A slitting equipment for PE pipe production

Abstract

The present invention discloses a slitting device for PE pipe production, which relates to the technical field of PE pipe production, including a receiving seat and a pipe body, a movable annular fixed plate is provided above the receiving seat and between two groups of support frames, a guide slider is fixedly provided at the bottom of the annular fixed plate, and the guide slider is slidably connected with the guide slide rail on the upper surface of the receiving seat, and a rotating assembly is provided on the first annular rotating plate, wherein when the cutting knife penetrates the inner wall of the pipe body and the first annular rotating plate rotates around its own axis, the pipe body is cut. The present invention controls the cutting knife to be inserted into the interior of the pipe body through the rotating assembly, and then cuts the pipe body by controlling the rotation of the first annular rotating plate. Compared with the cutting wheel, this cutting method is more "gentle", does not generate noise and PE dust, thereby avoiding hearing damage to the operator and causing lung disease, and is safer.

Description

Technical Field

[0001] The invention relates to the technical field of PE pipe production, and in particular to a slitting device for PE pipe production. Background Art

[0002] PE is polyethylene plastic. PE pipes are gradually replacing traditional pipes such as steel pipes and cement pipes in the market because of their wear resistance, acid resistance, corrosion resistance, high temperature resistance, and high pressure resistance. In particular, because this pipe is light in weight and easy to install and move, it is the first choice for new materials.

[0003] During the production process of PE pipes, they need to be cut so that their length meets the actual use requirements and is convenient for transportation. In the prior art, there are two ways to cut PE pipes. One is to cut the PE pipe by a rotating cutting wheel. This method not only consumes a lot of energy, but also generates a lot of noise during the cutting process, and also generates more PE debris to pollute the environment. The other method is to cut by a cutting blade that moves up and down. This method requires manual and slow pressure application because it is difficult to control the applied force mechanically. This not only consumes effort, but also has the possibility of flattening the PE pipe.

[0004] Therefore, it is necessary to invent a PE pipe production slitting device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a slitting device for PE pipe production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a slitting device for PE pipe production, comprising a receiving seat and a pipe body, the upper surfaces of the two ends of the receiving seat are provided with support frames for supporting and limiting the pipe body, a movable annular fixing plate is provided above the receiving seat and between the two groups of support frames, a guide slider is fixedly provided at the bottom of the annular fixing plate, the guide slider is slidably connected to the guide slide rail on the upper surface of the receiving seat, the pipe body passes through the inside of the annular fixing plate, a first annular rotating plate is rotatably provided on the surface of the annular fixing plate, an annular sliding plate is fixedly provided on the surface of the first annular rotating plate, and an annular sliding plate is fixedly provided on the surface of the first annular rotating plate and an annular sliding plate is provided on the surface of the annular fixing plate. The annular slides are slidably connected to each other, and a T-shaped slide is provided along its radial direction on the surface of the first annular rotating plate away from the annular fixed plate, and the T-shaped slide runs through the inner and outer walls of the first annular rotating plate, and a sliding block is provided for sliding inside the T-shaped slide, and the sliding block is fixedly connected to a movable rod on a side facing the tube body, and a cutting knife for cutting the tube body is fixedly provided at one end of the movable rod close to the tube body, and a rotating assembly is provided on the first annular rotating plate, and the rotating assembly drives the sliding block to move inside the T-shaped slide, wherein, when the cutting knife penetrates the inner wall of the tube body and the first annular rotating plate rotates around its own axis, the tube body is cut.

[0007] Preferably, the rotating assembly includes a second annular rotating plate and an inclined guide groove, the second annular rotating plate is rotatably connected to a side of the first annular rotating plate away from the annular fixed plate, the second annular rotating plate and the first annular rotating plate are coaxially arranged, the surface of the second annular rotating plate is evenly provided with inclined guide grooves, the sliding block is fixedly provided with a guide column on a side facing the second annular rotating plate, the guide column is inserted into the inclined guide groove, the surface of the second annular rotating plate is provided with a positioning groove, the inside of the positioning groove is inserted with a positioning column, and the side of the first annular rotating plate facing the second annular rotating plate is provided with a plurality of groups of positioning grooves matching the positioning column, and during the rotation of the second annular rotating plate, the positioning column thereon passes through the plurality of groups of positioning grooves in sequence.

[0008] Preferably, a receiving groove is provided on the side wall where the guide slider contacts the guide rail, and an airbag component is fixedly provided inside the receiving groove. The airbag component has two states: expansion and contraction. When the airbag component is expanded, it extends out of the outer port of the receiving groove and is supported tightly on the inner wall of the guide rail. When the airbag component is in a contracted state, the airbag component is stored inside the receiving groove. An inflation component is provided on the first annular rotating plate, and a gas delivery component for delivering the gas generated by the inflation component to the interior of the airbag component is provided on the annular fixed plate.

[0009] Preferably, the inflation component includes an inflation groove, a spring compression tube and an extrusion plate, the inflation groove is located on the side wall of the T-shaped slide groove close to the annular fixed plate, an extrusion plate is slidingly provided inside the inflation groove, the extrusion plate is fixedly connected to the surface of the sliding block, a side of the extrusion plate close to the inner wall of the first annular rotating plate is fixedly connected to one end of the spring compression tube, the other end of the spring compression tube is fixedly connected to one end of the inflation groove close to the inner wall of the first annular rotating plate, an inflation cavity is provided on the annular slide plate, the inflation cavity is communicated with an end of the spring compression tube away from the extrusion plate, an arc-shaped protrusion is provided on the side of the annular slide plate away from the first annular rotating plate, the arc-shaped protrusion corresponds to the position of the inflation cavity, and an inflation channel communicated with the inside of the inflation cavity is provided on the arc-shaped protrusion.

