Metal cutting equipment for cutting steel skeleton PE pipe

Abstract

The invention relates to the technical field of metal cutting, and particularly discloses a metal cutting device for cutting a steel skeleton PE pipe, the metal cutting device comprises a workbench and a cutting knife, one side of the workbench is fixedly connected with a vertical stand column, one side of the stand column is slidably provided with the cutting knife, and the two sides of the workbench are fixedly connected with symmetrical extension tables; two rhombic first sliding grooves are formed in the top of the extension table, rhombic sliding strips are slidably connected into the two first sliding grooves, one ends of the two sliding strips are fixedly connected with the bottom of a triangular frame, a fixing block is fixedly connected to the top end of the triangular frame, a horizontal rod is fixedly connected to the side, close to the cutting knife, of the fixing block, and a second screw rod is slidably connected to one side of the horizontal rod; one side of the second screw is in threaded connection with a first supporting block, and the tail end of the second screw is fixedly connected with a second supporting block. The two ends of the PE pipe and the inner walls of the two sides of the cut-off face are supported and fixed through the first supporting blocks and the second supporting blocks, and the cutting quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal cutting, in particular to a metal cutting equipment for cutting steel skeleton PE pipe. BACKGROUND

[0002] The steel skeleton PE pipe is a pipe produced with steel wire mesh as a skeleton during production, which can effectively constrain the creep of polyethylene material and increase the strength of the polyethylene material, thereby improving the compression resistance and high temperature resistance of the composite pipe.

[0003] The steel skeleton PE pipe is often very long during production, and needs to be cut to meet various use requirements. Generally, a rotary cutting knife is used for cutting operation. However, unlike ordinary polyethylene pipes, the steel wire mesh in the steel skeleton PE pipe is not easy to recover itself when deformed. Since the traditional cutting method is to clamp outside the steel skeleton PE pipe, the inside of the steel skeleton PE pipe does not obtain effective support, so it is easy to deform at the cutting section under the action of the cutting knife during cutting, and it is not easy to reshape after deformation, which affects the quality of the steel skeleton PE pipe. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art and provide a metal cutting equipment for cutting steel skeleton PE pipe.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: A metal cutting equipment for cutting steel skeleton PE pipe, comprising a workbench and a cutting knife, the workbench is fixedly connected with a vertical column on one side, the cutting knife is slidingly installed on one side of the column, the workbench is fixedly connected with two mutually symmetrical extension tables on both sides, two first sliding grooves in the shape of a rhombus are formed on the top of the extension table, a sliding bar in the shape of a rhombus is slidingly connected in the two first sliding grooves, the bottom of a tripod is fixedly connected to one end of the two sliding bars, a fixed block is fixedly connected to the top end of the tripod, a horizontal rod is fixedly connected to the side of the fixed block close to the cutting knife, scale lines are uniformly arranged on the outer wall of the horizontal rod, a second screw rod is slidingly connected to one side of the horizontal rod, a first support block is threadedly connected to one side of the second screw rod, and a second support block is fixedly connected to the end of the second screw rod. A first sliding ring is slidingly connected to the outer wall of the first support block, three first electric cylinders are fixedly installed on one side of the outer wall of the first support block, the telescopic end of the first electric cylinder is fixedly connected to the side wall of the first sliding ring, and three groups of rotatable first double connecting rods are rotatably installed on the other side of the outer wall of the first support block, the bottom side of the first double connecting rod is rotatably connected to the outer ring of the first sliding ring, and the top of the first double connecting rod is rotatably connected with a first support plate in the shape of an arc. The outer wall of the second supporting block is slidably connected with a second sliding ring, three second electric cylinders are fixedly installed on one side of the outer wall of the second supporting block, the telescopic ends of the second electric cylinders are fixedly connected with the side wall of the second sliding ring, three groups of rotatable second double connecting rods are rotatably installed on the other side of the outer wall of the second supporting block, one side of the bottom of each second double connecting rod is rotatably connected with the outer ring of the second sliding ring, and the top of each second double connecting rod is rotatably connected with an arc-shaped second supporting plate, and the length of the second supporting plate is smaller than that of the first supporting plate.

[0006] Preferably, the top of the stand is fixedly connected with a horizontal plate, two electric telescopic rods are fixedly installed on the top of the horizontal plate, and the telescopic ends of the two electric telescopic rods pass through the horizontal plate and are fixedly connected with the top of the cutting knife.

