Metal pipe laser cutting device and method

Abstract

The present invention relates to the technical field of laser cutting of metal pipes, and in particular to a device and method for laser cutting of metal pipes, comprising a frame and an L-shaped plate fixed to the inner side of the frame, an electric clamp mounted on the L-shaped plate for clamping and fixing the metal pipe, an electric turntable rotatably connected to the L-shaped plate, and a laser cutting head mounted at an eccentric position of the electric turntable. The present invention starts an annular nozzle to spray water to form a water curtain to protect the inner wall of the metal pipe, then starts a water pump, and the water is discharged into the rear L-shaped pipe through an electric control valve, so that the nozzle rotates and sprays water to form a water curtain to protect the outer wall of the metal pipe, and then the laser cutting head can be started to perform laser cutting on the metal pipe. The water curtain on the inner and outer walls can prevent slag from adhering to the metal pipe to form slag, thereby improving the cutting quality and facilitating the subsequent processing of the metal pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of metal pipe laser cutting, and in particular to a metal pipe laser cutting device and method. Background Art

[0002] During the processing of metal pipes, the cutting of metal pipes is a crucial processing link. In order to make the length of the metal pipes reach the required length, the metal pipes need to be laser cut.

[0003] A Chinese patent with announcement number CN118559237B discloses a metal pipe processing and cutting device, including a machine base, a mobile module, a control console, an installation component A, an installation component B, a rotating motor, a fixing mechanism and a laser cutting mechanism. The laser cutting mechanism and the fixing mechanism are both located on the same side of the installation component B and the distribution quantity of the two is the same. It also includes: a rotation mechanism and a spacing control mechanism. Although the above patent can perform laser cutting on metal pipes, slag will be generated during the laser cutting process. The slag is easy to adhere to the inner wall or outer wall of the metal pipe to form slag. The adhesion of the slag not only seriously affects the flatness and smoothness of the cut surface and reduces the cutting quality, but may also have an adverse effect on the subsequent processing of the pipe.

[0004] The present invention aims to solve the problems existing in the above-mentioned patents. To this end, a metal pipe laser cutting device and method are proposed, which can prevent slag from adhering to form slag, improve cutting quality, and facilitate subsequent processing of metal pipes. Summary of the Invention

[0005] In order to overcome the problem that slag is generated during laser cutting, the slag is easily attached to the inner or outer wall of the metal pipe to form slag. The adhesion of slag not only seriously affects the flatness and smoothness of the cut surface and reduces the cutting quality, but may also have an adverse effect on the subsequent processing of the pipe. The present invention provides a metal pipe laser cutting device and method that can prevent slag from adhering to form slag, improve cutting quality, and facilitate subsequent processing of metal pipes.

[0006] The present invention is achieved through the following technical solutions:

[0007] A metal pipe laser cutting device includes a frame and an L-shaped plate fixed to the inside of the frame, an electric clamp is installed on the L-shaped plate for clamping and fixing the metal pipe, an electric turntable is rotatably connected to the L-shaped plate, a laser cutting head is installed at an eccentric position of the electric turntable, and an annular nozzle is fixed to the inside of the L-shaped plate, the annular nozzle is located directly below the electric turntable, and is used to spray water to form a water curtain to protect the outer wall of the metal pipe, an electric lifting frame is installed on the electric lifting frame, and L-shaped tubes are symmetrically fixed to the inside of the electric round frame, one of the L-shaped tubes is fixed to the inside of the L-shaped plate, and the L-shaped tubes are fixed to the inside of the L-shaped plate. The pipe passes through the electric turntable, and the end of the L-shaped pipe is rotatably connected to the nozzle. The shaft of the nozzle is fixedly sleeved with a water wheel, and the outer side of the L-shaped pipe is fixedly sleeved with a guardrail for protecting the nozzle. A water supply assembly is installed on the inside of the electric round frame. The water supply assembly is used to discharge water into the L-shaped pipe, and the water in the L-shaped pipe is discharged into the nozzle, so that the nozzle sprays water to form an annular water curtain to protect the inner wall of the metal pipe. A water supply assembly is provided between the electric round frame and the L-shaped pipe to discharge water into the L-shaped pipe. A grinding assembly is provided between the L-shaped plate and the frame for grinding the cutting port of the metal pipe.

[0008] To further explain, the electric clamp includes an electric clamping frame symmetrically installed on an L-shaped plate, one of the electric clamping frames is evenly spaced with electric rollers installed for driving the metal pipe to move downward, and one of the electric clamping frames is evenly spaced and connected to a guide roller corresponding to the electric roller.

[0009] Further explanation, the water supply assembly includes an electric control valve installed on the inside of the electric circular frame, which is connected to the end of the L-shaped pipe and is used to discharge water into the L-shaped pipe. A water pump is installed on the inside of the electric circular frame, and the water outlet of the water pump is connected to the water inlet of the electric control valve.

