Steel structure positioning and cutting device and method

Abstract

The invention relates to the technical field of steel structure machining, in particular to a steel structure positioning and cutting device which comprises a shell and a power assembly, opposite sides of the shell are communicated to form an opening, an air cylinder is arranged at the top end of the shell and connected with a cutting assembly, and a cleaning unit is arranged in the cutting assembly. A power assembly and a clamping assembly are arranged below the cutting assembly in a spaced mode, and the pipe body shuttles back and forth in the power assembly and the clamping assembly. When the driving unit drives the rotating disc to rotate, the multiple clamping blocks are driven to synchronously move to clamp a pipe body, and a waste section can be stably clamped during cutting; the toothed plate is arranged on the outer side of the rotating disc in a meshed mode, when the clamping blocks clamp the pipe body, the toothed plate is driven to move in the direction close to the cutting assembly, the toothed plate pushes a protection switch of the cutting assembly to conduct cutting, and it is avoided that the cutting assembly is started through misoperation; low-temperature airflow generated by the cold air unit in the cutting assembly is blown to the contact position of the cutting blade and the steel pipe, impurities are prevented from interfering with cutting, and meanwhile the cutting blade and the steel pipe are cooled.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure processing, and particularly relates to a steel structure positioning and cutting device and method. Background Art

[0002] As the core structural form of prefabricated buildings, steel structures have become the mainstream choice in the modern construction field due to their advantages such as light weight, high strength, excellent seismic performance, short construction period, environmental protection and recyclability. They particularly dominate in fields such as industrial plants, super high-rise buildings, large-span stadiums, bridges and new energy facilities. Compared with traditional concrete structures, steel structures can reduce construction waste by about 80%, reduce construction dust and noise pollution, and conform to the national "dual carbon" goal and the development trend of green buildings.

[0003] The Chinese patent document (Publication No.: CN115722730A) discloses a saw blade positioning structure for a steel pipe cutting device. The saw blade positioning structure for the steel pipe cutting device includes a mounting seat, a loosening prevention component and a fastening component. The mounting seat is a circular seat structure; by setting a saw blade positioning structure for the steel pipe cutting device composed of a mounting seat, a loosening prevention component and a fastening component, and setting the loosening prevention component to be composed of a bottom plate, a support spring, a support plate and a limit post, and setting the fastening component to be composed of a fastening seat, a positioning post, a movable seat, a rotating handle, a top post and a return spring, and opening a movable slot and a top post slot on the fastening seat, and opening a mounting hole, a positioning post slot and a limit post slot on the saw blade, so that the limit post passes through the limit post slot and is inserted into the top post slot, thereby forming a self-locking effect, thus avoiding the loosening phenomenon of the fastening component, and thus ensuring the positioning stability of the fastening component for the saw blade.

[0004] In the prior art, there are the following several problems: 1. Before cutting a steel pipe, it is necessary to press on the side and above to fix the required cutting part, but the front end of the steel pipe is not pressed, resulting in tearing of the waste section of the steel pipe during cutting when it is close to breaking, leading to an irregular cutting surface; 2. When the steel pipe is not fully fixed and the cutting device is accidentally started during operation, the steel pipe will roll or even the cutting blade will burst and fly, seriously endangering the working environment and personal safety; 3. During the cutting process, impurities (such as sulfur, phosphorus, etc.) generated will increase the material hardness, resulting in increased friction during cutting, accelerated wear of the cutting blade, and even cracking or flying of the cutting blade; when the temperature of the cutting blade and the steel pipe rises, the cutting efficiency will be reduced, the steel pipe will have a reduced toughness or residual stress concentration phenomenon, increasing the risk of cross-section tearing. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a steel structure positioning and cutting device and method. The device drives the turntable to rotate through a driving unit. The guiding groove of the turntable pulls the guiding rod to move in the radial direction of the diametral plane, so that the clamping block at the end of the guiding rod moves along the radial direction in the sliding groove. Several clamping blocks move synchronously to quickly clamp or loosen the pipe body. During cutting, the waste section can be firmly clamped to avoid tearing and irregular cross-sections of the steel pipe. A toothed plate is meshed and arranged outside the turntable. When the clamping block clamps the pipe body, the toothed plate is driven to move towards the cutting assembly. The toothed plate pushes the travel rod on the side plate of the cutting assembly to rotate. After the protection switch of the cutting assembly is turned on, cutting is carried out to avoid accidentally starting the cutting assembly and ensure the safety of the working environment. A cylindrical cam is arranged on the rotating shaft of the cutting assembly. The cam groove of the cylindrical cam cooperates with the guiding heads on both sides to make the sliding rod perform a reciprocating linear motion in the guiding body, further pushing the compression cylinder to generate compressed air. After the compressed air passes through structures such as branch pipes and air hoods, a low-temperature air flow is generated and blown to the contact area between the cutting blade and the steel pipe, avoiding impurities from interfering with cutting and at the same time cooling the cutting blade and the steel pipe, further ensuring the cutting efficiency and product quality.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A steel structure positioning and cutting device includes a housing and a power assembly for conveying a pipe body. An opening is formed through on a pair of opposite sides of the housing. A cylinder is arranged at the top of the housing. The cylinder is connected to a cutting assembly. A cleaning unit is arranged inside the cutting assembly. A power assembly and a clamping assembly are arranged at intervals below the cutting assembly. The pipe body shuttles through the power assembly and the clamping assembly. The clamping assembly includes a vertical plate fixedly arranged at the bottom of the housing. A support seat is fixedly arranged on the vertical plate. A turntable is arranged inside the support seat. A driving unit is arranged on the outer periphery of the turntable. Several guiding grooves are arranged in an array on the turntable. An end cover is fixedly arranged at one end of the support seat away from the vertical plate. Sliding grooves corresponding to the number of guiding grooves are arranged on the end cover. Clamping blocks are slidably arranged in the sliding grooves. Guide rods are fixedly arranged on the clamping blocks. The guide rods are slidably installed inside the guiding grooves. When the driving unit drives the turntable to rotate, the guiding grooves on the turntable pull the guide rods and the clamping blocks to move radially. Several clamping blocks move synchronously to clamp or loosen the pipe body.

