A PE pipe and its production equipment

Abstract

The present invention discloses a PE pipe, comprising a pipe body and reinforcing lines; the reinforcing lines are arranged as at least two, each reinforcing line is arranged on the surface of the pipe body along the spiral of the pipe body, each reinforcing line comprises a bottom connecting layer, an outer connecting layer, a first supporting bar, a second supporting bar and a reinforcing bar, the bottom connecting layer is fixed on the pipe body, the outer connecting layer is connected to the bottom connecting layer, a cavity is formed between the outer connecting layer and the bottom connecting layer, the first supporting bar is arranged in the cavity, one end of the first supporting bar is fixed on the bottom connecting layer, the other end of the first supporting bar is fixed on an inner wall of the outer connecting layer, one end of the second supporting bar is fixed on the bottom connecting layer, the other end of the second supporting bar is fixed on another inner wall of the outer connecting layer, one end of the reinforcing bar is fixedly connected to the middle of the first supporting bar, and the other end of the reinforcing bar is fixedly connected to the middle of the second supporting bar. The present invention also discloses a production device for PE pipes. The present application enhances the strength of the PE pipe by arranging a plurality of reinforcing lines on the surface of the pipe body, so that the PE pipe is not easy to break.

Description

Technical Field

[0001] The present invention relates to the technical field of pipes, and in particular to a PE pipe and production equipment thereof. Background Art

[0002] PE is the abbreviation of polyethylene. PE has excellent resistance to most domestic and industrial chemicals. Due to its unique advantages, PE pipes are widely used in building water supply, building drainage, buried drainage pipes, building heating, gas transmission and distribution, gas transmission pipes, electrical and telecommunications protective casings, industrial pipes, agricultural pipes, etc. It is mainly used in urban water supply, urban gas supply and farmland irrigation.

[0003] The PE pipe in the prior art generally has a simple structure and low strength. When the PE pipe is in use, it is easy to deform or even break when subjected to strong external force, thereby reducing the service life of the PE pipe. Summary of the invention

[0004] Based on the above problems existing in the prior art, an object of an embodiment of the present application is to provide a PE pipe, which enhances the strength of the PE pipe by providing a plurality of reinforcing grooves on the surface of the pipe body, so that the PE pipe is not easy to break.

[0005] Another purpose of an embodiment of the present application is to provide a PE pipe production device, which can quickly form multiple reinforcement lines on the pipe body when producing PE pipes.

[0006] The technical solution adopted by the present application to solve the technical problem is: a PE pipe, including a pipe body and a reinforcement pattern;

[0007] The reinforcement lines are arranged to be at least two, each of which is spirally arranged on the surface of the tube body along the tube body, and each of the reinforcement lines comprises a bottom connecting layer, an outer connecting layer, a first support bar, a second support bar and a reinforcement bar, the bottom connecting layer is fixed on the tube body, the outer connecting layer is connected to the bottom connecting layer, the outer surface of the outer connecting layer is in an arc shape, a cavity is formed between the outer connecting layer and the bottom connecting layer, the first support bar is arranged in the cavity, one end of the first support bar is fixed on the bottom connecting layer, the other end of the first support bar is fixed on an inner wall of the outer connecting layer, one end of the second support bar is fixed on the bottom connecting layer, the other end of the second support bar is fixed on the other inner wall of the outer connecting layer, one end of the reinforcement bar is fixedly connected to the middle of the first support bar, and the other end of the reinforcement bar is fixedly connected to the middle of the second support bar.

[0008] Furthermore, the reinforcement lines are arranged in three numbers, and the three reinforcement lines are evenly spirally arranged on the surface of the tube body along the tube body.

[0009] Furthermore, the longitudinal sections of the first support bar and the second support bar are distributed in an inverted figure eight shape.

[0010] Furthermore, a connection area between the bottom of the first support bar and the bottom connection layer is larger than a connection area between the top of the first support bar and the outer connection layer.

[0011] Furthermore, a connection area between the bottom of the second support bar and the bottom connection layer is larger than a connection area between the top of the second support bar and the outer connection layer.

[0012] The technical solution adopted by the present application to solve its technical problems is: a PE pipe production equipment, including an equipment main body; the equipment main body includes an extruder and an extrusion head connected to the extruder, the extrusion head includes a tube body forming mold and a reinforcement pattern forming mold, the tube body forming mold assists in tube body forming, and the reinforcement pattern forming mold assists in forming the reinforcement pattern on the tube body.

[0013] Furthermore, the tube body forming mold includes a forming cylinder and a mold column arranged in the forming cylinder, a feed port is arranged on the forming cylinder, a forming cavity is formed between the mold column and the forming cylinder, and the forming cavity is connected to the feed port.

