Hexagonal drain pipe extrusion molding machine
The problem of uneven cooling of hexagonal drain pipes was solved by the internal and external dual cooling system, achieving uniform cooling and high-quality finished products, and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU GUOSU TECH PIPE CO LTD
- Filing Date
- 2025-01-21
- Publication Date
- 2026-04-28
AI Technical Summary
Existing hexagonal drainage pipes are cooled only from the outside during extrusion molding, resulting in uneven cooling, deformation, and uneven wall thickness, which reduces the quality of the finished product.
A hexagonal drainage pipe extrusion molding machine was designed, which adopts a dual internal and external cooling system. The inner and outer parts of the hexagonal pipe are cooled by the inner and outer cooling pipes respectively. Uniform cooling is achieved by using water flow channels and manifolds, and cooling water leakage is prevented by sealing water-blocking rings.
This achieves uniform cooling inside and outside the hexagonal tube, avoids deformation and uneven wall thickness, and improves the quality of the finished product.
Smart Images
Figure CN224170447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water pipe extrusion molding technology, specifically a hexagonal drainage pipe extrusion molding machine. Background Technology
[0002] A drainage pipe forming extruder is a device used for drainage pipes. It mainly processes plastic materials into the required pipe shape through extrusion molding. Extrusion molding is a process in which plastic is heated, frictionally sheared to a viscous state, and then formed through a mold under pressure. Because the extrusion molding production process is continuous, it has high production efficiency and low investment.
[0003] Currently, hexagonal drainage pipes are often cooled by spraying during extrusion molding. However, cooling only from the outside of the formed pipe will result in uneven cooling, which can easily lead to defects such as deformation and uneven wall thickness during the cooling and shaping process, thus reducing the quality of the finished cooling inner pipe. To address this, we propose an extrusion molding machine for hexagonal drainage pipes. Utility Model Content
[0004] The purpose of this invention is to provide a hexagonal drainage pipe extrusion molding machine that can simultaneously cool the inside and outside of the cooling inner pipe during the cooling and shaping process, thereby improving the uniformity of cooling and avoiding defects such as deformation and uneven wall thickness. This improves the quality of the finished cooling inner pipe and solves the problem that currently, hexagonal drainage pipes often use spray cooling during extrusion molding, but this method of cooling only from the outside of the formed pipe will result in uneven cooling, which easily leads to defects such as deformation and uneven wall thickness during the cooling and shaping process, thus reducing the quality of the finished cooling inner pipe.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a hexagonal drainage pipe extrusion molding machine, comprising an extruder barrel, a water outlet pipe, and a water inlet pipe. One end of the extruder barrel is connected to a forming die tube, and the end of the forming die tube is connected to a cooling outer pipe. Both the forming die tube and the cooling outer pipe have hexagonal outer walls on their outer surfaces. A forming die column is installed inside the forming die tube, and two water flow channels are provided inside the forming die column. A cooling inner pipe is connected to the end of the forming die column near the cooling outer pipe. Both the forming die column and the cooling inner pipe have hexagonal outer walls on their outer surfaces. A partition plate is fixedly installed inside the cooling inner pipe. One end of the water inlet pipe is connected to a branch pipe, and both ends of the branch pipe are respectively connected to the lower surfaces of the forming die column and the cooling outer pipe. One end of the water outlet pipe is connected to a manifold, and both ends of the manifold are respectively connected to the upper surfaces of the forming die column and the cooling outer pipe.
[0006] Preferably, the water flow channel and the inner cooling pipe are connected, the two ends of the manifold are respectively connected to one of the water flow channels and the inner cooling pipe, and the two ends of the branch pipe are respectively connected to the other water flow channel and the inner cooling pipe.
[0007] Preferably, the inner walls of both water channels are provided with heat insulation layers. The heat insulation layers can prevent the cooling water inside the water channels from carrying away the heat of the molding column, so that the molten plastic can be better extruded and molded between the inner wall of the molding tube and the outer surface of the molding column.
[0008] Preferably, the inner diameter of the forming mold tube is larger than the inner diameter of the cooling outer tube, which results in a water flow gap between the inner wall of the cooling outer tube and the outer surface of the hexagonal tube being cooled.
[0009] Preferably, a fixing ring is installed at the end of the cooling outer tube, and a sealing water-blocking ring is installed on the inner wall of the fixing ring. The cooling inner tube, after being cooled and formed, passes through the sealing water-blocking ring. The sealing water-blocking ring can seal the outer surface of the cooling inner tube and the end of the cooling outer tube after cooling and forming, so as to prevent the cooling water inside the cooling outer tube from flowing out from the end of the cooling outer tube.
[0010] Preferably, a rotary motor is installed at the end of the extruder barrel away from the forming die tube. The output shaft of the rotary motor is connected to an extrusion screw, which is located inside the extruder barrel. The rotary motor drives the extrusion screw to rotate, and the plastic granules are molten and squeezed into the forming die tube.
