Rapid cooling tank for extruded plastic strip

By using a built-in cooling tank structure and non-contact cooling technology, the problem of reduced cooling performance of plastic cooling devices in high-temperature environments has been solved, achieving efficient and uniform cooling of plastic strips and ensuring the dimensional stability and surface quality of plastic profiles.

CN224240325UActive Publication Date: 2026-05-15ANHUI CHANGYING PLASTIC IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANHUI CHANGYING PLASTIC IND CO LTD
Filing Date
2025-06-17
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing plastic cooling devices suffer from reduced cooling performance at high temperatures, leading to dimensional instability and surface defects in plastic profiles. In particular, sensitive materials may experience a decline in mechanical properties during liquid cooling.

Method used

It adopts a built-in cooling tank structure, combined with a water film layer and a drying component, to achieve non-contact cooling and dual-layer cooling. The water film layer wraps around the plastic strip for uniform cooling, and the drying component quickly removes water stains, avoiding local temperature differences and water absorption deformation.

Benefits of technology

It improves cooling efficiency, reduces internal stress and deformation of plastic profiles, and ensures the dimensional stability and surface quality of plastic strips, especially the mechanical properties of sensitive materials.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a rapid cooling tank for extruded plastic strips, which relates to the technical field of plastic production and comprises a cooling tank body, a support frame fixedly arranged at the bottom, a liquid guide component fixedly connected in the support frame, a cooling component fixedly connected in the cooling tank body, and a cooling unit butted in the cooling tank body and communicated with the cooling component, the air drying assembly is fixedly connected to the side surface of the cooling tank body and is butted and communicated with the cooling unit; the cooling unit is in butt joint with a cooling cylinder in the cooling tank body and is fixedly connected with a water film layer in the cooling cylinder; the material guiding shell is fixedly connected into the cooling tank body, the liquid guiding square rod is in butt joint with the interior of the material guiding shell, and the spraying nozzles are evenly distributed and communicate with the bottom of the liquid guiding square rod. According to the utility model, the cooling tank body forms a full cooling layer, so that the cooling operation of an internal cooling structure is realized, and the endurance performance of the tank body is ensured through double-layer cooling; and non-contact cooling operation is adopted, and plastic strips are uniformly wrapped, so that internal stress and deformation caused by local temperature difference are reduced.
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Description

Technical Field

[0001] This utility model relates to the field of plastic production technology, specifically a rapid cooling tank for extruded plastic strips. Background Technology

[0002] In the field of plastics processing, extrusion molding is an efficient and continuous manufacturing process that is widely used in the production of plastic strips, pipes, sheets and films with fixed cross-sectional shapes. The process usually includes the following steps: heating and melting plastic raw materials (granules or powder), pushing them to a die (orifice) of a specific shape through screw rotation for extrusion, and then cooling and shaping them to form continuous profiles.

[0003] The cooling process has a decisive impact on the dimensional stability, surface quality, and mechanical properties of the final product. Currently, common cooling methods include water cooling (immersion or spray) and air cooling, with water cooling being widely used due to its high efficiency and uniformity.

[0004] However, existing cooling facilities still have the following problems in application:

[0005] 1. Under high external temperatures, the heat dissipation capacity of the cooling medium inside the tank will decrease, resulting in a reduction in the cooling performance of the cooling tank, which in turn affects the cooling effect of the plastic profile and may cause dimensional deviations or surface defects.

[0006] 2. For some sensitive plastic materials, such as ABS and PC, dimensional instability or mechanical property degradation may occur during long-term liquid cooling due to thermal stress or changes in water absorption.

[0007] Therefore, an improved cooling device for plastic strips is needed. Utility Model Content

[0008] The purpose of this invention is to provide a rapid cooling tank for extruded plastic strips to solve the problems mentioned in the prior art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a rapid cooling tank for extruded plastic strips, comprising: a cooling tank body, a support frame fixed to the bottom, a liquid guiding component fixed to the support frame, a cooling component fixed to the interior of the cooling tank body, a cooling unit connected to the cooling tank body and communicating with the cooling component, and a drying component fixed to the side of the cooling tank body and communicating with the cooling unit; the cooling unit, connected to a cooling cylinder within the cooling tank body, and a water film layer fixed to the cooling cylinder; the cooling component, a material guiding shell fixed to the cooling tank body, a liquid guiding square rod connected to the material guiding shell, spray nozzles evenly distributed and connected to the bottom of the liquid guiding square rod, and an inlet pipe connected to the material guiding shell and the liquid guiding component; the liquid guiding component, connected to the water film layer and the liquid guiding square rod respectively via a pipe assembly.

