Beveling machine for pipeline machining

Abstract

The invention relates to the technical field of beveling machines, and provides a beveling machine for pipeline machining, which comprises a rack, a support frame which rotates and moves relative to the rack, the support frame is provided with a sliding chute, a cutting part is arranged in the sliding chute in a sliding manner and is used for beveling a pipeline, a flattening part is arranged in the sliding chute in a sliding manner, and the flattening part and the cutting part are respectively positioned on two sides of the sliding chute. The flattening piece is used for flattening the end of a pipeline before groove machining of the pipeline, the pre-grinding piece is arranged on the flattening piece and used for pre-grinding before the end of the pipeline is flattened, and the truncated edge cutter is arranged on the flattening piece, located on the side, away from the pre-grinding piece, of the flattening piece and used for truncated edge machining of the groove of the pipeline. By means of the technical scheme, the problem that in the prior art, a beveling machine for pipeline machining is poor in machining precision is solved.

Description

Technical Field

[0001] The invention relates to the technical field of beveling machines, and in particular to a beveling machine for pipe processing. Background Art

[0002] In the field of pipeline engineering, the groove processing of large-diameter pipelines is an extremely critical link. Its processing quality directly affects the subsequent welding quality and the overall performance and service life of the pipeline. The traditional large-diameter pipeline groove processing technology has many defects.

[0003] In terms of processing procedures, it is usually carried out in steps. First, the pipe end is simply cleaned or roughly processed, then the groove is cut, and then the pipe is transferred to a special blunt edge processing equipment or station for blunt edge processing. This step-by-step processing requires the pipe to be clamped and transferred multiple times, and each process conversion will introduce new positioning errors and clamping errors. For example, during the transportation process, the pipe may be slightly displaced or deformed due to operations such as lifting and handling. It is difficult to ensure that it is completely accurately docked with the previous processing position when re-clamping, making it difficult to effectively control the processing accuracy, and the scrap rate and rework rate are high.

[0004] Traditional methods are often not sophisticated enough for pre-treatment of pipe ends. During transportation, the pipe ends are prone to problems such as bumps and rust caused by collisions or bumps. If not properly handled, the uneven pipe ends will cause strong impact and wear on the cutting blades during groove cutting, resulting in rapid loss of the cutting blades, frequent replacement of cutting parts, and a significant increase in equipment maintenance costs. At the same time, this unstable cutting environment will also cause vibration and stress concentration during the cutting process, seriously affecting the cutting accuracy, making the groove processing quality uneven and unable to meet high-quality welding requirements, thereby reducing the strength and reliability of the welded joints and affecting the safety of the entire pipeline system when subjected to complex working conditions such as pressure and temperature.

[0005] In addition, in the traditional process, the groove and blunt edge processing are carried out separately, and the secondary positioning error inevitably leads to the eccentricity problem between the blunt edge and the pipeline axis, which makes it difficult to ensure the relative position accuracy of the blunt edge and the groove, affecting the fusion quality and weld forming effect during welding. In addition, the entire processing cycle is lengthy, which makes it difficult to adapt to the growing demand for efficiency and precision in heavy-duty pipeline processing. Therefore, it is urgent to develop a pipeline processing beveling machine that can integrate and optimize various processing procedures and effectively improve processing precision and efficiency. Summary of the invention

[0006] The present invention provides a pipe beveling machine, which solves the problem of poor processing accuracy of the pipe beveling machine in the related art.

[0007] The technical solution of the present invention is as follows: A pipe beveling machine, used for processing the beveling of large-diameter pipes, comprising: frame; A support frame, the support frame is rotatable and movable relative to the frame, and the support frame has a slide groove; A cutting piece, which is slidably disposed in the slide groove and is used for groove processing of the pipeline; A flattening piece, which is slidably disposed in the slide groove and is located at two ends of the slide groove together with the cutting piece. The flattening piece is used to flatten the end of the pipe before the groove of the pipe is processed; A pre-grinding piece, which is arranged on the flattening piece and is used for pre-grinding the end of the pipe before flattening; A blunt edge knife is arranged on the flattening piece and is located on a side of the flattening piece away from the pre-grinding piece, and is used for blunt edge processing of the pipeline groove.

[0008] As a further technical solution, the cutting piece includes: A cutting seat, wherein the cutting seat is slidably disposed in the sliding groove, the cutting seat has a mounting portion, the mounting portion has a positioning groove, and the inner wall of the positioning groove has a locking hole; A cutting knife, the cutting knife being swingably mounted on the mounting portion; A pressing member, the pressing member is arranged in the positioning groove and pressed on the cutting knife for fixing the cutting knife, the pressing member has a locking hole, and the locking hole leads to the locking hole; A locking piece is rotatably arranged on the pressing piece, the locking piece passes through the locking hole and extends into the locking hole. After the locking piece rotates, the locking piece is locked or unlocked with the cutting seat.

[0009] As a further technical solution, the flattening piece includes: A slide seat, wherein the slide seat is slidably arranged in the slide groove, the slide seat has a first adjustment groove and a second adjustment groove, the blunt edge knife is slidably arranged in the second adjustment groove, the first adjustment groove and the second adjustment groove are vertically arranged, the first adjustment groove is located at one side of the slide seat, and the second adjustment groove runs through the slide seat; A leveling knife, the leveling knife is slidably disposed in the first adjustment groove; A top piece is slidably arranged in the first adjustment groove and is located on one side of the leveling knife. The top piece is used to install the pre-grinding piece. The pre-grinding piece has a clearance groove, and the leveling knife is located in the clearance groove.

[0010] As a further technical solution, the cutting knife has an installation hole and a fixing hole, and the installation hole and the fixing hole are respectively located in the middle and end of the cutting knife, and the clamping piece has a fixing portion and an abutting portion, and the fixing portion is pressed into the fixing hole, and the fixing portion has a notch, and the bottom wall of the fixing hole has a protrusion, and the notch is used to accommodate the protrusion, and the abutting portion abuts against the cutting knife.

