Cooling air ring for three-layer co-extrusion blow molding machine

Abstract

The utility model relates to the technical field of blow molding machines, and discloses a cooling air ring for a three-layer co-extrusion blow molding machine, which comprises an air ring shell, an air cavity is arranged in the inner wall of the air ring shell, a spiral pipe is arranged in the air cavity, three groups of air inlet pipes are arranged in the shell of the air ring shell, and the three groups of air inlet pipes are arranged in an inclined manner. A bearing is installed on the inner wall of an inner shell of the air ring shell, multiple sets of spoilers are fixedly installed on the outer wall ring of the bearing, the spoilers are obliquely arranged, the direction of the air inlet pipe is the same as the flow blocking direction of the spoilers, the water cooling temperature can be transmitted into the air cavity through the spiral pipe, and the air inlet pipe can be connected with external equipment and air outlet equipment. According to the air ring shell, the air is conveyed to the spoiler through the air inlet and the air outlet, the spoiler is extruded by air pressure and can rotate in the air ring shell under the cooperation of the bearing, so that the spoiler better mixes and cools the temperature in the air ring shell, the mixed temperature can be discharged from the air holes, and the heat dissipation and cooling effects are better achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blow molding machines, and particularly relates to a cooling air ring for a three-layer co-extrusion blow molding machine. Background Technique

[0002] Polyethylene is a transparent film made of polyethylene. Due to its non-toxic, odorless, and good low-temperature resistance and corrosion resistance properties, it is widely used in the packaging field. In order to improve the quality of polyethylene films and reduce production costs, existing methods usually use three-layer co-extrusion blow molding machines to produce polyethylene films. The cooling air ring is one of the commonly used supporting devices for cooling the film bubble during the forming of polyethylene films and is an essential device for the film blowing air cooling system. During the film blowing process, the air ring uses the air brought by the fan as the cooling medium to cool the film bubble blowing area. When the cooling air blows towards the film bubble through the air ring, the high-temperature film bubble quickly contacts the cold air and heat exchange occurs. The heat on the film bubble is quickly dissipated through the air transmission, so that the film bubble is cooled.

[0003] In the patent document with the authorized publication number of CN216682973U, a cooling air ring body, a rotating component, and a cooling component are disclosed. The cooling air ring body is provided with an air inlet pipe and an annular cooling cavity communicated with the air inlet pipe, and an air outlet channel is arranged around the inner side wall of the cooling air ring body; the rotating component includes a rotating housing, the rotating housing is arranged on the inner side wall of the cooling air ring body, and the rotating housing is provided with a plurality of air outlet holes, and the plurality of air outlet holes are uniformly arranged along the layout path of the air outlet channel; the rotating housing can rotate around its axis so that the air outlet holes correspond to different positions of the film bubble; the cooling component includes cooling pipes and a cooler, the cooling pipes are uniformly arranged in the cooling cavity, and the liquid inlet end and the liquid outlet end of the cooling pipes are respectively connected to the cooler; the gas in the intake pipe is cooled by heat exchange in the cooling cavity, and then passes through the air outlet channel and finally blows towards the film bubble through the air outlet holes. Through the setting of the present application, uniform heat dissipation of the film bubble can be realized and the quality of the film bubble can be improved.

[0004] When the above device is implemented, when the gas enters the inside of the cooling air ring body, since there is a certain space inside the cooling air ring body and the gas flows relatively fast, the temperature on the cooling pipes cannot be well transferred and dissipated, and then the heat dissipation effect will become worse. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cooling air ring for a three-layer co-extrusion blow molding machine, which solves the problem that when the above device is implemented, when the gas enters the inside of the cooling air ring body, since there is a certain space inside the cooling air ring body and the gas flows relatively fast, the temperature on the cooling pipes cannot be well transferred and dissipated, and then the heat dissipation effect will become worse.

