An adjustable foaming head with a foam-like structure

Abstract

This utility model belongs to the technical field of foaming machine heads, specifically an adjustable foaming machine head with a foam-like structure. It includes a foaming machine head body, a die fixedly connected to the output end of the body, four supports fixedly connected to the exterior of the body, threaded rods threaded inside the supports, a circular plate fixedly connected to one end of each threaded rod, and the other end rotatably connected to the outer wall of the die. A flange is fixedly connected to the outer wall of the foaming machine head body away from the die, and a flow divider is fixedly connected inside the body near the flange. A perforated plate is fixedly connected inside the body. This utility model uses a handle to rotate the circular plate and threaded rods, and the threaded transmission of the supports causes the threaded rods to extend and retract, thereby pushing the die and the output end of the foaming machine head body to achieve fine-tuning of their positions. The entire adjustment process requires no complicated steps, is labor-saving and precise, and can quickly adapt the die position, effectively shortening the adjustment time.

Description

Technical Field

[0001] This utility model belongs to the field of foaming machine head technology, specifically a foaming machine head with an adjustable foam structure. Background Technology

[0002] Foaming heads are mainly used for foaming and molding of polymer materials, especially in the extrusion or injection molding of foam products. They are widely used in industries such as building insulation, automotive lightweighting, packaging cushioning, and new chemical materials. Their core function is to precisely control the uniform mixing of foaming agent and polymer melt, the bubble generation process, and the adjustment of cell structure to ensure that foam products meet specific performance requirements. Currently, foaming machine heads on the market mainly consist of a flow channel system, a temperature control module, and a precision injection device. They mainly optimize the material flow state within the flow channel, adjust temperature and pressure parameters in real time, and precisely match the amount of foaming agent injected to achieve the effects of stably generating uniform cells, improving the mechanical strength and performance of foam products, and reducing product weight. The existing adjustable foaming head with a foam-like structure is somewhat complicated to operate when adjusting the shape of the head, which affects work efficiency, and the foaming effect of the internal foaming mechanism is not good. Summary of the Invention

[0003] The purpose of this invention is to provide a foaming head with an adjustable foam structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable foaming head with a foaming structure, comprising a foaming head body, a die fixedly connected to the output end of the foaming head body, four supports fixedly connected to the outside of the foaming head body, threaded rods threadedly connected inside the supports, a circular plate fixedly connected to one end of the threaded rod, and the other end of the threaded rod rotatably connected to the outer wall of the die.

[0005] As a further description of the above technical solution: A flange is fixedly connected to the outer wall of the foaming head body at the end away from the die. A flow divider is fixedly connected inside the foaming head body at the end near the flange. A perforated plate is fixedly connected inside the foaming head body. A first throttle valve is rotatably connected inside the foaming head body. A second throttle valve is rotatably connected inside the foaming head body.

[0006] As a further description of the above technical solution: The foaming head body is fitted with a heating wire, and a protective shell is fixedly connected to the outside of the foaming head body.

[0007] As a further description of the above technical solution: The circular plate is fixedly connected to a handle on the outside.

[0008] As a further description of the above technical solution: The first throttle valve is located on one side of the heating wire, and the second throttle valve is located on the other side of the heating wire.

[0009] As a further description of the above technical solution: The heating wire is located inside the protective casing.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model uses a handle to rotate a circular plate and a threaded rod. The threaded rod extends and retracts via the screw drive of the bracket, thereby pushing the die and the output end of the foaming machine head to achieve fine-tuning of their positions. The entire adjustment process requires no complicated steps, is labor-saving and precise, and can quickly adapt the die position, effectively shortening adjustment time and significantly improving work efficiency.

[0011] 2. This utility model ensures stable molten material delivery through flanges. After being evenly distributed by a flow divider and filtered for impurities by a perforated plate, the molten material's state upon entering the heating zone is regulated by a first throttle valve. The heating wire provides precise temperature control, and the protective shell ensures temperature stability. A second throttle valve further regulates the molten material's state after heating. All components work together to provide stable conditions for foaming, resulting in more uniform cell size, improved foaming effect, and guaranteed performance and quality of the foamed products. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the protective shell of this utility model; Figure 3 This is a schematic diagram of the structure of the heating wire of this utility model; Figure 4 This is a schematic diagram of the structure of the first throttle valve of this utility model; Figure 5 This is a schematic diagram of the circular plate of this utility model.

[0013] In the diagram: 1. Foaming machine head body; 2. Flange; 3. Diverter shuttle; 4. Perforated plate; 5. First throttle valve; 6. Second throttle valve; 7. Heating wire; 8. Protective shell; 9. Die; 10. Support; 11. Threaded rod; 12. Round plate; 13. Handle. Detailed Implementation

[0014] 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.