[0010] Preferably, the gas delivery assembly includes a gas delivery cavity, an elastic sealing plug, an inflation port, an extrusion column and a gas delivery channel, the gas delivery cavity is located inside the annular fixing plate, the gas delivery cavity is interconnected with the inside of the annular slide groove through the inflation port, and the gas delivery cavity is also interconnected with the inside of the airbag component through the gas delivery channel, an annular rubber ring is fixedly provided on the inner wall of the inflation port, the annular rubber ring extends out of the inflation port near the end of the annular slide groove, an elastic sealing plug is provided inside the gas delivery cavity for elastically sealing the inflation port away from the end of the annular slide groove, a side of the elastic sealing plug facing away from the annular slide plate is fixedly connected to the inner wall of the gas delivery cavity by a compression spring, an extrusion column is fixedly provided on a side of the elastic sealing plug facing the annular slide plate, the extrusion column deviates from the inflation channel on the arc-shaped protrusion, and when the arc-shaped protrusion corresponds to the position of the inflation port, the elastic sealing plug opens the inflation port.

[0011] Preferably, a telescopic cavity is opened at one end of the movable rod facing the tube body, and the end of the cutting knife away from the tube body is movably inserted into the telescopic cavity. The movable rod is provided with a sawing component for controlling the cutting knife to move back and forth along the radial direction of the tube body, and the cutting knife is provided with saw teeth in its rotation direction.

[0012] Preferably, the sawing assembly includes a wedge block, an extrusion rod, a fixed plate and a convex plate, the wedge block is slidably connected to the inside of the telescopic cavity, the side of the wedge block facing the cutting knife is an inclined surface, and the cutting knife is fixedly connected to the inclined surface of the wedge block, the side of the wedge block facing away from the tube body is fixedly connected to the end of the telescopic cavity away from the tube body through a compression spring, the end of the telescopic cavity close to the tube body is fixedly provided with a fixed plate, the side of the fixed plate facing away from the cutting knife is fixedly connected to one end of the extrusion rod through a compression spring, the other end of the extrusion rod passes through the outer surface of the movable rod, the end of the extrusion rod close to the cutting knife is fixedly provided with a convex plate on the side facing the wedge block, and the annular fixed plate is provided with an extrusion assembly for controlling the extrusion rod to retract into the telescopic cavity.

[0013] Preferably, the extrusion assembly includes a fixing ring and extrusion protrusions, the fixing ring is installed inside the annular fixing plate through a mounting plate, the fixing ring is coaxially arranged with the annular fixing plate, and a plurality of groups of extrusion protrusions are fixedly provided on the surface of the fixing ring facing the extrusion rod, and in the process of the extrusion rod being driven to rotate by the first annular rotating plate, the extrusion rod passes through the extrusion protrusions on the surface of the fixing ring in sequence.

[0014] Preferably, a roller is movably provided at one end of the movable rod facing the tube body through a mounting plate, and when the movable rod rotates, the curved surface of the roller rolls around the outer surface of the tube body.

[0015] Preferably, the annular fixed plate is provided with a movable plug rod for positioning the first annular rotating plate, the movable plug rod is movably inserted on the annular fixed plate, and the first annular rotating plate is provided with a socket on one side facing the annular fixed plate for interlocking with the movable plug rod.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The present invention controls the cutting knife to be inserted into the interior of the tube body through the rotating assembly, and then cuts the tube body by controlling the rotation of the first annular rotating plate. Compared with the cutting wheel, this cutting method is more "gentle", does not generate noise and PE dust, thereby avoiding hearing damage and lung disease to the operator, and is safer. Compared with the cutting blade that moves up and down, the cutting method in the present invention does not cause extrusion damage to the tube body. In addition, the cutting knife in the present invention adopts a non-vertical cutting method, and the size of the cutting knife is much smaller than that of the traditional cutting blade. This allows the cutting knife to maintain good rigidity even if it is thin, and the thin cutting knife makes the cutting seam smoother and the cutting effect better.

[0018] 2. The combination of the inflation component, the gas delivery component and the airbag component in the present invention can fix the position of the annular fixing plate, thereby preventing the position of the annular fixing plate from changing during the rotation of the first annular rotating plate and the second annular rotating plate, thereby preventing the cutting from deviating;

[0019] 3. When the cutting knife is cutting the pipe body, the cutting knife moves back and forth along the radial direction of the pipe body, and the cutting knife is provided with saw teeth in the direction of rotation, so that the cutting knife acts as a "saw", which makes the cutting of the pipe body more labor-saving and prevents the cutting knife from breaking;

[0020] 4. The roller plays the role of squeezing and fixing the tube body, and also plays the role of guiding the cutting knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a first structural schematic diagram of the slitting equipment for PE pipe production of the present invention.

[0022] Figure 2 For the present invention Figure 1 Enlarged structural diagram at A in the middle.

[0023] Figure 3 It is a schematic diagram of the surface structure of the first annular rotating plate of the present invention.

[0024] Figure 4 This is a second structural schematic diagram of the slitting equipment for PE pipe production of the present invention.