[0011] As a further technical solution, the locking member has a first locking portion, the locking hole has a first locking groove, the locking hole has a second locking groove, after the locking member rotates, the first locking portion slides into or out of the first locking groove, the locking member has an inner cavity and an arc-shaped groove, the inner cavity leads to the arc-shaped groove, the arc-shaped groove leads to the second locking groove, and the locking member further includes: A positioning bead, the positioning bead is movably disposed in the arc-shaped groove and extends from the arc-shaped groove into the second locking groove; An unlocking member, the unlocking member is slidably disposed in the inner cavity, the unlocking member has an unlocking groove, and after the unlocking member slides, the positioning bead slides into or out of the unlocking groove; A first elastic member, wherein one end of the first elastic member acts on the inner cavity, and the other end of the first elastic member acts on the unlocking member to provide a force for the locking member to slide out of the inner cavity.

[0012] As a further technical solution, the leveling knife has a threaded hole, and the top piece includes: a first support member, the first support member being slidably disposed in the first adjustment slot; a second supporting member, the second supporting member is arranged to move relative to the first supporting member, the pre-grinding member is arranged on the second supporting member, and the second supporting member has a connecting hole; A fixing bolt, the fixing bolt passes through the connecting hole and extends into the threaded hole; A second elastic member, wherein one end of the second elastic member acts on the first supporting member, and the other end of the second elastic member acts on the second supporting member to provide a force for the second supporting member to move away from the first supporting member.

[0013] As a further technical solution, the leveling knife and the pre-grinding piece both have a conical grinding surface, the support frame is a circular support frame, and the conical grinding surface is eccentrically arranged with respect to the support frame.

[0014] As a further technical solution, it also includes: A translation frame, wherein the translation frame is movably arranged on the frame, and the support frame is rotatably arranged on the translation frame; A first pipe-bearing frame, wherein the first pipe-bearing frame is located at one side of the frame; a second pipe-bearing frame, the second pipe-bearing frame being located at a side of the first pipe-bearing frame away from the frame; Pipe bearing members, two of which are slidably disposed on the first pipe bearing frame and the second pipe bearing frame respectively, and the pipe bearing members are used to support the pipeline; Pipe fixing parts, there are several pipe fixing parts, which are respectively arranged on the first pipe supporting frame and the second pipe supporting frame, and are used to fix the pipeline.

[0015] As a further technical solution, the first pipe support frame and the second pipe support frame both include: A base, the base being located at one side of the frame; A lifting platform is provided on the base for lifting and lowering, and the pipe bearing member is provided on the lifting platform for sliding movement.

[0016] As a further technical solution, the pipe-bearing member comprises: A pipe bearing seat, wherein the pipe bearing seat has a slide rail; A sliding member is slidably arranged on the slide rail, there are two sliding members, a fixed space is formed between the two sliding members, and the fixed space is used to fix the pipeline.

[0017] The working principle and beneficial effects of the present invention are: In the present invention, the pre-treatment operation of the pre-grinding and flattening parts avoids the vibration and stress concentration caused by the unevenness of the pipe end during the cutting process. This stable cutting working environment helps to maintain the working performance of the cutting parts and reduce the influence of abnormal vibration on the cutting accuracy, thereby improving the processing accuracy of the groove, ensuring that the processed groove meets the requirements of high-quality welding, and improving the overall quality of the product.

[0018] The blunt edge cutter starts working when the cutting piece is about to be cut and completes the blunt edge cutting synchronously, realizing the processing of the groove and the blunt edge in the same process. This avoids the secondary positioning error caused by transferring the pipe for blunt edge processing after the groove processing is completed in the traditional process. Since there is no need to transfer the pipe, the eccentricity problem between the blunt edge and the pipe axis caused by re-clamping and positioning is reduced, which greatly improves the relative position accuracy of the blunt edge and the groove. The eccentricity can be controlled within ±0.2 mm, effectively ensuring the fusion quality and weld forming effect during welding. At the same time, processing in the same process reduces processing links, shortens the processing cycle, and improves overall production efficiency, which is especially important for heavy pipe processing, which requires high efficiency and precision.

[0019] In the same process, the process of cutting the groove of the cutting piece provides a relatively stable processing basis for the blunt edge knife, making the blunt edge forming process more stable and reliable. The dimensional accuracy of the blunt edge, such as thickness deviation, can be controlled within ±0.1 mm, and the angle accuracy deviation is within ±0.5 degrees, which can better meet the strict requirements of the welding process specifications for the blunt edge, improve the strength and reliability of the welded joint, reduce the occurrence of welding defects, and thus improve product quality and engineering safety.

[0020] Through the orderly coordination of pre-grinding, flattening, cutting and blunt edge processing, the error accumulation caused by multiple clamping, transportation and connection between different processes is reduced. In the traditional processing method, the conversion between each process may introduce new positioning errors, clamping errors, etc., while this equipment integrates and optimizes these processes, so that the overall processing accuracy is significantly improved, ensuring the performance stability of the pipeline during welding and subsequent use, improving the quality consistency of the product, and reducing the scrap rate and rework rate caused by processing accuracy problems.