[0015] Reference Figures 2-4 An embodiment of this utility model is provided: an adjustable foaming head with a foam structure, including a foaming head body 1, a die 9 fixedly connected to the output end of the foaming head body 1, four supports 10 fixedly connected to the outside of the foaming head body 1, threaded rods 11 threadedly connected inside the supports 10, a circular plate 12 fixedly connected to one end of the threaded rod 11, and the other end of the threaded rod 11 rotatably connected to the outer wall of the die 9.

[0016] Four brackets 10 provide stable mounting support for the threaded rod 11. By rotating the threaded rod 11, it can be driven to extend and retract within the bracket 10 through the threaded transmission, thereby pushing or pulling the die 9 connected to it. This allows for fine adjustment of the relative position between the die 9 and the output end of the foaming head body 1, ensuring that the polymer melt maintains a stable flow trajectory when entering the die 9 from the foaming head body 1, and providing a suitable outlet channel for the uniform molding of the subsequent cell structure.

[0017] Reference Figures 1-3 A flange 2 is fixedly connected to the outer wall of the end of the foaming head body 1 away from the die 9. A diverter shuttle 3 is fixedly connected to the inner wall of the end of the foaming head body 1 near the flange 2. A perforated plate 4 is fixedly connected to the inner wall of the foaming head body 1. A first throttle valve 5 is rotatably connected to the inner wall of the foaming head body 1. A second throttle valve 6 is rotatably connected to the inner wall of the foaming head body 1.

[0018] Flange 2 is used to achieve a sealed connection between the foaming die head body 1 and the external extrusion equipment or feeding device, preventing material leakage and ensuring stable material delivery to the interior of the foaming die head body 1; the diverter shuttle 3 can evenly divert the polymer melt entering from flange 2, avoiding local accumulation of melt in the foaming die head body 1, and ensuring that the melt can fully contact the foaming agent in the future; the perforated plate 4 can filter the flowing melt, removing impurities or incompletely melted particles from the melt, preventing impurities from clogging the subsequent structure and affecting the foaming effect; the first throttle valve 5 and the second throttle valve 6 can adjust their opening degree by rotation, thereby controlling the flow speed and pressure of the melt in different sections of the foaming die head body 1, providing a suitable fluid environment for the mixing of melt and foaming agent and the generation of bubbles.

[0019] Reference Figure 3 and Figure 4The foaming head body 1 is fitted with an electric heating wire 7, and a protective shell 8 is fixedly connected to the outside of the foaming head body 1.

[0020] When the heating wire 7 is energized, it generates heat and transfers it to the interior of the foaming head body 1. According to the foaming process requirements of different polymer materials, the temperature inside the foaming head body 1 is precisely adjusted to ensure that the melt maintains suitable fluidity and provides the necessary temperature conditions for the decomposition of the foaming agent. The protective shell 8 can isolate the heating wire 7 from the external environment. On the one hand, it reduces the heat loss generated by the heating wire 7, improves heating efficiency and maintains the temperature stability of the foaming head body 1. On the other hand, it prevents external objects from contacting the high-temperature heating wire 7 and ensures the safe operation of the equipment.

[0021] Reference Figure 4 and Figure 5 The circular plate 12 is externally fixedly connected to a handle 13.

[0022] The handle 13 facilitates the rotation of the threaded rod 11. Rotating the handle 13 can drive the circular plate 12 to rotate synchronously, thereby driving the threaded rod 11 to extend and retract within the bracket 10. Compared to directly rotating the threaded rod 11, this method can control the adjustment range of the die 9 more efficiently and precisely, improving operational convenience and adjustment accuracy.

[0023] Reference Figure 3 and Figure 4 The first throttle valve 5 is located on one side of the heating wire 7, and the second throttle valve 6 is located on the other side of the heating wire 7.

[0024] The first throttle valve 5 is located on one side of the heating wire 7. It can regulate the flow rate and pressure of the melt before it enters the heating zone, so that the melt enters the heating range of the heating wire 7 in a stable state and ensures that the melt temperature changes uniformly during the heating process. The second throttle valve 6 is located on the other side of the heating wire 7. It can regulate the flow rate and pressure of the melt after heating, so that the melt after heating maintains a flow state that meets the requirements for bubble formation before entering the subsequent foaming stage. The two valves work together to achieve full control of the flow parameters of the melt before and after heating in the foaming head body 1, ensuring the stability of the foaming process.

[0025] Reference Figure 3 and Figure 4 The heating wire 7 is located inside the protective shell 8.

