CN118404174B

CN118404174B - A plasma cutting machine for steel pipe cutting

Info

Publication number: CN118404174B
Application number: CN202410854035.5A
Authority: CN
Inventors: 李丽红; 张发海; 张靖淞
Original assignee: Jiangsu College of Safety Technology
Current assignee: Jiangsu College of Safety Technology
Priority date: 2024-06-28
Filing date: 2024-06-28
Publication date: 2024-09-27
Anticipated expiration: 2044-06-28
Also published as: CN118404174A

Abstract

The application relates to the technical field of plasma cutting machines, in particular to a plasma cutting machine for cutting steel pipes, which comprises an operation platform, wherein a plasma cutter is arranged on the outer side of the operation platform, a plasma gun is arranged on the plasma cutter, a clamp for clamping pipes is arranged on the operation platform, and a bearing mechanism is arranged on the operation platform and close to the position of the plasma gun. The application is provided with the bearing mechanism, and the clamping component of the clamping component is used for clamping and fixing the pipe, so that the possibility of rolling the pipe in the cutting process is effectively reduced, the possibility of cutting line deviation in the plasma cutting process is reduced, the stability of the plasma cutting machine when cutting the pipe such as a steel column, a steel pipe and the like is improved, and the possibility of direct falling of the part of the pipe which is not clamped by the clamp after cutting is reduced.

Description

A plasma cutting machine for steel pipe cutting

Technical Field

The application relates to the technical field of plasma cutting machines, in particular to a plasma cutting machine for cutting steel pipes.

Background

The plasma arc cutting machine is a machine for machining a metal material by means of a plasma cutting technique, and is a machining method for forming a slit by partially or partially melting (and evaporating) a metal at a slit of a workpiece by heat of a high-temperature plasma arc and removing the molten metal by means of momentum of high-speed plasma.

The plasma cutting machine can cut various metals which are difficult to cut by oxygen cutting by matching with different working gases, and has better cutting effect on nonferrous metals in particular, and the main advantages are that when the metal with small thickness is cut, the plasma cutting speed is high, the cutting surface is smooth, the thermal deformation is small, and the heat affected zone is almost not generated.

In view of the above-mentioned related art, the inventors have found that, in the course of implementing the technical scheme, at least the following technical problems exist: in the process of cutting pipes such as steel pipes and the like by the plasma cutting machine, one end of the pipe is clamped on the clamp, the other end of the pipe is placed in a vacation mode only by means of the rigidity of the pipe, in the cutting process, the bending deformation of the pipe easily causes cutting line deviation to affect the cutting effect, the pipe part which is not clamped by the clamp easily rolls and falls off, the end of the pipe is impacted with the ground, the phenomenon of collision deformation occurs, and the falling pipe also easily causes injury of personnel.

Disclosure of Invention

Aiming at the defects existing in the prior art, the application provides a plasma cutting machine for cutting steel pipes, which comprises an operation platform, wherein a plasma cutter is arranged on the outer side of the operation platform, a plasma gun is arranged on the plasma cutter, a clamp for clamping pipes is arranged on the operation platform, a bearing mechanism is arranged on the operation platform and close to the plasma gun,

The supporting mechanism comprises a first sliding plate, a second sliding plate is arranged on the operating platform and is close to the first sliding plate, a scissor type lifting frame is arranged between the first sliding plate and the second sliding plate, an electric threaded rod is arranged in the scissor type lifting frame, a main supporting table is arranged at the upper end of the scissor type lifting frame, an auxiliary supporting component is arranged on the operating platform and is close to the main supporting table, and a clamping component for clamping pipes is arranged at the upper end of the main supporting table;

The inside of operation platform and the position that is close to supporting mechanism are equipped with collection mechanism, collection mechanism is including placing in the inboard and upper end open-ended collection box of operation platform, the inside position that is close to supporting mechanism of collection box is equipped with the subassembly of preventing splashing.

Further, the clamping assembly comprises a bottom side clamping plate positioned at the upper end of the main bearing table, a top side clamping plate is arranged at the upper end of the bottom side clamping plate, a rotating rod is arranged at the joint of the top side clamping plate and the bottom side clamping plate, the top side clamping plate and the bottom side clamping plate are rotationally connected through the rotating rod, and clamping components are arranged on the inner sides of the bottom side clamping plate and the top side clamping plate.