[0021] During the cutting process, the uneven cutting temperature caused by the unevenness of the pipe end is avoided, thereby reducing the impact on the change of the properties of the groove surface material. This makes the organizational structure and mechanical properties of the groove surface material more uniform, which is conducive to improving the performance stability of the welded joint, ensuring the reliability of the entire pipeline when subjected to complex working conditions such as pressure and temperature, further improving the quality and service life of the product, and providing a strong guarantee for the safe application of heavy-duty pipelines in various projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0023] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A is a schematic diagram of the enlarged structure of the middle part; Figure 3 for Figure 1 Schematic diagram of the enlarged structure of B; Figure 4 It is a cross-sectional schematic diagram of the flattening member and related structures in the present invention; Figure 5 It is a schematic diagram of the assembly structure of the cutting member hiding the cutting knife in the present invention; Figure 6 It is a schematic diagram of the assembly structure of the cutting part hiding the pressing part in the present invention; Figure 7 It is a schematic diagram of the structure of the locking member in the present invention; Figure 8It is a schematic cross-sectional structure diagram of the cutting piece in the present invention; Fig. 9 It is a schematic diagram of the structure of the unlocking member in the present invention; In the figure: frame 1, support frame 2, slide groove 201, cutting member 3, cutting seat 301, mounting portion 3011, positioning groove 3012, locking hole 3013, cutting knife 302, mounting hole 3021, fixing hole 3022, protrusion 3023, pressing member 303, locking hole 3031, abutting portion 3032, notch 3033, fixing portion 3034, first locking groove 3035, second locking groove 3036, locking member 304, first locking portion 3041, inner cavity 3042, arc groove 3043, positioning bead 3044, unlocking member 3045, unlocking groove 3046, first elastic member 30 47, leveling member-4, sliding seat-401, first adjustment slot-4011, second adjustment slot-4012, leveling knife-402, threaded hole-4021, top member-403, first support member-4031, second support member-4032, connecting hole-4033, fixing bolt-4034, second elastic member-4035, pre-grinding member-5, yielding slot-501, conical grinding surface-502, blunt edge knife-6, translation frame-7, first pipe bearing frame-8, base-801, lifting platform-802, second pipe bearing frame-9, pipe bearing member-10, pipe bearing seat-1001, slide rail-1002, sliding member-1003, fixing space-1004, pipe fixing member-11. DETAILED DESCRIPTION In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0024] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0025] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] Reference Figure 1 to Figure 9 , which is the first embodiment of the present invention, proposes a pipe beveling machine for processing the beveling of large-diameter pipes, including a frame 1, a support frame 2 that is rotatable and movable relative to the frame 1, the support frame 2 having a slide groove 201, a cutting piece 3 that is slidably arranged in the slide groove 201, the cutting piece 3 being used for pipe beveling processing, a flattening piece 4 that is slidably arranged in the slide groove 201, and located at both ends of the slide groove 201 respectively with the cutting piece, the flattening piece 4 being used for flattening the pipe end before pipe beveling processing, a pre-grinding piece 5 that is arranged on the flattening piece 4, and used for pre-grinding the pipe end before flattening, a blunt edge knife 6 that is arranged on the flattening piece 4, and located on the side of the flattening piece 4 away from the pre-grinding piece 5, and used for blunt edge processing of pipe beveling.

[0028] In this embodiment, the rotating and moving support frame 2 drives the cutting piece 3, the flattening piece 4, the pre-grinding piece 5 and the blunt edge knife 6 to rotate and gradually move toward the end of the pipe. The design of the slide 201 limits the movement of the relevant cutting tools. Before the cutting piece 3 cuts, the pre-grinding piece 5 first pre-grinds the damage to the end of the pipe caused during transportation (mainly the damage in the form of bulges caused by the end being hit or bumped). After the pre-grinding piece 5 pre-grinds the bulges at the end of the pipe caused during transportation, the flattening piece 4 further processes the slight bulges or rust, which effectively improves the surface condition of the part to be processed of the pipe. When the cutting piece 3 is working, the impact and wear of the uneven pipe end on its cutting edge are reduced, thereby significantly extending the service life of the cutting piece 3. After pre-grinding and flattening, the wear rate of the cutting edge of the cutting piece 3 is reduced by about 5% to 10% compared with the untreated state, which can reduce the replacement frequency of the cutting piece 3 and reduce the equipment maintenance cost. At the same time, the flat working surface enables the cutting piece 3 to cut more stably, the cutting surface is smoother and flatter, and the control of cutting depth and angle is more precise, which effectively improves the processing quality of the groove and ensures the uniformity and sealing of the weld during subsequent welding.

[0029] The pre-treatment operation of the pre-grinding piece 5 and the flattening piece 4 avoids the vibration and stress concentration caused by the unevenness of the pipe end during the cutting process. This stable cutting working environment helps to maintain the working performance of the cutting piece 3 and reduce the impact of abnormal vibration on the cutting accuracy, thereby improving the processing accuracy of the groove, ensuring that the processed groove meets the requirements of high-quality welding, and improving the overall quality of the product.

[0030] The blunt edge cutter 6 starts working when the cutting piece 3 is about to be cut and completes the blunt edge cutting synchronously, realizing the processing of the groove and the blunt edge in the same process. This avoids the secondary positioning error caused by transferring the pipe for blunt edge processing after the groove processing is completed in the traditional process. Since there is no need to transfer the pipe, the eccentricity problem between the blunt edge and the pipe axis caused by re-clamping and positioning is reduced, so that the relative position accuracy of the blunt edge and the groove is greatly improved, and the eccentricity can be controlled within ±0.2 mm, which effectively guarantees the fusion quality and weld forming effect during welding. At the same time, processing in the same process reduces processing links, shortens processing cycles, and improves overall production efficiency, which is particularly important for heavy pipe processing, which requires high efficiency and precision.

[0031] In the same process, the process of cutting the groove of the cutting piece 3 provides a relatively stable processing basis for the blunt edge knife 6, making the blunt edge forming process more stable and reliable. The dimensional accuracy of the blunt edge, such as the thickness deviation, can be controlled within ±0.1 mm, and the angle accuracy deviation is within ±0.5 degrees, which can better meet the strict requirements of the welding process specification for the blunt edge, improve the strength and reliability of the welded joint, reduce the generation of welding defects, and thus improve product quality and engineering safety.

[0032] Through the orderly coordination of pre-grinding, flattening, cutting and blunt edge processing, the error accumulation caused by multiple clamping, transportation and connection between different processes is reduced. In the traditional processing method, the conversion between each process may introduce new positioning errors, clamping errors, etc., while this equipment integrates and optimizes these processes, so that the overall processing accuracy is significantly improved, ensuring the performance stability of the pipeline during welding and subsequent use, improving the quality consistency of the product, and reducing the scrap rate and rework rate caused by processing accuracy problems.

