Sizing and cooling device for pipeline forming

Abstract

The utility model provides a pipeline forming sizing cooling device which is characterized in that a sizing sleeve is arranged on a pipeline extrusion head at the end part of an extruder, the outer diameter of the sizing sleeve is flush with the outer surface of an extrusion ring inner ring of the pipeline extrusion head, the inside of the sizing sleeve is of a hollow structure, the inside of a ring body of an outer ring of the sizing sleeve is of a closed structure, and two interfaces are symmetrically arranged at the end part of the ring body of the outer ring of the sizing sleeve; the two connectors are communicated with a water outlet pipeline and a water inlet pipeline respectively, the water outlet pipeline is communicated with a cold water pool, and the cold water pool is communicated with the water inlet pipeline through a water pump to form circulation. The water cooling channel is arranged in the ring body of the outer ring of the sizing sleeve and is connected with the cold water pool, so that circulating flow of cooling water can be realized. Therefore, heat absorbed when the sizing sleeve works can be effectively taken away, the sizing sleeve is kept at a lower working temperature, and the cooling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of pipe forming, in particular to a pipe forming sizing and cooling device. Background Art

[0002] In the production process of plastic pipes, extrusion molding is one of the key links. After the plastic raw materials are heated and melted by an extruder, they are extruded through a pipe extrusion head at the end of the extruder and enter a pipe mold for forming. In order to ensure the dimensional accuracy and straightness of the extruded pipe, a sizing sleeve is usually installed on the pipe extrusion head of the extruder to control the stability of the pipe diameter. However, the sizing sleeves in the prior art often do not have a cooling function, which means that under the continuous operation for a long time, due to the influence of the continuous high temperature of the plastic melt, the temperature of the sizing sleeve will also rise accordingly.

[0003] When the temperature of the sizing sleeve rises, when its surface contacts the inner wall of the plastic pipe in the molten state, it cannot effectively help the inner wall of the pipe cool down and solidify quickly. As a result, the plastic pipe contacts the surface of the high-temperature sizing sleeve before it is completely cooled, which is likely to cause adhesion. This adhesion will not only affect the smooth sliding of the pipe during the sizing process, but also lead to a decrease in the working efficiency of the extruder, thus indirectly affecting the production rate of the entire production line. In addition, the deformation or quality problems that may occur on the inner wall of the pipe due to the failure to cool in time will also have an adverse impact on the subsequent processing and the final performance of the product. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a pipe forming sizing and cooling device to solve the problem of insufficient cooling caused by the temperature rise of the existing sizing sleeve during long-term use.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: a pipe forming sizing and cooling device, a sizing sleeve is provided on the pipe extrusion head at the end of the extruder, the outer diameter of the sizing sleeve is flush with the outer surface of the inner ring of the extrusion ring of the pipe extrusion head, the inside of the sizing sleeve is a hollow structure, the inside of the outer ring body of the sizing sleeve is a closed structure, two interfaces are symmetrically provided at the end of the outer ring body of the sizing sleeve, the two interfaces are respectively communicated with a water outlet pipe and a water inlet pipe, the water outlet pipe is communicated with a cold water pool, and the cold water pool is communicated with the water inlet pipe through a water pump to form a cycle.

[0006] In a preferred solution, a protruding positioning ring is provided on the surface of the pipe extrusion head, and the end of the sizing sleeve is sleeved on the positioning ring.

[0007] In a preferred solution, an installation ring is provided inside the tail end of the sizing sleeve, and a plurality of installation rods pass through the installation ring and are threadedly connected to the end face of the pipe extrusion head.

[0008] In a preferred embodiment, a spiral ring is further provided inside the outer ring body of the sizing sleeve, and the outer ring of the spiral ring is close to the inner wall of the outer ring of the sizing sleeve with a distance left therebetween.

[0009] In a preferred embodiment, the water outlet pipe is connected to the cooling tower, the cooling tower is connected to the cold water tank, and a refrigeration device is provided inside the cold water tank.

