Cooling device for continuous extrusion molding of PE (polyethylene) pipe

Abstract

The utility model relates to the technical field of cooling forming, and discloses a PE pipe continuous extrusion forming cooling device which comprises a bottom plate, a first fixing ring is fixedly connected to the position, close to the middle, of the left side of the top of the bottom plate, and a first connecting rod is fixedly connected to the position, close to the middle, of the right side of the first fixing ring. A plurality of first circular holes are formed in the outer walls of the first connecting rods, sliding rods are slidably connected to the inner walls of the first circular holes, springs are slidably connected to the outer walls of the sliding rods, and the positions, close to the middle, of the inner wall of the cooling inner cylinder are fixedly connected with the front sides of the sliding rods. According to the water pipe cooling device, when cooling is needed, a circular ring is extruded to the surface of the cooling inner cylinder, and at the moment, the cooling inner cylinder extrudes a spring according to the internal shape of a water pipe, so that a sliding rod moves along the interior of a first circular hole of a first connecting rod, and the water pipe cooling device can adapt to water pipes of different sizes; and the cooling effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cooling molding technology, and in particular to a cooling device for continuous extrusion molding of PE pipes. Background Technology

[0002] PE pipes, or polyethylene pipes, are characterized by their excellent corrosion resistance, effectively resisting the erosion of various chemicals. They also possess good flexibility, facilitating installation and laying. They are widely used in water supply and drainage systems and gas transmission. However, their production requires continuous extrusion molding. Polyethylene raw materials are added to the hopper of an extruder. Inside the extruder is a screw, driven by a motor, which rotates and generates forward thrust on the raw material. During this process, the raw material passes through a heating device, gradually increasing its temperature and causing the PE material to gradually transform from a solid state to a viscous flow state. When a suitable plasticizing state is reached, the molten PE material passes through a specific die. The shape of the die determines the outer and inner diameter of the pipe. After extrusion, the pipe is initially formed, but it is still relatively soft and requires a cooling device, typically using air or water cooling, to rapidly cool and solidify the pipe, thus maintaining its shape. Then, a traction device pulls the pipe out at a set speed, allowing for continuous extrusion molding of PE pipes and a continuous production of pipes. The cooling mechanism is particularly important in this molding process.

[0003] The cooling mechanism for continuous extrusion molding of PE pipes mainly consists of a cooling water tank and a cooling fan. It comprises a fan, a water tank, and a stationary block. The cooling water tank is the most common cooling component; it is typically a long, narrow trough. The pipe enters the tank directly after being extruded from the die. The tank is filled with cooling water, which is usually kept at a relatively low temperature. As the hot PE pipe passes through the tank, heat is transferred to the cooling water through heat conduction, rapidly cooling the pipe. The cooling fan comes into play after the pipe leaves the water tank, further cooling the pipe primarily through airflow. Cold air is blown onto the surface of the pipe, carrying away the heat and accelerating the cooling speed. At the same time, the position of the cooling mechanism and its coordination with the extruder are precisely designed to ensure that the pipe can enter the cooling stage in time while it is still soft after extrusion, and that the cooling speed can match the extrusion speed of the pipe, so that the pipe can be cooled evenly during continuous extrusion. This prevents the pipe from deforming or internal stress concentration due to excessive local temperature differences. However, this type of cooling mechanism can only be replaced for water pipes of one inner diameter and cannot be adapted to water pipes of different inner diameters, resulting in low cooling efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a cooling device for continuous extrusion molding of PE pipes, which aims to improve the problem that the existing cooling mechanism can only replace water pipes of one inner diameter and cannot adapt to water pipes of different inner diameters, resulting in low cooling efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a continuous extrusion molding cooling device for PE pipes, comprising a base plate, a fixing ring fixedly connected to the top left side near the center of the base plate, a connecting rod fixedly connected to the right side near the center of the fixing ring, multiple circular holes being formed on the outer wall of the connecting rod, a sliding rod slidably connected to the inner wall of each circular hole, a spring slidably connected to the outer wall of each sliding rod, a cooling inner cylinder fixedly connected to the outer wall of each spring, the inner wall of the cooling inner cylinder being fixedly connected to the front side of the sliding rod near the center, a ring fixedly connected to the right side of the connecting rod, a circular hole being formed inside the ring, a conical head fixedly connected to the right side of the ring, and a cooling mechanism provided on the top of the base plate for heat dissipation.

