Steel pipe cutting apparatus

Abstract

The present invention relates to a steel pipe cutting apparatus, comprising a rack, wherein a cutting device, a clamping device, and a moving device are disposed on the rack; the clamping device comprises a first clamping block and a second clamping block; a cavity is formed in each of the first clamping block and the second clamping block; a movable block is disposed in each cavity; springs are disposed between the bottom end of each movable block and the inner bottom end of the corresponding cavity; vent holes are formed in side walls of each cavity; plugs matched with the vent holes are disposed on side walls of each movable block. According to the present invention, after a steel pipe is clamped and fixed by means of the first clamping block and the second clamping block, the vent holes are automatically opened, so as to blow off metal chips when the steel pipe is cut by the cutting device. In the present application, steel pipe clamping and high-pressure gas blowing are in a linked working process, which can be implemented without any additional structure or step and with a working sequence of clamping before high-pressure gas blowing, thereby improving the efficiency and effect of cutting the steel pipe, ensuring the smoothness of a cut surface of the steel pipe, and prolonging the service life of a cutter.

Description

Steel pipe cutting equipment Technical Field

[0001] The present invention relates to the field of machinery, and in particular to a steel pipe cutting device. Background Art

[0002] Because steel pipes are long, cutting them to the desired length is essential, even a crucial step in their production. Currently, during the cutting process, metal chips accumulate, forming a built-up edge (BUE). This not only damages the surface roughness of the processed pipe but also easily causes chipping and sometimes tears in the pipe surface. Therefore, the timely removal of metal chips during pipe cutting is a pressing issue.

[0003] Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides a steel pipe cutting device.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a steel pipe cutting device, comprising a frame, on which a cutting device, a clamping device and a moving device are provided;

[0006] The clamping device is arranged on one side of the cutting device, and the moving device is arranged on the other side of the cutting device; the cutting device is provided with a cutting hole for the steel pipe to pass through;

[0007] The clamping device includes a first clamping block and a second clamping block, the first clamping block and the second clamping block are arranged opposite to each other, and the first clamping block and the second clamping block are both arranged on the screw rod, the first clamping block is arranged on the screw rod through a positive thread, and the second clamping block is arranged on the screw rod through a negative thread, and the first clamping block and the second clamping block are moved closer to each other in a first state or moved away from each other in a second state under the action of positive or negative rotation of the screw rod;

[0008] A cavity is provided on the side of the first clamping block facing the second clamping block and on the side of the second clamping block facing the first clamping block. A movable block is provided in the cavity, and the top of the movable block extends out of the cavity. There is a gap between the bottom end of the movable block and the bottom end of the cavity, and a spring is provided between the bottom end of the movable block and the bottom end of the cavity. A vent is provided on the side wall of the cavity, and the vent is connected to the cutting device through an air outlet pipe, so a plug matching the vent is provided on the side wall of the movable block; an air inlet pipe is also connected to the cavity.

[0009] As a preferred embodiment, a V-shaped structure is provided on the side of the first clamping block facing the second clamping block and on the side of the second clamping block facing the first clamping block; the V-shaped structure includes a first inclined surface and a second inclined surface; the first inclined surface and the second inclined surface are symmetrically arranged along the center of the corresponding first clamping block or the second clamping block; the cavity is arranged on the first inclined surface, and the bottom surface of the cavity and the first inclined surface are parallel.

[0010] As a preferred embodiment, two groups of springs are provided between the bottom end of the movable block and the bottom end of the cavity, and the two groups of springs are respectively provided on both sides of the bottom end of the movable block;

[0011] The vents are relatively arranged on the two side walls of the cavity, and the plugs are correspondingly arranged on both sides of the bottom end of the movable block; the top of the movable block and the opening of the cavity are matched; when the first clamping block and the second clamping block are in the second state and move away from each other, the distance between the plug and the bottom end of the cavity is not less than the distance between the first clamping block and the second clamping block in the first state and the movable block moves toward the cavity.

[0012] As a preferred embodiment, a guide rod is provided in the spring, one end of the guide rod is connected to the bottom end of the cavity, and the other end is the free end of the guide rod. A groove is provided in the movable block, and the free end of the guide rod is matchedly arranged in the groove, and a distance is left between the free end of the guide rod and the bottom end of the groove; and the distance between the free end of the guide rod and the bottom end of the groove is greater than the distance between the bottom end of the movable block and the bottom end of the cavity.

