Pipe die for manufacturing nodular cast iron pipe
By setting up feeding ports at the top of the connecting ring of the ductile iron pipe mold and setting up a connecting ring between each two pipe mold main body, combined with the use of heating arc plates and electric heating wires, the temperature reduction problem caused by the excessively long flow path of the iron is solved, and the quality and efficiency of pipe fitting production are improved.
Patent Information
- Application Number
- CN202422216788.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-10
AI Technical Summary
During the production process of ductile iron pipes, when multiple pipe fittings are molded, the molten iron flows step by step in the pipe mold, and the flow path is long, resulting in a decrease in temperature, making it difficult to flow from the molten iron, and it is impossible to fill all pipe molds, affecting the quality of pipe fitting production.
A pipe mold for manufacturing ductile iron pipes is designed. By setting a feeding port at the top of the connecting ring, the raw material flows into the pipe mold main body on both sides. A connecting ring is arranged between each two pipe mold main body to avoid excessive flow path of the raw material, and the pipe mold main body is heated by heating arc plates and electric heating wires to prevent the raw material from solidifying in advance.
It effectively avoids the temperature reduction problem caused by excessive flow path of raw materials, improves the fluidity of molten iron, enables all pipe molds to be fully filled, and improves the quality and efficiency of pipe fitting production.
Smart Images
Figure CN223043597U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of ductile iron pipe processing, and specifically to a pipe mold for manufacturing ductile iron pipes. Background Technique
[0002] Ductile iron pipes are a kind of pipeline material with excellent performance and are widely used in multiple fields. With their excellent corrosion resistance, compressive strength, and low water conveyance resistance, they have become the preferred material for urban water supply pipeline systems. Their smooth inner walls are not prone to scaling, which helps improve the quality and flow rate of water supply. During their production process, pipe molds are required to form the molten iron.
[0003] Patent No. CN 217617644 U discloses a pipe mold for manufacturing ductile iron pipes. Through the detachable installation between the first pipe mold, the second pipe mold, and the third pipe mold, it is convenient to assemble the first pipe mold, the second pipe mold, and the third pipe mold. After the iron pipe is cast by the device, the first pipe mold, the second pipe mold, and the third pipe mold are disassembled, and then the end cover at one end of the third pipe mold is disassembled, so as to facilitate the demolding of the cast iron pipe. By setting strengthening components on the outer sides of the first pipe mold, the second pipe mold, and the third pipe mold, the outer walls of the first pipe mold, the second pipe mold, and the third pipe mold can be strengthened to prevent the device from deforming during pipe casting, and the liquid material from flowing out through the gaps between the first pipe mold, the second pipe mold, and the third pipe mold, thereby solving the problem that in the existing pipe mold during use, there may be a phenomenon of slurry leakage at the joint, which is caused by the deformation of the steel mold, the deformation or damage of the joint opening resulting in an imperfect joint, and most of the existing pipe molds are integrally formed structures, which are not convenient for assembly and not convenient for subsequent demolding.
[0004] However, during use, it has the following defects:
[0005] Although three pipe molds are connected together to form the pipe fittings, which facilitates the subsequent demolding problem, when using multiple pipe fittings for forming, the molten iron flows step by step in the pipe mold. Due to the long flow path, the temperature may decrease during the process, which may cause the molten iron to flow difficultly, resulting in the inability to fill all the pipe molds and affecting the quality of pipe fitting production. Utility Model Content
[0006] The purpose of the present application is to provide a pipe mold for manufacturing ductile iron pipes, which solves the problem that when using multiple pipe fittings for forming, the molten iron flows step by step in the pipe mold. Due to the long flow path, the temperature may decrease during the process, which may cause the molten iron to flow difficultly, resulting in the inability to fill all the pipe molds and affecting the quality of pipe fitting production.
