A blow molded article cooling device

Abstract

The utility model provides a kind of blow molding product cooling device, the blow molding product cooling technical field, including cooling bin, cooling bin is the hollow cylindrical structure of top end opening, still include: mould, spiral pipe, cooling liquid import, cooling liquid export and air cooling system, mould is set in cooling bin inner chamber middle part, for the water cooling temperature reduction of the blow molding product to be cooled in cooling bin;Spiral pipe is set in mould inner chamber, for the delivery of cooling liquid;Cooling liquid import is set in spiral pipe top end free end.The utility model adopts the double cooling system of water cooling and air cooling cooperation, can build efficient heat conduction channel from mould inside and outside, substantially speed up blow molding product cooling rate, effectively break through the efficiency bottleneck of single water cooling, especially can significantly shorten the cooling time of thick-walled blow molding product;The double cooling system is shortened by improving cooling efficiency Single product cooling cycle, make production rhythm adapt batch efficient operation demand, can be directly converted into capacity improvement, and can reduce unit product comprehensive cost.

Description

Technical Field

[0001] This utility model belongs to the field of blow-molded product cooling technology, specifically relating to a blow-molded product cooling device. Background Technology

[0002] In blow molding, after the plastic melt is extruded / injected to form a preform, it needs to be cooled rapidly to a temperature below the glass transition temperature to fix the shape of the product, improve dimensional accuracy, and avoid defects such as warping, dents, and uneven wall thickness caused by uneven cooling, thus ensuring the mechanical properties and appearance quality of the product.

[0003] To address the cooling problem of blow-molded products, a prior art patent (Chinese Patent No. CN222891631U) discloses a cooling device for blow-molded products, including a base with a cooling box containing a cooling assembly. The cooling assembly has several cooling through-holes and multiple sets of water injection pipes evenly spaced along the edge at the top. Each set of water injection pipes is connected to an atomizing pipe that penetrates the box wall and extends inwards, with several atomizing holes, each equipped with an atomizer. A fan is mounted on the back of the cooling box. The cooling assembly inside the cooling box initially cools the blow-molded product through the cooling through-holes. Cooling water is injected into the atomizing pipes through the water injection pipes, atomized by the atomizer, and discharged through the atomizing holes. The fan generates airflow that blows onto the product, resulting in more uniform cooling and improved molding quality. A lifting cylinder drives the cooling box to rise and fall, accommodating products of different heights and improving equipment applicability. A guide frame ensures the stability of the lifting base, preventing deviation or shaking. This invention has a simple structure, is easy to operate, and provides high and uniform cooling efficiency, improving molding quality and production efficiency, and has broad application prospects.

[0004] Currently, in blow molding processes, cooling of products is mostly achieved through a single water cooling method. This cooling mode has two main drawbacks. First, the heat exchange efficiency of single water cooling is limited by the cooling water flow rate, the heat exchange area of ​​the mold's water channels, and the water temperature gradient, making further improvements difficult. This results in a fixed cooling rate for the products, especially for blow-molded products with a wall thickness of 3mm or more, where cooling takes a long time. Second, in mass blow molding production scenarios, the extended cooling cycle for a single product directly slows down the production cycle. For example, for every second increase in cooling time per mold cycle, hourly output decreases by approximately 5%-8%, failing to meet the demands of efficient mass production. Ultimately, this forms an efficiency bottleneck in the production cooling process, restricting the release of production capacity and cost control for large-scale processing of blow-molded products. Utility Model Content

[0005] To address the limitations of existing water-cooling technologies, where heat exchange efficiency is restricted by cooling water flow rate, mold water channel heat exchange area, and water temperature gradient, resulting in a fixed cooling rate for the product, especially for blow-molded products with a wall thickness of 3mm or more, leading to prolonged cooling time, this invention provides a blow-molded product cooling device. This device employs a dual cooling system combining water and air cooling. Through the complementary synergy of these two cooling methods, the efficiency of heat absorption and dissipation from the blow-molded product per unit time is significantly improved, effectively accelerating the cooling rate. Particularly for thicker blow-molded products, the dual cooling system simultaneously constructs heat conduction channels from both the inner and outer sides of the mold cavity, significantly shortening the heat transfer path between the product and the mold body, thereby drastically reducing the overall cooling time and overcoming the efficiency bottleneck of single water cooling. The specific technical solution is as follows: A blow-molded product cooling device includes a cooling chamber, which is a hollow cylindrical structure with an open top. It further includes a mold, a spiral tube, a coolant inlet, a coolant outlet, and an air-cooling system. The mold is located in the center of the cooling chamber and is used for water cooling of the blow-molded product to be cooled within the cooling chamber. The spiral tube is located within the mold cavity and is used for transporting coolant. The coolant inlet is located at the free end of the spiral tube at the top. The coolant outlet is located at the free end of the spiral tube at the bottom. The air-cooling system is located within the cooling chamber and outside the mold. The spiral tube and the air-cooling system work sequentially to achieve a dual cooling system.