[0014] Further, the reinforcement pattern forming mold includes a forming mold rod, which is arranged on the outer surface of the forming cylinder and can rotate along the outer surface of the forming cylinder, and an extrusion cavity is formed in the forming mold rod, and a left molding rod, an upper molding rod, a lower molding rod and a right molding rod are arranged in the extrusion cavity; an outer forming cavity is arranged between the left molding rod, the upper molding rod, the right molding rod and the upper inner wall of the molding mold rod; a bottom forming cavity is arranged between the left molding rod, the lower molding rod, the right molding rod and the lower inner wall of the molding mold rod; a first forming cavity is formed between the left molding rod, the upper molding rod and the lower molding rod; a second forming cavity is formed between the right molding rod, the upper molding rod and the lower molding rod, and a reinforcement strip forming cavity is arranged between the upper molding rod and the lower molding rod.

[0015] Furthermore, the ends of the left shaping rod, the upper shaping rod, the lower shaping rod and the right shaping rod are fixed on the cavity wall of the extrusion cavity through connecting blocks.

[0016] Furthermore, the forming mold rod includes a connecting section and an arc surface section, the connecting section is fixedly connected to the arc surface section, a limiting step is formed between the arc surface section and the connecting section and abuts against the end of the forming cylinder, and the inner side of the arc surface section has an arc surface that can fit the outer surface of the forming cylinder.

[0017] Furthermore, the number of the forming mold rods is three, and the arc surface segments of the three forming mold rods are evenly distributed on the outer surface of the forming cylinder.

[0018] Furthermore, the connecting section is connected to a feed barrel, a feed chamber is formed in the feed barrel, and a feed port communicating with the feed chamber is arranged on the feed barrel.

[0019] Furthermore, it also includes a rotating mechanism for driving the forming mold rod to rotate, the rotating mechanism includes a rotating plate and a driving motor, the rotating plate is connected to the feeding barrel, and the driving motor drives the rotating plate to rotate.

[0020] Furthermore, the feed barrel includes a barrel body and a mounting plate connected to the barrel body, and a mounting rod is arranged on the mounting plate; a through hole for the mounting rod to pass through is arranged on the rotating plate, and the mounting rod is locked on the rotating plate by a nut after passing through the through hole.

[0021] Furthermore, the rotating plate includes a front rotating plate and a rear rotating plate, the front rotating plate is provided with a connecting column, the rear rotating plate is provided with a connecting hole matching with the connecting column, and the connecting column passes through the connecting hole and is locked on the rear rotating plate by a nut.

[0022] Furthermore, a front nut and a rear nut are arranged on the connecting column, the front nut is arranged on one side of the rear rotating plate, and the rear nut is arranged on the other side of the rear rotating plate.

[0023] Further, the perforations include a first strip-shaped perforation and a second strip-shaped perforation, the first strip-shaped perforation is arranged on the front rotating plate, the second strip-shaped perforation is arranged on the rear rotating plate, the first strip-shaped perforation and the second strip-shaped perforation are both arranged in three, each first strip-shaped perforation is arranged opposite to a second strip-shaped perforation, so that the mounting rod can move along the first strip-shaped perforation and the second strip-shaped perforation; and also include an adjustment mechanism for driving multiple forming mold rods to approach or move away from each other, the adjustment mechanism includes an adjustment plate, the adjustment plate is arranged between the front rotating plate and the rear rotating plate, the adjustment plate is provided with an arc-shaped force-applying hole for the mounting rod to pass through, the adjustment plate rotates to drive the mounting rod to move along the first strip-shaped perforation and the second strip-shaped perforation through the arc-shaped force-applying hole.

[0024] Furthermore, a sliding block is arranged at the bottom of the mounting plate, and a sliding groove for the sliding block to move is arranged on the front rotating plate.

[0025] Furthermore, two sliding blocks are arranged at the bottom of each mounting plate, a sliding groove is arranged on one side of the first strip-shaped through hole, and another sliding groove is arranged on the other side of the first strip-shaped through hole.

[0026] Furthermore, the adjustment mechanism also includes a driving rod, which is arranged in the middle of the adjustment plate; and a clearance opening for the driving rod to pass through is arranged on the rear rotating plate.

[0027] Furthermore, a limiting ring is provided on the driving rod and abuts against one side of the rear rotating plate, and the end of the driving rod is connected to a locking nut, and the locking nut is located on the other side of the rear rotating plate.

[0028] Furthermore, a locking hole is arranged on the side of the locking nut, and a tightening bolt is arranged on the locking hole.

[0029] Furthermore, the positioning mechanism between the locking nut and the rear rotating plate includes a mounting groove, a spring, a positioning bullet and a positioning groove, the mounting groove is arranged on the locking nut, one end of the spring is arranged in the mounting groove, the positioning bullet is arranged at the other end of the spring, the positioning bullet protrudes from the mounting groove, the positioning groove is arranged in plurality, and the plurality of positioning grooves are evenly distributed on the rear rotating plate, and each positioning groove can be inserted into the positioning bullet.

[0030] Furthermore, a first guide surface is provided at the notch of the positioning groove, and a second guide surface is provided on the positioning head.

[0031] Furthermore, it also includes a driving plate, which is fixed to the rear rotating plate through a plurality of connecting plates, and an operating cavity for operating the locking nut is formed between the driving plate and the rear rotating plate.

[0032] Furthermore, a column is arranged on the connecting plate, and a through hole for the column to pass through is arranged on the driving plate. After the column passes through the through hole, it is connected with the connecting nut.

