Magnetic connection of elbow production mold and elbow with inner liner

Abstract

The utility model discloses a kind of elbow production mould of magnetic connection and elbow with inner liner, belong to pipeline production technical field, mould includes mould shell, first mould cover and second mould cover, mould cover is placed in pipe body, first mould cover and second mould cover are fixed at the both ends of pipe body.Mould shell includes first module, second module, third module, fourth module and fifth module, first module and second module are respectively located at the both ends of pipe body, first module extends pipe body, second module and second mould cover sealing connection, third module, fourth module and fifth module are located at the intermediate position of pipe body, fifth module is between third module and fourth module, third module, fourth module and fifth module are magnetically attracted and connected, third module, fourth module and fifth module are magnetically attracted and connected with first module and second module.The utility model provides a kind of elbow production mould of magnetic connection, dismounting is convenient, the manufacturing process of mould is simple, and moulding is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of pipe manufacturing technology, and in particular to a magnetically connected pipe bending production mold and a pipe bending with an inner lining. Background Technology

[0002] Pipelines are tubular structures used to transport fluids or powdery or granular materials. Bends are an indispensable component in pipeline construction, changing the direction of the pipeline to redirect fluid transport and playing a vital role in various fields. Due to the special properties of certain transported materials, the inner wall of the pipeline needs to be covered with a wear-resistant layer as a lining. This lining is formed by casting material into a mold inside the pipeline.

[0003] Traditional pipe bending production dies typically use bolted connections, which are cumbersome, time-consuming, and labor-intensive to assemble and disassemble. Furthermore, bolted connections are often difficult to implement when the bending radius or diameter of the pipe is too large. Moreover, bolted connections are prone to rusting and loosening, affecting the accuracy and lifespan of the pipe bending die. While existing technologies have begun to use magnetic connections, these designs suffer from insufficient magnetic force and inaccurate positioning. Utility Model Content

[0004] The present invention aims to provide a magnetically connected bending pipe production mold and a bending pipe with an inner liner, which achieves accurate positioning and convenient disassembly of the bending pipe inner liner mold through magnetic connection.

[0005] To achieve the above objectives, the present invention provides a magnetically connected bending pipe production mold, comprising a mold core, wherein the mold core includes a first module, a second module, a third module, a fourth module, and a fifth module. The first module and the second module are respectively located at both ends of the bending pipe body, with one end of the first module extending out of the pipe body. The third module, the fourth module, and the fifth module are located in the middle of the pipe body, with the fifth module located between the third module and the fourth module. The third module, the fourth module, and the fifth module are magnetically connected, and the third module, the fourth module, and the fifth module are magnetically connected to the first module and the second module.

[0006] In a preferred embodiment of the present invention, the mold core further includes a mounting hole, which is formed on at least one mating surface where the first module, the second module, the third module, the fourth module, and the fifth module are interconnected, and a mounting magnet is embedded in the mounting hole.

[0007] In a preferred embodiment of this utility model, the mounting holes and magnets located on the corresponding two mating surfaces form a male-female tenon structure.

[0008] In a preferred embodiment of this invention, the magnet is fixed in the mounting hole by bolts.

[0009] In a preferred embodiment of this utility model, the mold core is a combination of an arc-shaped tube and two straight tubes, with the two ends of the arc-shaped tube connected to the straight tubes respectively. The structure of the first module and the second module is a straight tube and a partial arc-shaped tube. The partial arc-shaped tubes of the first module and the partial arc-shaped tubes of the second module are arranged facing each other. The partial arc-shaped tubes of the first module and the partial arc-shaped tubes of the second module are connected to the outside of the bending direction of the third module, the fourth module and the fifth module, together forming a complete arc-shaped tube.

[0010] In a preferred embodiment of this utility model, the straight pipe portions of the first module and the second module are drawn towards the pipe opening.

[0011] In a preferred embodiment of the present invention, the mold liner further includes a sealing groove, which is formed on one of the mating surfaces where the first module, the second module, the third module, the fourth module, and the fifth module are interconnected, and a sealing strip is embedded in the sealing groove.

[0012] In a preferred embodiment of the present invention, a second mold cover is further included, which is fixed on the second flange at the end of the bend and is sealed to the second module.

[0013] In a preferred embodiment of the present invention, a first mold cover is further included, which is fixed on a first flange at the end of the bent pipe, and a gap is provided between the first mold cover and the first module.