[0033] During the cutting process, the uneven cutting temperature caused by the unevenness of the pipe end is avoided, thereby reducing the impact on the change of the properties of the groove surface material. This makes the organizational structure and mechanical properties of the groove surface material more uniform, which is conducive to improving the performance stability of the welded joint, ensuring the reliability of the entire pipeline when subjected to complex working conditions such as pressure and temperature, further improving the quality and service life of the product, and providing a strong guarantee for the safe application of heavy-duty pipelines in various projects.

[0034] Further, the cutting member 3 includes a cutting seat 301, which is slidably arranged in the slide groove 201. The cutting seat 301 has a mounting portion 3011, and the mounting portion 3011 has a positioning groove 3012. The inner wall of the positioning groove 3012 has a locking hole 3013. The cutting knife 302 is swingably arranged on the mounting portion 3011. The pressing member 303 is arranged in the positioning groove 3012 and pressed on the cutting knife 302 for fixing the cutting knife 302. The pressing member 303 has a locking hole 3031, and the locking hole 3031 leads to the locking hole 3013. The locking member 304 is rotatably arranged on the pressing member 303. The locking member 304 passes through the locking hole 3031 and extends into the locking hole 3013. After the locking member 304 rotates, the locking member 304 is locked or unlocked with the cutting seat 301.

[0035] In this embodiment, when the cutting knife 302 needs to be installed, the cutting knife 302 is placed at a suitable position on the mounting portion 3011, and then the arc-shaped clamping member 303 is placed in the positioning groove 3012 to clamp the cutting knife 302, and then the locking member 304 is rotated so that it passes through the locking hole 3031 and extends into the locking hole 3013, thereby locking the cutting knife 302 and the cutting seat 301, ensuring that the cutting knife 302 will not loosen or move during operation.

[0036] The arc-shaped clamping piece 303 can be replaced with a clamping piece 303 of different curvature under different processing angles. This feature enables the cutting knife 302 to use a universal beveling tool or an ordinary tool. For enterprises, there is no need to stock a large number of specially customized cutting tools of different specifications, which greatly reduces the spare parts cost of the cutting knife 302. For example, when facing heavy-duty pipe processing tasks with various bevel angle requirements, it may be necessary to purchase a variety of special tools with corresponding angles in the past, but now only a small number of universal tools combined with clamping pieces 303 of different curvatures are needed to cope with it, and the tool procurement cost can be greatly reduced.

[0037] When the angle of the cutting knife 302 needs to be adjusted for processing different pipes and processes, only the pressing piece 303 of the corresponding arc needs to be replaced instead of the entire cutting knife 302, which simplifies the tool changing process. The operator can complete the tool angle adjustment more quickly, reduce equipment downtime, and improve production efficiency. For example, when switching from processing a large-angle groove pipe to a small-angle groove pipe, replacing the pressing piece 303 with a suitable arc may only take a few minutes, while the traditional tool changing method may take half an hour or even longer.

[0038] The arc-shaped clamping member 303 clamps and fixes the cutting knife 302, which ensures that the cutting knife 302 remains stable during operation. Whether a universal beveling tool or an ordinary tool is used, the tool can be effectively prevented from shaking or shifting during cutting tasks at different angles. During the cutting process, the cutting angle deviation can be controlled within ±0.3 degrees, and the cutting depth deviation does not exceed ±0.1 mm, thereby improving the accuracy of beveling processing and ensuring the quality of subsequent welding.

[0039] Since the arc of the clamping piece 303 can be flexibly changed, the cutting knife 302 can better adapt to various working conditions in heavy pipe processing. Whether it is the large cutting resistance faced when processing high-strength alloy steel pipes, or the long-distance cutting requirements when processing large-diameter pipes, by adjusting the clamping piece 303 to adapt the tool angle, the cutting knife 302 can maintain a good working condition and improve the stability and reliability of the equipment under complex working conditions.

[0040] Further, the flattening piece 4 includes a slide 401, which is slidably set in the slide groove 201, and the slide 401 has a first adjustment groove 4011 and a second adjustment groove 4012. The blunt edge knife 6 is slidably set in the second adjustment groove 4012. The first adjustment groove 4011 and the second adjustment groove 4012 are vertically set. The first adjustment groove 4011 is located on one side of the slide 401, and the second adjustment groove 4012 runs through the slide 401. The flattening knife 402 is slidably set in the first adjustment groove 4011. The top piece 403 is slidably set in the first adjustment groove 4011 and is located on one side of the flattening knife 402. The top piece 403 is used to install the pre-grinding piece 5. The pre-grinding piece 5 has a make way groove 501, and the flattening knife 402 is located in the make way groove 501.

[0041] In this embodiment, the flattening member 4 plays a crucial transition and auxiliary role in the entire pipeline groove processing process. The slide seat 401 thereof, as a basic bearing component, slides very smoothly in the slide groove 201, thanks to the precise fit between the slide groove 201 and the slide seat 401.

[0042] The layout of the first adjustment slot 4011 and the second adjustment slot 4012 on the slide 401 provides accurate positioning and adjustment space for the internal components. When the leveling knife 402 is installed in the first adjustment slot 4011, the operator can adjust the position of the pre-grinding piece 5 and the leveling knife 402 by adjusting the position of the top piece 403 according to the actual unevenness of the pipe end to adapt to different pipe diameters.

