A high-precision plasma bevel cutting device

Abstract

The invention relates to the technical field of plasma cutting, and discloses a high-precision plasma groove cutting device, comprising a cutting table, a moving frame arranged above the cutting table, a swinging assembly arranged on one side of the moving frame, an adjusting mechanism installed on the outer wall of the swinging assembly, and a plasma cutting gun installed inside the adjusting mechanism, wherein the swinging assembly comprises a moving block fixedly installed on the output end of the moving frame, the outer wall of the moving block is rotatably connected with a semi-gear base, a first servo motor is operated by a pushing assembly, the output shaft of the first servo motor drives the driven bevel gear to rotate clockwise through a single-tooth bevel gear, and the pushing frame moves outward along a track frame under the transmission of two pushing gears and a rack, so that the lower part of the plasma cutting gun is tilted outward, and a clamping ring follows the sliding and clamping to form an outward slope, thereby better controlling the cutting depth and groove angle, and achieving the effect of improving production efficiency and ensuring cutting quality.

Description

Technical Field

[0001] The present invention relates to the technical field of plasma cutting, and particularly relates to a high-precision plasma bevel cutting device. Background Art

[0002] A high-precision plasma bevel cutting device is an automated cutting equipment designed specifically for metal processing. This device is typically used for high-precision bevel cutting of metal plates or pipes to facilitate subsequent processes such as welding. Bevel cutting refers to the process of machining specific-shaped and angled edges or surfaces on metal workpieces in preparation for welding. Plasma cutting technology is a process that locally heats materials through high-speed plasma gas, causing the materials to reach the melting point and be blown away by the high-speed air flow, thereby achieving cutting.

[0003] In the patent with the publication number CN102699592A, a plasma cutting linear bevel swing device is disclosed. An arc-shaped rack is installed on an arc-shaped guide rail. The upper and lower guide surfaces of the arc-shaped guide rail are V-shaped. A rotating plate is fitted with the upper and lower guide surfaces of the arc-shaped guide rail through three V-shaped cross-section rollers arranged in an inverted "pin" shape; a reduction motor is installed on a bracket, and a gear meshing with the arc-shaped rack is installed on its output shaft; a holder seat for clamping a plasma cutting torch is connected to the rotating plate through a connecting bracket. The line connecting the cutting point after the plasma cutting torch is clamped and the center of the arc-shaped guide rail is horizontal and lies in the same vertical plane. The present invention can be electrically controlled according to the bevel angle requirements. The rotation center of the cutting torch remains unchanged after rotation, and there is no longer a need to compensate for the offset through the system. It has a high degree of automation, accurate angle positioning, high working efficiency, and good cutting quality. The electric control of the present invention can be achieved by using a common motor, and the manufacturing cost of the equipment is low.

[0004] The prior art has the following defects:

[0005] Insufficient precision in adjusting the cutting bevel angle: The selection of the cutting bevel angle depends on the thickness of the material, the type of welding, and the requirements of subsequent welding processes. Common types include V-shaped bevels, double V-shaped bevels, X-shaped bevels, etc., and the angle is generally between 25° and 45°. If the precision in adjusting the cutting bevel angle is insufficient, it will result in the bevel shape not meeting the design requirements, causing problems such as uneven width and poor straightness. Therefore, a structure for precisely adjusting the cutting bevel angle needs to be set up to better control the cutting depth and bevel angle, reduce problems of uneven cutting and uneven edges, and achieve the effects of improving production efficiency and ensuring cutting quality.

[0006] Insufficient support when cutting bevels: Insufficient support will cause the workpiece to shake during the cutting process, affecting the straightness and verticality of the cutting, thereby reducing the cutting accuracy. Due to unstable support, frequent adjustments and corrections are required during the cutting process, which will significantly extend the cutting time and reduce work efficiency. It will also cause the cutting equipment to bear additional pressure and vibration, accelerate the wear of the cutting head and transmission system, and shorten the service life of the equipment. Therefore, it is necessary to set up a structure to strengthen the support of the cutting gun at commonly used cutting angles to provide more stable support and reduce shaking, so as to improve cutting accuracy and efficiency and extend the service life of the equipment. ‌‌‌ Summary of the invention

[0007] In view of the problems in the prior art of insufficient precision in adjusting the cutting groove angle and insufficient support strength when cutting the groove, a high-precision plasma groove cutting device is proposed.

