PE film cooling device
By adopting a testing device, the problems of film thickness uniformity and stability testing during PE film production were solved, testing costs were reduced, testing accuracy was improved, and film quality stability was guaranteed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-04-03
AI Technical Summary
In the existing technology, during the PE film production process, the uniformity and stability of the film thickness and the film thickness detection during the cooling process of the film bubble are subject to certain testing instruments, resulting in high operating costs of the testing instruments. In addition, the existing technology has errors in film thickness detection, which affects the detection accuracy of the film and leads to high operating costs of the testing instruments.
By using fastening components to fix the film to the outside and implementing the use of guide rods, and by employing a detection mechanism, the problem of high operating costs of detection instruments in the prior art is solved. By employing a detection device, a PE film cooling device is provided, including mold thickness detection. By using a PE film cooling device and a detection device, the high operating costs of detection instruments are solved, and the film thickness uniformity and stability detection is achieved, thus solving the problem of high detection costs in the prior art.
This technology enables the detection of membrane thickness uniformity and stability, reduces detection costs, improves detection accuracy, and ensures membrane quality stability.
Smart Images
Figure CN224074798U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PE film production equipment technology, and in particular to a PE film cooling device. Background Technology
[0002] PE film production equipment mainly includes several types such as extrusion, forming, cooling, and traction winding. Among them, blown film forming and cooling and shaping are key processes that directly affect the quality of the product.
[0003] Molten polyethylene is extruded through the die head of an extruder to form a thin tube. Compressed air is then introduced from the center of the die head to inflate the tube into a larger diameter film bubble. Simultaneously, the thickness and width of the film are controlled by adjusting the inflation ratio and traction speed. During inflation, the film bubble is cooled by an external cooling air ring, allowing the film to quickly solidify and maintain its shape and dimensional stability.
[0004] The membrane bubble moves upward under the influence of cooling air from within the air ring and upward traction. During this upward movement, due to its relatively long length, the membrane bubble is prone to swaying, resulting in poor stability and consequently affecting the uniformity of membrane thickness. Furthermore, as a rotating body with its centerline as a reference, the membrane bubble may experience slight swaying during cooling and transport, which can also affect membrane quality, although this is difficult to observe with the naked eye and requires specific testing instruments.
[0005] To address the problems in the prior art, a PE film cooling device is provided. Utility Model Content
[0006] In view of this, the present invention proposes a PE film cooling device to solve the existing problems.
[0007] The technical solution of this utility model is achieved as follows: This utility model provides a PE film cooling device, including a mold body, a first cooling air duct, and a first air ring, wherein,
[0008] The upper part of the mold body is provided with a mold head, and a first air ring is provided around the mold head;
[0009] The lower end of the first air ring is connected to multiple first cooling air ducts;
[0010] The first air ring includes a first housing, the upper end of which has a first air outlet, and the first air outlet is arranged around the mold head; a plurality of fastening components are evenly distributed on the outside of the first housing, and a guide rod is vertically fixedly connected to the fastening components, and a second air ring is slidably passed through the guide rod, the lower end of which is supported by a compression spring.
[0011] Furthermore, preferably, the fastening assembly includes a U-shaped plate with a fastening bolt at its lower end, a guide groove on the outer side of the U-shaped plate, a guide rod in the guide groove, and the guide rod being fixed in the guide groove by a limiting plate.
[0012] Furthermore, preferably, the second air ring includes a second housing, the inner side of which is provided with a second air outlet, the outer side of which is provided with a second cooling air duct, the second housing is slidably connected to a guide rod, a counterweight is provided around the guide rod, and the counterweight abuts against the upper end face of the second housing.
[0013] Furthermore, preferably, the upper surface of the second housing is provided with a detection mechanism, which includes a guide block. The guide block is fixedly mounted on the upper surface of the second housing. A detection ruler is slidably connected to the guide block, and the position of the detection ruler is fixed by a limiting screw and a nut provided on the guide block.
[0014] Furthermore, preferably, the guide slide has four inlet grooves on its side, which are located at the four corners of the guide slide.
[0015] Furthermore, preferably, a fixing plate is provided on the upper side of the inlet groove, and a fastening screw is provided on the fixing plate.
