Blow molding nozzle with flexible blow angle

Abstract

The utility model relates to the technical field of plastic processing equipment, specifically discloses a blow molding nozzle capable of flexibly adjusting blowing angle, which comprises: a nozzle main body shell, which serves as a basic frame of overall structure, and has an airflow channel formed inside; a limiting pipe fitting is threadedly connected to the other end of the nozzle main body shell, and together they constitute the main pipeline of the blow molding nozzle. The blow molding nozzle capable of flexibly adjusting blowing angle is capable of flexibly adjusting blowing angle through the cooperation of the depth adjusting pipe and the inclined nozzle. One end of the depth adjusting pipe is butted against the auxiliary spring, and the other end is clamped into the inclined nozzle. By sliding the depth adjusting pipe, the position of the inclined nozzle in the nozzle main body shell can be changed. The blowing angle is accurately adjusted by using the inclined structure of the inclined nozzle. When producing products of different specifications or shapes, the nozzle does not need to be replaced. By adjusting the depth adjusting pipe, the blowing direction can be quickly changed, and the equipment can adapt to diversified blow molding process requirements.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing equipment technology, specifically to a blow molding nozzle with a flexible air blowing angle. Background Technology

[0002] In the field of plastics processing, blow molding is a common production process. Compressed air is blown into a heated and softened plastic preform, causing it to expand and conform to the mold cavity, thus obtaining a plastic product of the desired shape. Currently, common blow molding nozzles on the market typically consist of an air inlet channel, a nozzle, and a fixed support. Compressed air is delivered through the air inlet channel to the nozzle and ejected, using gas pressure to form the plastic preform. This type of nozzle has a relatively simple structure, meets the basic requirements of blow molding processes, and is widely used in the production of plastic containers, films, and other products.

[0003] The blowing angle of traditional nozzles is fixed during installation. When producing products of different specifications or shapes, it is difficult to quickly adjust the blowing direction according to specific process requirements, resulting in poor equipment applicability. Frequent nozzle replacement not only increases production costs but also reduces production efficiency. Furthermore, some nozzles with angle adjustment functions have complex adjustment mechanisms and are cumbersome to operate. After long-term use, they are prone to loosening and jamming, affecting the stability and accuracy of the blowing angle, which in turn leads to fluctuations in the molding quality of plastic products. Utility Model Content

[0004] The purpose of this invention is to provide a blow molding nozzle with a flexible air blowing angle, in order to solve the problem mentioned in the background art that the air blowing angle of traditional nozzles is fixed during installation. When it is necessary to produce products of different specifications or shapes, it is difficult to quickly adjust the air blowing direction according to specific process requirements, resulting in poor equipment applicability. In addition, nozzles with angle adjustment function have complex adjustment mechanisms, are cumbersome to operate, and are prone to loosening and jamming after long-term use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a blow molding nozzle with adjustable blowing angle, including a nozzle body shell, which serves as the basic frame of the overall structure, and an airflow channel is formed inside it. The other end of the nozzle body shell is threadedly connected to a limiting pipe, which together constitute the main pipe of the blow molding nozzle.

[0006] The inner cavity of the limiting tube has a rubber ring with an L-shaped cross-section, and an auxiliary spring is embedded in the rubber ring. The auxiliary spring is connected to one end of the depth adjustment tube, and the depth adjustment tube passes through the guide frame, and the guide frame is fixed at the nozzle of the limiting tube.

[0007] The depth adjustment tube nozzle end is inserted into the inclined nozzle, and one end of the depth adjustment tube abuts against the guide ring. The guide ring is connected to the air inlet pipe, and the equidistant inclined holes on the side wall of the air inlet pipe are aligned with the air inlet pipe. The air inlet pipe is inside the nozzle body shell, and a one-way valve is installed in each air inlet pipe.

[0008] By adopting the above technical solution, the components work closely together, enhancing the overall structural stability and improving the equipment's applicability, ease of operation, and operational reliability.

[0009] Preferably, the auxiliary spring surrounds the outer layer of the guide ring, and the inner diameter of the guide ring is consistent with the diameter of the intake port pipe interface.

