PE pipe extrusion die with cooling function

Abstract

The utility model relates to the technical field of pipe production, and discloses a PE pipe extrusion die with a cooling function, which comprises an extrusion pipe and a feed pipe, one end of the extrusion pipe is fixedly connected with a fixing sleeve, the other end of the extrusion pipe is fixedly connected with a discharge pipe, the feed pipe is positioned on one side, far away from the discharge pipe, of the extrusion pipe, and the feed pipe is positioned on the other side of the extrusion pipe. A fixing frame is fixedly connected to the inner wall of the extrusion pipe, an inner mold core is fixedly connected to the middle of the fixing frame, the inner mold core is arranged in the discharging pipe, fixing shells are fixedly connected to the two sides of the periphery of the feeding pipe, plug pins are slidably connected to the interiors of the fixing shells, and check blocks are fixedly connected to one sides of the peripheries of the plug pins; the other side of the periphery of the plug pin is sleeved with a spring. According to the PE pipe extrusion die disclosed by the utility model, pipes with different models and sizes can be produced by conveniently and rapidly replacing the sizes and models of the inner die core and the extrusion pipe of the extrusion die, the whole die does not need to be replaced, and the production investment is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe production, in particular to a PE pipe extrusion die with a cooling function. Background Art

[0002] PE pipe extrusion die is a key tool for producing polyethylene (PE) pipes. It extrudes molten polyethylene material into pipes of desired shape and size through the extrusion process.

[0003] A search revealed patent publication number CN219727125U, which discloses a PE pipe extrusion die. This utility model features an adjustable cross-plate height, allowing the die body to be elevated for easier installation. It also enables rapid and uniform cooling of the PE pipe, and the cooling water can be recycled multiple times, avoiding water waste and conserving resources.

[0004] However, the above-mentioned extrusion die still cannot adjust the size requirements of the extruded pipe, resulting in the need to replace and use different molds when producing different types of pipes, which leads to an increase in production cost investment. For this reason, a PE pipe extrusion die with a cooling function is proposed. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a PE pipe extrusion die with a cooling function, aiming to improve the problem in the prior art that different dies need to be replaced when producing different types of pipes.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a PE pipe extrusion mold with a cooling function, comprising an extrusion tube and a feed tube, one end of the extrusion tube is fixedly connected to a fixed sleeve, the other end of the extrusion tube is fixedly connected to a discharge tube, the feed tube is located on the side of the extrusion tube away from the discharge tube, the inner wall of the extrusion tube is fixedly connected to a fixed frame, the middle part of the fixed frame is fixedly connected to an inner mold core, the inner mold core is arranged inside the discharge tube, both sides of the outer periphery of the feed tube are fixedly connected to a fixed shell, a latch is slidably connected to the inside of the fixed shell, a block is fixedly connected to one side of the outer periphery of the latch, a spring is sleeved on the other side of the outer periphery of the latch, a clamping plate is slidably connected to the top of the fixed shell, a cooling assembly is sleeved on the outer periphery of the discharge tube, and a guide assembly is installed on the end of the discharge tube away from the extrusion tube.

[0007] As a further description of the above technical solution:

[0008] The guide assembly includes a fixed plate, which is installed on one end of the discharge pipe away from the extrusion pipe. The fixed plate is rotatably connected to the side away from the discharge pipe with two screws. A movable ring is threadedly connected between the outer peripheries of the two screws. The four corners inside the movable ring are slidably connected to movable rods. The adjacent ends of the four movable rods are rotatably connected to guide wheels, and a connecting rod is provided between the fixed plate and the movable rod.

[0009] As a further description of the above technical solution:

[0010] The outer side of the fixing sleeve is slidably connected to the inner side of the feed pipe, and the outer periphery of the latch penetrates the fixing shell and the feed pipe and is inserted into the interior of the fixing sleeve.