[0014] This utility model also provides a bent pipe with an inner lining. The two ends of the bent pipe are respectively provided with a first flange and a second flange. The bent pipe is provided with a bent pipe production mold with magnetic connection as described above. The mold core is placed inside the bent pipe. The first mold cover and the second mold cover are fixedly connected to the first flange and the second flange respectively. The second mold cover is sealed to the end of the mold core. Material is poured between the mold core and the inner wall of the bent pipe body, and after curing, an inner lining is formed.

[0015] This utility model provides a magnetically connected bending pipe production mold. The magnetic connection of each module's mating surface enables convenient assembly and disassembly. Furthermore, the magnetic connection reduces potential losses during mold assembly. The mold's manufacturing process is simple and easy to industrialize. Each module's mating surface is equipped with a magnet for positioning, resulting in more accurate mold closing.

[0016] To make the above-mentioned features and advantages of the utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembly of the bend and mold of this utility model.

[0018] Figure 2 for Figure 1 Exploded view of the pipe bending and mold of this utility model.

[0019] Figure 3 This is a schematic diagram of the mold structure of this utility model.

[0020] Figure 4 for Figure 3 Another perspective view of the mold of this utility model.

[0021] 1-Bend; 11-Pipe body; 12-Inner liner; 13-First flange; 14-Second flange; 2-Mold; 21-Mold core; 211-First module; 212-Second module; 213-Third module; 214-Fourth module; 215-Fifth module; 216-Sealing groove; 217-Mounting hole; 22-First mold cover; 23-Second mold cover.

[0022] In the accompanying drawings, similar reference numerals refer to the same elements. Detailed Implementation

[0023] To make the objectives and technical solutions of the present utility model embodiments clearer, the following will be described in conjunction with the accompanying drawings of the present utility model embodiments. Figure 1 - Appendix Figure 4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] like Figure 1As shown, the bend 1 includes a pipe body 11, an inner liner 12, a first flange 13, and a second flange 14. The pipe body 11 can be made of pre-welded carbon steel or other materials that can be cast using a pipe body mold. The inner liner 12 covers the inner wall of the pipe body 11. The material of the inner liner 12 is a non-metallic thermoplastic molding material, such as thermoplastic polyurethane. Non-metallic thermoplastic molding materials soften and flow when heated and solidify after cooling. Therefore, in some cases involving the material of the pipe body 11, it cannot be directly covered on the inner wall of the pipe body 11 before welding or during casting. Otherwise, the heat during the manufacturing of the pipe body 11 will cause the inner liner 12 to soften and flow, resulting in the inner liner 12 falling off or becoming uneven. The first flange 13 and the second flange 14 are fixed to both ends of the pipe body 11, respectively. The first flange 13 and the second flange 14 are used to connect the bend 1 to other pipe bodies.

[0025] A magnetically connected pipe bending production mold 2 is used to produce the inner liner 12. The mold 2 is placed in the pipe body 11, and the material is poured into the gap between the pipe body 11 and the mold 2. After the material solidifies, the inner liner 12 is formed.

[0026] Please combine Figure 1 and Figure 2 The mold 2 includes a mold core 21, a first mold cover 22, and a second mold cover 23. The mold core 21 is placed inside the tube body 11. Both ends of the mold core 21 are pulled out towards the tube opening, with a specific pull-out angle of 0.5° to facilitate demolding. One end of the mold core 21 extends out of the first flange 13, and the first mold cover 22 is fixed to the first flange 13. The other end of the mold core 21 is sealed to the second mold cover 23, which is fixed to the second flange 14. Material is poured from the end where the mold core 21 and the first mold cover 22 are connected. The material enters through the gap between the mold core 21 and the tube body 11, and after solidification, it forms the inner lining 12.

[0027] The mold core 21 can be made of magnetic or non-magnetic materials. The mold core 21 is a structure consisting of an arc-shaped tube and two straight tubes. The two ends of the arc-shaped tube are respectively connected to the straight tubes. The mold core 21 includes a first module 211, a second module 212, a third module 213, a fourth module 214, a fifth module 215, a sealing groove 216, and a mounting hole 217. The first module 211 and the second module 212 are located at opposite ends of the tube 11. One end of each module is connected to the third module 213, the fourth module 214, and the fifth module 215. The other end of the first module 211 extends out of the tube 11, and the other end of the second module 212 is sealed to the second mold cover 23. The third module 213, the fourth module 214, and the fifth module 215 are located in the middle of the tube, with the fifth module 215 positioned between the third module 213 and the fourth module 214. The first module 211, the second module 212, the third module 213, the fourth module 214, and the fifth module 215 are magnetically connected. A sealing groove 216 is formed on one of the mating surfaces where the first module 211, the second module 212, the third module 213, the fourth module 214, and the fifth module 215 connect. A sealing strip is embedded in the sealing groove 216 to ensure a tight connection between the modules and prevent material leakage during pouring. The mounting hole 217 is formed on at least one mating surface where the first module 211, the second module 212, the third module 213, the fourth module 214 and the fifth module 215 are interconnected. The mounting hole 217 is embedded with a magnet for magnetically connecting the modules and accurately positioning them.

