Efficient and energy-saving plastic bottle blank injection molding machine

Abstract

The utility model relates to an efficient energy-saving plastic bottle blank injection molding machine, which comprises a shell covered on the periphery, a feeding mechanism and an injection molding cavity are arranged in the shell, a mold closing mechanism is arranged in the opposite direction of the injection molding cavity and is used for injection molding of a plastic bottle blank, the feeding mechanism comprises a first motor arranged at the head end of the shell, and a power output end of the first motor is sleeved with a first belt wheel; the first belt wheel is connected with an adapter pipe, a plurality of heating rings are sleeved on the adapter pipe to heat bottle blank raw materials, a rotatable feeding paddle is screwed in the adapter pipe, and the tail end of the feeding paddle is connected with an injection molding cavity; the mold closing mechanism comprises a second motor arranged at the rear end of the shell, the second motor is connected with a lead screw, a mold closing plate arranged opposite to the injection molding cavity is arranged at the tail end of the lead screw, and mold closing-demolding is achieved along with driving of the lead screw to advance and retreat; the production efficiency is improved and the energy consumption is reduced through the optimal design of links such as feeding, heating and mold closing.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection molding equipment technical field, especially related to a kind of high-efficiency energy-saving plastic bottle blank injection molding machine. BACKGROUND

[0002] Plastic bottle blank injection molding machine plays an important role in plastic processing industry, its main function is to make bottle blank by heating and injection molding process with plastic raw materials.However, traditional plastic bottle blank injection molding machine often faces the problem of low efficiency energy consumption in production process, which not only increases production cost, but also has negative impact on the environment.

[0003] At present, the working principle of plastic bottle blank injection molding machine involves plastic melting, injection molding and cooling and multiple steps.In this process, plastic raw materials need to be heated to a molten state, and molded through injection cavity.If heating is not uniform, it will lead to incomplete and uneven plastic melting, thereby reducing production efficiency.So, a kind of high-efficiency energy-saving plastic bottle blank injection molding machine appears. SUMMARY

[0004] The utility model provides a kind of high-efficiency energy-saving plastic bottle blank injection molding machine in view of the deficiency of prior art, and specific technical solutions are as follows:

[0005] The utility model provides a kind of high-efficiency energy-saving plastic bottle blank injection molding machine, including the shell of outer circumferential cover, its inside is arranged with feeding mechanism and injection cavity, and is provided with mold closing mechanism opposite to injection cavity, for the injection molding of plastic bottle blank, the feeding mechanism includes the first motor of seat in the first end of shell, its power output end is equipped with the first pulley, the first pulley is connected with adapter pipe, and a plurality of heating rings are equipped on the adapter pipe, to heat bottle blank raw material, rotatable feeding paddle is arranged in pipe, and the tail end of the feeding paddle is connected with injection cavity;

[0006] The mold closing mechanism includes the second motor arranged in the rear end of shell, which is connected with screw rod, and the tail end of the screw rod is provided with mold closing plate arranged opposite to injection cavity, which is driven in and out to realize mold closing-demolding.

[0007] The feeding paddle is designed as a light shaft, a spiral groove is formed on it, and a hopper inlet is communicated and inserted in the upper middle part of the groove for feeding and grinding of bottle blank raw materials.

[0008] As a preferred technical solution of the utility model, a plurality of synchronous shafts are provided between the feeding mechanism and the mold closing mechanism for stable movement of injection molding and demolding.

[0009] As a preferred technical solution of the utility model, the power output end of the second motor is connected with the second pulley, and the screw rod is inserted in the second pulley, and the tail end of the screw rod is in contact with the top of the mold closing plate, and the mold closing plate is linearly moved by rotating the screw rod.

[0010] As a preferred technical solution of this utility model, multiple cooling fans are provided on the outside of the mold plate and the injection cavity, which are cooled by high-speed air blowing during injection, for the rapid cooling and separation of the plastic preform.

[0011] As a preferred technical solution of this utility model, the bottom of the mold and the injection cavity are provided with an openable and closable discharge port for collecting and discharging plastic preforms.

[0012] As a preferred embodiment of this utility model, the housing is provided with an emergency stop button, which is connected to a first motor and a second motor for emergency start and stop of the injection molding machine.