[0010] Further explanation, the grinding assembly includes a sliding frame that is slidably connected to the electric turntable, a tension spring is symmetrically connected between the sliding frame and the electric turntable, an electric spline shaft is vertically installed on the sliding frame, a fixed plate is symmetrically fixed on the electric spline shaft, and a grinding disc is symmetrically slidably mounted on the electric spline shaft through the spline, which is used to grind the cutting port of the metal pipe fitting, a compression spring is connected between the grinding disc and the fixed plate, and a limiting assembly is arranged between the L-shaped plate and the frame to limit the sliding frame.

[0011] Further explanation, the limiting assembly includes L-shaped rods that are evenly spaced and slidably connected to the L-shaped plate, a conical disk is fixed between the ends of the L-shaped rods, the outer side of the conical disk is in contact with the end of the sliding frame, and is used to limit the sliding frame, a connecting spring is connected between the L-shaped rods and the L-shaped plate, and a contact frame that contacts the electric lifting frame is fixed between the L-shaped rods.

[0012] Further explanation, the metal pipe laser cutting device also includes a cleaning component, which includes a hollow tube symmetrically connected to the electric circular frame, the hollow tube is rotatably mounted on the outside of the L-shaped tube, and the outer side surface of the hollow tube is fixed with brushes II at uniform intervals along the circumferential direction, which is used to clean impurities attached to the inner wall of the metal pipe, a fixed frame is fixed to the inside of the frame, an outer gear ring is rotatably connected to the fixed frame, and brushes I are fixed to the inner side of the outer gear ring at uniform intervals along the circumferential direction, which is used to clean impurities attached to the outer wall of the metal pipe, and a driving component is provided between the fixed frame and the electric circular frame for driving the hollow tube and the outer gear ring to rotate.

[0013] Further explanation, the drive assembly includes a rotating rod symmetrically rotatably connected to the electric circular frame, the rotating rod corresponds to the hollow tube, and the rotating rod and the hollow tube are connected by a gear set. A fixed block is symmetrically fixed to the electric circular frame, and an inner hexagonal rod is rotatably connected to the fixed block. The inner hexagonal rod and the rotating rod are connected by a synchronous belt assembly. A guide frame is fixed to the inside of the frame, and an electric rotating shaft is installed between the guide frame and the fixed frame. The bottom end of the electric rotating shaft is hexagonal, and the bottom end of the electric rotating shaft is located in the inner hexagonal rod, which is used to drive the inner hexagonal rod to rotate. A spur gear meshing with the outer ring gear is fixed on the electric rotating shaft.

[0014] Further explanation: the metal pipe laser cutting device also includes a buffer spring symmetrically connected to the top of the electric circular frame. The tail end of the buffer spring is fixed with a buffer block for buffering and protecting the metal pipe that falls after being cut. The hollow tube passes through the buffer block.

[0015] A cutting method for a metal pipe laser cutting device comprises the following steps:

[0016] S1. Place the metal pipe. Move the metal pipe from the top to between the left and right electric clamping frames, and make the cutting position correspond to the laser cutting head. At this time, the metal pipe is put on the rear L-shaped pipe, and then start the left and right electric clamping frames to move inward to clamp the metal pipe.

[0017] S2, laser cutting, first start the annular nozzle to spray water to form a water curtain to protect the outer wall of the metal pipe, then start the water pump to make the nozzle rotate and spray water to form a water curtain to protect the inner wall of the metal pipe, then start the laser cutting head to laser cut the metal pipe. Since the inner and outer walls of the metal pipe cutting position are protected by the water curtain, the slag produced by cutting is difficult to contact the inner and outer walls of the metal pipe to form scraping slag;

[0018] S3. Retrieving materials. After the metal pipe is cut, the lowest electric roller is started to rotate forward to drive the cut metal pipe to fall onto the electric circular frame. The electric lifting frame is then started to move downward to drive the electric circular frame downward. The electric circular frame drives the L-shaped pipe and the metal pipe downward to be under the L-shaped plate. Then the electric circular frame is started to rotate forward 90 degrees, so that the front and rear L-shaped pipes rotate 90 degrees to complete the switching. The rear L-shaped pipe drives the cut metal pipe to rotate to the front side, and the metal pipe can be removed.

[0019] The beneficial effects of the present invention are:

[0020] 1. Clamp the metal pipe with an electric clamping frame, then start the annular nozzle to spray water to form a water curtain to protect the inner wall of the metal pipe. Then start the water pump, and the water is discharged into the rear L-shaped pipe through the electric control valve. The water in the rear L-shaped pipe is discharged into the nozzle. At the same time, the water in the rear L-shaped pipe also drives the water wheel to rotate, and the water wheel drives the nozzle to rotate. The nozzle rotates and sprays water to form a water curtain to protect the outer wall of the metal pipe. Then you can start the laser cutting head to perform laser cutting on the metal pipe. The water curtain on the inner and outer walls can prevent slag from adhering to the metal pipe to form slag, thereby improving the cutting quality and facilitating the subsequent processing of the metal pipe.