[0033] Furthermore, the driving plate is connected to a driving motor and is driven to rotate by the driving motor.

[0034] The beneficial effects of the present application are: when the PE pipe is subjected to external forces such as pressure or impact force, the pressure or impact force acts on the surface of the reinforcing pattern, the first support strip effectively supports one side of the outer connecting layer, and the second support strip effectively supports the other side of the outer connecting layer, thereby increasing the force bearing capacity and compressive strength of the PE pipe, avoiding the occurrence of water leakage accidents caused by the PE pipe cracking under force, and improving the service life of the PE pipe. At the same time, because one end of the reinforcing strip is fixedly connected to the middle of the first support strip, and the other end of the reinforcing strip is fixedly connected to the middle of the second support strip, the first support strip and the second support strip are connected together, thereby increasing the strength of the first support strip and the second support strip, so that the first support strip and the second support strip are not easily damaged by bending.

[0035] When producing the PE pipe, a forming mold rod is provided, and the forming mold rod can rotate along the outer surface of the forming cylinder, thereby producing a reinforcing pattern spirally provided on the surface of the pipe body. The PE pipe production equipment of the prior art usually independently forms a ring-shaped reinforcing rib on the pipe body, and each reinforcing rib is independently formed on the pipe body. When producing different reinforcing ribs, interruptions are required, resulting in low production efficiency. Compared with the prior art, the PE pipe production equipment of the present application does not require interruptions when producing reinforcing patterns. By continuously rotating the forming mold rod, the reinforcing patterns can be continuously spirally formed on the pipe body, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure of the PE pipe in this application;

[0037] Figure 2 is a cross-sectional view of the PE pipe in this application;

[0038] Figure 3 It is a structural schematic diagram of the production equipment of PE pipe in this application;

[0039] Figure 4 This is a schematic diagram of the connection between the tube body forming mold and the reinforcement pattern forming mold in this application;

[0040] Figure 5 This is an exploded view of the reinforcement pattern forming mold in this application;

[0041] Figure 6 This is an exploded view of another angle of the reinforcement pattern forming mold in this application;

[0042] Figure 7 It is a structural schematic diagram of the forming mold rod in this application;

[0043] Figure 8 This is a schematic structural diagram of the forming mold rod in the present application from another angle;

[0044] Fig. 9 This is a schematic diagram of the connection between the locking nut and the positioning mechanism in this application.

[0045] Description of Reference Numerals

[0046] Tube body 1, reinforcement pattern 2, bottom connection layer 21, outer connection layer 22, first support bar 23, second support bar 24, reinforcement bar 25, cavity 26, extruder 3, extrusion head 4, tube body forming mold 41, forming cylinder 411, mold column 412, feed inlet 413, forming cavity 414, reinforcement pattern forming mold 42, forming mold rod 421, extrusion cavity 4211, left shaping rod 4212, upper shaping rod 4213, lower shaping rod 4214, right shaping rod 4215, connecting block 4216, connecting section 4217, arc section 4218, limiting step 4219, feeding Cylinder 422, feed chamber 4221, feed port 4222, cylinder body 4223, mounting plate 4224, mounting rod 4225, rotating mechanism 5, front rotating plate 51, connecting column 511, first strip through hole 512, rear rotating plate 52, connecting hole 521, second strip through hole 522, yielding port 523, adjusting mechanism 6, adjusting plate 61, arc-shaped force hole 611, driving rod 62, limiting ring 621, locking nut 63, tightening bolt 64, positioning mechanism 7, mounting groove 71, spring 72, positioning bullet 73, positioning groove 74, driving plate 8, connecting plate 81. DETAILED DESCRIPTION

[0047] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0048] like Figure 1 and Figure 2 As shown, a PE pipe of the present invention comprises a pipe body 1 and reinforcement lines 2; the reinforcement lines 2 are arranged as at least two, each reinforcement line 2 is spirally arranged on the surface of the pipe body 1 along the pipe body 1, each reinforcement line 2 comprises a bottom connecting layer 21, an outer connecting layer 22, a first support bar 23, a second support bar 24 and a reinforcement bar 25, the bottom connecting layer 21 is fixed on the pipe body 1, the outer connecting layer 22 is connected to the bottom connecting layer 21, the outer surface of the outer connecting layer 22 is in an arc shape, a cavity 26 is formed between the outer connecting layer 22 and the bottom connecting layer 21, the first support bar 23 is arranged in the cavity 26, one end of the first support bar 23 is fixed on the bottom connecting layer 21, the other end of the first support bar 23 is fixed on an inner wall of the outer connecting layer 22, one end of the second support bar 24 is fixed on the bottom connecting layer 21, the other end of the second support bar 24 is fixed on the other inner wall of the outer connecting layer 22, one end of the reinforcement bar 25 is fixedly connected to the middle of the first support bar 23, and the other end of the reinforcement bar 25 is fixedly connected to the middle of the second support bar 24.