Further, hold and press from both sides the part including a plurality of fixed mounting fixed blocks on top side splint and bottom side splint inside wall, be equipped with first clamp pole of holding on the fixed block, the one end of holding the clamp pole is equipped with the second and holds the clamp pole, first clamp pole and second hold the clamp pole and pass through the torsional spring to be connected, lie in two that homonymy and level are parallel the second is held and is equipped with between the clamp pole and is held the clamp roller, hold the clamp roller and follow the circumference evenly distributed of tubular product.

Further, be equipped with translation part between clamping assembly and the main bearing platform, translation part is including fixed mounting in main bearing platform upper end and be close to central point put first gear, one of them bottom side splint's lower extreme and be close to the position of first gear are equipped with first rack, another bottom side splint's lower extreme and be close to the position of first gear are equipped with the second rack, first rack and second rack are with first gear central symmetry, first rack and first gear engagement are connected, the second rack is connected with first gear engagement.

Further, the auxiliary bearing assembly comprises a third sliding plate which is in sliding connection with the operating platform, a fixed triangular plate is arranged at the upper end of the third sliding plate and close to the edge, an auxiliary connecting frame which is in rotary connection with the scissor type lifting frame is arranged on the fixed triangular plate, an auxiliary bearing table is arranged at the upper end of the auxiliary connecting frame, a second telescopic sleeve is arranged between the auxiliary bearing table and the third sliding plate, and an anti-rolling component is arranged at the upper end of the auxiliary bearing table.

Further, the roll-off prevention component comprises a first supporting rod fixedly installed on the auxiliary supporting table, a protection plate is arranged at one end of the first supporting rod, a second supporting rod is arranged at the outer side of the protection plate and close to the position of the first supporting rod, and a roller is arranged at one side, far away from the first supporting rod, of the protection plate.

Further, prevent splashing the subassembly including fixed mounting in the inside fixed splint of bearing mechanism, one of them fixed splint fixed mounting is in the lower extreme of main bearing platform and be close to the position of edge, another fixed splint fixed mounting is in the lower extreme of vice bearing platform and be close to the position of edge, the inside of fixed splint is equipped with the butt joint board, two be equipped with the beam barrel between the butt joint board, the lower extreme of beam barrel is pegged graft in the collecting box.

Further, the butt plate and the position that is close to the fixed splint are equipped with the lug that has elastic deformation ability, the inside of fixed splint and the position that is close to the lug are equipped with the recess that uses with the lug match, the lug joint is in the recess.

Further, third racks symmetrically distributed about the butt joint plate are arranged on two sides of one butt joint plate, fourth racks symmetrically distributed about the butt joint plate are arranged on two sides of the other butt joint plate, and a second gear is connected between the third racks and the fourth racks in a meshed mode.

Further, the detachable sieve plate is arranged in the collecting box and close to the position of the beam collecting cylinder, and the detachable drawing box is arranged in the collecting box and close to the bottom.

Compared with the prior art, the technical scheme provided by the application has the following beneficial effects:

1. According to the application, the support mechanism is arranged, one end of the pipe far away from the clamp is supported by the main support table, meanwhile, the clamping component of the clamping component is used for clamping and fixing the pipe, and the pipe is limited and fixed on the premise of not influencing the rotation and cutting of the pipe, so that the possibility of rolling the pipe in the cutting process is effectively reduced, the possibility of cutting line deviation in the plasma cutting process is reduced, the stability of the plasma cutting machine in cutting the pipe such as a steel pipe is improved, and the possibility of direct falling of a part of the pipe which is not clamped by the clamp after the pipe is cut is reduced;

2. According to the application, the collecting mechanism is arranged, the waste materials or finished products of the pipe cut by the plasma cutting machine are contained through the collecting cylinder and the collecting box, the waste materials and the finished products are classified by utilizing the sieve plate in the collecting box, the clarity of material classification of the plasma cutting machine after the pipe is cut is improved, an operator is convenient to rapidly process the cut materials, and meanwhile, the environment of a workshop is improved;

3. According to the application, the second gear is arranged, and the second gear is meshed with the third rack and the fourth rack, so that the opening size of the beam-receiving cylinder can be controlled through the distance between the main bearing table and the auxiliary bearing table, the bearing mechanism is matched with the pipe, the collecting mechanism is synchronously matched with the pipe in size, and the working efficiency of the collecting mechanism is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of the mounting position of the support mechanism according to the embodiment of the present application;