[0007] Preferably, the support seat includes an annular body. A semi-annular body is fixedly arranged on the outer periphery of the annular body. A first annular channel and a second annular channel are arranged inside the semi-annular body. A channel is arranged on the turntable to facilitate the passage of the pipe body. An annular sleeve is fixedly arranged at one end of the turntable close to the vertical plate. The annular sleeve is sleeved on the outer periphery of the annular body.

[0008] Preferably, the driving unit includes a first motor and a worm. A worm gear is arranged on the outer periphery of the turntable. The first motor is fixedly arranged on the outer periphery of the semi-annular body. The output end of the first motor is connected to the worm. The worm meshes with the worm gear to drive the turntable. A toothed plate is slidably arranged on one side of the turntable. The toothed plate meshes with the worm gear. A top rod is fixedly arranged on the top of the toothed plate.

[0009] Preferably, a travel rod is arranged on the side plate of the cutting assembly close to the toothed plate. The travel rod is rotatably mounted on the side plate through a rotating rod. A rotary switch is arranged on the rotating rod. The rotary switch is connected in series in the circuit of the cutting assembly. One side of the travel rod is connected with a spring; scale lines are arranged on the side plate close to the ejector rod.

[0010] Preferably, the power assembly includes a driving wheel, a driven wheel and a hinge seat. A third motor is fixedly arranged on one side of the hinge seat. The transmission shaft of the third motor is rotatably mounted on the hinge seat, and a driving wheel is mounted on the transmission shaft; a scissor lift is fixedly arranged at the bottom of the hinge seat, and the scissor lift is used to adjust the up and down position of the driving wheel; the driven wheel is mounted on both sides of the housing through a driven shaft. Slide rails are arranged at the positions corresponding to the driven shafts on the housing. Sliders are mounted in the slide rails. A tension spring is arranged at the bottom end of the slider. Both ends of the driven shaft are rotatably mounted in the sliders.

[0011] Preferably, the cutting assembly includes a fixed frame, a second motor, a rotating shaft and a cutting blade. The top of the fixed frame is fixedly connected to the output end of the cylinder. The second motor is fixedly mounted on the outside of the fixed frame. The rotating shaft of the second motor is mounted at the bottom of the fixed frame, and a cutting blade is fixedly arranged on the rotating shaft.

[0012] Preferably, the cleaning unit includes a cylindrical cam and a compression cylinder. The outer periphery of the cylindrical cam has a cam groove. The cylindrical cam is fixedly arranged on the rotating shaft. Guide bodies and compression cylinders are fixedly arranged on both sides of the cylindrical cam. A slide rod is slidably arranged in the guide body. A guide head is fixedly arranged on one side of the slide rod close to the cylindrical cam. The guide head is slidably mounted in the cam groove. A piston is fixedly arranged at one end of the slide rod close to the compression cylinder. The piston is mounted inside the compression cylinder. A cold air unit is arranged at the output end of the compression cylinder.

[0013] Preferably, the cold air unit includes a branch pipe, an air hood and a cold air end. The cold air end is located at one end of the branch pipe. An inverted conical opening is arranged on the inner wall of the cold air end. A cone is arranged inside the end of the branch pipe far from the cold air end. The air hood is sleeved on the branch pipe and is arranged close to the cold air end. Both ends of the air hood are fixedly connected to the outer periphery of the branch pipe through inner rings. Several ventilation holes are arranged on the wall of the branch pipe located inside the air hood; a ventilation port is arranged on the air hood, and the ventilation port is communicated with the output end of the compression cylinder. The cold air end extends to the bottom of the cutting blade through a blowing pipe.

[0014] Preferably, the piston is slidably mounted inside the compression cylinder. A first one-way valve is arranged on the piston, and a second one-way valve is arranged at the output end of the piston.

