly includes: The third motor 402 is horizontally arranged inside the support frame 401, and the third motor 402 is located above or below the first rotating member. A lead screw 403 is connected to the output shaft of the third motor 402. A fourth slider 404 is provided on the lead screw 403, and one end of the fourth slider 404 is slidably connected to the support frame 401. A connecting rod 405, the two ends of which are respectively hinged to one end of the fourth slider 404 and one end of the first rotating member; The connecting shaft 407 is provided on both sides of the first rotating member, and the connecting shaft 407 is rotatably connected to the inner wall of the support frame 401.

[0047] The first rotating member includes: Inner box 406, the inner box 406 is disposed inside the support frame 401, and one end of the connecting rod 405 is hinged to the inner box 406, the connecting rod 405 is connected to the inner box 406; A first motor 408 is mounted on the inner box 406, and a first drive gear 409 is connected to the output shaft of the first motor 408. An adjusting gear 410 is disposed inside the inner box 406 and is rotatably connected to the inner wall of the inner box 406 on one side. The first driving gear 409 meshes with the adjusting gear 410, and the cutting gun 411 is disposed on the inner wall of the adjusting gear 410.

[0048] In this embodiment, a slide rail is provided on the inner wall of the support frame 401 corresponding to the fourth slider 404. The upper or lower end of the fourth slider 404 is slidably engaged with the slide rail. This pitch adjustment assembly drives the lead screw 403 to rotate through the third motor 402. Based on the threaded connection between the fourth slider 404 and the lead screw 403 and the sliding engagement between the fourth slider 404 and the slide rail, the rotation of the lead screw 403 is converted into the movement of the fourth slider 404. The movement of the fourth slider 404 will pull the connecting rod 405 to tilt. Since the first rotating member has a rotational connection with the support frame 401 through the connecting shaft 407, the first rotating member will tilt along the tilting direction of the connecting rod 405, thereby realizing the adjustment of the pitch angle of the first rotating member. In addition, elongated holes are provided on the inner walls of both sides of the support frame 401. One end of the connecting shaft 407 can be rotatably disposed in the elongated hole and can move along the elongated hole to leave space for the tilting of the first rotating member. Secondly, in this embodiment, the inner box 406 and the support frame 401 are both provided with through holes for the steel pipe to pass through at both ends. In this invention, the first motor 408 drives the adjusting gear 410 to rotate, thereby realizing the circumferential rotation of the cutting gun 411 along the steel pipe, which can increase efficiency for cutting straight cuts or other irregular cuts. Example 3

[0049] The difference between this embodiment and Embodiment 2 is that, Figures 4-6 As shown, the clamping assembly 3 includes: Mounting box 301, the mounting box 301 is provided with a support plate 302, a second rotating member and a connecting ring 309 are sequentially connected to one side of the support plate 302, and the connecting ring 309 is rotatably connected to the inner wall of the mounting box 301; A linkage component is slidably disposed on the side of the support disk 302 away from the rotating structure; A pusher 303 is disposed on the support plate 302 and connected to the linkage component, driving the linkage component to retract and clamp.

[0050] In this embodiment, the mounting box 301 is mounted on the cutting frame 2. Considering that whether it is a round or square steel pipe, if the axis of the steel pipe deviates from the cutting center of the cutting component 4 during cutting, the cut shape will be uneven, which will affect the cut quality. Therefore, in this invention, by setting a linkage component and providing power through the pusher 303, the linkage component can clamp the steel pipe synchronously at multiple angles, so that the steel pipe can be automatically centered during the clamping process. Thus, it is only necessary to keep the clamping component and the cutting component 4 aligned to achieve overall centering and improve the cutting quality of the steel pipe. Example 4

[0051] The difference between this embodiment and embodiment 3 is that, as Figure 4 As shown, the linkage component includes: The first slider 304 is connected to the pusher 303; Two second sliders 305 are respectively disposed on both sides of the first slider 304; The third slider 306 is disposed opposite to the first slider 304; Among them, a sliding rod 307 is slidably connected between two adjacent sliders, and clamping rings 308 are provided on the inner sides of the first slider 304, the second slider 305 and the third slider 306.