FIG. 3 is a schematic view of a supporting mechanism according to an embodiment of the present application;

FIG. 4 is a schematic view of a clamping assembly according to an embodiment of the present application;

FIG. 5 is a schematic view of a clamping member according to an embodiment of the present application;

FIG. 6 is a schematic view of a translating element according to an embodiment of the present application;

FIG. 7 is a schematic view of the construction of a secondary support assembly according to an embodiment of the present application;

FIG. 8 is a schematic view of the structure of the anti-roll-off feature according to an embodiment of the application;

FIG. 9 is a schematic view of a collection mechanism according to an embodiment of the present application;

FIG. 10 is a schematic view of a beam converging barrel according to an embodiment of the present application;

Fig. 11 is an enlarged view at a in fig. 10.

In the figure: 1. an operating platform; 10. a pipe; 2. a plasma cutter; 3.a plasma gun; 4. a clamp; 5. a bearing mechanism; 51. a first slide plate; 511. a slide block; 52. a second slide plate; 53. an electric threaded rod; 54. a scissor fork type lifting frame; 55. a main support table; 56. a first telescopic sleeve; 57. an auxiliary connecting frame; 6. a clamping assembly; 61. a bottom end side clamping plate; 62. a rotating lever; 63. a top side clamping plate; 64. a clamping component; 641. a fixed block; 642. the first clamping rod; 643. a second clamping rod; 644. holding and clamping the rotating roller; 65. a translation member; 651. a first gear; 652. a first rack; 653. a second rack; 7. a secondary support assembly; 71. a third slide plate; 72. fixing a triangle; 73. an auxiliary support table; 74. a second telescopic sleeve; 75. an anti-roll-off member; 751. a first support bar; 752. a second support bar; 753. a protection plate; 754. a roller; 8. a collection mechanism; 81. a collection box; 82. drawing a box; 83. a sieve plate; 84. a fixed clamping plate; 841. a groove; 85. an abutting plate; 851. a bump; 86. a beam-converging cylinder; 87. a second gear; 88. a third rack; 89. and a fourth rack.

Detailed Description

In order to better understand the above technical solutions, the following detailed description will refer to fig. 1 to 11 and specific embodiments of the present disclosure.

Referring to fig. 1 and 2, the application discloses a plasma cutting machine for cutting steel pipes, which comprises an operation platform 1, a plasma cutter 2, a cutting gun head, a clamp 4 for clamping a pipe 10, a bearing mechanism 5 and a collecting mechanism 8. The plasma cutter 2 is placed at the side of the operation platform 1. The cutting gun head is fixedly arranged on a mechanical arm of the plasma cutter 2. The cutting gun head is positioned above the operating platform 1. The clamp 4 is mounted on the operating platform 1, and the clamp 4 slides on the operating platform 1 by means of a self-contained drive assembly. The pipe 10 is fixed on the operating platform 1 by a clamp 4. The supporting mechanism 5 is installed at the upper end of the operation platform 1 and is close to the position of the cutting gun head and used for supporting the pipe 10 to be cut. The collecting mechanism 8 is installed at the inner side of the operation platform 1 and is close to the bearing mechanism 5, and is used for collecting scraps, scraps and small sections of the pipe 10 generated in the cutting process of the pipe 10.

The pipe 10 to be cut is clamped through the clamp 4, the pipe 10 is moved to the position of the plasma gun 3 through the driving assembly, the plasma gun 3 corresponds to the point to be cut of the pipe 10, in the cutting process, the pipe 10 is supported by the supporting mechanism 5, the bending deformation degree of the pipe 10 is reduced, and meanwhile the cut part of the pipe 10 is reduced to directly fall on the ground. The metal scraps and scraps generated in the cutting process fall into the collecting mechanism 8, so that the subsequent workshop sanitation cleaning is facilitated.