[0008] The present application provides a high-precision plasma bevel cutting device, the purpose of which is to: by setting a pushing component and a limiting component, accurately adjust the angle of the cutting bevel, better control the cutting depth and bevel angle, reduce the problems of uneven cutting and uneven edges, so as to improve production efficiency and ensure cutting quality; by setting a support component, strengthen the support for the cutting gun at commonly used cutting angles to provide more stable support and reduce shaking, so as to improve cutting accuracy and efficiency and extend the service life of the equipment.

[0009] The technical solution of the present invention is: a high-precision plasma bevel cutting device, comprising a cutting table, a mobile frame arranged above the cutting table, a swing assembly arranged on one side of the mobile frame, an adjustment mechanism installed on the outer wall of the swing assembly, and a plasma cutting gun installed inside the adjustment mechanism, wherein the swing assembly comprises a moving block fixedly installed on the output end of the moving frame, and the outer wall of the moving block is rotatably connected to a half gear base;

[0010] The adjustment mechanism includes a fixing frame fixedly mounted on the outer wall of the semi-gear base and two track frames, the outer wall of the fixing frame is movably mounted with a limiting assembly and a supporting assembly, the inner walls of the two track frames are fixedly connected with racks, a pushing assembly is arranged between the two racks, the pushing assembly and the end of the fixing frame away from the semi-gear base are rotatably connected with a clamping ring, and the inner walls of the two clamping rings are movably connected with the outer wall of the plasma cutting gun.

[0011] By adopting the above scheme, the steel structure is placed on the cutting table, and the moving frame is operated to drive the moving block, so that the plasma cutting gun cuts the steel structure under the clamping support of the clamping ring and the limit assembly. When bevel cutting is required, if the bevel is an inner bevel, that is, the cutting direction is from the outside to the inside, or if the bevel is an outer bevel, that is, the cutting direction is from the inside to the outside, the lower end of the plasma cutting gun can be pushed by the pushing assembly to tilt the plasma cutting gun, and the limit assembly is linked to support the plasma cutting gun when the lower side of the plasma cutting gun is tilted inward or outward at the maximum angle.

[0012] Furthermore, the pushing assembly includes a pushing frame arranged between two track frames, the inner wall of the pushing frame is rotatably connected to two rotating shafts, the outer walls of the two rotating shafts are respectively fixedly connected to two mutually meshing pushing gears, and the two pushing gears are respectively meshed with two racks.

[0013] Furthermore, a first servo motor is fixedly connected to the top of the pushing frame, and a single-tooth helical gear is fixedly connected to the output end of the first servo motor, one end of one of the rotating shafts is fixedly connected to a driven helical gear, and the driven helical gear is meshed with the single-tooth helical gear, and a protrusion is fixedly connected to the outer wall of the output end of the first servo motor.

[0014] By adopting the above scheme, through the setting of the pushing component, when bevel cutting is required, if the bevel is an inner bevel, that is, the cutting direction is from the outside to the inside, the first servo motor is operated, and the output shaft of the first servo motor drives the driven bevel gear to rotate clockwise through the single-tooth bevel gear, and the pushing frame moves outward along the track frame under the transmission of the two pushing gears and the rack, so that the lower part of the plasma cutting gun tilts outward, and the clamping ring follows and slides and clamps to form an outward slope. If the bevel is an outer bevel, that is, the cutting direction is from the inside to the outside, the first servo motor is operated to drive the driven bevel gear to rotate counterclockwise, and the pushing frame moves inward accordingly, so that the lower part of the plasma cutting gun tilts inward, and the clamping ring follows and slides and clamps to form an inward slope, so as to better control the cutting depth and bevel angle, reduce the problems of uneven cutting and uneven edges, and achieve the effect of improving production efficiency and ensuring cutting quality.

[0015] Furthermore, the limit assembly includes two spring hinges installed on the outer wall of the fixed frame, the inner walls of the two spring hinges are respectively fixedly connected with an upper limit block and a lower limit block, the inner walls of the upper limit block and the lower limit block are both provided with limit grooves, and the inner walls of the two limit grooves are overlapped with the outer wall of the plasma cutting gun.