[0028] Specifically, the mold core 21 is a structure combining a bent pipe and two straight pipes. The structure of the first module 211 and the second module 212 is a straight pipe and a partially curved pipe. The partially curved pipes of the first module 211 and the partially curved pipes of the second module 212 are arranged facing each other. The partially curved pipes of the first module 211 and the partially curved pipes of the second module 212 are connected to the outside of the bending direction of the third module 213, the fourth module 214 and the fifth module 215, together forming a complete curved pipe.

[0029] Please combine Figure 2 , Figure 3 and Figure 4 In one specific embodiment, the mold core 21 is as follows: Figure 3From this perspective, the mold 21 can be considered as consisting of two isosceles trapezoids and a fan ring. The upper bases of the two isosceles trapezoids share a common side with the fan ring. The midpoints of the common sides of the two isosceles trapezoids and the fan ring are set as points A and B, respectively. The vertices of the isosceles trapezoids closest to the center of the fan ring are set as points C and D, respectively. The center of the fan ring is set as O, and the midpoint of the long arc of the fan ring is set as point E. Connect OE. Extend the perpendicular bisectors of the two isosceles trapezoids to intersect the radius line OE of the fan ring, and set the intersection point as point P.

[0030] The CAP, DBP, and PE segments divide the mold core 21 into three main sections. The straight tube and part of the curved tube cut by the CAP and PE segments constitute the first module 211. The straight tube and part of the curved tube cut by the DBP and PE segments constitute the second module 212. The remaining curved tube section constitutes the third module 213, the fourth module 214, and the fifth module 215.

[0031] Specifically, the end of the first module 211 near the first flange 13 extends out of the pipe body 11, and the end of the second module 212 near the second flange 14 is sealed to the second mold cover 23.

[0032] The mold bladder 21 is as follows Figure 4 As shown, the connection line between the arc-shaped tube and the straight tube is divided into three equal parts. The arc-shaped tube is cut into three parts along the horizontal direction. The two sides are the third module 213 and the fourth module 214, respectively, and the middle part is the fifth module 215. The third module 213 and the fourth module 214 have the same shape and structure.

[0033] Multiple sealing grooves 216 are formed on the mating surfaces of the first module 211, the second module 212 and other modules, as well as on the mating surfaces of the third module 213, the fourth module 214 and the fifth module 215. Mounting holes 217 are formed at the center of the mating surface corresponding to the location of each sealing groove 216, and on all mating surfaces of the fifth module 215. Magnets are mounted within the mounting holes 217.

[0034] Specifically, the mounting hole 217 can be used to embed only a magnet. The magnet selected for mounting the hole 217 is a high-temperature resistant magnet. Alternatively, the magnet can be fixed in the mounting hole 217 by bolts. In this embodiment, the cross-section of the mounting hole 217 can be T-shaped. For example, the magnet can be a circle with a hole in the middle. The bolt passes through the hole in the middle to fix the magnet in the mounting hole 217.

[0035] Furthermore, when the mold core 21 is made of a magnetic material, only one mounting hole 217 can be formed on the two corresponding mating surfaces. In another embodiment, regardless of whether the material of the mold core 21 is magnetic or non-magnetic, the mounting hole 217 can be formed on both corresponding mating surfaces. The depth of the mounting hole 217 on the two corresponding mating surfaces can be the same. For example, if magnets of the same thickness are used, the depth of the mounting hole 217 is the same as the thickness of the magnet, so that the surface of the magnet is flush with the mating surface; or magnets of different thicknesses are used, so that the magnet on one mating surface is recessed in the mounting hole 217, and the magnet on the other mating surface protrudes from the mating surface. The mounting hole 217 and the magnet on the two mating surfaces form a tenon-and-mortise structure, which cooperates and positions itself after magnetic attraction. The depths of the mounting holes 217 on the two corresponding mating surfaces can also be different. Magnets of the same or different thicknesses can be used to form a tenon-and-mortise structure between the mounting holes 217 and the magnets on the two mating surfaces. After magnetic attraction, they cooperate to position each other. For example, if the magnet thickness is 10mm, the depths of the mounting holes 217 on the two corresponding mating surfaces are 5.5mm and 15mm respectively. The 4.5mm protrusion of the magnet installed in the 5.5mm mounting hole 217 cooperates with the 5mm concavity of the magnet installed in the 15mm mounting hole 217, which serves as a positioning function.