[0010] By adopting the above technical solution, the auxiliary spring surrounds the outer layer of the guide ring, providing stable elastic support for the depth adjustment tube. During the adjustment of the blowing angle, it ensures that the depth adjustment tube is subjected to uniform force, prevents deviation, and enhances the adjustment stability.

[0011] Preferably, the depth adjustment tube is L-shaped at the end near the auxiliary spring, and a fan-shaped plate is provided on the outer wall of the depth adjustment tube, and the fan-shaped plate is close to the outer layer of the guide frame.

[0012] By adopting the above technical solution, the L-shaped end of the depth adjustment tube is connected to the auxiliary spring, optimizing the force structure, making the depth adjustment tube slide more smoothly, and reducing the adjustment resistance.

[0013] Preferably, the outer wall of the guide frame has symmetrical stepped grooves, and the stepped grooves of the guide frame abut against the fan-shaped plate of the depth adjustment tube.

[0014] Using the above technical solution, the stepped groove of the guide frame abuts against the fan-shaped plate of the depth adjustment tube, forming a stable guide structure. When adjusting the blowing angle, it effectively constrains the movement direction of the depth adjustment tube and prevents it from moving arbitrarily.

[0015] Preferably, the internal pipe of the air inlet pipe is inclined, and one end of the air inlet pipe is engaged with the pipe opening of the nozzle body shell.

[0016] By adopting the above technical solution, the internal pipe of the air inlet interface pipe is inclined, which optimizes the path of airflow into the nozzle body shell, reduces airflow resistance, and makes the airflow more smoothly delivered.

[0017] Preferably, the intake pipe is composed of an annular channel and a beveled channel, and the beveled channel of the intake pipe is connected to the beveled hole of the intake interface pipe, and the annular channel of the intake pipe is connected to the extension pipe.

[0018] By adopting the above technical solution, the design of the annular channel and the inclined channel of the air inlet pipe realizes the reasonable diversion and guidance of airflow. Combined with the inclined hole of the air inlet pipe, it ensures that the airflow enters the nozzle evenly and stably, providing a stable air source for the blow molding process.

[0019] Preferably, the extension tube is L-shaped and is fitted with one end of the diversion tube, and the diversion tube has a T-shaped structure.

[0020] By adopting the above technical solution, the L-shaped extended tube is fitted with the diverter tube to further optimize the airflow distribution path, so that the compressed air is evenly distributed, ensuring that the plastic preform is subjected to uniform force in all parts during the blow molding process, and improving the molding quality of plastic products.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the blow molding nozzle with flexibly adjustable blowing angle:

[0022] 1. By cooperating with the depth adjustment tube and the inclined nozzle, the blowing angle can be flexibly adjusted. One end of the depth adjustment tube is connected to the auxiliary spring, and the other end is inserted into the inclined nozzle. By sliding the depth adjustment tube, the position of the inclined nozzle in the nozzle body shell can be changed. By utilizing the inclined structure of the inclined nozzle, the blowing angle can be precisely adjusted. When producing products of different specifications or shapes, there is no need to change the nozzle. The blowing direction can be quickly changed simply by adjusting the depth adjustment tube, so that the equipment can adapt to diverse blow molding process requirements.

[0023] 2. Through the coordinated design of limiting tube, rubber ring, auxiliary spring and guide frame, the adjustment process is simplified. The limiting tube is threaded to the nozzle body shell. The L-shaped rubber ring in its inner cavity has an auxiliary spring built in, which provides elastic support for the depth adjustment tube. The guide frame is fixed at the nozzle of the limiting tube. The stepped groove on its outer wall abuts against the fan-shaped plate on the outer wall of the depth adjustment tube to form a stable sliding guide structure. By simply pushing or pulling the depth adjustment tube, the blowing angle can be quickly adjusted with the help of the elastic feedback of the auxiliary spring and the limiting effect of the guide frame. There is no need for complicated operation steps and professional tools, which reduces the difficulty of operation and improves the convenience and efficiency of blow molding production.