[0015] Preferably, a method for cutting using the device of the present invention includes the following steps: S1. Place one end of the pipe body between the driving wheel and the driven wheel, start the third motor to drive the driving wheel to rotate, and convey the pipe body to shuttle through the clamping assembly; S2. Start the first motor, drive the turntable to rotate by the worm meshing with the worm gear teeth; the guide groove on the turntable guides the guide rod and the clamping block to move radially, and several clamping blocks synchronously clamp the pipe body. S3. While the clamping block clamps the pipe body, the worm gear teeth mesh with and drive the toothed plate to move towards the cutting assembly, and the ejector rod on the toothed plate pushes the travel rod on the side plate of the cutting assembly to rotate, thereby turning on the protection switch of the cutting assembly. S4. Start the second motor to drive the rotating shaft and the cutting blade to rotate, and then start the cylinder to control the cutting assembly to descend to a suitable position to cut the pipe body. S5. During the cutting process, the rotating shaft drives the cylindrical cam to rotate. The cam groove of the cylindrical cam cooperates with the guide head to make the slide rod perform a reciprocating linear motion in the guide body, pushing the piston to reciprocate in the compression cylinder to generate compressed gas; the compressed gas enters the air hood and enters the branch pipe through the vent holes to form a vortex to generate cold air, and the cold air blows to the contact area between the cutting blade and the pipe body to achieve impurity removal and temperature reduction. S6. After the cutting is completed, control the cylinder to raise the cutting assembly, and start the first motor to rotate in the reverse direction again to drive the clamping block to release the pipe body.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. During the use of the device of the present invention, after quickly fixing the waste section of the steel pipe, the protection switch is triggered. This not only avoids the irregular situation of the cross-section being torn during the cutting process, but also ensures that the clamping assembly can completely fix the steel pipe before starting the cutting mode, avoiding the situation of the steel pipe rolling or even the cutting blade bursting and flying during cutting, and ensuring a safe working environment; specifically, when the driving unit drives the turntable to rotate, the guide groove of the turntable guides the guide rod to move in the same radial plane and in the same radial direction, so that the clamping block at the end of the guide rod moves along the radial direction in the chute, realizing the synchronous movement of several clamping blocks to quickly clamp the pipe body, and being able to firmly clamp the waste section during cutting, avoiding the steel pipe from being torn and having an irregular cross-section; during the process of the cutting assembly clamping, the outer side of the turntable meshes with and drives the toothed plate, driving the toothed plate to move towards the cutting assembly, and the toothed plate pushes the travel rod on the side plate of the cutting assembly to rotate. The cutting assembly can only be cut after the protection switch is turned on, avoiding the misoperation of starting the cutting assembly and ensuring the safety of the working environment.

[0017] 2. In the device of the present invention, while the motor of the cutting assembly drives the cutting blade to rotate, it also drives the cylindrical cam to rotate. The cylindrical cam causes the cold air unit to generate low-temperature air and blow it towards the cutting part, which not only reduces the interference of impurities during the cutting process, ensures cutting safety and extends the service life of the cutting blade, but also reduces the temperature of the steel pipe, avoiding the risk of cross-section tearing due to a decrease in toughness or stress concentration caused by excessive temperature. Specifically, the cylindrical cam rotates under the drive of the rotating shaft, driving the sliding rods on both sides to perform reciprocating linear motion. The pistons at the ends of the sliding rods reciprocate inside the compression cylinder to generate compressed air, which is introduced into the cold air unit. The air processed by the cold air unit blows towards the cutting blade, removing impurities at the cutting part and simultaneously cooling the cutting components with the low-temperature air blown out. More specifically, the compressed air enters the swirl part through the air hood. After passing through the ventilation holes, the compressed air enters the branch pipe at a high speed along the tangential direction to form a vortex chamber, and the airflow with a lower temperature is discharged through the cold air outlet at the short end of the branch pipe to the cutting part of the steel pipe.

[0018] 3. In the present invention, scale lines are provided on the side plate of the cutting assembly. The relative position change between the ejector rod on the toothed plate and the scale lines is used to confirm whether the pipe body is on the same horizontal plane, and the levelness is adjusted through the lifting platform. Specifically, when the outer diameter sizes of the pipes to be cut are different successively, the clamping assembly and the driving wheel are not on the same horizontal line, which is not conducive to the vertical cutting of the end face of the pipe body. By using a scissor lift to adjust the height of the driving wheel, the pipe body is placed on a horizontal plane for vertical cutting, which is convenient to operate and ensures product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional schematic diagram of the overall installation structure of the device of the present invention; Figure 2 is a three-dimensional schematic diagram of the internal structure of the device of the present invention; Figure 3 is a three-dimensional schematic diagram of the assembly structure of the clamping assembly of the device of the present invention; Figure 4 is a three-dimensional schematic diagram of the disassembled structure of the clamping assembly of the device of the present invention; Figure 5 is a three-dimensional schematic diagram of the assembly structure of the cleaning unit of the device of the present invention; Figure 6 is a three-dimensional schematic diagram of the structure of the cold air unit of the device of the present invention Figure 1 ; Figure 7 is a three-dimensional schematic diagram of the structure of the cold air unit of the device of the present invention Figure 2 ; In the figure: housing - 11; pipe body - 12; clamping assembly - 13; cutting assembly - 14; toothed plate - 15; ejector rod - 16; stroke rod - 17; scale line - 18; air cylinder - 19; vertical plate - 20; semi - ring body - 21; end cover - 22; first motor - 23; worm - 24; fixed bracket - 25; second motor - 26; rotating shaft - 27; cutting disc - 28; cleaning unit - 29; ring body - 30; first annular channel - 31; second annular channel - 32; turntable - 33; worm gear teeth - 34; ring sleeve - 35; guide groove - 36; guide rod - 37; clamping block - 38; sliding groove - 39; cylindrical cam - 40; guide body - 41; guide head - 42; compression cylinder - 43; branch pipe - 44; air hood - 45; cold air end - 46; sliding rod - 47; air blowing pipe - 48; waste gas pipe - 49; ventilation hole - 50; cone - 51; inverted cone opening - 52; piston - 53; first one - way valve - 54; second one - way valve - 55; driving wheel - 56; driven wheel - 57. Detailed implementation mode