[0049] In this way, the PE pipe of the present invention, when in use, when the PE pipe is subjected to external forces such as pressure or impact force, the pressure or impact force acts on the surface of the reinforcing pattern 2, the first support bar 23 effectively supports one side of the outer connecting layer 22, and the second support bar 24 effectively supports the other side of the outer connecting layer 22, thereby increasing the force bearing capacity and compressive strength of the PE pipe, avoiding the occurrence of water leakage accidents caused by the PE pipe cracking under force, and improving the service life of the PE pipe. At the same time, because one end of the reinforcing bar 25 is fixedly connected to the middle of the first support bar 23, and the other end of the reinforcing bar 25 is fixedly connected to the middle of the second support bar 24, the first support bar 23 and the second support bar 24 are connected together, thereby increasing the strength of the first support bar 23 and the second support bar 24, so that the first support bar 23 and the second support bar 24 are not easily damaged by bending.

[0050] Optionally, the reinforcement lines 2 are provided in three numbers, and the three reinforcement lines 2 are uniformly spirally provided on the surface of the tube body 1 along the tube body 1. By providing three reinforcement lines 2, the force bearing capacity and compressive strength of the PE tube are further increased. Meanwhile, during production, the three reinforcement lines 2 can be extruded synchronously, and the production efficiency is high.

[0051] Furthermore, the longitudinal sections of the first support bar 23 and the second support bar 24 are distributed in an inverted figure eight shape. When the PE pipe is subjected to pressure, such as when the PE pipe is covered by soil and subjected to pressure, when the soil squeezes the outer connecting layer 22, the end of the first support bar 23 and the end of the second support bar 24 can be connected together, thereby supporting each other and further improving the compressive strength of the PE pipe.

[0052] In a preferred embodiment of the present invention, the connection area between the bottom of the first support bar 23 and the bottom connecting layer 21 is larger than the connection area between the top of the first support bar 23 and the outer connecting layer 22. In this way, the longitudinal section of the first support bar 23 can be an isosceles trapezoid or a right-angled trapezoid as a whole, so that the connection area between the bottom of the first support bar 23 and the bottom connecting layer 21 is large, and the connection position between the bottom of the first support bar 23 and the bottom connecting layer 21 is not easy to break.

[0053] Similarly, the connection area between the bottom of the second support bar 24 and the bottom connecting layer 21 is also larger than the connection area between the top of the second support bar 24 and the outer connecting layer 22, so that the longitudinal section of the second support bar 24 can be an isosceles trapezoid or a right-angled trapezoid as a whole, so that the connection area between the bottom of the second support bar 24 and the bottom connecting layer 21 is large, and the connection position between the bottom of the second support bar 24 and the bottom connecting layer 21 is not easy to break.

[0054] like Figures 3 to 9 As shown, the present application also proposes a PE pipe production equipment, including an equipment main body; the equipment main body includes an extruder 3 and an extrusion head 4 connected to the extruder 3, the extrusion head 4 includes a tube body forming mold 41 and a reinforcement pattern forming mold 42, the tube body forming mold 41 assists in forming the tube body 1, and the reinforcement pattern forming mold 42 assists in forming the reinforcement pattern 2 on the tube body 1.

[0055] When producing the PE pipe, the pipe body forming die 41 extrude the pipe body 1 , and at the same time, the reinforcement pattern forming die 42 extrude the reinforcement pattern 2 , so that the reinforcement pattern 2 is formed on the outer surface of the pipe body 1 .

[0056] Furthermore, the tube body forming mold 41 includes a forming cylinder 411 and a mold column 412 disposed in the forming cylinder 411. A feed port 413 is disposed on the forming cylinder 411. A forming cavity 414 is formed between the mold column 412 and the forming cylinder 411. The forming cavity 414 is connected to the feed port 413. When in use, a material is input into the forming cylinder 411 through the feed port 413, and then the material is extruded along the forming cavity 414, thereby realizing extrusion to form the tube body 1.

[0057] In a preferred embodiment of the present invention, the reinforcement pattern forming mold 42 includes a forming mold rod 421, which is arranged on the outer surface of the forming cylinder 411 and can rotate along the outer surface of the forming cylinder 411. Figure 7As shown, an extrusion cavity 4211 is formed in the molding die rod 421, and a left molding rod 4212, an upper molding rod 4213, a lower molding rod 4214 and a right molding rod 4215 are arranged in the extrusion cavity 4211; an outer forming cavity is arranged between the left molding rod 4212, the upper molding rod 4213, the right molding rod 4215 and the upper inner wall of the molding die rod 421, and the material is extruded through the outer forming cavity to form the outer connecting layer 22 of the reinforcing pattern 2. A bottom forming cavity is arranged between the left molding rod 4212, the lower molding rod 4214, the right molding rod 4215 and the lower inner wall of the molding die rod 421, and the material is extruded through the bottom forming cavity to form the bottom connecting layer 21 of the reinforcing pattern 2.

[0058] A first forming cavity is formed between the left shaping rod 4212, the upper shaping rod 4213 and the lower shaping rod 4214, through which the material is extruded to form the first support strip 23 of the reinforcing pattern 2. A second forming cavity is formed between the right shaping rod 4215, the upper shaping rod 4213 and the lower shaping rod 4214, through which the material is extruded to form the second support strip 24 of the reinforcing pattern 2. A reinforcing strip forming cavity is provided between the upper shaping rod 4213 and the lower shaping rod 4214, through which the material is extruded to form the reinforcing strip 25 of the reinforcing pattern 2.