[0013] The beneficial effects of this utility model are:

[0014] First, the design of this injection molding machine significantly improves production efficiency. The first motor in the feeding mechanism is connected to a transfer tube via a first pulley. Multiple heating rings fitted onto the transfer tube heat the preform material. This design ensures that the material is preheated before entering the injection cavity, thereby shortening melting time and improving injection efficiency. The circumferential distribution of the heating rings ensures uniform heating of the material, reducing quality problems caused by uneven temperature. Furthermore, the rotational motion of the feed paddle further promotes uniform mixing and conveying of the material, making the entire injection molding process smoother.

[0015] Secondly, the injection molding machine exhibits significant energy savings. Traditional injection molding machines typically rely on high-power heating systems, while this design achieves segmented heating of the raw material by incorporating multiple heating rings on the transfer tube. This method not only reduces overall energy consumption but also minimizes heat loss. Precise control of the heating rings makes energy utilization more efficient, reducing production costs. Simultaneously, the optimized feed paddle design improves the material transport path, reducing unnecessary energy consumption.

[0016] The design of the mold closing mechanism also ensures the efficient operation of the injection molding machine. A second motor drives the mold closing platen forward and backward via a lead screw, achieving automated control of mold closing and demolding. The precision of the lead screw drive ensures the stability and reliability of the mold closing process, reducing product defects caused by improper mold closing. The precise positioning of the mold closing platen not only improves product consistency but also shortens mold opening and closing time, further enhancing production efficiency.

[0017] Furthermore, the injection molding machine features a compact overall structure, and the outer casing provides excellent protection, reducing the impact of the external environment on machine operation. The casing design not only enhances equipment safety but also reduces noise pollution, providing operators with a more comfortable working environment.

[0018] In terms of maintenance, this injection molding machine also has significant advantages. Its modular design makes it easy to disassemble and replace components, reducing maintenance difficulty and downtime. The independent design of the heating ring and feed paddle simplifies troubleshooting, further improving equipment availability.

[0019] In summary, this high-efficiency and energy-saving plastic preform injection molding machine achieves improved production efficiency and reduced energy consumption through optimized design of feeding, heating, and mold closing processes. It is suitable not only for large-scale production environments but also provides a high-efficiency, low-cost solution for small and medium-sized enterprises. The equipment's stability, reliability, and ease of maintenance make it highly competitive in the market, providing strong support for the production of plastic preforms. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0021] Figure 2 A schematic diagram of the feeding mechanism in this utility model is shown;

[0022] Figure 3 A schematic diagram of the mold-closing mechanism in this utility model is shown;

[0023] Figure 4 A schematic diagram of the feeding paddle in this utility model is shown;

[0024] Figure 5 This invention presents a schematic diagram showing the combination of the feeding mechanism and the mold closing mechanism.

[0025] The figure shows: 1. Housing; 2. Feeding mechanism; 21. First motor; 22. First pulley; 23. Inlet; 24. Adapter pipe; 25. Feeding paddle; 251. Groove; 26. Heating ring; 27. Synchronous shaft; 3. Injection cavity; 4. Mold closing mechanism; 41. Second motor; 42. Second pulley; 43. Lead screw; 44. Mold closing plate; 45. Cooling fan; 5. Emergency stop button; 6. Outlet. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0027] Example 1

[0028] To address the technical problems in the background section, a highly efficient and energy-saving plastic preform injection molding machine is proposed as follows:

[0029] CombinationFigures 1-5 As shown, a high-efficiency and energy-saving plastic preform injection molding machine includes a housing 1 with an outer periphery, a feeding mechanism 2 and an injection cavity 3 arranged inside the housing, and a mold closing mechanism 4 opposite to the injection cavity 3 for injection molding of plastic preforms. The feeding mechanism 2 includes a first motor 21 mounted at the head end of the housing 1, and a first pulley 22 sleeved on its power output end. The first pulley 22 is connected to a transfer pipe 24, and multiple heating rings 26 are sleeved on the transfer pipe 24 to heat the preform material. A rotatable feeding paddle 25 is rotated inside the pipe, and the end of the feeding paddle 25 is connected to the injection cavity 3.

[0030] The mold closing mechanism 4 includes a second motor 41 located at the rear end of the housing 1, which is connected to a lead screw 43. The end of the lead screw 43 is provided with a mold closing plate 44 arranged opposite to the injection cavity 3. The mold closing and demolding are realized by the lead screw 43 driving forward and backward.