[0011] Preferably, a feed pipe is connected to the side of the upper surface of the extruder barrel away from the forming die tube, and a hopper is connected to the end of the feed pipe. The plastic raw material is stored inside the hopper and enters the extruder barrel through the feed pipe.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. This utility model, by setting up an extruder barrel, forming die tube, cooling outer tube, hexagonal inner wall, forming die column, cooling inner tube, partition, water flow channel, water inlet pipe, branch pipe, water outlet pipe, and return pipe, achieves simultaneous cooling of the inside and outside of the hexagonal tube during the cooling and shaping process, improving the uniformity of cooling and avoiding defects such as deformation and uneven wall thickness, thus improving the quality of the finished hexagonal tube. The molten plastic inside the extruder barrel enters between the inner wall of the forming die tube and the forming die column, and is extruded into a hexagonal tube, while simultaneously cooling... Cooling water enters one of the water flow channels and the interior of the cooling outer pipe through branch pipes. The cooling water inside the cooling outer pipe contacts the outer surface of the formed hexagonal pipe, thus cooling the outside of the formed hexagonal pipe. Meanwhile, the cooling water inside the water flow channel enters the interior of the cooling inner pipe, thus cooling the inside of the formed hexagonal pipe. Therefore, the inside and outside of the hexagonal pipe are cooled simultaneously, resulting in more uniform cooling. The cooling water inside the cooling outer pipe flows back into the manifold, and the cooling water inside the cooling inner pipe also flows back into the manifold through another water flow channel, and then is discharged through the outlet pipe.
[0014] 2. By setting a sealing water-blocking ring, this utility model can seal the outer surface of the hexagonal tube after cooling and forming and the end of the cooling outer tube, so as to prevent the cooling water inside the cooling outer tube from flowing out from the end of the cooling outer tube.
[0015] 3. By setting a heat insulation layer, this utility model can prevent the cooling water inside the water flow channel from carrying away the heat of the molding die column, so that the molten plastic can be better extruded and molded between the inner wall of the molding die tube and the outer surface of the molding die column. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the main sectional structure of this utility model;
[0018] Figure 3 This is a partial main sectional view of the hexagonal forming mold tube and cooling inner tube of this utility model;
[0019] Figure 4 This is a partial main sectional view of the fixing ring of this utility model.
[0020] Reference numerals in the attached drawings: 1. Extruder barrel; 2. Rotating motor; 3. Hopper; 4. Feed pipe; 5. Water outlet pipe; 6. Manifold; 7. Cooling outer pipe; 8. Fixing ring; 9. Water inlet pipe; 10. Branch pipe; 11. Forming die tube; 12. Extrusion screw; 13. Hexagonal inner wall; 14. Cooling inner pipe; 15. Forming die column; 16. Water flow channel; 17. Heat insulation layer; 18. Hexagonal outer wall; 19. Partition plate; 20. Sealing water-blocking ring. Detailed Implementation
[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0022] like Figures 1-4 As shown, the present invention proposes a hexagonal drainage pipe extrusion molding machine, including an extruder barrel 1, a water outlet pipe 5, and a water inlet pipe 9. A feed pipe 4 is connected to the side of the upper surface of the extruder barrel 1 away from the forming die tube 11. A hopper 3 is connected to the end of the feed pipe 4. Plastic granule raw materials are stored inside the hopper 3 and enter the extruder barrel 1 through the feed pipe 4. A rotary motor 2 is installed at the end of the extruder barrel 1 away from the forming die tube 11. An extrusion screw 12 is connected to the end of the output shaft of the rotary motor 2, and the extrusion screw 12 is located inside the extruder barrel 1. The rotary motor 2 drives the extrusion screw 12 to rotate. A forming die tube 11 is connected to one end of the extruder barrel 1, and a cooling outer pipe 7 is connected to the end of the forming die tube 11. The inner diameter of the forming die tube 11 is larger than the inner diameter of the cooling outer pipe 7. Therefore, when the hexagonal tube in cooling and shaping enters the cooling outer pipe 7, there is a water flow gap between the inner wall of the cooling outer pipe 7 and the outer surface of the hexagonal tube in cooling.
[0023] Both the molding tube 11 and the cooling outer tube 7 have hexagonal inner walls 13. A molding column 15 is installed inside the molding tube 11. The molding column 15 has two water channels 16 inside. The inner walls of the two water channels 16 are provided with heat insulation layers 17, which can prevent the cooling water inside the water channels 16 from carrying away the heat of the molding column 15. This allows the molten plastic to be better extruded and molded between the inner wall of the molding tube 11 and the outer surface of the molding column 15. The end of the molding column 15 near the cooling outer tube 7 is connected to a cooling inner tube 14. The cooling inner tube 14 is located inside the cooling outer tube 7 and is made of a heat-conducting material. The hexagonal tube in cooling is sleeved on the outer surface of the cooling inner tube 14. Both the molding column 15 and the outer surface of the cooling inner tube 14 are provided with hexagonal outer walls 18.