Referring to fig. 2, 3 and 7, the racking mechanism 5 includes a first slide 51, a slide 511, a second slide 52, a motorized threaded rod 53, a scissor lift 54, a primary racking platform 55, a first telescoping sleeve 56, a secondary link 57, a clamp assembly 6 and a secondary racking assembly 7. The slider 511 is fixedly installed at the lower end of the first slider 511. The sliding block 511 positioned at the lower end of the first sliding plate 51 is in sliding connection with the sliding rail at the upper end of the operation platform 1. The second slide plate 52 is fixedly connected with the operation platform 1. The first slide plate 51 and the second slide plate 52 are parallel to each other. The electric threaded rod 53 is fixedly installed on the upper end face of the first sliding plate 51 and is close to the center, a motor of the electric threaded rod 53 is fixedly installed on the first sliding plate 51, the threaded rod of the electric threaded rod 53 faces to the position of the second sliding plate 52, and a connecting seat matched with the electric threaded rod 53 for use is fixedly installed at the upper end of the second sliding plate 52 and is connected with the threaded rod in a threaded rotation mode. The first sliding plate 51 and the second sliding plate 52 are linked through the electric threaded rod 53, and when the electric threaded rod 53 drives the threaded rod to rotate, the distance between the first sliding plate 51 and the second sliding plate 52 changes along with the rotation of the threaded rod. Since the second slide plate 52 is fixedly connected with the operation platform 1, the first slide plate 51 translates on the operation platform 1 when the electric threaded rod 53 rotates. The scissor lift 54 is fixedly mounted between the first slide 51 and the second slide 52. One leg of the scissor lift 54 is rotatably connected to the first slide 51 and the other leg of the scissor lift 54 is rotatably connected to the second slide 52. When the spacing between the first slider 51 and the second slider 52 is reduced, the spacing between the upper and lower ends of the scissor lift 54 is increased. The main bearing platform 55 is mounted on the upper end of the scissor lift 54, and the support leg near the first sliding plate 51 is slidingly connected with the main bearing platform 55, and the support leg near the second sliding plate 52 is rotatably connected with the main bearing platform 55. The main support 55 is parallel to the operation platform 1. The first telescopic sleeve 56 is fixedly mounted between the main support table 55 and the first slide plate 51. A first telescopic sleeve 56 is also fixedly mounted between the main support table 55 and the second slide plate 52. The clamping assembly 6 is mounted on a main support table 55 for clamping a portion of the tubular 10 adjacent the plasma gun 3. The secondary attachment frame 57 is mounted on the outside of the second slide plate 52, the secondary support assembly 7 is mounted on one end of the secondary attachment frame 57, and the secondary support assembly 7 is also mounted on the operating platform 1. The sub-bearing assembly 7 comprises a third slide 71, a fixed triangle 72, a sub-bearing table 73, a second telescopic sleeve 74 and an anti-roll-off member 75. The lower end of the third slide plate 71 is also provided with a slider 511 slidably connected to the operation platform 1. The fixed triangle 72 is fixedly installed at the upper end face of the third slide plate 71 near the edge. The fixed triangle 72 is rotatably connected to the leg of the secondary connection frame 57. The secondary link 57 includes two intersecting and rotatably connected links. The second telescopic sleeve 74 is fixedly mounted on the upper end of the third slide plate 71, and the sub-mount 73 is fixedly mounted on the upper end of the second telescopic sleeve 74. One end of one connecting rod is rotatably connected with the main bearing table 55, and the other end is rotatably connected with a fixed triangle 72 at the upper end of the third sliding plate 71. One end of the other connecting rod is rotatably connected with the second sliding plate 52, and the other end is rotatably connected with the auxiliary supporting table 73. When the main support table 55 is raised, the sub support table 73 is simultaneously raised by the sub link 57. Conversely, when the main support table 55 is lowered, the sub-support table 73 is lowered simultaneously. The rolling-off preventing member 75 is installed at a position near the center of the upper end surface of the sub-holding stage 73, and serves to hold a portion of the tube 10 near the plasma gun 3.