[0026] The protective shell 8 completely encloses the heating wire 7, which not only prevents the heating wire 7 from being directly exposed to the external environment and prevents impurities such as dust and moisture from adhering to the surface of the heating wire 7 and affecting its heating performance and service life, but also forms a relatively closed heating space, reducing the heat diffusion to the surroundings and allowing the heat generated by the heating wire 7 to be transferred more concentratedly to the foaming head body 1, improving the accuracy of temperature control and ensuring that the melt temperature inside the foaming head body 1 always meets the foaming process standards.

[0027] Working principle: The external extrusion equipment or feeding device is sealed to the foaming head body 1 through flange 2, stably conveying the polymer melt into the foaming head body 1. The incoming melt is first evenly distributed by the diverter 3 to avoid local accumulation and ensure sufficient contact with the foaming agent. Then it flows through the perforated plate 4, which filters out impurities or incompletely melted particles from the melt to prevent clogging of subsequent structures and affecting the foaming effect. The filtered melt continues to flow, first passing through the first throttle valve 5. The opening and closing degree of the first throttle valve 5 is adjusted by rotating it to control the melt's entry into the heating chamber. The flow velocity and pressure before the zone allow the melt to enter the heating range of the heating wire 7, which is fitted outside the foaming head body 1, in a stable state. The heating wire 7 generates heat when energized and transfers it into the interior of the foaming head body 1. The temperature inside the foaming head body 1 is precisely adjusted according to the foaming process requirements of different materials to ensure that the melt maintains suitable fluidity and provides the necessary temperature conditions for the decomposition of the foaming agent. At the same time, the heating wire 7 is located inside the protective shell 8, which isolates the heating wire 7 from the external environment, reducing heat loss to improve heating efficiency and temperature stability, and preventing external objects from coming into contact with high temperatures. Heating wire 7 is used to ensure safety. The melt heated by heating wire 7 continues to flow to the second throttle valve 6. The second throttle valve 6, by rotating to adjust its opening, again regulates the flow rate and pressure of the heated melt, ensuring it maintains a flow state that meets the requirements for cell formation before entering the subsequent foaming stage. The first throttle valve 5 and the second throttle valve 6 work together to achieve full control of the flow parameters of the melt before and after heating within the foaming head body 1, ensuring a stable foaming process. Finally, the processed melt enters the die 9 from the output end of the foaming head body 1, while the external surface of the foaming head body 1 remains solid. The four fixed supports 10 provide stable installation support for the threaded rod 11. By rotating the handle 13, the circular plate 12 and the threaded rod 11 can be rotated synchronously. With the help of thread transmission, the threaded rod 11 can extend and retract within the support 10, thereby pushing or pulling the die 9 that is rotatably connected to it. This allows for fine adjustment of the relative position between the die 9 and the output end of the foaming head body 1, ensuring that the polymer melt maintains a stable flow trajectory when entering the die 9 from the foaming head body 1. This provides a suitable outlet channel for the uniform molding of the subsequent bubble structure. The adjustability of the bubble structure is achieved through the synergistic effect of each component.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A foaming head with an adjustable foam structure, comprising a foaming head body (1), characterized in that... The output end of the foaming head body (1) is fixedly connected to a die (9). Four brackets (10) are fixedly connected to the outside of the foaming head body (1). A threaded rod (11) is threadedly connected inside the bracket (10). A circular plate (12) is fixedly connected to one end of the threaded rod (11). The other end of the threaded rod (11) is rotatably connected to the outer wall of the die (9).

2. The adjustable foaming head with a foam-like structure according to claim 1, characterized in that... A flange (2) is fixedly connected to the outer wall of the end of the foaming head body (1) away from the die (9). A flow divider (3) is fixedly connected to the inside of the end of the foaming head body (1) close to the flange (2). A perforated plate (4) is fixedly connected inside the foaming head body (1). A first throttle valve (5) is rotatably connected inside the foaming head body (1). A second throttle valve (6) is rotatably connected inside the foaming head body (1).

3. The adjustable foaming head with a foam-like structure according to claim 1, characterized in that... The foaming head body (1) is fitted with an electric heating wire (7), and a protective shell (8) is fixedly connected to the outside of the foaming head body (1).

4. The adjustable foaming head with a foam-like structure according to claim 1, characterized in that... The circular plate (12) is fixedly connected to a handle (13).

5. The adjustable foaming head with a foam-like structure according to claim 2, characterized in that... The first throttle valve (5) is located on one side of the heating wire (7), and the second throttle valve (6) is located on the other side of the heating wire (7).

6. The adjustable foaming head with a foam-like structure according to claim 3, characterized in that... The heating wire (7) is located inside the protective shell (8).

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