[0025] Figure 5 It is a schematic diagram of the internal structure of the annular fixed plate and the first annular rotating plate of the present invention.

[0026] Figure 6 For the present invention Figure 5 Enlarged structural diagram at B in the middle.

[0027] Figure 7 For the present invention Figure 5 Enlarged structural diagram at point C in the middle.

[0028] Figure 8 For the present invention Figure 5 Enlarged structural diagram at D in the middle.

[0029] Fig. 9 It is a schematic structural diagram of the sawing assembly of the present invention.

[0030] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at E in the middle.

[0031] Fig.11 It is a schematic diagram of the surface structure of the fixing ring of the present invention.

[0032] Fig.12 It is a structural schematic diagram of the movable plug rod of the present invention.

[0033] Fig.13 It is a schematic structural diagram of the cutting knife of the present invention.

[0034] In the figure: 1, receiving seat; 2, supporting frame; 3, tube body; 4, guide rail; 5, annular fixed plate; 6, first annular rotating plate; 7, second annular rotating plate; 8, inclined guide groove; 9, guide column; 10, T-shaped slide groove; 11, sliding block; 12, positioning column; 13, positioning groove; 14, guide slider; 15, scale line; 16, annular slide plate; 17, inflation groove; 18, annular slide groove; 19, gas delivery cavity; 20, elastic sealing plug; 21, inflation port; 22. Extrusion column; 23. Air delivery channel; 24. Arc-shaped protrusion; 25. Annular rubber ring; 26. Inflating channel; 27. Inflating cavity; 28. Movable rod; 29. ​​Cutting knife; 30. Spring compression tube; 31. Storage groove; 32. Airbag component; 33. Fixed ring; 34. Extrusion protrusion; 35. Telescopic cavity; 36. Roller; 37. Wedge block; 38. Extrusion rod; 39. Fixed plate; 40. Protruding plate; 41. Movable plug rod; 42. Socket; 43. Extrusion plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "several" do not necessarily indicate a quantitative limitation. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0037] The present invention provides Figure 1-13 The PE pipe production slitting equipment shown in the figure comprises a receiving seat 1 and a pipe body 3, the upper surfaces of the two ends of the receiving seat 1 are provided with support frames 2 for supporting and limiting the pipe body 3, a movable annular fixing plate 5 is provided above the receiving seat 1 and between the two groups of support frames 2, a guide slider 14 is fixedly provided at the bottom of the annular fixing plate 5, and the guide slider 14 is slidably connected to the guide slide rail 4 on the upper surface of the receiving seat 1, the pipe body 3 passes through the inside of the annular fixing plate 5, and a first annular rotating plate 6 is rotatably provided on the surface of the annular fixing plate 5, and an annular sliding plate 16 is fixedly provided on the surface of the first annular rotating plate 6, and the annular sliding groove 18 opened on the surface of the annular fixing plate 5 is slidably connected to each other, A T-shaped slot 10 is provided in the radial direction of the first annular rotating plate 6 on the surface facing away from the annular fixed plate 5, and the T-shaped slot 10 passes through the inner and outer walls of the first annular rotating plate 6, and a sliding block 11 is provided for sliding inside the T-shaped slot 10, and the sliding block 11 is fixedly connected to the movable rod 28 on the side facing the tube body 3, and a cutting knife 29 for cutting the tube body 3 is fixedly provided at one end of the movable rod 28 close to the tube body 3, and a rotating assembly is provided on the first annular rotating plate 6, and the rotating assembly drives the sliding block 11 to move inside the T-shaped slot 10, wherein when the cutting knife 29 penetrates the inner wall of the tube body 3 and the first annular rotating plate 6 rotates around its own axis, the tube body 3 is cut.

[0038] In actual operation of the present invention, when it is necessary to cut the tube body 3, the two ends of the tube body 3 can be supported and fixed by the support frame 2, and the tube body 3 passes through the inside of the annular fixing plate 5, and the annular fixing plate 5 can be moved between the two groups of support frames 2, and then the annular fixing plate 5 can be moved to the part of the tube body 3 that needs to be cut, and then the sliding block 11 is moved in the T-shaped slide groove 10 toward the tube body 3 by the rotating assembly, so that the movable rod 28 will drive the cutting knife 29 to move toward the tube body 3, and the cutting knife 29 is inserted into the inside of the tube body 3 and penetrates the inner wall of the tube body 3. At this time, the first annular rotating plate 6 is rotated, and the cutting knife 29 can cut the edge of the tube body 3;

[0039] The present invention controls the cutting knife 29 to be inserted into the interior of the tube body 3 through a rotating assembly, and then cuts the tube body 3 by controlling the rotation of the first annular rotating plate 6. This cutting method is more "gentle" than a cutting wheel, and does not generate noise and PE dust, thereby avoiding hearing damage and lung disease to the operator, and is safer. Compared with a cutting blade that moves up and down, the cutting method of the present invention does not cause extrusion damage to the tube body 3. In addition, since the cutting knife 29 of the present invention adopts a non-vertical cutting method, the size of the cutting knife 29 is much smaller than that of a traditional cutting blade, which enables the cutting knife 29 to maintain good rigidity even if it is thin, and the thin cutting knife 29 makes the cutting seam smoother and the cutting effect better.