[0021] 2. Under the action of the grinding disc, every time the metal pipe is cut, the grinding disc can grind the cut end of the metal pipe to prevent a large number of burrs on the cut end of the metal pipe from affecting subsequent processing, thereby facilitating subsequent processing of the cut metal pipe.

[0022] 3. Under the action of brush I and brush II, whenever the cut metal pipe moves downward, brush I and brush II can remove impurities attached to the inner and outer walls of the cut metal pipe, which can prevent impurities from adhering to the surface of the metal pipe after cutting and affecting subsequent use, thereby improving the cleanliness of the inner and outer walls of the metal pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the electric lifting frame, electric round frame and L-shaped tube of the present invention.

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the electric clamp of the present invention.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the laser cutting head and the annular nozzle of the present invention.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the nozzle and guardrail of the present invention.

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the water wheel of the present invention.

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the grinding assembly of the present invention.

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the L-shaped rod and the connecting spring of the present invention.

[0031] Figure 9 It is a schematic diagram of the three-dimensional structure of the conical disk of the present invention.

[0032] Figure 10 It is a schematic diagram of the three-dimensional structure of the compression spring and the fixing plate of the present invention.

[0033] Figure 11 It is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention.

[0034] Figure 12 It is a schematic diagram of the three-dimensional structure of the spur gear and the rotating rod of the present invention.

[0035] Figure 13 It is a schematic diagram of the three-dimensional structure of the buffer block and buffer spring of the present invention.

[0036] The above drawings include the following reference numerals: 1, frame, 2, L-shaped plate, 3, electric clamping frame, 31, guide roller, 32, electric roller, 4, electric turntable, 41, laser cutting head, 5, electric lifting frame, 6, electric round frame, 7, L-shaped tube, 8, annular nozzle, 9, nozzle, 91, water wheel, 10, guardrail, 11, electric control valve, 111, water pump, 12, sliding frame, 121, grinding disc, 122, conical disc, 123, contact frame, 1 24. L-shaped rod, 125. Connecting spring, 126. Electric spline shaft, 127. Tension spring, 128. Compression spring, 129. Fixed plate, 13. Fixed frame, 131. Outer ring gear, 132. Brush I, 133. Hollow tube, 1331. Brush II, 134. Guide frame, 135. Electric rotating shaft, 136. Fixed block, 137. Inner hexagonal rod, 138. Spur gear, 139. Rotating rod, 14. Buffer block, 15. Buffer spring. DETAILED DESCRIPTION

[0037] Example: A metal pipe laser cutting device, see Figure 1-10As shown, it includes a frame 1 and an L-shaped plate 2 fixed to the upper rear side of the frame 1, an electric clamp is installed on the L-shaped plate 2, and when the electric clamp is in operation, the electric clamp can clamp and fix the metal pipe. An electric turntable 4 is rotatably connected to the middle of the top of the L-shaped plate 2, and a laser cutting head 41 is installed at the eccentric position of the top of the electric turntable 4. It also includes an electric lifting frame 5, an electric circular frame 6, an L-shaped pipe 7, an annular nozzle 8, a nozzle 9, a water wheel 91, a guardrail 10, a water supply component and a grinding component. An annular nozzle 8 is fixed to the middle of the top of the L-shaped plate 2, and the annular nozzle 8 is located directly below the electric turntable 4. The annular nozzle 8 can spray water to form a water curtain to protect the outer wall of the metal pipe to prevent the adhesion of slag. An electric lifting frame 5 is installed on the lower inner side of the frame 1, and an electric circular frame 6 is installed in the middle of the electric lifting frame 5. The inner side of the electric circular frame 6 is symmetrically fixed with L shaped tube 7, the rear L-shaped tube 7 passes through the middle of the electric turntable 4, and the top ends of the front and rear L-shaped tubes 7 are rotatably connected to the nozzles 9, and the lower side of the shaft of the nozzle 9 is fixedly fitted with two water wheels 91, and the upper part of the outer sides of the front and rear L-shaped tubes 7 are fixedly fitted with guardrails 10, which can protect the nozzles 9. A water supply assembly is installed on the inside of the electric circular frame 6, and the water supply assembly is used to discharge water into the L-shaped tube 7, and the water in the L-shaped tube 7 is discharged into the nozzle 9, so that the nozzle 9 sprays water to form an annular water curtain to protect the inner wall of the metal pipe to prevent the adhesion of slag. A water supply assembly is provided between the inside of the electric circular frame 6 and the L-shaped tube 7. When the water supply assembly is operating, the water supply assembly can discharge water into the L-shaped tube 7. A grinding assembly is provided between the L-shaped plate 2 and the frame 1. When the grinding assembly is operating, the grinding assembly can grind the cutting port of the metal pipe.

