Two-step drawing and blowing full-automatic production line for cosmetic plastic bottles

Abstract

The utility model discloses a cosmetic plastic bottle two-step method stretch-blow full-automatic production line which comprises an automatic bottle body processing device, the input end of the automatic bottle body processing device is connected with the output end of a heating device, and the input end of the heating device is connected with the output end of an injection molding device. The input end of the injection molding device is connected with the input end of the feeding conveying assembly, and the output end of the automatic bottle body machining device is provided with a cooling treatment cavity. Meanwhile, heat generated by the heat dissipation fins can be absorbed by the water cooling pipe, the water cooling pipe is matched with the corrugated pipe water pump to recycle the cooling liquid absorbing the heat into the water tank, and the cooling liquid in the water tank is recycled into the water cooling pipe, so that rapid heat dissipation can be achieved, heat transfer and consumption are conducted, and the heat dissipation efficiency is improved. And the cooling effect on the cosmetic plastic bottles is improved.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic plastic bottle processing technology, specifically a two-step FEP blow molding fully automatic production line for cosmetic plastic bottles. Background Technology

[0002] The two-step FEP blow molding fully automated production line for cosmetic plastic bottles is an advanced production equipment that integrates high efficiency and intelligence. Its production process consists of two steps. First, PET, PP, and other plastic granules are fed into an injection molding machine via a feeding system. After being heated and melted, the granules are injected under high pressure into the preform mold to complete the preform formation. Second, after the preform is evenly heated in a heating furnace, it is stretched and inflated in a blow molding machine to fit the mold cavity and form a bottle. After cooling and demolding, the product is output.

[0003] In the fully automated two-step Faraday blow molding production line for cosmetic plastic bottles, the blow-molded bottles are cooled in the mold by air cooling or water cooling to rapidly reduce the temperature of the bottles. However, traditional air cooling structures have low cooling effect on the mold, while water cooling can easily lead to excessively high water temperature. Furthermore, coolant residue remains on the mold surface after cooling, requiring cleaning.

[0004] A search revealed a Chinese patent document disclosing a high-speed fully automatic plastic blow molding system (publication number: CN206703492U). This utility model provides a high-speed fully automatic plastic blow molding system, relating to the field of plastic molding technology, including a preform production mechanism and a stretch blow molding system. The preform production mechanism includes a screw extruder, an extrusion die, a shaping die, a die opening and closing mechanism, a lifting mechanism, an air blowing device, a preform cutting device, an extruder electrical drive control system, a heating and temperature control system, and an action program control system. This utility model can be customized to meet different product needs, and the molds used are easy and quick to change, requiring no adjustment of the mold thickness within the corresponding machine's mold capacity range. It can handle multiple product types and has a wide range of applications. The entire production process is fully automated, and multiple machines can be combined into a fully automatic production line simultaneously. The entire production process requires no manual contact with the preforms or finished bottles. However, it still has the following drawbacks:

[0005] Although the aforementioned high-speed fully automatic plastic blow molding system enables multiple machines to be combined into a fully automatic production line at the same time, and the entire production process does not require manual contact with the preforms or finished bottles, it still has the problem that after the blow-molded bottles are cooled in the mold by air cooling or water cooling, the temperature of the bottles is reduced rapidly. However, the traditional air cooling structure has a low cooling effect on the mold, while water cooling is prone to excessively high water temperature. In addition, coolant residue remains on the surface of the mold after cooling, which requires cleaning. Utility Model Content

[0006] The purpose of this utility model is to provide a fully automated two-step stretch blow molding production line for cosmetic plastic bottles, in order to solve the problem mentioned in the background art that after the bottle is blow-molded, it is cooled in the mold by air cooling or water cooling to rapidly reduce the temperature of the bottle. However, the traditional air cooling structure has a low cooling effect on the mold, while water cooling is prone to excessively high water temperature, and coolant will remain on the surface of the mold after cooling, which requires cleaning.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a fully automatic two-step stretch blow molding production line for cosmetic plastic bottles, comprising an automated bottle body processing device, wherein the input end of the automated bottle body processing device is connected to the output end of a heating device, the input end of the heating device is connected to the output end of an injection molding device, the input end of the injection molding device is connected to the input end of a feeding and conveying assembly, a cooling chamber is installed at the output end of the automated bottle body processing device, a plug-in frame is provided inside the cooling chamber, and mounting housings are installed at both the front and rear ends of the plug-in frame, a metal mesh is installed through one end of the mounting housing, fan assemblies are symmetrically installed inside the mounting housings, heat-conducting plates are installed on both sides of the plug-in frame, and heat dissipation fins are installed at equal intervals on one end of the heat-conducting plates.

