Degradable plastic bucket extrusion setting cooling device

Abstract

The utility model relates to the technical field of plastic barrel extrusion cooling, especially to a degradable plastic barrel extrusion setting cooling device, including air cooling mould assembly, still including upper mould, the upper portion of air cooling mould assembly is provided with upper mould, and air cooling mould assembly is connected with upper mould bolt. The utility model passes through the low temperature carbon dioxide gas from the front end's cooling gas inlet pipe and passes in the low temperature gas cooling through the groove and quickly absorbs the heat of plastic barrel outer wall mould ren, thereby gives plastic barrel outer wall mould ren and its inside plastic barrel quick cooling, owing to the low temperature gas cooling through the groove size is bigger compared with traditional water cooling channel, reuses high speed low temperature airflow to cool down quickly, compared with the traditional water cooling heat dissipation cooling speed is faster, greatly shortens the time of mould cooling setting.

Description

Technical Field

[0001] This utility model relates to the field of plastic bucket extrusion cooling technology, and in particular to a biodegradable plastic bucket extrusion shaping and cooling device. Background Technology

[0002] In today's plastics manufacturing industry, with the increasing awareness of environmental protection, the production of biodegradable plastic buckets has received more and more attention. In the production process of biodegradable plastic buckets, the extrusion, shaping and cooling device is a crucial link, and its performance directly affects the production efficiency and quality of plastic buckets.

[0003] Most existing extrusion cooling devices for biodegradable plastic bucket production use traditional water cooling. However, this method has significant drawbacks. The water flow channels are generally narrow, which limits the water flow speed. When the water flow speed is low, the cooling efficiency of the water-cooled extrusion die is greatly reduced. From the perspective of heat exchange principles, fast-flowing water can more efficiently remove heat from the die and the plastic bucket blank, achieving rapid cooling. However, in existing devices, the slow water flow results in insufficient heat exchange, making it difficult to quickly reduce the die temperature. The extended setting time means reduced equipment turnover efficiency, reduced output per unit time, and thus increased production costs. Utility Model Content

[0004] In order to overcome the problem that existing biodegradable plastic bucket extrusion shaping and cooling devices have slow cooling speed of water-cooled extrusion molds and long plastic bucket shaping time due to the small water flow channel and low water flow speed of traditional water cooling, this utility model provides a biodegradable plastic bucket extrusion shaping and cooling device.

[0005] The technical solution is as follows: A biodegradable plastic bucket extrusion shaping and cooling device includes an air-cooling mold assembly and an upper mold; the upper mold is disposed above the air-cooling mold assembly, and the air-cooling mold assembly is connected to the upper mold by a pin; the air-cooling mold assembly includes a lower mold, a plastic bucket outer wall mold core, a low-temperature gas cooling passage groove, a cooling gas inlet pipe, a mold closing positioning groove, a plastic bucket bottom mold core, a mold mounting groove, a plastic bucket mouth forming mold, and a plastic bucket mouth groove; the lower mold contains a plastic bucket outer wall mold core, and the plastic bucket outer wall mold core is integrally formed with the lower mold; a low-temperature gas cooling passage groove is disposed around the outer periphery of the plastic bucket outer wall mold core.

[0006] Furthermore, the low-temperature gas cooling channel is integrally formed with the lower mold and the outer wall mold core of the plastic bucket; both ends of the lower mold are provided with cooling gas inlet pipes, and the cooling gas inlet pipes are connected to the low-temperature gas cooling channel. Low-temperature carbon dioxide is introduced into the low-temperature gas cooling channel from the front cooling gas inlet pipe and then discharged from the rear cooling gas inlet pipe.

[0007] Furthermore, a bottom mold core for the plastic bucket is provided at the lower end of the outer wall mold core, and the bottom mold core, the outer wall mold core, and the lower mold are integrally formed.

[0008] Furthermore, a plastic bucket mouth forming mold is provided on the outer side of the outer wall mold core of the plastic bucket, and the plastic bucket mouth forming mold is integrally formed with the lower mold.

[0009] Furthermore, a plastic bucket opening groove is provided between the plastic bucket opening forming mold and the plastic bucket outer wall mold core, and the plastic bucket opening groove is integrally formed with the lower mold and the plastic bucket outer wall mold core.

[0010] Furthermore, the lower mold is provided with mold closing positioning grooves at all four corners, and the mold closing positioning grooves are integrally formed with the lower mold.

[0011] Furthermore, mold mounting slots are provided on both sides of the outer wall mold core of the plastic bucket, and the mold mounting slots are integrally formed with the lower mold.