[0043] The through-type design of the second adjustment slot 4012 facilitates the installation and adjustment of the blunt edge knife 6. The blunt edge knife 6 is installed in the second adjustment slot 4012. When processing pipes of different specifications or different blunt edge requirements, the cutting position and angle of the blunt edge knife 6 can be changed by adjusting the position of the blunt edge knife 6 in the second adjustment slot 4012. For example, for large-diameter pipes and when the blunt edge thickness requirement is large, the slider can be adjusted outward to make the blunt edge knife 6 extend more to achieve a larger cutting amount; while for small-diameter pipes or when the blunt edge thickness requirement is small, the slider can be adjusted inward to reduce the extension of the blunt edge knife 6 to ensure the accuracy of blunt edge processing.

[0044] Furthermore, the cutting knife 302 has an installation hole 3021 and a fixing hole 3022, and the installation hole 3021 and the fixing hole 3022 are respectively located in the middle and the end of the cutting knife 302, and the clamping piece 303 has a fixing portion 3034 and an abutting portion 3032, and the fixing portion 3034 is pressed into the fixing hole 3022, and the fixing portion 3034 has a notch 3033, and the bottom wall of the fixing hole 3022 has a protrusion 3023, and the notch 3033 is used to accommodate the protrusion 3023, and the abutting portion 3032 abuts against the cutting knife 302.

[0045] In this embodiment, the mounting hole 3021 and the fixing hole 3022 of the cutting blade 302 are respectively located in the middle and the end thereof, and this arrangement plays a key role in positioning and fixing when cooperating with the pressing member 303. The mounting hole 3021 can be used for preliminary positioning when installing the cutting blade 302 to ensure that it is accurately placed on the mounting portion 3011 of the cutting seat 301.

[0046] The shape of the fixing portion 3034 of the pressing member 303 is adapted to the fixing hole 3022. When the pressing member 303 is placed in the positioning groove 3012 and presses the cutting blade 302, the fixing portion 3034 can be tightly pressed into the fixing hole 3022. The notch 3033 of the fixing portion 3034 cooperates with the protrusion 3023 of the bottom wall of the fixing hole 3022 to form a positioning structure.

[0047] The abutment part 3032 of the pressing member 303 is in close contact with the cutting blade 302, and its abutment surface is finely ground to ensure the fit with the cutting blade 302. The pressure applied by the abutment part 3032 is evenly distributed on the cutting blade 302, so that the cutting blade 302 will not shake or vibrate due to uneven local force during operation.

[0048] During the entire pipe processing process, the structural design of the cutting blade 302 and the pressing member 303 has a positive impact on the overall performance of the equipment. Since the cutting blade 302 can be firmly and accurately fixed, the equipment can maintain high processing accuracy and stability when cutting pipes of different materials and specifications.

[0049] Further, the locking member 304 has a first locking portion 3041, the locking hole 3013 has a first locking groove 3035, and the locking hole 3031 has a second locking groove 3036. After the locking member 304 is rotated, the first locking portion 3041 slides into or out of the first locking groove 3035. The locking member 304 has an inner cavity 3042 and an arc groove 3043. The inner cavity 3042 leads to the arc groove 3043, and the arc groove 3043 leads to the second locking groove 3036. The locking member 304 also includes a positioning bead 3044. The positioning bead 3044 is movably arranged in the arc groove 3043. After the positioning bead 3044 moves, it extends from the arc groove 3043 to the second locking groove 3036. The unlocking piece 3045 is slidably arranged in the inner cavity 3042. The unlocking piece 3045 has an unlocking groove 3046. After the unlocking piece 3045 slides, the positioning bead 3044 slides into or out of the unlocking groove 3046. One end of the first elastic piece 3047 acts on the inner cavity 3042, and the other end acts on the unlocking piece 3045, providing force for the locking piece 304 to slide out of the inner cavity 3042.

[0050] In this embodiment, the first locking portion 3041 of the locking member 304, the first locking groove 3035 of the locking hole 3013, and the second locking groove 3036 of the locking hole 3031 together constitute a set of precise locking and unlocking systems. When it is necessary to lock the cutting knife 302, the cutting knife 302 is placed at a suitable position on the mounting portion 3011 of the cutting seat 301, and then the arc-shaped pressing member 303 is placed in the positioning groove 3012 to press the cutting knife 302, and then the locking member 304 is rotated, and the first locking portion 3041 slides into the first locking groove 3035 during the rotation process, thereby achieving a firm locking of the cutting knife 302 and the cutting seat 301. In this process, the shape of the first locking portion 3041 and the first locking groove 3035 are both spiral, and the spiral design allows the first locking portion 3041 and the first locking groove 3035 to be effectively locked after limiting the axial movement, and the structure is stable, and unlocking is more convenient after the restriction is released.

[0051] The design of the inner cavity 3042, the arc groove 3043 and the positioning bead 3044 of the locking member 304 further enhances the reliability and convenience of locking. The positioning bead 3044 is movably arranged in the arc groove 3043 and can extend from the arc groove 3043 to the second locking groove 3036 to achieve radial locking of the locking member 304. When the locking member 304 is rotated into place, the positioning bead 3044 extends from the arc groove 3043 part into the second locking groove 3036 under the action of the unlocking member 3045, which plays a role in preventing mis-locking.

[0052] The unlocking member 3045 is slidably disposed in the inner cavity 3042. When the cutting knife 302 needs to be unlocked, the operator operates the unlocking member 3045 to slide in the inner cavity 3042. The force provided by the first elastic member 3047 to slide the locking member 304 out of the inner cavity 3042 is overcome. During the sliding process of the unlocking member 3045, the positioning bead 3044 slides into the unlocking groove 3046 of the unlocking member 3045. At this time, the axial locking of the locking member 304 is cancelled, and the locking member 304 can be rotated to make the first locking portion 3041 slide out of the first locking groove 3035 to complete the unlocking operation. This unlocking mechanism not only ensures the stability of the cutting knife 302 during normal operation, but also provides a convenient and fast unlocking method when the cutting knife 302 needs to be replaced or maintained, thereby reducing equipment downtime and improving production efficiency.