[0006] The embodiment of the present application provides a cooling air ring for a three-layer co-extrusion blow molding machine, including an air ring housing. An air cavity is formed in the inner wall of the air ring housing, and a spiral tube is arranged in the air cavity. Three air inlet pipes are installed inside the outer shell of the air ring housing, and the three air inlet pipes are inclined. Bearings are installed on the inner wall of the inner shell of the air ring housing, and a plurality of flow blocking plates are fixedly installed on the outer wall circle of the bearings. The flow blocking plates are inclined, and the orientation of the air inlet pipes is the same as the flow blocking orientation of the flow blocking plates. Two air permeable holes are formed in the inner wall of the air ring housing.

[0007] By adopting the above technical solution, the temperature of the water cooling can be transferred to the inside of the air cavity through the spiral tube, and the air inlet pipes can be connected to an external air outlet device, so as to transport gas to the flow blocking plates. The flow blocking plates can be rotated in the air ring housing with the cooperation of the bearings under the extrusion of air pressure, so that the flow blocking plates can better mix and cool the temperature inside the air ring housing, and then the mixed temperature can be discharged from the air permeable holes, thus playing a better role in heat dissipation and cooling.

[0008] Optionally, the air permeable holes are arranged in an annular array, and the two air permeable holes are respectively arranged at both ends of the bearing.

[0009] By adopting the above technical solution, the air permeable holes are evenly distributed on the inner wall of the air ring housing, so that gas can be discharged evenly, and the heat dissipation effect is better.

[0010] Optionally, a water inlet pipe is installed in the inner wall of the outer shell of the air ring housing, and the water inlet pipe is installed at the upper port of the spiral tube.

[0011] By adopting the above technical solution, the outer shell of the air ring housing can play a role in fixing the water inlet pipe, and the water inlet pipe can play a role in introducing water into the spiral tube.

[0012] Optionally, a water outlet pipe is installed in the inner wall of the outer shell of the air ring housing, and the water outlet pipe is installed at the lower port of the spiral tube.

[0013] By adopting the above technical solution, the outer shell of the air ring housing can play a role in fixing the water outlet pipe, and the water outlet pipe can discharge the water in the spiral tube.

[0014] Optionally, a plurality of U-shaped clamps are fixedly connected to the inner wall of the outer shell of the air ring housing, and the U-shaped clamps are clamped with the spiral tube.

[0015] By adopting the above technical solution, the air ring housing can play a role in fixing the U-shaped clamps, and the U-shaped clamping can play a role in fixing the spiral tube.

[0016] Optionally, a lid is fixedly installed at the upper end of the air ring housing through two bolts.

[0017] By adopting the above technical solution, the lid and the air ring housing can be fixed by bolts, and the arrangement of the lid can facilitate the staff to replace and repair components inside the air ring housing.

[0018] Optionally, an inner sealing ring and an outer sealing ring are fixedly connected to the lower end of the lid. The inner sealing ring is slidably connected to the inner wall of the air ring housing, and the outer sealing ring is slidably connected to the inner wall of the air ring housing.

[0019] By adopting the above technical solution, the inner sealing ring and the outer sealing ring can seal the lid and the air ring housing.

[0020] Compared with the prior art, the beneficial effects of the technical solution of the present application are as follows:

[0021] The technical solution of the present application can transfer the temperature of water cooling to the inside of the air cavity through the spiral tube. The intake pipe can be connected to the external device's air outlet device, so as to transport the gas to the baffle. The baffle can be rotated in the air ring housing with the cooperation of the bearing under the extrusion of air pressure, so that the baffle can better mix and cool the temperature inside the air ring housing, and then the mixed temperature can be discharged from the air permeable holes, thus better playing the role of heat dissipation and cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objects and advantages of the present invention will become more apparent:

[0023] Figure 1 It is a front view schematic diagram of a cooling air ring for a three-layer coextrusion blow molding machine of the present invention;

[0024] Figure 2 It is a Figure 1 magnified view of part A in a cooling air ring for a three-layer coextrusion blow molding machine of the present invention;

[0025] Figure 3 It is a partial top view schematic diagram of a cooling air ring for a three-layer coextrusion blow molding machine of the present invention;

[0026] Figure 4 It is a Figure 3 magnified view of part B in a cooling air ring for a three-layer coextrusion blow molding machine of the present invention.