[0010] The utility model provides a pipe forming and sizing cooling device. By arranging a water cooling channel inside the outer ring body of the sizing sleeve and connecting it to the cold water tank, the circulating flow of cooling water can be realized. In this way, the heat absorbed by the sizing sleeve during operation can be effectively taken away, keeping the sizing sleeve at a lower working temperature, and improving the cooling efficiency. Good cooling performance can prevent adhesion between the inner wall of the pipe and the sizing sleeve, reduce the resistance of the pipe during the sizing process, thereby accelerating the extrusion speed and improving the production efficiency. By maintaining stable cooling conditions, it can ensure that the inner wall of the pipe is evenly cooled and solidified during the forming process, avoiding deformation or other quality problems caused by overheating, thus ensuring the quality of the final product. Continuous cooling can reduce the damage to the sizing sleeve material caused by high temperature, extend the service life of the equipment, and reduce the maintenance cost. A sizing device with good cooling performance can not only improve the production efficiency, but also ensure the high-quality output of the product, which is crucial for enhancing the competitiveness of plastic pipe products in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The following further describes the utility model with reference to the drawings and embodiments:

[0012] Figure 1 is the overall connection structure diagram of the utility model;

[0013] Figure 2 is the installation structure diagram of the sizing sleeve of the utility model;

[0014] Figure 3 is the structure diagram of the sizing sleeve of the utility model.

[0015] In the figure: cooling tower 1; cold water tank 2; water pump 3; extruder 4; pipe extrusion head 5; positioning ring 501; sizing sleeve 6; spiral ring 601; pipe 7; water outlet pipe 8; water inlet pipe 9; mounting rod 10; mounting ring 11. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] As Figures 1 to 3As shown, a pipe forming sizing and cooling device is provided, a sizing sleeve 6 is provided on the pipe extrusion head 5 at the end of the extruder 4, the outer diameter of the sizing sleeve 6 is flush with the outer surface of the inner ring of the extrusion ring of the pipe extrusion head 5, the inside of the sizing sleeve 6 is a hollow structure, the inside of the outer ring body of the sizing sleeve 6 is a closed structure, and the end of the outer ring body of the sizing sleeve 6 is symmetrically provided with two interfaces, the two interfaces are respectively connected to the water outlet pipe 8 and the water inlet pipe 9, the water outlet pipe 8 is connected to the cold water pool 2, and the cold water pool 2 is connected to the water inlet pipe 9 through the water pump 3 to form a circulation.

[0017] In the pipeline forming sizing and cooling device, a sizing sleeve 6 is provided on the pipeline extrusion head 5 at the end of the extruder 4, and the outer diameter of the sizing sleeve 6 is flush with the outer surface of the inner ring of the extrusion ring of the pipeline extrusion head 5, ensuring that the plastic melt can smoothly transition to the sizing sleeve 6. The interior of the sizing sleeve 6 is a hollow structure, and the interior of its outer ring body is a closed structure, and two symmetrical interfaces are designed, which are respectively connected to the water outlet pipe 8 and the water inlet pipe 9. The water outlet pipe 8 is connected to the cold water pool 2, and the cold water pool 2 is connected to the water inlet pipe 9 through the water pump 3, thereby forming a circulating cooling water system. The interior of the outer ring of the sizing sleeve 6 is connected to the cold water pool 2, and the water cooling technology is used to achieve a good cooling effect on the sizing sleeve 6, which helps to improve the extrusion speed and production efficiency.

[0018] The sizing sleeve 6 is installed at the front end of the pipe extruder to control the size of the extruded pipe and ensure that the diameter of the pipe is consistent. The outer diameter of the sizing sleeve should be flush with the outer surface of the inner ring of the pipe extruder to ensure that the plastic melt can pass smoothly and obtain the correct size in the sizing sleeve. The inside of the sizing sleeve is a hollow structure to facilitate the circulation of cooling water to achieve a cooling effect.

[0019] The cold water pool 2 is a cooling water source, which provides low-temperature cooling water for the cooling system. Through the circulation system, the cold water pool supplies low-temperature cooling water to the sizing sleeve to take away the heat generated by the sizing sleeve during operation.

[0020] Water pump 3 The water pump drives the cooling water to circulate and ensure that the cooling water flows continuously in the system. Connect the cold water pool with the water inlet pipe, start the water pump, and draw the cooling water from the cold water pool, pass through the sizing sleeve, and return to the cold water pool to form a closed circulation system.

[0021] The outlet pipe 8 and the inlet pipe 9 connect the sizing sleeve 6 and the cold water pool 2 to ensure that the cooling water can flow into the sizing sleeve 6 and discharge the hot water. The inlet pipe connects the cold water pool and the sizing sleeve 6, and the outlet pipe connects the sizing sleeve 6 and the cold water pool 2 to form an inlet and outlet path for the cooling water.