[0059] After the tube body 1 is extruded and formed, the molding die rod 421 rotates along the outer surface of the molding cylinder 411. After the material is injected into the extrusion cavity 4211, the extrusion cavity 4211 extrude the reinforcing pattern 2. Since the left molding rod 4212, the upper molding rod 4213, the lower molding rod 4214 and the right molding rod 4215 are arranged in the extrusion cavity 4211, the extruded reinforcing pattern 2 has a bottom connecting layer 21, an outer connecting layer 22, a first support bar 23, a second support bar 24 and a reinforcing bar 25, so as to produce a PE tube with high strength.

[0060] like Figure 8 As shown, further, the ends of the left molding rod 4212, the upper molding rod 4213, the lower molding rod 4214 and the right molding rod 4215 are fixed on the cavity wall of the extrusion cavity 4211 through the connecting block 4216, so that the left molding rod 4212, the upper molding rod 4213, the lower molding rod 4214 and the right molding rod 4215 are firmly fixed and connected in the extrusion cavity 4211.

[0061] In a preferred embodiment of the present invention, the molding mold rod 421 includes a connecting section 4217 and an arc surface section 4218. The connecting section 4217 is fixedly connected to the arc surface section 4218. A limiting step 4219 is formed between the arc surface section 4218 and the connecting section 4217, which abuts against the end of the molding tube 411. The inner side of the arc surface section 4218 has an arc surface that can fit the outer surface of the molding tube 411.

[0062] Since the inner side of the arc segment 4218 has an arc surface that can fit the outer surface of the molding tube 411, when the reinforcing pattern 2 is extruded, the distance between the reinforcing pattern 2 and the extruded tube body 1 is small, so that the reinforcing pattern 2 is easily formed on the tube body 1. At the same time, when the molding die rod 421 rotates, the arc surface rotates along the outer surface of the molding tube 411, so that the molding die rod 421 rotates more smoothly. When installing the molding die rod 421, the limiting step 4219 is pressed against the end of the molding tube 411, so that the molding die rod 421 is more convenient to install.

[0063] Furthermore, three forming mold rods 421 are provided, and the arc surface sections 4218 of the three forming mold rods 421 are evenly distributed on the outer surface of the forming cylinder 411. In this way, the three forming mold rods 421 can rotate simultaneously, further improving the production efficiency of the reinforcing pattern 2.

[0064] In this embodiment, the connecting section 4217 is connected to the feed barrel 422, a feed chamber 4221 is formed in the feed barrel 422, and a feed port 4222 connected to the feed chamber 4221 is provided on the feed barrel 422. When in use, the material is injected into the feed chamber 4221 through the feed port 4222, and then enters the molding chamber 414 through the feed chamber 4221, and finally extruded and molded by the molding chamber 414, wherein the connecting section 4217 can be connected to the feed barrel 422 by threads.

[0065] In a preferred embodiment of the present invention, a rotating mechanism 5 is further included to drive the forming mold rod 421 to rotate. The rotating mechanism 5 includes a rotating plate and a driving motor. The rotating plate is connected to the feeding barrel 422. The driving motor drives the rotating plate to rotate. When the reinforcing pattern 2 is formed, the driving motor drives the rotating plate to rotate. The rotation of the rotating plate drives the three forming mold rods 421 to rotate synchronously, thereby realizing the rotation of the three forming mold rods 421 along the surface of the forming barrel 411.

[0066] Specifically, the feed barrel 422 includes a barrel body 4223 and a mounting plate 4224 connected to the barrel body 4223, and a mounting rod 4225 is provided on the mounting plate 4224; a through hole is provided on the rotating plate for the mounting rod 4225 to pass through, and the mounting rod 4225 is locked on the rotating plate through a connecting nut after passing through the through hole. During installation, after the mounting rod 4225 passes through the through hole, the connecting nut is screwed on the end of the mounting rod 4225, thereby completing the installation of the feed barrel 422, and the installation is relatively convenient.

[0067] The rotating plate includes a front rotating plate 51 and a rear rotating plate 52. The front rotating plate 51 is provided with a connecting column 511, and the rear rotating plate 52 is provided with a connecting hole 521 that matches the connecting column 511. The connecting column 511 passes through the connecting hole 521 and is locked on the rear rotating plate 52 by a nut. Specifically, a front nut and a rear nut are provided on the connecting column 511, and the front nut is provided on one side of the rear rotating plate 52, and the rear nut is provided on the other side of the rear rotating plate 52.

