Cooling assembly of full-automatic film blowing machine

Abstract

The utility model relates to the technical field of cooling assemblies, in particular to a full-automatic film blowing machine cooling assembly which comprises a die head of a film blowing machine and an air ring installed on the die head and used for preliminarily cooling film bubbles, the air ring comprises a plurality of identical sub-rings, and an adjusting ring is rotationally arranged on the inner wall of each sub-ring. The flow of cold air passing through the second through holes can be accurately controlled, so that fine adjustment of the cooling effect is achieved, the thin film cooling device can adapt to the production requirements of thin films of different types and thicknesses, the cooling flexibility and efficiency are improved, a plurality of adjusting rods with adjustable intervals are arranged between every two adjacent sub-rings in an annular array mode, and the cooling efficiency is improved. The contact time of cold air and the film bubbles is flexibly adjusted, the cooling ring used for further cooling the film bubbles is arranged at the top of the air ring in a magnetic attraction mode, the cooling cavity formed in the cooling ring is filled with graphene, heat transmitted from the film bubbles can be rapidly absorbed and taken away, the cooling efficiency is improved, and the film cooling time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of cooling and heat-reducing components, and in particular to a cooling and heat-reducing component for a fully automatic blown film machine. Background Technology

[0002] A blown film machine is a device that heats and melts plastic particles before blowing them into a thin film. During the blowing process, the molten plastic is evenly distributed through a die and forms an expanding film bubble. To ensure the quality and performance of the film, it must be cooled rapidly and uniformly. Traditional cooling methods often suffer from uneven cooling and poor cooling effect, which affects the dimensional accuracy and surface quality of the final product. Therefore, developing efficient and flexible cooling components has become an important direction for the technological upgrading of blown film machines.

[0003] Traditional cooling methods are often only suitable for the production of films of specific types or thicknesses. For films of different types or thicknesses, cooling parameters need to be adjusted or cooling equipment needs to be replaced, which increases production costs and operational complexity.

[0004] When blowing film machines produce films of different types or thicknesses, they may encounter problems such as poor adaptability of cooling components or inconvenient adjustment operations. In view of this, a fully automatic blowing film machine cooling component is provided. Utility Model Content

[0005] The main purpose of this utility model is to provide a cooling and heat-reducing component for a fully automatic blown film machine, in order to solve the problems mentioned in the related technology where the cooling and heat-reducing component has poor adaptability or is inconvenient to adjust when the blown film machine is producing films of different types or thicknesses. Therefore, a cooling and heat-reducing component for a fully automatic blown film machine is provided.

[0006] To achieve the above objectives, according to one aspect of the present invention, a cooling and heat-reducing component for a fully automatic blown film machine is provided, comprising a die head of the blown film machine and an air ring mounted on the die head for initial cooling of the film bubble. The air ring comprises several identical sub-rings, and each sub-ring has an adjusting ring rotatably disposed on its inner wall for adjusting the airflow. Several adjustable rods with adjustable spacing are arranged in a ring array between two adjacent sub-rings. A cooling ring for further cooling of the film bubble is magnetically disposed on the top of the air ring.

[0007] Furthermore, the segmented ring includes a first segmented ring fixedly connected to the outer wall of the mold head, a second segmented ring is disposed above the first segmented ring, a third segmented ring is disposed above the second segmented ring, and the lower surface of the cooling ring is magnetically connected to the upper surface of the third segmented ring.

[0008] Furthermore, a cavity for circulating cold air is provided inside the first sub-ring, and a first air outlet is provided on the inner wall of the first sub-ring. The first air outlet is inclined upward, and a second air outlet is also provided on the inner wall of the first sub-ring. The second air outlet is located below the first air outlet, and both the first air outlet and the second air outlet are connected to the cavity.

[0009] Furthermore, two annular grooves are formed on the inner wall of the first sub-ring, and several limiting grooves are formed in a circular array at the upper and lower ends of the annular grooves. The annular grooves are located at the upper and lower ends of the second air outlet.

[0010] Furthermore, a plurality of first through holes and second through holes are provided in a ring array through the sidewall of the adjustment ring, and each second through hole is located between two adjacent first through holes. The diameter of the first through hole is the same as that of the second air outlet, and the diameter of the first through hole is larger than that of the second through hole.

[0011] Furthermore, the outer wall of the adjusting ring is symmetrically provided with connecting rings on the upper and lower sides, and the upper and lower ends of the connecting ring are symmetrically provided with limiting protrusions. The connecting ring is rotatably installed in the ring groove, and the limiting protrusions are engaged in the limiting groove.

[0012] Furthermore, the adjusting rod includes a first fixing rod fixedly connected to the second sub-ring. The lower end of the first fixing rod is threaded with a screw, and the lower end of the screw is threaded with a second fixing rod fixedly connected to the first sub-ring. The two ends of the screw are reverse threads. Similarly, an adjusting rod is provided between the second sub-ring and the third sub-ring.