[0031] Please refer to the instruction manual appendix. Figures 1-5 This embodiment provides a first embodiment of efficient and energy-saving injection molding of plastic preforms. In this embodiment, the injection molding machine is mainly composed of a housing 1 with an outer periphery. The housing 1 is provided with a feeding mechanism 2 and an injection cavity 3, and a mold closing mechanism 4 is provided opposite to the injection cavity 3 for injection molding of plastic preforms.

[0032] The feeding mechanism 2 is a key component in this embodiment, comprising a first motor 21 mounted at the head end of the housing 1. A first pulley 22 is fitted onto the power output end of the first motor 21, and this pulley 22 is connected to the feeding system via a transfer tube 24. To heat the raw material, multiple heating rings 26 are fitted onto the transfer tube 24, which preheat the raw material before it enters the injection cavity 3. A rotatable feeding paddle 25 is screwed inside the transfer tube 24. During rotation, the feeding paddle 25 propels the raw material forward and ultimately delivers it into the injection cavity 3.

[0033] In this embodiment, the mold closing mechanism 4 is located at the rear end of the housing 1 and is mainly composed of a second motor 41. The second motor 41 is connected to a lead screw 43, and the end of the lead screw 43 is provided with a mold closing platen 44, which is arranged opposite to the injection cavity 3. Driven by the lead screw 43, the mold closing platen 44 can perform forward and backward movements, thereby completing the mold closing and demolding process. The design of the mold closing mechanism 4 ensures the shape stability of the preform during the injection molding process.

[0034] Furthermore, in this embodiment, the design of the housing 1 provides excellent protection, safeguarding both the internal mechanical structure and reducing the impact of the external environment on equipment operation. The outer periphery of the housing 1 contributes to the overall sealing of the equipment, reducing energy waste and noise transmission.

[0035] Furthermore, the injection molding machine features a compact overall structure, with each component operating in coordination through precise mechanical connections. The cooperation between the first motor 21 and the feed paddle 25 enables the raw material to be heated and transported efficiently, while the cooperation between the second motor 41 and the mold plate 44 ensures the precise opening and closing of the mold during the injection molding process.

[0036] In summary, the plastic preform injection molding machine in this embodiment achieves a highly efficient production process through optimized design of feeding, heating, and mold closing processes. The equipment has a compact structure, is easy to operate, and is suitable for various types of plastic preform production environments. In practical applications, this injection molding machine provides stable performance and reliable production output, offering an effective solution for the plastics industry.

[0037] Example 2

[0038] Combination Figures 2-5 As shown, based on the above embodiments, this embodiment further provides the following:

[0039] In this embodiment, the feeding paddle 25 is designed with an optical axis and has a spiral groove 251. A bucket-shaped feed inlet 23 is inserted above the middle of the groove 251 for feeding and grinding bottle preform raw materials.

[0040] Multiple synchronous shafts 27 are provided between the feeding mechanism 2 and the mold closing mechanism 4 for stable movement during injection molding demolding.

[0041] The power output end of the second motor 41 is connected to a second pulley 42, and a lead screw 43 is inserted inside it. The end of the lead screw 43 is in contact with the assembly template 44, and the assembly template 44 is moved linearly as the lead screw 43 rotates.

[0042] Multiple cooling fans 45 are provided on the outside of the mold plate 44 and the injection cavity 3, which are cooled by high-speed air blowing during injection, for the rapid cooling and separation of the plastic preform.

[0043] Please refer to the instruction manual appendix. Figures 2-5 This embodiment provides a second embodiment of a high-efficiency and energy-saving plastic preform injection molding machine. In this embodiment, the feed paddle 25 of the injection molding machine adopts an optical axis design with spiral grooves 251. The groove design 251 not only facilitates the conveying of raw materials, but also has a bucket-shaped feed inlet 23 connected to the upper middle part, which is specifically used for feeding and preliminary grinding of preform raw materials. This design ensures that the raw materials are fully processed before entering the injection cavity 3.

[0044] Multiple synchronous shafts 27 are installed between the feeding mechanism 2 and the mold closing mechanism 4. These synchronous shafts 27 are designed to ensure stable movement during injection molding and demolding, avoiding the offset problems that may occur in traditional structures, thereby ensuring the smooth operation of the entire production process.