[0012] The beneficial effects are as follows: This invention utilizes a low-temperature carbon dioxide gas injected into a low-temperature gas cooling channel via a front-end cooling gas inlet pipe. Inside the channel, the low-temperature gas rapidly contacts the outer mold core of the plastic bucket, quickly absorbing heat from the core surface due to its low-temperature properties. Because the outer mold core is in close contact with the internally molded plastic bucket, the rapid heat dissipation from the mold core causes the internal plastic bucket to cool down simultaneously. Compared to traditional water-cooling channels, the low-temperature gas cooling channel is more spacious, providing greater flow space for the low-temperature carbon dioxide gas. When the high-speed low-temperature airflow flows within the channel, it forms a larger heat exchange surface with the outer mold core of the plastic bucket, accelerating heat transfer efficiency. This design, based on high-speed gas flow and large-space heat dissipation, enables the mold to cool much faster than traditional water-cooling methods, significantly shortening the time required for mold cooling and setting.

[0013] By setting up the mold mounting slot, the mold mounting slot is used as the mounting hole for the mold feeding mechanism of the extruder, making the assembly of the lower mold more stable and efficient. Attached Figure Description

[0014] Figure 1 This is a three-dimensional side view of the overall exploded structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall exploded three-dimensional structure of this utility model;

[0016] Figure 3 This is a top-view three-dimensional structural diagram of the overall exploded structure of this utility model;

[0017] Figure 4 This is a top-view three-dimensional structural diagram of the air-cooled mold assembly of this utility model;

[0018] Figure 5 This is a cross-sectional perspective view of the air-cooled mold assembly of this utility model.

[0019] In the attached drawings, the following are the reference numerals: 1. Air-cooled mold assembly; 2. Upper mold; 101. Lower mold; 102. Outer wall mold core of the plastic bucket; 103. Low-temperature gas cooling passage groove; 104. Cooling gas inlet pipe; 105. Mold closing positioning groove; 106. Bottom mold core of the plastic bucket; 107. Mold mounting groove; 108. Plastic bucket mouth forming mold; 109. Plastic bucket mouth groove. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Example 1

[0021] like Figures 1-5 As shown, a biodegradable plastic bucket extrusion shaping and cooling device includes an air-cooled mold assembly 1 and an upper mold 2. The upper mold 2 is disposed above the air-cooled mold assembly 1, and the air-cooled mold assembly 1 and the upper mold 2 are connected by a pin. The air-cooled mold assembly 1 includes a lower mold 101, a plastic bucket outer wall mold core 102, a low-temperature gas cooling passage groove 103, a cooling gas inlet pipe 104, a mold closing positioning groove 105, a plastic bucket bottom mold core 106, a mold mounting groove 107, a plastic bucket mouth forming mold 108, and a plastic bucket mouth groove 109. The plastic bucket outer wall mold core 102 is disposed inside the lower mold 101, and the plastic bucket outer wall mold core 102 is integrally formed with the lower mold 101. The low-temperature gas cooling passage groove 103 is disposed around the outer periphery of the plastic bucket outer wall mold core 102.

[0022] The low-temperature gas cooling channel 103 is integrally formed with the lower mold 101 and the outer wall mold core 102 of the plastic bucket; both ends of the lower mold 101 are provided with cooling gas inlet pipes 104, and the cooling gas inlet pipes 104 are connected to the low-temperature gas cooling channel 103. Low-temperature carbon dioxide is introduced into the low-temperature gas cooling channel 103 from the front cooling gas inlet pipe 104 and then discharged from the rear cooling gas inlet pipe 104.

[0023] The lower end of the outer wall mold core 102 of the plastic bucket is provided with a bottom mold core 106 of the plastic bucket, and the bottom mold core 106 of the plastic bucket is integrally formed with the outer wall mold core 102 of the plastic bucket and the lower mold 101.

[0024] A plastic bucket mouth forming mold 108 is provided on the outer side of the outer wall mold core 102 of the plastic bucket, and the plastic bucket mouth forming mold 108 is integrally formed with the lower mold 101.

[0025] A plastic bucket mouth groove 109 is provided between the plastic bucket mouth forming mold 108 and the plastic bucket outer wall mold core 102, and the plastic bucket mouth groove 109 is integrally formed with the lower mold 101 and the plastic bucket outer wall mold core 102.

