Cooling and drying device for PET plastic bottle blow molding

Abstract

This utility model discloses a cooling and drying device for blow molding PET plastic bottles, including a base, a cooling and drying chamber, a gripping plate, a mounting plate, and a placement platform. The cooling and drying chamber is mounted on the base. The mounting plate is installed on the inner top wall of the cooling and drying chamber. A motor A is mounted on the mounting plate, and a lead screw is mounted on the power shaft end of motor A. A ball bearing nut is threaded onto the lead screw, and an electric telescopic rod is mounted on the ball bearing nut. An installation box is mounted on one end of the electric telescopic rod, and a gripping plate is mounted on the installation box. An insertion rod is mounted on the bottom surface of the gripping plate, and a suction cup is mounted on one end of the insertion rod. A suction pump is mounted on the gripping plate, and the suction pump is connected to the suction cup via an air pipe. A water tank is installed in the cooling and drying chamber. This utility model avoids the problem of plastic bottles easily falling off the rod during the rotation and water droplet spraying process, allowing the PET plastic bottles to be immersed in cooling water in the water tank for cooling, effectively improving cooling efficiency and effect.

Description

Technical Field

[0001] This utility model relates to the field of blow molding cooling and drying equipment, specifically a cooling and drying equipment for blow molding PET plastic bottles. Background Technology

[0002] PET plastic is a milky white or light yellow, highly crystalline polymer with a smooth, glossy surface. It possesses excellent physical and mechanical properties over a wide temperature range and is used to manufacture hollow thermoplastic parts through blow molding. Well-known blow-molded products include bottles, barrels, cans, boxes, and all containers for packaging food, beverages, cosmetics, pharmaceuticals, and daily necessities. Large blow-molded containers are commonly used for packaging chemical products, lubricants, and bulk materials. After blow molding, the plastic product needs to be cooled and dried to maintain its shape.

[0003] A search revealed that Chinese utility model patent CN215434968U discloses a cooling and drying device for blow molding PET plastic bottles. The device includes a main body comprising a water tank. From left to right, a motor, a processing chamber, and a support block are fixedly connected to the water tank. A screw penetrating the processing chamber is installed between the output end of the motor and the support block. A threaded sleeve is threadedly connected to the screw and slidably connected to the water tank. A second motor is fixedly connected to the upper part of the threaded sleeve. A conical platform is fixedly connected to the output shaft of the second motor. A sleeve rod is threadedly connected to the conical platform. From left to right, a spraying mechanism and a drying mechanism are installed on the upper part of the processing chamber. In use, the plastic bottle is placed on the sleeve rod, and the rotation of the screw controls the conical platform to pass sequentially through the spraying mechanism and the drying mechanism, thus cooling and drying the plastic bottle.

[0004] The technical solution in the application still has shortcomings: the plastic bottles on the sleeve are prone to falling off during the rotation and water droplet throwing process, and the cooling water sprayed by the spraying mechanism cannot guarantee a comprehensive and uniform spray coverage of the outer surface of each plastic bottle, resulting in insufficient cooling in some areas and affecting the cooling efficiency and effect. Summary of the Invention

[0005] The purpose of this invention is to provide a cooling and drying device for blow molding PET plastic bottles to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cooling and drying device for blow molding PET plastic bottles, comprising a base, a cooling and drying chamber, a gripping plate, a mounting plate, and a placement platform. The cooling and drying chamber is mounted on the base. The mounting plate is mounted on the inner top wall of the cooling and drying chamber. A motor A is mounted in the mounting plate. A lead screw is mounted on the power shaft end of the motor A. A ball nut is threaded onto the lead screw. An electric telescopic rod is mounted on the ball nut. An installation box is mounted on one end of the electric telescopic rod. A gripping plate is mounted on the installation box. An insertion rod is mounted on the bottom surface of the gripping plate. A suction cup is mounted on one end of the insertion rod. A suction pump is mounted on the gripping plate. The suction pump is connected to the suction cup through an air pipe. A water tank is installed in the cooling and drying chamber.