[0006] As a further description of the above technical solution:

[0007] The cooling mechanism includes multiple connecting bridges. The right side of the multiple connecting bridges is fixedly connected to the left side of the cooling inner cylinder. A heat sink is fixedly connected to the left side of the connecting bridge. A heat sink shell is fixedly connected to the left side of the first fixing ring near the edge. Multiple heat dissipation holes are opened on the outer wall of the heat sink shell. A fan is fixedly connected to the right side of the heat sink shell. Multiple heat dissipation holes are opened on the surface of the heat sink.

[0008] As a further description of the above technical solution:

[0009] A second fixing ring is fixedly connected to the left side of the outer wall of the heat sink, and the right side of the second fixing ring is fixedly connected to the left side of the fan near the middle.

[0010] As a further description of the above technical solution:

[0011] A cooling shell is fixedly connected to the right side of each of the fixing rings near the edge, and the outer wall of each cooling shell has multiple annular grooves.

[0012] As a further description of the above technical solution:

[0013] An air intake plate is fixedly connected to the left side of the second fixing ring, and multiple air intake holes are opened on the right side of the air intake plate.

[0014] As a further description of the above technical solution:

[0015] Multiple connecting rods are fixedly connected to the left side of each of the fixed rings, and a side plate is fixedly connected to the left side of each connecting rod.

[0016] As a further description of the above technical solution:

[0017] Multiple foot pads are fixedly connected to the bottom of the base plate around its perimeter, and multiple square holes are opened on the outer wall of the cooling inner cylinder.

[0018] As a further description of the above technical solution:

[0019] The left side of the fan is rotatably connected to a protective shell, and the left side of the protective shell is fixedly connected to the right side of the second fixing ring near the middle.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when cooling is required, the water pipe is first placed inside the cooling shell. Then, the water pipe is pressed against the surface of the upper ring by the conical head, and then pressed against the surface of the cooling inner cylinder by the ring. At this time, the cooling inner cylinder will compress the spring according to the internal shape of the water pipe. At the same time, the cooling inner cylinder will compress the sliding rod, so that the sliding rod moves along the inside of the circular hole of the connecting rod, thus realizing the function of cooling water pipes of different sizes.

[0022] 2. In this utility model, when cooling is required, heat is transferred to the connecting bridge through the cooling inner cylinder, and then to the heat sink through the connecting bridge. When the fan is turned on, the fan will draw in cold air through the air intake hole on the air intake plate, and then cool the heat sink through the second heat dissipation hole on the heat sink. The cooled hot air is then discharged out through the first heat dissipation hole of the heat sink shell, thus achieving the function of cooling the water pipe by cooling the heat sink. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a continuous extrusion molding and cooling device for PE pipes proposed in this utility model;

[0024] Figure 2 This is a partial structural breakdown diagram of the cooling inner cylinder of a continuous extrusion molding cooling device for PE pipes proposed in this utility model;

[0025] Figure 3 This is a partial structural exploded view of the heat dissipation shell of a continuous extrusion molding cooling device for PE pipes proposed in this utility model.

[0026] Figure 4 This is a partial structural exploded view of the connecting rod of a continuous extrusion molding and cooling device for PE pipes proposed in this utility model;

[0027] Figure 5 This is a partial structural breakdown diagram of the sliding rod of a continuous extrusion molding and cooling device for PE pipes proposed in this utility model.