[0038] The electric clamp includes an electric clamping frame 3, a guide roller 31 and an electric roller 32. The electric clamping frame 3 is symmetrically installed on the left and right sides of the top of the L-shaped plate 2. Four electric rollers 32 are evenly installed on the front side of the left electric clamping frame 3. When the electric roller 32 rotates, the electric roller 32 can drive the metal pipe to move downward. Four guide rollers 31 are evenly spaced and connected to the rear side of the left electric clamping frame 3. The guide rollers 31 correspond to the electric rollers 32.

[0039] See also Figure 5 As shown, the water supply component includes an electric control valve 11 and a water pump 111. The electric control valve 11 is installed in the middle of the inner side of the electric round frame 6. The electric control valve 11 is connected to the inner ends of the L-shaped tubes 7 on the left and right sides. The electric control valve 11 can discharge water into the L-shaped tubes 7. The water pump 111 is installed on the left side of the bottom of the electric round frame 6. The water outlet end of the water pump 111 is connected to the water inlet end of the electric control valve 11.

[0040] See also Figure 7-10As shown, the grinding assembly includes a sliding frame 12, a grinding disc 121, a limit assembly, an electric spline shaft 126, a tension spring 127, a compression spring 128 and a fixed plate 129. The sliding frame 12 is slidably connected to the right side of the electric turntable 4. A tension spring 127 is symmetrically connected between the lower part of the sliding frame 12 and the inner side of the electric turntable 4. An electric spline shaft 126 is vertically installed on the upper part of the sliding frame 12. A fixed plate 129 is symmetrically fixed on the electric spline shaft 126. A grinding disc 121 is symmetrically slidably mounted on the electric spline shaft 126 through a spline. When the grinding disc 121 moves and contacts the cutting port of the metal pipe fitting, the grinding disc 121 can grind the cutting port of the metal pipe fitting. The inner sides of the upper and lower grinding discs 121 are respectively connected to the upper and lower fixed plates 129. A compression spring 128 is connected, and a limit assembly is provided between the L-shaped plate 2 and the frame 1. The limit assembly contacts the bottom end of the sliding frame 12, and the limit assembly can limit the sliding frame 12; the limit assembly includes a conical disk 122, a contact frame 123, an L-shaped rod 124 and a connecting spring 125. Four L-shaped rods 124 are slidingly connected at even intervals on the top of the L-shaped plate 2. A conical disk 122 is fixed between the inner ends of the four L-shaped rods 124. The outer side surface of the conical disk 122 contacts the bottom end of the sliding frame 12. The conical disk 122 can limit the sliding frame 12. A connecting spring 125 is connected between the upper parts of the four L-shaped rods 124 and the outer top of the L-shaped plate 2. A contact frame 123 is fixed between the lower parts of the four L-shaped rods 124, and the lower part of the contact frame 123 contacts the top of the electric lifting frame 5.