[0016] Furthermore, the limit assembly also includes two movable grooves opened on the inner wall of the fixed frame, and the inner walls of the two movable grooves are respectively movably connected with a first pull rod and a second pull rod, the outer walls of the first pull rod and the second pull rod are overlapped with the protrusion, and connecting ropes are fixedly connected between the end of the first pull rod away from the protrusion and the upper limit block, and between the end of the second pull rod away from the protrusion and the lower limit block.

[0017] By adopting the above scheme, through the set limit assembly, when bevel cutting is required, if the bevel is an inner bevel, that is, the cutting direction is from the outside to the inside, while the push frame moves outward, the convex block on the output shaft of the first servo motor squeezes the first pull rod to move downward, and the first pull rod drives the upper limit block to flip at the spring hinge through the connecting rope, so that the upper limit block limits the plasma cutting gun, and at the same time, the limit groove supports the plasma cutting gun when the lower part of the plasma cutting gun tilts outward at the maximum angle. If the bevel is an outer bevel, that is, the cutting direction is from the inside to the outside, the convex block squeezes the second pull rod to move downward, and the lower limit block flips at the spring hinge, so that the lower limit block limits the plasma cutting gun, and at the same time, the plasma cutting gun is supported when the lower part of the plasma cutting gun tilts inward at the maximum angle, so as to achieve a stable cutting effect.

[0018] Furthermore, the support assembly includes two through-grooves opened on the inner wall of the fixed frame, the inner walls of the two through-grooves are rotatably connected with a rotating shaft, a connecting rod is fixedly connected between the two rotating shafts, and the outer walls of the two rotating shafts are fixedly connected with support blocks.

[0019] Furthermore, two first supporting surfaces and two second supporting surfaces are symmetrically arranged on the surface of the supporting block, and the two first supporting surfaces and the two second supporting surfaces are overlapped with the outer walls of the upper limit block and the lower limit block respectively.

[0020] Furthermore, the support assembly also includes a rotating cylinder fixedly connected to the outer wall of the fixing frame, and the output end of the rotating cylinder is fixedly connected to one end of one of the rotating shafts.

[0021] By adopting the above scheme, by running the rotating cylinder, the output end of the rotating cylinder drives the support block to rotate in the penetration groove through the rotating shaft. When the first supporting surface contacts the upper limit block or the lower limit block, the plasma cutting gun at an angle of 35° can be supported. When the second supporting surface contacts the upper limit block or the lower limit block, the plasma cutting gun at an angle of 25° can be supported.

[0022] Furthermore, the swing assembly also includes a second servo motor fixedly connected to the bottom of the moving block, and the output shaft of the second servo motor is fixedly connected to a single-tooth transmission gear, and the single-tooth transmission gear is meshed with the half-gear base.

[0023] By adopting the above scheme, by running the second servo motor, the output shaft of the second servo motor drives the half gear base to rotate on the moving block through the single-tooth transmission gear, thereby cutting the angle of the steel structure.

[0024] Beneficial effects of the present invention:

[0025] Through the setting of the pushing component, when bevel cutting is required, if the bevel is an inner bevel, that is, the cutting direction is from the outside to the inside, the first servo motor is operated, and the output shaft of the first servo motor drives the driven bevel gear to rotate clockwise through the single-tooth bevel gear, and the pushing frame moves outward along the track frame under the transmission of the two pushing gears and the rack, so that the lower part of the plasma cutting gun tilts outward, and the clamping ring follows to slide and clamp to form an outward slope. If the bevel is an outer bevel, that is, the cutting direction is from the inside to the outside, the first servo motor is operated to drive the driven bevel gear to rotate counterclockwise, and the pushing frame moves inward accordingly, so that the lower part of the plasma cutting gun tilts inward, and the clamping ring follows to slide and clamp to form an inward slope, thereby better controlling the cutting depth and bevel angle, reducing the problems of uneven cutting and uneven edges, and achieving the effect of improving production efficiency and ensuring cutting quality.

[0026] By setting the limit assembly, when bevel cutting is required, if the bevel is an inner bevel, that is, the cutting direction is from the outside to the inside, while the push frame moves outward, the protrusion on the output shaft of the first servo motor squeezes the first pull rod to move downward, and the first pull rod drives the upper limit block to flip at the spring hinge through the connecting rope, so that the upper limit block limits the plasma cutting gun, and at the same time, the plasma cutting gun is supported by the limit groove when the lower part of the plasma cutting gun tilts outward at the maximum angle; if the bevel is an outer bevel, that is, the cutting direction is from the inside to the outside, the protrusion squeezes the second pull rod to move downward, and the lower limit block flips at the spring hinge, so that the lower limit block limits the plasma cutting gun, and at the same time, the plasma cutting gun is supported when the lower part of the plasma cutting gun tilts inward at the maximum angle, so as to achieve a stable cutting effect.