[0010] As a preferred embodiment, a connecting joint 1 is installed at the top of the cooling tank, and a connecting joint 2 is installed at the bottom of the cooling tank.

[0011] As a preferred embodiment, the air-drying assembly includes a mounting cover, a fan, an air guide tube, and an air nozzle. A mounting cover is fixedly installed on one side of the cooling tank and communicates with it. An air guide tube is fixedly installed inside the mounting cover, and an air nozzle communicating with the interior is fixedly installed at the front end of the air guide tube. A fan communicating with the interior of the air guide tube is fixedly installed on the top of the mounting cover.

[0012] As a preferred embodiment, the pipe assembly is composed of a first liquid outlet pipe, a liquid pump, a three-way pipe, a delivery pipe, a second liquid inlet pipe, and a second liquid outlet pipe. The top of the liquid storage chamber is connected to the first liquid outlet pipe and the second liquid outlet pipe. The first liquid outlet pipe is connected to the water film layer, and the second liquid outlet pipe is connected to the liquid guide rod. The liquid pump is fixed inside the liquid storage chamber. The output end of the liquid pump is connected to the three-way pipe. The other two ends of the three-way pipe are connected to the delivery pipe and the second liquid inlet pipe. The delivery pipe is installed and connected to the liquid guide rod, and the second liquid inlet pipe is connected to the water film layer.

[0013] As a preferred embodiment, the top of the material guide shell is fixedly installed with a mounting bracket that is connected to the cooling tank, and the top of the material guide shell is connected to an inlet pipe that communicates with the liquid guide rod. The other end of the inlet pipe is connected to the delivery pipe.

[0014] Preferably, an extrusion die for extrusion is disposed on the outside of the cooling tank, and the output end of the extrusion die extends into the cooling tank and is connected to the cooling component.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The cooling structure is built into the cooling tank, and cooling water can be injected into the cooling tank during the cooling process to form a full cooling layer, thereby cooling the internal cooling structure. The dual-layer cooling ensures the tank's endurance.

[0017] The cooling unit employs a non-contact cooling process, utilizing the uniform wrapping of plastic strips to reduce internal stress and deformation caused by localized temperature differences. This also reduces water absorption deformation that may occur when some sensitive materials come into contact with water, and the film isolation can significantly block this problem. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal assembly structure of the extruded plastic strip rapid cooling tank of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the extruded plastic strip rapid cooling tank of this utility model;

[0020] Figure 3 This is a schematic diagram of the liquid guiding component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cooling unit structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the air-drying component structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the cooling component structure of this utility model.

[0024] Figure label:

[0025] 100. Cooling tank body; 101. Support frame;

[0026] 200. Air drying assembly; 201. Mounting cover; 202. Fan; 203. Air duct; 204. Air nozzle;

[0027] 300. Cooling unit; 301. Cooling cylinder; 302. Water film layer;

[0028] 400. Cooling component; 401. Material guide shell; 402. Mounting bracket; 403. Liquid guide square rod; 404. Liquid inlet pipe one; 405. Spray nozzle;

[0029] 500. Liquid guiding assembly; 501. Liquid storage chamber; 502. Downflow pipe one; 503. Liquid pump; 504. T-connector; 505. Delivery pipe; 506. Inlet pipe two; 507. Downflow pipe two;

[0030] 600. Extrusion die. Detailed Implementation

[0031] 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.

[0032] Example: This utility model provides a technical solution for a rapid cooling tank for extruded plastic strips, such as... Figures 1-6 As shown, it includes: a cooling tank 100, a support frame 101 fixed to the bottom, a liquid guiding assembly 500 fixed to the support frame 101, a cooling assembly 400 fixed to the inside of the cooling tank 100, a cooling unit 300 connected to the inside of the cooling tank 100 and installed and communicated with the cooling assembly 400, and a drying assembly 200 fixed to the side of the cooling tank 100 and connected to the cooling unit 300.

[0033] In the above scheme:

[0034] The cooling structure is installed inside the cooling tank 100. During the cooling process, cooling water can be injected into the cooling tank 100 to form a full cooling layer, thereby cooling the internal cooling structure. The dual-layer cooling ensures the tank's endurance.

[0035] The liquid guiding component 500 enables the circulating supply of liquid to the cooling structure, and can provide a continuous cooling effect for the tank through its own storage effect;

[0036] The cooling unit 300 employs a non-contact cooling operation, which reduces internal stress and deformation caused by local temperature differences by uniformly wrapping the plastic strip. It also reduces water absorption deformation that may occur when some sensitive materials come into contact with water, and the film isolation can significantly block this problem.