[0008] Preferably, the top of the feeding and conveying component is equipped with a feeding port, and a feeding pipe is inserted into the top of the feeding port.

[0009] Preferably, a screening box is installed inside the feeding pipe, and a first screening plate is installed inside the screening box. The first screening plate is arranged with an oblique cutting structure.

[0010] Preferably, one end of the screening box has a through cavity, one end of the transmission pipe is installed at one end of the through cavity, and the other end of the transmission pipe is connected to the top of the screening cavity. The screening cavity is installed on the outer wall of the feed port.

[0011] Preferably, a storage box is movably connected to one end of the screening chamber, and a second screening plate is installed inside the storage box. A connecting pipe is installed at the bottom of the screening chamber.

[0012] Preferably, the fan assembly installed inside the front mounting housing has a forward-facing blade structure, and the fan assembly installed inside the rear mounting housing has a reverse-facing blade structure.

[0013] Preferably, water-cooling pipes are installed through the interior of each heat dissipation fin, and corrugated pipes are installed at both ends of each water-cooling pipe. The other end of each corrugated pipe is connected to a water pump device, and the other end of each water pump is connected to the bottom of a water tank. The water tank is installed at the top of the cooling chamber.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model uses a heat-conducting plate to absorb the generated heat and then diffuses it through heat dissipation fins. The heat generated by the heat dissipation fins is absorbed by the water-cooling pipes, and the water-cooling pipes, together with a corrugated water pump, circulate the cooled liquid after absorbing the heat back to the water tank. The cool liquid in the water tank is then circulated back to the water-cooling pipes. This achieves rapid heat dissipation and heat transfer, thus improving the cooling effect on cosmetic plastic bottles.

[0016] 2. In this invention, when plastic granules are fed into the feeding and conveying assembly through the inlet port, the screening box and the first screening plate work together to quickly screen out large plastic granules. These larger granules enter the screening chamber through the conveying pipe and are then finely screened by the internal storage box in conjunction with the second screening plate. Qualified plastic granules fall smoothly to the bottom of the screening chamber and are transported to the storage container through the connecting pipe. Particles that do not meet the standards are temporarily stored in the storage box. Subsequently, it is only necessary to periodically remove the granules from the storage box for crushing, which can effectively avoid the problem of poor heat melting caused by excessively large particles and ensure the stability of the quality of raw materials. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the combined components of the feeding pipe, screening box, first screening plate, transmission pipe, screening chamber, storage box, second screening plate and connecting pipe in this utility model.

[0019] Figure 3 This is a cross-sectional structural diagram of the cooling chamber in this utility model;

[0020] Figure 4 This is a schematic diagram of the combined components of the plug-in frame, mounting shell, metal mesh, heat dissipation fins and water cooling pipes in this utility model.

[0021] Figure 5 This is a schematic diagram of the combined component structure of the heat-conducting plate, heat dissipation fins, water-cooling pipe and corrugated pipe in this utility model.

[0022] Figure 6 This is a schematic diagram of the combined component structure of the housing and fan assembly in this utility model.

[0023] In the diagram: 1. Automated bottle body processing device; 2. Heating device; 3. Injection molding device; 4. Feeding and conveying assembly; 5. Feed port; 6. Feeding pipe; 7. Screening box; 8. First screening plate; 9. Conveying pipe; 10. Screening chamber; 11. Storage box; 12. Second screening plate; 13. Connecting pipe; 14. Cooling chamber; 15. Insertion frame; 16. Mounting housing; 17. Metal mesh; 18. Fan assembly; 19. Heat conduction plate; 20. Heat dissipation fins; 21. Water cooling pipe; 22. Corrugated pipe; 23. Water tank. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please see Figure 1-6 This utility model provides a fully automated two-step stretch blow molding production line for cosmetic plastic bottles, including an automated bottle body processing device 1. The automated bottle body processing device 1 is characterized in that: the input end of the automated bottle body processing device 1 is connected to the output end of the heating device 2, the input end of the heating device 2 is connected to the output end of the injection molding device 3, the input end of the injection molding device 3 is connected to the input end of the feeding and conveying component 4, and the output end of the automated bottle body processing device 1 is connected to the input end of the cooling treatment chamber 14.

[0026] The feeding and conveying assembly 4 transports PET, PP and other plastic granules to the injection molding unit 3 to provide raw materials for production. The injection molding unit 3 heats and melts the plastic granules, and then injects them into the preform mold under high pressure to complete the preform forming. The formed preform is then sent to the heating unit 2 by the conveying device. The heating unit 2 heats the preform to a suitable temperature evenly by infrared rays or circulating hot air. Then, the automated bottle body processing device 1 automatically picks up the heated preform and sends it into the automated bottle body processing device 1. The robotic arm of the automated bottle body processing device 1 stretches the preform, and at the same time, high-pressure air is injected through the air blowing pipe to inflate the preform to fit the mold cavity. It is then transferred to the cooling treatment chamber 14, where the formed bottle is rapidly cooled to solidify and set its shape.