[0027] By running the rotary cylinder, the output end of the rotary cylinder drives the support block to rotate in the penetration groove through the rotating shaft. When the first support surface contacts the upper limit block or the lower limit block, it can support the plasma cutting gun at a 35° angle. When the second support surface contacts the upper limit block or the lower limit block, it can support the plasma cutting gun at a 25° angle, thereby achieving the effect of improving cutting accuracy and efficiency and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the swing assembly of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the regulating mechanism of the present invention;

[0031] Figure 4 It is a schematic diagram of the explosion structure of the regulating mechanism of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the implementation component of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the limit assembly of the present invention;

[0034] Figure 7 It is a schematic cross-sectional view of the structure of the movable groove of the present invention;

[0035] Figure 8 It is a schematic diagram of the structure of the plasma cutting gun of the present invention in a downwardly inclined state;

[0036] Fig. 9 It is a schematic diagram of the structure of the plasma cutting gun of the present invention in a state of lower inward tilt;

[0037] Fig.10 It is a schematic cross-sectional view of the structure of the penetration groove of the present invention;

[0038] Fig.11 It is a structural schematic diagram of the support assembly of the present invention;

[0039] Fig.12 Schematic diagram of different position states of the support block of the present invention;

[0040] Fig.13 It is a structural schematic diagram of the second servo motor of the present invention.

[0041] In the figure:

[0042] 1. Cutting table; 2. Moving frame; 3. Swinging assembly; 31. Moving block; 32. Half gear base; 33. Single-tooth transmission gear; 34. Second servo motor; 4. Adjusting mechanism; 41. Fixed frame; 42. Limiting assembly; 421. Upper limit block; 422. Lower limit block; 423. Limiting groove; 424. Spring hinge; 425. Connecting rope; 426. First pull rod; 427. Second pull rod; 428. Movable groove; 43. Clamping ring; 44. Support assembly; 441, rotary cylinder; 442, rotary shaft; 443, connecting rod; 444, support block; 445, penetration groove; 446, first support surface; 447, second support surface; 45, pushing assembly; 451, pushing frame; 452, first servo motor; 453, bump; 454, single-tooth bevel gear; 455, driven bevel gear; 456, pushing gear; 457, rotating shaft; 46, track frame; 47, rack; 5, plasma cutting gun. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0044] Example 1, reference Figure 1 - Fig. 9 , which is the first embodiment of the present invention, provides a high-precision plasma bevel cutting device, including a cutting table 1, a mobile frame 2 arranged above the cutting table 1, a swing assembly 3 arranged on one side of the mobile frame 2, an adjustment mechanism 4 installed on the outer wall of the swing assembly 3, and a plasma cutting gun 5 installed inside the adjustment mechanism 4, the swing assembly 3 includes a moving block 31 fixedly installed on the output end of the moving frame 2, and the outer wall of the moving block 31 is rotatably connected to a half gear base 32.

[0045] Reference Figure 3 - Figure 4 The adjustment mechanism 4 includes a fixing frame 41 and two track frames 46 fixedly mounted on the outer wall of the semi-gear base 32. A limit assembly 42 and a support assembly 44 are movably mounted on the outer wall of the fixing frame 41. The inner walls of the two track frames 46 are fixedly connected with racks 47. A pushing assembly 45 is arranged between the two racks 47. The pushing assembly 45 and one end of the fixing frame 41 away from the semi-gear base 32 are rotatably connected with a clamping ring 43. The inner walls of the two clamping rings 43 are movably connected with the outer wall of the plasma cutting gun 5.

[0046] Specifically, the fixing frame 41 fixes the upper end of the plasma cutting gun 5, the pushing assembly 45 fixes and pushes the lower end of the plasma cutting gun 5 to run along the track frame 46, the clamping ring 43 can be tilted as the plasma cutting gun 5 is tilted, and the clamping ring 43 can slide on the plasma cutting gun 5 to adapt to the tilt of the plasma cutting gun 5, providing clamping and fixation for the plasma cutting gun 5, and the adjustment mechanism 4 is located on the half-gear base 32, and the half-gear base 32 moves on the cutting table 1 along with the moving block 31 controlled by the moving frame 2.

