A cooling device for plastic production

Abstract

The utility model discloses a cooling device for plastic production, and mainly includes conveyer, cooling mechanism, vibration rod and bunker, is equipped with a plurality of filter holes in bunker bottom wall, the bunker loaded with plastic parts is displaced to the lower part of cooling mechanism by the conveyer belt, the bunker is vibrated by the collision of vibration rod and cooling mechanism, the cooling mechanism cools the plastic parts, and the contact area of plastic parts, water body and airflow is increased by vibration, the utility model solves the problem that water mist cannot pass through the stacked plastic parts in the plastic cooling operation, and the plastic parts are not cooled uniformly, and the plastic part cooling efficiency can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of plastic product manufacturing, specifically to a cooling device for plastic production. Background Technology

[0002] Cooling devices for plastic production are key equipment in the plastic molding process, primarily used for rapid temperature control of high-temperature plastic parts after injection molding, extrusion, or blow molding. Traditional devices often employ a hybrid cooling mode combining spraying and forced air cooling: atomized cooling water is sprayed onto the surface of the plastic part through an array of nozzles, while a fan accelerates airflow circulation, utilizing the combined effects of water vapor evaporation and air convection to remove heat. These systems are typically equipped with temperature sensor interlocking control, automatically adjusting the water mist volume and airflow speed based on material properties (such as PE, PP, ABS, etc.) and product thickness, ensuring basic cooling requirements while controlling energy consumption. Their open conveyor belt design facilitates integration into the production line.

[0003] However, this cooling method has significant shortcomings when dealing with complex working conditions: the contact efficiency between the cooling medium and the workpiece is limited by the geometric structure. When processing irregularly shaped parts or hollow products, the water and airflow can only act on the exposed surfaces, making it difficult to evenly cover dead corner areas. For stacked small parts (such as preforms and electronic casings), the upper workpieces will block the contact surface of the lower layer, causing the core to cool lag and forming a temperature gradient of "surface hardening and internal overheating." This uneven heat dissipation not only prolongs the overall cooling time and drags down production efficiency, but also easily causes internal stress concentration or shrinkage differences in the product, resulting in quality defects such as warping and cracks. At the same time, the large amount of circulating water mist has insufficient penetration in dense workpiece groups, and in some areas it even forms a vapor barrier that hinders heat exchange, further weakening the cooling efficiency and stability of the system.

[0004] Therefore, this application proposes a cooling device for plastic production that can transmit vibration to stacked plastic parts to change their stacking shape, reduce cooling dead zones, and facilitate water penetration. Utility Model Content

[0005] The purpose of this invention is to provide a cooling device for plastic production, which aims to solve the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for plastic production, comprising: The conveyor belt is designed with synchronous belts installed on both sides, and support plates are installed on the inner side of the conveyor belt; The cooling mechanism is bolted to both sides of the conveyor, and its middle part is positioned on the central shaft of the conveyor belt. It uses spraying and air supply to cool the plastic parts transported by the conveyor belt. The vibrating rod is arranged in a symmetrical array, and its lower end is fixedly connected to the conveyor belt. The vibrating rod adopts a spring extension and contraction form. The vibrating rod vibrates when it contacts and collides with the lower end of the cooling mechanism. The hopper has two ends that are respectively inserted into the sides of the vibrating rods on both sides, and the bottom wall of the hopper has several water filter holes. The conveyor belt moves the hopper loaded with plastic parts to the lower part of the cooling mechanism. The hopper vibrates due to the collision between the vibrating rod and the cooling mechanism. The cooling mechanism cools the plastic parts. The vibration of the hopper increases the contact area between the plastic parts and the water and airflow.

[0007] The vibration rod is installed and vibrates during the movement and contact with the lower end of the cooling mechanism. The vibration is transmitted to the plastic parts in the hopper, causing the plastic parts to vibrate during the spray cooling process. This changes the stacking shape and the state of the plastic parts, making it easier for the water mist to penetrate the plastic stacking area and cool the dead corners of the plastic parts at the same time. This can effectively improve the cooling uniformity of the plastic parts and further improve the cooling efficiency.