[0027] The top of the feeding and conveying assembly 4 is fixedly connected to the feeding port 5, and the top of the feeding port 5 is inserted into the feeding pipe 6. The feeding pipe 6 is fixedly connected to the screening box 7, and the screening box 7 is fixedly connected to the first screening plate 8 with an inclined structure. One end of the screening box 7 has a through cavity, and one end of the through cavity is fixedly connected to the transmission pipe 9. The other end of the transmission pipe 9 is connected to the top of the screening chamber 10. One end of the screening chamber 10 is movably connected to the storage box 11, and the storage box 11 is fixedly connected to the second screening plate 12 for screening plastic particles. The bottom end of the screening chamber 10 is connected to the connecting pipe 13.

[0028] When plastic granules are fed into the feeding and conveying assembly 4 through the feed port 5, to avoid the phenomenon that the plastic granules are too large and the melting effect is not good, the screening box 7 and the first screening plate 8 are used to complete the screening operation. Then, the large plastic granules are conveyed to the screening chamber 10 through the conveying pipe 9. The storage box 11 inside the screening chamber 10 and the second screening plate 12 are used for secondary screening. The plastic granules that meet the standard will fall into the bottom of the screening chamber 10 and then be conveyed to the plastic granule storage container through the connecting pipe 13. The plastic granules that do not meet the standard are stored in the storage box 11. The plastic granules in the storage box 11 are periodically removed and crushed. This can avoid the problem of poor heat melting effect caused by the granules being too large.

[0029] An output device is fixedly connected to the top of the cooling chamber 14. The output end of the output device is fixedly connected to a plug-in frame 15 with a concave structure. A mounting housing 16 is fixedly connected through the front and rear ends of the plug-in frame 15. A metal mesh 17 is fixedly connected to the end of the mounting housing 16 away from the plug-in frame 15. Fan assemblies 18 are symmetrically fixedly connected inside the mounting housing 16. The fan assembly 18 installed inside the front mounting housing 16 has a forward blade structure, and the fan assembly 18 installed inside the rear mounting housing 16 has a reverse blade structure.

[0030] The fan assembly 18 installed inside the mounting housing 16 has a front-mounted fan with a forward-facing blade structure and a rear-mounted fan with a reverse-facing blade structure. This design creates a stable heat dissipation airflow, which effectively improves the cooling effect of the cosmetic plastic bottle and enhances heat dissipation.

[0031] Both sides of the plug-in frame 15 are fixedly connected to heat conduction plates 19, and heat dissipation fins 20 are installed at equal intervals on one end of the heat conduction plates 19. The interior of the heat dissipation fins 20 is connected to water cooling pipes 21 with a "U" shaped structure. Corrugated pipes 22 are fixedly connected to both sides above the water cooling pipes 21. One end of the two corrugated pipes 22 is connected to the output or input flange of the water pump, respectively. The other end of the water pump is connected to the bottom of the water tank 23. The water tank 23 is installed at the top of the cooling chamber 14. The heat conduction plates 19 are made of copper.

[0032] The heat-conducting plate 19 absorbs the generated heat, which is then dissipated through the heat dissipation fins 20. The heat generated by the heat dissipation fins 20 is absorbed by the water-cooling pipes 21. The water-cooling pipes 21, together with the corrugated pipes 22 and the water pump, circulate the coolant after absorbing the heat back to the water tank 23. The coolant in the water tank 23 then circulates back to the water-cooling pipes 21. This achieves rapid heat dissipation and heat transfer, improving the cooling effect on the cosmetic plastic bottles.

[0033] In this embodiment of the application, when plastic granules are first fed into the feeding and conveying assembly 4 through the feed port 5, in order to avoid the phenomenon that the plastic granules are too large and the melting effect is not good, the screening operation is completed by the screening box 7 in conjunction with the first screening plate 8. Then, the large plastic granules are conveyed to the screening chamber 10 through the conveying pipe 9. The storage box 11 inside the screening chamber 10 is used in conjunction with the second screening plate 12 for secondary screening. In this way, the plastic granules that meet the standard will fall into the bottom of the screening chamber 10 and then be conveyed to the plastic granule storage container through the connecting pipe 13. The plastic granules that do not meet the standard are stored inside the storage box 11. The plastic granules inside the storage box 11 are periodically removed.