According to the outside diameter of the pipe 10 and the height of the lowest point of the pipe 10 clamped by the clamp 4, the height of the main support table 55 of the support mechanism 5 is adjusted, the motor of the electric threaded rod 53 is started, the threaded rod of the electric threaded rod 53 is rotated, when the electric threaded rod 53 is rotated, the connecting seat at the upper end of the second sliding plate 52 is in threaded connection with the electric threaded rod 53, when the main support table 55 is required to be lifted, the first sliding plate 51 is made to approach the position of the second sliding plate 52 through the rotation of the electric threaded rod 53, the distance between the upper end and the lower end of the scissor fork type lifting frame 54 is increased, and therefore the main support table 55 is lifted. When the main support table 55 is required to be lowered, the first slide plate 51 is moved to a position away from the second slide plate 52 by rotation of the electric threaded rod 53, and the distance between the upper end and the lower end of the scissor lift 54 is reduced, whereby the main support table 55 is lowered. One end of one connecting rod of the auxiliary connecting frame 57 is rotatably connected with the main supporting table 55, and the other end is rotatably connected with the fixed triangle 72 at the upper end of the third sliding plate 71. One end of the other connecting rod is rotatably connected with the second sliding plate 52, and the other end is rotatably connected with the auxiliary supporting table 73. When the main support table 55 is raised, the sub support table 73 is simultaneously raised by the sub link 57. Conversely, when the main support table 55 is lowered, the sub-support table 73 is lowered simultaneously. The height of the pipe 10 is matched, so that the cutting effect of the plasma gun 3 is improved. After the height of the main support table 55 of the support mechanism 5 is adjusted, the main support table 55 is located at one side of the plasma gun 3, the auxiliary support assembly 7 is located at the other side of the plasma gun 3, the cutting point of the pipe 10 is located between the main support table 55 and the auxiliary support assembly 7, the pipe 10 is clamped and fixed by the clamp 4, and the extended part of the pipe 10 is placed in the clamping assembly 6 at the upper end of the main support table 55 to clamp and fix the pipe 10. The fixing of the pipe 10 and the preparation work before cutting the pipe 10 are completed. Finally, the plasma cutter 2 is started, and the pipe 10 is cut by the plasma gun 3.

Referring to fig. 3 to 6, the clamp assembly 6 includes a bottom end side clamp plate 61, a rotation lever 62, a top end side clamp plate 63, a holding clamp member 64, and a displacement member 65. The bottom end side clamping plates 61 are installed at the upper end of the main support table 55, and the two bottom end side clamping plates 61 are symmetrically distributed about the center line of the main support table 55, and the two bottom end side clamping plates 61 constitute a U-shaped frame structure. The rotating lever 62 is mounted at the upper end of the bottom end side clamping plate 61 near the edge. The tip-side clamping plate 63 is mounted on the outer side of the rotation lever 62, and the tip-side clamping plate 63 is rotatably connected to the base-side clamping plate 61 through the rotation lever 62. The translation member 65 is mounted on the upper end of the main support table 55, and the translation member 65 includes a first gear 651, a first rack 652, and a second rack 653. The first gear 651 is rotatably mounted to the upper end of the main support 55 near the center. The first rack 652 is fixedly installed at the lower end of one of the bottom end side clamping plates 61 near the position of the first gear 651. The second rack 653 is fixedly mounted at the lower end of the other bottom end side clamping plate 61 near the position of the first gear 651. The first gear 651 is engaged with the first rack 652, the first gear 651 is engaged with the second rack 653, and the first rack 652 and the second rack 653 are center-symmetrical with respect to the first gear 651. The two bottom end side clamping plates 61 are connected with the first rack 652 and the second rack 653 in a meshing way through the first gear 651 to realize the adjustment of the distance.

Notably, the clasping members 64 are mounted between the bottom side clamp plate and the top side clamp plate. The clamping member 64 includes a plurality of groups of clamping members uniformly distributed along the circumferential direction of the pipe 10, and a single group of clamping members includes a fixing block 641, a first clamping lever 642, a second clamping lever 643, and a clamping roller 644. The clasping roller 644 is rotatably mounted between two second clasping rods 643 that are parallel to each other. The first clamping rod 642 is rotatably mounted at one end of the second clamping rod 643 away from the clamping roller 644. A torsion spring for maintaining the included angle between the first clamping rod 642 and the second clamping rod 643 is mounted at the joint of the first clamping rod 642 and the second clamping rod 643. The fixed block 641 is fixedly arranged at one end of the first clamping rod 642 away from the second clamping rod 643. The fixing block 641 located inside the bottom side clamping plate is fixedly installed on the inner side wall of the bottom side clamping plate. The fixing block 641 located inside the top side clamping plate is fixedly installed on the inner side wall of the top side clamping plate. The pinch member 64 sandwiches the outer side wall of the pipe 10 by a plurality of pinch rollers 644. Rolling friction is provided between the pinch roller 644 and the tube 10.