[0052] The first slider 304 is provided with a first groove and a second groove. The included angle between the first groove and the second groove is 90° and they are staggered in the direction of the steel pipe. The first groove and the second groove penetrate through the two side walls of the first slider 304. Both the second slider 305 and the third slider 306 are provided with corresponding first and second sliding grooves. Taking the first slider 304 as an example, a slide rod 307 is slidably installed in both the first and second sliding grooves. The first and second sliding grooves on the second slider 305 adjacent to the first slider 304 are offset and opposite. Specifically, if the first sliding groove of the first slider 304 is located on the side away from the cutting component 4 and the second sliding groove is located on the side close to the cutting component 4, then the first sliding groove on the second slider 305 is located on the side close to the cutting component 4 and the second sliding groove is located on the side away from the cutting component 4. Therefore, the tilt direction and setting position of the first and second sliding grooves of the first slider 304 and the third slider 306 are consistent, and the first and second sliding grooves of the two second sliders 305 are consistent. In addition, the included angle between the first and second sliding grooves is a preferred degree to improve the support and connection sliding effect.

[0053] In this embodiment, synchronous clamping in four directions is set. Guide rails are set on the support plate 302 every 90° for sliding connection with the sliders. The principle of the linkage component is as follows: the pusher 303 pushes the first slider 304 to move inward along the guide rail. The movement of the first slider 304 will drive the adjacent slide rod 307 to slide. The sliding of the slide rod 307 will drive the second slider 305 to slide synchronously. Finally, the remaining three sliders are synchronously contracted, thereby synchronously clamping the steel pipe. Example 5

[0054] The difference between this embodiment and embodiment 4 is that, as Figures 4-6 As shown, the second rotating member includes: The second motor 313 is located on the inner wall of the mounting box 301, and a second drive gear 310 is connected to its output shaft. Rotating gear 311, one side of which is connected to the support disk 302, meshes with the second drive gear 310.

[0055] In this embodiment, the rotating gear 311 is located on the outside of the connecting ring 309 and is connected to the support plate 302. Its rotation structure and principle are consistent with the meshing of the first drive gear 409 and the adjusting gear 410 driven by the first motor 408, which will not be described in detail here. The connecting ring 309 has two functions: first, to support the support plate 302 and rotate with it when the second motor 313 drives the second drive gear 310 to rotate; second, to support and guide the steel pipe in certain situations, specifically when the outer diameter or circumscribed circle diameter of the steel pipe is small in difference from the inner diameter of the connecting ring 309. Example 6

[0056] The difference between this embodiment and embodiment 5 is that, as Figure 1As shown, it also includes a length-fixing component 6, which includes: A sliding plate 601 is slidably connected to the cutting frame 2 on both sides, and a vertical limiting plate 602 is provided on the sliding plate 601.

[0057] In this embodiment, the length of the steel pipe is limited by the limiting plate 602, and the length fixing component 6 is used to calibrate the cutting length of the steel pipe. The length from the cutting gun 411 to the outside of the support frame 401 is the known length during manufacturing. The length fixing component 6 abuts against the support frame 401 in the default state. Therefore, the distance that the length fixing component 6 slides on the cutting frame 2 plus the length from the cutting gun 411 to the outside of the support frame 401 is the cutting length of the steel pipe. In addition, a first linear module 603 is provided on both sides of the cutting frame 2, and the two sides of the sliding plate 601 are connected to the first linear module 603. The sliding plate 601 is driven to slide by the first linear module 603. Example 7

[0058] The difference between this embodiment and embodiment 6 is that, as Figure 1 , Figure 7 As shown, it also includes a transmission component, which includes: Conveyor frame 1, one end of which is connected to the cutting frame 2; Conveyor roller assembly 8, the conveyor frame 1 is provided with a plurality of conveyor roller assemblies 8, each of the conveyor roller assemblies 8 being V-shaped; A pusher is slidably mounted on the conveyor frame 1, and the pusher pushes the steel pipe to move.

[0059] In this embodiment, the V-shaped roller 801 group can increase the contact area with the steel pipe, thereby realizing the stable movement of the steel pipe. In addition, the pusher 303 includes a second linear module disposed on the conveyor frame 1 and a push plate connected to the second linear module. The push plate is located at the upper end of the V-shaped roller 801. Secondly, in this embodiment, the conveying roller group 8 includes a first support 802 and two rollers 801 disposed on the first support 802, the two rollers 801 being arranged in a V-shape. Example 8

[0060] The difference between this embodiment and embodiment 7 is that, as Figure 7 , Figure 8 As shown, a height adjustment component 9 is also provided between the conveyor frame 1 and the conveyor roller assembly 8. The height adjustment component 9 includes: A rotating shaft 901 is mounted on the conveyor frame 1 along the direction of the steel pipe via a bracket. The third drive gear 905 is provided on the rotating shaft 901; The meshing rod 907 is provided at the lower end of the conveying roller assembly 8, and the meshing rod 907 meshes with the third drive gear 905; A drive component 903 is connected to one end of the rotating shaft 901.