[0047] By placing the steel structure on the cutting table 1, the moving frame 2 is operated to drive the moving block 31, so that the plasma cutting gun 5 cuts the steel structure under the clamping support of the clamping ring 43 and the limit assembly 42. When bevel cutting is required, if the bevel is an inner bevel, that is, the cutting direction is from the outside to the inside, or if the bevel is an outer bevel, that is, the cutting direction is from the inside to the outside, the lower end of the plasma cutting gun 5 can be pushed by the pushing assembly 45 to tilt the plasma cutting gun 5, and the limit assembly 42 is linked to support the plasma cutting gun 5 when the lower side of the plasma cutting gun 5 is tilted inward or outward at the maximum angle.

[0048] Reference Figure 5 - Figure 6 The pushing assembly 45 includes a pushing frame 451 arranged between two track frames 46, the inner wall of the pushing frame 451 is rotatably connected to two rotating shafts 457, the outer walls of the two rotating shafts 457 are respectively fixedly connected to two mutually meshing pushing gears 456, the two pushing gears 456 are respectively meshed with two racks 47, the top of the pushing frame 451 is fixedly connected to a first servo motor 452, the output end of the first servo motor 452 is fixedly connected to a single-tooth bevel gear 454, one end of one of the rotating shafts 457 is fixedly connected to a driven bevel gear 455, the driven bevel gear 455 is meshed with the single-tooth bevel gear 454, and a protrusion 453 is fixedly connected to the outer wall of the output end of the first servo motor 452.

[0049] Specifically, the transmission ratio of the single-tooth bevel gear 454 and the driven bevel gear 455 is 10:1, that is, the single-tooth bevel gear 454 rotates one circle, the driven bevel gear 455 rotates 1 / 10 circle, and the pushing gear 456 moves one grid on the rack 47 on the track frame 46. The adjustment angle is 5°, which greatly improves the accuracy of adjusting the cutting groove angle.

[0050] Through the setting of the pushing assembly 45, when it is necessary to perform bevel cutting, if the bevel is an inner bevel, that is, the cutting direction is from the outside to the inside, the first servo motor 452 is operated, and the output shaft of the first servo motor 452 drives the driven bevel gear 455 to rotate clockwise through the single-tooth bevel gear 454, and the pushing frame 451 moves outward along the track frame 46 under the transmission of the two pushing gears 456 and the rack 47, so that the lower part of the plasma cutting gun 5 tilts outward, and the clamping ring 43 slides and clamps to form an outward slope. If the bevel is an outer bevel, that is, the cutting direction is from the inside to the outside, the first servo motor 452 is operated to drive the driven bevel gear 455 to rotate counterclockwise, and the pushing frame 451 moves inward accordingly, so that the lower part of the plasma cutting gun 5 tilts inward, and the clamping ring 43 slides and clamps to form an inward slope, so as to better control the cutting depth and bevel angle, reduce the problems of uneven cutting and uneven edges, and achieve the effect of improving production efficiency and ensuring cutting quality.

[0051] Reference Figure 6 - Figure 7 The limit assembly 42 includes two spring hinges 424 installed on the outer wall of the fixing frame 41, the inner walls of the two spring hinges 424 are respectively fixedly connected with the upper limit block 421 and the lower limit block 422, the inner walls of the upper limit block 421 and the lower limit block 422 are both provided with limit grooves 423, the inner walls of the two limit grooves 423 are overlapped with the outer wall of the plasma cutting gun 5, the limit assembly 42 also includes two movable grooves 428 provided on the inner wall of the fixing frame 41, the inner walls of the two movable grooves 428 are respectively movably connected with the first pull rod 426 and the second pull rod 427, the outer walls of the first pull rod 426 and the second pull rod 427 are overlapped with the protrusion 453, and a connecting rope 425 is fixedly connected between the end of the first pull rod 426 away from the protrusion 453 and the upper limit block 421, and between the end of the second pull rod 427 away from the protrusion 453 and the lower limit block 422.