According to the diameter of the pipe 10, the distance between the two bottom side clamping plates is adjusted, the two bottom side clamping plates are moved to enable the first gear 651 at the upper end of the main bearing table 55 to rotate, and when the single bottom side clamping plate translates, the other bottom side clamping plate translates synchronously and at the same distance in the opposite direction due to the fact that the first gear 651 is meshed with the first rack 652 and the second rack 653. The two groups of clamping pieces in the bottom side clamping plate are symmetrically distributed all the time relative to the pipe 10. After the distance between the bottom end side clamping plates 61 is adjusted, the pipe 10 is placed in the U-shaped frame formed by the bottom end side clamping plates 61, the pipe 10 is in contact with the clamping rotating roller 644, the torsion springs inside the first clamping rod 642 and the second clamping rod 643 are stressed and stretched, the clamping rotating roller 644 is abutted to the outer side wall of the pipe 10 through the torsion springs, and the outer side wall of the pipe 10 is always attached to the outer side wall of the clamping rotating roller 644 in the cutting process. Then, the top end side clamping plate 63 is rotated, and the top end side clamping plate 63 and the bottom end side clamping plate 61 together form a rectangular frame surrounding the pipe 10, so that the clamping rotating rollers 644 of the plurality of groups of clamping pieces are uniformly distributed along the circumferential direction of the pipe 10. In the process of cutting the pipe 10, the pipe 10 is clamped, the rotation state of the pipe 10 in the cutting process is not affected, and the cut pipe 10 is effectively prevented from falling after the pipe 10 is cut.

Referring to fig. 3, 7 and 8, the roll-off prevention part 75 includes a first support bar 751, a second support bar 752, a shielding plate 753, and a drum 754. The first support bar 751 and the second support bar 752 are telescopic sleeves with built-in springs. The first support bar 751 is rotatably installed at the upper end of the sub-holding table 73 near the center. The second support bar 752 is rotatably installed at the upper end of the sub-bearing table 73 near the first support bar 751, and the second support bar 752, the first support bar 751 and the sub-bearing table 73 form a triangle structure. The shielding plate 753 is rotatably installed at one end of the first supporting bar 751 remote from the sub-holding table 73. A plurality of rollers 754 are rotatably mounted on a side surface of the shielding plate 753 remote from the first support bar 751 for assisting the rotation of the pipe 10.

The tubular product 10 that waits to cut is directly placed between two guard plates 753, because guard plate 753 is connected for rotating with first bracing piece 751, the angle of guard plate 753 can be according to tubular product 10's external diameter size change, make the cylinder 754 on guard plate 753 surface can laminate tubular product 10's lateral wall, guarantee guard plate 753's result of use, simultaneously because first bracing piece 751, second bracing piece 752 are the telescopic sleeve of built-in spring, help cylinder 754 laminate tubular product 10's lateral wall, can reduce tubular product 10 simultaneously and place the impact force that produces in the twinkling of an eye.

Referring to fig. 1, 9, 10 and 11, the collecting mechanism 8 includes a collecting box 81, a drawer 82, a screen plate 83, a fixing clip 84, a groove 841, an abutment plate 85, a boss 851, a take-up drum 86, a second gear 87, a third rack 88 and a fourth rack 89. The collection box 81 is placed inside the operation platform 1 and near the receiving mechanism. The removable drawer 82 is inserted into the interior of the collection box. A detachable screen plate 83 is installed inside the collecting box 81, and the screen plate 83 is located above the suction box 82. A splash prevention assembly including a fixing clip 84, a groove 841 abutment plate 85, a bump 851, a beam-receiving cylinder 86, a second gear 87, a third rack 88 and a fourth rack 89 is installed inside the collecting box 81 at a position near the upper end. One of the fixing clips 84 is fixedly installed at a position near the lower end surface of the main support table 55. The other fixing clip 84 is fixedly installed at a position near the lower end surface and the edge of the main support table 55. The abutment plate 85 is fixedly mounted on the outside of the take-up drum 86 and is located close to the fixing clamp plate 84. The butt plate 85 is inserted into the fixing clamp plate 84. A groove 841 is provided on the inner side wall of the fixing clip 84 at a position close to the abutment plate 85. The bump 851 is fixedly mounted on the outer sidewall of the butt plate 85 and is close to the groove 841, and the bump 851 with elastic deformation is in snap connection with the groove 841. The third racks 88 are fixedly installed at the outer side of one of the abutment plates 85, and the two third racks 88 are symmetrically distributed with respect to the abutment plate 85. The fourth racks 89 are fixedly installed at the outer side of the other abutting plate 85, and the two fourth racks 89 are symmetrically distributed with respect to the abutting plate 85. The second gear 87 is in meshed connection between a third rack 88 and a fourth rack 89. The third rack 88 and the fourth rack 89 are centrosymmetric with respect to the second gear 87. The lower end of the beam converging barrel 86 is inserted into the collecting box 81.