[0045] In this embodiment, the mold clamping mechanism 4 is driven by a second motor 41. A second pulley 42 is connected to the power output end of the second motor 41, and a lead screw 43 is inserted into the pulley. The end of the lead screw 43 abuts against the mold clamping plate 44, and the mold clamping plate 44 can move linearly through the rotation of the lead screw 43. This design allows the mold clamping plate 44 to perform precise forward and backward movements during injection molding and demolding.

[0046] Multiple cooling fans 45 are provided on the outside of the mold plate 44 and the injection cavity 3. The arrangement of the cooling fans 45 is to provide high-speed airflow cooling during the injection molding process, ensuring that the plastic preform can be cooled and removed from the injection cavity 3 quickly, which helps to shorten the cooling time and speed up the production cycle.

[0047] Furthermore, in this embodiment, the injection molding machine has a compact overall structure, and the components are coordinated through precise mechanical connections. The combination of the optical axis design of the feed paddle 25 and the spiral groove 251 enables the raw material to be efficiently transported and ground, while the cooperation between the second motor 41 and the lead screw 43 ensures the precise movement of the mold plate 44.

[0048] In summary, the plastic preform injection molding machine in this embodiment achieves a highly efficient production process through optimized design of feeding, mold closing, and cooling processes. The equipment has a compact structure, is easy to operate, and is suitable for plastic preform production environments of various scales. In practical applications, this injection molding machine provides stable performance and reliable production output, offering an effective solution for the plastic products industry.

[0049] Example 3

[0050] Combination Figure 1 As shown, based on the above embodiments, this embodiment further provides the following:

[0051] In this embodiment, the bottom of the mold plate 44 and the injection cavity 3 is provided with an openable and closable discharge port 6 for collecting and discharging plastic preforms.

[0052] An emergency stop button 5 is provided on the housing 1, which is connected to a first motor 21 and a second motor 41 for emergency start and stop of the injection molding machine.

[0053] Please refer to the instruction manual appendix. Figure 1 This embodiment provides a third embodiment of a high-efficiency and energy-saving plastic preform injection molding machine. In this embodiment, the bottom of the molding platen 44 and the injection cavity 3 of the injection molding machine are provided with an openable and closable discharge port 6. The discharge port 6 is designed for collecting and discharging the plastic preform, so that after injection molding, the preform can be smoothly discharged from the injection cavity 3 and enter the subsequent processing stage.

[0054] Furthermore, to ensure operational safety and emergency control of the equipment, an emergency stop button 5 is provided on the housing 1 in this embodiment. The emergency stop button 5 is connected to the first motor 21 and the second motor 41, and is designed for rapid start-up and shutdown of the injection molding machine in emergency situations. This button allows operators to react quickly when an unexpected situation requires immediate equipment shutdown, thereby avoiding potential safety hazards and equipment damage.

[0055] In summary, the plastic preform injection molding machine in this embodiment achieves a highly efficient production process through optimized design of aspects such as material discharge and safety control. The equipment has a compact structure, is easy to operate, and is suitable for plastic preform production environments of various scales. In practical applications, this injection molding machine can provide stable performance and reliable production output, offering an effective solution for the plastics industry.

[0056] Working principle and usage process of this utility model:

[0057] Machine initialization and preparation: Before powering on, ensure the inside of housing 1 is clean and all connections are secure. Adjust emergency stop button 5 to ensure it is in the off position when not in operation.

[0058] Raw material preparation: Feed the preform raw material into the hopper-shaped inlet 23, ensuring that the raw material eventually falls into the feed paddle 25 of the transfer pipe 24. Observe the raw material for foreign objects and clean it if necessary.

[0059] Initiate injection molding operation: Start the first motor 21, and the feeding mechanism 2 begins operation. The feeding paddle 25 rotates accordingly, evenly feeding the raw material into the injection cavity 3. Observe the feeding process to ensure that the raw material is not stuck or blocked.

[0060] Heating and Injection Molding: The first motor 21 drives the first pulley 22, and the heating ring 26 evenly heats the preform material. The rotation of the feed paddle 25 propels the material forward in the injection cavity 3, completing the injection molding process.