[0026] Low-temperature carbon dioxide gas is injected into the low-temperature gas cooling channel 103 through the front-end cooling gas inlet pipe 104. Inside the channel, the low-temperature gas rapidly contacts the outer wall of the plastic bucket mold core 102, quickly absorbing heat from the core surface due to its low temperature. Because the outer wall of the plastic bucket mold core 102 is in close contact with the internally molded plastic bucket, the rapid heat dissipation from the mold core causes the internal plastic bucket to cool down simultaneously. Compared to traditional water-cooling channels, the low-temperature gas cooling channel 103 is more spacious, providing greater flow space for the low-temperature carbon dioxide gas. When the high-speed low-temperature airflow flows within the channel, it forms a larger heat exchange surface with the outer wall of the plastic bucket mold core 102, accelerating heat transfer efficiency. This design, based on high-speed gas flow and large-space heat dissipation, enables the mold to cool down much faster than traditional water-cooling methods, significantly shortening the time required for mold cooling and setting. Example 2

[0027] Based on Example 1, such as Figures 1-5 As shown, the lower mold 101 is provided with mold closing positioning grooves 105 at all four corners, and the mold closing positioning grooves 105 are integrally formed with the lower mold 101. The mold closing positioning grooves 105 are used for pin connection and positioning of the air-cooled mold assembly 1 and the upper mold 2, thereby improving the positioning accuracy during mold closing.

[0028] Both sides of the outer wall mold core 102 of the plastic bucket are provided with mold mounting grooves 107, and the mold mounting grooves 107 are integrally formed with the lower mold 101.

[0029] By setting the mold mounting groove 107, the mold mounting groove 107 is used as the mounting hole for the mold feeding mechanism of the extruder, making the assembly of the lower mold 101 more stable and efficient.

Claims

1. A biodegradable plastic bucket extrusion shaping and cooling device, comprising an air-cooled mold assembly (1), characterized in that: It also includes an upper mold (2); the upper mold (2) is provided above the air-cooled mold assembly (1), and the air-cooled mold assembly (1) is connected to the upper mold (2) by a pin; the air-cooled mold assembly (1) includes a lower mold (101), a plastic bucket outer wall mold core (102), a low-temperature gas cooling passage groove (103), a cooling gas inlet pipe (104), a mold closing positioning groove (105), a plastic bucket bottom mold core (106), a mold mounting groove (107), a plastic bucket mouth forming mold (108), and a plastic bucket mouth groove (109); the lower mold (101) is provided with a plastic bucket outer wall mold core (102) inside, and the plastic bucket outer wall mold core (102) is integrally formed with the lower mold (101); a low-temperature gas cooling passage groove (103) is provided around the outer side of the plastic bucket outer wall mold core (102).

2. The biodegradable plastic bucket extrusion shaping and cooling device according to claim 1, characterized in that: The low-temperature gas cooling channel (103) is integrally formed with the lower mold (101) and the outer wall mold core (102) of the plastic bucket; both ends of the lower mold (101) are provided with cooling gas inlet pipes (104), and the cooling gas inlet pipes (104) are connected to the low-temperature gas cooling channel (103). Low-temperature carbon dioxide is introduced into the low-temperature gas cooling channel (103) from the front cooling gas inlet pipe (104) and then discharged from the rear cooling gas inlet pipe (104).

3. The biodegradable plastic bucket extrusion shaping and cooling device according to claim 1, characterized in that: The lower end of the plastic bucket outer wall mold core (102) is provided with a plastic bucket bottom mold core (106), and the plastic bucket bottom mold core (106) is integrally formed with the plastic bucket outer wall mold core (102) and the lower mold (101).

4. The biodegradable plastic bucket extrusion shaping and cooling device according to claim 1, characterized in that: A plastic bucket mouth forming mold (108) is provided on the outside of the outer wall mold core (102) of the plastic bucket, and the plastic bucket mouth forming mold (108) is integrally formed with the lower mold (101).

5. The biodegradable plastic bucket extrusion shaping and cooling device according to claim 4, characterized in that: A plastic bucket mouth forming mold (108) is provided between the plastic bucket mouth forming mold (108) and the plastic bucket outer wall mold core (102), and the plastic bucket mouth groove (109) is integrally formed with the lower mold (101) and the plastic bucket outer wall mold core (102).

6. The biodegradable plastic bucket extrusion shaping and cooling device according to claim 1, characterized in that: The lower mold (101) is provided with mold closing positioning grooves (105) at all four corners, and the mold closing positioning grooves (105) are integrally formed with the lower mold (101).

7. The biodegradable plastic bucket extrusion shaping and cooling device according to claim 1, characterized in that: Both sides of the outer wall mold core (102) of the plastic bucket are provided with mold mounting grooves (107), and the mold mounting grooves (107) are integrally formed with the lower mold (101).

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