[0011] As a further description of the above technical solution:

[0012] One end of the spring is fixedly connected to the middle of the stopper, the other end of the spring is fixedly connected to the inner wall of the fixed shell, and the stopper is slidably connected to the inside of the fixed shell.

[0013] As a further description of the above technical solution:

[0014] The bottom of the clamping plate is arranged on the top of the stopper, and the top of the clamping plate is provided with an anti-slip plate, and the anti-slip plate is fixedly connected to the outside of the feed pipe.

[0015] As a further description of the above technical solution:

[0016] The cooling assembly includes a cooling jacket, the inner side of the cooling jacket is sleeved on the outer periphery of the discharge pipe, one end of the cooling jacket is fixedly connected to a liquid inlet, and the other end of the cooling jacket is fixedly connected to a liquid outlet.

[0017] As a further description of the above technical solution:

[0018] The edge of one side of the fixed plate away from the extrusion tube is fixedly connected with four sliding rods, and the interior of the movable ring is slidably connected to the outer periphery of the sliding rods.

[0019] As a further description of the above technical solution:

[0020] One end of the connecting rod is hinged to an end of the movable rod away from the guide wheel, and the other end of the connecting rod is hinged to the outer periphery of the fixed plate.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, the feed pipe, fixed sleeve, fixed shell, latch, block, spring and clamp cooperate to make the PE pipe extrusion die capable of producing pipes of different sizes and types by conveniently replacing the inner die core of the extrusion die and the size of the extruded pipe without having to replace the entire die, thereby effectively reducing production investment.

[0023] 2. In the present invention, through the cooperation of the fixed disk, screw, movable ring, movable rod, connecting rod, sliding rod and guide wheel, the PE pipe extrusion die can limit and guide the pipe after extrusion and cooling, ensuring that the pipe can stably enter the subsequent processing flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of a PE pipe extrusion die with cooling function proposed in the present invention;

[0025] Figure 2 This is a schematic diagram of the movable rod structure of a PE pipe extrusion die with cooling function proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the extruded tube of a PE pipe extrusion die with cooling function proposed in the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of a fixed shell of a PE pipe extrusion die with cooling function proposed by the present invention.

[0028] Legend:

[0029] 1. Extrusion tube; 2. Feed pipe; 3. Fixed sleeve; 4. Discharge pipe; 5. Fixed frame; 6. Inner mold core; 7. Fixed shell; 8. Latch; 9. Stopper; 10. Spring; 11. Clamp; 12. Anti-slip plate; 13. Cooling jacket; 14. Liquid inlet; 15. Liquid outlet; 16. Fixed plate; 17. Screw; 18. Movable ring; 19. Movable rod; 20. Connecting rod; 21. Slide rod; 22. Guide wheel. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figure 1 and Figure 3The utility model provides an embodiment: a PE pipe extrusion die with a cooling function, comprising an extrusion tube 1 and a feed tube 2, wherein the feed tube 2 is connected to the outlet of the extruder. A fixed sleeve 3 is fixedly connected to one end of the extrusion tube 1, and a discharge tube 4 is fixedly connected to the other end of the extrusion tube 1. After the molten PE material is extruded into the feed tube 2, it will directly enter the extrusion tube 1 and the discharge tube 4. The feed tube 2 is located on the side of the extrusion tube 1 away from the discharge tube 4. A fixing frame 5 is fixedly connected to the inner wall of the extrusion tube 1, and an inner mold core 6 is fixedly connected to the middle part of the fixing frame 5. The inner mold core 6 is arranged inside the discharge tube 4. Through the cooperation of the inner mold core 6 and the discharge tube 4, the molten material entering the discharge tube 4 will be shaped into the shape of the pipe after cooling.