[0006] In the above technical solution, the mold includes an outer mold, an inner mold, and a cavity. The outer mold and the inner mold are both fixedly installed in the middle of the inner cavity of the cooling chamber. The outer mold is located outside the inner mold, and the outer mold and the inner mold are concentrically arranged. The outer mold and the inner mold form the cavity.

[0007] In the above technical solution, the spiral tube is disposed in the inner cavity of the cavity, and the spiral tube is arranged in a spiral shape from top to bottom.

[0008] In the above technical solution, the air-cooling system includes: a base, a fan, an air duct, a bracket, an annular pipe, and an air outlet. The base is fixedly installed on the side wall of the cooling chamber; the fan is mounted on the base; the air duct is connected to the fan; multiple sets of brackets are provided, and the multiple sets of brackets are respectively fixedly installed in the inner cavity of the cooling chamber; the annular pipe is installed on the bracket, and the annular pipe is concentric with the center of the cooling chamber; multiple sets of air outlets are provided, and the multiple sets of air outlets are equidistantly connected along the circumference of the annular pipe on the inner side of the annular pipe.

[0009] In the above technical solution, the air-cooling system further includes: mounting arms, wind deflectors, and holes. Multiple sets of mounting arms are provided, and one end of each set of mounting arms is fixedly installed on the air outlet. The wind deflector is fixedly installed on the other end of the mounting arms. Multiple sets of holes are provided, and each set of holes is opened through the side wall of the wind deflector.

[0010] In the above technical solution, the wind deflector is set in an arc shape, and its curvature is adapted to the outer side wall of the outer mold.

[0011] In the above technical solution, a mounting base is installed in the inner cavity of the cooling chamber, and a temperature sensor is installed at the mounting base. The detection end of the temperature sensor is in contact with the outer wall of the outer mold.

[0012] In the above technical solution, a controller is installed on the side wall of the base.

[0013] In the above technical solution, the controller is electrically connected to the fan and the temperature sensor respectively.

[0014] In the above technical solution, support legs are installed at the four corners of the bottom of the cooling chamber.