[0007] Preferably, the bottom of the stand is fixedly connected with a supporting frame, the end of the supporting frame is fixedly connected with an arc-shaped frame, vertical through grooves are formed in the supporting frame and the arc-shaped frame, and the through grooves are in the same vertical plane as the cutting knife.

[0008] Preferably, the bottom of the stand is fixedly connected with a supporting frame, the end of the supporting frame is fixedly connected with an arc-shaped frame, vertical through grooves are formed in the supporting frame and the arc-shaped frame, and the through grooves are in the same vertical plane as the cutting knife.

[0009] Preferably, the end of the second screw rod close to the fixed block is fixedly connected with a hand wheel, the side wall of one side of the second screw rod close to the fixed block is fixedly connected with a rotating clamping block of an annular structure, and a rotating clamping groove matched with the rotating clamping block is formed in the side wall of one side of the fixed block close to the rotating clamping block.

[0010] Preferably, the outer ring of one side of the fixed block close to the first supporting block is fixedly connected with three limiting rods, and the sum of the length of each limiting rod and the radius of the first supporting block is greater than the radius of the PE pipe.

[0011] Preferably, the side wall of one side of the second supporting block is provided with a mounting bin, a tension spring is fixedly connected to the inner wall of the mounting bin, a rotating block is movably connected to the mounting bin, an embedded hole is formed in the side wall of one side of the rotating block close to the tension spring, a rotating piece built-in the embedded hole is fixedly connected to the end of the tension spring, and an embedded pull ring is formed in the side wall of one side of the rotating block away from the tension spring.

[0012] Preferably, the outer ring of one side of the rotating block away from the tension spring is provided with three embedded grooves, an arc-shaped rotating block is rotatably connected in each embedded groove, a spherical block is fixedly connected to the end of the arc-shaped rotating block close to the embedded hole, an annular groove matched with the spherical block is formed in the side wall of the second supporting block of the outer ring of the mounting bin, and a threaded hole is further formed in the outer ring of one side of the rotating block away from the tension spring, which is used for threaded connection with an external scraper.

[0013] Preferably, the second support block end side wall is provided with an annular dust collection bin, the annular dust collection bin is provided with a filter screen, and the second support block is fixedly connected with two air pipes through the second sliding ring, the two air pipes are communicated with the annular dust collection bin, the outer ring of the first sliding ring is rotationally connected with a rotating ring, the two air pipes are respectively threaded out from the two sides of the rotating ring, the two air pipes threaded out from the rotating ring are respectively threaded through the two sides of the hand wheel, and the two air pipes are fixedly connected through quick release interfaces at the ends.

[0014] Compared with the prior art, the beneficial effects of the present application are: The first support block is provided, the two first support blocks and the first support plate are used for supporting and fixing the inner walls of the two ends of the PE pipe, the cutting position can be corresponded with the cutting knife before the PE pipe is cut off, the first support plate is opened and closed through the first sliding ring and the first double connecting rod, and different inner diameters of the PE pipe can be supported and fixed.

[0015] The second support block is provided, the two second support blocks are used for supporting and fixing the inner walls on the two sides of the cutting surface, the two sides of the cutting surface are effectively supported and fixed, the occurrence of the cutting surface deformation can be effectively reduced, the position of the second support block is calculated according to the position of the predetermined cutting surface and the moving distance of the tripod, and the position can be directly observed by observing the scale line on the horizontal rod, so that the inner support position of the cutting surface of the opaque steel skeleton PE pipe can be observed without observing the inside of the PE pipe, and the observation operation is simplified, and after the PE pipe is cut off, the second support plate can be used for shaping the cutting surface, the force can be applied to each angle of the cutting surface by rotating the hand wheel, a small amount of deformation that may occur is recovered, and the pipe opening of the PE pipe is ensured to be circular.

[0016] The annular dust collection bin and the air pipe are provided, a small amount of waste falling from the cutting surface can be temporarily stored in the annular dust collection bin through the air pipe by the external dust collector during the cutting of the PE pipe, the filter screen can be taken down for cleaning after the cutting is completed, the two air pipes are synchronously rotated with the hand wheel and the second sliding ring, the rotating ring can be independently rotated, and the two air pipes can be connected by using the quick release interface, so that when the position of the second support block is adjusted by rotating the hand wheel, the air pipe can move with the movement of the second support block, and the problem of knotting does not occur, the air pipe can be normally used in the inside of the PE pipe, the waste can be reduced by adsorbing the waste, and the intensity of the subsequent cleaning work is reduced.