[0028] Legend:

[0029] 1. Base plate; 2. Cooling mechanism; 201. Connecting bridge; 202. Heat sink; 203. Fan; 204. Heat sink shell; 205. Heat dissipation hole one; 206. Heat dissipation hole two; 3. Fixing ring one; 4. Connecting rod one; 5. Circular hole one; 6. Sliding rod; 7. Spring; 8. Ring; 9. Circular hole two; 10. Conical head; 11. Cooling inner cylinder; 12. Fixing ring two; 13. Cooling outer shell; 14. Annular groove; 15. Air inlet fin; 16. Air inlet hole; 17. Connecting rod two; 18. Foot pad; 19. Side plate; 20. Protective shell; 21. Square hole. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 1 Appendix Figure 4 and attached Figure 5 This utility model provides an embodiment of a continuous extrusion molding cooling device for PE pipes, comprising a base plate 1, a fixing ring 3 fixedly connected to the top left side of the base plate 1 near the middle, serving as a fixed connection, a connecting rod 4 fixedly connected to the right side of the fixing ring 3 near the middle, multiple circular holes 5 are provided on the outer wall of the connecting rod 4, a sliding rod 6 is slidably connected to the inner wall of the circular holes 5, and a spring 7 is slidably connected to the outer wall of the sliding rod 6, providing elastic support for the whole, a cooling inner cylinder 11 is fixedly connected to the outer wall of the spring 7, and the inner wall of the cooling inner cylinder 11 is fixedly connected to the front side of the sliding rod 6 near the middle, a ring 8 is fixedly connected to the right side of the connecting rod 4 for easy fixing, a circular hole 9 is provided inside the ring 8, and a conical head 10 is fixedly connected to the right side of the ring 8 for easy water pipe entry, and a cooling mechanism 2 is provided on the top of the base plate 1, which is used for heat dissipation;

[0032] Specifically, the device includes a base plate 1 that supports the entire assembly. A retaining ring 3 is fixedly connected to the top left side of the base plate 1, near the center. This retaining ring 3 provides a stable starting point for subsequent connecting components. Immediately following the retaining ring 3, a connecting rod 4 is fixedly connected to the right side, near the center. The connecting rod 4 allows for some movement on the retaining ring 3. To achieve this movement, multiple circular holes 5 are formed on the outer wall of the connecting rod 4, providing space for the sliding rod 6 to slide. Springs 7 are slidably connected to the outer wall of the sliding rod 6, providing support during its movement. A certain amount of elasticity is provided to ensure that the sliding rod 6 can slide smoothly in the circular hole 5. In addition, the outer wall of the spring 7 is fixedly connected to the cooling inner cylinder 11. The inner wall of the cooling inner cylinder 11 is fixedly connected to the front side of the sliding rod 6 near the center, so that the cooling inner cylinder 11 can move with the sliding rod 6 to achieve the cooling function. A ring 8 is fixedly connected to the right side of the connecting rod 4. A circular hole 9 is opened inside the ring 8. The circular hole 9 provides a special structure for the ring 8, which can be used in conjunction with other components. Finally, a conical head 10 is fixedly connected to the right side of the ring 8, so that the entire device can be effectively positioned and fixed in certain applications.

[0033] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The cooling mechanism 2 includes multiple connecting bridges 201. The right side of the multiple connecting bridges 201 is fixedly connected to the left side of the cooling inner cylinder 11. A heat sink 202 is fixedly connected to the left side of the connecting bridge 201. The heat sink is made of aluminum metal and plays a role in connecting and conducting heat. A heat sink shell 204 is fixedly connected to the left side of the fixing ring 3 near the edge. Multiple heat dissipation holes 205 are opened on the outer wall of the heat sink shell 204. A fan 203 is fixedly connected to the right side of the heat sink shell 204 to dissipate heat. Multiple heat dissipation holes 206 are opened on the surface of the heat sink 202.