[0040] At the same time, in order to achieve fixed-distance cutting, a scale line 15 can be set on the surface of the receiving seat 1, and then the fixed-distance cutting of the tube body 3 can be achieved by moving the annular fixing plate 5, which is more accurate;

[0041] It is worth mentioning that the number of the annular fixing plates 5 in the present invention is one or more groups, and the first annular rotating plates 6 corresponding to the annular fixing plates 5 and the components thereon are also provided with one or more groups. When the annular fixing plates 5 and the first annular rotating plates 6 are provided with multiple groups, multiple parts of the pipe body 3 can be cut at the same time, and the cutting efficiency is higher. At the same time, the device does not need to be powered by power equipment, which is more energy-saving. At the same time, it can continue to produce without being affected by power, and is particularly suitable for the slitting production of PE pipes in areas with harsh environments and frequent power outages;

[0042] It should be noted that the rotating component in the present invention can select any form of a single component or linkage component that can control the sliding block 11 to move back and forth inside the T-shaped slide groove 10. For example, an electric push rod or a manual cylinder can be used to change the position of the sliding block 11 by inflating and exhausting the interior of the cylinder. Any linkage method that converts rotational motion into linear motion can also be used, so as to achieve the back and forth movement of the sliding block 11.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the rotating assembly includes a second annular rotating plate 7 and an inclined guide groove 8, the second annular rotating plate 7 is rotatably connected to the side of the first annular rotating plate 6 away from the annular fixed plate 5, the second annular rotating plate 7 and the first annular rotating plate 6 are coaxially arranged, the surface of the second annular rotating plate 7 is evenly provided with inclined guide grooves 8, the sliding block 11 is fixedly provided with a guide column 9 on the side facing the second annular rotating plate 7, the guide column 9 is inserted into the inclined guide groove 8, the surface of the second annular rotating plate 7 is provided with a positioning groove 13, the inside of the positioning groove 13 is inserted with a positioning column 12, and the first annular rotating plate 6 is provided with a plurality of groups of positioning grooves 13 matching the positioning column 12 on the side facing the second annular rotating plate 7, and during the rotation of the second annular rotating plate 7, the positioning column 12 thereon passes through the plurality of groups of positioning grooves 13 in sequence.

[0044] In actual operation, since the guide column 9 is located inside the inclined guide groove 8, when the second annular rotating plate 7 rotates, the change in the position of the inclined guide groove 8 can control the change in the position of the guide column 9, thereby changing the position of the sliding block 11 inside the T-shaped slide groove 10. The positioning column 12 and the positioning groove 13 cooperate to fix the second annular rotating plate 7 on the first annular rotating plate 6, so that the first annular rotating plate 6 and the second annular rotating plate 7 are relatively stationary, thereby keeping the position of the sliding block 11 inside the T-shaped slide groove 10 no longer changing. Figure 1 and Figure 4 As shown, when the guide column 9 is located at the outer end of the inclined guide groove 8, the movable rod 28 and the cutting knife 29 are accommodated in the T-shaped slide groove 10, and the cutting knife 29 does not contact the surface of the tube body 3. At this time, the annular fixing plate 5 can be moved to a suitable cutting position, and when the guide column 9 moves to the inner end of the inclined guide groove 8, the movable rod 28 and the cutting knife 29 extend from one end of the T-shaped slide groove 10 close to the tube body 3, and the cutting knife 29 gradually inserts into the interior of the tube body 3 and penetrates the tube body 3. At this time, the first annular rotating plate 6 and the second annular rotating plate 7 are rotated at the same time, and the cutting knife 29 will cut the tube body 3 evenly along the circumference of the tube body 3.

[0045] In order to fix the position of the annular fixed plate 5 and prevent the position of the annular fixed plate 5 from changing during the rotation of the first annular rotating plate 6 and the second annular rotating plate 7, thereby causing the cutting to deviate, a receiving groove 31 is provided on the side wall where the guide slider 14 contacts the guide rail 4, and an airbag component 32 is fixedly provided inside the receiving groove 31. The airbag component 32 has two states, expansion and contraction. When the airbag component 32 is expanded, it extends out of the outer port of the receiving groove 31 and is tightened on the inner wall of the guide rail 4. When the airbag component 32 is in the contracted state, the airbag component 32 is stored inside the receiving groove 31. An inflation component is provided on the first annular rotating plate 6, and a gas delivery component for delivering the gas generated by the inflation component to the inside of the airbag component 32 is provided on the annular fixed plate 5.

[0046] like Figure 5 and Figure 8 As shown in the figure, when the gas generated by the inflation assembly on the first annular rotating plate 6 enters the interior of the airbag component 32 through the gas delivery assembly on the annular fixed plate 5, the airbag component 32 will expand and extend out of the outer port of the receiving groove 31. The airbag component 32 makes the guide slider 14 at the bottom end of the annular fixed plate 5 tighten against the inner wall of the guide rail 4, thereby fixing the position of the annular fixed plate 5. When the gas inside the airbag component 32 flows back to the interior of the inflation assembly through the gas delivery assembly again, the airbag component 32 collapses and is received in the interior of the receiving groove 31, so that the guide slider 14 can be moved to the next cutting position in the interior of the guide rail 4.