[0017] The present application sets the rotating block, the rotating block is accommodated in the installation warehouse through the pulling force of the tension spring and the embedded hole during cutting, and when cutting is finished, the rotating block can be pulled out of the installation warehouse by manually pulling the embedded pull ring to overcome the pulling force of the tension spring, the arc-shaped rotating block is accommodated in the embedded groove during cutting, when cutting is finished, the rotating block is pulled out and the three arc-shaped rotating blocks are turned out of the embedded groove and the spherical block is connected into the annular groove, the pulling force of the tension spring and the reaction force of the spherical block are balanced, the rotating block can be kept outside the installation warehouse and the threaded hole for installing the scraper is leaked, different length scrapers are installed to scrape the burrs in the inner and outer circles of the cutting surface, the cutting surface of the PE pipe is flat, and the overall appearance and quality of the PE pipe are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A PE pipe fixed state schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 2 A whole structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 3 A support frame structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 4 A gas pipe structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 5 An extension table structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 6 A hand wheel structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 7 A rotating block structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 6 An area structure enlarged view of A in the above; Figure 8 A rotating clamping groove structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 9 A first support block structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 10 A second support block structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 11 An installation warehouse structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application; Figure 12A rotating block structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application. Figure 13 A scraper structure schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application. Figure 14 A second support block reset state schematic diagram of a metal cutting equipment for cutting steel skeleton PE pipe is provided for the present application.

[0019] In the figure: 1, workbench; 2, vertical column; 3, support frame; 4, electric telescopic rod; 5, cutting knife; 6, extension table; 7, first sliding groove; 8, tripod; 81, fixed block; 82, rotating clamping groove; 9, first motor; 10, first screw rod; 11, horizontal rod; 12, scale line; 13, second screw rod; 14, rotating clamping block; 15, hand wheel; 16, first support block; 17, limiting rod; 18, first sliding ring; 19, first electric cylinder; 20, rotating ring; 21, first double connecting rod; 22, first support plate; 23, second support block; 24, second sliding ring; 25, second electric cylinder; 26, second double connecting rod; 27, second support plate; 28, mounting bin; 29, tension spring; 30, annular groove; 31, annular dust collection bin; 32, air pipe; 321, quick release interface; 33, rotating block; 34, embedded hole; 35, embedded groove; 36, arc-shaped rotating block; 37, spherical block; 38, threaded hole; 39, scraper. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0021] Reference Figures 1-14 A metal cutting equipment for cutting steel skeleton PE pipe, comprising a workbench 1 and a cutting knife 5, one side of the workbench 1 is fixedly connected with a vertical column 2, one side of the vertical column 2 is slidably installed with the cutting knife 5, both sides of the workbench 1 are fixedly connected with mutually symmetrical extension tables 6, the top of each extension table 6 is provided with two rhombic first sliding grooves 7, two rhombic sliding strips are slidably connected in the two first sliding grooves 7, one end of each sliding strip is fixedly connected with the bottom of a tripod 8, the top end of the tripod 8 is fixedly connected with a fixed block 81, one side of the fixed block 81 close to the cutting knife 5 is fixedly connected with a horizontal rod 11, the outer wall of the horizontal rod 11 is uniformly provided with scale lines 12, one side of the horizontal rod 11 is slidably connected with a second screw rod 13, one side of the second screw rod 13 is threadedly connected with a first support block 16, and the end of the second screw rod 13 is fixedly connected with a second support block 23. The outer wall of the first supporting block 16 is slidably connected with a first sliding ring 18, and three first electric cylinders 19 are fixedly installed on one side of the outer wall of the first supporting block 16. The telescopic end of the first electric cylinder 19 is fixedly connected with the side wall of the first sliding ring 18. Three groups of rotatable first double connecting rods 21 are rotatably installed on the other side of the outer wall of the first supporting block 16. One side of the bottom of the first double connecting rod 21 is rotatably connected with the outer ring of the first sliding ring 18. The top of the first double connecting rod 21 is rotatably connected with an arc-shaped first supporting plate 22. The outer wall of the second supporting block 23 is slidably connected with a second sliding ring 24, and three second electric cylinders 25 are fixedly installed on one side of the outer wall of the second supporting block 23. The telescopic end of the second electric cylinder 25 is fixedly connected with the side wall of the second sliding ring 24. Three groups of rotatable second double connecting rods 26 are rotatably installed on the other side of the outer wall of the second supporting block 23. One side of the bottom of the second double connecting rod 26 is rotatably connected with the outer ring of the second sliding ring 24. The top of the second double connecting rod 26 is rotatably connected with an arc-shaped second supporting plate 27. The length of the second supporting plate 27 is less than that of the first supporting plate 22. The steel skeleton PE pipe is cut off by using the liftable cutting knife 5. The tripod 8 is used for installing the second screw rod 13, the first supporting block 16 and the second supporting block 23. The inner walls of the two ends of the PE pipe are supported and fixed by the two first supporting blocks 16 and the first supporting plates 22, so that the cutting position can be corresponded with the cutting knife 5 before the PE pipe is cut off. The first supporting plate 22 is opened and closed through the first sliding ring 18 and the first double connecting rod 21, and can support and fix the PE pipes with different inner diameters. Since the PE pipe is cut off, the cutting force of the cutting knife 5 on the cutting surface may cause the cutting surface to deform and affect the quality of the PE pipe. Therefore, the two second supporting blocks 23 are used for supporting and fixing the inner walls on both sides of the cutting surface, so that the cutting surface on both sides is effectively supported and fixed, and the deformation of the cutting surface can be effectively reduced. The position of the second supporting block 23 is adjusted according to the position of the predetermined cutting surface and the moving distance of the tripod 8, and can be directly observed through the scale line 12 on the horizontal rod 11, so that the inner supporting position of the cutting surface of the opaque steel skeleton PE pipe can be observed without observing the inside of the PE pipe, and the cutting surface can be directly observed outside through the scale line 12. Both effective support and simplified observation operation are achieved. After the PE pipe is cut off, the second supporting plate 27 can be used to shape the cutting surface. The action force of each angle of the cutting surface can be applied through the rotating handle 15, so that a small amount of deformation that may occur is recovered, and the pipe opening of the PE pipe is ensured to be circular.