[0034] Specifically, the cooling mechanism 2 consists of multiple connecting bridges 201. The right side of these connecting bridges 201 is fixedly connected to the left end of the cooling inner cylinder 11. The left end of each connecting bridge 201 is firmly connected to the heat sink 202 to ensure that heat can be effectively transferred from the cooling inner cylinder 11 to the heat sink 202. In addition, a heat sink shell 204 is also fixedly connected near the left edge of the fixing ring 3. Multiple heat dissipation holes 205 are evenly opened on the outer wall of the heat sink shell 204 to facilitate heat dissipation. A fan 203 is fixedly connected to the right end of the heat sink shell 204. The function of the fan 203 is to promote airflow, thereby enhancing the heat dissipation effect. In order to further improve the heat dissipation efficiency, multiple heat dissipation holes 206 are also opened on the surface of the heat sink 202. The heat dissipation holes 206 help airflow, so that the heat sink 202 can transfer heat to the surrounding environment more quickly.

[0035] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 A fixing ring 2 12 is fixedly connected to the left side of the outer wall of the heat sink 204. The right side of the fixing ring 2 12 is fixedly connected to the left side of the fan 203 near the middle, which can play a fixing role. The right side of the fixing ring 1 3 is fixedly connected to the cooling shell 13 near the edge. The outer wall of the cooling shell 13 is provided with multiple annular grooves 14. The left side of the fixing ring 2 12 is fixedly connected to the air intake plate 15 to facilitate air intake. The right side of the air intake plate 15 is provided with multiple air intake holes 16.

[0036] Specifically, the left side of the outer wall of the heat sink 204 is fixedly connected to the second fixing ring 12. This second fixing ring 12 is located on the right side of the heat sink 204 and near its center. It is also fixedly connected to the left side of the fan 203. In addition, the right side of the first fixing ring 3 is fixedly connected to the cooling shell 13 near the edge. In order to further improve the heat dissipation efficiency, multiple annular grooves 14 are provided on the outer wall of the cooling shell 13. These grooves help air circulation and heat dissipation. On the left side of the second fixing ring 12, an air intake fin 15 is also fixedly connected. Multiple air intake holes 16 are provided on the right side of the air intake fin 15. These holes allow air to enter and provide the airflow required for cooling the fan 203.

[0037] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3Multiple connecting rods 17 are fixedly connected to the left side of the fixing ring 1 3. A side plate 19 is fixedly connected to the left side of the connecting rod 17, making the overall connection more stable. Multiple foot pads 18 are fixedly connected to the bottom of the base plate 1. Multiple square holes 21 are opened on the outer wall of the cooling inner cylinder 11. A protective shell 20 is rotatably connected to the left side of the fan 203, which plays a stable protective role. The left side of the protective shell 20 is fixedly connected to the right side of the fixing ring 12 near the middle, making the overall connection more stable.

[0038] Specifically, multiple connecting rods 17 are fixedly connected to the left side of the fixing ring 1 3. Side plates 19 are fixedly connected to the left side of these connecting rods 17 to provide structural stability and support. At the same time, multiple foot pads 18 are fixedly connected to the bottom of the base plate 1 around its perimeter. These foot pads 18 not only protect the bottom of the equipment from damage but also ensure the stable placement of the equipment on different surfaces. In addition, multiple square holes 21 are opened on the outer wall of the cooling inner cylinder 11 to increase the air circulation area and improve cooling efficiency. Furthermore, a protective shell 20 is rotatably connected to the left side of the fan 203. The protective shell 20 not only protects the fan 203 from damage by external substances but also reduces noise. Finally, the left side of the protective shell 20 is fixedly connected to the right side of the fixing ring 12 near the middle. This connection method ensures a stable connection between the fan 203 assembly and the cooling system, thereby ensuring the efficient operation of the entire equipment.

[0039] Working principle: When cooling is required, the water pipe is first placed inside the cooling shell 13. Then, the water pipe is pressed against the surface of the ring 8 by the conical head 10, and then pressed against the surface of the cooling inner cylinder 11 by the ring 8. At this time, the cooling inner cylinder 11 will compress the spring 7 according to the internal shape of the water pipe. At the same time, the cooling inner cylinder 11 will compress the sliding rod 6, so that the sliding rod 6 moves along the inside of the circular hole 5 of the connecting rod 4 until the cooling inner cylinder 11 is in contact with the inner wall of the water pipe. At this time, the outer wall of the water pipe is in contact with the inner wall of the cooling shell 13, which can perform cooling treatment. This achieves the function of cooling water pipes of different sizes.