[0052] By means of the limit assembly 42, when groove cutting is required, if the groove is an inner groove, that is, the cutting direction is from the outer side to the inner side, while the push frame 451 moves outward, the protrusion 453 on the output shaft of the first servo motor 452 squeezes the first pull rod 426 to move downward, and the first pull rod 426 drives the upper limit block 421 to flip at the spring hinge 424 through the connecting rope 425, thereby releasing the limit of the upper limit block 421 on the plasma cutting gun 5, and at the same time, the plasma cutting gun 5 is When the lower portion of the plasma cutting gun 5 is tilted outward at the maximum angle, the limiting groove 423 supports the plasma cutting gun 5. If the groove is an outer groove, that is, the cutting direction is from the inside to the outside, the protrusion 453 squeezes the second pulling rod 427 to move downward, and the lower limiting block 422 turns over at the spring hinge 424, releasing the limiting of the plasma cutting gun 5 by the lower limiting block 422. At the same time, the plasma cutting gun 5 is supported when the lower portion of the plasma cutting gun 5 is tilted inward at the maximum angle, thereby achieving a stable cutting effect.

[0053] During use, the steel structure is placed on the cutting table 1, and the moving frame 2 is operated to drive the moving block 31, so that the plasma cutting gun 5 cuts the steel structure under the clamping support of the clamping ring 43, the upper limit block 421 and the lower limit block 422. When bevel cutting is required, if the bevel is an inner bevel, that is, the cutting direction is from the outside to the inside, the first servo motor 452 is operated, and the output shaft of the first servo motor 452 drives the driven bevel gear 455 to rotate clockwise through the single-tooth bevel gear 454, and the pushing frame 451 moves outward along the track frame 46 under the transmission of the two pushing gears 456 and the rack 47, so that the lower part of the plasma cutting gun 5 tilts outward, and the clamping ring 43 slides and clamps to form an outward slope. When the pushing frame 451 moves outward, the protrusion 453 on the output shaft of the first servo motor 452 squeezes the first pulling rod 426 to move downward, and the first pulling rod 426 drives the upper limit block 421 to flip at the spring hinge 424 through the connecting rope 425, and the upper limit block 421 is released from the limit of the plasma cutting gun 5. At the same time, the limit groove 423 supports the plasma cutting gun 5 when the lower part of the plasma cutting gun 5 tilts outward at the maximum angle. If the groove is an outer groove, that is, the cutting direction is from the inside to the outside, the first servo motor 452 is driven to rotate counterclockwise, and the push frame 451 moves inward accordingly, so that the lower part of the plasma cutting gun 5 tilts inward, and the clamping ring 43 slides and clamps accordingly to form an inward slope; at the same time, the protrusion 453 squeezes the second pulling rod 427 to move downward, and the lower limit block 422 flips at the spring hinge 424, releasing the limit of the lower limit block 422 on the plasma cutting gun 5, and at the same time, the plasma cutting gun 5 is supported when the lower part of the plasma cutting gun 5 tilts inward at the maximum angle.

[0054] Example 2, reference Fig.10 - Fig.12, which is the second embodiment of the present invention, and which is different from the first embodiment in that: Fig.10 - Fig.11 The support assembly 44 includes two through-grooves 445 opened on the inner wall of the fixed frame 41, the inner walls of the two through-grooves 445 are rotatably connected with a rotating shaft 442, a connecting rod 443 is fixedly connected between the two rotating shafts 442, and the outer walls of the two rotating shafts 442 are fixedly connected with a support block 444, and the surface of the support block 444 is symmetrically provided with two first supporting surfaces 446 and two second supporting surfaces 447, the two first supporting surfaces 446 and the two second supporting surfaces 447 are overlapped with the outer walls of the upper limit block 421 and the lower limit block 422 respectively, and the support assembly 44 also includes a rotating cylinder 441 fixedly connected to the outer wall of the fixed frame 41, and the output end of the rotating cylinder 441 is fixedly connected to one end of one of the rotating shafts 442.

[0055] Specifically, the support surface of the support block 444 can be set to multiple, not limited to the first support surface 446 and the two second support surfaces 447. The connecting rod 443 set between the two rotating shafts 442 can avoid contact with the limiting assembly 42 while allowing the rotating cylinder 441 to drive the two support blocks 444 to rotate through the two rotating shafts 442 at the same time.

