Blown film machine air ring oil guiding structure

Abstract

The utility model discloses a wind ring oil guide structure of blowing film machine, include: fixed ring, the fixed ring side wall is equipped with multiple groups of through groove, the fixed ring outer wall is provided with multiple groups of the installation block that is annular array distribution, the fixed ring bottom is provided with the flow guide ring, the flow guide ring with the inner wall of fixed ring is formed in common and encloses and forms the oil storage cavity, the utility model oil absorption cloth surface oil absorption capillary tube fast adsorption blowing film process because of high temperature decomposition produces trace oiliness material, prevents its diffusion, and the oil absorption cloth is net structure, and multiple groups of oil absorption capillary tube are connected with each other, and the adsorption area is significantly expanded, and the capture efficiency to oil mist is improved, and the oiliness material that is adsorbed is guided to the oil storage cavity through the oil absorption cloth, avoids that oil drop directly drops in the film surface, reduces product surface defect.

Description

Technical Field

[0001] This utility model relates to the field of blown film machine technology, and in particular to the oil guide structure of the blown film machine air ring. Background Technology

[0002] During operation, some hydrocarbons in the plastic raw materials of existing plastic protective film blowing machines undergo thermal decomposition at high temperatures, producing a small amount of oily substances. These oily substances rise with the hot airflow and gradually accumulate on the inner wall of the air ring above the blown film head. When the oily substances accumulate to a certain extent, they form oil droplets and fall along the air ring wall. Finally, they are carried into the surface of the film being blown by the high-speed airflow from the air outlet. Oil droplets adhering to the film will cause quality defects such as oil spots, reduced transparency, and uneven surface, which seriously affect the appearance and performance of the product. In order to ensure product quality, once oil stains are found on the film surface, the machine must be stopped to clean the oil accumulated inside the air ring. This not only increases the maintenance workload, but also significantly reduces the continuous production efficiency and overall capacity of the equipment. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0004] The blown film machine's air ring oil guide structure includes:

[0005] The fixed ring has multiple sets of through grooves on its sidewalls, multiple sets of mounting blocks arranged in a ring array on its outer wall, and a guide ring at the bottom of the fixed ring. The guide ring and the inner wall of the fixed ring together form an oil storage cavity.

[0006] An oil-absorbing cloth is adhesively attached to the inner wall of the fixing ring. The oil-absorbing cloth includes multiple sets of oil-absorbing capillaries, which are interconnected on the surface of the oil-absorbing cloth to form a mesh structure.

[0007] As an improvement to the above technical solution, the oil-absorbing cloth also includes multiple sets of oil-collecting fiber tubes, each with an opening at the bottom. The multiple sets of oil-collecting fiber tubes are interconnected to form a ring structure, and the oil-collecting fiber tubes are connected to the oil-absorbing capillary tube.

[0008] As an improvement to the above technical solution, the included angle between the oil-absorbing capillary and the oil-storing fiber tube is an acute angle.

[0009] As an improvement to the above technical solution, an oleophobic layer is bonded to the outer surface of the multiple sets of oil-retaining fiber tubes.

[0010] As an improvement to the above technical solution, multiple sets of oil collection boxes are engaged and connected inside the oil storage cavity, and the multiple oil collection boxes are arranged in a ring array connected end to end inside the oil storage cavity.

[0011] The beneficial effects of this utility model are:

[0012] The oil-absorbing capillaries on the surface of the oil-absorbing cloth quickly absorb the trace amounts of oily substances produced by high-temperature decomposition during the blown film process, preventing their diffusion.

[0013] The oil-absorbing cloth has a mesh structure with multiple sets of oil-absorbing capillaries connected to each other, which significantly expands the adsorption area and improves the capture efficiency of oil mist. The adsorbed oily substances are guided to the oil storage chamber through the oil-absorbing cloth, avoiding oil droplets from dripping directly onto the film surface and reducing product surface defects. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of this utility model;

[0015] Figure 2 This is a top view of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the oil-absorbing cloth of this utility model.

[0017] Reference numerals: 10, fixing ring; 11, through groove; 12, mounting block; 13, guide ring; 14, oil collection box; 20, oil-absorbing cloth; 201, oil-collecting fiber tube; 202, oil-absorbing capillary tube; 203, opening; 204, oleophobic layer. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The blown film machine's air ring oil guide structure includes:

[0020] The fixed ring 10 has multiple sets of through grooves 11 on its side wall, multiple sets of mounting blocks 12 arranged in a ring array on its outer wall, and a guide ring 13 at the bottom of the fixed ring 10. The guide ring 13 and the inner wall of the fixed ring 10 together form an oil storage cavity.

[0021] Oil-absorbing cloth 20 is adhesively disposed on the inner wall of the fixing ring 10. The oil-absorbing cloth 20 includes multiple sets of oil-absorbing capillaries 202, which are interconnected on the surface of the oil-absorbing cloth 20 to form a mesh structure.