[0027] In the figure: 1, air ring housing; 2, intake pipe; 3, air cavity; 4, inner sealing ring; 5, bearing; 6, baffle; 7, spiral tube; 8, air permeable hole; 9, water inlet pipe; 10, water outlet pipe; 11, outer sealing ring; 12, lid; 13, bolt; 14, U-shaped clip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Please refer toFigures 1 - 4 , the present utility model provides a technical solution: a cooling air ring for a three-layer co-extrusion blow molding machine, including an air ring housing 1. An air cavity 3 is opened in the inner wall of the air ring housing 1. A spiral pipe 7 is arranged in the air cavity 3. Three intake pipes 2 are installed inside the outer shell of the air ring housing 1. The three intake pipes 2 are arranged obliquely. The inner wall of the inner shell of the air ring housing 1 is installed with a bearing 5. A plurality of flow blocking plates 6 are fixedly installed on the outer wall circle of the bearing 5. The flow blocking plates 6 are arranged obliquely, and the orientation of the intake pipe 2 is the same as the flow blocking orientation of the flow blocking plate 6. Two air permeable holes 8 are opened in the inner wall of the air ring housing 1. A water inlet pipe 9 is installed in the inner wall of the outer shell of the air ring housing 1. The water inlet pipe 9 is installed at the upper port of the spiral pipe 7. A water outlet pipe 10 is installed in the inner wall of the outer shell of the air ring housing 1. The water outlet pipe 10 is installed at the lower port of the spiral pipe 7. A plurality of U-shaped clamps 14 are fixedly connected to the inner wall of the outer shell of the air ring housing 1. The U-shaped clamps 14 are clamped with the spiral pipe 7.

[0029] In the technical solution of the present utility model, the temperature of water cooling can be transmitted to the inside of the air cavity 3 through the spiral pipe 7, and the intake pipe 2 can be connected to an external gas outlet device, so as to transport gas to the flow blocking plate 6. The flow blocking plate 6 can be rotated in the air ring housing 1 with the cooperation of the bearing 5 under the extrusion of air pressure, so that the flow blocking plate 6 can better mix and cool the temperature inside the air ring housing 1, and then the mixed temperature can be discharged from the air permeable holes 8, so as to better play the role of heat dissipation and temperature reduction.

[0030] In addition, the outer shell of the air ring housing 1 can play a role in fixing the water inlet pipe 9, and the water inlet pipe 9 can play a role in introducing water into the spiral pipe 7. The outer shell of the air ring housing 1 can play a role in fixing the water outlet pipe 10, and the water outlet pipe 10 can discharge the water in the spiral pipe 7. The air ring housing 1 can play a role in fixing the U-shaped clamps 14, and the U-shaped clamping can play a role in fixing the spiral pipe 7.

[0031] In the technical solution of the present utility model, as Figure 1 and Figure 3 shown, the air permeable holes 8 are arranged in an annular array. The two air permeable holes 8 are respectively arranged at both ends of the bearing 5. The air permeable holes 8 are evenly distributed on the inner wall of the air ring housing 1, so that gas can be discharged evenly and the heat dissipation effect is better.

[0032] In the technical solution of the present utility model, as Figure 1 and Figure 3As shown in the figure, at the upper end of the air ring housing 1, a cover 12 is fixedly installed through two sets of bolts 13. The bolts 13 can fix the cover 12 and the air ring housing 1. The setting of the cover 12 can facilitate the staff to replace and repair the components inside the air ring housing 1. At the lower end of the cover 12, an inner sealing ring 4 and an outer sealing ring 11 are fixedly connected. The inner sealing ring 4 is slidably connected to the inner wall of the air ring housing 1, and the outer sealing ring 11 is slidably connected to the inner wall of the air ring housing 1. The inner sealing ring 4 and the outer sealing ring 11 can seal the cover 12 and the air ring housing 1.