[0022] As a technical optimization scheme of the present application, the top of the stand 2 is fixedly connected with a horizontal plate. Two electric telescopic rods 4 are fixedly installed on the top of the horizontal plate. The telescopic ends of the two electric telescopic rods 4 pass through the horizontal plate and are fixedly connected with the top of the cutting knife 5. The electric telescopic rod 4 is used to control the lifting of the cutting knife 5.

[0023] As a technical optimization scheme of the present application, the bottom of the stand 2 is fixedly connected with a support frame 3, the top of the end of the support frame 3 is fixedly connected with an arc-shaped frame, vertical through grooves are formed in the support frame 3 and the arc-shaped frame, and the through grooves are in the same vertical plane as the cutting knife 5. The support frame 3 facilitates the placement of the PE pipe, so that the PE pipe can be more conveniently supported and fixed, and meanwhile, the support frame 3 is located below the cutting knife 5, so as to provide external support when the cutting knife 5 is cutting, so that the cutting is more stable.

[0024] As a technical optimization scheme of the present application, the bottom of the tripod 8 is fixedly connected with a connecting beam, a first motor 9 is fixedly installed in the middle of the extension table 6, and the output shaft of the first motor 9 is fixedly connected with a first screw rod 10 which is screwed in the center of the connecting beam. The first motor 9 is used to control the position of the tripod 8, so as to realize the alignment of the cutting surface and the cutting knife 5.

[0025] As a technical optimization scheme of the present application, the hand wheel 15 is fixedly connected to one end of the second screw rod 13 close to the fixed block 81, the rotating clamping block 14 of the annular structure is fixedly connected to the side wall of the second screw rod 13 close to the fixed block 81, and the rotating clamping groove 82 matched with the rotating clamping block 14 is formed in the side wall of the fixed block 81 close to the rotating clamping block 14. When the second support block 23 is reset, the rotating clamping block 14 is screwed into the rotating clamping groove 82 for fixation, so that the relative positions of the first support block 16 and the second support block 23 can be ensured when not in use, and adjustment is not needed when used later.