[0013] Furthermore, a spiral cooling cavity is formed inside the cooling ring, and a plurality of column holes are formed on the inner wall of the cooling ring, the column holes communicating with the cooling cavity.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this fully automatic blown film machine cooling and heat dissipation component, an adjusting ring is set on the inner wall of the sub-ring. By rotating the adjusting ring, the flow rate of cold air through the second through hole can be precisely controlled, thereby achieving fine adjustment of the cooling effect. It can adapt to the production needs of films of different types and thicknesses, improving the flexibility and efficiency of cooling. The matching design of the limiting protrusion and the limiting groove ensures that the adjusting ring can stay stably after rotating to the predetermined position, preventing accidental rotation caused by vibration or other external factors, and ensuring the stability and reliability of the cooling effect.

[0016] 2. In this fully automatic blown film machine cooling and heat dissipation component, an adjusting rod is provided to adjust the spacing between the rings, which can flexibly adjust the contact time between the cold air and the film bubble, thereby optimizing the cooling effect. The cooling chambers opened inside the cooling rings are filled with graphene, which can quickly absorb the heat transferred from the film bubble and carry it away, improving cooling efficiency and shortening the cooling time of the film. Attached image description:

[0017] Figure 1 This is a schematic diagram of the overall structure of the cooling and heat dissipation component of the fully automatic blown film machine in a preferred embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the air ring in a preferred embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the first air ring in a preferred embodiment of the present invention;

[0020] Figure 4 This is a preferred embodiment of the present invention. Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 5 This is a schematic diagram of the overall structure of the connecting ring in a preferred embodiment of the present invention;

[0022] Figure 6 This is a preferred embodiment of the present invention. Figure 5 Enlarged schematic diagram of the structure at point B;

[0023] Figure 7 This is a schematic diagram of the overall structure of the adjusting rod in a preferred embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the cross-sectional structure of the cooling ring in a preferred embodiment of the present invention.

[0025] Illustration:

[0026] 1. Mold head;

[0027] 2. Air ring; 21. First sub-ring; 211. Cavity; 212. First air outlet; 213. Second air outlet; 214. Ring groove; 215. Limiting groove;

[0028] 22. Second segment; 23. Third segment;

[0029] 24. Adjusting ring; 241. First through hole; 242. Second through hole; 243. Connecting ring; 244. Limiting protrusion; 25. Connecting pipe;

[0030] 26. Adjusting rod; 261. First fixing rod; 262. Screw; 263. Second fixing rod; 27. Air inlet pipe;

[0031] 3. Cooling ring; 31. Cooling chamber; 32. Column hole; 4. A-frame; 5. Rewinding section. Detailed Implementation

[0032] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0033] Please see Figures 1-8 As shown, the purpose of this embodiment is to provide a cooling component for a fully automatic blown film machine, including a die head 1 of the blown film machine and an air ring 2 installed on the die head 1 for initial cooling of the film bubble. The air ring 2 includes several identical sub-rings, and each sub-ring has an adjusting ring 24 rotatably arranged on its inner wall for adjusting the airflow. Several adjustable rods 26 with adjustable spacing are arranged in a ring array between two adjacent sub-rings. A cooling ring 3 for further cooling of the film bubble is magnetically attached to the top of the air ring 2.

[0034] The die head 1 of the blown film machine is used to evenly distribute molten plastic and form a film bubble. The air ring 2 is used to provide a flow of cold air to quickly cool the expanded film bubble. The cooling ring 3 provides an additional cooling surface for the film, further promoting its complete cooling. The blown film machine also includes an A-frame 4 and a winding section 5. The A-frame 4 is located above the cooling ring 3 at a certain distance and its main function is to support and guide the film. The winding section 5's main function is to wind up the cooled film.

[0035] The segment ring includes a first segment ring 21 fixedly connected to the outer wall of the mold head 1, a second segment ring 22 is provided above the first segment ring 21, a third segment ring 23 is provided above the second segment ring 22, and the lower surface of the cooling ring 3 is magnetically connected to the upper surface of the third segment ring 23.

[0036] The first ring 21 has a cavity 211 for circulating cold air. The inner wall of the first ring 21 has a first air outlet 212, which is inclined upward. The inner wall of the first ring 21 also has a second air outlet 213, which is horizontally positioned and located below the first air outlet 212. Both the first air outlet 212 and the second air outlet 213 are connected to the cavity 211. The second air outlet 213 provides cooling airflow in the main horizontal direction, while the upwardly inclined first air outlet 212 is used to enhance the local cooling effect and prevent the top of the film bubble from overheating.