[0008] Furthermore, the cooling mechanism includes: The protective cover is bolted to both ends of the conveyor. The water tank is fixedly connected to the upper part of the protective cover, and the lower part of the water tank is connected to the nozzle. A semiconductor cooler, whose output end is inserted into a water tank to cool the water; The air supply duct extends into the protective cover at one end and outwards at the other end. A turbo fan is installed inside the air supply duct to generate cooling airflow.

[0009] Furthermore, it also includes a feeding box, which is set at one end of the conveyor to collect the cooled plastic parts. A feeder is set at the end of the conveyor belt away from the cooling mechanism to feed the plastic parts into the hopper. A circulation box for collecting water is also set at the bottom of the cooling mechanism. The circulation box and the water tank are connected by a water pump and a connecting pipe.

[0010] Furthermore, the upper end of the vibrating rod is provided with a driven protrusion that drives the vibrating rod to vibrate, and the lower end of the protective cover is provided with driving protrusions evenly arranged along the length direction on both sides. The driving protrusions contact the driven protrusions, and the spring extension and retraction of the vibrating rod is provided with a limit to prevent the vibrating rod from detaching or deflecting.

[0011] Furthermore, the controller, conveyor, and cooling mechanism are all electrically connected to the controller.

[0012] Compared with existing technologies, it has the following beneficial effects: This utility model provides a cooling device for plastic production. The device generates vibration during the movement and contact of the vibrating rod at the lower end of the cooling mechanism, and transmits the vibration to the plastic parts in the hopper. This causes the plastic parts to vibrate during the spray cooling process, changing their stacking shape and their own state. This allows the water mist to penetrate the plastic stacking area more easily while simultaneously cooling the dead corners of the plastic parts. This effectively improves the cooling uniformity of the plastic parts and further enhances the cooling efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a cooling device for plastic production according to this utility model; Figure 2 This is a schematic diagram of the conveyor belt connection structure of a cooling device for plastic production according to this utility model; Figure 3 This is a plan view of the cooling mechanism of a cooling device for plastic production according to this utility model; Figure 4 This is a schematic diagram of the cooling mechanism of a cooling device for plastic production according to this utility model from another angle. Figure 5 This is a schematic diagram of the drive bump structure of a cooling device for plastic production according to this utility model.

[0014] In the diagram: 1-Conveyor; 11-Conveyor belt; 12-Support plate; 2-Cooling mechanism; 21-Protective cover; 22-Water tank; 221-Nozzle; 23-Semiconductor cooler; 24-Air supply duct; 25-Drive protrusion; 3-Vibrating rod; 31-Driven protrusion; 4-Hopper; 5-Discharge box; 6-Circulation box; 61-Water pump; 62-Connecting pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1 to 5 As shown, this utility model provides the following technical solution: a cooling device for plastic production; comprising: The conveyor 1 has a synchronous belt 11 installed on both sides, and a support plate 12 is installed on the inner side of the conveyor belt 11. The conveyor 1 is a pulley conveyor commonly used in production lines. It performs conveying operations through the cooperation of a motor and a chain. It is equipped with a control chip, which allows it to be uniformly coordinated by the production line control system. Unlike conventional conveying devices, the conveyor belt 11 is set on both sides, while the middle of the conveyor 1 is hollow to facilitate the passage of water mist and airflow. At the same time, the side of the support plate 12 is fixedly connected to the inner wall of the conveyor 1, and its upper and lower ends are in contact with the conveyor belt 11. This contact is a low-friction contact, and the friction force can be reduced by using lubricant or other means. The support plate 12 can prevent the conveyor belt 11 from deforming during movement and provide support for subsequent vibration.

[0017] The cooling mechanism 2 is bolted to both sides of the conveyor 1, and its middle part is positioned on the central shaft of the conveyor belt 11. It uses spraying and air supply to cool down the plastic parts transported by the conveyor belt 11. The vibrating rod 3 is provided with a symmetrical array, and its lower end is fixedly connected to the conveyor belt 11. The vibrating rod 3 adopts a spring extension form. The vibrating rod 3 vibrates when it contacts and collides with the lower end of the cooling mechanism 2. Specifically, the vibrating rod 3 can be in the form of an outer rod and an inner rod. The lower end of the inner rod is fixedly connected to the conveyor belt 11. The inner wall of the outer rod is slidably connected to the outer wall of the inner rod and a limit is set. The inner rod and the outer rod are connected by a spring, so that the outer rod slides when it is subjected to force and moves in the opposite direction under the spring force, thereby achieving the vibration effect.