[0026] As a technical optimization scheme of the present application, the three limiting rods 17 are fixedly connected to the outer circle of one side of the fixed block 81 close to the first support block 16, and the sum of the length of the limiting rod 17 and the radius of the first support block 16 is greater than the radius of the PE pipe. The limiting rod 17 is used to push the PE pipe to move to the cutting position, and can prevent the PE pipe from sliding to affect the cutting precision before and after cutting.

[0027] As a technical optimization scheme of the present application, the mounting bin 28 is formed in the side wall of the second support block 23, the pull spring 29 is fixedly connected to the inner wall of the mounting bin 28, the rotating block 33 is movably connected in the mounting bin 28, the embedded hole 34 is formed in the side wall of the rotating block 33 close to the pull spring 29, the rotating piece built in the embedded hole 34 is fixedly connected to the end of the pull spring 29, and the embedded pull ring is formed in the side wall of the rotating block 33 away from the pull spring 29. When cutting, the cutting knife 5 needs to completely pass through the gap between the two second support blocks 23, so the rotating block 33 for deburring is received in the mounting bin 28 through the pulling force of the pull spring 29 combined with the embedded hole 34 during the cutting process, and when the cutting is finished, the rotating block 33 can be pulled out of the mounting bin 28 by manually pulling the embedded pull ring to overcome the pulling force of the pull spring 29.

[0028] As a technical optimization scheme of the present application, three inner embedding grooves 35 are opened on the outer circle of the rotating block 33 away from the side of the tension spring 29, the arc-shaped rotating block 36 is rotationally connected in the inner embedding groove 35, the spherical block 37 is fixedly connected at the end of the arc-shaped rotating block 36 close to the side of the inner embedding hole 34, the annular groove 30 matched with the spherical block 37 is opened on the side wall of the second supporting block 23 of the outer circle of the installation bin 28, and a threaded hole 38 is also opened on the outer circle of the rotating block 33 away from the side of the tension spring 29, which is used for threaded connection with the scraper 39 outside. The same as the rotating block 33, the arc-shaped rotating block 36 is accommodated in the inner embedding groove 35 during the cutting process, when the burr cutting operation is performed after cutting, the rotating block 33 is pulled out and the three arc-shaped rotating blocks 36 are turned out of the inner embedding groove 35 and the spherical block 37 is connected into the annular groove 30, the tension of the tension spring 29 and the reaction force of the spherical block 37 are balanced, and the rotating block 33 can be kept outside the installation bin 28 to leak out the threaded hole 38 for installing the scraper 39. By installing the scraper 39 with different lengths, the burrs on the inner and outer circles of the cut surface can be scraped, so that the cut surface of the PE pipe is flat, and the overall appearance and quality of the PE pipe are improved.

[0029] As a technical optimization scheme of the present application, the annular dust collection bin 31 is opened on the side wall of the second supporting block 23, the filter screen is built-in in the annular dust collection bin 31, the air pipes 32 are fixedly connected on the two sides of the second supporting block 23 through the second sliding ring 24, the two air pipes 32 are communicated with the annular dust collection bin 31, the rotating ring 20 is rotationally connected on the outer circle of the first sliding ring 18, the two air pipes 32 are respectively threaded out of the two sides of the rotating ring 20, the two air pipes 32 threaded out of the rotating ring 20 are respectively threaded through the two sides of the hand wheel 15, and the two air pipes 32 are fixedly connected at the ends through the quick release interface 321. When the PE pipe is cut, a small amount of waste falling from the cut surface can be adsorbed by the external dust collector through the air pipes 32 and temporarily stored in the annular dust collection bin 31, and after cutting is completed, the filter screen can be taken down for cleaning. The two air pipes 32 can be independently rotated due to synchronous rotation with the hand wheel 15 and the second sliding ring 24, and the rotating ring 20, and the two air pipes 32 can be connected using the quick release interface 321, so that when the hand wheel 15 is rotated to adjust the position of the second supporting block 23, the air pipes 32 can move with the movement of the second supporting block 23, and problems such as knotting do not occur, and the air pipes 32 can be normally used inside the PE pipe. By adsorbing the waste, the possibility of waste remaining in the cut PE pipe can be reduced, and the intensity of subsequent cleaning work is reduced.

