An air-cooled structure for injection molding in plastic processing

Abstract

An air-cooled structure for injection molding in plastic processing effectively solves the problem of high cost. It includes a melting cylinder, an air-cooling shroud, and an annular airflow channel. Multiple air-cooling units are installed on the air-cooling shroud, each including a first air inlet pipe and a second air inlet pipe. A first baffle ring, a second baffle ring, a third baffle ring, and a fourth baffle ring are installed within the annular airflow channel, all positioned at equal intervals along the axis of the melting cylinder. The first air inlet pipe is located between the first and second baffle rings, and the second air inlet pipe is located between the third and fourth baffle rings. An air outlet pipe is located below the air-cooling shroud, between the second and third baffle rings. Multiple first vent pipes are uniformly fixed around the circumference of the second baffle ring, through which gas from the first air inlet pipes exits through the air outlet pipe. Similarly, multiple second vent pipes are uniformly fixed around the circumference of the third baffle ring, through which gas from the second air inlet pipes exits through the air outlet pipe.

Description

Technical Field

[0001] This utility model belongs to the field of plastic processing technology, and in particular relates to an air-cooled structure for injection molding in plastic processing. Background Technology

[0002] In plastic processing, the injection molding process requires the use of a melt barrel. In order to prevent heat accumulation or overheating during the injection molding process, the temperature of the melt barrel needs to be maintained within a certain range. Therefore, an air-cooled melt barrel structure is required.

[0003] In the prior art, patent CN204054560U discloses an air-cooled melt cylinder cover for an injection molding machine, which includes a centrifugal fan and a melt cylinder cover. The melt cylinder cover is fitted on the outside of the melt cylinder. There is an annular airflow channel between the inner wall of the melt cylinder cover and the outer wall of the melt cylinder. An air inlet pipe is provided on the upper side of the annular airflow channel, and an air outlet is provided on the lower side of the annular airflow channel.

[0004] However, the air inlet and outlet of the above-mentioned air-cooled structure are vertically aligned, and each centrifuge can only perform air-cooling on the melting cylinder directly below the air inlet. The air-cooling area is small, and multiple centrifuges, air inlets and outlets are needed to completely cover the annular airflow channel, which is costly and increases the burden on enterprises. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide an air-cooled structure for injection molding in plastic processing, which effectively solves the problem of high cost.

[0006] The technical solution to the problem is as follows: It includes a melting cylinder, with an air-cooling shroud surrounding the cylinder. An annular airflow channel exists between the outer wall of the melting cylinder and the inner wall of the air-cooling shroud. Multiple air-cooling units are installed on the air-cooling shroud. Each air-cooling unit includes a first air inlet pipe and a second air inlet pipe. A first baffle ring, a second baffle ring, a third baffle ring, and a fourth baffle ring are installed within the annular airflow channel, spaced evenly along the axis of the melting cylinder. The first air inlet pipe is located between the first and second baffle rings, and the second air inlet pipe is located between the third and fourth baffle rings. An air outlet pipe is located below the air-cooling shroud, between the second and third baffle rings. Multiple first vent pipes are evenly fixed around the circumference of the second baffle ring, with the right end of each vent pipe facing the melting cylinder. Gas from the first air inlet pipes is discharged through the first vent pipes and then through the air outlet pipes. Multiple second vent pipes are evenly fixed around the circumference of the third baffle ring, with the left end of each vent pipe facing the melting cylinder. Gas from the second air inlet pipes is discharged through the second vent pipes and then through the air outlet pipes.

[0007] Preferably, a centrifugal fan is installed on the air-cooled cover, and the centrifugal fan is connected to the first air inlet pipe and the second air inlet pipe via a tee.

[0008] Preferably, the air-cooled cover and the melting cylinder are fixedly connected by multiple bolts.

[0009] This invention has the following advantages over traditional equipment: Each air-cooling unit uses a centrifugal fan, which cleverly controls the first air inlet pipe and the second air inlet pipe. This not only dissipates heat from the melting cylinder directly below the first and second air inlet pipes, but also simultaneously dissipates heat from the melting cylinder between the first and second air inlet pipes. This greatly extends the heat dissipation area of ​​the melting cylinder, resulting in good heat dissipation, reduced production costs, and economic practicality. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the front view of this utility model;

[0011] Figure 2 yes Figure 1 A magnified schematic diagram of a portion of the image;

[0012] Figure 3 This is a schematic diagram of the three-dimensional structure of the second retaining ring in this utility model.

