PET bottle preform cooling and shaping device

Abstract

The utility model relates to a kind of PET bottle embryo cooling shaping device, including rack, the top end part of the rack is fixedly installed with sealing box, the sealing box is equipped with the shaping mould for PET bottle embryo, the top end part of the sealing box is also fixedly installed with refrigeration assembly, the bottom end part of the rack is also equipped with self-priming pump;The input end of the self-priming pump is arranged in the inside of the rack, for the negative pressure processing to the inside of the sealing box, the inner wall top of the sealing box is fixedly installed with cooling pipeline, the refrigeration assembly is used for the cold quantity delivery to the inside of the sealing box by cooling pipeline.The utility model embodiment is configured with corresponding self-priming pump and refrigeration assembly on rack, to realize the composite cooling function of suction and convection heat transfer, to effectively improve the cooling efficiency and shaping effect of PET bottle embryo.

Description

Technical Field

[0001] This utility model relates to the field of preform processing technology, and in particular to a PET preform cooling and shaping device. Background Technology

[0002] Preforms are intermediate semi-finished products in the preform manufacturing process, typically made from plastics such as polyethylene terephthalate (PET) through injection molding. Their appearance resembles a test tube. In preform processing, the cooling and setting step is crucial. During injection molding, the preform must cool from a molten state to a predetermined demolding temperature to obtain sufficient mechanical strength and prevent deformation due to material softening upon demolding. The preform cooling efficiency directly determines the setting cycle and product performance; however, existing technologies have the following significant drawbacks:

[0003] Existing cooling solutions mostly employ single heat exchange methods such as immersion cooling and mold cooling. These methods are inefficient and cannot quickly achieve the desired cooling and shaping effect, thus affecting production efficiency and product quality. Immersion cooling requires manual immersion of the mold in water, which is only suitable for small-batch manual production and cannot meet the needs of large-scale production. Mold cooling uses cooling water to circulate through cooling pipes inside the mold to remove heat, but these pipes are prone to scaling or blockage and require regular cleaning. Utility Model Content

[0004] Therefore, it is necessary to provide a PET preform cooling and shaping device that can effectively improve the cooling efficiency and shaping effect of PET preforms.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A PET preform cooling and shaping device includes a frame, wherein a sealed box is fixedly installed at the top of the frame, a shaping mold for PET preforms is provided inside the sealed box, a refrigeration component is also fixedly installed at the top of the sealed box, and a self-priming pump is provided at the bottom of the frame; the input end of the self-priming pump is provided through the interior of the frame for negative pressure treatment inside the sealed box, a cooling pipe is fixedly installed on the top of the inner wall of the sealed box, and the refrigeration component is used to transport cold energy to the interior of the sealed box through the cooling pipe.

[0006] In one embodiment, the output end of the refrigeration component is fixedly connected to an elbow conduit, and the output end of the elbow conduit is fixedly connected to the input end of the cooling pipeline.

[0007] In one embodiment, the cooling pipes are made of copper and are bent and distributed on the top of the inner wall of the sealed box. The surface of the cooling pipes is also welded with aluminum heat-conducting fins.

[0008] In one embodiment, the sealed box has a set of embedded grooves inside, embedded blocks are movably embedded between the inner walls of the set of embedded grooves, and a sealing plate is fixedly connected between the outer walls of the set of embedded blocks.

[0009] In one embodiment, a recessed storage space is formed at the top of the frame, and the sealing box is placed in the storage space; a notch is formed on one side of the frame, and the sealing plate is directly opposite the notch.

[0010] In one embodiment, the input pipeline of the self-priming pump passes through the interior of the frame, and the input end of the self-priming pump is fixedly connected to the interior of the sealed box.

[0011] In one embodiment, the shaping mold is located at the bottom of the inner wall of the sealed box; the shaping mold includes a bottom mold, a top mold, and two built-in cylinders. The bottom mold is disposed on the sealed box, and a plurality of telescopic rods are fixedly installed on the top of the bottom mold. The telescopic ends of each telescopic rod are fixedly connected to the top mold. The telescopic ends of the two built-in cylinders are fixedly connected to linkage plates, and one side of the outer wall of the two linkage plates is fixedly connected to the outer wall of the top mold.

[0012] By adopting the above technical solution, the present invention has at least the following beneficial effects: By adding a self-priming pump to the bottom of the frame, the present invention can effectively enhance the heat transfer efficiency in the shaping mold located in the sealed box by utilizing the suction effect generated by the self-priming pump, thereby accelerating the heat removal during the preform shaping process; at the same time, the sealed box is also equipped with cooling pipes, and the cooling components deliver cold energy to the surface of the preform through the cooling pipes to achieve a composite cooling function of suction and convection heat exchange, thereby effectively improving the cooling efficiency and shaping effect of PET preforms. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of an optional embodiment of the PET preform cooling and shaping device of this utility model;

[0015] Figure 2 This is a frontal view of a structural schematic diagram of an optional embodiment of the PET preform cooling and shaping device of this utility model.