[0034] Secondly, the plastic granules are conveyed to the injection molding device 3 to provide raw materials for production. The injection molding device 3 heats and melts the plastic granules, and then injects them into the preform mold under high pressure to complete the preform forming. The preform is then sent to the heating device 2 by the conveying device. The heating device 2 heats the preform to a suitable temperature evenly by infrared rays or circulating hot air. Then, the automated bottle body processing device 1 automatically grips the heated preform and sends it into the automated bottle body processing device 1. The robotic arm of the automated bottle body processing device 1 stretches the preform, and at the same time, high-pressure air is injected through the air blowing pipe to inflate the preform to fit the mold cavity. Then, it is transferred to the cooling treatment chamber 14.

[0035] Then, through the fan assembly 18 set inside the mounting housing 16, since the front fan assembly 18 is set with a positive blade structure and the rear fan assembly 18 is set with a negative blade structure, a stable heat dissipation air duct can be formed in this way, thereby effectively improving the cooling effect of the cosmetic plastic bottle.

[0036] Finally, the heat generated is absorbed by the heat-conducting plate 19 and diffused by the heat dissipation fins 20. Simultaneously, the heat generated by the heat dissipation fins 20 is absorbed by the water-cooling pipe 21. The water-cooling pipe 21, in conjunction with the corrugated pipe 22 and water pump, recirculates the cooled liquid after heat absorption back to the water tank 23. The cooled liquid in the water tank 23 then recirculates back to the water-cooling pipe 21. This completes the two-step stretch blow molding fully automatic production line for cosmetic plastic bottles. It should be noted that this utility model is a two-step stretch blow molding fully automatic production line for cosmetic plastic bottles. All components are general standard parts or parts known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle areas of this device, all the aforementioned electrical components (referring to power elements, electrical components, and the compatible monitoring computer and power supply) are connected by wires. The specific connection methods should refer to the working principle described above, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are known technologies in this field.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automated two-step stretch blow molding production line for cosmetic plastic bottles, comprising an automated bottle body processing device (1), characterized in that: The input end of the automated bottle processing device (1) is connected to the output end of the heating device (2), the input end of the heating device (2) is connected to the output end of the injection molding device (3), the input end of the injection molding device (3) is connected to the input end of the feeding and conveying assembly (4), the output end of the automated bottle processing device (1) is equipped with a cooling treatment chamber (14), the interior of the cooling treatment chamber (14) is provided with a plug-in frame (15), and the front and rear ends of the plug-in frame (15) are both equipped with mounting housings (16), one end of the mounting housing (16) is through which a metal mesh (17) is installed, the interior of the mounting housing (16) is symmetrically equipped with fan assemblies (18), both sides of the plug-in frame (15) are equipped with heat-conducting plates (19), and one end of the heat-conducting plates (19) is evenly spaced with heat dissipation fins (20).

2. The fully automated two-step farrowing blow molding production line for cosmetic plastic bottles according to claim 1, characterized in that: The top of the feeding and conveying assembly (4) is equipped with a feeding port (5), and a feeding pipe (6) is inserted into the top of the feeding port (5).

3. The fully automated two-step farrowing blow molding production line for cosmetic plastic bottles according to claim 2, characterized in that: The feeding pipe (6) is equipped with a screening box (7), and the screening box (7) is equipped with a first screening plate (8), which is set in a slanted structure.

4. The fully automated two-step farrowing blow molding production line for cosmetic plastic bottles according to claim 3, characterized in that: The screening box (7) has a through cavity at one end, and a transmission pipe (9) is installed at one end of the through cavity. The other end of the transmission pipe (9) is connected to the top of the screening cavity (10). The screening cavity (10) is installed on the outer wall of the feed port (5).

5. The fully automated two-step farrowing blow molding production line for cosmetic plastic bottles according to claim 4, characterized in that: A storage box (11) is movably connected to one end of the screening chamber (10), and a second screening plate (12) is installed inside the storage box (11). A connecting pipe (13) is installed at the bottom of the screening chamber (10).

6. The fully automated two-step farrowing blow molding production line for cosmetic plastic bottles according to claim 1, characterized in that: The fan assembly (18) installed inside the front mounting housing (16) has a positive blade structure, while the fan assembly (18) installed inside the rear mounting housing (16) has a negative blade structure.

7. The fully automated two-step farrowing blow molding production line for cosmetic plastic bottles according to claim 1, characterized in that: Water cooling pipes (21) are installed through the interior of each heat dissipation fin (20). Corrugated pipes (22) are installed at both ends of each water cooling pipe (21), and the other end of each corrugated pipe (22) is connected to a water pump device. The other end of each water pump is connected to the bottom of a water tank (23), and the water tank (23) is installed at the top of a cooling treatment chamber (14).

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