[0030] In use, first, the external cutting position is determined according to the required cutting length, both the second supporting blocks 23 are in the reset state, and both the tripods 8 are in the position far away from each other, the worker horizontally places the PE pipe on the top end of the supporting frame 3, pushes the PE pipe to slide one end of the PE pipe to the direction of one second supporting block 23, with the sliding of the PE pipe, the pipe opening at one end of the PE pipe is sequentially connected to the second supporting block 23 and the first supporting block 16, until the side wall of the pipe opening at one end of the PE pipe abuts against the three limiting rods 17, at this time, the horizontal distance between the cutting position of the PE pipe and the cutting knife 5 is a, the horizontal distance between the cutting position of the PE pipe and the limiting rod 17 is b, and the difference between the total length of the PE pipe and b is c, the first motor 9 under the tripod 8 corresponding to the second supporting block 23 is started, the first motor 9 drives the first screw rod 10 to rotate, so as to drive the sliding bar and the tripod 8 to slide along the first sliding groove 7 to the direction of the cutting knife 5, until the tripod 8 moves a distance equal to a, the first motor 9 is stopped, at this time, the cutting knife 5 is opposite to the cutting position of the PE pipe, the other first motor 9 drives the other tripod 8 to move to the direction of the PE pipe, until the limiting rod 17 on the first supporting block 16 on the other tripod 8 abuts against the side wall of the pipe opening at the other end of the PE pipe, at this time, the horizontal distance between the limiting rod 17 on the other first supporting block 16 and the cutting position is equal to c.

[0031] The pipe openings at both ends of the PE pipe are fixed, the extension ends of each first electric cylinder 19 on both the first supporting blocks 16 are respectively controlled to be elongated, so as to push the two first sliding rings 18 to be close to each other, that is, to drive each first double connecting rod 21 to rotate and expand, and to drive each first supporting plate 22 to expand and finally abut against the inner walls of both ends of the PE pipe, so as to realize the fixed support of the inner walls of both ends of the PE pipe, at this time, both the first supporting blocks 16 are kept in the static state by the relative fixation with the PE pipe through the action force of the inner walls of the PE pipe and the first supporting plates 22.

[0032] The two sides of the cutting section of the PE pipe are fixed and supported. Since the two first supporting blocks 16 are kept fixed relative to the PE pipe, manual rotation of the hand wheel 15 can make the second screw rod 13 rotate. Since the second screw rod 13 is in threaded connection with the first supporting block 16, rotation of the hand wheel 15 can drive the second screw rod 13 and the second supporting block 23 to slide along the horizontal rod 11. Only by rotating the two hand wheels 15 in sequence can the fixed action of the first supporting block 16 on one side of the hand wheel 15 and the PE pipe ensure that the PE pipe does not rotate. On this basis, rotation of the hand wheel 15 on the side of the recording distance b drives the second supporting block 23 to move along the horizontal rod 11 toward the cutting knife 5. When moving, the scale line 12 is observed. When the hand wheel 15 moves along the scale line 12 by a distance b, it is stopped. At this time, the end of the second supporting block 23 is opposite to the cutting knife 5. Reverse rotation of the hand wheel 15 drives the second supporting block 23 to move away from the cutting position by five millimeters, which is convenient for reserving a cutting allowance for the cutting knife 5. In the same way, rotation of the hand wheel 15 on the side of the recording distance c drives the other second supporting block 23 to move to a position five millimeters away from the cutting section. Starting of the second electric cylinders 25 makes the extension of the extension end of the second electric cylinder 25, thereby pushing the two second sliding rings 24 to move close to each other, pushing the second double connecting rods 26 and the second supporting plates 27 to unfold, and finally the second supporting plates 27 of the two second supporting blocks 23 can form support and fixation on the inner walls of the two sides of the cutting section of the PE pipe.