[0007] Using the above technical solution, PET plastic bottles are placed with their openings facing upwards in the placement slots on the placement platform. Motor A drives the lead screw to rotate, causing the ball nut to move axially along the lead screw, thereby adjusting the position of the gripping plate. The gripping plate is then moved above the placement slots. Subsequently, the electric telescopic rod extends, inserting the insertion rod through the bottle opening of the PET plastic bottle, ensuring close contact between the suction cup and the inner bottom wall of the PET plastic bottle. Then, the suction pump starts, drawing air through the air pipe to firmly adhere the suction cup to the inner bottom wall of the PET plastic bottle, providing a stable grip. The electric telescopic rod then retracts, lifting the PET plastic bottle from the placement slots. Motor A drives the lead screw again, transferring the PET plastic bottle to the top of the water tank in the cooling drying oven. At this point, the electric telescopic rod extends, immersing the PET plastic bottle in the cooling water in the tank. The cooling water cools the outer surface of the PET plastic bottle. The water level in the tank can be adjusted according to the height of the PET plastic bottle. The bottle opening is extended beyond the PET plastic bottle to prevent water from entering the interior. After cooling, the electric telescopic rod retracts to lift the PET plastic bottle, motor A starts, and the PET plastic bottle is transferred for drying. Then, the gripping plate moves above the storage box, the suction pump stops sucking air, the suction cup separates from the inner bottom wall of the PET plastic bottle, and the PET plastic bottle falls into the storage box for storage. By setting a movable and telescopic gripping mechanism in the cooling and drying box, the suction cup and suction pump are used to stably grip the PET plastic bottle, avoiding the problem of the plastic bottle easily falling off during the rotation and water droplet shaking process on the rod. The PET plastic bottle is immersed in the cooling water in the water tank for cooling. The cooling water can completely cover its outer surface. Compared with the cooling water sprayed by the spray mechanism, this immersion cooling method can ensure that the outer surface of each PET plastic bottle is in full contact with the cooling water, avoiding the situation where some areas are not cooled enough due to uneven spraying, effectively improving the cooling efficiency and cooling effect.

[0008] Preferably, fans are installed in the windows on both sides of the cooling drying chamber, and filters are installed in the windows of the cooling drying chamber.

[0009] Using the above technical solution, after the PET plastic bottle is cooled and dewatered, it is moved between the fans installed on both sides of the cooling and drying box. The fans start and air enters through the window, passes through the filter screen and blows onto the PET plastic bottle to dry it. The gripping plate drives the PET plastic bottle to rotate, so that the outer surface of the PET plastic bottle is in full contact with the flowing air, which accelerates the evaporation of moisture.

[0010] Preferably, a motor B is installed in the mounting box, and the power shaft end of the motor B is connected to the gripping plate.

[0011] Using the above technical solution, after the PET plastic bottle is cooled, the motor B installed in the mounting box starts and drives the gripping plate to rotate through the power shaft. This causes the PET plastic bottle on the gripping plate to rotate cold, and centrifugal force is used to quickly throw off the water droplets attached to the outer surface of the PET plastic bottle. The thrown-off water droplets drip off under the action of gravity, effectively reducing the residual moisture on the surface of the PET plastic bottle, laying the foundation for subsequent air drying operations and improving the overall drying efficiency.

[0012] Preferably, the inner bottom surface of the cooling drying box is provided with a drainage hole, and a water tank is provided in the inner bottom of the cooling drying box. The drainage hole is connected to the water tank, a filter plate is installed in the water tank, and the other end of the connecting pipe installed on the water tank is connected to the water tank. A water pump is installed on the connecting pipe.

[0013] Using the above technical solution, the water generated during the cooling, spin-drying and drying process of PET plastic bottles in the cooling and drying oven will flow into the water tank through the drain hole. The filter plate in the water tank can initially filter impurities in the water. Then, the water pump starts and transports the filtered water in the water tank to the water tank for recycling through the connecting pipe, thus saving water resources.

[0014] Preferably, a placement platform is installed on the base, and a placement slot is provided on the placement platform.

[0015] By adopting the above technical solution, the placement slots on the placement platform can simultaneously hold multiple PET plastic bottles. With the movement and gripping action of the gripping mechanism, continuous cooling and drying of multiple PET plastic bottles can be achieved, effectively improving the working efficiency of the equipment and meeting the needs of mass production.