[0033] During use, first, ensure that the cooling air ring is correctly installed on the three-layer coextrusion blow molding machine, and check that all connecting components such as the air inlet pipe 2, the water inlet pipe 9, the water outlet pipe 10, the spiral pipe 7, etc. are firmly installed and there is no leakage. Check whether the air vent holes 8 on the air ring housing 1 are blocked to ensure smooth air flow. Open the valves of the water inlet pipe 9 and the water outlet pipe 10 to prepare for circulating cooling water. The cooling water enters the spiral pipe 7 inside the air ring housing 1 through the water inlet pipe 9. The design of the spiral pipe 7 helps to increase the contact area between the cooling water and the air ring housing 1, improving the cooling efficiency. The cooling water circulates inside the spiral pipe 7, absorbs and takes away the heat of the air ring housing 1, and then is discharged through the water outlet pipe 10 to complete a cycle. The cooling air enters the air cavity 3 of the air ring housing 1 through three sets of inclined air inlet pipes 2. The inclined design of the air inlet pipes 2 helps to guide the air flow in a specific direction, enhancing the cooling effect. The cooling air passes through the heat exchange area around the spiral pipe 7 in the air cavity 3 and is further cooled by the cooling water flowing in the spiral pipe 7. Multiple sets of inclined flow blocking plates 6 installed on the outer wall of the bearing 5 play a role in guiding and dispersing the air flow. The flow blocking direction of the flow blocking plates 6 is the same as the direction of the air inlet pipes 2, which helps to evenly guide the cooling air to all corners of the air ring housing 1. The flow blocking plates 6 can also increase the turbulence of the air flow, improving the heat exchange efficiency between the cooling air and the object to be cooled. After sufficient heat exchange in the air cavity 3, the cooling air passes out through two sets of air vent holes 8 opened on the inner wall of the air ring housing 1. The air vent holes 8 are arranged in a circular array to ensure that the air flow can evenly and comprehensively cover the object to be cooled. After passing out, the cooling air directly acts on the product of the three-layer coextrusion blow molding machine, taking away the heat on its surface and achieving rapid cooling. Through the above working process, the cooling air ring for the three-layer coextrusion blow molding machine can effectively cool and lower the temperature of the blow molding machine product, improving the production efficiency and product quality.

Claims

1. A cooling air ring for a three-layer co-extrusion blow molding machine, characterized in that: It includes an air ring housing (1). An air cavity (3) is formed in the inner wall of the air ring housing (1). A spiral pipe (7) is arranged in the air cavity (3). Three air inlet pipes (2) are installed inside the outer shell of the air ring housing (1). The three air inlet pipes (2) are inclined. A bearing (5) is installed on the inner wall of the inner shell of the air ring housing (1). A plurality of flow blocking plates (6) are fixedly installed on the outer wall ring of the bearing (5). The flow blocking plates (6) are inclined, and the orientation of the air inlet pipe (2) is the same as the flow blocking orientation of the flow blocking plate (6). Two ventilation holes (8) are formed in the inner wall of the air ring housing (1).

2. The cooling air ring for a three-layer co-extrusion blow molding machine according to claim 1, characterized in that, The ventilation holes (8) are arranged in an annular array, and the two ventilation holes (8) are respectively arranged at both ends of the bearing (5).

3. The cooling air ring for a three-layer coextrusion blow molding machine according to claim 2, wherein, A water inlet pipe (9) is installed in the inner wall of the outer shell of the air ring housing (1), and the water inlet pipe (9) is installed at the upper port of the spiral pipe (7).

4. The cooling air ring for a three-layer co-extrusion blow molding machine according to claim 3, characterized in that, A water outlet pipe (10) is installed in the inner wall of the outer shell of the air ring housing (1), and the water outlet pipe (10) is installed at the lower port of the spiral pipe (7).

5. A cooling air ring for a three-layer coextrusion blow molding machine according to claim 4, characterized in that, A plurality of U-shaped clips (14) are fixedly connected to the inner wall of the outer shell of the air ring housing (1), and the U-shaped clips (14) are clamped with the spiral pipe (7).

6. The cooling air ring for a three-layer co-extrusion blow molding machine according to claim 1, wherein, The upper end of the air ring housing (1) is fixedly installed with a lid (12) through two bolts (13).

7. A cooling air ring for a three-layer coextrusion blow molding machine according to claim 6, characterized in that, An inner sealing ring (4) and an outer sealing ring (11) are fixedly connected to the lower end of the lid (12). The inner sealing ring (4) is slidably connected to the inner wall of the air ring housing (1), and the outer sealing ring (11) is slidably connected to the inner wall of the air ring housing (1).

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