[0061] Mold closing operation: Start the second motor 41 at the rear end of the housing 1. The lead screw 43 rotates accordingly, driving the mold closing plate 44 to move towards the injection cavity 3, thus closing the mold. Observe the contact between the mold closing plate 44 and the injection cavity 3 to ensure that the mold closing is stable.

[0062] Mold closing-demolding process: As the lead screw 43 rotates, the mold closing plate 44 moves along the injection cavity 3 and gradually detaches from the injection cavity 3.

[0063] Cooling and Unloading: After mold closing, activate the air blower between the mold closing plate 44 and the injection cavity 3. Quickly blow air to cool the preform, ensuring rapid demolding. Observe the discharge port 6 for any material overflow and clean it if necessary.

[0064] Complete the injection molding cycle: After air cooling, turn off the air blower and remove the cooling fan 45. Collect the cooled preform through the mold plate 44 and the outlet 6 of the injection cavity 3. After completing one injection molding cycle, repeat the above steps to begin the next production cycle.

[0065] End of Operation: The operator adjusts the feeding speed or injection parameters according to production needs. Exit the system, turn off the second motor 41, and wait for the inside of the housing 1 to cool to a safe temperature. The operator checks for any abnormalities, such as raw material damage or uneven cooling, and takes action if necessary. Turn off the emergency stop button 5 to ensure safe system operation.

[0066] Machine Maintenance: After the machine has finished operating, perform routine maintenance and cleaning. Inspect all connections and transmission components to ensure they are in normal working order. Replace any necessary coolant or lubricating oil to extend the machine's service life.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency and energy-saving plastic preform injection molding machine, comprising a housing (1) with an outer periphery, wherein a feeding mechanism (2) and an injection cavity (3) are arranged inside the housing, and a mold closing mechanism (4) is provided opposite to the injection cavity (3), for injection molding of plastic preforms, characterized in that: The feeding mechanism (2) includes a first motor (21) mounted at the head end of the housing (1), a first pulley (22) sleeved on its power output end, a transfer pipe (24) connected to the first pulley (22), and a plurality of heating rings (26) sleeved on the transfer pipe (24) to heat the bottle preform raw material. A rotatable feeding paddle (25) is rotated inside the pipe, and the end of the feeding paddle (25) is connected to the injection cavity (3). The mold closing mechanism (4) includes a second motor (41) located at the rear end of the housing (1), which is connected to a lead screw (43). The end of the lead screw (43) is provided with a mold closing plate (44) arranged opposite to the injection cavity (3). The mold closing and demolding are realized by the drive of the lead screw (43) to move forward and backward.

2. The high-efficiency and energy-saving plastic preform injection molding machine according to claim 1, characterized in that: The feeding paddle (25) is designed with an optical axis and has spiral grooves (251) on it. A bucket-shaped feed inlet (23) is connected and inserted above the middle of the grooves (251) for feeding and grinding bottle preform raw materials.

3. The high-efficiency and energy-saving plastic preform injection molding machine according to claim 2, characterized in that: Multiple synchronous shafts (27) are provided between the feeding mechanism (2) and the mold closing mechanism (4) for stable movement during injection molding demolding.

4. The high-efficiency and energy-saving plastic preform injection molding machine according to claim 3, characterized in that: The power output end of the second motor (41) is connected to a second pulley (42), and a lead screw (43) is inserted inside it. The end of the lead screw (43) is in contact with the assembly template (44), and the assembly template (44) is pulled to move linearly as the lead screw (43) rotates.

5. The high-efficiency and energy-saving plastic preform injection molding machine according to claim 4, characterized in that: Multiple cooling fans (45) are provided on the outside of the mold plate (44) and the injection cavity (3) to cool the plastic preform by blowing air at high speed during injection.

6. The high-efficiency and energy-saving plastic preform injection molding machine according to claim 5, characterized in that: The bottom of the mold plate (44) and the injection cavity (3) are provided with an openable and closable discharge port (6) for collecting and discharging plastic preforms.

7. A high-efficiency and energy-saving plastic preform injection molding machine according to any one of claims 1-6, characterized in that: An emergency stop button (5) is provided on the housing (1), which is connected to a first motor (21) and a second motor (41) for emergency start and stop of the injection molding machine.

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