[0016] Preferably, a storage box is placed on the base.

[0017] Using the above technical solution, the storage box is used to centrally store PET plastic bottles after cooling and drying, which facilitates subsequent unified transportation and processing.

[0018] Compared with the prior art, the beneficial effects of this utility model are: By installing a movable and retractable gripping mechanism inside the cooling and drying chamber, the suction cups, in conjunction with a suction pump, can stably grip PET plastic bottles, preventing the bottles from easily falling off the sleeve during the rotation and water droplet spraying process.

[0019] ET plastic bottles are immersed in cooling water in a water tank for cooling. The cooling water can completely cover the outer surface of the bottle. Compared with the cooling water sprayed by the spray mechanism, this immersion cooling method can ensure that the outer surface of each PET plastic bottle can fully contact the cooling water, avoiding insufficient cooling in some areas due to uneven spraying, and effectively improving cooling efficiency and cooling effect. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the side end face structure of this utility model; Figure 4 This is an enlarged schematic diagram of the rotating structure of this utility model.

[0021] In the diagram: 1. Base; 2. Cooling and drying oven; 3. Motor A; 4. Lead screw; 5. Ball bearing nut; 6. Electric telescopic rod; 7. Mounting box; 8. Gripping plate; 9. Suction pump; 10. Insert rod; 11. Suction cup; 12. Mounting plate; 13. Placement platform; 14. Fan; 15. Storage box; 16. Water tank; 17. Connecting pipe; 18. Water pump; 19. Water trough; 20. Drain hole; 21. Filter plate; 22. Placement slot; 23. Filter screen; 24. Motor B. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figures 1-4This utility model provides an embodiment of a cooling and drying device for blow molding PET plastic bottles, comprising a base 1, a cooling and drying chamber 2, a gripping plate 8, a mounting plate 12, and a placement platform 13. The cooling and drying chamber 2 is mounted on the base 1. The mounting plate 12 is mounted on the inner top wall of the cooling and drying chamber 2. A motor A3 is mounted in the mounting plate 12. A lead screw 4 is mounted on the power shaft end of the motor A3. A ball nut 5 is threaded onto the lead screw 4. An electric telescopic rod 6 is mounted on the ball nut 5. A mounting box 7 is mounted on one end of the electric telescopic rod 6. The gripping plate 8 is mounted on the mounting box 7. An insertion rod 10 is mounted on the bottom surface of the gripping plate 8. A suction cup 11 is mounted on one end of the insertion rod 10. A suction pump 9 is mounted on the gripping plate 8. The suction pump 9 is connected to the suction cup 11 through an air pipe. A water tank 16 is installed in the cooling and drying chamber 2. PET plastic bottles are placed with their openings facing upwards in the placement slots 22 on the placement platform 13. Motor A3 drives the lead screw 4 to rotate, causing the ball nut 5 to move axially along the lead screw 4, thereby adjusting the position of the gripping plate 8. The gripping plate 8 is then moved above the placement slots 22. Subsequently, the electric telescopic rod 6 extends, allowing the insertion rod 10 to be inserted into the bottle opening, ensuring that the suction cup 11 makes tight contact with the inner bottom wall of the PET plastic bottle. Then, the suction pump 9 starts to draw air, which, through the air tube, firmly adheres the suction cup 11 to the inner bottom of the PET plastic bottle. The electric telescopic rod 6 firmly grips the PET plastic bottle, then retracts, lifting the bottle from the placement slot 22. Motor A3 then drives the lead screw 4 to rotate, transferring the bottle above the water tank 16 in the cooling and drying oven 2. At this point, the electric telescopic rod 6 extends, immersing the bottle in the cooling water within the tank 16. The cooling water cools the outer surface of the bottle. The water level in the tank 16 can be adjusted according to the height of the bottle. The water level should not exceed the opening of the PET bottle to prevent water from entering the interior. After cooling, the electric telescopic rod 6 retracts to lift the PET bottle, motor A3 starts, and the PET bottle is transferred for drying. Then, the gripping plate 8 moves above the storage box 15, the suction pump 9 stops suction, the suction cup 11 separates from the bottom wall of the PET bottle, and the PET bottle falls into the storage box 15 for storage. By setting a movable and telescopic gripping mechanism in the cooling and drying chamber, the suction cup and suction pump are used to stably grip the PET bottle, avoiding the problem of the bottle falling off the rod during the rotation and water droplet shaking process. The PET bottle is immersed in the cooling water in the water tank 16 for cooling. The cooling water can completely cover its outer surface. Compared with the cooling water sprayed by the spray mechanism, this immersion cooling method can ensure that the outer surface of each PET bottle can fully contact the cooling water, avoiding the situation where some areas are not cooled enough due to uneven spraying, effectively improving the cooling efficiency and cooling effect.