[0033] The PE pipe is cut. The four air pipes 32 on the two triangular frames 8 are connected by two quick-release interfaces 321 and are connected in communication with the external dust collector. The external dust collector is started, and the extension end of the electric telescopic rod 4 is extended to push the cutting knife 5 to descend along the stand 2 to cut the PE pipe. The second supporting plates 27 support and fix the two sides of the cutting section when the cutting knife 5 cuts. The cutting knife 5 cuts the PE pipe through the gap between the two second supporting blocks 23 and the through slot of the supporting frame 3. Since the two ring-shaped dust collection bins 31 are respectively located on the two sides of the cutting section, a small amount of waste generated during cutting can be adsorbed into the ring-shaped dust collection bin 31 for temporary storage. After cutting, the extension end of the electric telescopic rod 4 is retracted to drive the cutting knife 5 to rise and reset.

[0034] The PE pipe cutting surface is shaped, two first motors 9 drive two triangular frames 8 and two PE pipe segments after cutting to reset away from each other along the first sliding groove 7, the second electric cylinder 25 is controlled to retract to drive the second supporting plate 27 to retract and separate from the inner wall of the PE pipe, the hand wheel 15 is manually rotated by a certain angle, then the second electric cylinder 25 is controlled to extend to push the second supporting plate 27 to exert force on the inner wall of the PE pipe cutting surface, so that the deformation possibly existing in the inner wall of the cutting surface is recovered, the pipe opening of the PE pipe cutting surface is restored to be circular, the supporting state of the second supporting plate 27 is maintained, the rotary block 33 is manually pulled out by using the embedded pull ring, the tension spring 29 is stretched under the action of the tension of the tension spring 29 and the limiting action of the three arc-shaped rotating blocks 36 and the spherical blocks 37, the rotary block 33 is balanced under the action of force and is in a stable state, at this time, the threaded hole 38 is exposed to the installation bin 28, the scraper 39 is screwed into the threaded hole 38, and the scraper 39 is rotated to drive the rotary block 33 to make circular motion around the center of the installation bin 28, so that the burrs on the outer circle of the shaped PE pipe cutting surface can be scraped by using the scraper 39, and a shorter scraper 39 can be used to scrape the burrs on the inner circle of the PE pipe cutting surface, and the other PE pipe segment is subjected to the same shaping and burr scraping operation.

[0035] After shaping, the scraper 39 is removed, the arc-shaped rotating block 36 is stored to reset the rotary block 33, the second electric cylinder 25 is retracted, the second supporting block 23 is driven to approach the first supporting block 16 by rotating the hand wheel 15, finally, the rotating clamping block 14 on the side wall of the second screw 13 is inserted into the rotating clamping groove 82 on the side wall of the fixed block 81, the first electric cylinder 19 is controlled to retract to make the first supporting plate 22 separate from the inner wall of the PE pipe, at this time, the PE pipe after cutting can be taken out.

[0036] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technology thereof, the present application also intends to include these modifications and variations.

[0037] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A metal cutting device for cutting steel-reinforced PE pipes, comprising a worktable (1) and a cutting blade (5), characterized in that: A vertical column (2) is fixedly connected to one side of the workbench (1), and a cutting blade (5) is slidably installed on one side of the column (2). Symmetrical extension tables (6) are fixedly connected to both sides of the workbench (1). Two rhomboid first slide grooves (7) are opened on the top of the extension table (6). Rhomboid slide bars are slidably connected in the two first slide grooves (7). One end of the two slide bars is fixedly connected to the bottom of a tripod (8). A fixing block (81) is fixedly connected to the top of the tripod (8). A horizontal rod (11) is fixedly connected to the side of the fixing block (81) close to the cutting blade (5). Scale lines (12) are evenly arranged on the outer wall of the horizontal rod (11). A second screw (13) is slidably connected to one side of the horizontal rod (11). A first support block (16) is threadedly connected to one side of the second screw (13). A second support block (23) is fixedly connected to the end of the second screw (13). The outer wall of the first support block (16) is slidably connected to a first slip ring (18). Three first electric cylinders (19) are fixedly installed on one side of the outer wall of the first support block (16). The telescopic end of the first electric cylinder (19) is fixedly connected to the side wall of the first slip ring (18). Three sets of rotatable first double connecting rods (21) are rotatably installed on the other side of the outer wall of the first support block (16). The bottom side of the first double connecting rod (21) is rotatably connected to the outer ring of the first slip ring (18). The top of the first double connecting rod (21) is rotatably connected to an arc-shaped first support plate (22). The second support block (23) has a second slip ring (24) slidably connected to its outer wall. Three second electric cylinders (25) are fixedly installed on one side of the outer wall of the second support block (23). The telescopic end of the second electric cylinder (25) is fixedly connected to the side wall of the second slip ring (24). Three sets of rotatable second double connecting rods (26) are rotatably installed on the other side of the outer wall of the second support block (23). The bottom side of the second double connecting rod (26) is rotatably connected to the outer ring of the second slip ring (24). The top of the second double connecting rod (26) is rotatably connected to an arc-shaped second support plate (27). The length of the second support plate (27) is less than that of the first support plate (22).