[0022] Specifically, the oil-guiding structure is inserted from top to bottom onto the air ring of the blown film machine via the mounting block 12. High-temperature air is blown into the blown film machine, which stretches the softened plastic to form a film. During the blown film process, some hydrocarbons in the protective film raw material will produce a very small amount of oily substance under the action of high temperature. Under the blowing of hot air, this oily substance adheres to the inner surface of the oil-absorbing cloth 20. The oil-absorbing capillary 202 uses the capillary siphon principle to quickly absorb the oily substance produced during the blown film process. The mesh structure expands the absorption area and improves the oil absorption efficiency. The oil storage chamber collects the oily substance discharged by the oil-absorbing cloth, forming a temporary storage space to prevent oil stains from dripping directly and contaminating the film or equipment. The mounting block 12 allows the oil-guiding structure to be disassembled and replaced periodically. The oil storage chamber is easy to clean, reducing downtime maintenance time, reducing the adhesion of oil stains on the film surface, reducing film surface defects, and improving product transparency and uniformity. Polytetrafluoroethylene is used as the material for the oil-absorbing capillary 202, the oil-storing fiber tube 201, and the oleophobic layer 204.

[0023] In one embodiment, the oil-absorbing cloth 20 further includes multiple sets of oil-collecting fiber tubes 201. Each oil-collecting fiber tube 201 has an opening 203 at its bottom. The multiple sets of oil-collecting fiber tubes 201 are interconnected to form a ring structure. The oil-collecting fiber tubes 201 are connected to the oil-absorbing capillary tubes 202. The oil-absorbing capillary tubes 202 guide the oil into the oil-collecting fiber tubes 201. Due to the surface tension of the oil, small oil droplets are formed on the oil-collecting fiber tubes 201 and flow into the oil storage chamber through the opening 203 at the bottom of the oil-collecting fiber tubes 201.

[0024] In one embodiment, the angle between the oil-absorbing capillary 202 and the oil-storing fiber tube 201 is an acute angle. The oil-absorbing capillary 202 is responsible for adsorption, while the oil-storing fiber tube 201 is responsible for storage. The acute angle formed between the two is conducive to forming a one-way oil-guiding path. On the one hand, it allows the oil to migrate towards the oil-storing fiber tube 201 with the help of gravity, making it easier for oil droplets to enter the oil-storing fiber tube 201. On the other hand, it can prevent the oil in the oil-storing fiber tube 201 from flowing back to the surface of the oil-absorbing cloth.

[0025] In one embodiment, the outer surface of multiple sets of oil-retaining fiber tubes 201 is bonded with an oleophobic layer 204. Due to the oleophobic properties of the oleophobic layer 204, oil droplets will not be absorbed by the oleophobic layer 204, which can effectively prevent oil droplets from entering the air ring of the blown film machine.

[0026] In one embodiment, multiple sets of oil collection boxes 14 are snap-fitted into the oil storage chamber. The multiple oil collection boxes 14 are arranged in a circular array, end to end, in the oil storage chamber. Oil droplets move along the oil-absorbing capillary tube 202 to the oil-collecting fiber tube 201 under the action of gravity and capillary action, and then enter the oil storage chamber area through the opening 203. The circularly arranged oil collection boxes 14 in the oil storage chamber receive oil droplets from above. Each oil collection box 14 is responsible for collecting oil within a certain angle range. The end-to-end design ensures that the entire circumference of the wind ring is covered without dead angles. After the oil collection box 14 is full, it can be quickly disassembled through the snap-fit ​​structure. The operator pours out the waste oil and cleans the oil collection box to complete the maintenance.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An oil guide structure for a blown film machine, characterized in that, include: A fixed ring (10) is provided with multiple sets of through grooves (11) on its side wall, and multiple sets of mounting blocks (12) arranged in a ring array on the outer wall of the fixed ring. A guide ring (13) is provided at the bottom of the fixed ring (10), and the guide ring (13) and the inner wall of the fixed ring (10) together form an oil storage cavity. Oil-absorbing cloth (20) is bonded to the inner wall of the fixing ring (10). The oil-absorbing cloth (20) includes multiple sets of oil-absorbing capillaries (202). The multiple sets of oil-absorbing capillaries (202) are interconnected on the surface of the oil-absorbing cloth (20) to form a mesh structure.

2. The blown film machine air ring oil guiding structure according to claim 1, characterized in that: The oil-absorbing cloth (20) also includes multiple sets of oil-storing fiber tubes (201). The bottom of each oil-storing fiber tube (201) has an opening (203). The multiple sets of oil-storing fiber tubes (201) are connected to each other in a ring structure. The oil-storing fiber tubes (201) are connected to the oil-absorbing capillary tubes (202).

3. The blown film machine air ring oil guiding structure according to claim 2, characterized in that: The angle between the oil-absorbing capillary tube (202) and the oil-storing fiber tube (201) is an acute angle.

4. The blown film machine air ring oil guiding structure according to claim 1, characterized in that: An oleophobic layer (204) is bonded to the outer surface of the multiple sets of oil-retaining fiber tubes (201).

5. The blown film machine air ring oil guide structure according to claim 4, characterized in that: Multiple sets of oil collection boxes (14) are engaged and connected inside the oil storage cavity. The multiple oil collection boxes (14) are arranged in a ring array connected end to end inside the oil storage cavity.

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