[0020] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] The content not described in detail in this specification belongs to the prior art well - known to those skilled in the art. In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is 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. Therefore, it cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0022] Figures 1 - 7As shown in the figure, a steel structure positioning and cutting device includes a housing 11 and a power assembly for conveying a pipe body 12. An opening is formed through opposite sides of the housing 11. A cylinder 19 is provided at the top of the housing 11, and the cylinder 19 is connected to a cutting assembly 14. A cleaning unit 29 is arranged inside the cutting assembly 14. The power assembly and a clamping assembly 13 are arranged at intervals below the cutting assembly 14, and the pipe body 12 shuttles through the power assembly and the clamping assembly 13. The clamping assembly 13 includes a vertical plate 20 fixed to the bottom of the housing. A support seat is fixed on the vertical plate 20. A turntable 33 is arranged inside the support seat. A driving unit is arranged on the outer periphery of the turntable. A plurality of guide grooves 36 are arranged in an array on the turntable 33. An end cover 22 is fixed to one end of the support seat away from the vertical plate 20. Sliding grooves 39 corresponding to the number of the guide grooves are formed in the end cover 22. Clamping blocks 38 are slidably arranged in the sliding grooves 39. Guide rods 37 are fixed on the clamping blocks 38, and the guide rods 37 are slidably installed inside the guide grooves 36. When the driving unit drives the turntable 33 to rotate, the guide grooves 36 on the turntable 33 guide the guide rods 37 and the clamping blocks 38 to move radially, and the plurality of clamping blocks move synchronously to clamp or loosen the pipe body 12.

[0023] An opening is formed through opposite sides of the housing 11 of the device of the present invention. The housing 11 is a rectangular parallelepiped cylinder structure. The cylinder 19 is fixedly installed at the top of the housing 11. The output end of the cylinder 19 penetrates the top plate of the housing 11 and extends into the interior of the housing. Among them, the cylinder 19 is externally connected to a gas source and connected to the control end of the device. The cylinder is a prior art, and the specific working principle will not be described in detail here.

[0024] The number of the guide grooves 36 and the sliding grooves 39 are correspondingly arranged, and can be 5 groups or 4 groups or 3 groups. In this embodiment, it is set to 4 groups.

[0025] In this device, the end cap 22 is fixedly connected to the semi-ring body 21. The turntable 33, the ring sleeve 35, the clamping block 38, etc. are all located between the end cap and the semi-ring body. When the device drives the turntable 33 to rotate through the driving unit, the guiding groove 36 of the turntable 33 pulls the guiding rod 37 to move in the same radial plane and in the same radial direction, so that the clamping block 38 at the end of the guiding rod 37 moves radially in the sliding groove 39, realizing the synchronous movement of several clamping blocks 38 to quickly clamp or loosen the pipe body 12. During cutting, the waste section can be firmly clamped to avoid tearing and irregular cross-sections of the steel pipe. A toothed plate 15 is meshed and arranged outside the turntable. When the clamping block 38 clamps the pipe body 12, it drives the toothed plate 15 to move towards the cutting assembly. The toothed plate 15 pushes the travel rod 17 on the side plate of the cutting assembly to rotate, and after the protection switch of the cutting assembly is turned on, cutting is carried out to avoid accidentally starting the cutting assembly and ensuring the safety of the working environment. A cylindrical cam 40 is arranged on the rotating shaft 27 of the cutting assembly. The cam groove of the cylindrical cam 40 cooperates with the guiding heads 42 on both sides to make the sliding rod 47 perform a reciprocating linear motion in the guiding body 41, further pushing the compression cylinder 43 to generate compressed air. After the compressed air passes through structures such as the branch pipe 44 and the air hood 45, a low-temperature air flow is generated and blown to the contact area between the cutting blade and the steel pipe, avoiding impurities from interfering with cutting, and at the same time cooling the cutting blade 28 and the steel pipe 27, further ensuring the cutting efficiency and product quality.

[0026] Among them, the guiding groove 36 is an arc-shaped groove. Both ends of the guiding groove 36 are located in the same radial plane, and the two ends of the same guiding groove 36 are not on the same radius, but the sliding groove 39 is located in the same radial plane and on the same radius. When the turntable 33 rotates, the guiding groove 36 drives the guiding rod 37 and the clamping block 38 to displace in the same radial plane and on the same radius, realizing the clamping and loosening of multiple clamping blocks 38.