[0040] When cooling is required, heat is transferred through the cooling inner cylinder 11 to the connecting bridge 201, and then through the connecting bridge 201 to the heat sink 202. The fan 203 is then activated, drawing in cool air through the air intake hole 16 on the air intake fin 15. The air then passes through the second heat dissipation hole 206 on the heat sink 202 to cool it down. The cooled hot air is then exhausted through the first heat dissipation hole 205 on the heat sink shell 204, thus achieving the effect of cooling the water pipe by cooling the heat sink 202.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A PE pipe continuous extrusion molding cooling device comprising a base plate (1), characterized in that: The top left side of the bottom plate (1) is fixedly connected with a fixed ring one (3), the right side of the fixed ring one (3) is fixedly connected with a connecting rod one (4), a plurality of circular holes one (5) are formed in the outer wall of the connecting rod one (4), a sliding rod (6) is slidably connected with the inner wall of the circular hole one (5), a spring (7) is slidably connected with the outer wall of the sliding rod (6), a cooling inner cylinder (11) is fixedly connected with the outer wall of the spring (7), the inner wall of the cooling inner cylinder (11) is fixedly connected with the front side of the sliding rod (6), a circular ring (8) is fixedly connected with the right side of the connecting rod one (4), a circular hole two (9) is formed in the inside of the circular ring (8), a conical head (10) is fixedly connected with the right side of the circular ring (8), and the top of the bottom plate (1) is provided with a cooling mechanism (2).

2. The PE pipe continuous extrusion molding and cooling device according to claim 1, characterized in that: The cooling mechanism (2) comprises a plurality of connecting bridges (201), the right side of the connecting bridge (201) is fixedly connected with the left side of the cooling inner cylinder (11), the left side of the connecting bridge (201) is fixedly connected with a cooling fin (202), the left side of the fixed ring one (3) is fixedly connected with a cooling shell (204), a plurality of cooling holes one (205) are formed in the outer wall of the cooling shell (204), the right side of the cooling shell (204) is fixedly connected with a fan (203), and a plurality of cooling holes two (206) are formed in the surface of the cooling fin (202).

3. A PE pipe continuous extrusion molding cooling device according to claim 2, characterized in that: The outer wall left side of the cooling shell (204) is fixedly connected with a fixed ring two (12), and the right side of the fixed ring two (12) is fixedly connected with the left side of the fan (203).

4. The PE pipe continuous extrusion molding and cooling device according to claim 1, characterized in that: The right side of the fixed ring one (3) is fixedly connected with a cooling shell (13), and a plurality of annular grooves (14) are formed in the outer wall of the cooling shell (13).

5. The PE pipe continuous extrusion molding and cooling device according to claim 3, characterized in that: The left side of the fixed ring two (12) is fixedly connected with an air inlet fin (15), and a plurality of air inlet holes (16) are formed in the right side of the air inlet fin (15).

6. A PE pipe continuous extrusion molding cooling device according to claim 1, characterized in that: The left side of the fixed ring one (3) is fixedly connected with a plurality of connecting rods two (17), and the left side of the connecting rod two (17) is fixedly connected with a side plate (19).

7. The PE pipe continuous extrusion molding and cooling device according to claim 1, characterized in that: The bottom of the bottom plate (1) is fixedly connected with a plurality of foot pads (18), and a plurality of square holes (21) are formed in the outer wall of the cooling inner cylinder (11).

8. The PE pipe continuous extrusion molding and cooling device according to claim 2, characterized in that: The left side of the fan (203) is rotatably connected with a protective shell (20), and the left side of the protective shell (20) is fixedly connected with the right side of the fixed ring two (12).

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