[0061] In this embodiment, a protective box 902 corresponding to the number of conveyor roller sets 8 is provided inside the conveyor. The rotating shaft 901 passes through the protective box 902, and one end of the meshing rod 907 passes into the protective box 902 and meshes with the third drive gear 905. The third drive gear 905 is located inside the protective box 902. The driving component 903 can be driven by a motor or manually rotated by a turntable. The meshing rod 907 is provided with meshing teeth along the axial direction. The third drive gear 905 meshes with the meshing teeth. By rotating the rotating shaft 901, the third drive gear 905 is driven to rotate, thereby causing the third drive gear 905 to drive the meshing rod 907 to move up and down. The up and down movement of the meshing rod 907 drives the conveyor roller set 8 to move up and down, so that when cutting steel pipes of different diameters, the steel pipe, clamping component 3 and cutting component 4 can be made concentric by adjustment.

[0062] In addition, the protective box 902 is also provided with a base plate 909, on which a second support 904 is provided. A bearing is provided in the second support 904. The rotating shaft 901 passes through the second support 904 and is connected to the bearing. A fastening ring 906 is provided on the base plate 909. The fastening ring 906 is composed of two half rings connected by bolts. The fastening ring 906 is used to fix the bearing. A third drive gear 905 is provided on one side of the fastening ring 906. Furthermore, a fixing rod 908 is also provided on the base plate 909. One end of the meshing rod 907 is sleeved in the meshing rod 907. The side of the meshing rod 907 near the third drive gear 905 has an opening for easy meshing. Example 9

[0063] The difference between this embodiment and embodiment 8 is that, as Figure 1 The fixed-length component 6 shown has a feeding component 7 at its lower end, and the feeding component 7 includes: The material feeding plate 701 is inclinedly disposed on the cutting frame 2; The receiving bin 702 is located on one side of the cutting frame 2, and one end of the unloading plate 701 is connected to the receiving bin 702.

[0064] The cutting frame 2 is equipped with a protective cover. One end of the protective cover is hinged to the cutting frame 2, and the other end can be snapped onto the other side of the cutting frame 2. The use of the protective cover is existing technology, and its purpose is to prevent the steel pipe from flying out and injuring people under certain abnormal circumstances.

[0065] Both the cutting frame 2 and the conveying frame 1 are made of steel structure.

[0066] In this embodiment, after the cutting is completed, the clamping component 3 releases its grip on the steel pipe. At this time, the first linear module 603 moves away from the cutting component 4, and the pusher pushes the steel pipe forward, so that the cut end of the steel pipe falls onto the unloading plate 701 and rolls from the unloading plate 701 into the receiving bin 702, thereby collecting the cut steel pipe.

[0067] The workflow of this invention: Feeding: The steel pipe is placed on the conveyor roller group 8, and the pusher is pushed by the second linear module, which in turn pushes the tail end of the steel pipe to move forward along the conveyor roller group 8. Length setting: Adjust the distance between the limiting plate 602 and the support frame 401 to the required length by means of the first linear module 603, according to the required length of the steel pipe to be cut. Clamping and Cutting: The pusher 303 pushes the steel pipe through the cutting assembly 4, and controls the pusher 303 to push the first slider 304, thereby causing the first slider 304, the second slider 305 and the third slider 306 to retract inward synchronously, thereby clamping and fixing the steel pipe with multiple clamping rings 308; the cutting gun 411 is started, and the lifting platform 5 is raised and lowered according to the cutting requirements, or the cutting gun 411 is moved along the direction of the steel pipe by the first linear module 603, or the fourth slider 404 is driven to slide along the lead screw 403 by the third motor 402. The inner box 406 is tilted to adjust its angle, thereby cutting irregular cuts according to the cutting requirements. The clamping component 3 loosens its grip on the steel pipe, and the first linear module 603 moves away from the cutting component 4. The pusher pushes the steel pipe forward, so that the cut end of the steel pipe falls onto the unloading plate 701 and rolls from the unloading plate 701 into the receiving bin 702, thus collecting the cut steel pipe. Subsequently, the first linear module 603 returns to its original position, and the pusher pushes the steel pipe until the end of the steel pipe abuts against the limiting plate 602. The subsequent process is a repetition of the above process.