[0027] Furthermore, the support seat includes a ring body 30. A semi-ring body 21 is fixedly arranged on the outer periphery of the ring body 30. A first ring channel 31 and a second ring channel 32 are opened inside the semi-ring body 21. A channel is opened on the turntable 33 to facilitate the passage of the pipe body. A ring sleeve 35 is fixedly arranged at one end of the turntable 33 close to the vertical plate, and the ring sleeve 35 is sleeved on the outer periphery of the ring body 30.

[0028] See Figure 4, in this device, the end cover 22 is fixedly connected to the semi-ring body 21, and the turntable 33, the ring sleeve 35, the clamping blocks 38, etc. are all located between the end cover and the semi-ring body; the inner wall of the ring sleeve 35 is sleeved on the ring body 30, the outer wall of the ring sleeve 35 is located in the first annular channel 31, and the outer wall of the turntable 33 and the worm gear teeth 34 are located in the second annular channel 32; holes for the pipe body 12 to pass through are provided on the vertical plate 20, the turntable 33, the ring body 30, and the end cover 22. When the turntable 33 is driven to rotate by the driving unit, the guide groove 36 of the turntable 33 pulls the guide rod 37 to move in the same radial plane and the same radial direction, so that the clamping block 38 at the end of the guide rod 37 moves radially in the sliding groove 39, realizing the synchronous movement of several clamping blocks 38 to quickly clamp or loosen the pipe body 12, and being able to firmly clamp the waste section during cutting, avoiding tearing and irregular cross-sections of the steel pipe.

[0029] Furthermore, the driving unit includes a first motor 23 and a worm 24. The outer periphery of the turntable 33 is provided with worm gear teeth 34. The first motor 23 is fixedly arranged on the outer periphery of the semi-ring body 21, the output end of the first motor 23 is connected to the worm 24, and the worm 24 meshes with the worm gear teeth 34 to drive the turntable 33; a toothed plate 15 is slidably arranged on one side of the turntable 33, the toothed plate 15 meshes with the worm gear teeth 34, and a top rod 16 is fixedly arranged at the top of the toothed plate 15. Further, a travel rod 17 is arranged on the side plate of the cutting assembly 14 close to the toothed plate 15. The travel rod 17 is rotatably installed on the side plate through a rotating rod, a rotary switch is arranged on the rotating rod, and a spring is connected to one side of the travel rod 17; a scale line 18 is arranged on the side plate close to the top rod 16.

[0030] See Figure 1 , Figure 2 and Figure 3 , half of the turntable 33 and the worm gear teeth 34 are located outside, and the worm gear teeth 34 located outside mesh with the toothed plate 15. When the turntable 33 rotates to drive the clamping blocks 38 to clamp the pipe body 12 ( Figure 4 the turntable 33 rotates counterclockwise in ), it drives the toothed plate 15 to move towards the cutting assembly, the top rod 16 at the top of the toothed plate 15 moves upward, and the top rod 16 pushes the travel rod 17 on the side plate of the cutting assembly to rotate. After the protection switch of the cutting assembly is turned on, cutting is carried out, avoiding misoperation to start the cutting assembly and ensuring the safety of the working environment.

[0031] Among them, the knob switch is used to control the start and stop of the cutting assembly. When the pipe body 12 is clamped, it causes the top rod 16 on the toothed plate 15 to move upward, pushing the knob switch to start the cutting assembly, playing a protective role for the device; when the clamping blocks are in a relaxed state, the top rod 16 on the toothed plate 15 is located at a position far from the travel rod 17, and under the action of the spring, the knob switch is in the initial position, making the cutting assembly in an open circuit state, avoiding misoperation to start; the knob switch is connected in series in the circuit of the cutting assembly to protect the cutting start.

[0032] It should be noted that the knob switch can select the Zhile brand LA38-11X / 21 type or similar series products. The knob switch can be commercially purchased and is an existing technology, so the working principle will not be described in detail here.

[0033] Furthermore, the power assembly includes a driving wheel 56, a driven wheel 57 and a hinge seat (not shown in the figure). A third motor (not shown in the figure) is fixedly installed on one side of the hinge seat. The transmission shaft of the third motor is rotatably installed on the hinge seat, and the driving wheel 56 is installed on the transmission shaft. Starting the third motor drives the driving wheel 56 to rotate, and conveys the pipe body 12 forward until the appropriate size; a scissor lift (not shown in the figure) is fixedly installed at the bottom of the hinge seat, and the scissor lift is used to adjust the up and down position of the driving wheel 56; the driven wheel 57 is installed on both sides of the housing 11 through a driven shaft. Slide rails are provided at the positions corresponding to the driven shafts on the housing 11, sliders are installed in the slide rails, a tension spring is arranged at the bottom end of the slider, and both ends of the driven shaft are rotatably installed in the sliders.

[0034] See Figure 2 , a tension spring is arranged at the bottom end of the slider, and the acting force of the tension spring makes the driven wheel 57 form an approaching acting force with the driving wheel 56 to clamp the pipe body 12, which is beneficial to subsequent stable cutting; when the outer diameter size of the pipe body 12 changes and the clamping assembly 13 is used for clamping, the clamping assembly 13 and the driving wheel 56 are not on the same horizontal line, which is not conducive to the vertical cutting of the end face of the pipe body 12; from the relative position between the ejector rod 16 and the scale line 18, it can be determined that the front and rear positions of the pipe body 12 are not on the same horizontal plane. By using the scissor lift to adjust the height of the driving wheel 56, the pipe body 12 is placed on a horizontal plane, which is beneficial to vertical cutting and ensures product quality.