[0015] The present invention provides a cooling device for blow-molded products, which has the following advantages compared with the prior art: I. Addressing the limitations of a single water-cooling mode, namely its heat exchange efficiency being constrained by cooling water flow rate, mold water channel heat exchange area, and water temperature gradient, making further breakthroughs difficult and resulting in a fixed cooling rate for the product. This is especially problematic for blow-molded products with a wall thickness of 3mm or more, where heat is difficult to conduct quickly to the cavity wall and be carried away by the cooling water, ultimately leading to a significant increase in cooling time. This invention employs a dual cooling system that combines water cooling and air cooling. Through the complementary synergy of the two cooling methods, the efficiency of heat absorption and dissipation for blow-molded products is significantly improved per unit time, effectively accelerating the cooling rate. Particularly for thicker blow-molded products, the dual cooling system can simultaneously construct heat conduction channels from both the inside and outside of the mold cavity, significantly shortening the heat transfer path between the product and the mold body, thereby greatly reducing the overall cooling time and breaking through the efficiency bottleneck of single water cooling. II. In the context of mass blow molding production, the extended cooling cycle of a single product due to water cooling alone directly slows down the production cycle. Specifically, for every second increase in cooling time per mold cycle, hourly output decreases by approximately 5%-8%, making it difficult for production efficiency to match the demands of high-efficiency mass production. This ultimately creates a significant efficiency bottleneck in the cooling process, not only restricting the release of capacity for large-scale processing of blow-molded products but also increasing energy consumption and labor costs per unit due to the extended production cycle, thus affecting cost control. This invention employs a dual cooling system of water cooling and air cooling, which can shorten the cooling cycle of a single product through efficiency improvement, allowing the production cycle to adapt to the high-efficiency operation requirements of mass production. Compared to a simple water cooling mode, the improved cooling efficiency can be directly converted into increased production capacity, while the shortened production cycle reduces the overall cost per unit. Third, this utility model adopts a sequential cooling method of water cooling followed by air cooling. Based on the synergistic application of dual cooling, it constructs an efficient and orderly heat transfer path: First, with the help of the water cooling system, the heat generated by the blow-molded product during the molding process is quickly absorbed through the spiral tube. Then, the heat is transferred to the outer mold outside the mold through the conduction between the cavity and the spiral tube, completing the initial cooling of the product. This stage can quickly reduce the temperature of the product to the initial shaping range, avoiding shape instability caused by excessive temperature during the subsequent cooling process. Next, the airflow blown by the air cooling system quickly removes the heat from the surface of the outer mold, forming a complete and closed-loop heat transfer chain of "heat absorption by the cavity wall → heat conduction by the mold body → heat dissipation by air cooling of the outer wall". This transfer chain not only realizes the rapid transfer of heat, but also avoids mutual interference between the two cooling methods through sequential control, indirectly accelerating the cooling of the product, while ensuring the stability of the cooling process. IV. In this utility model, by combining air cooling applied to the outside of the mold with water cooling to achieve dual cooling, a technical path of indirect and uniform cooling is essentially constructed. This path structurally avoids the inherent defects of direct air cooling applied to the product. Direct air cooling is prone to uneven airflow distribution, which can cause a sudden drop in local temperature of the product, leading to internal stress concentration and ultimately causing appearance and structural defects such as warping and cracking. Indirect cooling, on the other hand, makes the heat transfer from the surface of the product to the inner mold, the inner wall of the outer mold, and then to the outside more uniform. The temperature difference between different areas of the mold is smaller, thus ensuring a stable drop in the surface temperature of the product and effectively avoiding quality problems caused by temperature fluctuations. V. In this utility model, the air outlet for air cooling is not directly aimed at the outer wall of the outer mold. Instead, the cold air is diverted and guided through a perforated baffle plate: part of the cold air acts directly on the outer wall of the outer mold through the holes in the baffle plate, achieving precise air cooling of the target area; the other part of the cold air is blown towards the side wall of the outer mold under the obstruction and guidance of the baffle plate. By changing the natural path of the cold air, the airflow can cover the corresponding area of ​​the outer mold side wall between two adjacent sets of baffle plates. This method, through the dual airflow distribution method of "direct action + path guidance", ensures that the cold air output from the air outlet can act on different areas of the outer wall of the outer mold through the gap between the holes and the two adjacent sets of baffle plates, forming a comprehensive air cooling of the outer wall of the outer mold. Compared with the single air cooling mode where the air outlet is directly aimed at the outer wall of the outer mold, this design effectively solves the problem of "airflow concentrated in a local area and cooling blind spots in adjacent areas" in traditional air cooling, making the air cooling intensity of each area of ​​the outer wall of the outer mold more balanced and the heat dissipation rate more consistent. VI. In this utility model, the timing of water cooling and air cooling can be coordinated by setting the mounting base and temperature sensor. In the early stage, only the water cooling system is turned on, and the spiral tube quickly absorbs the heat of the product, so that the product is quickly cooled down to the initial shaping temperature. At this time, the product has a basic shape and will not be significantly deformed due to subsequent cooling. After the temperature sensor detects that the temperature has reached the initial shaping temperature, the air cooling is started, which accelerates the heat dissipation of the mold by cooling the outer wall of the mold, so that the product temperature slowly drops to the demolding temperature. In summary, this utility model, firstly, employs a dual cooling system combining water cooling and air cooling, which constructs an efficient heat conduction channel from both the inside and outside of the mold, significantly accelerating the cooling rate of blow-molded products and effectively overcoming the efficiency bottleneck of single water cooling, especially significantly shortening the cooling time of thick-walled blow-molded products; secondly, this dual cooling system shortens the cooling cycle of a single product by improving cooling efficiency, allowing the production cycle to adapt to the needs of high-efficiency batch operation, which can directly translate into increased production capacity and reduced overall unit product costs; thirdly, through the sequential design of "water cooling first, then air cooling," a closed-loop heat transfer chain can be constructed, ensuring initial product shaping and avoiding shape instability while... Fourth, by using time-series control to avoid mutual interference between cooling methods, rapid heat transfer and stable cooling process are achieved; fifth, by using an indirect cooling path that acts on the outside of the mold, the temperature of each area of ​​the mold is uniform and the surface temperature of the product drops steadily, effectively avoiding defects such as sudden drops in local temperature, internal stress concentration and warping cracks that are easily caused by direct air cooling, thus ensuring product quality; sixth, by combining a perforated baffle plate to achieve cold air diversion and guidance, a full-coverage air cooling system can be formed on the outer wall of the mold, solving the problems of local concentration and cooling blind spots in traditional air cooling, making the air cooling intensity on the outer wall of the mold uniform and the heat loss consistent, further improving the cooling uniformity and overall cooling effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cooling chamber of this utility model; Figure 2 This is a top view of the annular tube of this utility model; Figure 3 This is a front view of the support leg of this utility model; Figure 4 This is a schematic diagram of the structure of the windbreak plate of this utility model; Figure 5 This is a schematic diagram of the structure of the outer mold of this utility model; Figures 1 to 5 In the middle, 1. Cooling chamber, 2. Outer mold, 3. Inner mold, 4. Cavity, 5. Spiral tube, 6. Coolant inlet, 7. Coolant outlet, 8. Base, 9. Fan, 10. Air duct, 11. Bracket, 12. Ring tube, 13. Air outlet, 14. Mounting arm, 15. Baffle plate, 16. Hole, 17. Controller, 18. Mounting base, 19. Temperature sensor, 20. Support leg. Detailed Implementation