[0016] Figure 3A three-dimensional structural diagram of a sealed box, representing an optional embodiment of the PET preform cooling and shaping device of this utility model;

[0017] Figure 4 for Figure 3 A magnified view of the area at point B;

[0018] Figure 5 This is a frontal view of the structure of the sealed box of the PET preform cooling and shaping device of this utility model;

[0019] Figure 6 This is a three-dimensional structural diagram of the shaping mold for the PET preform cooling and shaping device of this utility model.

[0020] In the attached diagram: 1. Frame; 10. Storage space; 11. Notch; 2. Sealed box; 21. Insertion slot; 22. Insertion block; 23. Sealing plate; 24. Refrigeration component; 241. Elbow pipe; 242. Cooling pipe; 3. Self-priming pump; 4. Shaping mold; 41. Built-in cylinder; 42. Linkage plate; 43. Bottom mold; 44. Top mold; 45. Telescopic rod. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0022] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] In one embodiment, such as Figures 1-6As shown, a PET preform cooling and shaping device includes a frame 1, wherein a sealed box 2 is fixedly installed at the top of the frame 1, and a shaping mold 4 for PET preforms is provided inside the sealed box 2. A cooling component 24 is also fixedly installed at the top of the sealed box 2, and a self-priming pump 3 is provided at the bottom of the frame 1. The input end of the self-priming pump 3 extends through the interior of the frame 1 and is used to perform negative pressure treatment inside the sealed box 2. A cooling pipe 242 is fixedly installed on the top of the inner wall of the sealed box 2, and the cooling component 24 is used to transport cold energy to the interior of the sealed box 2 through the cooling pipe 242.

[0024] This embodiment of the invention adds a self-priming pump 3 to the bottom of the frame 1. The suction effect of the self-priming pump 3 effectively enhances the heat transfer efficiency within the shaping mold 4 located in the sealed box 2, thereby accelerating heat removal during the preform shaping process. Simultaneously, a cooling pipe 242 is installed inside the sealed box 2, through which the cooling component 24 transfers cold energy to the sealed box 2, achieving a combined cooling function of suction and convection heat exchange. This effectively improves the cooling efficiency and shaping effect of the PET preform. In a specific implementation, the sealed box 2 can also be connected to an air supply pipe for supplying fresh air to the sealed box 2.

[0025] In one embodiment, such as Figure 3 and Figure 5 As shown, the output end of the refrigeration component 24 is fixedly connected to a bent conduit 241, and the output end of the bent conduit 241 is fixedly connected to the input end of the cooling pipe 242. In this embodiment, the refrigeration component 24 is fixed to the top plate of the sealed box 2, and the output end is connected to the cooling pipe 242 through the bent conduit 241. The bent conduit 241 can adapt to the connection requirements of cooling pipes 242 of different shapes and sizes, facilitating the transfer of cold energy.

[0026] In one embodiment, combined Figure 5 As shown, the cooling pipe 242 is made of copper and is bent and distributed at the top of the inner wall of the sealed box 2. Aluminum heat-conducting fins are also welded to the surface of the cooling pipe 242. In this embodiment, the cooling pipe 242 is made of copper and is bent and arranged at the top of the inner wall of the sealed box 2. Aluminum heat-conducting fins are welded to the surface of the cooling pipe 242 to increase the area for cold energy conduction, enabling efficient cold energy conduction to the interior of the sealed box 2 and effectively reducing the temperature inside the sealed box 2.

[0027] In specific implementation, the cooling component 24 is selected as a semiconductor cooling module. After being powered on, it generates low-temperature energy, which is then connected to the cooling pipe 242 through the elbow conduit 241. The energy is transferred to the interior of the sealed box 2 through the outer wall of the bent cooling pipe 242. The aluminum heat-conducting fins on the outside of the cooling pipe 242 can further improve the heat transfer efficiency.

[0028] In one embodiment, such as Figure 2 and Figure 3 As shown, the sealed box 2 has a set of embedded grooves 21 pre-set inside. Embedded blocks 22 are movably embedded between the inner walls of the set of embedded grooves 21, and a sealing plate 23 is fixedly connected between the outer walls of the set of embedded blocks 22. In this embodiment, the embedded grooves 21 are arranged in a ring on the inner wall of the sealed box 2, and the embedded blocks 22 are fitted with the embedded grooves 21 with a clearance fit. In specific implementations, the sealing plate 23 is made of stainless steel with a rust-proof coating, facilitating the disassembly and maintenance of the cooling pipes 242, and also facilitating the maintenance of the internal molding 4. In specific implementations, a sealing ring is also wrapped around the outer edge of the sealing plate 23 to improve sealing performance.