[0016] The present invention has the following advantages over the prior art:
[0017] (1) The PE film cooling device disclosed in this utility model is fixed to the outside of the first air ring by a fastening assembly, and then the guide rod is vertically set. The bottom of the second air ring is supported by a compression spring, and can be vertically adjusted along the guide rod. Furthermore, the blowing position of the second air ring is adjusted according to the change of the position of the membrane bubble to ensure that the membrane bubble is located in the middle of the second air ring and rises steadily;
[0018] (2) The centering of the membrane bubble can also be judged by the second air ring, but the error is slightly large and the accuracy is not high enough. The scale is set on the detection ruler. By moving multiple detection rulers inward by the same distance relative to the guide block, the centering of the membrane bubble can be judged by reference, and the status of the membrane bubble can be detected at all times.
[0019] (3) Four guide grooves are provided on the side of the guide slide, and they are located at the four corners of the guide slide. This facilitates quick assembly and disassembly of the limiting plate. At the same time, by setting the guide grooves to tilt inward at a certain angle, the guide rod can be automatically clamped during the downward movement of the limiting plate. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of the PE film cooling device disclosed in this utility model;
[0022] Figure 2 This is a schematic diagram of the structure of the second housing of the PE film cooling device disclosed in this utility model;
[0023] Figure 3 yes Figure 2 Enlarged view of point A in the middle;
[0024] Figure 4 This is a schematic diagram of the detection mechanism of the PE film cooling device disclosed in this utility model.
[0025] Figure 5 yes Figure 4 Enlarged view of point B in the middle;
[0026] Figure 6 This is a schematic diagram of the structure of the limiting plate of the PE film cooling device disclosed in this utility model.
[0027] Attached image labels:
[0028] 1-Mold body, 11-Mold head, 2-First cooling air duct, 3-First air ring, 31-First housing, 32-First air outlet, 4-Fastening assembly, 41-U-shaped plate, 411-Guide slide, 42-Fastening bolt, 43-Limiting plate, 44-Inlet groove, 45-Fixing plate, 46-Fastening screw, 5-Guide rod, 6-Second air ring, 61-Second housing, 62-Second air outlet, 63-Second cooling air duct, 7-Compression spring, 8-Detection mechanism, 81-Guide block, 82-Detection ruler, 9-Counterweight block. Detailed Implementation
[0029] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0030] like Figure 1 As shown, combined with Figure 2-6This utility model discloses a PE film cooling device, including a mold body 1, a first cooling air duct 2, and a first air ring 3, wherein...
[0031] The upper end of the mold body 1 is provided with a mold head 11, and a first air ring 3 is provided around the mold head 11;
[0032] Multiple first cooling air ducts 2 are connected to the lower end of the first air ring 3;
[0033] In this embodiment, the first air ring 3 includes a first housing 31, with a first air outlet 32 at its upper end, and the first air outlet 32 is arranged around the mold head 11. Multiple fastening components 4 are evenly distributed on the outside of the first housing 31, and a guide rod 5 is vertically fixedly connected to the fastening components 4. A second air ring 6 slides through the guide rod 5, and the lower end of the second air ring 6 is supported by a compression spring 7. The fastening components 4 fix the first air ring 3 to the outside, thus achieving the vertical setting of the guide rod 5. The bottom of the second air ring 6 is supported by the compression spring 7, allowing for vertical adjustment along the guide rod 5. Furthermore, the blowing position of the second air ring 6 is adjusted according to the change in the position of the membrane bubble, ensuring that the membrane bubble is located in the middle of the second air ring 6 and rises steadily.
[0034] In this embodiment, the fastening assembly 4 includes a U-shaped plate 41 with a fastening bolt 42 at its lower end. A guide groove 411 is formed on the outer side of the U-shaped plate 41, and a guide rod 5 is provided within the guide groove 411. The guide rod 5 is fixed within the guide groove 411 by a limiting plate 43. The U-shaped plate 41 is engaged with the outer side of the first housing 31, and then the position is fixed by the fastening bolt 42 at the bottom. The guide rod 5 can move up and down along the guide groove 411, making it easier to adjust the height of the second air ring 6. It also facilitates the disassembly and assembly of the device.
[0035] In this embodiment, the second air ring 6 includes a second housing 61. A second air outlet 62 is provided on the inner side of the second housing 61, and a second cooling air duct 63 is provided on the outer side of the second housing 61. The second housing 61 is slidably connected to a guide rod 5. A counterweight 9 is provided around the guide rod 5, and the counterweight 9 presses against the upper surface of the second housing 61. Because there is a gap between the guide rod 5 and the sliding part of the second housing 61, the weight of the counterweights 9 on the four guide rods 5 is consistent, thus ensuring that the second housing 61 is in a horizontal state. Otherwise, the upper end of the second housing 61 would tilt slightly under pressure. The height of the second housing 61 is affected by the weight of the counterweights 9, and the weight of the counterweights 9 can be adjusted as needed. The counterweights 9 are similar to a weight or a counterweight.