[0007] To achieve the above object, the present application provides the following technical solutions: A pipe mold for manufacturing ductile iron pipes, including a connecting ring, a pipe mold body, a heating arc plate and an electric heating wire. A clamping block opening is provided inside the top end of the connecting ring. The pipe mold body is movably inserted into the openings on both sides of the connecting ring. A base is fixedly connected to the bottom of the connecting ring. Connecting rods are fixedly connected to both sides of the base. The other ends of the connecting rods are fixedly connected to the center of the side wall of the adjusting groove. A bidirectional lead screw is rotatably connected inside the adjusting groove. Support rods are threadedly connected to both sides of the surface of the bidirectional lead screw. A fixing block is fixedly connected above the surface of the support rod facing the pipe mold body. A heating arc plate is fixedly connected to the surface of the fixing block facing the pipe mold body. An electric heating wire is fixedly connected inside the heating arc plate.
[0008] In this technical solution, raw materials for producing pipe fittings are added into the feeding port at the top end of the connecting ring, and the raw materials flow into the pipe mold bodies on both sides. A connecting ring is provided between every two pipe mold bodies, which can not only be infinitely extended, but also avoid the problem that the raw materials are too viscous to flow due to excessive temperature drop in the flow path. After the pipe mold body and the connecting ring are installed, the servo motor is started to drive the bidirectional lead screw to rotate, so that the support rods on both sides drive the heating arc plate to move towards the pipe mold body until it fits against the outer wall of the pipe mold body. The electric heating wire inside the heating arc plate generates heat after being powered on, thereby heating the pipe mold body, avoiding premature solidification of the internal raw materials, and extending the flowable time of the raw materials.
[0009] As an alternative embodiment of the technical solution of the present application, sealing gaskets are fixedly connected to the openings at both ends of the pipe mold body.
[0010] As an alternative embodiment of the technical solution of the present application, an end cover is detachably connected to the opening on the side of the pipe mold body away from the connecting ring by bolts.
[0011] As an alternative embodiment of the technical solution of the present application, four connecting blocks with bolt holes are fixedly connected in a circumferential array at the opening edges on the left and right sides of the connecting ring.
[0012] As an alternative embodiment of the technical solution of the present application, a servo motor is fixedly connected to the outer wall at one end of the adjusting groove, and the tail end of the transmission shaft of the servo motor is fixedly connected to one end of the bidirectional lead screw.
[0013] As an alternative embodiment of the technical solution of the present application, a heat-conducting metal sheet is fixedly connected to the inner arc surface of the heating arc plate.
[0014] Compared with the prior art, the beneficial effects of the present application are as follows:
[0015] 1. In this application, raw materials for producing pipe fittings are added into the feeding port at the top of the connecting ring, enabling the raw materials to flow into the pipe mold bodies on both sides. A connecting ring is provided between every two pipe mold bodies, which can not only be infinitely extended but also avoid the problem that the raw materials become viscous and difficult to flow due to excessive temperature drop in the large flow path, thus improving the pipe fitting production quality and production efficiency of the device.
[0016] 2. In this application, the pipe mold body can be heated and insulated through the adjustment groove, bidirectional lead screw, support rod, and heating arc plate. When the servo motor starts, it drives the bidirectional lead screw to rotate, causing the support rods on both sides to drive the heating arc plate to move towards the pipe mold body until it fits the outer wall of the pipe mold body. The electric heating wire inside the heating arc plate generates heat after being powered on, thereby heating the pipe mold body, avoiding the premature solidification of the internal raw materials, extending the flowable time of the raw materials, and improving the production quality and efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objectives, and advantages of this application will become more apparent:
[0018] Figure 1 It is the overall view of a pipe mold for manufacturing ductile iron pipes according to this application;
[0019] Figure 2 It is the schematic side view structure of a pipe mold for manufacturing ductile iron pipes according to this application;
[0020] Figure 3 It is the schematic front view structure of a pipe mold for manufacturing ductile iron pipes according to this application.