[0013] As a preferred embodiment, a sealing cover is provided on the end of the movable block extending out of the cavity, and the sealing cover is made of elastic material. One end of the sealing cover is a sealing connection end, and the other end is a sealing free end. The sealing connection end is connected to the movable block, and the sealing free end extends out of the cavity. The size of the sealing connection end matches that of the movable block, the sealing free end is larger than the sealing connection end, and an inclined surface is provided between the sealing free end and the sealing connection end.

[0014] As a preferred embodiment, the moving device includes a base, which is arranged on a slide rail, and the slide rail is located on a frame; a first moving block and a second moving block are provided on the base, the first moving block and the second moving block are arranged opposite to each other, and the first moving block is arranged on the moving screw rod through a positive thread, and the second moving block is arranged on the moving screw rod through a reverse thread, and the first moving block and the second moving block are moved closer to each other to clamp the steel pipe or away from each other to loosen the steel pipe under the rotation action of the moving screw rod.

[0015] As a preferred embodiment, the cutting device includes a front cover, a rear cover, and a cutting blade. The top of the front cover and the top of the rear cover are connected to each other to form a mounting cavity. The cutting blade is arranged in the mounting cavity. The front cover is provided with an air inlet connected to the air outlet pipe.

[0016] A discharge port is left between the bottom end of the front cover shell and the bottom end of the rear cover shell, and the discharge port is matched with the recycling box on the frame. A collection port matching the discharge port is provided at the top of the recycling box, and a suction fan is provided on one side of the recycling box.

[0017] As a preferred embodiment, a cooling box is provided on the frame, and coolant is provided in the cooling box; the rear cover shell includes an inner layer and an outer layer, a hollow structure is formed between the inner layer and the outer layer, and the cooling box is connected to the hollow structure through a liquid inlet pipe and a liquid outlet pipe respectively.

[0018] As a preferred embodiment, the frame is provided with a collecting trough and a limiting part, and the collecting trough and the limiting part are arranged in sequence on one side of the clamping device, and the limiting part includes a base, a lifting platform, a limiting rod and a limiting plate, the base is arranged on the frame, the lifting platform is arranged on the base, the limiting rod is arranged on the lifting platform through a cylinder, and the limiting plate is arranged on one end of the limiting rod; the lifting platform is also provided with a slope guide plate, and the slope guide plate is located at the lower part of the limiting plate.

[0019] As a preferred embodiment, the guide plate is tilted from high to low from the top to the bottom, and the distance between the top of the guide plate and the center of the collecting tank is greater than the distance between the bottom of the guide plate and the center of the collecting tank.

[0020] The beneficial effect of the present invention is: after the first clamping block and the second clamping block clamp the steel pipe, the vent hole is automatically opened to blow off metal chips when the cutting device cuts the steel pipe. The clamping of the steel pipe and the blowing of high-pressure gas in this application are an interlocking working process. This process can be achieved without additional structures or steps, and the two have a working order of clamping first and then blowing high-pressure gas, which is beneficial to improving the cutting efficiency and cutting effect of the steel pipe, ensuring the smoothness of the cross-section of the steel pipe, and extending the service life of the cutting knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic structural diagram of the present invention;

[0022] FIG2 is a schematic structural diagram of the clamping device of the present invention;

[0023] FIG3 is a schematic diagram of the connection relationship between the movable block and the cavity of the present invention;

[0024] FIG4 is a schematic diagram of the structure of the movable block of the present invention;

[0025] FIG5 is a schematic diagram of the structure of the clamping device of the present invention clamping a steel pipe;

[0026] FIG6 is a schematic structural diagram of a cutting device according to the present invention;

[0027] Figure: frame 1; recovery box 101; suction fan 102; cooling box 103; cutting device 2; front cover 201; rear cover 202; cutting blade 203; air inlet 204; discharge port 205; clamping device 3; first clamping block 301; second clamping block 302; screw rod 303; cavity 304; movable block 305; spring 306; vent 307; outlet pipe 308; plug 309; air inlet pipe 31 0; first inclined surface 311; second inclined surface 312; guide rod 313; groove 314; sealing cover 315; sealing connection end 3151; sealing free end 3152; moving device 4; base 401; slide rail 402; first moving block 403; second moving block 404; moving screw rod 405; steel pipe 5; limiting part 6; base 601; lifting platform 602; limiting rod 603; limiting plate 604; guide slope plate 605. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] As shown in Figures 1 to 6, a steel pipe cutting device includes a frame 1, on which a cutting device 2, a clamping device 3 and a moving device 4 are provided;