[0013] Reference numerals in the attached drawings: 1. Melting cylinder; 2. Air-cooled shroud; 3. Annular airflow channel; 4. First air inlet pipe; 5. Second air inlet pipe; 6. First baffle ring; 7. Second baffle ring; 8. Third baffle ring; 9. Fourth baffle ring; 10. Air outlet pipe; 11. First vent pipe; 12. Second vent pipe; 13. Centrifugal fan. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0015] Depend on Figures 1 to 3 Provided is an air-cooled structure for injection molding in plastic processing, including a melt cylinder 1, an air-cooling shroud 2 surrounding the melt cylinder 1, an annular airflow channel 3 between the outer wall of the melt cylinder 1 and the inner wall of the air-cooling shroud 2, and multiple air-cooling units mounted on the air-cooling shroud 2, each air-cooling unit including a first air inlet pipe 4 and a second air inlet pipe 5. A first baffle ring 6, a second baffle ring 7, a third baffle ring 8, and a fourth baffle ring 9 are installed within the annular airflow channel 3, located within the air-cooling units. The first baffle ring 6, the second baffle ring 7, the third baffle ring 8, and the fourth baffle ring 9 are equally spaced along the axial direction of the melt cylinder 1. The first air inlet pipe 4 is located within the first baffle ring. Between the second baffle ring 6 and the second baffle ring 7, the second air inlet pipe 5 is located between the third baffle ring 8 and the fourth baffle ring 9. Below the air-cooled shroud 2, there is an air outlet pipe 10 located between the second baffle ring 7 and the third baffle ring 8. Multiple first vent pipes 11 are evenly fixed around the circumference of the second baffle ring 7. The right end of the first vent pipe 11 faces the melting cylinder 1. The gas from the first air inlet pipe 4 is discharged from the air outlet pipe 10 through the first vent pipe 11. Multiple second vent pipes 12 are evenly fixed around the circumference of the third baffle ring 8. The left end of the second vent pipe 12 faces the melting cylinder 1. The gas from the second air inlet pipe 5 is discharged from the air outlet pipe 10 through the second vent pipe 12.

[0016] A centrifugal fan 13 is installed on the air-cooled cover 2. The centrifugal fan 13 is connected to the first air inlet pipe 4 and the second air inlet pipe 5 via a tee.

[0017] The air-cooled cover 2 and the molten glue cylinder 1 are fixedly connected by multiple bolts.

[0018] In use, each air-cooling unit is equipped with a corresponding temperature sensor. When the surface temperature of the melting cylinder 1 exceeds the required range, the computer automatically starts the centrifugal fan 13 of the corresponding air-cooling unit. The centrifugal fan 13 delivers cold air through a three-way valve to the inside of the first air inlet pipe 4 and the second air inlet pipe 5. The first air inlet pipe 4 delivers the cold air to the annular airflow channel 3 between the first baffle ring 6 and the second baffle ring 7, which can quickly cool down the melting cylinder 1 at this point. Since multiple first vent pipes 11 are evenly fixed on the circumference of the second baffle ring 7, with the right end of the first vent pipe 11 facing the melting cylinder 1, the cold air on the left side of the second baffle ring 7 delivers excess heat through the first vent pipe 11 to the space between the second baffle ring 7 and the third baffle ring 8, and then discharges it through the exhaust pipe. At the same time, the second air inlet pipe 5 delivers cold air to the space between the third baffle ring 8 and the fourth baffle ring 9. The annular airflow channel 3 can quickly cool down the melting cylinder 1. Since multiple second vent pipes 12 are evenly fixed on the circumference of the third baffle ring 8, with the left end of the second vent pipe 12 facing the melting cylinder 1, the cold air on the right side of the third baffle ring 8 transports excess heat through the second vent pipe 12 to the space between the second baffle ring 7 and the third baffle ring 8, and then discharges it through the exhaust pipe. Since the first air inlet pipe 4 and the second air inlet pipe 5 are symmetrically designed and have the same structure, and the first vent pipe 11 and the second vent pipe 12 have the same number and structure, it effectively ensures that the hot air is quickly discharged from the exhaust pipe. The structural design of the first vent pipe 11 and the second vent pipe 12 effectively increases the airflow rate. The first vent pipe 11 and the second vent pipe 12 face the melting cylinder 1 at the same time, effectively carrying away the heat from the melting cylinder 1 in the second baffle ring 7 and the third baffle ring 8, achieving the effect of rapid cooling.

[0019] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A wind-cooled structure for injection molding in plastic processing, comprising a melting cylinder (1), an air-cooling shroud (2) surrounding the melting cylinder (1), an annular airflow channel (3) between the outer wall of the melting cylinder (1) and the inner wall of the air-cooling shroud (2), and multiple air-cooling units mounted on the air-cooling shroud (2), characterized in that, The air-cooled unit includes a first air inlet pipe (4) and a second air inlet pipe (5). A first baffle ring (6), a second baffle ring (7), a third baffle ring (8), and a fourth baffle ring (9) are installed within the annular airflow channel (3). These baffle rings are evenly spaced along the axis of the melt-bonding cylinder (1). The first air inlet pipe (4) is located between the first baffle ring (6) and the second baffle ring (7). The second air inlet pipe (5) is located between the third baffle ring (8) and the fourth baffle ring (9). The air-cooled shroud (2) is also included. Below is an air outlet pipe (10) located between the second baffle ring (7) and the third baffle ring (8). Multiple first vent pipes (11) are evenly fixed around the circumference of the second baffle ring (7). The right end of the first vent pipe (11) faces the melting cylinder (1). Gas from the first inlet pipe (4) is discharged from the air outlet pipe (10) through the first vent pipe (11). Multiple second vent pipes (12) are evenly fixed around the circumference of the third baffle ring (8). The left end of the second vent pipe (12) faces the melting cylinder (1). Gas from the second inlet pipe (5) is discharged from the air outlet pipe (10) through the second vent pipe (12).

2. The air-cooled structure for injection molding in plastic processing according to claim 1, characterized in that, A centrifugal fan (13) is installed on the air-cooled cover (2), and the centrifugal fan (13) is connected to the first air inlet pipe (4) and the second air inlet pipe (5) via a tee.

3. The air-cooled structure for injection molding in plastic processing according to claim 1, characterized in that, The air-cooled cover (2) and the molten glue cylinder (1) are fixedly connected by multiple bolts.

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