[0024] 3. Stability is ensured through multiple structural designs. The L-shaped structure of the rubber ring not only serves as a seal but also stabilizes the position of the auxiliary spring, ensuring its long-term stability in providing elastic force to the depth adjustment tube. The fan-shaped plate on the outer wall of the depth adjustment tube and the stepped groove of the guide frame fit tightly together, limiting the sliding trajectory of the depth adjustment tube and preventing it from shifting or shaking during use. At the same time, the threaded connection between each component, such as the threaded connection between the nozzle body shell and the limiting tube, and the snap-fit ​​connection between the air inlet pipe and the nozzle body shell, all adopt a stable connection method, further enhancing the overall structural robustness. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of this utility model;

[0026] Figure 2 This is a top-section three-dimensional structural diagram of the overall internal structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the overall disassembled three-dimensional structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the overall internal side section of the present invention.

[0029] Figure 5 This is a three-dimensional structural diagram of the depth adjustment tube and guide frame of this utility model.

[0030] Figure 6 This is a schematic diagram of the installation structure of the nozzle body shell and the air inlet pipe of this utility model.

[0031] In the diagram: 1. Nozzle body shell; 2. Limiting fitting; 3. Rubber ring; 4. Auxiliary spring; 5. Depth adjustment tube; 6. Guide frame; 7. Angled nozzle; 8. Guide ring; 9. Air inlet interface tube; 10. Air inlet pipe; 11. One-way valve; 12. Extension tube; 13. Diverter tube. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-6 This utility model provides a technical solution: a blow molding nozzle with adjustable blowing angle, including nozzle body shell 1, limiting tube 2, rubber ring 3, auxiliary spring 4, depth adjustment tube 5, guide frame 6, inclined nozzle 7, guide ring 8, air inlet interface tube 9, air inlet pipe 10, one-way valve 11, extension tube 12 and diversion tube 13;

[0034] Among them, the nozzle body shell 1 serves as the basic frame of the overall structure, and an airflow channel is formed inside it. The other end of the nozzle body shell 1 is threadedly connected to the limiting pipe 2, which together constitute the main pipeline of the blow molding nozzle.

[0035] The inner cavity of the limiting tube 2 has a rubber ring 3, and the cross-section of the rubber ring 3 is L-shaped. An auxiliary spring 4 is embedded in the rubber ring 3. The auxiliary spring 4 is connected to one end of the depth adjustment tube 5. The depth adjustment tube 5 passes through the guide frame 6. The guide frame 6 is fixed at the nozzle of the limiting tube 2. The auxiliary spring 4 surrounds the outer layer of the guide ring 8. The inner diameter of the guide ring 8 is the same as the diameter of the inlet interface tube 9. The end of the depth adjustment tube 5 near the auxiliary spring 4 is L-shaped. A fan-shaped plate is provided on the outer wall of the depth adjustment tube 5. The fan-shaped plate is close to the outer layer of the guide frame 6. The outer wall of the guide frame 6 has symmetrical stepped grooves. The stepped grooves of the guide frame 6 abut against the fan-shaped plate of the depth adjustment tube 5.

[0036] Referring to the attached diagrams in the instruction manual Figures 1-6 By means of threaded connection, the limiting tube 2 is screwed into one end of the nozzle body shell 1. In the inner cavity of the limiting tube 2, a rubber ring 3 with an L-shaped cross section is embedded to ensure that the rubber ring 3 is completely in contact with the inner wall of the limiting tube 2, so as to play a sealing role and prevent air leakage. The auxiliary spring 4 is placed in the rubber ring 3 and wrapped around the outer layer of the guide ring 8 to ensure that the two ends of the auxiliary spring 4 are evenly stressed, and the inner diameter of the guide ring 8 is precisely matched with the diameter of the air inlet pipe 9 to provide stable elastic support for the subsequent sliding of the depth adjustment tube 5. The end of the depth adjustment tube 5 with the L-shaped end is connected to the auxiliary spring 4 to ensure that the two are in close contact, so that the depth adjustment tube 5 passes through the guide frame 6 fixed at the nozzle of the limiting tube 2. At this time, the fan-shaped plate of the outer wall of the depth adjustment tube 5 should abut against the symmetrical stepped groove of the outer wall of the guide frame 6 to form a stable sliding guide structure. Then, the inclined nozzle 7 is inserted into the nozzle end of the depth adjustment tube 5 to ensure that it is firmly locked and there is no looseness.