[0035] The scissor lift can select the (PDV) Paidiwei brand PT-SD1703M lift or series products. The scissor lift can be commercially purchased and is an existing technology, so the working principle will not be described in detail here.

[0036] Further, the cutting assembly 14 includes a fixed frame 25, a second motor 26, a rotating shaft 27 and a cutting blade 28. The top of the fixed frame 25 is fixedly connected to the output end of the cylinder 19. The second motor 26 is fixedly installed on the outside of the fixed frame 25. The rotating shaft 27 of the second motor 26 is installed at the bottom of the fixed frame 25, and the cutting blade 28 is fixedly arranged on the rotating shaft 27.

[0037] See Figure 2 , the second motor 26 is used to control the rotation of the rotating shaft 27 and drive the cutting blade 28 to rotate; the cylinder 19 expands and contracts to adjust the up and down movement of the cutting assembly, and controls the cutting blade 28 to approach the pipe body 12 for cutting.

[0038] It should be noted that a support structure is provided at a position below the cutting disc 28 and offset from the clamping assembly. The support structure supports the pipe body 12, which is beneficial for smooth cutting. The support structure in this application is not shown in the figure.

[0039] Furthermore, the cleaning unit 29 includes a cylindrical cam 40 and a compression cylinder 43. The outer periphery of the cylindrical cam 40 has a cam groove. The cylindrical cam is fixed on the rotating shaft 27. Guide bodies 41 and compression cylinders 43 are fixedly provided on both sides of the cylindrical cam 40. A slide bar 47 is slidably arranged in the guide body 41. A guide head 42 is fixedly provided on one side of the slide bar 47 close to the cylindrical cam 40. The guide head 42 is slidably installed in the cam groove. A piston 53 is fixedly provided at one end of the slide bar 47 close to the compression cylinder 43. The piston 53 is installed inside the compression cylinder 43. The output end of the compression cylinder 43 is provided with a cold air unit.

[0040] See Figure 5 , the guide head 42 on the slide bar 47 is slidably arranged in the cam groove. When the second motor 26 is started to drive the rotating shaft 27 to rotate, the cylindrical cam 40 is driven to rotate. The cam groove drives the guide head 42 and the slide bar 47 to perform reciprocating linear motion together. The piston and two one-way valves inside the compression cylinder cooperate with each other to suck in external air, compress it and then introduce it into the cold air unit. The air processed by the cold air unit is blown towards the cutting disc to remove impurities at the cutting part, and at the same time, low-temperature air is blown to cool the cutting components, ensuring the product quality and the service life of the tool.

[0041] Further, the cold air unit includes a branch pipe 44, an air hood 45, and a cold air end 46. The cold air end 46 is located at one end of the branch pipe 44. The inner wall of the cold air end 46 is provided with an inverted cone opening 52. A cone 51 is arranged inside the end of the branch pipe 44 far from the cold air end 46. The air hood 45 is sleeved on the branch pipe 44 and is arranged adjacent to the cold air end 46. Both ends of the air hood 45 are fixedly connected to the outer periphery of the branch pipe 44 through inner rings. Several ventilation holes 50 are opened on the branch pipe wall located inside the air hood 45; an air vent is opened on the air hood 45, and the air vent communicates with the output end of the compression cylinder 43. The cold air end 46 extends to the bottom of the cutting disc 28 through a blow pipe 48.

[0042] See Figure 5 and Figure 6, by injecting compressed air into the air inlet of the air hood 45, the compressed air enters the swirling part. The swirling part is composed of a plurality of ventilation holes 50 provided on the branch pipe 44. These ventilation holes 50 are opened on the pipe wall of the branch pipe 44 at an inclined angle, and the range of the inclined angle is 30 - 50 degrees; when the compressed air expands through the nozzle with a specific inclined angle, it will enter the vortex chamber formed inside the branch pipe 44 at a high speed along the tangential direction. Inside the vortex chamber, the air flow undergoes vortex transformation during the high-speed rotation process, and thus is separated into two air flows with unequal total temperatures. One air flow is located at the center position of the vortex chamber and has a lower temperature; the other air flow is in the outer region and has a higher temperature; the part of the air flow with a higher temperature will be discharged from the longer end of the branch pipe 44, while the air flow with a lower temperature is discharged through the cold air outlet 46 at the short end of the branch pipe 44. In this way, the original compressed air is effectively shunted into two different air flows, hot and cold.

[0043] It should be noted that the long end of the branch pipe 44 is connected to the waste gas pipe 49 to discharge the generated air with a higher temperature to the outside of the device.

[0044] Furthermore, the piston 53 is slidably installed inside the compression cylinder 43. A first one-way valve 54 is provided on the piston 53, and a second one-way valve 55 is provided at the output end of the piston 53.