[0017] The following are specific implementation cases and appendices. Figures 1 to 5 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0018] A blow-molded product cooling device includes a cooling chamber 1, which is a hollow cylindrical structure with an open top. Support legs 20 are installed at the four corners of the bottom of the cooling chamber 1 to lift it to the ground. It also includes a mold, a spiral tube 5, a coolant inlet 6, a coolant outlet 7, and an air-cooling system. The mold is located in the center of the cooling chamber 1 and is used for water cooling of the blow-molded product inside the cooling chamber 1. The spiral tube 5 is located inside the mold cavity for transporting coolant. The coolant inlet 6 is located at the free end of the spiral tube 5. The coolant outlet 7 is located at the free end of the spiral tube 5. The air-cooling system is located inside the cooling chamber 1 and outside the mold. The spiral tube 5 and the air-cooling system act sequentially, respectively, to achieve a dual cooling system.

[0019] This invention constructs a dual cooling system that combines water cooling and air cooling. Leveraging the complementary and synergistic effects of these two cooling methods, it significantly improves the efficiency of heat absorption and dissipation in blow-molded products per unit time, effectively accelerating the cooling rate. Especially for thick-walled blow-molded products, this dual cooling system can simultaneously establish bidirectional heat conduction channels from both the inside (water cooling) and outside (air cooling) of the mold cavity, greatly shortening the heat conduction path within the product and the transfer distance within the mold body. This significantly reduces the overall cooling time, successfully overcoming the efficiency limitations of a single water cooling mode.

[0020] This utility model features a dual cooling structure combining water and air cooling, which shortens the cooling cycle of a single blow-molded product by improving cooling efficiency, allowing the production cycle to match the high-efficiency operation requirements of mass production. Compared to a single water cooling mode, the improved cooling efficiency directly translates into increased production line capacity. Simultaneously, due to the shortened product production cycle, the energy consumption, labor, and equipment occupancy costs per unit are significantly reduced, effectively optimizing the overall product cost.

[0021] The mold includes an outer mold 2, an inner mold 3, and a cavity 4. The outer mold 2 and the inner mold 3 are both fixedly installed in the middle of the inner cavity of the cooling chamber 1. The outer mold 2 is located outside the inner mold 3, and the outer mold 2 and the inner mold 3 are concentrically arranged. The outer mold 2 and the inner mold 3 form the cavity 4. A spiral tube 5 is arranged in the inner cavity of the cavity 4, and the spiral tube 5 is spirally arranged from top to bottom.

