A high-efficiency molten plastic uniform distribution nozzle device

Abstract

The utility model relates to the technical field of plastics processing discloses a kind of high-efficiency molten plastics uniform distribution nozzle device, including spray head, the inner wall of spray head is fixedly connected with conveying pipe, the inner wall of conveying pipe is connected with sealing shell, the inner wall of sealing shell is rotatably connected with adjusting disc, the inner wall of adjusting disc is equipped with multiple communication grooves, the outer wall of adjusting disc is fixedly connected with sealing ring, the outer wall of adjusting disc is fixedly connected with connecting rod, the outer wall of connecting rod is fixedly connected with knob, the inner wall of sealing shell is equipped with multiple through holes, the inner wall of through hole is connected with ordinary nozzle, the outer wall of spray head is fixedly connected with melting mechanism.In the utility model, adjusting disc in sealing shell can switch spray head, control flow and spraying thickness, operator turns knob, adjusting disc is rotated by connecting rod, make communication groove and through hole accurate butt joint, switch injection path, realize uniform injection.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, and in particular to a high-efficiency nozzle device for uniformly distributing molten plastic. Background Technology

[0002] High-efficiency molten plastic uniform distribution nozzle devices play a crucial role in the raw material handling and precise spraying process of plastic injection molding. They are used to fully melt the plastic raw material and achieve uniform spraying, completing the directional conveying, flow regulation and stable spraying of molten plastic, so as to ensure the molding quality of plastic products and adapt to the needs of different injection molding scenarios. High-efficiency molten plastic uniform distribution nozzle devices are widely used in the production of injection molded products.

[0003] To achieve uniform spraying of fully melted plastic raw materials, a uniform molten plastic distribution nozzle device is required for directional conveying, flow regulation, and stable spraying of molten plastic. Existing uniform molten plastic distribution nozzle devices are mostly fixed-nozzle structures. This necessitates machine shutdown, disassembly, and recalibration when nozzles need to be changed to suit different products. This not only prolongs equipment downtime but also easily leads to decreased nozzle alignment accuracy due to disassembly and assembly errors, resulting in molten plastic spray deviation and uneven distribution. This increases material waste and product defect rates, while also incurring additional labor and time costs, significantly increasing production costs. Furthermore, frequent downtime and rework consume production time, leading to reduced production efficiency.

[0004] A search revealed Chinese Patent Publication No. CN222695015U, which discloses a nozzle device for uniform coating. The device includes a nozzle body, a nozzle column, and a nozzle end. A trapezoidal large base of a conical sleeve is fixedly connected to one end of the sleeve column, which is fitted onto the nozzle column. The inner wall of the other end of the sleeve column is sealed to the nozzle body. A return hole communicating with a cylindrical channel is provided in the middle of the bottom side of the sleeve column. This invention employs a conical sleeve and sleeve column structure, achieving uniform distribution and effective recovery of liquid during the spraying process. The nozzle end is located within the conical channel, spraying liquid through the trapezoidal small base opening, ensuring uniform edge coverage. Excess liquid is recovered through the return hole and return pipe, avoiding waste. Furthermore, this device can be arrayed to form a continuous and uniform larger spraying area, suitable for large-area workpieces. This invention not only improves spraying efficiency and quality and reduces production costs but also reduces environmental pollution. However, the above utility model patent has obvious defects. The device adopts a fixed nozzle column and sleeve column structure. When it is necessary to replace the nozzle to adapt to different specifications of injection molded products, it is still necessary to stop the machine, disassemble, recalibrate and install. It cannot solve the problems of long equipment idle time and high labor and time costs. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-efficiency nozzle device for uniformly distributing molten plastic, aiming to solve the problem that the existing technology requires machine shutdown and disassembly for nozzle switching and cannot flexibly adapt to multiple injection molding scenarios.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency plastic melting and uniform distribution nozzle device, comprising a nozzle, a conveying pipe fixedly connected to the inner wall of the nozzle, a sealing shell communicating with the inner wall of the conveying pipe, an adjusting disc rotatably connected to the inner wall of the sealing shell, multiple communicating grooves opened on the inner wall of the adjusting disc, a sealing ring fixedly connected to the outer wall of the adjusting disc, a connecting rod fixedly connected to the outer wall of the adjusting disc, a knob fixedly connected to the outer wall of the connecting rod, multiple through holes opened on the inner wall of the sealing shell, ordinary nozzles communicating with the inner wall of the through holes, and a melting mechanism fixedly connected to the outer wall of the nozzle, the melting mechanism being used to fully melt the plastic raw material.