[0047] Specifically, Figure 5 , Figure 6 and Figure 7 As shown in, the inflation component includes an inflation groove 17, a spring compression tube 30 and an extrusion plate 43, the inflation groove 17 is located on the side wall of the T-shaped slide groove 10 close to the annular fixed plate 5, an extrusion plate 43 is slidingly provided inside the inflation groove 17, the extrusion plate 43 is fixedly connected to the surface of the sliding block 11, a side of the extrusion plate 43 close to the inner wall of the first annular rotating plate 6 is fixedly connected to one end of the spring compression tube 30, the other end of the spring compression tube 30 is fixedly connected to one end of the inflation groove 17 close to the inner wall of the first annular rotating plate 6, an inflation chamber 27 is provided on the annular slide plate 16, the inflation chamber 27 is communicated with one end of the spring compression tube 30 away from the extrusion plate 43, an arc-shaped protrusion 24 is provided on the side of the annular slide plate 16 away from the first annular rotating plate 6, the arc-shaped protrusion 24 corresponds to the position of the inflation chamber 27, and an inflation channel 26 is provided on the arc-shaped protrusion 24 that is communicated with the inside of the inflation chamber 27.

[0048] When the sliding block 11 moves toward the direction close to the tube body 3, the extrusion plate 43 fixedly connected to the sliding block 11 will squeeze the spring compression tube 30, and the gas inside the spring compression tube 30 will enter the interior of the inflation cavity 27, and then be blown out to the interior of the gas delivery component through the inflation channel 26.

[0049] More specifically, if Figure 6 As shown in the figure, the gas delivery assembly includes a gas delivery cavity 19, an elastic sealing plug 20, an air filling port 21, an extrusion column 22 and a gas delivery channel 23. The gas delivery cavity 19 is located inside the annular fixing plate 5. The gas delivery cavity 19 is interconnected with the inside of the annular chute 18 through the air filling port 21, and the gas delivery cavity 19 is also interconnected with the inside of the airbag member 32 through the air filling channel 23. An annular rubber ring 25 is fixedly provided on the inner wall of the air filling port 21. The annular rubber ring 25 extends out of the end of the air filling port 21 close to the annular chute 18. An elastic sealing plug 20 is provided inside the gas delivery cavity 19 to elastically seal the inflation port 21 away from the end of the annular slide 18. The side of the elastic sealing plug 20 facing away from the annular slide 16 is fixedly connected to the inner wall of the gas delivery cavity 19 through a compression spring. An extrusion column 22 is fixedly provided on the side of the elastic sealing plug 20 facing the annular slide 16. The extrusion column 22 deviates from the inflation channel 26 on the arc-shaped protrusion 24, and when the arc-shaped protrusion 24 corresponds to the position of the inflation port 21, the elastic sealing plug 20 opens the inflation port 21.

[0050] In specific operation, when the arc-shaped protrusion 24 is at a position corresponding to the inflation port 21, the arc-shaped protrusion 24 will squeeze the extrusion column 22 fixedly connected to the elastic sealing plug 20, and the elastic sealing plug 20 will be separated from the port of the inflation port 21 located inside the gas delivery cavity 19, and then the gas ejected from the inflation channel 26 will enter the inside of the gas delivery cavity 19 through the inflation port 21, and then enter the inside of the airbag member 32 through the gas delivery channel 23 and expand it;

[0051] When the first annular rotating plate 6 needs to be rotated and the tube body 3 is cut, the first annular rotating plate 6 will drive the annular slide plate 16 to rotate inside the annular slide groove 18, and the arc-shaped protrusion 24 will quickly rotate to a position away from the inflation port 21. At this time, the elastic sealing plug 20 will block the inflation port 21 under the action of the compression spring fixed thereto, and the gas will not escape from the inflation port 21 until the first annular rotating plate 6 rotates one circle and the arc-shaped protrusion 24 on the annular slide plate 16 coincides with the inflation port 21 again. At this time, the inflation port 21 is opened again. When the second annular rotating plate 7 rotates and drives the sliding block 11 to move away from the tube body 3, the spring compression tube 30 fixedly connected to the extrusion plate 43 gradually extends, and the gas inside the airbag part 32 will flow back to the inside of the spring compression tube 30 through the gas delivery channel 23, the gas delivery cavity 19, the inflation port 21, etc. At this time, the airbag part 32 will collapse again and be stored inside the airbag part 32;

[0052] In summary, when the second annular rotating plate 7 rotates to control the cutting knife 29 to insert into the tube body 3, the gas inside the spring compression tube 30 will enter the interior of the airbag part 32 to expand it, and then fix the position of the guide slider 14 inside the guide rail 4, so as to position the annular fixed plate 5 to prevent the position of the annular fixed plate 5 from moving when the first annular rotating plate 6 rotates, causing cutting deviations. After the first annular rotating plate 6 rotates one circle to complete the cutting, the gas inside the airbag part 32 flows back to the interior of the spring compression tube 30 again. At this time, the guide slider 14 can move back and forth inside the guide rail 4 again, and then the annular fixed plate 5 can be moved to the next part to be cut.

[0053] In order to prevent the cutting knife 29 from breaking during the cutting process and to reduce the resistance of the cutting knife 29 during the cutting process, a telescopic cavity 35 is opened at the end of the movable rod 28 facing the tube body 3, and the end of the cutting knife 29 away from the tube body 3 is movably inserted into the telescopic cavity 35. A sawing component for controlling the cutting knife 29 to move back and forth along the radial direction of the tube body 3 is provided on the movable rod 28, and saw teeth are provided on the cutting knife 29 in its rotation direction.