[0032] Reference Figure 1 、 Figure 3 and Figure 4 The feed tube 2 is fixedly connected to a fixed housing 7 on both sides of its periphery. A latch 8 is slidably connected to the interior of the fixed housing 7. A stopper 9 is fixedly connected to one side of the latch 8, and a spring 10 is sleeved around the other side of the latch 8. A clip 11 is slidably connected to the top of the fixed housing 7. Pull the latch 8 to disengage it from the interior of the fixed housing 3 and the feed tube 2 until it is pulled and retracted into the fixed housing 7. When the latch 8 leaves the bottom of the clip 11, the clip 11 falls under the action of gravity and inserts into the fixed housing 7. Simultaneously, the movement of the latch 8 causes the stopper 9 to compress the spring 10. When the clip 11 falls into the fixed housing 7, it is blocked by the end of the latch 8. Releasing the latch 8 allows the clip 11 to reverse the spring 10 and generate a force that blocks its movement. Pulling the latch 8 on the other side releases the lock between the feed tube 2 and the fixed housing 3. The extrusion tube 1 and the structure mounted on it can then be removed and replaced with another model of extrusion tube 1. This enables the mold to quickly and conveniently produce different types of pipes by replacing some parts.

[0033] Reference Figure 1 、 Figure 3 and Figure 4The outer periphery of the discharge pipe 4 is provided with a cooling assembly, which can conveniently cool the melted PE material inside the mold and form it into a pipe. A guide assembly is installed at the end of the discharge pipe 4 away from the extrusion pipe 1. The guide assembly is installed at the center of the outlet of the mold through a bracket. The guide assembly can guide the extruded pipe so that it can smoothly enter the next process. The outer side of the fixed sleeve 3 is slidably connected to the inner side of the feed pipe 2. The outer periphery of the latch 8 passes through the fixed shell 7 and the feed pipe 2 and is inserted into the inside of the fixed sleeve 3 to ensure that the latch 8 can restrict the feed pipe 2 and the fixed sleeve 3 together, thereby fixing the connection between the feed pipe 2 and the extrusion pipe 1. One end of the spring 10 is fixedly connected to the middle of the stopper 9, and the other end of the spring 10 is fixedly connected to the inner wall of the fixed shell 7. The stopper 9 is slidably connected to the inside of the fixed shell 7. The spring 10 applies a thrust to the stopper 9 to ensure that the latch 8 will not fall off after being inserted into the inside of the fixed sleeve 3. The bottom of the card plate 11 is set on the top of the block 9, and an anti-slip plate 12 is set on the top of the card plate 11. The anti-slip plate 12 is fixedly connected to the outside of the feed pipe 2. The anti-slip plate 12 can prevent the card plate 11 from detaching from the top of the fixed shell 7.

[0034] Reference Figure 1 and Figure 2 The guide assembly includes a fixed disc 16, which is mounted on the end of the discharge tube 4 away from the extrusion tube 1. The fixed disc 16 is fixed to the outlet of the discharge tube 4 by a bracket, and the center point of the fixed disc 16 is located on the central axis of the mold. Two screws 17 are rotatably connected to the side of the fixed disc 16 away from the discharge tube 4. A movable ring 18 is threadedly connected between the outer circumferences of the two screws 17. The four corners of the movable ring 18 are slidably connected to movable rods 19. The adjacent ends of the four movable rods 19 are rotatably connected to guide wheels 22. A connecting rod 20 is provided between the fixed disc 16 and the movable rods 19. According to the model of the produced pipe, the screw 17 is rotated to drive the movable ring 18 to move around the outer periphery of the slide rod 21. As the movable ring 18 moves toward the fixed disk 16, the movable rod 19 and the connecting rod 20 cooperate to move the movable rod 19 toward the center of the movable ring 18, thereby driving the four guide wheels 22 toward the center of the movable ring 18. Similarly, when the movable ring 18 moves away from the fixed disk 16, the movable rod 19 will move toward the outside of the movable ring 18, and then the four guide wheels 22 will move toward the inside of the movable ring 18. By adjusting the distance between the four guide wheels 22 to match the model and size of the pipe, precise guidance of pipe extrusion can be achieved.