[0045] See Figure 7 , the first one-way valve 54 only allows the air outside the compression cylinder 43 to enter the inside of the compression cylinder, and the second one-way valve 55 only allows the air inside the compression cylinder 43 to be discharged to the outside. The cooperation of the two one-way valves sucks in the outside air, compresses it, and then guides it into the cold air unit.

[0046] A method of cutting using the device of the present invention includes the following steps: S1. Place one end of the pipe body 12 between the driving wheel 56 and the driven wheel 57, start the third motor to drive the driving wheel 56 to rotate, and the conveying pipe body 12 shuttles through the clamping assembly; S2. Start the first motor 23, drive the turntable 33 to rotate by the worm 24 meshing with the worm gear teeth 34; the guide groove 36 on the turntable 33 guides the guide rod 37 and the clamping block 38 to move radially, and several clamping blocks 38 synchronously clamp the pipe body 12; S3. When the clamping block 38 clamps the pipe body 12, the worm gear teeth 34 mesh with the rack 15 and move towards the cutting assembly 14. The ejector rod 16 on the rack 15 pushes the travel rod 17 on the side plate of the cutting assembly 14 to rotate, thereby turning on the protection switch of the cutting assembly 14; S4. Start the second motor 26 to drive the rotating shaft 27 and the cutting blade 28 to rotate, and then start the cylinder 19 to control the cutting assembly 14 to descend to an appropriate position to cut the pipe body 12; S5. During the cutting process, the rotating shaft 27 drives the cylindrical cam 40 to rotate. The cam groove of the cylindrical cam 40 cooperates with the guide head 42 to cause the slide bar 47 to perform a reciprocating linear motion in the guide body 41, pushing the piston 53 to reciprocate in the compression cylinder 43 to generate compressed gas; the compressed gas enters the air hood 45 and forms a vortex through the vent hole 50 into the branch pipe 44, and the generated cold air is blown through the blow pipe 48 to the contact area between the cutting disc 28 and the pipe body 12; the cold air flow cools and cleans the cutting area, removes the impurities generated during the cutting process, and at the same time cools the cutting part of the steel pipe to prevent the steel pipe from being torn and having an irregular cross-section; S6. After the cutting is completed, control the cylinder 19 to raise the cutting assembly 14, and start the first motor 23 to rotate in the reverse direction again, driving the clamping block 38 to release the pipe body 12, and take out the cut pipe body 12.

[0047] The present invention uses the above embodiments to illustrate the technical concept of the present invention, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that the relevant improvements to the present invention fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A steel structure positioning and cutting device, comprising a housing (11) and a power assembly for conveying a pipe body (12). An opening is formed through opposite sides of the housing (11). It is characterized in that, A cylinder (19) is provided at the top of the housing (11). The cylinder (19) is connected to a cutting assembly (14). A cleaning unit (29) is provided inside the cutting assembly (14). A power assembly and a clamping assembly (13) are spaced below the cutting assembly (14). The pipe body (12) shuttles through the power assembly and the clamping assembly (13). The clamping assembly (13) includes a vertical plate (20) fixed to the bottom of the housing. A support seat is fixed on the vertical plate (20). A turntable (33) is provided inside the support seat. A driving unit is provided on the outer periphery of the turntable. A plurality of guide grooves (36) are arrayed on the turntable (33). One end of the support seat away from the vertical plate (20) is fixed with an end cover (22). Sliding grooves (39) corresponding to the number of the guide grooves are provided on the end cover (22). Clamping blocks (38) are slidably provided in the sliding grooves (39). Guide rods (37) are fixed on the clamping blocks (38). The guide rods (37) are slidably installed inside the guide grooves (36). When the driving unit drives the turntable (33) to rotate, the guide grooves (36) on the turntable (33) guide the guide rods (37) and the clamping blocks (38) to move radially. The plurality of clamping blocks move synchronously to clamp or loosen the pipe body (12).

2. The steel structure positioning and cutting device according to claim 1, characterized in that The support seat includes an annular body (30). A semi-annular body (21) is fixed on the outer periphery of the annular body (30). A first annular channel (31) and a second annular channel (32) are provided inside the semi-annular body (21). A channel is provided on the turntable (33) for the pipe body to pass through. An annular sleeve (35) is fixed at one end of the turntable (33) close to the vertical plate. The annular sleeve (35) is sleeved on the outer periphery of the annular body (30).

3. The steel structure positioning and cutting device according to claim 2, characterized in that, The driving unit includes a first motor (23) and a worm (24). A worm gear tooth (34) is provided on the outer periphery of the turntable (33). The first motor (23) is fixed on the outer periphery of the semi-annular body (21). The output end of the first motor (23) is connected to the worm (24). The worm (24) meshes with the worm gear tooth (34) to drive the turntable (33). A toothed plate (15) is slidably provided on one side of the turntable (33). The toothed plate (15) meshes with the worm gear tooth (34). A jacking rod (16) is fixed on the top of the toothed plate (15).

4. The steel structure positioning and cutting device according to claim 3, characterized in that A travel rod (17) is provided on a side plate of the cutting assembly (14) close to the toothed plate (15). The travel rod (17) is rotatably installed on the side plate through a rotating rod. A rotary switch is provided on the rotating rod. The rotary switch is connected in series to the circuit of the cutting assembly. A spring is connected to one side of the travel rod (17). A scale line (18) is provided on the side plate close to the jacking rod (16).