[0024] Fans 14 are installed in the windows on both sides of the cooling and drying chamber 2, and filters 23 are installed in the windows of the cooling and drying chamber 2. After the PET plastic bottles are cooled and dewatered, they are moved between the fans 14 installed on both sides of the cooling and drying chamber 2. The fans 14 are activated, and air enters from the windows, passes through the filters 23, and blows onto the PET plastic bottles to perform a blowing and drying operation. In conjunction with the gripping plate 8, the PET plastic bottles are rotated, so that the outer surface of the PET plastic bottles is in full contact with the flowing air, which accelerates the evaporation of moisture. After the PET plastic bottles are cooled, the motor B24 installed in the mounting box 7 is started, which drives the gripping plate 8 to rotate through the power shaft. This causes the PET plastic bottles on the gripping plate 8 to rotate, and the centrifugal force is used to quickly dewater the water droplets attached to the outer surface of the PET plastic bottles. The dewatered water droplets drip off under the action of gravity, effectively reducing the residual moisture on the surface of the PET plastic bottles, laying the foundation for subsequent blowing and drying operations, and improving the overall drying efficiency.

[0025] The cooling and drying oven 2 has drainage holes 20 on its inner bottom surface and a water tank 19 in its inner bottom. The drainage holes 20 are connected to the water tank 19, and a filter plate 21 is installed in the water tank 19. The other end of a connecting pipe 17 installed on the water tank 19 is connected to a water tank 16, and a water pump 18 is installed on the connecting pipe 17. The water generated during the cooling, spin-drying, and drying process of the PET plastic bottles in the cooling and drying oven 2 flows into the water tank 19 through the drainage holes 20. The filter plate 21 in the water tank 19 can initially filter impurities in the water. Then, the water pump 18 starts and transports the filtered water in the water tank 19 to the water tank 16 for recycling through the connecting pipe 17, thus saving water resources.

[0026] A placement platform 13 is mounted on the base 1, and a placement slot 22 is provided on the placement platform 13. The placement slot 22 on the placement platform 13 can hold multiple PET plastic bottles at the same time. With the movement and gripping action of the gripping mechanism, continuous cooling and drying treatment of multiple PET plastic bottles can be achieved, effectively improving the working efficiency of the equipment and meeting the needs of mass production.

[0027] A storage box 15 is placed on the base 1. The storage box 15 is used to centrally store PET plastic bottles after cooling and drying, which facilitates subsequent unified transportation and processing.