[0035] Reference Figure 1 and Figure 2Four slide bars 21 are fixedly connected to the edge of the fixed disk 16 on one side away from the extrusion tube 1. The movable ring 18 is slidably connected to the outer periphery of the slide bars 21. The four slide bars 21 can stably support the movable ring 18 and ensure its stable movement. One end of the connecting rod 20 is hinged to the end of the movable rod 19 away from the guide wheel 22. The other end of the connecting rod 20 is hinged to the outer periphery of the fixed disk 16. The cooperation between the connecting rod 20 and the movable ring 18 can drive the movable rod 19 to slide inside the movable ring 18, thereby adjusting the distance between the four guide wheels 22. The cooling assembly includes a cooling jacket 13, the inner side of which is sleeved on the outer periphery of the discharge pipe 4, one end of the cooling jacket 13 is fixedly connected to a liquid inlet 14, and the other end of the cooling jacket 13 is fixedly connected to a liquid outlet 15. The coolant enters the interior of the cooling jacket 13 through the liquid inlet 14. At this time, the cooling jacket 13 will quickly absorb the heat of the discharge pipe 4 and the molten material therein. At the same time, the absorbed heat will be absorbed and taken away by the coolant, discharged through the liquid outlet 15 and enter the external spray tower for cooling, and finally circulated to the liquid inlet 14, thereby achieving rapid cooling and helping the pipe extruded in the mold to be quickly formed.

[0036] Working Principle: When a different type of PE pipe needs to be produced, the worker simply pulls latch 8 to disengage it from the interior of the fixing sleeve 3 and feed tube 2 until it is retracted into the fixed shell 7. When latch 8 clears the bottom of retaining plate 11, it falls under the force of gravity and inserts into the fixed shell 7. Simultaneously, the movement of latch 8 compresses spring 10, causing retaining plate 11 to fall into the fixed shell 7 and block the end of latch 8. Releasing latch 8 allows retaining plate 11 to release the spring 10, generating a force that blocks the movement. Pulling latch 8 on the other side releases the lock between feed tube 2 and fixing sleeve 3. The extrusion tube 1 and its mounting structure can then be removed and replaced with another type of extrusion tube 1. The end of the other type of extrusion tube 1 is then inserted into the outside of the feed tube 2, locking the fixing sleeve 3 inside. At this time, the clamping plate 11 is pushed upward to separate it from the interior of the fixed shell 7, thereby eliminating the resistance at the end of the latch 8. At this time, the compressed spring 10 is reset to push the stopper 9 to move, and then the latch 8 is driven to move through the stopper 9. The latch 8 will pass through the fixed shell 7 and the feed tube 2 again and be inserted into the fixing sleeve 3 on the new extrusion tube 1, fixing the extrusion tube 1 and the feed tube 2.

[0037] As the extruder pushes the molten PE material into the tube, it enters the tapered structure within the extrusion tube 1 and is then forced into the discharge tube 4. The inner mold core 6 ensures that the incoming molten material forms a tube blank. The operation of the cooling assembly rapidly cools the tube blank within the discharge tube 4 and forms it. The formed tube is then extruded from the end of the discharge tube 4 and passes through the center of the movable ring 18. Four guide wheels 22 guide it, ensuring stable transport to the next processing step.