[0041] Initially, the connecting spring 125 and the tension spring 127 are both in a stretched state, and the annular nozzle 8 is connected to an external water source. First, an appropriate amount of water is discharged into the frame 1, and the water in the frame 1 contacts the L-shaped plate 2. When an appropriate amount of water is discharged into the frame 1, the water is stopped from being discharged into the frame 1, and then the metal pipe is moved from the top to between the left and right electric clamping frames 3, and the metal pipe is continued to be pushed downward to be sleeved on the rear L-shaped pipe 7. The nozzle 9 is now in the metal pipe. When the cutting position of the metal pipe corresponds to the laser cutting head 41, the metal pipe is stopped from being pushed downward, and the left and right electric clamping frames 3 are started to move inward. The electric clamping frames 3 drive the guide rollers 31 and the electric rollers 32 to move inward. When the guide rollers 31 and the electric rollers 32 move inward and contact the metal pipe, The electric clamping frame 3 clamps the metal pipe through the guide roller 31 and the electric roller 32, closes the electric clamping frame 3, and then starts the annular nozzle 8 to spray water on the outer wall of the metal pipe to form a water curtain. The water curtain is below the cutting position to protect the outer wall of the metal pipe. At the same time, the water pump 111 is started to discharge water into the electric control valve 11, and the water in the electric control valve 11 is discharged into the rear L-shaped pipe 7. The water in the rear L-shaped pipe 7 is discharged into the rear nozzle 9. The nozzle 9 sprays water. The water flow in the L-shaped pipe 7 is also in contact with the water wheel 91. The water drives the water wheel 91 to rotate. The rotation of the water wheel 91 drives the nozzle 9 to rotate. The nozzle 9 rotates and sprays water on the inner wall of the metal pipe to form a water curtain. Then the laser cutting head 41 is started to move to the right to cut the metal pipe. Then the electric turntable 4 is started to rotate. 4 rotates to drive the sliding frame 12 to rotate, and the sliding frame 12 rotates and slides on the conical disk 122. The sliding frame 12 drives the grinding disk 121 to rotate through the electric spline shaft 126. At the same time, the electric turntable 4 also drives the laser cutting head 41 to rotate. The laser cutting head 41 rotates to completely cut the metal pipe. Slag will appear in the cutting process. Since the inner and outer walls of the metal pipe cutting position are protected by water curtains, the slag generated by the cutting is difficult to contact the inner and outer walls of the metal pipe. In this way, the water curtains on the inner and outer walls can prevent the slag from adhering to the metal pipe to form slag, thereby improving the cutting quality and facilitating the subsequent processing of the metal pipe. After the metal pipe is cut, the laser cutting head 41 and the electric turntable 4 are turned off, and the electric turntable 4 stops driving the laser cutting head 4. 1 rotates, the grinding disc 121 also stops rotating, the water pump 111 is turned off, the water stops being discharged into the rear L-shaped tube 7, the water wheel 91 stops driving the nozzle 9 to rotate, and the nozzle 9 stops spraying water. At this time, the electric lifting frame 5 is started to move downward for a distance, the electric lifting frame 5 drives the electric round frame 6 to move downward, the electric round frame 6 drives the L-shaped tube 7 to move downward, the L-shaped tube 7 drives the nozzle 9 to move downward, and at the same time, the electric lifting frame 5 moves downward and stops limiting the contact frame 123. Due to the action of the connecting spring 125, the L-shaped rod 124 moves downward and drives the conical disk 122 to move downward. The conical disk 122 moves downward and stops limiting the sliding frame 12. Due to the action of the tension spring 127, the sliding frame 12 moves to the left, driving the electric spline shaft 126 to move to the left.The electric spline shaft 126 drives the grinding disc 121 to move to the left, and at the same time, the lowest electric roller 32 is started to rotate forward, and the cut metal pipe is driven to move downward for a distance through the guide roller 31. The lowest electric roller 32 is turned off, and the cut metal pipe stops moving downward. Then the grinding disc 121 moves to the left and contacts the cutting end of the metal pipe. The electric lifting frame 5 is turned off, and then the electric spline shaft 126 is started. The electric spline shaft 126 rotates to drive the grinding disc 121 to rotate. The grinding disc 121 rotates to grind the cutting end of the metal pipe. At the same time, the electric turntable 4 is started to drive the sliding frame 12 to rotate. The sliding frame 12 drives the grinding disc 121 to rotate along the circumference of the metal pipe through the electric spline shaft 126. The grinding disc 121 The cutting end of the metal pipe can be fully polished to prevent the cutting end of the metal pipe from having a large number of burrs that affect subsequent processing, thereby facilitating subsequent processing of the cut metal pipe. Due to the action of the compression spring 128, the grinding disc 121 can be in close contact with the cutting end of the metal pipe for grinding. When the grinding of the cutting end of the metal pipe is completed, the electric turntable 4 is turned off, and the grinding disc 121 stops rotating along the circumference of the electric turntable 4. At the same time, the electric spline shaft 126 is turned off, and the grinding disc 121 stops rotating. The bottom electric roller 32 is started to rotate forward to drive the cut metal pipe to move downward and fall onto the electric circular frame 6. The bottom electric roller 32 is turned off, and the electric lifting frame 5 is started again to move downward with The electric circular frame 6 moves downward, and the electric circular frame 6 drives the L-shaped tube 7 and the cut metal pipe to move downward. When the L-shaped tube 7 moves downward to the bottom of the L-shaped plate 2, the electric lifting frame 5 is closed, and the electric circular frame 6 is started to drive the front and rear L-shaped tubes 7 to rotate 90 degrees to complete the switching. The rear L-shaped tube 7 drives the cut metal pipe to rotate to the front side. The electric circular frame 6 is closed, and the electric control valve 11 is started to rotate 180 degrees to connect with the rear L-shaped tube 7. Then the electric lifting frame 5 is started to move upward and reset. The electric lifting frame 5 drives the L-shaped tube 7 to move upward and reset. The electric lifting frame 5 also drives the contact frame 123 to move upward and reset. The contact frame 123 drives the L-shaped rod 124 to move upward and reset. The connecting spring 125 is stretched, and the L The rod 124 drives the conical disc 122 to move upward and reset. The reset of the conical disc 122 drives the slide frame 12 to move rightward and reset. The tension spring 127 is stretched, and the slide frame 12 drives the grinding disc 121 to move rightward and reset through the electric spline shaft 126. The cut metal pipe can be removed from the L-shaped tube 7. During the removal process, the guardrail 10 can protect the nozzle 9 to prevent the nozzle 9 from colliding with the metal pipe and causing damage, thereby ensuring the safety of the nozzle 9. At the same time, the electric roller 32 is started to rotate forward to drive the remaining metal pipe downward, so that the remaining metal pipe is sleeved on the rear L-shaped tube 7 and the cutting position is aligned with the laser cutting head 41. According to the above operation, the metal pipe can continue to be laser cut.