[0022] This invention, through a structural design that combines air cooling applied to the outside of the mold with water cooling, achieves dual cooling operations, essentially establishing a technical path for indirect and uniform cooling. This path eliminates the inherent defects of direct air cooling applied to the product at the structural level—direct air cooling is prone to uneven airflow distribution, causing sudden drops in local temperature of the product, leading to internal stress concentration and ultimately resulting in appearance and structural problems such as warping and cracking; while the indirect cooling method makes the heat transfer process from the surface of the product to the inner wall of the inner mold 3 and the inner wall of the outer mold 2, and then to the outside more uniform, significantly reducing the temperature difference between different areas of the mold, thereby ensuring a stable drop in the surface temperature of the product and effectively avoiding various quality hazards caused by temperature fluctuations.

[0023] This invention employs a sequential cooling design of "water cooling followed by air cooling," constructing an efficient and orderly heat transfer path while achieving synergistic operation of dual cooling systems. First, the water cooling system takes the lead, rapidly absorbing the heat generated during blow molding through the spiral tube 5. Then, the heat is transferred to the outer mold 2 via the coordinated conduction of the cavity 4 and the spiral tube 5, completing the initial cooling of the product. This stage rapidly reduces the product temperature to the initial shaping range, fundamentally preventing shape instability caused by excessively high temperatures during subsequent cooling. Next, the air cooling system activates, quickly removing heat from the surface of the outer mold 2 through airflow, ultimately forming a complete closed-loop heat transfer chain: "heat absorption by the cavity wall → heat conduction by the mold body → air cooling dissipation from the outer wall." This transfer chain not only achieves efficient and rapid heat transfer but also completely avoids mutual interference between the two cooling methods through sequential control, indirectly accelerating the product cooling rate while fully ensuring the stability and reliability of the cooling process.

[0024] The air-cooled system includes: a base 8, a fan 9, an air duct 10, a bracket 11, an annular pipe 12, and an air outlet 13. The base 8 is fixedly installed on the side wall of the cooling chamber 1. The fan 9 is mounted on the base 8. The fan 9 is a commercially available fan capable of delivering cold air, which can be connected to an existing external cold air generator to guide the cold air to the air duct 10 and the air outlet 13. Both the fan 9 and the external cold air generator are existing equipment that can meet the usage requirements; their parameters are not described or limited here. The air duct 10 is connected to the fan 9. Multiple sets of brackets 11 are provided, and each set of brackets 11 is fixedly installed inside the cooling chamber 1. The annular pipe 12 is installed on the bracket 11, and the annular pipe 12 is concentric with the center of the cooling chamber 1. Multiple sets of air outlets 13 are provided, and the multiple sets of air outlets 13 are equidistantly connected along the circumference of the annular pipe 12 inside the annular pipe 12. The air-cooled system also includes: mounting arms 14, wind deflectors 15, and holes 16. Multiple sets of mounting arms 14 are provided, and one end of each set of mounting arms 14 is fixedly installed on the air outlet 13. The wind deflectors 15 are fixedly installed on the other end of the mounting arms 14. Multiple sets of holes 16 are provided, and each set of holes 16 is opened through the side wall of the wind deflectors 15.

[0025] In this invention, the air outlet 13 for air cooling is not directly aligned with the outer wall of the outer mold 2. Instead, it utilizes a baffle plate 15 with holes 16 to divert and guide the cold air: a portion of the cold air acts directly on the outer wall of the outer mold 2 through the holes 16 on the baffle plate 15, achieving precise air cooling of the target area; the other portion of the cold air is blocked and guided by the baffle plate 15 and blown towards the side wall of the outer mold 2. By changing the natural flow path of the cold air, the airflow can cover the corresponding side wall area of ​​the outer mold 2 between two adjacent sets of baffle plates 15. This dual airflow distribution method of "direct action + path guidance" ensures that the cold air output from the air outlet 13 acts on different areas of the outer wall of the outer mold 2 through the gaps between the holes 16 and the two adjacent sets of baffle plates 15, forming a comprehensive air cooling coverage of the outer wall of the outer mold 2. Compared to the single air-cooling mode where the air outlet 13 is directly aimed at the outer wall of the outer mold 2, this design effectively solves the problem of "airflow concentrated in a local area and cooling blind spots in adjacent areas" in traditional air cooling, making the air cooling intensity of each area of ​​the outer wall of the outer mold 2 more balanced and the heat dissipation rate more consistent.