[0031] The clamping device 3 is arranged on one side of the cutting device 2, and the moving device 4 is arranged on the other side of the cutting device 2; the cutting device is provided with a cutting hole for the steel pipe 5 to pass through;

[0032] The clamping device 3 includes a first clamping block 301 and a second clamping block 302, the first clamping block 301 and the second clamping block 302 are arranged opposite to each other, and the first clamping block 301 and the second clamping block 302 are both arranged on the screw rod 303, the first clamping block 301 is arranged on the screw rod 303 by a positive thread, and the second clamping block 302 is arranged on the screw rod 303 by a reverse thread. Under the action of the forward or reverse rotation of the screw rod 303, the first clamping block 301 and the second clamping block 302 are close to each other in a first state or away from each other in a second state; the steel pipe is clamped by the first clamping block 301 and the second clamping block 302 approaching each other, and the cut steel pipe is loosened by the first clamping block and the second clamping block separated from each other, so that the steel pipe can fall into the collection tank.

[0033] When the steel pipe cutting device of the present invention is used, the steel pipe 5 is first moved through the cutting hole of the cutting device by the moving device and continues to move forward until the steel pipe 5 extending out of the cutting device reaches a predetermined length, and then the steel pipe is cut by the cutting device; and because the clamping device is arranged on the other side of the cutting device, that is, when the steel pipe is cut by the cutting device, the steel pipe is fixed by the moving device and the clamping device respectively, which effectively avoids the steel pipe from being offset when the steel pipe is cut by the cutting device, thereby ensuring the stability of the steel pipe when being cut. In the present application, when clamping the steel pipe, the lead screw is first driven to rotate in the forward direction, and the first clamping block and the second clamping block arranged on the lead screw are in the second state, that is, the two clamping blocks move away from each other, so that the moving device can move the steel pipe between the first clamping block and the second clamping block, and then the lead screw is driven to rotate in the reverse direction, and the first clamping block and the second clamping block on the lead screw are in the first state, that is, the first clamping block and the second clamping block move towards each other, until the two clamping blocks respectively clamp the outer wall of the steel pipe, which is beneficial to improve the stability of the cutting device when cutting the steel pipe;

[0034] When the cutting device cuts the steel pipe, a lot of metal chips will be generated on the cutting surface. These metal chips not only damage the roughness of the surface of the processed steel pipe, but also easily cause the chipping phenomenon. Sometimes the surface of the steel pipe to be processed will be torn. In this application, a cavity 304 is provided on the side of the first clamping block 301 facing the second clamping block 302 and on the side of the second clamping block 302 facing the first clamping block 301. A movable block 305 is provided in the cavity 304. The top end of the movable block 305 extends out of the cavity 304, and the bottom end of the movable block 305 and the cavity There is a distance between the bottom ends of 304, and a spring 306 is provided between the bottom end of the movable block 305 and the bottom end of the cavity 304. A vent hole 307 is provided on the side wall of the cavity 304. The vent hole 307 is connected to the cutting device through an outlet pipe 308, so a plug 309 matching the vent hole 307 is provided on the side wall of the movable block 305; an air inlet pipe 310 is also connected to the cavity 304; for ease of use, the air inlet pipe and the air outlet pipe in this application are both left with a margin, so as to facilitate the movement of the first clamping block and the second clamping block towards or away from each other.

[0035] When the first clamping block 301 and the second clamping block 302 do not clamp the steel pipe, the top of the movable block 305 extends out of the cavity. At this time, the plug 309 on the movable block 305 blocks the vent 307. When the first clamping block 301 and the second clamping block 302 are close to each other to clamp the steel pipe, the movable block 305 moves into the cavity under the squeezing action of the steel pipe, and in the process of the movable block moving toward the bottom of the cavity, it drives the plug at the bottom of the movable block to move downward, exposing the vent. At this time, high-pressure gas is injected into the cavity through the air inlet pipe 310, and the gas enters the cutting device through the vent. During the process of the cutting device cutting the steel pipe, air is blown into the steel pipe during the cutting process, which is convenient for blowing off metal chips generated during the steel pipe cutting process, reducing the retention of metal chips on the cutting surface, ensuring the smoothness of the steel pipe cutting surface, and effectively avoiding damage to the cutting knife by metal chips. While the high-pressure gas blows off the metal chips on the cutting surface, it also facilitates cooling the cutting knife, thereby extending the service life of the cutting knife.