[0037] The inner wall of the first ring 21 has two ring grooves 214. The upper and lower ends of the ring grooves 214 are symmetrically arranged in a ring array with several limiting grooves 215. The ring grooves 214 are located at the upper and lower ends of the second air outlet 213.

[0038] A plurality of first through holes 241 and second through holes 242 are provided in a ring array through the side wall of the adjustment ring 24, and each second through hole 242 is located between two adjacent first through holes 241. The diameter of the first through hole 241 is the same as that of the second air outlet 213, and the diameter of the first through hole 241 is larger than that of the second through hole 242.

[0039] The outer wall of the adjusting ring 24 is symmetrically provided with connecting rings 243 on its upper and lower sides. Each connecting ring 243 has symmetrically provided limiting protrusions 244 at its upper and lower ends. The limiting protrusions 244 are made of elastic material. The connecting rings 243 are rotatably mounted within the ring groove 214, and the limiting protrusions 244 are engaged within the limiting groove 215. The limiting groove 215 is located longitudinally at the center point of the second air outlet 213 and between two adjacent second air outlets 213.

[0040] By rotating the adjusting ring 24, the connecting ring 243 slides within the annular groove 214 until the limiting protrusion 244 engages with the first through hole 241 or the second through hole 242 within the limiting groove 215. When the first through hole 241 aligns with the second air outlet 213, cold air can pass through smoothly with a strong airflow. When the second through hole 242 aligns with the second air outlet 213, the flow of cold air is restricted, resulting in a weaker airflow. This allows for fine-tuning of the cooling effect. Due to the contractile force of the limiting protrusion 244, its compression within the annular groove 214 does not affect the sliding of the adjusting ring 24. Once the adjusting ring 24 rotates to the desired position, the limiting protrusion 244 aligns with the limiting groove 215. Due to the elasticity of the limiting protrusion 244, it quickly returns to its original position and engages with the limiting groove 215. This ensures that the adjusting ring 24 can remain stably at the predetermined angle, preventing accidental rotation due to vibration or other external factors.

[0041] Similarly, the second sub-ring 22 and the third sub-ring 23 have the same structure as the first sub-ring 21.

[0042] The outer wall of the third sub-ring 23 is fixedly connected with several air inlet pipes 27 in a ring array. The air inlet pipes 27 are used to connect to external air intake equipment to provide cold air to the air ring 2. The air inlet pipes 27 are connected to the cavity 211. Several connecting pipes 25 are arranged in a ring array between the first sub-ring 21 and the second sub-ring 22. Several connecting pipes 25 are also arranged in a ring array between the second sub-ring 22 and the third sub-ring 23. The connecting pipes 25 are connected to the cavity 211. The connecting pipes 25 are flexible and can be stretched and adjusted to a certain extent. Cold air is injected into the cavity 211 of the third sub-ring 23 through the air inlet pipes 27. Most of the cold air flows into the cavity 211 of the second sub-ring 22 and the first sub-ring 21 through the connecting pipes 25. A small part of the cold air is blown towards the membrane bubble through the first air outlet 212 and the second air outlet 213. The same applies to the first sub-ring 21 and the second sub-ring 22.

[0043] Different film production processes may require different cooling intensities and cooling areas. By adjusting the spacing between the rings using the adjusting rod 26, the contact time between the cold air and the film bubble can be adjusted, thereby optimizing the cooling effect. For thicker films, a larger spacing may be needed to provide sufficient cooling time. Furthermore, it ensures optimal cooling performance at different production speeds. When the production speed increases, the spacing can be appropriately increased to reduce cooling resistance; conversely, when the production speed decreases, the spacing can be decreased to enhance the cooling effect.

[0044] The adjusting rod 26 includes a first fixing rod 261 fixedly connected to the second sub-ring 22. The lower end of the first fixing rod 261 is threaded with a screw 262. The lower end of the screw 262 is threaded with a second fixing rod 263 fixedly connected to the first sub-ring 21. The two ends of the screw 262 are reverse threads. By rotating the screw 262 clockwise or counterclockwise, the first sub-ring 21 and the second sub-ring 22 can be brought closer to each other or moved away from each other. Similarly, an adjusting rod 26 is provided between the second sub-ring 22 and the third sub-ring 23, and the distance can be adjusted by adjusting the adjusting rod 26.

[0045] The cooling ring 3 has a spiral cooling cavity 31 inside, and the cooling cavity 31 contains a heat-absorbing material, preferably graphene. This material can absorb the heat transferred from the thin film bubble and carry it away. The inner wall of the cooling ring 3 has several column holes 32, which are connected to the cooling cavity 31. When the thin film bubble passes through the cooling ring 3, the residual heat inside it will be quickly transferred to the heat-absorbing material in the cooling cavity 31 through the column holes 32.