[0054] During the process of cutting the tube body 3, the cutting knife 29 moves back and forth along the radial direction of the tube body 3, and the cutting knife 29 is provided with saw teeth in its rotation direction, so that the cutting knife 29 acts as a "saw", which makes the cutting of the tube body 3 more labor-saving and prevents the cutting knife 29 from breaking.

[0055] like Fig. 9 and Fig.10 As shown in, the sawing assembly includes a wedge block 37, an extrusion rod 38, a fixed plate 39 and a convex plate 40. The wedge block 37 is slidably connected to the inside of the telescopic cavity 35. The side of the wedge block 37 facing the cutting knife 29 is an inclined surface, and the cutting knife 29 is fixedly connected to the inclined surface of the wedge block 37. The side of the wedge block 37 facing away from the tube body 3 is fixedly connected to the end of the telescopic cavity 35 away from the tube body 3 through a compression spring. The end of the telescopic cavity 35 close to the tube body 3 is fixedly provided with a fixed plate 39. The side of the fixed plate 39 facing away from the cutting knife 29 is fixedly connected to one end of the extrusion rod 38 through a compression spring. The other end of the extrusion rod 38 passes through the outer surface of the movable rod 28. The end of the extrusion rod 38 close to the cutting knife 29 is fixedly provided with a convex plate 40 facing the wedge block 37. The annular fixed plate 5 is provided with an extrusion assembly for controlling the extrusion rod 38 to retract into the telescopic cavity 35.

[0056] When the movable rod 28 rotates with the first annular rotating plate 6, the squeezing rod 38 on the movable rod 28 will intermittently pass through the squeezing assembly. When the squeezing rod 38 contacts the squeezing assembly, the squeezing rod 38 is squeezed and moves in the direction close to the cutting knife 29. At this time, the convex plate 40 on the squeezing rod 38 no longer squeezes the wedge block 37 upward. The wedge block 37 will move downward under the action of the compression spring fixed thereto, thereby driving the cutting knife 29 to move downward. When the squeezing rod 38 moves to a position deviating from the squeezing assembly, the squeezing rod 38 will move in the direction away from the cutting knife 29 under the action of the compression spring fixed thereto. The convex plate 40 on the squeezing rod 38 will squeeze the bottom of the wedge block 37 and move the wedge block 37 upward. At this time, the wedge block 37 will drive the cutting knife 29 to move upward, thereby realizing the up and down movement of the cutting knife 29.

[0057] Specifically, the extrusion assembly includes a fixing ring 33 and an extrusion protrusion 34. The fixing ring 33 is installed inside the annular fixing plate 5 through a mounting plate. The fixing ring 33 is coaxially arranged with the annular fixing plate 5. A plurality of groups of extrusion protrusions 34 are fixedly arranged on the surface of the fixing ring 33 facing the extrusion rod 38. During the process of the extrusion rod 38 driven by the first annular rotating plate 6 to rotate, the extrusion rod 38 passes through the extrusion protrusions 34 on the surface of the fixing ring 33 in sequence.

[0058] When the movable rod 28 rotates with the first annular rotating plate 6, the squeezing rod 38 on the movable rod 28 will intermittently pass through the squeezing protrusion 34 on the fixed ring 33. When the squeezing rod 38 contacts the squeezing protrusion 34, the squeezing rod 38 is squeezed and moves in the direction close to the cutting knife 29. At this time, the convex plate 40 on the squeezing rod 38 no longer squeezes the wedge block 37 upward. The wedge block 37 will move downward under the action of the compression spring fixed thereto, thereby driving the cutting knife 29 to move downward. When the squeezing rod 38 moves to a position deviating from the squeezing protrusion 34, the squeezing rod 38 will move in the direction away from the cutting knife 29 under the action of the compression spring fixed thereto. The convex plate 40 on the squeezing rod 38 will squeeze the bottom of the wedge block 37 and make the wedge block 37 move upward. At this time, the wedge block 37 will drive the cutting knife 29 to move upward, thereby realizing the up and down movement of the cutting knife 29.

[0059] like Fig. 9 and Fig.13 As shown in the figure, a roller 36 is movably provided at one end of the movable rod 28 facing the tube body 3 through a mounting plate. When the movable rod 28 rotates, the curved surface of the roller 36 rolls around the outer surface of the tube body 3. The roller 36 serves to squeeze and fix the tube body 3, and also serves to guide the cutting knife 29.

[0060] like Fig.12As shown in the figure, the annular fixed plate 5 is provided with a movable plug rod 41 for positioning the first annular rotating plate 6, the movable plug rod 41 is movably inserted on the annular fixed plate 5, and the first annular rotating plate 6 is provided with a socket 42 which is plugged into the movable plug rod 41 on one side facing the annular fixed plate 5.

[0061] Specifically, the movable plug rod 41 cooperates with the socket 42 to fix the position of the first annular rotating plate 6. When the second annular rotating plate 7 is rotated, the position of the first annular rotating plate 6 can be fixed by the movable plug rod 41 and the socket 42 to prevent the first annular rotating plate 6 from rotating with the second annular rotating plate 7. When the second annular rotating plate 7 is rotated to a suitable position and the positioning column 12 on the second annular rotating plate 7 is plugged into the positioning groove 13 on the first annular rotating plate 6, the movable plug rod 41 can be pulled out of the socket 42, so that the first annular rotating plate 6 can be rotated to cut the tube body 3.