[0056] During use, in order to strengthen the support for the plasma cutting gun 5 with commonly used cutting angles such as 25° and 35°, the rotating cylinder 441 can be operated while pushing the push frame 451. The output end of the rotating cylinder 441 drives the supporting block 444 to rotate in the penetration groove 445 through the rotating shaft 442. When the first supporting surface 446 contacts the upper limit block 421 or the lower limit block 422, the plasma cutting gun 5 with a 35° angle can be supported. When the second supporting surface 447 contacts the upper limit block 421 or the lower limit block 422, the plasma cutting gun 5 with a 25° angle can be supported. The remaining structures are the same as those in Example 1.

[0057] Example 3, reference Fig.13 , which is the second embodiment of the present invention, and which is different from the first embodiment in that: Fig.13 The swing assembly 3 also includes a second servo motor 34 fixedly connected to the bottom of the moving block 31 , and the output shaft of the second servo motor 34 is fixedly connected to a single-tooth transmission gear 33 , and the single-tooth transmission gear 33 is meshed with the half-gear base 32 .

[0058] During use, in order to enable the plasma cutting gun 5 to cut the angle of the steel structure, the second servo motor 34 can be operated, and the output shaft of the second servo motor 34 drives the half gear base 32 to rotate on the moving block 31 through the single-tooth transmission gear 33, thereby playing the role of cutting the angle of the steel structure. The rest of the structure is the same as that of Example 2.

[0059] Working principle of the present invention:

[0060] During operation, the steel structure is placed on the cutting table 1 , and the moving frame 2 is operated to drive the moving block 31 , so that the plasma cutting gun 5 cuts the steel structure under the clamping support of the clamping ring 43 , the upper limit block 421 and the lower limit block 422 .

[0061] When bevel cutting is required, if the bevel is an inner bevel, that is, the cutting direction is from the outer side to the inner side, the first servo motor 452 is operated, and the output shaft of the first servo motor 452 drives the driven bevel gear 455 to rotate clockwise through the single-tooth bevel gear 454, and the push frame 451 moves outward along the track frame 46 under the transmission of the two push gears 456 and the rack 47, so that the lower part of the plasma cutting gun 5 tilts outward, and the clamping ring 43 slides and clamps to form an outward slope.

[0062] When the pushing frame 451 moves outward, the protrusion 453 on the output shaft of the first servo motor 452 squeezes the first pulling rod 426 to move downward, and the first pulling rod 426 drives the upper limit block 421 to flip at the spring hinge 424 through the connecting rope 425, thereby releasing the limit of the plasma cutting gun 5 by the upper limit block 421. At the same time, when the plasma cutting gun 5 is tilted outward at the maximum angle below, the plasma cutting gun 5 is supported by the limiting groove 423.

[0063] If the groove is an outer groove, that is, the cutting direction is from the inside to the outside, the first servo motor 452 is operated to drive the driven bevel gear 455 to rotate counterclockwise, and the push frame 451 moves inward accordingly, so that the lower part of the plasma cutting gun 5 tilts inward, and the clamping ring 43 slides and clamps accordingly, forming an inward slope; at the same time, the protrusion 453 squeezes the second pulling rod 427 to move downward, and the lower limit block 422 flips at the spring hinge 424, releasing the limit of the lower limit block 422 on the plasma cutting gun 5, and at the same time supporting the plasma cutting gun 5 when the lower part of the plasma cutting gun 5 tilts inward at the maximum angle.

[0064] When the pushing frame 451 moves, it pushes the first pulling rod 426 and the second pulling rod 427 to slide in the corresponding movable groove 428 to prevent the first pulling rod 426 and the second pulling rod 427 from blocking the pushing frame 451 .

[0065] In order to strengthen the support for the plasma cutting gun 5 with commonly used cutting angles such as 25° and 35°, the rotating cylinder 441 can be operated while pushing the pushing frame 451. The output end of the rotating cylinder 441 drives the supporting block 444 to rotate in the penetrating groove 445 via the rotating shaft 442. When the first supporting surface 446 contacts the upper limit block 421 or the lower limit block 422, the plasma cutting gun 5 with an angle of 35° can be supported. When the second supporting surface 447 contacts the upper limit block 421 or the lower limit block 422, the plasma cutting gun 5 with an angle of 25° can be supported.

[0066] In order to enable the plasma cutting gun 5 to cut the angle of the steel structure, the second servo motor 34 can be operated, and the output shaft of the second servo motor 34 drives the half gear base 32 to rotate on the moving block 31 through the single-tooth transmission gear 33, thereby cutting the angle of the steel structure.