[0037] The equidistant oblique holes on the side wall of the air inlet pipe 9 should be precisely aligned with the air inlet pipe 10 inside the nozzle body housing 1. Then, the air inlet pipe 10 is installed and fixed inside the nozzle body housing 1. A one-way valve 11 is installed in each air inlet pipe 10 to prevent airflow backflow. According to actual usage requirements, the extension pipe 12 is connected to the annular channel of the air inlet pipe 10, and the other end is fitted with the diverter pipe 13 to complete the installation of the entire airflow channel.

[0038] The nozzle end of the depth adjustment pipe 5 is inserted into the inclined nozzle 7, and one end of the depth adjustment pipe 5 abuts against the guide ring 8. The guide ring 8 is connected to the air inlet pipe 9, and the equidistant inclined holes on the side wall of the air inlet pipe 9 are aligned with the air inlet pipe 10. The air inlet pipe 10 is inside the nozzle body shell 1, and a one-way valve 11 is installed in each air inlet pipe 10. The internal pipe of the air inlet pipe 9 is inclined, and one end of the air inlet pipe 9 is engaged with the pipe opening of the nozzle body shell 1. The air inlet pipe 10 is composed of an annular channel and an inclined channel, and the inclined channel of the air inlet pipe 10 is connected to the inclined hole of the air inlet pipe 9. The annular channel of the air inlet pipe 10 is connected to the extension pipe 12. The extension pipe 12 is L-shaped, and one end of the extension pipe 12 is fitted with the diverter pipe 13. The diverter pipe 13 is a three-way pipe structure.

[0039] Referring to the attached diagrams in the instruction manual Figures 1-6 Turn on the external air supply equipment. Based on the material, thickness and blow molding process requirements of the plastic preform, adjust the valves and controllers of the air supply equipment to set the air inlet pressure and flow rate of the air inlet pipe 9. The inclined pipe design inside the air inlet pipe 9 helps to initially stabilize the airflow. The air enters the air inlet pipe 10 through the inclined hole in the side wall. The annular channel and inclined channel structure of the air inlet pipe 10 realize the reasonable diversion and guidance of the airflow. Start the blow molding equipment. External compressed air is introduced through the air inlet pipe 9. After being initially guided along the inclined pipe, it enters the air inlet pipe 10 through the inclined hole in the side wall. After being diverted and guided by the inclined channel and the annular channel, part of the airflow enters the diversion pipe 13 through the extension pipe 12 for secondary diversion. Finally, it is evenly and stably delivered to the inclined nozzle 7.

[0040] With the elastic support of the auxiliary spring 4, the depth adjustment tube 5 remains stable. When it is necessary to fine-tune the blowing angle, the depth adjustment tube 5 can be manually rotated again to change the relative position of the inclined nozzle 7 in the nozzle body. The inclined structure of the inclined nozzle 7 is used to spray compressed air at the adjusted angle, which acts on the plastic preform, causing it to expand and fit into the mold cavity, thus completing the blow molding process.

[0041] Working principle: When using this blow molding nozzle with adjustable blowing angle, external compressed air is introduced through the air inlet pipe 9. Because the internal pipe of the air inlet pipe 9 is inclined, it can initially guide the airflow. The side wall of the air inlet pipe 9 has equally spaced oblique holes, which are aligned with the air inlet pipe 10 inside the nozzle body shell 1. The airflow enters the air inlet pipe 10 through the oblique holes. The air inlet pipe 10 is composed of an annular channel and an oblique channel. The oblique channel receives the airflow from the oblique holes of the air inlet pipe 9, while the annular channel is connected to the extension pipe 12 to form a multi-way airflow delivery structure. In addition, the one-way valve 11 in each air inlet pipe 10 can prevent airflow backflow and ensure the stability of air supply.