[0068] When the front rotating plate 51 and the rear rotating plate 52 are locked, the front nut is first screwed onto the connecting column 511, and then the connecting column 511 is passed through the connecting hole 521, and finally the rear nut is screwed onto the connecting column 511, so that the front nut is set on one side of the rear rotating plate 52, and the rear nut is set on the other side of the rear rotating plate 52 to complete the installation of the front rotating plate 51 and the rear rotating plate 52. After the front rotating plate 51 and the rear rotating plate 52 are installed, there is a certain space between the front rotating plate 51 and the rear rotating plate 52, so that it is convenient to install the adjustment plate 61. By setting the front nut and the rear nut, the position of the front nut and the rear nut on the connecting column 511 can be adjusted, thereby adjusting the distance between the front rotating plate 51 and the rear rotating plate 52, so that the adjustment plate 61 is located at a suitable position between the front rotating plate 51 and the rear rotating plate 52.

[0069] Preferably, the perforations include a first strip perforation 512 and a second strip perforation 522, the first strip perforation 512 is arranged on the front rotating plate 51, and the second strip perforation 522 is arranged on the rear rotating plate 52, and the first strip perforation 512 and the second strip perforation 522 are both arranged in three, and each first strip perforation 512 is arranged opposite to a second strip perforation 522, so that the mounting rod 4225 can move along the first strip perforation 512 and the second strip perforation 522; it also includes an adjustment mechanism 6 for driving multiple molding mold rods 421 to approach or move away from each other, the adjustment mechanism 6 includes an adjustment plate 61, the adjustment plate 61 is arranged between the front rotating plate 51 and the rear rotating plate 52, and an arc-shaped force-applying hole 611 for the mounting rod 4225 to pass through is arranged on the adjustment plate 61, and the adjustment plate 61 rotates to drive the mounting rod 4225 to move along the first strip perforation 512 and the second strip perforation 522 through the arc-shaped force-applying hole 611.

[0070] By providing the first strip through hole 512 and the second strip through hole 522, the axial center line of the first strip through hole 512 points to the center of the front rotating plate 51, and the axial center line of the second strip through hole 522 points to the center of the rear rotating plate 52, and each second strip through hole 522 is located just behind a first strip through hole 512, so that the installation rod 4225 can move along the first strip through hole 512 and the second strip through hole 522. At the same time, due to the limiting effect of the first strip through hole 512 and the second strip through hole 522, the installation rod 4225 is stable when moving.

[0071] Furthermore, a slider is provided at the bottom of the mounting plate 4224, and a slide groove for the slider to move is provided on the front rotating plate 51. By providing the slider and the slide groove, when the feed barrel 422 moves, the slider slides along the slide groove, further improving the stability of the feed barrel 422 when it moves on the front rotating plate 51. Specifically, two sliders are provided at the bottom of each mounting plate 4224, one slide groove is provided on one side of the first strip-shaped through hole 512, and another slide groove is provided on the other side of the first strip-shaped through hole 512. The provision of two sliders and two slide grooves makes the feed barrel 422 more stable when it moves.

[0072] In a preferred embodiment of the present invention, the adjustment mechanism 6 further includes a driving rod 62, which is arranged in the middle of the adjustment plate 61; and a clearance opening 523 for the driving rod 62 to pass through is arranged on the rear rotating plate 52. By arranging the driving rod 62, during installation, the driving rod 62 is passed through the clearance opening 523, so that the end of the driving rod 62 protrudes from the rear rotating plate 52. At this time, it is very convenient to apply force to the driving rod 62, so that the adjustment plate 61 is driven to rotate through the driving rod 62, and the adjustment plate 61 rotates and applies force to the installation rod 4225 through the arc-shaped force-applying hole 611, so that the installation rod 4225 moves along the first strip through hole 512 and the second strip through hole 522, so that the feeding barrel 422 moves along the front rotating plate 51, so that the three molding mold rods 421 are close to or away from each other.

[0073] When in use, the forming cylinder 411 of different diameters can be replaced, so that PE pipes of different diameters can be produced. When a PE pipe of a smaller diameter needs to be produced, the original forming cylinder 411 is removed, and then a new smaller forming cylinder 411 is installed. At this time, the driving rod 62 can be rotated in the positive direction, so that the three forming mold rods 421 move along the first strip-shaped perforation 512 and the second strip-shaped perforation 522, so that the three forming mold rods 421 are close to each other until the arc surface sections 4218 of the three forming mold rods 421 abut against the outer surface of the new smaller forming cylinder 411, so as to produce a PE pipe of a smaller diameter.

[0074] When it is necessary to produce a PE pipe with a larger diameter, the original forming cylinder 411 is removed. At this time, the driving rod 62 can be rotated in the opposite direction to make the three forming mold rods 421 move along the first strip perforation 512 and the second strip perforation 522, so that the three forming mold rods 421 are moved away from each other, and then a new larger forming cylinder 411 is installed, and then the driving rod 62 is rotated in the positive direction until the arc surface segments 4218 of the three forming mold rods 421 abut against the outer surface of the new larger forming cylinder 411, thereby realizing the production of PE pipes with a larger diameter.