[0018] The hopper 4 has its two ends inserted into the sides of the vibrating rods 3 on both sides. The bottom wall of the hopper 4 has several water filter holes. It should be noted that the hopper 4 with different sizes and shapes of water filter holes should be selected for plastic parts of different sizes and shapes to prevent the plastic parts from falling out of the water filter holes. In addition, the hopper 4 has a box-shaped structure and the upright plates on the sides can prevent the plastic parts from being shaken out when the hopper 4 vibrates. The conveyor belt 11 moves the hopper 4 loaded with plastic parts to the lower part of the cooling mechanism 2. The hopper 4 vibrates due to the collision between the vibrating rod 3 and the cooling mechanism 2. The cooling mechanism 2 cools the plastic parts. The hopper 4 increases the contact area between the plastic parts and the water and airflow through vibration.

[0019] As another embodiment, such as Figure 1 , Figure 3 as well as Figure 4 As shown, the cooling mechanism 2 includes: The protective cover 21 is bolted to both ends of the conveyor 1; it is positioned at the rear end of the conveyor 1, and the conveyor 1 is waterproofed at this position to prevent water mist from entering the interior of the conveyor 1.

[0020] Water tank 22 is fixedly connected to the upper end of protective cover 21, and nozzle 221 is connected to the lower part of water tank 22; several sets of nozzles 221 are provided, and pressure nozzles 221 are used to atomize the water flow.

[0021] The semiconductor cooler 23 has its output end inserted into the water tank 22 to cool the water. A cooling fan is provided at the rear end of the semiconductor cooler 23. When it is started, the semiconductor cooler 23 cools the water in the water tank 22, so that the water sprayed from the nozzle 221 can quickly cool the plastic parts.

[0022] The air supply duct 24 extends into the protective cover 21 at one end and outwards at the other end. A turbo fan is installed inside the air supply duct 24 to generate cooling airflow. The end of the air supply duct 24 inside the protective cover 21 extends downwards, and its air outlet is set at an angle downwards, so that the airflow can flow directly to the plastic parts in the hopper 4.

[0023] See Figure 1 It also includes a feeding box 5, which is located at one end of the conveyor 1 to collect the cooled plastic parts.

[0024] When the conveyor belt 11 drives the hopper 4 through the cooling mechanism 2, it rotates downward at the end of the conveyor belt 11, thereby causing the hopper 4 to rotate. The vibrating rod 3 is limited and will not disengage. During the rotation, the hopper 4 pours the plastic parts inside into the discharge box 5 for collection.

[0025] In addition, a feeder is provided at the end of the conveyor belt 11 away from the cooling mechanism 2 to feed plastic parts into the hopper 4. The feeder is a plastic parts production or transportation device, which is located at the upper rear end of the conveyor 1. It is programmed to intermittently feed plastic parts into the hopper 4, continuously conveying high-temperature plastic parts into the hopper 4.

[0026] See Figure 1 and Figure 3 The cooling mechanism 2 is also equipped with a water collection circulation tank 6 at the bottom, and the circulation tank 6 and the water tank 22 are connected to the water tank 22 through a water pump 61 and a connecting pipe 62.

[0027] During the cooling operation of plastic parts, the water sprayed from the nozzle 221 drips down into the circulation chamber through the filter hole in the hopper 4. The water in the circulation chamber is then returned to the water tank 22 through the water pump 61 and the connecting pipe 62 for re-cooling, so that the device does not need to frequently replenish the water tank 22. Furthermore, a filter screen is installed at the water pump 61 to prevent impurities in the circulating water from clogging the nozzle 221.

[0028] As another embodiment, such as Figure 2 and Figure 5 As shown, the upper end of the vibrating rod 3 is provided with a driven protrusion 31 that drives the vibrating rod 3 to vibrate. The driven protrusion 31 has a hemispherical structure and is preferably made of a collision-resistant and low-friction material.