2. The metal cutting equipment for cutting steel-reinforced PE pipes according to claim 1, characterized in that: The top of the column (2) is fixedly connected to a horizontal plate, and two electric telescopic rods (4) are fixedly installed on the top of the horizontal plate. The telescopic ends of the two electric telescopic rods (4) pass through the horizontal plate and are fixedly connected to the top of the cutting blade (5).

3. The metal cutting equipment for cutting steel-reinforced PE pipes according to claim 1, characterized in that: The bottom of the column (2) is fixedly connected to a support frame (3), and the top of the end of the support frame (3) is fixedly connected to an arc frame. The support frame (3) and the arc frame are provided with vertical through slots, and the through slots and the cutting blade (5) are on the same vertical plane.

4. The metal cutting equipment for cutting steel-reinforced PE pipes according to claim 1, characterized in that: The bottom of the tripod (8) is fixedly connected to a connecting beam, and the middle of the extension platform (6) is fixedly installed with a first motor (9). The output shaft of the first motor (9) is fixedly connected with a first screw (10) threaded to the center of the connecting beam.

5. The metal cutting equipment for cutting steel-reinforced PE pipes according to claim 1, characterized in that: A handwheel (15) is fixedly connected to one end of the second screw (13) near the fixed block (81). A rotating block (14) with an annular structure is fixedly connected to one side wall of the second screw (13) near the fixed block (81). A rotating slot (82) adapted to the rotating block (14) is opened on one side wall of the fixed block (81) near the rotating block (14).

6. The metal cutting equipment for cutting steel-reinforced PE pipes according to claim 1, characterized in that: The first support block (16) has three limiting rods (17) fixedly connected to the outer ring of the side close to the fixed block (81). The sum of the length of the limiting rod (17) and the radius of the first support block (16) is greater than the radius of the PE pipe.

7. The metal cutting equipment for cutting steel-reinforced PE pipes according to claim 1, characterized in that: The second support block (23) has an installation chamber (28) on one side wall. A tension spring (29) is fixedly connected to the inner wall of the installation chamber (28). A rotating block (33) is movably connected inside the installation chamber (28). An embedded hole (34) is provided on the side wall of the rotating block (33) close to the tension spring (29). The end of the tension spring (29) is fixedly connected to the rotating piece inside the embedded hole (34). An embedded pull ring is provided on the side wall of the rotating block (33) away from the tension spring (29) for easy pulling.

8. A metal cutting device for cutting steel-reinforced PE pipes according to claim 7, characterized in that: The rotating block (33) has three recessed grooves (35) on the outer ring away from the tension spring (29). An arc-shaped rotating block (36) is rotatably connected in the recessed groove (35). A spherical block (37) is fixedly connected to the end of the arc-shaped rotating block (36) near the recessed hole (34). The side wall of the second support block (23) on the outer ring of the mounting chamber (28) has an annular groove (30) that matches the spherical block (37). The rotating block (33) also has a threaded hole (38) on the outer ring away from the tension spring (29). The threaded hole (38) is used to connect with the external scraper (39) by thread.

9. A metal cutting device for cutting steel-reinforced PE pipes according to claim 5, characterized in that: The second support block (23) has an annular dust collection chamber (31) on its end side wall. The annular dust collection chamber (31) contains a filter screen. The second support block (23) has air pipes (32) fixedly connected to both sides of the second support block (23) through the second slip ring (24). Both air pipes (32) are connected to the annular dust collection chamber (31). The outer ring of the first slip ring (18) is rotatably connected to a rotating ring (20). The two air pipes (32) pass through both sides of the rotating ring (20) respectively. The two air pipes (32) that pass through the rotating ring (20) pass through both sides of the handwheel (15) respectively. The ends of the two air pipes (32) are fixedly connected through a quick-release interface (321).

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