[0038] Before the formed pipe is extruded from the discharge pipe 4, according to the model of the produced pipe, the screw 17 is rotated to drive the movable ring 18 to move around the outer periphery of the slide rod 21. As the movable ring 18 moves toward the fixed disk 16, through the cooperation of the movable rod 19 and the connecting rod 20, the movable rod 19 will move toward the center of the movable ring 18 when the movable ring 18 moves, thereby driving the four guide wheels 22 toward the center of the movable ring 18. Similarly, when the movable ring 18 moves in the direction away from the fixed disk 16, the movable rod 19 will move toward the outside of the movable ring 18, and then the four guide wheels 22 will move toward the inside of the movable ring 18. By adjusting the distance between the four guide wheels 22 to match the model size of the pipe, precise guidance of pipe extrusion can be achieved.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A PE pipe extrusion die with a cooling function, comprising an extrusion pipe (1) and a feed pipe (2), characterized in that: One end of the extrusion tube (1) is fixedly connected to a fixed sleeve (3), and the other end of the extrusion tube (1) is fixedly connected to a discharge tube (4). The feed tube (2) is located on the side of the extrusion tube (1) away from the discharge tube (4). The inner wall of the extrusion tube (1) is fixedly connected to a fixed frame (5), and the middle part of the fixed frame (5) is fixedly connected to an inner mold core (6). The inner mold core (6) is arranged inside the discharge tube (4). Both sides of the outer periphery of the feed tube (2) are fixedly connected to fixed shells (7). The fixed shell (7) is slidably connected to a latch (8). One side of the outer periphery of the latch (8) is fixedly connected to a stopper (9), and the other side of the outer periphery of the latch (8) is sleeved with a spring (10). The top of the fixed shell (7) is slidably connected to a clamping plate (11). The outer periphery of the discharge tube (4) is sleeved with a cooling component, and the end of the discharge tube (4) away from the extrusion tube (1) is installed with a guide component.

2. The PE pipe extrusion die with cooling function according to claim 1, characterized in that: The guide assembly includes a fixed disk (16), which is installed at one end of the discharge pipe (4) away from the extrusion pipe (1), and the side of the fixed disk (16) away from the discharge pipe (4) is rotatably connected to two screws (17), and a movable ring (18) is threadedly connected between the outer peripheries of the two screws (17), and the four corners inside the movable ring (18) are slidably connected to movable rods (19), and the adjacent ends of the four movable rods (19) are rotatably connected to guide wheels (22), and a connecting rod (20) is provided between the fixed disk (16) and the movable rod (19).

3. The PE pipe extrusion die with cooling function according to claim 1, characterized in that: The outer side of the fixing sleeve (3) is slidably connected to the inner side of the feed pipe (2), and the outer periphery of the latch (8) passes through the fixing shell (7) and the feed pipe (2) and is inserted into the interior of the fixing sleeve (3).

4. The PE pipe extrusion die with cooling function according to claim 1, characterized in that: One end of the spring (10) is fixedly connected to the middle of the stopper (9), and the other end of the spring (10) is fixedly connected to the inner wall of the fixed shell (7). The stopper (9) is slidably connected inside the fixed shell (7).

5. The PE pipe extrusion die with cooling function according to claim 1, characterized in that: The bottom of the clamping plate (11) is arranged on the top of the stopper (9), and an anti-slip plate (12) is arranged on the top of the clamping plate (11), and the anti-slip plate (12) is fixedly connected to the outside of the feed pipe (2).

6. The PE pipe extrusion die with cooling function according to claim 1, characterized in that: The cooling assembly comprises a cooling jacket (13), the inner side of the cooling jacket (13) being sleeved on the outer periphery of the discharge pipe (4), one end of the cooling jacket (13) being fixedly connected to a liquid inlet (14), and the other end of the cooling jacket (13) being fixedly connected to a liquid outlet (15).

7. The PE pipe extrusion die with cooling function according to claim 2, characterized in that: The fixed disk (16) is fixedly connected to an edge of one side away from the extrusion tube (1) with four slide bars (21), and the inside of the movable ring (18) is slidably connected to the outer periphery of the slide bars (21).

8. The PE pipe extrusion die with cooling function according to claim 2, characterized in that: One end of the connecting rod (20) is hinged to one end of the movable rod (19) away from the guide wheel (22), and the other end of the connecting rod (20) is hinged to the outer periphery of the fixed disk (16).

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