The abutting plate 85 is inserted into the inner side of the fixing clamp plate 84, the abutting plate 85 is fixed by the engagement connection between the convex block 851 and the groove 841, and the beam receiving cylinder 86 is fixedly installed between the main support table 55 and the auxiliary support table 73. The size of the upper opening of the converging tube 86 is positively correlated with the distance between the main support table 55 and the sub support table 73, and the larger the distance between the main support table 55 and the sub support table 73 is, the larger the opening of the converging tube 86 is. The larger the distance between the main support table 55 and the auxiliary support table 73 is, the lower the heights of the main support table 55 and the auxiliary support table 73 are, the larger the diameter of the pipe 10 is, the larger the diameter of the opening of the required beam receiving cylinder 86 is, and the size of the opening of the beam receiving cylinder 86 is automatically adjusted according to the distance change between the main support table 55 and the auxiliary support table 73, so that the collection work is more convenient. During the cutting process, the cut part of the pipe 10 enters the collecting box 81 through the beam-collecting cylinder 86, fine scraps and waste materials fall into the suction box 82 through the sieve plate 83, and when the fine scraps such as scraps are cleaned, only the suction box 82 is required to be pulled away. The cut glass and larger tube 10 will fall to the upper end of the screen plate 83 for direct handling.

The working principle of the embodiment of the application is as follows: the pipe 10 to be cut is fixed on the operation platform 1 by the clamp 4, the states of the scissor type lifting frame 54 and the auxiliary connecting frame 57 are adjusted by the electric threaded rod 53, and then the heights of the main bearing table 55 and the auxiliary bearing table 73 are adjusted according to the height of the pipe 10, so that the bending degree of the pipe 10 is reduced as much as possible. When the pipe 10 is overlong and the cut pipe 10 is partially longer, the pipe 10 is further clamped through the holding and clamping rotating roller 644, the first gear 651 is meshed with the first rack 652 and the second rack 653, the distance between the bottom end side clamping plates 61 on two sides is adjusted, the top end side clamping plates 63 are turned to a state that the holding and clamping rotating roller 644 is in contact with the pipe 10, one end of the pipe 10 is clamped by the clamp 4, the other end of the pipe 10 is clamped by the clamping assembly 6, and after the pipe 10 is cut by the plasma gun 3, the cut two parts of the pipe 10 cannot directly fall.

The opening size of the beam-collecting cylinder 86 is adjusted along with the distance between the main bearing table 55 and the auxiliary bearing table 73, so that the pipe 10 with different sizes can be quickly matched, the cut part of the pipe 10 can smoothly enter the beam-collecting cylinder 86 and is collected by the collecting box 81, smaller waste generated by cutting passes through the sieve plate 83 and falls into the drawing box 82, the centralized processing is convenient, the workshop environment is protected, and the larger pipe 10 part falls at the upper end of the sieve plate 83 after being cut and stripped, so that the pipe is convenient to directly take.

Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The plasma cutting machine for cutting the steel pipe comprises an operation platform (1), wherein a plasma cutter (2) is arranged on the outer side of the operation platform (1), a plasma gun (3) is arranged on the plasma cutter (2), a clamp (4) for clamping a pipe (10) is arranged on the operation platform (1), and the plasma cutting machine is characterized in that a bearing mechanism (5) is arranged on the operation platform (1) and close to the position of the plasma gun (3),

The bearing mechanism (5) comprises a first sliding plate (51), a second sliding plate (52) is arranged on the operating platform (1) and is close to the first sliding plate (51), a scissor type lifting frame (54) is arranged between the first sliding plate (51) and the second sliding plate (52), an electric threaded rod (53) is arranged in the scissor type lifting frame (54), a main bearing table (55) is arranged at the upper end of the scissor type lifting frame (54), an auxiliary bearing component (7) is arranged on the operating platform (1) and is close to the main bearing table (55), and a clamping component (6) used for clamping a pipe (10) is arranged at the upper end of the main bearing table (55);

The clamping assembly (6) comprises a bottom end side clamping plate (61) positioned at the upper end of the main bearing table (55), a top end side clamping plate (63) is arranged at the upper end of the bottom end side clamping plate (61), a rotating rod (62) is arranged at the joint of the top end side clamping plate (63) and the bottom end side clamping plate (61), the top end side clamping plate (63) is rotationally connected with the bottom end side clamping plate (61) through the rotating rod (62), and clamping components (64) are arranged on the inner sides of the bottom end side clamping plate (61) and the top end side clamping plate (63);