[0036] The present invention automatically opens the vent hole after the steel pipe is clamped and fixed by the first clamping block and the second clamping block, so that metal chips are blown off when the cutting device cuts the steel pipe. The clamping of the steel pipe and the blowing of high-pressure gas in this application are an interlocking working process. This process can be achieved without additional structures or steps, and the two have a working order of clamping first and then blowing high-pressure gas, which is beneficial to improving the cutting efficiency and cutting effect of the steel pipe, ensuring the smoothness of the cross-section of the steel pipe, and extending the service life of the cutting knife.

[0037] In the present application, a V-shaped structure is provided on the side of the first clamping block 301 facing the second clamping block and on the side of the second clamping block 302 facing the first clamping block; the V-shaped structure includes a first inclined surface 311 and a second inclined surface 312; the first inclined surface 311 and the second inclined surface 312 are symmetrically arranged along the center of the corresponding first clamping block 301 or the second clamping block 302; by arranging the V-shaped structure on the first clamping block and the second clamping block, and the V-shaped structures are arranged facing each other, it is conducive to clamping steel pipes of different diameters, and improving the adaptability of the first clamping block and the second clamping block to clamp steel pipes of different diameters; the cavity 304 is arranged on the first inclined surface 311, and the bottom surface of the cavity 304 and the first inclined surface 311 are arranged in parallel; when the movable block is squeezed by the steel pipe and moves downward along the cavity, it is convenient for the bottom end of the movable block to match and fit with the bottom end of the cavity, thereby improving the stability of the movable block moving along the cavity.

[0038] As a preferred embodiment, two sets of springs 305 are provided between the bottom end of the movable block 305 and the bottom end of the cavity 304 in the present application, and the two sets of springs 306 are respectively provided on both sides of the bottom end of the movable block 305;

[0039] The vent holes 307 are relatively arranged on the two side walls of the cavity 304, and the plugs 309 are respectively and correspondingly arranged on both sides of the bottom end of the movable block 305; the top end of the movable block 305 and the opening of the cavity 304 are matched;

[0040] When the first clamping block 301 and the second clamping block 302 are in the second state and move away from each other, the distance between the plug 309 and the bottom end of the cavity is not less than the distance when the first clamping block and the second clamping block are in the first state and move away from each other and the movable block 305 moves toward the cavity, providing sufficient space for the movable block to move along the cavity, ensuring that the vent is fully exposed, and improving the efficiency of the gas in the cavity entering the cutting device.

[0041] Since the diameters of steel pipes are different, if the diameter of the steel pipe is large, when the first clamping block and the second clamping block clamp the steel pipe, the steel pipe squeezes one end A of the movable block near the top of the first clamping block and the second clamping block, and the end A of the movable block moves downward to squeeze the spring, driving the plug near the end A of the movable block to move the squeezing spring toward the bottom of the cavity, exposing the air vent near the end A of the movable block, and injecting high-pressure gas into the cavity through the air inlet pipe. The high-pressure gas is discharged into the cutting device through the air vent near the end A of the movable block to blow off the metal chips on the cutting surface of the steel pipe, thereby reducing the retention of metal chips on the cutting surface of the steel pipe and ensuring the quality of the metal cutting surface of the steel pipe. Similarly, when the diameter of the steel pipe is small, when the first clamping block and the second clamping block clamp and fix the steel pipe, the steel pipe is close to the B end of the movable block. At this time, the steel pipe squeezes the B end of the movable block, and the B end of the movable block moves toward the bottom of the cavity to squeeze the spring, driving the plug close to the B end of the movable block to move downward, exposing the vent hole, and injecting high-pressure gas into the cavity. The gas enters the cutting device through the vent hole, blowing the metal chips on the cutting knife and the cutting surface of the steel pipe in the cutting device, avoiding the metal chips from being retained on the cutting surface of the steel pipe, ensuring the smoothness of the cutting surface of the steel pipe, and avoiding damage to the cutting knife.