[0026] The wind deflector 15 is set in an arc shape, and its curvature is adapted to the outer side wall of the outer mold 2 to ensure that the two adjacent sets of wind deflectors 15 can form an adaptation angle adapted to the curvature of the outer side wall of the outer mold 2, so that another part of the cold air can pass smoothly through the space of the two adjacent sets of wind deflectors 15 and act directly on the wind deflector 15.

[0027] A mounting base 18 is installed inside the cooling chamber 1, and a temperature sensor 19 is installed at the mounting base 18. The sensing end of the temperature sensor 19 is in contact with the outer wall of the outer mold 2. The temperature sensor 19 is a commercially available general-purpose temperature sensor. It contacts the outer wall of the outer mold 2, senses the temperature of the outer wall of the outer mold 2, and transmits the data to the controller 17 for processing. The controller 17 then controls the subsequent air cooling system to start. The temperature sensor 19 and the controller 17 are electrically connected. The temperature sensor 19 only needs to meet the usage requirements, and its model is not limited or described in detail here. This invention, by setting up the mounting base 18 and the temperature sensor 19, can achieve precise coordination of the timing of water cooling and air cooling: in the initial cooling stage, only the water cooling system is activated, and the spiral tube 5 quickly absorbs the heat of the blow-molded product, pushing the product temperature down rapidly to the preliminary shaping temperature—at this stage, the product has formed a stable basic shape, which can avoid significant deformation during subsequent cooling; when the temperature sensor 19 detects that the product temperature has reached the preliminary shaping temperature, the air cooling system is immediately triggered to start, which accelerates the overall heat dissipation of the mold by cooling the outer wall of the mold, so that the product temperature slowly drops to the temperature that meets the demolding requirements, ensuring the stability of the product's size and shape after demolding.

[0028] A controller 17 is mounted on the side wall of the base 8. The controller 17 is electrically connected to the fan 9 and the temperature sensor 19. The controller 17 is a commonly used existing device, whose core consists of a central processing unit (CPU), memory, input / output modules, and communication interface. It performs three-stage tasks—input sampling, program calculation, and output refresh—through a cyclic scanning mechanism. Initially developed to meet the needs of General Motors in the United States to replace relay control systems, it later integrated microprocessor technology to achieve functions such as logic control, timing control, and analog signal processing. It can control the transmission or processing of instructions such as the opening and closing information processing of various electrical components in this application. It adopts an existing general-purpose model that meets the above-mentioned usage requirements, and will not be described or limited here.

[0029] The working principle of the blow-molded product cooling device in this embodiment is as follows: After the blow-molded product to be cooled is placed in the inner cavity of the inner mold 3, coolant is introduced into the spiral tube 5 through the coolant inlet 6. The spiral tube 5 cools the blow-molded product in the cavity through heat exchange with the inner mold 3. During this process, the heat of the product is transferred outward to the outer wall of the outer mold 2 through heat conduction. When the temperature sensor 19 detects that the temperature of the outer wall of the outer mold 2 has dropped to the preliminary shaping temperature, it immediately transmits the temperature signal to the controller 17. The controller 17 then controls the fan 9 to start, so that the cold air is delivered to the annular tube 12 through the air duct 10. The cold air from 12 is sprayed through the multi-angle distributed air outlets 13 onto the side wall of the corresponding baffle plate 15. Part of the cold air passes through the holes 16 on the baffle plate 15 and acts directly on the outer side wall of the outer mold 2 to dissipate heat and cool down. The other part of the cold air flows along the side wall of the baffle plate 15 and enters the gap between two adjacent sets of baffle plates 15, indirectly acting on the side wall of the outer mold 2 to achieve cooling. This cooling process, through the diversion and uniform coverage of air cooling, can effectively avoid the internal stress generated by the sudden drop in local temperature of the blow-molded product, thereby preventing structural and appearance defects such as warping and cracking of the product. In this invention, a dual cooling system combining water cooling and air cooling is used to construct efficient heat conduction channels from both the inside and outside of the mold, significantly accelerating the cooling of the product and breaking through the bottleneck of single water cooling, especially shortening the cooling time of thick-walled products. This system shortens the cooling cycle of a single product, adapts to the batch production cycle, directly increases production capacity and reduces unit costs. The "water cooling first, then air cooling" sequence design constructs a closed-loop heat transfer chain, ensuring the initial shaping and cooling stability of the product and avoiding interference between methods. The indirect path of air cooling acting on the outside of the mold ensures that the temperature of the mold and the product drops uniformly, avoiding local sudden drops, internal stress and warping cracks, and ensuring quality. Combined with the baffle plate 15 with holes 16, cold air is diverted and fully covers the outer wall of the mold, solving the problems of local concentration and blind spots in traditional air cooling, and improving the cooling uniformity and overall effect.