[0042] See also Figure 11 and Figure 12 As shown, the metal pipe laser cutting device also includes a cleaning component installed between the frame 1 and the electric circular frame 6, the cleaning component includes a fixing frame 13, an outer gear ring 131, a brush I 132, a hollow tube 133, a brush II 1331 and a driving component. The top of the electric circular frame 6 is symmetrically rotated with a hollow tube 133, and the hollow tube 133 is rotatably mounted on the outside of the L-shaped tube 7. Three brushes II 1331 are fixedly connected to the upper part of the outer surface of the hollow tube 133 at uniform intervals along the circumferential direction. When the brush II 1331 rotates, the brush II 1 331 can realize the removal of impurities attached to the inner wall of the metal pipe. A fixing frame 13 is fixed to the upper part of the inner rear side of the frame 1. The front side of the fixing frame 13 is rotatably connected to the outer gear ring 131. Six brushes I132 are fixed to the inner side of the outer gear ring 131 at uniform intervals along the circumferential direction. When the brush I132 rotates, the brush I132 can realize the removal of impurities attached to the outer wall of the metal pipe. A driving component is provided between the fixing frame 13 and the electric round frame 6. When the driving component is in operation, the driving component can drive the hollow tube 133 and the outer gear ring. 131 rotates; the driving assembly includes a guide frame 134, an electric shaft 135, a fixed block 136, an inner six diamond rod 137, a spur gear 138 and a rotating rod 139. The electric round frame 6 is symmetrically rotated with the rotating rod 139 in the front and rear directions. The rotating rod 139 corresponds to the hollow tube 133. The upper part of the rotating rod 139 is connected to the lower part of the outer side of the hollow tube 133 through a gear set. The outer side of the electric round frame 6 is symmetrically fixed with the fixed block 136 in the front and rear directions. The inner six diamond rod 137 is rotatably penetrated on the fixed blocks 136 on both sides of the front and rear sides. The lower part of the inner hexagonal rod 137 and the lower part of the rotating rod 139 are connected by a synchronous belt assembly. A guide frame 134 is fixedly connected to the right side of the inner rear side of the frame 1. An electric rotating shaft 135 is installed between the inner side of the guide frame 134 and the right side of the fixed frame 13. The bottom end of the electric rotating shaft 135 is hexagonal. The bottom end of the electric rotating shaft 135 is located in the inner hexagonal rod 137. The electric rotating shaft 135 can drive the inner hexagonal rod 137 to rotate. A spur gear 138 is fixedly sleeved on the upper part of the electric rotating shaft 135, and the spur gear 138 is engaged with the outer ring gear 131.

[0043] When the metal pipe is sleeved on the rear L-shaped tube 7, the outer wall of the metal pipe contacts the brush I 132, and the inner wall of the metal pipe contacts the brush II 1331. After the metal pipe is cut, the electric shaft 135 is started, and the electric shaft 135 drives the spur gear 138 to rotate. The rotation of the spur gear 138 drives the outer gear ring 131 to rotate. The rotation of the outer gear ring 131 drives the brush I 132 to rotate. The brush I 132 rotates to remove impurities attached to the outer wall of the metal pipe. At the same time, the electric shaft 135 also drives the inner gear ring 131 to rotate. The hexagonal rod 137 rotates, and the inner hexagonal rod 137 rotates and drives the rotating rod 139 to rotate through the synchronous belt assembly. The rotating rod 139 drives the rear hollow tube 133 to rotate through the gear set. The rotation of the rear hollow tube 133 drives the brush II 1331 to rotate. The brush II 1331 rotates to clean the inner wall of the metal pipe. When the electric roller 32 rotates forward and drives the cut metal pipe to move downward, the cut metal pipe moves downward and is fully cleaned of impurities by the brush I 132 and the brush II 1331. When the cut metal pipe falls onto the electric circular frame 6, the electric rotating shaft 135 is turned off, the electric rotating shaft 135 stops driving the spur gear 138, the spur gear 138 stops driving the outer gear ring 131 to rotate, the brush I 132 stops rotating, the electric rotating shaft 135 also stops driving the inner six diamond rod 137 to rotate, the rear hollow tube 133 stops driving the brush II 1331 to rotate, the electric lifting frame 5 is started to move downward to drive the electric circular frame 6 to move downward, the electric circular frame 6 moves downward to drive the fixing block 136 to move downward, the fixing block 136 drives the inner six diamond rod 137 to move downward, and the inner six diamond rod 137 moves downward to contact the electric rotating shaft 1 35 is disengaged, and then the electric round frame 6 is started to drive the L-shaped tube 7 to rotate ninety degrees to complete the switching. The electric round frame 6 drives the inner six diamond rod 137 to rotate ninety degrees through the fixed block 136, so that the front inner six diamond rod 137 is rotated to the rear side for use. Then the electric lifting frame 5 is started to drive the electric round frame 6 to move upward and reset. The electric round frame 6 drives the inner six diamond rod 137 to move upward and reset through the fixed block 136. The rear inner six diamond rod 137 moves upward and is sleeved on the bottom end of the electric rotating shaft 135. In this way, impurities can be prevented from being attached to the surface of the metal pipe after cutting and affecting subsequent use, thereby improving the cleanliness of the inner and outer walls of the metal pipe.