[0062] Working principle: In actual operation of the present invention, when it is necessary to cut the tube body 3, the two ends of the tube body 3 can be supported and fixed by the support frame 2, and at the same time, the tube body 3 passes through the inside of the annular fixing plate 5, and the annular fixing plate 5 can be moved between the two groups of support frames 2, and then the annular fixing plate 5 can be moved to the part of the tube body 3 that needs to be cut, and then the sliding block 11 is moved in the direction close to the tube body 3 in the T-shaped slide groove 10 by the rotating assembly, so that the movable rod 28 will drive the cutting knife 29 to move in the direction close to the tube body 3, and the cutting knife 29 is inserted into the inside of the tube body 3 and penetrates the inner wall of the tube body 3. At this time, the first annular rotating plate 6 is rotated, and the cutting knife 29 can cut the edge of the tube body 3;

[0063] The present invention controls the cutting knife 29 to be inserted into the interior of the tube body 3 through a rotating assembly, and then cuts the tube body 3 by controlling the rotation of the first annular rotating plate 6. This cutting method is more "gentle" than a cutting wheel, and does not generate noise and PE dust, thereby avoiding hearing damage and lung disease to the operator, and is safer. Compared with a cutting blade that moves up and down, the cutting method of the present invention does not cause extrusion damage to the tube body 3. In addition, since the cutting knife 29 of the present invention adopts a non-vertical cutting method, the size of the cutting knife 29 is much smaller than that of a traditional cutting blade, which enables the cutting knife 29 to maintain good rigidity even if it is thin, and the thin cutting knife 29 makes the cutting seam smoother and the cutting effect better.

[0064] At the same time, in order to achieve fixed-distance cutting, a scale line 15 can be set on the surface of the receiving seat 1, and then the fixed-distance cutting of the tube body 3 can be achieved by moving the annular fixing plate 5, which is more accurate;

[0065] It is worth mentioning that the number of annular fixing plates 5 in the present invention is one or more groups, and the first annular rotating plate 6 corresponding to the annular fixing plate 5 and the components thereon are also provided with one or more groups. When the annular fixing plate 5 and the first annular rotating plate 6 are provided with multiple groups, multiple parts of the pipe body 3 can be cut at the same time, and the cutting efficiency is higher. At the same time, the device does not need to be powered by electrical equipment, which is more energy-saving. At the same time, continuous production can be carried out without being affected by electricity. It is particularly suitable for the slitting production of PE pipes in areas with harsh environments and frequent power outages.