[0036] The specific usage of the mold 2 is as follows: Before casting, the second module 212 is placed inside the tube body 11, and the second module 212 is sealed and connected to the second mold cover 23. The second mold cover 23 is fixed to the second flange 14. The third module 213, the fourth module 214, and the fifth module 215 are magnetically connected to the second module 212. Finally, the first module 211 is placed inside the tube body 11, so that the first module 211 is magnetically connected to the third module 213, the fourth module 214, and the fifth module 215. The first mold cover 22 is installed on the first flange 13. Material is poured between the first module 211 and the first mold cover 22, and after the material solidifies, the inner lining 12 is formed. When removing the mold liner 21, the first mold cover 22 and the second mold cover 23 are removed first, and then the first module 211 and the second module 212 are removed first against the magnetic force. Then, the fifth module 215, the third module 213, and the fourth module 214 are removed in sequence.

[0037] Specifically, when installing the mold 21 before casting, there is no requirement for the installation order of the third module 213, the fourth module 214 and the fifth module 215. However, when removing the mold 21, the fifth module 215 must be removed first, followed by the third module 213 and the fourth module 214.

[0038] The mold 2 can also be used in conjunction with the mold for making the tube 11 to produce the tube 11.

[0039] In summary, the magnetically connected pipe bending production mold provided by this utility model achieves convenient assembly and disassembly through the magnetic connection of the mating surfaces of each module; and the magnetic connection reduces the potential wear and tear during the assembly process; the mold manufacturing process is simple and easy to achieve industrial production; each module's mating surface is equipped with a magnet for positioning, making mold closing more accurate.

[0040] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A magnetically connected pipe bending production mold, characterized in that, The device includes a mold core, comprising a first module, a second module, a third module, a fourth module, and a fifth module. The first module and the second module are located at opposite ends of the tube body of the bend, with one end of the first module extending out of the tube body. The third module, the fourth module, and the fifth module are located in the middle of the tube body, with the fifth module positioned between the third module and the fourth module. The third module, the fourth module, and the fifth module are magnetically connected, and the third module, the fourth module, and the fifth module are magnetically connected to the first module and the second module.

2. The magnetically connected pipe bending production mold as described in claim 1, characterized in that, The mold also includes mounting holes, which are formed on at least one mating surface where the first module, the second module, the third module, the fourth module, and the fifth module are interconnected, and mounting magnets are embedded in the mounting holes.

3. The magnetically connected pipe bending production mold as described in claim 2, characterized in that, The mounting holes and magnets located on the corresponding two mating surfaces form a male-female tenon structure.

4. The magnetically connected pipe bending production mold as described in claim 2, characterized in that, The magnet is secured in the mounting hole by bolts.

5. The magnetically connected pipe bending production mold as described in claim 2, characterized in that, The mold core is a combination of an arc-shaped tube and two straight tubes. The two ends of the arc-shaped tube are respectively connected to the straight tubes. The structure of the first module and the second module is a straight tube and a part of the arc-shaped tube. The part of the arc-shaped tube of the first module and the part of the arc-shaped tube of the second module are arranged facing each other. The part of the arc-shaped tube of the first module and the part of the arc-shaped tube of the second module are connected to the outside of the bending direction of the third module, the fourth module and the fifth module, and together form a complete arc-shaped tube.

6. The magnetically connected pipe bending production mold as described in claim 5, characterized in that, The straight pipe sections of the first module and the second module are drawn towards the pipe opening.

7. The magnetically connected pipe bending production mold as described in claim 2, characterized in that, The mold also includes a sealing groove, which is formed on one of the mating surfaces where the first module, the second module, the third module, the fourth module and the fifth module are connected. A sealing strip is embedded in the sealing groove.

8. The magnetically connected pipe bending production mold as described in claim 1, characterized in that, It also includes a second mold cover, which is fixed to the second flange at the end of the bend and is sealed to the second module.

9. A magnetically connected pipe bending production mold as described in claim 8, characterized in that, It also includes a first mold cover, which is fixed to a first flange at the end of the bend, and there is a gap between the first mold cover and the first module.

10. A lined elbow, wherein a first flange and a second flange are respectively provided at both ends of the elbow, characterized in that, The bent pipe is provided with a bent pipe production mold with magnetic connection as described in any one of claims 1-9. The mold core is placed inside the bent pipe. The first mold cover and the second mold cover are fixedly connected to the first flange and the second flange, respectively. The second mold cover is sealed to the end of the mold core. Material is poured between the mold core and the inner wall of the bent pipe body and forms an inner lining after curing.

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