[0037] The cooling component 400 sprays water onto the extruded plastic strip, rapidly cooling and curing the plastic strip without soaking.

[0038] The air-drying component 200 can quickly dry the residual water stains on the plastic strip. Since the front-end cooling process is not soaked too much, the overall air-drying process is also faster.

[0039] The cooling unit 300 is connected to the cooling cylinder 301 inside the cooling tank 100, and the water film layer 302 inside the cooling cylinder 301 is fixed.

[0040] The cooling component 400 includes a material guide shell 401 fixed in the cooling tank 100, a liquid guide rod 403 connected to the material guide shell 401, spray nozzles 405 evenly distributed and connected to the bottom of the liquid guide rod 403, and an inlet pipe 404 connected to the material guide shell 401 and the liquid guide component 500.

[0041] The liquid guiding assembly 500 is connected to the liquid storage chamber 501 of the water film layer 302 and the liquid guiding square rod 403 respectively through the pipe assembly.

[0042] During daily operations:

[0043] The plastic strip extruded by the extrusion equipment enters the cooling tank. At this time, the liquid supply facility in the liquid storage chamber 501 supplies liquid to the liquid inlet pipe 404 in the guide shell 401. The coolant then enters the guide rod 403 and cools the plastic strip below through the spray nozzle 405 at the bottom of the guide rod 403. This causes the plastic strip to cool and solidify rapidly in a short time. The solidified plastic strip then enters the water film layer 302 in the cooling cylinder 301. The water film layer 302 installed in the cooling cylinder 301 is also sleeve-shaped. During this process, coolant is filled into the water film layer 302, which then cools and wraps the plastic strip. This allows for the cooling of the plastic strip without contact.

[0044] like Figures 1-6 As shown, in order to create a cooling environment inside the cooling tank 100, a connecting connector 1 is further installed at the top of the cooling tank 100, and a connecting connector 2 is installed at the bottom of the cooling tank 100.

[0045] Specifically, during the process, personnel can inject cooling water into the cooling tank 100 through the connector one to cool the internal cooling structure. The double-layer cooling ensures the tank's continuous performance. After the cooling cycle is completed, the water can be discharged through the connector two.

[0046] To enable the cooling tank to quickly complete the air drying operation of the cooling plastic strips, the air drying assembly 200 further includes a mounting cover 201, a fan 202, an air guide tube 203, and an air nozzle 204. The mounting cover 201 is fixedly installed on one side of the cooling tank 100, and the air guide tube 203 is fixedly installed inside the mounting cover 201. The air nozzle 204, which communicates with the interior, is fixedly installed at the front end of the air guide tube 203. The fan 202, which communicates with the interior of the air guide tube 203, is fixedly installed on the top of the mounting cover 201.

[0047] Specifically, during this process, the blower 202 is started to inject air into the air guide cylinder 203 under negative pressure. The air guide cylinder 203 has a double-layer structure, which ensures both the delivery of the plastic strip and the injection of air. At that time, the air can be blown away quickly through the air nozzle 204 to remove water stains from the surface of the plastic strip.

[0048] like Figures 1-6As shown, in order to ensure that the cooling water inside the liquid storage chamber 501 can be smoothly guided and circulated, the pipe assembly is further composed of a first liquid pipe 502, a liquid pump 503, a three-way pipe 504, a delivery pipe 505, a second liquid inlet pipe 506, and a second liquid pipe 507. The top of the liquid storage chamber 501 is connected to the first liquid pipe 502 and the second liquid pipe 507. The first liquid pipe 502 is connected to the water film layer 302, and the second liquid pipe 507 is connected to the liquid guiding rod 403. The liquid pump 503 is fixed inside the liquid storage chamber 501. The output end of the liquid pump 503 is connected to the three-way pipe 504. The other two ends of the three-way pipe 504 are connected to the delivery pipe 505 and the second liquid inlet pipe 506, respectively. The delivery pipe 505 is connected to the liquid guiding rod 403, and the second liquid inlet pipe 506 is connected to the water film layer 302.

[0049] Specifically, during this period, the liquid pump 503 is started, and liquid is supplied to the delivery pipe 505 and the second liquid inlet pipe 506 through the three-way pipe 504; it is worth noting that the liquid is delivered to the water film layer 302 through the second liquid inlet pipe 506 in a staged delivery manner; while the liquid guide rod 403 is delivered continuously.

[0050] After the water film layer 302 is cooled by liquid transfer, the cooled water can be discharged through the liquid outlet pipe 502.

[0051] After the liquid guide rod 403 is cooled by liquid transfer, the cooling water can be discharged through the lower liquid pipe 507 and flow into the liquid storage chamber 501.