The clamping component (64) comprises a plurality of fixed blocks (641) fixedly arranged on the inner side walls of the top end side clamping plate (63) and the bottom end side clamping plate (61), a first clamping rod (642) is arranged on the fixed blocks (641), a second clamping rod (643) is arranged at one end of the first clamping rod (642), the first clamping rod (642) is connected with the second clamping rod (643) through a torsion spring, clamping rotating rollers (644) are arranged between the two second clamping rods (643) which are positioned on the same side and are horizontally parallel, and the clamping rotating rollers (644) are uniformly distributed along the circumferential direction of the pipe (10);

The auxiliary bearing assembly (7) comprises a third sliding plate (71) which is in sliding connection with the operation platform (1), a fixed triangular plate (72) is arranged at the upper end of the third sliding plate (71) and close to the edge, an auxiliary connecting frame (57) which is in rotary connection with the scissor type lifting frame (54) is arranged on the fixed triangular plate (72), an auxiliary bearing table (73) is arranged at the upper end of the auxiliary connecting frame (57), a second telescopic sleeve (74) is arranged between the auxiliary bearing table (73) and the third sliding plate (71), and an anti-rolling component (75) is arranged at the upper end of the auxiliary bearing table (73);

The collecting mechanism (8) is arranged in the operating platform (1) and close to the bearing mechanism (5), the collecting mechanism (8) comprises a collecting box (81) which is placed in the inner side of the operating platform (1) and is provided with an upper end opening, a detachable drawing box (82) is arranged in the collecting box (81) and close to the bottom, and an anti-splashing component is arranged in the collecting box (81) and close to the bearing mechanism (5);

The splash-proof assembly comprises fixed clamping plates (84) fixedly mounted inside the bearing mechanism (5), one of the fixed clamping plates (84) is fixedly mounted at the lower end of the main bearing table (55) and is close to the edge, the other fixed clamping plate (84) is fixedly mounted at the lower end of the auxiliary bearing table (73) and is close to the edge, an abutting plate (85) is arranged inside the fixed clamping plates (84), a beam-collecting barrel (86) is arranged between the abutting plates (85), the lower end of the beam-collecting barrel (86) is inserted into the collecting box (81), and a detachable sieve plate (83) is arranged inside the collecting box (81) and is close to the beam-collecting barrel (86).

2. A plasma cutting machine for cutting steel pipes according to claim 1, characterized in that a translation member (65) is provided between the clamping assembly (6) and the main support table (55), the translation member (65) comprises a first gear (651) fixedly mounted at the upper end of the main support table (55) and close to the central position, a first rack (652) is provided at the lower end of one bottom end side clamping plate (61) and close to the first gear (651), a second rack (653) is provided at the lower end of the other bottom end side clamping plate (61) and close to the first gear (651), the first rack (652) and the second rack (653) are centrally symmetrical with respect to the first gear (651), the first rack (652) is in meshed connection with the first gear (651), and the second rack (653) is in meshed connection with the first gear (651).

3. A plasma cutting machine for steel pipe cutting according to claim 1, characterized in that the roll-off prevention member (75) comprises a first support bar (751) fixedly mounted on the sub-support table (73), one end of the first support bar (751) is provided with a shield plate (753), a second support bar (752) is provided at a position outside the shield plate (753) and close to the first support bar (751), and a roller (754) is provided at a side of the shield plate (753) remote from the first support bar (751).

4. A plasma cutting machine for cutting steel pipes according to claim 1, characterized in that the abutment plate (85) is provided with a projection (851) with elastic deformation capability near the fixing clamp plate (84), the fixing clamp plate (84) is provided with a groove (841) matched with the projection (851) in use at the inner part near the projection (851), and the projection (851) is clamped in the groove (841).

5. A plasma cutting machine for cutting steel pipes according to claim 1, characterized in that one of the two sides of the butt plate (85) is provided with third racks (88) symmetrically distributed with respect to the butt plate (85), the other two sides of the butt plate (85) are provided with fourth racks (89) symmetrically distributed with respect to the butt plate (85), and the second racks (87) are engaged and connected between the third racks (88) and the fourth racks (89).