[0028] Working principle: PET plastic bottles are placed with their openings facing upwards in the placement slot 22 on the placement platform 13. Motor A3 drives the lead screw 4 to rotate, causing the ball nut 5 to move axially along the lead screw 4, thereby adjusting the position of the gripping plate 8. The gripping plate 8 is then moved above the placement slot 22. Subsequently, the electric telescopic rod 6 extends, allowing the insertion rod 10 to be inserted through the bottle opening, ensuring the suction cup 11 makes tight contact with the inner bottom wall of the PET plastic bottle. Then, the suction pump 9 starts suction, using an air tube to firmly adhere the suction cup 11 to the inner bottom wall of the PET plastic bottle, providing a stable grip. Afterwards, the electric telescopic rod 6 retracts, lifting the PET plastic bottle from the placement slot 22. Motor A3 then drives the lead screw 4 to rotate again, lifting the PET bottle from the placement slot 22. The PET plastic bottle is transferred to the water tank 16 in the cooling and drying oven 2. At this time, the electric telescopic rod 6 extends, immersing the PET plastic bottle in the cooling water in the water tank 16. The cooling water cools the outer surface of the PET plastic bottle. The water level in the water tank 16 can be adjusted according to the height of the PET plastic bottle. The water level in the water tank 16 should not exceed the bottle opening to prevent water from entering the bottle. After cooling, the electric telescopic rod 6 retracts, lifting the PET plastic bottle. The motor B24 installed in the mounting box 7 starts, driving the gripping plate 8 to rotate via the power shaft. This causes the PET plastic bottle on the gripping plate 8 to rotate, using centrifugal force to adhere the outer surface of the PET plastic bottle. Water droplets are quickly ejected and drip off under gravity, effectively reducing residual moisture on the surface of the PET plastic bottle. This lays the foundation for subsequent air drying and improves overall drying efficiency. Motor A3 starts, and after the PET plastic bottle is de-dried, it moves between the fans 14 installed on both sides of the cooling and drying chamber 2. Fans 14 start, and air enters through the window, passes through the filter screen 23, and blows onto the PET plastic bottle for air drying. The gripping plate 8 rotates the PET plastic bottle, ensuring full contact between the outer surface and the flowing air, accelerating moisture evaporation. After the PET plastic bottle is cooled and dried, the gripping plate 8 moves above the storage box 15, and the suction pump 9 stops suction. The suction cup 11 separates from the bottom wall of the PET plastic bottle, and the PET plastic bottle falls into the storage box 15 for storage. By setting a movable and telescopic gripping mechanism in the cooling and drying box, the suction cup and suction pump are used to stably grip the PET plastic bottle, avoiding the problem of the plastic bottle on the sleeve stick easily falling off during the rotation and water droplet shaking process. The PET plastic bottle is immersed in the cooling water in the water tank 16 for cooling. The cooling water can fully cover its outer surface. Compared with the cooling water sprayed by the spray mechanism, this immersion cooling method can ensure that the outer surface of each PET plastic bottle can fully contact the cooling water, avoiding the situation that some areas are not cooled enough due to uneven spraying, effectively improving the cooling efficiency and cooling effect.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cooling and drying device for blow molding PET plastic bottles, comprising a base (1), a cooling and drying chamber (2), a gripping plate (8), a mounting plate (12), and a placement platform (13), characterized in that: A cooling drying chamber (2) is installed on the base (1). An installation plate (12) is installed on the inner top wall of the cooling drying chamber (2). A motor A (3) is installed in the installation plate (12). A lead screw (4) is installed on the power shaft end of the motor A (3). A ball nut (5) is threaded on the lead screw (4). An electric telescopic rod (6) is installed on the ball nut (5). An installation box (7) is installed at one end of the electric telescopic rod (6). A gripping plate (8) is installed on the installation box (7). An insertion rod (10) is installed on the bottom surface of the gripping plate (8). A suction cup (11) is installed at one end of the insertion rod (10). A suction pump (9) is installed on the gripping plate (8). The suction pump (9) is connected to the suction cup (11) through an air pipe. A water tank (16) is installed in the cooling drying chamber (2).

2. The cooling and drying device for blow molding PET plastic bottles according to claim 1, characterized in that: Fans (14) are installed in the windows on both sides of the cooling drying box (2), and filters (23) are installed in the windows of the cooling drying box (2).

3. The cooling and drying device for blow molding of PET plastic bottles according to claim 1, characterized in that: The mounting box (7) is equipped with a motor B (24), and the power shaft end of the motor B (24) is connected to the gripping plate (8).

4. The cooling and drying device for blow molding PET plastic bottles according to claim 1, characterized in that: The cooling drying box (2) has a drain hole (20) on its inner bottom surface and a water tank (19) in its inner bottom. The drain hole (20) is connected to the water tank (19). A filter plate (21) is installed in the water tank (19). The other end of the connecting pipe (17) installed on the water tank (19) is connected to the water tank (16). A water pump (18) is installed on the connecting pipe (17).

5. A cooling and drying device for blow molding PET plastic bottles according to claim 1, characterized in that: A placement platform (13) is installed on the base (1), and a placement slot (22) is provided on the placement platform (13).

6. The cooling and drying apparatus for blow molding PET plastic bottles according to claim 1, characterized in that: A storage box (15) is placed on the base (1).

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