Claims

1. A slitting device for PE pipe production, comprising a receiving seat (1) and a pipe body (3), characterized in that: The upper surfaces of both ends of the receiving seat (1) are provided with support frames (2) for supporting and limiting the tube body (3); a movable annular fixing plate (5) is provided above the receiving seat (1) and between the two groups of support frames (2); a guide slider (14) is fixedly provided at the bottom of the annular fixing plate (5); the guide slider (14) is slidably connected to the guide slide rail (4) on the upper surface of the receiving seat (1); the tube body (3) passes through the inside of the annular fixing plate (5); a first annular rotating plate (6) is rotatably provided on the surface of the annular fixing plate (5); an annular sliding plate (16) is fixedly provided on the surface of the first annular rotating plate (6) and is slidably connected to an annular sliding groove (18) provided on the surface of the annular fixing plate (5); the first annular rotating plate (6) is away from the annular fixing plate The surface of the fixed plate (5) is provided with a T-shaped slide groove (10) arranged along its radial direction, and the T-shaped slide groove (10) penetrates the inner and outer walls of the first annular rotating plate (6), and a sliding block (11) is slidably arranged inside the T-shaped slide groove (10), and the sliding block (11) is fixedly connected to a movable rod (28) on a side facing the tube body (3), and a cutting knife (29) for cutting the tube body (3) is fixedly arranged on an end of the movable rod (28) close to the tube body (3), and a rotating assembly is provided on the first annular rotating plate (6), and the rotating assembly drives the sliding block (11) to move inside the T-shaped slide groove (10), wherein when the cutting knife (29) penetrates the inner wall of the tube body (3) and the first annular rotating plate (6) rotates around its own axis, the tube body (3) is cut; The rotating assembly comprises a second annular rotating plate (7) and an inclined guide groove (8), wherein the second annular rotating plate (7) is rotatably connected to a side of the first annular rotating plate (6) away from the annular fixed plate (5), the second annular rotating plate (7) and the first annular rotating plate (6) are coaxially arranged, the surface of the second annular rotating plate (7) is evenly provided with inclined guide grooves (8), a side of the sliding block (11) facing the second annular rotating plate (7) is fixedly provided with a guide column (9), the guide column (9) is inserted into the inclined guide groove (8), the surface of the second annular rotating plate (7) is provided with a positioning groove (13), the inside of the positioning groove (13) is inserted with a positioning column (12), and a side of the first annular rotating plate (6) facing the second annular rotating plate (7) is provided with a plurality of groups of positioning grooves (13) matching the positioning column (12), and during the rotation of the second annular rotating plate (7), the positioning column (12) thereon passes through the plurality of groups of positioning grooves (13) in sequence; A receiving groove (31) is provided on the side wall of the guide sliding block (14) in contact with the guide sliding rail (4), and an airbag component (32) is fixedly provided inside the receiving groove (31). The airbag component (32) has two states: expansion and contraction. When the airbag component (32) is expanded, it extends out of the outer end of the receiving groove (31) and is tightly supported on the inner wall of the guide sliding rail (4). When the airbag component (32) is in the contracted state, the airbag component (32) is stored inside the receiving groove (31). An inflatable component is provided on the first annular rotating plate (6), and a gas delivery component for delivering gas generated by the inflatable component to the inside of the airbag component (32) is provided on the annular fixed plate (5); The inflatable component comprises an inflatable groove (17), a spring compression tube (30) and an extrusion plate (43). The inflatable groove (17) is located on the side wall of the T-shaped slide groove (10) close to the annular fixed plate (5). The inflatable groove (17) is provided with an extrusion plate (43) for sliding inside. The extrusion plate (43) is fixedly connected to the surface of the sliding block (11). One side of the extrusion plate (43) close to the inner wall of the first annular rotating plate (6) is fixedly connected to one end of the spring compression tube (30). The other end of the spring compression tube (30) is fixedly connected to the inflatable groove (17). ) is fixedly connected to one end of the annular slide plate (16) close to the inner wall of the first annular rotating plate (6), an air-charging chamber (27) is provided on the annular slide plate (16), the air-charging chamber (27) is communicated with one end of the spring compression tube (30) away from the extrusion plate (43), an arc-shaped protrusion (24) is provided on one side of the annular slide plate (16) away from the first annular rotating plate (6), the arc-shaped protrusion (24) corresponds to the position of the air-charging chamber (27), and an air-charging channel (26) is provided on the arc-shaped protrusion (24) and communicated with the inside of the air-charging chamber (27); The gas delivery assembly comprises a gas delivery cavity (19), an elastic sealing plug (20), a gas charging port (21), an extrusion column (22) and a gas delivery channel (23); the gas delivery cavity (19) is located inside the annular fixing plate (5); the gas delivery cavity (19) is connected to the inside of the annular slide groove (18) through the gas charging port (21); and the gas delivery cavity (19) is also connected to the inside of the airbag component (32) through the gas charging channel (23); an annular rubber ring (25) is fixedly provided on the inner wall of the gas charging port (21); the annular rubber ring (25) extends out of the gas charging port (21) near the end of the annular slide groove (18). An elastic sealing plug (20) is provided inside the gas delivery cavity (19) to elastically seal the inflation port (21) away from the end of the annular slide groove (18). The side of the elastic sealing plug (20) facing away from the annular slide plate (16) is fixedly connected to the inner wall of the gas delivery cavity (19) through a compression spring. The side of the elastic sealing plug (20) facing the annular slide plate (16) is fixedly provided with an extrusion column (22). The extrusion column (22) deviates from the inflation channel (26) on the arc-shaped protrusion (24). When the arc-shaped protrusion (24) corresponds to the position of the inflation port (21), the elastic sealing plug (20) opens the inflation port (21); The movable rod (28) is provided with a telescopic cavity (35) at one end facing the tube body (3), and the end of the cutting knife (29) away from the tube body (3) is movably inserted into the telescopic cavity (35). The movable rod (28) is provided with a sawing assembly for controlling the cutting knife (29) to move back and forth along the radial direction of the tube body (3), and the cutting knife (29) is provided with saw teeth in the direction of its rotation. The sawing assembly comprises a wedge block (37), a squeeze rod (38), a fixing plate (39) and a convex plate (40); the wedge block (37) is slidably connected inside the telescopic cavity (35); a side of the wedge block (37) facing the cutting knife (29) is an inclined surface, and the cutting knife (29) is fixedly connected to the inclined surface of the wedge block (37); a side of the wedge block (37) facing away from the tube body (3) is fixedly connected to an end of the telescopic cavity (35) away from the tube body (3) through a compression spring; the telescopic cavity (35) A fixing plate (39) is fixedly provided at one end close to the tube body (3); a side of the fixing plate (39) facing away from the cutting knife (29) is fixedly connected to one end of an extrusion rod (38) via a compression spring; the other end of the extrusion rod (38) passes through the outer surface of the movable rod (28); a convex plate (40) is fixedly provided at one end of the extrusion rod (38) close to the cutting knife (29) and facing the wedge block (37); and an extrusion assembly for controlling the extrusion rod (38) to retract into the telescopic cavity (35) is provided on the annular fixing plate (5).

2. A PE pipe production slitting device according to claim 1, characterized in that: The extrusion assembly comprises a fixing ring (33) and extrusion protrusions (34). The fixing ring (33) is installed inside the annular fixing plate (5) via a mounting plate. The fixing ring (33) and the annular fixing plate (5) are coaxially arranged. A plurality of groups of extrusion protrusions (34) are fixedly arranged on a surface of the fixing ring (33) facing the extrusion rod (38). When the first annular rotating plate (6) drives the extrusion rod (38) to rotate, the extrusion rod (38) passes through the extrusion protrusions (34) on the surface of the fixing ring (33) in sequence.

3. A PE pipe production slitting device according to claim 2, characterized in that: One end of the movable rod (28) facing the tube body (3) is movably provided with a roller (36) through a mounting plate; when the movable rod (28) rotates, the curved surface of the roller (36) rolls around the outer surface of the tube body (3).

4. A PE pipe production slitting device according to claim 3, characterized in that: The annular fixed plate (5) is provided with a movable plug rod (41) for positioning the first annular rotating plate (6); the movable plug rod (41) is movably inserted on the annular fixed plate (5); and a plug hole (42) for interlocking with the movable plug rod (41) is provided on a side of the first annular rotating plate (6) facing the annular fixed plate (5).

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