[0036] In this embodiment, a detection mechanism 8 is provided on the upper surface of the second housing 61. The detection mechanism 8 includes a guide block 81, which is fixedly mounted on the upper surface of the second housing 61. A detection ruler 82 is slidably connected to the guide block 81, and the position of the detection ruler 82 is fixed by a limiting screw and nut provided on the guide block 81. The centering of the membrane bubble can also be determined by referring to the second air ring 6, but the error is slightly large and the accuracy is insufficient. The detection ruler 82 is provided with a scale. By moving multiple detection rulers 82 inward by the same distance relative to the guide block 81, the centering of the membrane bubble can be determined by reference, and thus, the status of the membrane bubble can be detected at all times.
[0037] In this embodiment, the guide groove 411 has four guide grooves 44 on its side, located at the four corners of the guide groove 411. This facilitates quick assembly and disassembly of the limiting plate 43. Furthermore, the guide grooves 44 are tilted inwards at a certain angle to automatically clamp the guide rod 5.
[0038] In this embodiment, a fixing plate 45 is provided on the upper side of the guide groove 44, and a fastening screw 46 is provided on the fixing plate 45. In order to ensure the reliability of the position of the guide rod 5 in the guide groove 411, the limiting plate 43 can be pressed by the fastening screw 46 to prevent slippage.
[0039] The working principle of this utility model is as follows:
[0040] In this invention, the first air ring 3 is fixed to the outside of the fastening assembly 4, and the guide rod 5 is vertically positioned. The bottom of the second air ring 6 is supported by a compression spring 7, and can be vertically adjusted along the guide rod 5. Furthermore, the blowing position of the second air ring 6 is adjusted according to the change in the position of the membrane bubble, ensuring that the membrane bubble is located in the middle of the second air ring 6 and rises steadily.
[0041] The centering of the membrane bubble can also be determined by referring to the second air ring 6, but the error is slightly large and the accuracy is not high enough. The detection scale 82 is set with scale. By moving multiple detection scales 82 inward by the same distance relative to the guide block 81, the centering of the membrane bubble can be determined by reference, and thus the status of the membrane bubble can be detected at all times.
[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A PE film cooling device, comprising a mold body (1), a first cooling air duct (2), and a first air ring (3), wherein, The upper end of the mold body (1) is provided with a mold head (11), and a first air ring (3) is provided around the mold head (11); The lower end of the first air ring (3) is connected to multiple first cooling air pipes (2); The first air ring (3) is characterized in that: the first air ring (3) includes a first housing (31), the upper end of the first housing (31) is provided with a first air outlet (32), and the first air outlet (32) is arranged around the mold head (11); a plurality of fastening components (4) are evenly distributed on the outside of the first housing (31), and a guide rod (5) is vertically fixedly connected through the fastening components (4), and a second air ring (6) is slidably passed through the guide rod (5), and the lower end of the second air ring (6) is supported by a compression spring (7).
2. The PE film cooling device as described in claim 1, characterized in that: The fastening assembly (4) includes a U-shaped plate (41) with a fastening bolt (42) at the lower end. A guide groove (411) is provided on the outer side of the U-shaped plate (41), and a guide rod (5) is provided in the guide groove (411). The guide rod (5) is fixed in the guide groove (411) by a limiting plate (43).
3. The PE film cooling device as described in claim 1, characterized in that: The second air ring (6) includes a second housing (61), the inner side of which is provided with a second air outlet (62), the outer side of which is provided with a second cooling air duct (63), the second housing (61) is slidably connected to the guide rod (5), a counterweight (9) is provided around the guide rod (5), and the counterweight (9) presses against the upper end face of the second housing (61).
4. The PE film cooling device as described in claim 3, characterized in that: The upper surface of the second housing (61) is provided with a detection mechanism (8), which includes a guide block (81). The guide block (81) is fixedly mounted on the upper surface of the second housing (61). A detection ruler (82) is slidably connected to the guide block (81), and the position of the detection ruler (82) is fixed by a limiting screw and a nut provided on the guide block (81).
5. The PE film cooling device as described in claim 2, characterized in that: The guide groove (411) has four guide grooves (44) on its side, which are located at the four corners of the guide groove (411).
6. The PE film cooling device as described in claim 5, characterized in that: The upper side of the inlet groove (44) is provided with a fixing plate (45), and the fixing plate (45) is provided with a fastening screw (46).