[0042] As a preferred embodiment, a guide rod 313 is provided in the spring 306 in the present application, one end of the guide rod 313 is connected to the bottom end of the cavity 304, and the other end is the free end of the guide rod, and a groove 314 is provided in the movable block 305, and the free end of the guide rod is matchedly arranged in the groove 314, and a distance is left between the free end of the guide rod and the bottom end of the groove 314; and the distance between the free end of the guide rod and the bottom end of the groove 314 is greater than the distance between the bottom end of the movable block and the bottom end of the cavity.

[0043] When the movable block 305 is squeezed by the steel pipe and moves into the cavity, the setting of the guide rod 313 is conducive to achieving a limiting effect on the movable block, avoiding displacement of the movable block when moving toward the bottom of the cavity, and ensuring the stability of the movement of the movable block 305; after the cutting of the steel pipe is completed, the first clamping block and the second clamping block move away from each other, and the cut steel pipe falls into the collection tank. At this time, the movable block is reset under the action of the spring.

[0044] As a preferred embodiment, in the present application, a sealing cover 315 is provided on one end of the movable block 304 extending out of the cavity 304. The sealing cover 315 is made of elastic material. One end of the sealing cover 315 is a sealing connection end 3151, and the other end is a sealing free end 3152. The sealing connection end 3151 is connected to the movable block 305, and the sealing free end 3152 extends out of the cavity 304. The size of the sealing connection end 3151 matches that of the movable block 304. The sealing free end 3152 is larger than the sealing connection end 3151, and a slope 316 is provided between the sealing free end 3152 and the sealing connection end 3151. When the first clamping block and the second clamping block clamp the steel pipe and the steel pipe squeezes the movable block, the steel pipe first squeezes the sealing cover on the top of the movable block, and the sealing cover drives the movable block to move into the cavity. Since the sealing free end is larger than the sealing connection end, and an inclined surface is provided between the sealing free end and the sealing connection end, in the process of the sealing cover moving into the cavity, the sealing connection end first moves into the cavity, and then drives the inclined surface and the sealing free end to move into the cavity. The setting of the inclined surface plays a guiding role for the sealing cover, and the sealing cover made of elastic material is conducive to deformation, which seals the opening of the cavity to prevent the high-pressure gas in the cavity from leaking out, and ensures that the gas can smoothly pass through the vent to blow the cutting surface in the cutting device.

[0045] As a preferred embodiment, the moving device 4 in the present application includes a base 401, and the base 401 is arranged on a slide rail 402, and the slide rail 402 is located on the frame 1; the base 402 is provided with a first moving block 403 and a second moving block 404, the first moving block 403 and the second moving block 404 are arranged opposite to each other, and the first moving block 403 is arranged on the moving screw rod 405 through a positive thread, and the second moving cabinet block 404 is arranged on the moving screw rod 405 through a reverse thread, and the first moving block 403 and the second moving cabinet block 404 are moved closer to each other to clamp the steel pipe or away from each other to loosen the steel pipe under the rotation action of the moving screw rod 405; by driving the moving screw rod to rotate, the first moving block 403 and the second moving block 404 are moved closer to each other to clamp the steel pipe, and then the base 401 is driven to move along the moving screw rod 405, thereby driving the steel pipe between the first moving block and the second moving block to move toward one side of the clamping device, thereby realizing the movement of the steel pipe.

[0046] The cutting device 2 in the present application includes a front cover 201, a rear cover 202 and a cutting blade 203. The top of the front cover 201 and the top of the rear cover 202 are connected to each other to form an installation cavity. The cutting blade 203 is arranged in the installation cavity. The front cover 201 is provided with an air inlet 204 connected to the air outlet pipe.

[0047] A discharge port 205 is provided between the bottom end of the front cover 201 and the bottom end of the rear cover 202. The discharge port 205 is matched with the recycling box 101 on the frame 1. A collection port matching the discharge port 205 is provided at the top of the recycling box 101. A suction fan 102 is provided on one side of the recycling box. After the first clamping block 301 and the second clamping block 302 clamp the steel pipe 4, the vents on the first clamping block 301 and the second clamping block 302 are opened, and the high-pressure gas in the cavity enters the installation cavity through the air outlet pipe and the air inlet 204. When the cutting knife 203 in the installation cavity cuts the steel pipe, the metal chips are blown away. At the same time, the suction fan is started, and the suction fan sucks the metal chips in the installation cavity into the recycling box 101. The high-pressure blowing of the high-pressure gas and the negative pressure of the suction fan improve the collection efficiency of the metal chips, and reduce the influence of the metal chips on the cutting surface of the steel pipe caused by the retention of the metal chips in the installation cavity.