[0044] See also Figure 13 As shown, the metal pipe laser cutting device also includes a buffer block 14 and a buffer spring 15. The buffer springs 15 are symmetrically connected to the front and rear ends of the top of the electric round frame 6. The tail ends of the buffer springs 15 on both sides of the front and rear are fixed with buffer blocks 14. The hollow tube 133 runs through the middle of the buffer block 14. The buffer block 14 can provide buffering protection for the metal pipe that falls after being cut.

[0045] When the cut metal pipe falls down, it contacts the buffer block 14, which can cushion the falling metal pipe due to the action of the buffer spring 15. This prevents the metal pipe from being damaged by violent contact with the electric round frame 6, thereby ensuring the safety of the falling metal pipe.

[0046] A cutting method for a metal pipe laser cutting device comprises the following steps:

[0047] S1. Place the metal pipe. Move the metal pipe from the top to between the left and right electric clamping frames 3, and make the cutting position correspond to the laser cutting head 41. At this time, the metal pipe is sleeved on the rear L-shaped pipe 7. Then start the left and right electric clamping frames 3 to move inward to clamp the metal pipe.

[0048] S2, laser cutting: first start the annular nozzle 8 to spray water to form a water curtain to protect the outer wall of the metal pipe, then start the water pump 111, so that the nozzle 9 rotates and sprays water to form a water curtain to protect the inner wall of the metal pipe, then start the laser cutting head 41 to laser cut the metal pipe. Since the inner and outer walls of the metal pipe at the cutting position are protected by the water curtain, the slag produced by cutting is unlikely to come into contact with the inner and outer walls of the metal pipe to form scraping slag;

[0049] S3, taking the material. After the metal pipe is cut, the lowest electric roller 32 is started to rotate forward to drive the cut metal pipe to fall onto the electric circular frame 6. The electric lifting frame 5 is then started to move downward to drive the electric circular frame 6 to move downward. The electric circular frame 6 drives the L-shaped tube 7 and the metal pipe to move downward and is under the L-shaped plate 2. Then, the electric circular frame 6 is started to rotate forward 90 degrees, so that the front and rear L-shaped tubes 7 rotate 90 degrees to complete the switching. The rear L-shaped tube 7 drives the cut metal pipe to rotate to the front side, and the metal pipe can be removed.

Claims

1. A metal pipe laser cutting device, comprising a frame (1) and an L-shaped plate (2) fixed to the inner side of the frame (1), an electric clamp mounted on the L-shaped plate (2) for clamping and fixing the metal pipe, an electric turntable (4) rotatably connected to the L-shaped plate (2), a laser cutting head (41) mounted at an eccentric position on the electric turntable (4), and characterized in that: The frame (1) further comprises an annular nozzle (8) fixed to the inner side of the L-shaped plate (2), the annular nozzle (8) being located directly below the electric turntable (4) and being used for spraying water to form a water curtain to protect the outer wall of the metal pipe. An electric lifting frame (5) is installed on the inner side of the frame (1), an electric round frame (6) is installed on the electric lifting frame (5), and an L-shaped tube (7) is symmetrically fixed to the inner side of the electric round frame (6), one of the L-shaped tubes (7) passes through the electric turntable (4), and the end of the L-shaped tube (7) is rotatably connected to a nozzle (9), and the nozzle (9) is The shaft is fixedly provided with a water wheel (91), the outer side of the L-shaped tube (7) is fixedly provided with a guardrail (10) for protecting the nozzle (9), the inner side of the electric circular frame (6) is provided with a water supply assembly for discharging water into the L-shaped tube (7), and the water in the L-shaped tube (7) is discharged into the nozzle (9), so that the nozzle (9) sprays water to form an annular water curtain to protect the inner wall of the metal pipe fitting, and a grinding assembly is provided between the L-shaped plate (2) and the frame (1) for grinding the cutting end of the metal pipe fitting; The grinding assembly includes a sliding frame (12) that is slidably connected to the electric turntable (4), a tension spring (127) is symmetrically connected between the sliding frame (12) and the electric turntable (4), an electric spline shaft (126) is vertically installed on the sliding frame (12), a fixed plate (129) is symmetrically fixed on the electric spline shaft (126), a grinding disc (121) is symmetrically slidably mounted on the electric spline shaft (126) through the spline, and is used for grinding the cutting end of the metal pipe fitting, a compression spring (128) is connected between the grinding disc (121) and the fixed plate (129), and a limiting assembly is provided between the L-shaped plate (2) and the frame (1) for limiting the sliding frame (12); The limiting assembly includes L-shaped rods (124) that are evenly spaced and slidably connected to the L-shaped plate (2), a conical disk (122) is fixed between the ends of the L-shaped rods (124), the outer side of the conical disk (122) contacts the end of the sliding frame (12) and is used to limit the sliding frame (12), a connecting spring (125) is connected between the L-shaped rods (124) and the L-shaped plate (2), and a contact frame (123) that contacts the electric lifting frame (5) is fixed between the L-shaped rods (124).