[0052] Solenoid valves for switching control are installed on the lower liquid pipe 502, the three-way pipe 504, and the second liquid inlet pipe 506 to control the flow process of the above-mentioned pipes. The electrical components on the tank are connected to the control system in the production workshop through wires, which facilitates unified control by personnel.

[0053] To enable stable hoisting of the material guide shell 401, a mounting bracket 402 that is fixedly installed on the top of the material guide shell 401 and connected to the cooling tank 100 is further provided. An inlet pipe 404 that is connected to the liquid guide rod 403 is also installed on the top of the material guide shell 401. The other end of the inlet pipe 404 is connected to the delivery pipe 505.

[0054] Specifically, the mounting bracket 402 enables the hoisting of the guide shell 401, which in turn fixes the guide shell 401 to the top inside the guide shell 401; and when the conveying pipe 505 is conveying, it can be fed into the inlet pipe 404 and then into the guide rod 403.

[0055] Furthermore, an extrusion die 600 for extrusion is disposed on the outside of the cooling tank 100, and the output end of the extrusion die 600 extends into the cooling tank 100 and is connected to the cooling component 400. In this way, the plastic strip extruded by the extrusion die 600 can enter the cooling component 400 for cooling, while the cooling water in the cooling tank 100 does not come into contact with the plastic strip.

[0056] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rapid cooling tank for extruded plastic strips, characterized in that, include: The cooling tank (100) includes a support frame (101) fixed at the bottom, a liquid guiding component (500) fixed in the support frame (101), a cooling component (400) fixed inside the cooling tank (100), a cooling unit (300) connected to the cooling unit (100) and communicating with the cooling component (400), and a drying component (200) fixed to the side of the cooling tank (100) and communicating with the cooling unit (300). The cooling unit (300) is connected to the cooling cylinder (301) inside the cooling tank (100) and fixed to the water film layer (302) inside the cooling cylinder (301). The cooling component (400) has a material guide shell (401) fixed in the cooling tank (100), a liquid guide rod (403) connected to the material guide shell (401), spray nozzles (405) evenly distributed and connected to the bottom of the liquid guide rod (403), and an inlet pipe (404) connected to the material guide shell (401) and the liquid guide component (500). The liquid guiding assembly (500) is connected to the liquid storage chamber (501) of the water film layer (302) and the liquid guiding square rod (403) respectively through the pipe assembly.

2. The rapid cooling tank for extruded plastic strips according to claim 1, characterized in that: The top of the cooling tank (100) is fitted with a connecting joint 1, and the bottom of the cooling tank (100) is fitted with a connecting joint 2.

3. The rapid cooling tank for extruded plastic strips according to claim 2, characterized in that: The air-drying assembly (200) includes a mounting cover (201), a fan (202), an air guide tube (203), and an air nozzle (204). The mounting cover (201) is fixedly installed on one side of the cooling tank (100), and the air guide tube (203) is fixedly installed inside the mounting cover (201). An air nozzle (204) communicating with the interior is fixedly installed at the front end of the air guide tube (203). The fan (202) communicating with the interior of the air guide tube (203) is fixedly installed on the top of the mounting cover (201).

4. The rapid cooling tank for extruded plastic strips according to claim 3, characterized in that: The pipe assembly is composed of a first liquid pipe (502), a liquid pump (503), a three-way pipe (504), a delivery pipe (505), a second liquid inlet pipe (506), and a second liquid pipe (507). The top of the storage chamber (501) is connected to the first liquid pipe (502) and the second liquid pipe (507). The first liquid pipe (502) is connected to the water film layer (302), and the second liquid pipe (507) is connected to the liquid guide rod (403). The liquid pump (503) is fixed inside the storage chamber (501). The output end of the liquid pump (503) is connected to the three-way pipe (504). The other two ends of the three-way pipe (504) are connected to the delivery pipe (505) and the second liquid inlet pipe (506), respectively. The delivery pipe (505) is connected to the liquid guide rod (403), and the second liquid inlet pipe (506) is connected to the water film layer (302).

5. The rapid cooling tank for extruded plastic strips according to claim 4, characterized in that: The top of the material guide shell (401) is fixedly installed with a mounting bracket (402) that is connected to the cooling tank (100). The top of the material guide shell (401) is connected with an inlet pipe (404) that is connected to the liquid guide rod (403). The other end of the inlet pipe (404) is connected to the delivery pipe (505).

6. The rapid cooling tank for extruded plastic strips according to claim 5, characterized in that: An extrusion die (600) for extrusion is disposed on the outside of the cooling tank (100), and the output end of the extrusion die (600) extends into the cooling tank (100) and is connected to the cooling component (400).