[0048] As a preferred embodiment, the frame 1 in the present application is provided with a cooling box 103, and the cooling box 103 is provided with a coolant; the rear cover 202 includes an inner layer and an outer layer, and a hollow structure is formed between the inner layer and the outer layer, and the cooling box is connected to the hollow structure through a liquid inlet pipe and a liquid outlet pipe respectively; that is, the coolant is injected into the hollow structure to cool the rear cover, and then the installation cavity between the rear cover and the front cover is cooled, thereby reducing the ambient temperature of the cutting knife when cutting the steel pipe, and coordinating with the high-pressure gas blown into the installation cavity and under the negative pressure of the suction fan, it is beneficial to increase the convection speed in the installation cavity, increase the cooling speed in the installation cavity, extend the service life of the cutting knife, and improve the stability of the cutting knife during use.

[0049] The frame is provided with a collecting trough 104 and a limiting portion 6, which are sequentially arranged on one side of the clamping device. The limiting portion 6 includes a base 601, a lifting platform 602, a limiting rod 603 and a limiting plate 604. The base 601 is arranged on the frame 1, the lifting platform 602 is arranged on the base 601, the limiting rod 603 is arranged on the lifting platform 602 through a cylinder, and the limiting plate 604 is arranged on one end of the limiting rod 603; the lifting platform 602 is also provided with a guide plate 605, and the guide plate 605 is located at the lower part of the limiting plate 604;

[0050] Before the clamping device clamps the steel pipe, the limiting portion is used to limit one end of the steel pipe extending out of the clamping device, which is conducive to achieving fixed-length cutting of the steel pipe and improving the accuracy of fixed-length cutting of the steel pipe; specifically, the limiting rod is extended by the cylinder, and the limiting plate is driven by the limiting rod to rest on one end of the steel pipe to limit the steel pipe and achieve fixed-length cutting of the steel pipe; the length of the steel pipe can be cut according to needs, and then the cylinder is driven to drive the limiting rod to drive the length of the limiting plate to extend; and the lifting platform 602 can be raised and lowered along the base 601. Specifically, the lifting platform can be raised and lowered along the base 601 by the cylinder to adjust the height of the limiting rod, thereby meeting the needs of steel pipes with low diameters; and while the lifting platform is raised and lowered, the guide ramp 605 on the lifting platform is driven to rise and fall, thereby achieving a buffer when the first clamping block and the second clamping block move away from each other after cutting, and the steel pipe falls from the clamping device to the collection tank, thereby reducing the impact force of the steel pipe falling into the collection tank after cutting, and avoiding damage to the steel pipe after cutting.

[0051] Specifically, the guide plate is tilted from high to low from the top to the bottom, and the distance between the top of the guide plate and the center of the collecting trough is greater than the distance between the bottom of the guide plate and the center of the collecting trough, which is conducive to guiding the steel pipe after cutting and facilitating the steel pipe to fall into the collecting trough.

[0052] Throughout this specification, reference to terms such as "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0053] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A steel pipe cutting device, characterized in that: It comprises a frame, on which a cutting device, a clamping device and a moving device are arranged; The clamping device is arranged on one side of the cutting device, and the moving device is arranged on the other side of the cutting device; the cutting device is provided with a cutting hole for the steel pipe to pass through; The clamping device comprises a first clamping block and a second clamping block, the first clamping block and the second clamping block are arranged opposite to each other, and the first clamping block and the second clamping block are both arranged on the screw rod, the first clamping block is arranged on the screw rod through a positive thread, and the second clamping block is arranged on the screw rod through a negative thread, and the first clamping block and the second clamping block are approached to each other in a first state or moved away from each other in a second state under the action of positive or negative rotation of the screw rod; A cavity is provided on one side of the first clamping block facing the second clamping block and on one side of the second clamping block facing the first clamping block, a movable block is provided in the cavity, the top end of the movable block extends out of the cavity, a gap is left between the bottom end of the movable block and the bottom end of the cavity, and a spring is provided between the bottom end of the movable block and the bottom end of the cavity, an air vent is provided on the side wall of the cavity, the air vent is connected to the cutting device through an air outlet pipe, so a plug matching the air vent is provided on the side wall of the movable block; an air inlet pipe is also connected to the cavity.