[0021] In the figure: 1, connecting ring; 2, base; 3, connecting rod; 4, adjustment groove; 5, bidirectional lead screw; 501, servo motor; 6, support rod; 601, fixing block; 7, heating arc plate; 701, heat-conducting metal sheet; 8, electric heating wire; 9, feeding port; 10, connecting block; 11, pipe mold body; 111, sealing gasket; 12, end cover. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] In order to make the technical means, creative features, objectives, and effects of the present utility model easy to understand, the following will further elaborate with reference to the specific embodiments.
[0023] A pipe mold for manufacturing ductile iron pipes, see Figures 1 to 3, including a connecting ring 1, a pipe mold body 11, a heating arc plate 7 and an electric heating wire 8. A feeding port 9 is opened in the top of the connecting ring 1, and the pipe mold body 11 is movably inserted at the openings on both sides of the connecting ring 1. By adding raw materials for producing pipe fittings into the feeding port 9 at the top of the connecting ring 1, a connecting ring 1 is arranged between every two pipe mold bodies 11, which can not only be infinitely extended, but also avoid the problem of excessive temperature drop in the flow path of the raw materials causing viscosity and difficulty in flowing; the bottom of the connecting ring 1 is fixedly connected to a base 2, and both sides of the base 2 are fixedly connected to connecting rods 3, and the other end of the connecting rod 3 is fixedly connected to the center of the side wall of the adjusting groove 4, and the inner side of the adjusting groove 4 is rotatably connected to a bidirectional screw rod 5, and both sides of the surface of the bidirectional screw rod 5 are threadedly connected to support rods 6, and the support A fixing block 601 is fixedly connected to the upper surface of the support rod 6 facing the tube mold body 11, and a heating arc plate 7 is fixedly connected to the surface of the fixing block 601 facing the tube mold body 11. The heating arc plates 7 on the left and right sides will form a complete circular ring after being fitted on the surface of the tube mold body 11, so as to facilitate heating of various positions, and this circular ring only covers the general area of the surface of the tube mold body 11, and the other half of the area is covered by the heating arc plate 7 connected to another connecting ring 1. An electric heating wire 8 is fixedly connected to the inner side of the heating arc plate 7. After the heating arc plate 7 is fitted with the outer wall of the tube mold body 11, the electric heating wire 8 on the inner side of the heating arc plate 7 generates heat after being energized, thereby heating the tube mold body 11, avoiding premature solidification of the internal raw material and extending the flow time of the raw material.
[0024] Specifically, Figure 1 As shown, sealing gaskets 111 are fixedly connected to the openings at both ends of the tube mold body 11. The sealing gaskets 111 can block the gap between the tube mold body 11 and the connecting ring 1, thereby increasing the sealing performance and preventing the raw material from leaking out.
[0025] It is worth noting that if Figure 1 As shown, the opening of the tube mold body 11 away from the connecting ring 1 is detachably connected to an end cover 12 by bolts. The end cover 12 can block one end of the tube mold body 11. When the production is completed and demoulding is required, the end cover 12 can be removed to facilitate unloading.
[0026] It is worth noting that if Figure 1 and Figure 2 As shown, four connecting blocks 10 with bolt holes are fixedly connected in a circular array at the opening edges on the left and right sides of the connecting ring 1. After the connecting blocks 10 are aligned with the bolt holes on the surface of the pipe mold body 11, bolts can be screwed in, thereby connecting the pipe mold body 11 and the connecting ring 1 together, thereby increasing stability.
[0027] It is worth noting that if Figure 1As shown, on the outer wall at one end of the adjustment groove 4, a servo motor 501 is fixedly connected. The tail end of the transmission shaft of the servo motor 501 is fixedly connected to one end of a bidirectional lead screw 5. After the servo motor 501 is started, it will drive the bidirectional lead screw 5 to rotate, causing the heating arc plate 7 to move horizontally and facilitating heating after it fits with the pipe mold body 11.
[0028] It should be noted that, as Figure 1 shown, on the inner arc surface of the heating arc plate 7, a heat-conducting metal sheet 701 is fixedly connected. The heat-conducting metal sheet 701 facilitates the absorption of the heat generated by the electric heating wire 8 and transfers the heat to the pipe mold body 11 when it fits with the pipe mold body 11, improving the heating efficiency.