[0053] With this locking and unlocking structure, the operator can quickly and accurately complete the replacement operation of the cutting blade 302. Compared with the traditional complex locking structure, each replacement of the cutting blade 302 can save time, and for large-scale production, it can significantly improve the overall production efficiency and reduce production costs. At the same time, due to the reliability of the locking, it also ensures that the cutting blade 302 always maintains a stable working state during the cutting process, improves the accuracy and quality of the groove processing, provides a good basic condition for the subsequent welding process, and ensures the key performance indicators such as the strength and sealing of the welded joint.

[0054] Furthermore, the leveling knife 402 has a threaded hole 4021, and the top member 403 includes a first support member 4031, the first support member 4031 is slidably set in the first adjustment groove 4011, and the second support member 4032 is movably set relative to the first support member 4031. The pre-grinding member 5 is set on the second support member 4032, and the second support member 4032 has a connecting hole 4033. The fixing bolt 4034 passes through the connecting hole 4033 and extends into the threaded hole 4021. One end of the second elastic member 4035 acts on the first support member 4031, and the other end acts on the second support member 4032, providing a force for the second support member 4032 to move away from the first support member 4031.

[0055] In this embodiment, the threaded hole 4021 of the leveling knife 402 provides a key interface for connecting it with the top member 403. The first support member 4031 can slide smoothly in the first adjustment groove 4011, thanks to the precise fit and good lubrication between the inner wall of the first adjustment groove 4011 and the outer surface of the first support member 4031. This sliding setting enables the leveling knife 402 to be flexibly adjusted in position according to the actual situation of the pipe end during operation.

[0056] The movable arrangement of the second support member 4032 relative to the first support member 4031 gives the entire structure a certain elastic adjustment capability. When the fixing bolt 4034 penetrates the connection hole 4033 of the second support member 4032 and extends into the threaded hole 4021 of the leveling knife 402, the leveling knife 402 and the top member 403 can be relatively fixed by tightening the fixing bolt 4034. However, due to the existence of the second elastic member 4035, one end of it acts on the first support member 4031 and the other end acts on the second support member 4032, providing a force to move the second support member 4032 away from the first support member 4031, so that the leveling knife 402 can have a certain buffer space when it is impacted by a certain external force or encounters a local hardness change at the end of the pipe during processing. For example, when processing a pipe with hard spots on the surface, when the leveling knife 402 contacts the hard spots and encounters greater resistance, the second elastic member 4035 will be compressed, and the second support member 4032 will have a slight displacement relative to the first support member 4031, thereby preventing the leveling knife 402 from being damaged or causing a large positional offset due to sudden overload, thereby ensuring the stability and continuity of the processing.

[0057] The connection structure between the leveling knife 402 and the top piece 403 plays a positive role in improving the processing accuracy. In the long-term processing process, due to factors such as the vibration of the equipment and the unevenness of the pipe material, the traditional rigid connection structure may cause a slight change in the position of the leveling knife 402, thereby affecting the leveling effect of the pipe end. The elastic adjustment mechanism in this structure can effectively absorb the impact of these unstable factors, so that the leveling knife 402 can always maintain a relatively stable cutting depth and angle. From the perspective of equipment reliability, this structure reduces the probability of damage to the leveling knife 402 due to accidental impact or overload. The advantages of this structure are more obvious when processing some high-strength alloy pipes or recycling waste pipes with poor surface conditions.

[0058] Furthermore, the leveling knife 402 and the pre-grinding piece 5 both have a conical grinding surface 502 , the support frame 2 is a circular support frame 2 , and the conical grinding surface 502 is eccentrically arranged with respect to the support frame 2 .

[0059] In this embodiment, the conical grinding surface 502 of the leveling knife 402 and the pre-grinding piece 5 has a unique processing advantage. This conical shape can gradually increase the cutting or grinding force when contacting the end of the pipe, thereby achieving accurate processing of the end of the pipe.

[0060] When the support frame 2 rotates and advances toward the end of the pipe, due to the eccentric setting, the action trajectory of the conical grinding surface 502 on the end of the pipe presents a spiral shape. Compared with the traditional concentric setting grinding method, this spiral grinding trajectory can remove the material at the end of the pipe more evenly. For example, when processing large-diameter pipes, the concentrically set grinding surface may cause uneven grinding in the center area and edge area of ​​the pipe, which is prone to excessive center grinding or insufficient edge grinding. The eccentrically set conical grinding surface 502 can effectively avoid this problem, making the flattening or pre-grinding effect of the entire pipe end more consistent.

[0061] In the actual processing process, the eccentricity can be precisely adjusted according to the diameter, material and processing requirements of the pipe. Generally speaking, for pipes with larger diameters and harder materials, the eccentricity can be appropriately increased to increase the coverage and strength of grinding; while for pipes with smaller diameters and softer materials, the eccentricity can be appropriately reduced to avoid excessive grinding. Through this flexible eccentricity adjustment, the equipment can adapt to the processing needs of various types of pipes, improving the versatility and processing accuracy of the equipment. At the same time, due to the special action trajectory of the conical grinding surface 502, a larger area of ​​the pipe end can be processed in the same time.

[0062] Furthermore, it also includes a translation frame 7, which is movably set on the frame 1, and the support frame 2 is rotatably set on the translation frame 7. The first pipe-bearing frame 8 is located on one side of the frame 1, and the second pipe-bearing frame 9 is located on the side of the first pipe-bearing frame 8 away from the frame 1. There are two pipe-bearing members 10, which are respectively slidably set on the first pipe-bearing frame 8 and the second pipe-bearing frame 9. The pipe-bearing members 10 are used for supporting pipelines. There are a plurality of pipe fixing members 11, which are respectively set on the first pipe-bearing frame 8 and the second pipe-bearing frame 9 for fixing pipelines.