[0075] In this embodiment, a limiting ring 621 is provided on the driving rod 62, which abuts against one side of the rear rotating plate 52. The end of the driving rod 62 is connected to the locking nut 63, and the locking nut 63 is located on the other side of the rear rotating plate 52. When installing the driving rod 62, the driving rod 62 is passed through the yield opening 523 so that the limiting ring 621 abuts against one side of the rear rotating plate 52, and then the locking nut 63 is used to connect to the end of the driving rod 62. The end of the driving rod 62 has an external thread that cooperates with the locking nut 63. The locking nut 63 is rotated to achieve the locking nut 63 abutting against the other side of the rear rotating plate 52, thereby completing the installation of the driving rod 62.

[0076] When the positions of the three forming mold rods 421 need to be adjusted, the locking nut 63 is directly rotated, and the locking nut 63 rotates to drive the driving rod 62 to rotate synchronously, so as to realize the rotation of the adjustment plate 61 and adjust the positions of the three forming mold rods 421. A locking hole is set on the side of the locking nut 63, and a tightening bolt 64 is set on the locking hole. In this way, after the locking nut 63 abuts against the other side of the rear rotating plate 52 to complete the installation of the driving rod 62, the tightening bolt 64 is screwed into the locking hole, and the tightening bolt 64 is rotated so that the end of the tightening bolt 64 is tightly pressed against the driving rod 62, so that when the locking nut 63 is rotated, the locking nut 63 can ensure that the driving rod 62 can be driven to rotate synchronously without causing the locking nut 63 to be loosened.

[0077] In order to prevent the three forming mold rods 421 from loosening after adjusting their positions and affecting the forming of the reinforcement pattern 2, in this example, a positioning mechanism 7 is provided between the locking nut 63 and the rear rotating plate 52, and the positioning mechanism 7 includes a mounting groove 71, a spring 72, a positioning bullet 73 and a positioning groove 74. The mounting groove 71 is provided on the locking nut 63, one end of the spring 72 is provided in the mounting groove 71, the positioning bullet 73 is provided at the other end of the spring 72, the positioning bullet 73 protrudes from the mounting groove 71, and a plurality of positioning grooves 74 are provided, and the plurality of positioning grooves 74 are evenly distributed on the rear rotating plate 52, and each positioning groove 74 can be inserted into the positioning bullet 73.

[0078] During adjustment, the locking nut 63 is rotated so that the positioning bullet 73 moves from one of the positioning grooves 74 to another positioning groove 74 under the action of external force and the spring 72. After the adjustment is completed, the positioning bullet 73 is located in the positioning groove 74, so that the locking nut 63 will not rotate without the action of external force, and the adjustment plate 61 will not easily rotate without the action of external force, so that the three molding mold rods 421 are not easy to loosen.

[0079] In order to facilitate the positioning bullet 73 to move out of a positioning groove 74 under the action of external force, a first guide surface is set at the notch of the positioning groove 74, and a second guide surface is set on the positioning head. Under the action of external force, the first guide surface moves along the second guide surface to achieve the positioning bullet 73 moving out of the positioning groove 74.

[0080] In a preferred embodiment of the present invention, it also includes a driving plate 8, which is fixed to the rear rotating plate 52 by a plurality of connecting plates 81. An operating cavity for operating the locking nut 63 is formed between the driving plate 8 and the rear rotating plate 52. By setting the driving plate 8, after the driving plate 8 is fixed to the rear rotating plate 52 by the connecting plates 81, an operating cavity is formed between the driving plate 8 and the rear rotating plate 52. During adjustment, force can be applied to the locking nut 63 through the operating cavity, thereby realizing the rotation of the locking nut 63 and adjusting the positions of the three molding mold rods 421.

[0081] Furthermore, a column is provided on the connecting plate 81, and a through hole is provided on the driving plate 8 for the column to pass through. After the column passes through the through hole, it is connected with the connecting nut. By providing the column and the through hole, it is convenient to lock the driving plate 8 and the connecting plate 81 together. Among them, the driving plate 8 is connected to the driving motor and driven to rotate by the driving motor. When in use, the driving motor drives the driving plate 8 to rotate, and the rotation of the driving plate 8 drives the rear rotating plate 52 and the front rotating plate 51 to rotate, thereby driving the three molding die rods 421 to rotate synchronously, so as to extrude the reinforcement pattern 2.

[0082] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A PE pipe, characterized in that: Including tube body and reinforcement pattern; The reinforcement lines are arranged to be at least two, each of which is spirally arranged on the surface of the tube body along the tube body, and each of the reinforcement lines comprises a bottom connecting layer, an outer connecting layer, a first support bar, a second support bar and a reinforcement bar, the bottom connecting layer is fixed on the tube body, the outer connecting layer is connected to the bottom connecting layer, the outer surface of the outer connecting layer is in an arc shape, a cavity is formed between the outer connecting layer and the bottom connecting layer, the first support bar is arranged in the cavity, one end of the first support bar is fixed on the bottom connecting layer, the other end of the first support bar is fixed on an inner wall of the outer connecting layer, one end of the second support bar is fixed on the bottom connecting layer, the other end of the second support bar is fixed on the other inner wall of the outer connecting layer, one end of the reinforcement bar is fixedly connected to the middle of the first support bar, and the other end of the reinforcement bar is fixedly connected to the middle of the second support bar.