2. The steel pipe cutting equipment according to claim 1, characterized in that: A V-shaped structure is provided on the side of the first clamping block facing the second clamping block and on the side of the second clamping block facing the first clamping block; the V-shaped structure includes a first inclined surface and a second inclined surface; the first inclined surface and the second inclined surface are symmetrically arranged along the center of the corresponding first clamping block or the second clamping block; the cavity is arranged on the first inclined surface, and the bottom surface of the cavity and the first inclined surface are arranged in parallel.

3. The steel pipe cutting equipment according to claim 1, characterized in that: Two groups of springs are arranged between the bottom end of the movable block and the bottom end of the cavity, and the two groups of springs are arranged on both sides of the bottom end of the movable block respectively; The vent holes are relatively arranged on the two side walls of the cavity, and the plugs are respectively and correspondingly arranged on both sides of the bottom end of the movable block; the top end of the movable block and the opening of the cavity are matched; When the first clamping block and the second clamping block are in the second state and move away from each other, the distance between the plug and the bottom end of the cavity is not less than the distance when the first clamping block and the second clamping block are in the first state and move away from each other and the movable block moves toward the cavity.

4. The steel pipe cutting equipment according to claim 3, characterized in that: A guide rod is provided in the spring, one end of the guide rod is connected to the bottom end of the cavity, and the other end is the free end of the guide rod. A groove is provided in the movable block, and the free end of the guide rod is matchedly arranged in the groove, with a spacing between the free end of the guide rod and the bottom end of the groove; and the spacing between the free end of the guide rod and the bottom end of the groove is greater than the spacing between the bottom end of the movable block and the bottom end of the cavity.

5. The steel pipe cutting equipment according to claim 1, characterized in that: A sealing cover is provided on one end of the movable block extending out of the cavity, and the sealing cover is made of elastic material. One end of the sealing cover is a sealing connection end, and the other end is a sealing free end. The sealing connection end is connected to the movable block, and the sealing free end extends out of the cavity. The size of the sealing connection end matches that of the movable block, the sealing free end is larger than the sealing connection end, and an inclined surface is provided between the sealing free end and the sealing connection end.

6. The steel pipe cutting equipment according to claim 1, characterized in that: The moving device includes a base, which is arranged on a slide rail, and the slide rail is located on a frame; a first moving block and a second moving block are arranged on the base, the first moving block and the second moving block are arranged opposite to each other, and the first moving block is arranged on the moving screw rod through a positive thread, and the second moving block is arranged on the moving screw rod through a reverse thread, and the first moving block and the second moving block are moved closer to each other to clamp the steel pipe or away from each other to loosen the steel pipe under the rotation of the moving screw rod.

7. The steel pipe cutting equipment according to claim 1, characterized in that: The cutting device comprises a front cover shell, a rear cover shell and a cutting knife, the top end of the front cover shell and the top end of the rear cover shell are connected to each other to form an installation cavity, the cutting knife is arranged in the installation cavity, and the front cover shell is provided with an air inlet connected to the air outlet pipe; A material discharge port is left between the bottom end of the front cover shell and the bottom end of the rear cover shell, and the material discharge port is matched with the recovery box on the frame. A material collection port matching the material discharge port is provided at the top of the recovery box, and a suction fan is provided on one side of the recovery box.

8. The steel pipe cutting equipment according to claim 7, characterized in that: The frame is provided with a cooling box, in which coolant is provided; the rear cover shell comprises an inner layer and an outer layer, a hollow structure is formed between the inner layer and the outer layer, and the cooling box is connected to the hollow structure through a liquid inlet pipe and a liquid outlet pipe respectively.

9. The steel pipe cutting equipment according to claim 1, characterized in that: The frame is provided with a collecting trough and a limiting part, and the collecting trough and the limiting part are arranged in sequence on one side of the clamping device. The limiting part includes a base, a lifting platform, a limiting rod and a limiting plate. The base is arranged on the frame, the lifting platform is arranged on the base, the limiting rod is arranged on the lifting platform through a cylinder, and the limiting plate is arranged on one end of the limiting rod; the lifting platform is also provided with a ramp guide plate, and the ramp guide plate is located at the lower part of the limiting plate.

10. The steel pipe cutting equipment according to claim 9, characterized in that: The guide ramp is inclined from the top to the bottom and from high to low, and the distance between the top of the guide ramp and the center of the collecting tank is greater than the distance between the bottom of the guide ramp and the center of the collecting tank.

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