[0029] See Figure 5 Driven protrusions 25 are evenly arranged on both sides of the lower end of the protective cover 21 along the length direction, and the driven protrusions 25 contact the driven protrusions 31. When the conveyor belt 11 drives the vibrating rod 3 to move to the lower end of the protective cover 21, the driven protrusions 25 collide with the driven protrusions 31. The driven protrusions 31 drive the vibrating rod 3 to move downward synchronously and generate vibration through the spring rebound, thereby causing the hopper 4 to vibrate, making it easier for water mist and airflow to pass through the hopper 4 and cool the plastic parts from multiple angles.

[0030] It should be noted that the spring extension mechanism of the vibrating rod 3 is equipped with a limit switch to prevent the vibrating rod 3 from detaching or deflecting.

[0031] In addition, the device also includes a controller, and the conveyor 1 and cooling mechanism 2 are all electrically connected to the controller. The controller can be an 8053 microcontroller to realize the overall logic control of the device.

[0032] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A cooling device for plastic production, characterized in that, include: The conveyor (1) has a synchronous belt (11) installed on both sides, and a support plate (12) is installed on the inner side of the conveyor (11). The cooling mechanism (2) is bolted to both sides of the conveyor (1), and its middle part is positioned on the central shaft of the conveyor belt (11). It uses spraying and air supply to cool down the plastic parts transported by the conveyor belt (11). The vibrating rod (3) is provided with a symmetrical array, and its lower end is fixedly connected to the conveyor belt (11). The vibrating rod (3) adopts a spring extension form. The vibrating rod (3) contacts and collides with the lower end of the cooling mechanism (2) to generate vibration. The hopper (4) has its two ends inserted into the sides of the vibrating rods (3) on both sides respectively, and the bottom wall of the hopper (4) is provided with several water filter holes; The conveyor belt (11) drives the hopper (4) loaded with plastic parts to move to the lower part of the cooling mechanism (2). The hopper (4) vibrates due to the collision between the vibrating rod (3) and the cooling mechanism (2). The cooling mechanism (2) cools the plastic parts. The hopper (4) increases the contact area between the plastic parts and the water and airflow through vibration.

2. The cooling device for plastic production according to claim 1, characterized in that, The cooling mechanism (2) includes: The protective cover (21) is bolted to both ends of the conveyor (1); A water tank (22) is fixedly connected to the upper end of the protective cover (21), and a nozzle (221) is connected to the lower part of the water tank (22); A semiconductor cooler (23) is inserted into the water tank (22) to cool the water. An air supply duct (24) is provided, with one end extending into the interior of the protective cover (21) and the other end extending outward from the protective cover (21). A turbo fan is installed inside the air supply duct (24) to form a cooling airflow.

3. The cooling device for plastic production according to claim 1, characterized in that, It also includes a feeding box (5), which is located at one end of the conveyor (1) to collect the cooled plastic parts.

4. The cooling device for plastic production according to claim 1, characterized in that, The conveyor belt (11) is equipped with a feeder at one end away from the cooling mechanism (2) to feed plastic parts into the hopper (4).

5. The cooling device for plastic production according to claim 2, characterized in that, The cooling mechanism (2) is also equipped with a water collection circulation tank (6) at the bottom. The circulation tank (6) and the water tank (22) are connected by a water pump (61) and a connecting pipe (62).

6. The cooling device for plastic production according to claim 5, characterized in that, The upper end of the vibrating rod (3) is provided with a driven protrusion (31) that drives the vibrating rod (3) to vibrate.

7. The cooling device for plastic production according to claim 6, characterized in that, The protective cover (21) has driving protrusions (25) evenly arranged on both sides of its lower end along the length direction, and the driving protrusions (25) are in contact with the driven protrusions (31).

8. The cooling device for plastic production according to claim 1, characterized in that, The spring extension mechanism of the vibrating rod (3) is equipped with a limit switch to prevent the vibrating rod (3) from detaching or deflecting.

9. The cooling device for plastic production according to claim 1, characterized in that, It also includes a controller, and the conveyor (1) and the cooling mechanism (2) are both electrically connected to the controller.

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