[0042] The limiting tube 2 is threadedly connected to the nozzle body shell 1, forming the main pipe. The built-in auxiliary spring 4 surrounds the outer layer of the guide ring 8, providing elastic support for the depth adjustment tube 5. One end of the depth adjustment tube 5 is L-shaped and docks with the auxiliary spring 4. It can slide axially under the action of the spring force. Its outer fan-shaped plate abuts against the stepped groove of the guide frame 6. The guide frame 6 is fixed at the nozzle of the limiting tube 2. By rotating the direction of the depth adjustment tube 5, its outer fan-shaped plate and the stepped groove of the guide frame 6 gradually move outward, thereby realizing depth adjustment, limiting the sliding trajectory of the depth adjustment tube 5, and ensuring the stability of the adjustment process. The nozzle end of the depth adjustment tube 5 is inserted into the inclined nozzle 7. When the depth adjustment tube 5 slides axially, it drives the inclined nozzle 7 to move synchronously, changing the relative position of the inclined nozzle 7 in the nozzle body. By using the inclined structure of the inclined nozzle 7, the blowing angle can be flexibly adjusted to adapt to the airflow direction requirements of different blow molding processes, increasing the overall practicality.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Blow molding nozzles with adjustable blowing angle, including: The nozzle body shell (1) serves as the basic frame of the overall structure, and an airflow channel is formed inside it. The other end of the nozzle body shell (1) is threaded to a limiting pipe fitting (2), which together constitute the main pipeline of the blow molding nozzle. The feature is that: the inner cavity of the limiting tube (2) has a rubber ring (3), and the cross-section of the rubber ring (3) is L-shaped, and an auxiliary spring (4) is installed inside the rubber ring (3). The auxiliary spring (4) is connected to one end of the depth adjustment tube (5), and the depth adjustment tube (5) passes through the guide frame (6), and the guide frame (6) is fixed at the nozzle of the limiting tube (2); The nozzle end of the depth adjustment tube (5) is inserted into the inclined nozzle (7), and one end of the depth adjustment tube (5) abuts against the guide ring (8). The guide ring (8) is connected to the air inlet pipe (9), and the oblique holes on the side wall of the air inlet pipe (9) are aligned with the air inlet pipe (10). The air inlet pipe (10) is inside the nozzle body shell (1), and a one-way valve (11) is installed in each air inlet pipe (10).

2. The blow molding nozzle with adjustable blowing angle according to claim 1, characterized in that: The auxiliary spring (4) surrounds the outer layer of the guide ring (8), and the inner diameter of the guide ring (8) is consistent with the diameter of the air intake interface pipe (9).

3. The blow molding nozzle with adjustable blowing angle according to claim 1, characterized in that: The depth adjustment tube (5) is L-shaped at one end near the auxiliary spring (4), and a fan-shaped plate is provided on the outer wall of the depth adjustment tube (5), and the fan-shaped plate is close to the outer layer of the guide frame (6).

4. The blow molding nozzle with adjustable blowing angle according to claim 1, characterized in that: The outer wall of the guide frame (6) has symmetrical stepped grooves, and the stepped grooves of the guide frame (6) abut against the fan-shaped plate of the depth adjustment tube (5).

5. The blow molding nozzle with adjustable blowing angle according to claim 1, characterized in that: The internal pipe of the air inlet pipe (9) is inclined, and one end of the air inlet pipe (9) is engaged with the pipe opening of the nozzle body shell (1).

6. The blow molding nozzle with adjustable blowing angle according to claim 1, characterized in that: The intake pipe (10) is composed of an annular channel and a sloping channel, and the sloping channel of the intake pipe (10) is connected to the sloping hole of the intake interface pipe (9), and the annular channel of the intake pipe (10) is connected to the extension pipe (12).

7. The blow molding nozzle with flexibly adjustable blowing angle according to claim 6, characterized in that: The extension tube (12) is L-shaped and is fitted with one end of the diversion tube (13), and the diversion tube (13) is a three-way tube structure.

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