2. The PE pipe according to claim 1, characterized in that: The reinforcement lines are arranged in three lines, and the three reinforcement lines are evenly and spirally arranged on the surface of the tube body along the tube body.

3. The PE pipe according to claim 1, characterized in that: The longitudinal sections of the first support bar and the second support bar are distributed in an inverted figure eight shape.

4. The PE pipe according to claim 1, characterized in that: The connection area between the bottom of the first support bar and the bottom connection layer is larger than the connection area between the top of the first support bar and the outer connection layer; the connection area between the bottom of the second support bar and the bottom connection layer is larger than the connection area between the top of the second support bar and the outer connection layer.

5. A PE pipe production equipment, characterized in that: The invention comprises an equipment body; the equipment body comprises an extruder and an extrusion head connected to the extruder, the extrusion head comprises a tube body forming die and a reinforcement pattern forming die, the tube body forming die assists in tube body forming, the reinforcement pattern forming die assists in forming the reinforcement pattern on the tube body; the tube body forming die comprises a forming cylinder and a die column arranged in the forming cylinder, a feed port is arranged on the forming cylinder, a forming cavity is formed between the die column and the forming cylinder, and the forming cavity is connected to the feed port; the reinforcement pattern forming die comprises a forming die rod, the forming die rod is arranged on the outer surface of the forming cylinder and can be moved along the forming cylinder. The outer surface of the molding cylinder rotates, and an extrusion cavity is formed in the molding die rod, in which a left molding rod, an upper molding rod, a lower molding rod and a right molding rod are arranged; an outer forming cavity is arranged between the left molding rod, the upper molding rod, the right molding rod and the upper inner wall of the molding die rod; a bottom forming cavity is arranged between the left molding rod, the lower molding rod, the right molding rod and the lower inner wall of the molding die rod; a first forming cavity is formed between the left molding rod, the upper molding rod and the lower molding rod; a second forming cavity is formed between the right molding rod, the upper molding rod and the lower molding rod, and a reinforcing strip forming cavity is arranged between the upper molding rod and the lower molding rod.

6. The PE pipe production equipment according to claim 5, characterized in that: The forming mold rod includes a connecting section and an arc surface section, the connecting section is fixedly connected to the arc surface section, a limiting step is formed between the arc surface section and the connecting section and abuts against the end of the forming cylinder, and the inner side of the arc surface section has an arc surface that can fit the outer surface of the forming cylinder.

7. The PE pipe production equipment according to claim 6, characterized in that: The number of the forming die rods is three, and the arc surface sections of the three forming die rods are evenly distributed on the outer surface of the forming cylinder.

8. The PE pipe production equipment according to claim 5, characterized in that: It also includes a rotating mechanism for driving the forming mold rod to rotate, the rotating mechanism includes a rotating plate and a driving motor, the rotating plate is connected to the feed barrel, and the driving motor drives the rotating plate to rotate; the feed barrel includes a barrel body and a mounting plate connected to the barrel body, and a mounting rod is arranged on the mounting plate; a through hole for the mounting rod to pass through is arranged on the rotating plate, and the mounting rod is locked on the rotating plate by a nut after passing through the through hole.

9. The PE pipe production equipment according to claim 8, characterized in that: The rotating plate comprises a front rotating plate and a rear rotating plate, the front rotating plate is provided with a connecting column, the rear rotating plate is provided with a connecting hole that cooperates with the connecting column, and the connecting column is locked on the rear rotating plate by a nut after passing through the connecting hole; the perforation comprises a first strip perforation and a second strip perforation, the first strip perforation is arranged on the front rotating plate, and the second strip perforation is arranged on the rear rotating plate, and the first strip perforation and the second strip perforation are both arranged in three. Each first strip perforation is arranged opposite to a second strip perforation, so that the mounting rod can move along the first strip perforation and the second strip perforation; it also includes an adjustment mechanism that drives multiple forming mold rods to approach or move away from each other, the adjustment mechanism comprises an adjustment plate, the adjustment plate is arranged between the front rotating plate and the rear rotating plate, the adjustment plate is provided with an arc-shaped force-applying hole for the mounting rod to pass through, and the adjustment plate rotates to drive the mounting rod to move along the first strip perforation and the second strip perforation through the arc-shaped force-applying hole.

10. The PE pipe production equipment according to claim 9, characterized in that: The adjusting mechanism also includes a driving rod, which is arranged in the middle of the adjusting plate; a clearance opening for the driving rod to pass through is arranged on the rear rotating plate; a limiting ring is arranged on the driving rod, which abuts against one side of the rear rotating plate, and the end of the driving rod is connected to a locking nut, and the locking nut is located on the other side of the rear rotating plate; a positioning mechanism between the locking nut and the rear rotating plate, the positioning mechanism includes an installation groove, a spring, a positioning bullet and a positioning groove, the installation groove is arranged on the locking nut, one end of the spring is arranged in the installation groove, the positioning bullet is arranged at the other end of the spring, and the positioning bullet protrudes from the installation groove, and the positioning groove is arranged in plurality, and the plurality of positioning grooves are evenly distributed on the rear rotating plate, and each positioning groove can be inserted into the positioning bullet.

Images