[0046] In practical use, the adjusting ring 24 is rotated according to the film type and thickness to align the first through hole 241 or the second through hole 242 with the second air outlet 213. During this process, the connecting ring 243 slides within the ring groove 214, and finally the limiting protrusion 244 engages within the limiting groove 215. The spacing between the first sub-ring 21, the second sub-ring 22, and the third sub-ring 23 is adjusted by rotating the screw 262 of the adjusting rod 26 according to the film thickness and production speed. Cold air enters the cavity 211 of the third sub-ring 23 through the air inlet pipe 27 and circulates through the connecting pipe 25. The blown film machine is started at the cavity 211 between the second segment ring 22 and the first segment ring 21. The molten plastic is evenly distributed and extruded under the action of the die head 1 to form an expanded film bubble. Cold air is blown onto the film bubble from the first air outlet 212 and the second air outlet 213 to provide an all-round cooling effect. After the film bubble is initially cooled, it continues to move upward to the cooling ring 3. The heat-absorbing substances such as graphene in the cooling ring 3 absorb the residual heat in the film bubble through the column hole 32 and carry it away. Then the A-frame 4 supports and guides the cooled film to ensure that it enters the winding section 5 smoothly.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A cooling assembly for a fully automatic film blowing machine, comprising a die head (1) of the film blowing machine and an air ring (2) mounted on the die head (1) for initially cooling the film bubble, characterized in that, The wind ring (2) comprises several identical sub-rings, and the inner wall of each sub-ring is rotationally provided with an adjusting ring (24) for adjusting the wind force, and several adjusting rods (26) with adjustable spacing are arranged in an annular array between two adjacent sub-rings, and the top of the wind ring (2) is magnetically attracted to a cooling ring (3) for further cooling the film bubble.

2. The fully automatic film blowing machine cooling and temperature reducing assembly according to claim 1, characterized in that, The sub-ring comprises a first sub-ring (21) fixedly connected with the outer wall of the die head (1), a second sub-ring (22) arranged above the first sub-ring (21), and a third sub-ring (23) arranged above the second sub-ring (22), and the lower surface of the cooling ring (3) is magnetically connected with the upper surface of the third sub-ring (23).

3. The fully automatic film blowing machine cooling assembly according to claim 2, characterized in that, The first sub-ring (21) is provided with a cavity (211) for circulating cold air, and the inner wall of the first sub-ring (21) is provided with a first air outlet (212) and a second air outlet (213), wherein the first air outlet (212) is arranged upwardly inclined, and the second air outlet (213) is located below the first air outlet (212), and the first air outlet (212) and the second air outlet (213) are in communication with the cavity (211).

4. The fully automatic film blowing machine cooling and temperature reducing assembly according to claim 2, characterized in that, The inner wall of the first sub-ring (21) is provided with two annular grooves (214), and a plurality of limiting grooves (215) are symmetrically arranged in an annular array at the upper and lower ends of the annular grooves (214), and the annular grooves (214) are located at the upper and lower ends of the second air outlet (213).

5. The fully automatic film blowing machine cooling and temperature reducing assembly according to claim 3, characterized in that, A plurality of first through holes (241) and second through holes (242) are arranged in an annular array through the side wall of the adjusting ring (24), and each second through hole (242) is located between two adjacent first through holes (241), the diameter of the first through hole (241) is the same as that of the second air outlet (213), and the diameter of the first through hole (241) is greater than that of the second through hole (242).

6. The fully automatic film blowing machine cooling and temperature reducing assembly according to claim 4, characterized in that, The outer wall of the adjusting ring (24) is symmetrically provided with a connecting ring (243), and the upper and lower ends of the connecting ring (243) are symmetrically provided with limiting protrusions (244), the connecting ring (243) is rotationally installed in the annular groove (214), and the limiting protrusions (244) are clamped in the limiting grooves (215).

7. The fully automatic film blowing machine cooling and temperature reducing assembly according to claim 1, characterized in that, The adjusting rod (26) comprises a first fixed rod (261) fixedly connected with the second sub-ring (22), a screw rod (262) threadedly arranged at the lower end of the first fixed rod (261), and a second fixed rod (263) fixedly connected with the first sub-ring (21) and threadedly arranged at the lower end of the screw rod (262), and the screw rod (262) is reversely threaded at both ends, and similarly, the second sub-ring (22) and the third sub-ring (23) are provided with adjusting rods (26).

8. The fully automatic film blowing machine cooling and temperature reducing assembly according to claim 1, characterized in that, The cooling ring (3) is provided with a cooling cavity (31) in a spiral shape, and a plurality of column holes (32) are arranged in the inner wall of the cooling ring (3), and the column holes (32) are in communication with the cooling cavity (31).

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