[0063] In this embodiment, the translation frame 7 plays an important auxiliary role in the entire pipeline processing equipment. It can move smoothly on the frame 1, providing additional freedom of movement for the support frame 2. The translation frame 7 is connected to the frame 1 through a high-precision guide rail and slider structure, such as a linear ball guide rail or a slide rail cylinder design, to ensure the straightness and stability of the translation frame 7 during movement. When processing the groove, while the support frame 2 rotates, the tool is driven to the corresponding processing depth by the movement of the translation frame 7, so that the processing can be completed quickly and accurately, greatly improving the flexibility and adaptability of the equipment.

[0064] The first pipe support frame 8 and the second pipe support frame 9 are respectively located on both sides of the frame 1, and they jointly undertake the important task of supporting the pipeline. The pipe support member 10 is slidably arranged on the pipe support frame, and its surface is usually wrapped with soft materials such as rubber or polyurethane to prevent scratches on the pipeline surface during the process of supporting the pipeline. The sliding function of the pipe support member 10 can meet the processing requirements of pipelines of different lengths. When installing the pipeline, the position of the pipe support member 10 on the pipe support frame can be adjusted according to the actual length of the pipeline, so that the pipeline can be stably supported.

[0065] The pipe fixing parts 11 are distributed on the first pipe support frame 8 and the second pipe support frame 9, and are used to firmly fix the pipe on the pipe support frame. The pipe fixing parts 11 can adopt a clamping structure, and the pipe can be clamped and loosened by adjusting bolts or hydraulic devices, or can be fixed by rope hoops or chain hoops as shown in the figure. This ensures that the pipe will not be displaced or shaken during the processing. When performing high-precision groove cutting, if the pipe is slightly displaced, it may cause deviations in the groove angle and depth, thereby affecting the subsequent welding quality.

[0066] Furthermore, the first pipe-bearing frame 8 and the second pipe-bearing frame 9 both include a base 801 , the base 801 is located at one side of the frame 1 , a lifting platform 802 is lifted and lowered on the base 801 , and the pipe-bearing member 10 is slidably disposed on the lifting platform 802 .

[0067] In this embodiment, the base 801 of the first pipe support frame 8 and the second pipe support frame 9 serves as the basic part of the entire pipe support frame structure, provides a stable installation platform for subsequent components and bears the main weight load. The lifting platform 802 is set on the base 801 for lifting and lowering, and the mechanism for realizing this lifting function can be a hydraulic jack system, a screw nut lifting mechanism or a gear rack lifting device. Taking the hydraulic jack system as an example, it is composed of a hydraulic pump, a hydraulic cylinder and a control valve. By controlling the hydraulic pump to inject or discharge hydraulic oil into the hydraulic cylinder, the piston is driven to move, thereby realizing the precise lifting and lowering of the lifting platform 802. This lifting method has the advantages of large carrying capacity, stable lifting and lowering, and high precision. The lifting precision can be controlled within ±0.5 mm. The screw nut lifting mechanism relies on the motor to drive the screw to rotate, and the nut drives the lifting platform 802 to move up and down along the screw. Its structure is relatively simple, the cost is low, and it can also achieve relatively accurate position control. The pipe support 10 is slidably arranged on the lifting platform 802, and a special guide groove is arranged on the lifting platform 802. The pipe support 10 is connected by a matching fixing piece to ensure that it can slide smoothly left and right on the lifting platform 802. The design of the lifting platform 802 enables the equipment to process products with different pipe diameters.

[0068] Furthermore, the pipe bearing member 10 includes a pipe bearing seat 1001, the pipe bearing seat 1001 has a slide rail 1002, a sliding member 1003 is slidably arranged on the slide rail 1002, there are two sliding members 1003, and a fixed space 1004 is formed between the two sliding members 1003, and the fixed space 1004 is used to fix the pipeline.

[0069] In this embodiment, the pipe holder 1001 of the pipe holder 10 serves as a basic support structure, and the slide rail 1002 it has provides a precise guide for the sliding of subsequent components. There are two sliding members 1003 that are slidably arranged on the slide rail 1002, and the fixed space 1004 formed between them is a key area for fixing the pipeline. When installing the pipeline, the pipeline is placed in the fixed space 1004, and the two sliding members 1003 can be adjusted for relative sliding according to the diameter of the pipeline. This adjustable fixing method has strong adaptability and can meet the support and fixing requirements of pipelines of different diameter specifications. Moreover, through the sliding adjustment of the sliding member 1003 on the slide rail 1002, compared with the traditional fixed-size pipe holder, it can fit the outer surface of the pipeline more accurately, reducing the shaking and displacement of the pipeline during the processing due to loose fixation or mismatched size, thereby improving the stability of the pipeline during processing.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A pipe beveling machine, used for beveling large-diameter pipes, characterized in that: include: Rack(1); A support frame (2), the support frame (2) being rotatably and movably arranged relative to the frame (1), the support frame (2) having a slide groove (201); A cutting piece (3), the cutting piece (3) being slidably disposed in the slide groove (201), the cutting piece (3) being used for groove processing of the pipeline; a flattening piece (4), the flattening piece (4) being slidably disposed in the slide groove (201), and being located at two ends of the slide groove (201) with the cutting piece (3), respectively, the flattening piece (4) being used to flatten the end of the pipe before groove processing of the pipe; A pre-grinding piece (5), the pre-grinding piece (5) being arranged on the flattening piece (4) and used for pre-grinding the end of the pipe before flattening; A blunt edge knife (6), the blunt edge knife (6) being arranged on the flattening piece (4), located on a side of the flattening piece (4) away from the pre-grinding piece (5), and being used for blunt edge processing of the pipeline groove.

2. A pipe processing beveling machine according to claim 1, characterized in that: The cutting element (3) comprises: A cutting seat (301), the cutting seat (301) being slidably disposed in the sliding groove (201), the cutting seat (301) having a mounting portion (3011), the mounting portion (3011) having a positioning groove (3012), and the inner wall of the positioning groove (3012) having a locking hole (3013); A cutting knife (302), the cutting knife (302) being swingably mounted on the mounting portion (3011); A pressing piece (303), the pressing piece (303) being arranged in the positioning groove (3012) and pressed onto the cutting knife (302) for fixing the cutting knife (302), the pressing piece (303) having a locking hole (3031), the locking hole (3031) leading to the locking hole (3013); A locking member (304), the locking member (304) being rotatably disposed on the pressing member (303), the locking member (304) passing through the locking hole (3031) and extending into the locking hole (3013), and after the locking member (304) is rotated, the locking member (304) and the cutting seat (301) are locked or unlocked.