[0029] In one embodiment, such as Figure 1 and Figure 2 As shown, a recessed storage space 10 is formed at the top of the frame 1, and the sealing box 2 is placed in the storage space 10. A notch 11 is formed on one side of the frame 1, and the sealing plate 23 is directly opposite the notch 11. In this embodiment, by providing a recessed storage space 10 at the top of the frame 1, it is convenient to position and install the sealing box 2, and the overall structure of the device is more compact. In addition, a notch is provided on one side of the frame 1 to facilitate the easy installation and removal of the sealing plate 23.

[0030] In one embodiment, such as Figure 1 and Figure 2 As shown, the input pipeline of the self-priming pump 3 passes through the interior of the frame 1, and the input end of the self-priming pump 3 is fixedly connected to the interior of the sealed box 2. In this embodiment, the self-priming pump 3 is a rotary vane self-priming pump, and the input pipeline is made of stainless steel. The input pipeline passes through one side plate of the frame 1 and is welded to the corresponding interface on the back of the sealed box 2. In specific implementation, a one-way valve can be installed at the interface to prevent air backflow when the machine stops.

[0031] In one embodiment, such as Figure 1 and Figure 6As shown, the shaping mold 4 is located at the bottom of the inner wall of the sealed box 2; the shaping mold 4 includes a bottom mold 43, a top mold 44 and two built-in cylinders 41. The bottom mold 43 is disposed on the sealed box 2. Several telescopic rods 45 are fixedly installed on the top of the bottom mold 43. The telescopic end of each telescopic rod 45 is fixedly connected to the top mold 44. The telescopic ends of the two built-in cylinders 41 are fixedly connected to linkage plates 42. One side of the outer wall of the two linkage plates 42 is fixedly connected to the outer wall of the top mold 44. In this embodiment, the linkage plate 42 is fixed to the side wall of the top mold 44 by bolts. When the built-in cylinder 41 is working, the built-in cylinder 41 causes the linkage plate 42 to drive the top mold 44 to press down along the telescopic rod 45 and close with the bottom mold 43 to perform shaping pressure treatment on the PET preform. Then the PET preform is cooled. After the PET preform has completely cooled and shaped, the built-in cylinder 41 causes the two linkage plates 42 to rise and act on the top mold 44, thereby pulling out the top mold 44 for demolding.

[0032] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A PET preform cooling and shaping device, comprising a frame, characterized in that, A sealed box is fixedly installed at the top of the frame. The sealed box contains a shaping mold for PET preforms. A refrigeration component is also fixedly installed at the top of the sealed box. A self-priming pump is also installed at the bottom of the frame. The input end of the self-priming pump is located inside the frame and is used to create negative pressure inside the sealed box. A cooling pipe is fixedly installed on the top of the inner wall of the sealed box. The refrigeration component delivers cooling energy to the inside of the sealed box through the cooling pipe.

2. The PET preform cooling and shaping device according to claim 1, characterized in that, The output end of the refrigeration component is fixedly connected to an elbow conduit, and the output end of the elbow conduit is fixedly connected to the input end of the cooling pipeline.

3. The PET preform cooling and shaping device according to claim 1 or 2, characterized in that, The cooling pipes are made of copper and are bent and distributed on the top of the inner wall of the sealed box. Aluminum heat-conducting fins are also welded to the surface of the cooling pipes.

4. The PET preform cooling and shaping device according to claim 1, characterized in that, The sealed box has a set of embedded grooves inside, and embedded blocks are movably embedded between the inner walls of the set of embedded grooves. A sealing plate is fixedly connected between the outer walls of the set of embedded blocks.

5. The PET preform cooling and shaping device according to claim 4, characterized in that, The top of the frame has a recessed storage space, into which the sealed box is placed; a notch is formed on one side of the frame, and the sealing plate is directly opposite the notch.

6. The PET preform cooling and shaping device according to claim 1, characterized in that, The input pipeline of the self-priming pump runs through the inside of the frame, and the input end of the self-priming pump is fixedly connected to the inside of the sealed box.

7. The PET preform cooling and shaping device according to claim 1, characterized in that, The shaping mold is located at the bottom of the inner wall of the sealed box; the shaping mold includes a bottom mold, a top mold and two built-in cylinders. The bottom mold is set on the sealed box. Several telescopic rods are fixedly installed on the top of the bottom mold. The telescopic ends of each telescopic rod are fixedly connected to the top mold. The telescopic ends of the two built-in cylinders are fixedly connected to linkage plates. One side of the outer wall of the two linkage plates is fixedly connected to the outer wall of the top mold.

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