[0024] A partition plate 19 is fixedly installed inside the cooling inner tube 14, dividing the interior of the cooling inner tube 14 into two connected chambers for cooling water flow. One end of the water inlet pipe 9 is connected to a branch pipe 10, and the two ends of the branch pipe 10 are respectively connected to the molding die column 15 and the lower surface of the cooling outer tube 7. One end of the water outlet pipe 5 is connected to a manifold 6, and the two ends of the manifold 6 are respectively connected to the molding die column 15 and the upper surface of the cooling outer tube 7. The water flow channel 16 is connected to the interior of the cooling inner tube 14. The two ends of the manifold 6 are respectively connected to one of the water flow channels 16 and the interior of the cooling outer tube 7. The two ends of the branch pipe 10 are respectively connected to the other water flow channel 16 and the interior of the cooling outer tube 7. A fixing ring 8 is installed at the end of the cooling outer tube 7, and a sealing water-blocking ring 20 is installed on the inner wall of the fixing ring 8. The sealing water-blocking ring 20 can seal the outer surface of the hexagonal tube after cooling and molding and the end of the cooling outer tube 7 to prevent the cooling water inside the cooling outer tube 7 from flowing out from the end of the cooling outer tube 7.
[0025] In use, the molten plastic inside the extruder barrel 1 enters between the inner wall of the forming die tube 11 and the forming die column 15, and is extruded into a hexagonal tube. At the same time, cooling water enters one of the water flow channels 16 and the cooling outer tube 7 through the branch pipe 10. The cooling water inside the cooling outer tube 7 contacts the outer surface of the formed hexagonal tube, so as to cool the outside of the formed hexagonal tube. Meanwhile, the cooling water inside the water flow channel 16 enters the cooling inner tube 14, so as to cool the inside of the formed hexagonal tube. Thus, the inside and outside of the hexagonal tube are cooled simultaneously, making the cooling more uniform. The cooling water inside the cooling outer tube 7 flows back into the manifold 6, and the cooling water inside the cooling inner tube 14 also flows back into the manifold 6 through the other water flow channel 16, and then is discharged through the outlet pipe 5.
[0026] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A hexagonal drainage pipe extrusion molding machine, comprising an extruder barrel (1), a water outlet pipe (5), and a water inlet pipe (9), characterized in that: One end of the extruder barrel (1) is connected to a forming die tube (11), and the other end of the forming die tube (11) is connected to a cooling outer tube (7). Both the forming die tube (11) and the cooling outer tube (7) have hexagonal inner walls (13). A forming die column (15) is installed inside the forming die tube (11). The forming die column (15) has two water flow channels (16) inside. The end of the forming die column (15) near the cooling outer tube (7) is connected to a cooling inner tube (14). The outer surfaces of the mold column (15) and the cooling inner tube (14) are provided with hexagonal outer walls (18). A partition plate (19) is fixedly installed inside the cooling inner tube (14). One end of the water inlet pipe (9) is connected to a branch pipe (10). The two ends of the branch pipe (10) are respectively connected to the lower surfaces of the molding mold column (15) and the cooling outer tube (7). One end of the water outlet pipe (5) is connected to a manifold (6). The two ends of the manifold (6) are respectively connected to the upper surfaces of the molding mold column (15) and the cooling outer tube (7).
2. The hexagonal drainage pipe extrusion molding machine according to claim 1, characterized in that: The water flow channel (16) and the cooling inner pipe (14) are connected internally. The two ends of the manifold (6) are respectively connected to one of the water flow channels (16) and the cooling outer pipe (7). The two ends of the branch pipe (10) are respectively connected to the other water flow channel (16) and the cooling outer pipe (7).
3. The hexagonal drainage pipe extrusion molding machine according to claim 2, characterized in that: The inner walls of both water channels (16) are provided with heat insulation layers (17).
4. The hexagonal drainage pipe extrusion molding machine according to claim 1, characterized in that: The inner diameter of the forming mold tube (11) is larger than the inner diameter of the cooling outer tube (7).
5. The hexagonal drainage pipe extrusion molding machine according to claim 4, characterized in that: A fixing ring (8) is installed at the end of the cooling outer pipe (7), and a sealing water-blocking ring (20) is installed on the inner wall of the fixing ring (8).
6. The hexagonal drainage pipe extrusion molding machine according to claim 1, characterized in that: A rotary motor (2) is installed at one end of the extruder barrel (1) away from the forming die tube (11). The output shaft of the rotary motor (2) is connected to an extrusion screw (12), and the extrusion screw (12) is located inside the extruder barrel (1).
7. The hexagonal drainage pipe extrusion molding machine according to claim 1, characterized in that: The upper surface of the extruder barrel (1) is connected to a feed pipe (4) on the side opposite to the forming die tube (11), and the end of the feed pipe (4) is connected to a hopper (3).