[0067] 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 high-precision plasma bevel cutting device, comprising a cutting table (1), a moving frame (2) arranged above the cutting table (1), a swing assembly (3) arranged on one side of the moving frame (2), an adjustment mechanism (4) installed on the outer wall of the swing assembly (3), and a plasma cutting gun (5) installed inside the adjustment mechanism (4), characterized in that: The swing assembly (3) comprises a moving block (31) fixedly mounted on the output end of the moving frame (2), wherein the outer wall of the moving block (31) is rotatably connected to a half gear base (32); The adjustment mechanism (4) comprises a fixing frame (41) fixedly mounted on the outer wall of the half gear base (32) and two track frames (46); a limit assembly (42) and a support assembly (44) are movably mounted on the outer wall of the fixing frame (41); the inner walls of the two track frames (46) are fixedly connected with racks (47); a pushing assembly (45) is arranged between the two racks (47); the pushing assembly (45) and one end of the fixing frame (41) away from the half gear base (32) are rotatably connected with a clamping ring (43); the inner walls of the two clamping rings (43) are movably connected to the outer wall of the plasma cutting gun (5); The limit assembly (42) comprises two spring hinges (424) mounted on the outer wall of the fixing frame (41); the inner walls of the two spring hinges (424) are respectively fixedly connected with an upper limit block (421) and a lower limit block (422); the inner walls of the upper limit block (421) and the lower limit block (422) are both provided with limit grooves (423); the inner walls of the two limit grooves (423) are both overlapped with the outer wall of the plasma cutting gun (5); The support assembly (44) comprises two through-grooves (445) formed on the inner wall of the fixing frame (41); the inner walls of the two through-grooves (445) are rotatably connected to a rotating shaft (442); a connecting rod (443) is fixedly connected between the two rotating shafts (442); and the outer walls of the two rotating shafts (442) are fixedly connected to a supporting block (444); The surface of the support block (444) is symmetrically provided with two first support surfaces (446) and two second support surfaces (447), and the two first support surfaces (446) and the two second support surfaces (447) are overlapped with the outer walls of the upper limit block (421) and the lower limit block (422) respectively.

2. The high-precision plasma bevel cutting device according to claim 1, characterized in that: The pushing assembly (45) comprises a pushing frame (451) arranged between two track frames (46); the inner wall of the pushing frame (451) is rotatably connected to two rotating shafts (457); the outer walls of the two rotating shafts (457) are respectively fixedly connected to two mutually meshing pushing gears (456); the two pushing gears (456) are respectively meshed with two racks (47).

3. The high-precision plasma bevel cutting device according to claim 2, characterized in that: A first servo motor (452) is fixedly connected to the top of the pushing frame (451); a single-tooth helical gear (454) is fixedly connected to the output end of the first servo motor (452); one end of one of the rotating shafts (457) is fixedly connected to a driven helical gear (455); the driven helical gear (455) is meshed with the single-tooth helical gear (454); and a protrusion (453) is fixedly connected to the outer wall of the output end of the first servo motor (452).

4. The high-precision plasma bevel cutting device according to claim 1, characterized in that: The limit assembly (42) further comprises two movable grooves (428) formed on the inner wall of the fixing frame (41), the inner walls of the two movable grooves (428) being movably connected with a first pull rod (426) and a second pull rod (427), respectively; the outer walls of the first pull rod (426) and the second pull rod (427) are both overlapped with the protrusion (453), and a connecting rope (425) is fixedly connected between an end of the first pull rod (426) away from the protrusion (453) and the upper limit block (421), and between an end of the second pull rod (427) away from the protrusion (453) and the lower limit block (422).

5. The high-precision plasma bevel cutting device according to claim 1, characterized in that: The support assembly (44) further comprises a rotating cylinder (441) fixedly connected to the outer wall of the fixing frame (41), and an output end of the rotating cylinder (441) is fixedly connected to one end of one of the rotating shafts (442).

6. The high-precision plasma bevel cutting device according to claim 1, characterized in that: The swing assembly (3) further comprises a second servo motor (34) fixedly connected to the bottom of the moving block (31), the output shaft of the second servo motor (34) being fixedly connected to a single-tooth transmission gear (33), and the single-tooth transmission gear (33) being meshed with the half-gear base (32).

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