[0068] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A steel pipe cutting apparatus characterized by comprising: The utility model relates to a cutting device for steel pipe, which comprises a clamping assembly (3) and a cutting assembly (4), the clamping assembly (3) is slidably arranged on a cutting frame (2), and the cutting assembly (4) comprises: a support frame (401) which is arranged above the cutting frame (2) and is movable along the direction of the steel pipe; a first rotating member which is arranged in the support frame (401) and through which the steel pipe can pass; a cutting gun (411) which is arranged on the first rotating member; a pitch adjusting member which is arranged between the support frame (401) and the first rotating member and is used for adjusting the pitch angle of the first rotating member.

2. A steel pipe cutting apparatus according to claim 1, wherein The pitch adjusting assembly comprises: a third motor (402) which is arranged transversely in the support frame (401) and is located above or below the first rotating member; a lead screw (403) which is connected to the output shaft of the third motor (402) and is provided with a fourth sliding block (404) at one end, the fourth sliding block (404) is slidably connected to the support frame (401); a connecting rod (405) which is hingedly connected to one end of the fourth sliding block (404) and one end of the first rotating member.

3. A steel pipe cutting apparatus according to claim 2, wherein The first rotating member comprises: an inner box (406) which is arranged in the support frame (401) and is hingedly connected to one end of the connecting rod (405), the connecting rod (405) is connected to the inner box (406); a first motor (408) which is arranged on the inner box (406) and is provided with a first driving gear (409) on the output shaft; an adjusting gear (410) which is arranged in the inner box (406) and is rotatably connected to the inner wall of the inner box (406), the first driving gear (409) is engaged with the adjusting gear (410), and the cutting gun (411) is arranged on the inner wall of the adjusting gear (410).

4. A pipe cutting apparatus as defined in claim 1, wherein The clamping assembly (3) comprises: a mounting box (301) which is provided with a support disc (302) inside, one side of the support disc (302) is sequentially connected with a second rotating member and a connecting ring (309), and the connecting ring (309) is rotatably connected to the inner wall of the mounting box (301); a linkage assembly which is slidably arranged on the side of the support disc (302) away from the rotating structure; a pushing member (303) which is arranged on the support disc (302) and is connected with the linkage assembly to drive the linkage assembly to retract and clamp.

5. A steel pipe cutting apparatus according to claim 4, wherein The linkage assembly comprises: a first sliding block (304) which is connected with the pushing member (303); two second sliding blocks (305) which are respectively arranged on the two sides of the first sliding block (304). A third sliding block (306) is arranged opposite to the first sliding block (304); Wherein, a sliding rod (307) is slidably connected between two adjacent sliding blocks, and the first sliding block (304), the second sliding block (305) and the third sliding block (306) are all provided with clamping rings (308) on the inner sides.

6. A steel pipe cutting apparatus according to claim 5, wherein The first sliding block (304) is provided with a first sliding groove and a second sliding groove, the included angle between the first sliding groove and the second sliding groove is 90° and they are distributed staggered in the direction of the steel pipe, and the first sliding groove and the second sliding groove penetrate through the two side walls of the first sliding block (304); The second sliding block (305) and the third sliding block (306) are both provided with corresponding first sliding grooves and second sliding grooves.

7. A pipe cutting apparatus as defined in claim 4 wherein, The second rotating member comprises: A second motor (313) is arranged on the inner wall of the mounting box (301), and a second drive gear (310) is connected to the output shaft of the second motor (313); A rotating gear (311) is connected to one side of the support disc (302), and the rotating gear (311) is engaged with the second drive gear (310).

8. A pipe cutting apparatus as claimed in any one of claims 1 to 7, wherein, Further comprising a fixed-length assembly (6), the fixed-length assembly (6) comprises: A sliding plate (601) is slidably connected to the cutting frame (2) on both sides, and a vertical limiting plate (602) is arranged on the sliding plate (601).

9. A pipe cutting apparatus as claimed in any one of claims 1 to 7, wherein, Further comprising a conveying assembly, the conveying assembly comprises: A conveying frame (1) is connected to the cutting frame (2) on one end; A plurality of conveying roller groups (8) are arranged on the conveying frame (1), and each conveying roller group (8) is in a V shape.

10. A steel pipe cutting apparatus according to claim 9, wherein A height adjusting assembly (9) is further arranged between the conveying frame (1) and the conveying roller group (8), the height adjusting assembly (9) comprises: An axis (901) is arranged on the conveying frame (1) in the direction of the steel pipe through a support; A plurality of third drive gears (905) are arranged on the axis (901); An engagement rod (907) is arranged at the lower end of the conveying roller group (8), and the engagement rod (907) is engaged with the third drive gear (905); A driving member (903) is connected to one end of the axis (901).

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