5. The steel structure positioning and cutting device according to claim 1, characterized in that, The power assembly includes a driving wheel (56), a driven wheel (57) and a hinge seat. A third motor is fixedly arranged on one side of the hinge seat. The transmission shaft of the third motor is rotatably installed on the hinge seat, and the driving wheel (56) is installed on the transmission shaft. A scissor lift is fixedly arranged at the bottom of the hinge seat, and the scissor lift is used to adjust the up and down position of the driving wheel (56). The driven wheels (57) are installed on both sides of the housing (11) through driven shafts. Slide rails are arranged at the positions corresponding to the driven shafts on the housing (11). Sliders are installed in the slide rails. A tension spring is arranged at the bottom end of the slider. The two ends of the driven shaft are rotatably installed in the sliders.

6. The steel structure positioning and cutting device according to claim 1, characterized in that, The cutting assembly (14) includes a fixed frame (25), a second motor (26), a rotating shaft (27) and a cutting blade (28). The top of the fixed frame (25) is fixedly connected to the output end of the cylinder (19). The second motor (26) is fixedly installed on the outside of the fixed frame (25). The rotating shaft (27) of the second motor (26) is installed at the bottom of the fixed frame (25), and the cutting blade (28) is fixedly arranged on the rotating shaft (27).

7. The steel structure positioning and cutting device according to claim 6, characterized in that, The cleaning unit (29) includes a cylindrical cam (40) and a compression cylinder (43). The outer periphery of the cylindrical cam (40) has a cam groove. The cylindrical cam is fixedly arranged on the rotating shaft (27). Guide bodies (41) and compression cylinders (43) are fixedly arranged on both sides of the cylindrical cam (40). A slide rod (47) is slidably arranged in the guide body (41). A guide head (42) is fixedly arranged on one side of the slide rod (47) close to the cylindrical cam (40). The guide head (42) is slidably installed in the cam groove. A piston (53) is fixedly arranged at one end of the slide rod (47) close to the compression cylinder (43). The piston (53) is installed inside the compression cylinder (43). The output end of the compression cylinder (43) is provided with a cold air unit.

8. The steel structure positioning and cutting device according to claim 7, characterized in that, The cold air unit includes a branch pipe (44), an air hood (45), and a cold air end (46). The cold air end (46) is located at one end of the branch pipe (44). An inverted conical opening (52) is arranged on the inner wall of the cold air end (46). A cone (51) is arranged inside the end of the branch pipe (44) far from the cold air end (46). The air hood (45) is sleeved on the branch pipe (44) and is arranged close to the cold air end (46). The two ends of the air hood (45) are fixedly connected to the outer periphery of the branch pipe (44) through inner rings. Several ventilation holes (50) are opened on the branch pipe wall located inside the air hood (45). An air vent is opened on the air hood (45), and the air vent communicates with the output end of the compression cylinder (43). The cold air end (46) extends to the bottom of the cutting blade (28) through a blow pipe (48).

9. The steel structure positioning and cutting device according to claim 8, characterized in that, The piston (53) is slidably installed inside the compression cylinder (43). A first one-way valve (54) is arranged on the piston (53), and a second one-way valve (55) is arranged at the output end of the piston (53).

10. A method of cutting using the steel structure positioning and cutting device according to any one of claims 1-9, characterized in that, It includes the following steps: S1. Place one end of the pipe body (12) between the driving wheel (56) and the driven wheel (57), start the third motor to drive the driving wheel (56) to rotate, and convey the pipe body (12) to shuttle through the clamping assembly; S2. Start the first motor (23), drive the turntable (33) to rotate by engaging the worm gear (24) with the worm wheel teeth (34); the guide groove (36) on the turntable (33) guides the guide rod (37) and the clamping block (38) to move radially, and several clamping blocks (38) clamp the pipe body (12) synchronously; S3. While the clamping block (38) clamps the pipe body (12), the worm wheel teeth (34) engage and drive the toothed plate (15) to move towards the cutting assembly (14), and the ejector rod (16) on the toothed plate (15) pushes the travel rod (17) on the side plate of the cutting assembly (14) to rotate, thereby turning on the protection switch of the cutting assembly (14); S4. Start the second motor (26), drive the rotating shaft (27) and the cutting blade (28) to rotate, and then start the cylinder (19) to control the cutting assembly (14) to descend to a suitable position to cut the pipe body (12); S5. During the cutting process, the rotating shaft (27) drives the cylindrical cam (40) to rotate, and the cam groove of the cylindrical cam (40) cooperates with the guide head (42) to make the slide rod (47) perform a reciprocating linear motion in the guide body (41), pushing the piston (53) to reciprocate in the compression cylinder (43) to generate compressed gas; the compressed gas enters the air hood (45) and enters the branch pipe (44) through the ventilation hole (50) to form a vortex to generate cold air, and the cold air blows towards the contact area between the cutting blade (28) and the pipe body (12) to achieve impurity removal and temperature reduction; S6. After the cutting is completed, control the cylinder (19) to raise the cutting assembly (14), and start the first motor (23) to rotate in the reverse direction again to drive the clamping block (38) to release the pipe body (12).

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