[0030] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0031] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0032] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0033] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0034] Unless otherwise stated, the term "multiple" means two or more.

[0035] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0036] The term "and / or" describes the relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or A and B.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cooling device for blow-molded products, comprising a cooling chamber (1), wherein the cooling chamber (1) is a hollow cylindrical structure with an open top, characterized in that: Also includes: The mold is located in the middle of the inner cavity of the cooling chamber (1) and is used for water cooling of the blow-molded product to be cooled in the cooling chamber (1); Spiral tube (5), which is disposed in the inner cavity of the mold and is used for the delivery of coolant; Coolant inlet (6), the coolant inlet (6) is located at the free end of the top of the spiral tube (5); Coolant outlet (7), the coolant outlet (7) is located at the free end of the bottom of the spiral tube (5); An air-cooling system is provided in the inner cavity of the cooling chamber (1) and located outside the mold; The spiral tube (5) and the air-cooling system work in opposite directions to achieve a dual cooling system.

2. The blow-molded product cooling device according to claim 1, characterized in that: The mold includes: The outer mold (2) and the inner mold (3) are fixedly installed in the middle of the inner cavity of the cooling chamber (1). The outer mold (2) is located outside the inner mold (3), and the outer mold (2) and the inner mold (3) are concentrically arranged. The cavity (4) is formed by the outer mold (2) and the inner mold (3).

3. A blow-molded product cooling device according to claim 2, characterized in that: The spiral tube (5) is disposed in the inner cavity of the cavity (4), and the spiral tube (5) is arranged in a spiral shape from top to bottom.

4. A blow-molded product cooling device according to claim 2, characterized in that: The air-cooling system includes: The base (8) is fixedly installed on the side wall of the cooling chamber (1); A fan (9) is mounted on the base (8); Air supply pipe (10), which is connected to the fan (9); The bracket (11) is provided in multiple sets, and the multiple sets of brackets (11) are respectively fixedly installed in the inner cavity of the cooling chamber (1); A ring tube (12) is mounted on the bracket (11) and the ring tube (12) is concentric with the center of the cooling chamber (1); Air outlet (13), the air outlet (13) is provided in multiple sets, the multiple sets of air outlet (13) are equidistantly connected along the circumference of the annular pipe (12) and are located inside the annular pipe (12).

5. A blow-molded product cooling device according to claim 4, characterized in that: The air-cooling system also includes: Mounting arms (14) are provided in multiple sets, and one end of each set of mounting arms (14) is fixedly mounted on the air outlet (13). Wind deflector (15), the wind deflector (15) is fixedly installed at the other end of the mounting arm (14); Holes (16) are provided in multiple sets, and the multiple sets of holes (16) are respectively opened through the side wall of the windbreak plate (15).

6. A blow-molded product cooling device according to claim 5, characterized in that: The wind deflector (15) is set in an arc shape, and its curvature is adapted to the outer side wall of the outer mold (2).

7. A blow-molded product cooling device according to claim 4, characterized in that: The cooling chamber (1) is equipped with a mounting base (18), and a temperature sensor (19) is installed at the mounting base (18). The detection end of the temperature sensor (19) is in contact with the outer wall of the outer mold (2).

8. A blow-molded product cooling device according to claim 7, characterized in that: The controller (17) is installed on the side wall of the base (8).

9. A blow-molded product cooling device according to claim 8, characterized in that: The controller (17) is electrically connected to the fan (9) and the temperature sensor (19) respectively.

10. A cooling device for blow-molded products according to claim 1, characterized in that: The cooling chamber (1) is equipped with four support legs (20) at the bottom corners.

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