[0029] During actual use, one end of the pipe mold body 11 is inserted into the connecting ring 1 until the bolt holes on its surface are aligned with the bolt holes on the surface of the connecting block 10 and screws are screwed in to complete the fixation. By adding the raw materials for producing pipe fittings into the feeding port 9 at the top of the connecting ring 1, the raw materials flow into the two side pipe mold bodies 11. Moreover, a connecting ring 1 is provided between every two pipe mold bodies 11, which can not only be infinitely extended but also avoid the problem that the raw material flow path is too large and the temperature drops, resulting in the raw material becoming viscous and difficult to flow, improving the pipe fitting production quality and production efficiency of the device. At the same time, through the adjustment groove 4, the bidirectional lead screw 5, the support rod 6, and the heating arc plate 7, the pipe mold body 11 can be heated and insulated. After the pipe mold body 11 and the connecting ring 1 are installed, the servo motor 501 is started to drive the bidirectional lead screw 5 to rotate, causing the two side support rods 6 to drive the heating arc plate 7 to move towards the pipe mold body 11 until it fits with the outer wall of the pipe mold body 11. The electric heating wire 8 inside the heating arc plate 7 generates heat after being energized, thereby heating the pipe mold body 11, avoiding the premature solidification of the internal raw materials, extending the flowable time of the raw materials, and improving the production quality and efficiency of the device.
[0030] In addition, the components designed in the present utility model are all common standard parts or parts known to those skilled in the art. Their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods. Those skilled in the art can fully implement them without further elaboration. The content protected by the present utility model does not involve improvements to the internal structure and method either.
[0031] The embodiments disclosed in the present utility model are preferred embodiments, but not limited to this. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are all within the protection scope of the present utility model.
Claims
1. A pipe mold for manufacturing ductile iron pipes, comprising a connecting ring (1), a pipe mold body (11), a heating arc plate (7) and an electric heating wire (8), characterized in that: A clamping block opening is provided in the top of the connecting ring (1), and a pipe mold body (11) is movably inserted into the openings on both sides of the connecting ring (1). The bottom of the connecting ring (1) is fixedly connected to a base (2), and both sides of the base (2) are fixedly connected to connecting rods (3). The other end of the connecting rod (3) is fixedly connected to the center of the side wall of the adjustment groove (4). The inner side of the adjustment groove (4) is rotatably connected to a bidirectional screw rod (5), and both sides of the surface of the bidirectional screw rod (5) are threadedly connected to support rods (6), and a fixed block (601) is fixedly connected to the upper surface of the support rod (6) facing the pipe mold body (11), and a heating arc plate (7) is fixedly connected to the surface of the fixed block (601) facing the pipe mold body (11), and an electric heating wire (8) is fixedly connected to the inner side of the heating arc plate (7).
2. The pipe mold for manufacturing ductile iron pipe according to claim 1, characterized in that: Sealing pads (111) are fixedly connected to the openings at both ends of the tube mold body (11).
3. The pipe mold for manufacturing ductile iron pipe according to claim 1, characterized in that: An opening of the pipe mold body (11) on a side away from the connecting ring (1) is detachably connected to an end cover (12) via bolts.
4. The pipe mold for manufacturing ductile iron pipe according to claim 1, characterized in that: Four connection blocks (10) provided with bolt holes are fixedly connected in a circumferential array at the opening edges on the left and right sides of the connection ring (1).
5. The pipe mold for manufacturing ductile iron pipe according to claim 1, characterized in that: A servo motor (501) is fixedly connected to the outer wall of one end of the adjustment slot (4), and the rear end of the transmission shaft of the servo motor (501) is fixedly connected to one end of the bidirectional screw rod (5).
6. The pipe mold for manufacturing ductile iron pipe according to claim 1, characterized in that: A heat-conducting metal sheet (701) is fixedly connected to the inner arc surface of the heating arc plate (7).