[0022] In a preferred embodiment, the surface of the pipe extrusion head 5 is provided with a protruding positioning ring 501, and the end of the sizing sleeve 6 is sleeved on the positioning ring 501. The design of the positioning ring 501 helps to accurately install the sizing sleeve 6, preventing it from shifting or becoming unstable during use, thus ensuring the consistency of the extruded pipe size and the smooth progress of the extrusion process.

[0023] In a preferred embodiment, an installation ring 11 is provided inside the tail end of the sizing sleeve 6, and a plurality of installation rods 10 pass through the installation ring 11 and are threadedly connected to the end face of the pipe extrusion head 5. This installation method provides a more stable fixing effect, ensuring the stability of the sizing sleeve 6 during use. The installation ring 11 is located inside the tail end of the sizing sleeve 6 and serves as a support point for the plurality of installation rods 10, ensuring that the installation rods 10 can be correctly positioned and fix the position of the sizing sleeve 6 through threaded connection. The installation rod 11 passes through the installation ring 11 inside the sizing sleeve 6 and is threadedly connected to the end face of the pipe extrusion head 5, playing a role in fixing the sizing sleeve 6. In this way, it can be ensured that the sizing sleeve 6 will not be displaced due to vibration or other factors during operation.

[0024] In a preferred embodiment, a spiral ring 601 is further provided inside the outer ring body of the sizing sleeve 6, and the outer ring of the spiral ring 601 is close to the inner wall of the outer ring of the sizing sleeve 6 with a distance left. This increases the fluidity of the cooling water, thereby improving the cooling effect. The spiral ring 601 is located inside the outer ring body of the sizing sleeve 6, and its outer ring is close to the inner wall of the outer ring of the sizing sleeve 6 but maintains a certain gap. The function of the spiral ring 601 is to guide the cooling water to flow along a spiral path, increasing the turbulence degree of the water flow, thereby improving the cooling efficiency. Through this design, the cooling water can form a spiral flow inside the sizing sleeve 6, increasing the contact area and time between the water and the inner wall of the outer ring of the sizing sleeve 6, and thus enhancing the cooling effect.

[0025] In a preferred embodiment, the water outlet pipe 8 is connected to the cooling tower 1, the cooling tower 1 is connected to the cold water pool 2, and a refrigeration device is provided inside the cold water pool 2. The water outlet pipe 8 is connected to the cooling tower 1, and the function of the cooling tower 1 is to further cool the hot water discharged from the sizing sleeve 6, and dissipate the heat into the atmosphere by means of air or spray water evaporation, etc., thereby reducing the water temperature. The cooling tower 1 is connected to the cold water pool 2, and a refrigeration device is provided inside the cold water pool 2. The refrigeration device is used to maintain the low temperature state of the cooling water in the cold water pool 2, ensuring that the cooling water can maintain effective cooling capacity during cyclic use.

[0026] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A pipe forming and sizing cooling device, characterized in that: A sizing sleeve (6) is provided on the end pipe extrusion head (5) of the extruder (4). The outer diameter of the sizing sleeve (6) is flush with the outer surface of the inner ring of the extrusion ring of the pipe extrusion head (5). The inside of the sizing sleeve (6) is a hollow structure, and the inside of the outer ring body of the sizing sleeve (6) is a closed structure. Two interfaces are symmetrically provided at the end of the outer ring body of the sizing sleeve (6), and the two interfaces are respectively communicated with the water outlet pipe (8) and the water inlet pipe (9). The water outlet pipe (8) is communicated with the cold water pool (2), and the cold water pool (2) is communicated with the water inlet pipe (9) through a water pump (3) to form a cycle.

2. The pipe forming and sizing cooling device according to claim 1, wherein: A raised positioning ring (501) is provided on the surface of the pipe extrusion head (5), and the end of the sizing sleeve (6) is sleeved on the positioning ring (501).

3. The pipe forming sizing and cooling device according to claim 1, characterized in that: An installation ring (11) is provided inside the tail end of the sizing sleeve (6), and a plurality of installation rods (10) pass through the installation ring (11) and are threadedly connected to the end face of the pipe extrusion head (5).

4. The pipe forming sizing and cooling device according to claim 1, characterized in that: A spiral ring (601) is further provided inside the outer ring body of the sizing sleeve (6), and the outer ring of the spiral ring (601) is close to the inner wall of the outer ring of the sizing sleeve (6) and there is a distance.

5. The pipe forming sizing and cooling device according to claim 1, characterized in that: The water outlet pipe (8) is communicated with the cooling tower (1), the cooling tower (1) is communicated with the cold water pool (2), and a refrigeration device is provided inside the cold water pool (2).

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