2. A metal pipe laser cutting device according to claim 1, characterized in that: The electric clamp comprises an electric clamping frame (3) symmetrically mounted on an L-shaped plate (2), wherein electric rollers (32) are evenly spaced and mounted on one of the electric clamping frames (3) for driving the metal pipe to move downward, and guide rollers (31) corresponding to the electric rollers (32) are rotatably connected and evenly spaced on one of the electric clamping frames (3).

3. A metal pipe laser cutting device according to claim 2, characterized in that the water supply component includes an electric control valve (11) installed on the inner side of the electric circular frame (6), the electric control valve (11) is connected to the end of the L-shaped pipe (7) and is used to discharge water into the L-shaped pipe (7), and a water pump (111) is installed on the inner side of the electric circular frame (6), and the water outlet end of the water pump (111) is connected to the water inlet end of the electric control valve (11).

4. A metal pipe laser cutting device according to claim 3, characterized in that: The metal pipe laser cutting device also includes a cleaning component, which includes a hollow tube (133) symmetrically connected to the electric circular frame (6), the hollow tube (133) is rotatably mounted on the outside of the L-shaped tube (7), and brushes II (1331) are fixedly connected to the outer side of the hollow tube (133) at uniform intervals along the circumferential direction for cleaning impurities attached to the inner wall of the metal pipe. A fixed frame (13) is fixedly connected to the inner side of the frame (1), and an outer gear ring (131) is rotatably connected to the fixed frame (13). Brushes I (132) are fixedly connected to the inner side of the outer gear ring (131) at uniform intervals along the circumferential direction for cleaning impurities attached to the outer wall of the metal pipe. A driving component is provided between the fixed frame (13) and the electric circular frame (6) for driving the hollow tube (133) and the outer gear ring (131) to rotate.

5. A metal pipe laser cutting device according to claim 4, characterized in that: The driving assembly includes a rotating rod (139) symmetrically rotatably connected to the electric round frame (6), the rotating rod (139) corresponds to the hollow tube (133), and the rotating rod (139) and the hollow tube (133) are connected by a gear train. A fixed block (136) is symmetrically fixed on the electric round frame (6), and an inner six diamond rod (137) is rotatably connected to the fixed block (136). The inner six diamond rod (137) and the rotating rod (139) are synchronously connected. The belt assembly is connected for transmission. A guide frame (134) is fixedly connected to the inner side of the frame (1). An electric shaft (135) is installed between the guide frame (134) and the fixed frame (13). The bottom end of the electric shaft (135) is a hexagonal shape. The bottom end of the electric shaft (135) is located inside the inner hexagonal rod (137) and is used to drive the inner hexagonal rod (137) to rotate. A spur gear (138) meshing with the outer gear ring (131) is fixedly mounted on the electric shaft (135).

6. A metal pipe laser cutting device according to claim 5, characterized in that: The metal pipe laser cutting device further comprises a buffer spring (15) symmetrically connected to the top of the electric circular frame (6), a buffer block (14) being fixedly connected to the tail end of the buffer spring (15) for buffering and protecting the metal pipe that falls after being cut, and a hollow tube (133) passing through the buffer block (14).

7. A cutting method using the metal pipe laser cutting device according to claim 6, characterized in that: The following steps are involved: S1. Placement of the metal pipe. Move the metal pipe from the top to between the left and right electric clamping frames (3), and make the cutting position correspond to the laser cutting head (41). At this time, the metal pipe is sleeved on the rear L-shaped pipe (7), and then start the left and right electric clamping frames (3) to move inward to clamp the metal pipe. S2, laser cutting, first start the annular nozzle (8) to spray water to form a water curtain to protect the outer wall of the metal pipe, then start the water pump (111), so that the nozzle (9) rotates and sprays water to form a water curtain to protect the inner wall of the metal pipe, then start the laser cutting head (41) to laser cut the metal pipe. Since the inner and outer walls of the metal pipe cutting position are protected by the water curtain, the slag produced by cutting is difficult to contact the inner and outer walls of the metal pipe to form a scraping slag phenomenon; S3, take the material, after the metal pipe is cut, start the lowest electric roller (32) to rotate forward and drive the cut metal pipe to fall onto the electric circular frame (6), then start the electric lifting frame (5) to move downward and drive the electric circular frame (6) to move downward, the electric circular frame (6) drives the L-shaped tube (7) and the metal pipe to move downward and be under the L-shaped plate (2), then start the electric circular frame (6) to rotate forward 90 degrees, so that the front and rear L-shaped tubes (7) rotate 90 degrees to complete the switching, and the rear L-shaped tube (7) drives the cut metal pipe to rotate to the front side, and the metal pipe can be taken off.

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