3. A pipe processing beveling machine according to claim 1, characterized in that: The flattening member (4) comprises: A slide seat (401), the slide seat (401) being slidably disposed in the slide groove (201), the slide seat (401) having a first adjustment groove (4011) and a second adjustment groove (4012), the blunt edge knife (6) being slidably disposed in the second adjustment groove (4012), the first adjustment groove (4011) and the second adjustment groove (4012) being vertically disposed, the first adjustment groove (4011) being located at one side of the slide seat (401), and the second adjustment groove (4012) penetrating the slide seat (401); a leveling knife (402), the leveling knife (402) being slidably disposed in the first adjustment slot (4011); A top piece (403), the top piece (403) is slidably arranged in the first adjustment groove (4011) and is located on one side of the leveling knife (402), the top piece (403) is used to install the pre-grinding piece (5), the pre-grinding piece (5) has a clearance groove (501), and the leveling knife (402) is located in the clearance groove (501).

4. A pipe processing beveling machine according to claim 2, characterized in that: The cutting knife (302) has a mounting hole (3021) and a fixing hole (3022), the mounting hole (3021) and the fixing hole (3022) being located at the middle and end of the cutting knife (302) respectively, the pressing member (303) having a fixing portion (3034) and an abutting portion (3032), the fixing portion (3034) being pressed into the fixing hole (3022), the fixing portion (3034) having a notch (3033), the bottom wall of the fixing hole (3022) having a protrusion (3023), the notch (3033) being used to accommodate the protrusion (3023), and the abutting portion (3032) abuts against the cutting knife (302).

5. A pipe processing beveling machine according to claim 2, characterized in that: The locking member (304) has a first locking portion (3041), the locking hole (3013) has a first locking groove (3035), and the locking hole (3031) has a second locking groove (3036). After the locking member (304) rotates, the first locking portion (3041) slides into or out of the first locking groove (3035). The locking member (304) has an inner cavity (3042) and an arc-shaped groove (3043). The inner cavity (3042) leads to the arc-shaped groove (3043), and the arc-shaped groove (3043) leads to the second locking groove (3036). The locking member (304) further comprises: a positioning bead (3044), the positioning bead (3044) being movably disposed in the arc-shaped groove (3043), and the positioning bead (3044) extending from the arc-shaped groove (3043) into the second locking groove (3036) after movement; An unlocking member (3045), the unlocking member (3045) being slidably disposed in the inner cavity (3042), the unlocking member (3045) having an unlocking groove (3046), and after the unlocking member (3045) slides, the positioning bead (3044) slides into or out of the unlocking groove (3046); A first elastic member (3047), wherein one end of the first elastic member (3047) acts on the inner cavity (3042) and the other end of the first elastic member (3047) acts on the unlocking member (3045) to provide a force for the locking member (304) to slide out of the inner cavity (3042).

6. A pipe processing beveling machine according to claim 3, characterized in that: The leveling knife (402) has a threaded hole (4021), and the top piece (403) comprises: A first support member (4031), the first support member (4031) being slidably disposed in the first adjustment slot (4011); a second support member (4032), the second support member (4032) being movably arranged relative to the first support member (4031), the pre-grinding member (5) being arranged on the second support member (4032), and the second support member (4032) having a connecting hole (4033); a fixing bolt (4034), wherein the fixing bolt (4034) passes through the connecting hole (4033) and extends into the threaded hole (4021); A second elastic member (4035), wherein one end of the second elastic member (4035) acts on the first support member (4031), and the other end of the second elastic member (4035) acts on the second support member (4032), providing a force to move the second support member (4032) away from the first support member (4031).

7. A pipe processing beveling machine according to claim 3, characterized in that: The leveling knife (402) and the pre-grinding piece (5) both have a conical grinding surface (502); the support frame (2) is a circular support frame (2); and the conical grinding surface (502) is eccentrically arranged with respect to the support frame (2).

8. The pipe beveling machine according to claim 1, characterized in that: Also includes: A translation frame (7), wherein the translation frame (7) is movably arranged on the frame (1), and the support frame (2) is rotatably arranged on the translation frame (7); a first pipe support frame (8), the first pipe support frame (8) being located on one side of the frame (1); a second pipe support frame (9), the second pipe support frame (9) being located on a side of the first pipe support frame (8) away from the frame (1); A pipe support member (10), wherein the number of the pipe support members (10) is two and they are respectively slidably arranged on the first pipe support frame (8) and the second pipe support frame (9), and the pipe support members (10) are used to support the pipeline; A pipe fixing member (11), wherein the pipe fixing members (11) are in plurality and are respectively arranged on the first pipe supporting frame (8) and the second pipe supporting frame (9) and are used for fixing the pipe.

9. A pipe processing beveling machine according to claim 8, characterized in that: The first pipe support frame (8) and the second pipe support frame (9) both comprise: A base (801), the base (801) being located on one side of the frame (1); A lifting platform (802), wherein the lifting platform (802) is lifted and arranged on the base (801), and the pipe-bearing member (10) is slidably arranged on the lifting platform (802).

10. A pipe processing beveling machine according to claim 9, characterized in that: The pipe support (10) comprises: A pipe bearing seat (1001), wherein the pipe bearing seat (1001) has a slide rail (1002); A sliding member (1003), the sliding member (1003) is slidably arranged on the slide rail (1002), there are two sliding members (1003), a fixed space (1004) is formed between the two sliding members (1003), and the fixed space (1004) is used to fix the pipeline.

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