[0007] As a further description of the above technical solution: The melting mechanism includes a threaded cylinder, the outer wall of which is fixedly connected to the outer wall of the nozzle. The inner wall of the threaded cylinder is threadedly connected to a connecting end. The inner wall of the connecting end is connected to a heating section. The outer wall of the heating section is fixedly connected to a melting coil. The inner wall of the heating section is connected to a feeding section. The outer wall of the feeding section is fixedly connected to a preheating coil. The outer wall of the feeding section is fixedly connected to a protective shell.

[0008] As a further description of the above technical solution: The outer wall of the nozzle is fixedly connected to a connecting pipe, and the outer wall of the connecting pipe is slidably connected to a clamping ring.

[0009] As a further description of the above technical solution: The inner wall of the clamp ring is slidably connected with multiple connecting posts, and the inner walls of the multiple connecting posts are threaded with bolts.

[0010] As a further description of the above technical solution: A water supply pipe is fixedly connected to the inner wall of the connecting pipe, and the inner wall of the water supply pipe is connected to the inner wall of the nozzle.

[0011] As a further description of the above technical solution: A pressure pipe is fixedly connected to the inner wall of the connecting pipe, and the inner wall of the pressure pipe is connected to the inner wall of the nozzle.

[0012] As a further description of the above technical solution: The outer wall of the clamp ring is fixedly connected to a support plate, and the outer wall of the support plate is fixedly connected to the outer wall of the water supply pipe and the pressurization pipe respectively.

[0013] As a further description of the above technical solution: The inner walls of the plurality of through holes are connected to pressurizing nozzles, and the inner walls of the plurality of through holes are connected to variable diameter nozzles.

[0014] This utility model has the following beneficial effects: 1. In this utility model, molten plastic is first directionally conveyed through the conveying pipe on the inner wall of the nozzle and stably introduced into the sealed shell. The adjusting plate inside the sealed shell can switch nozzles to control the flow rate and spray thickness. The outer wall sealing ring prevents leakage and ensures sealing. The operator turns the knob, which drives the adjusting plate to rotate through the connecting rod, so that the connecting groove and the through hole are precisely aligned, and the spray path is switched. Finally, the molten plastic enters the ordinary nozzle through the through hole, achieving uniform spraying. This reduces material waste, improves injection molding accuracy and product qualification rate, is suitable for multiple scenarios, and improves production efficiency.

[0015] 2. In this utility model, the outer wall of the threaded cylinder is fixed to the nozzle, providing a stable installation base. The inner wall is threaded to the connecting end, facilitating disassembly and maintenance. During operation, the plastic raw material first enters the feeding section, where the preheating coil on its outer wall provides initial heating, reducing subsequent melting energy consumption. The preheated raw material enters the heating section through the connecting structure, where the melting coil on the outer wall rapidly heats up, completely melting the raw material into a fluid and stable molten plastic. The protective shell on the outer wall of the feeding section isolates heat to prevent burns. This reduces energy consumption and maintenance costs, ensures operational safety, and improves melting quality, laying the foundation for subsequent uniform spraying. Attached Figure Description

[0016] Figure 1 This is a front perspective view of a high-efficiency molten plastic uniform distribution nozzle device proposed in this utility model; Figure 2 This is a partial structural diagram of a high-efficiency nozzle device for uniformly distributing molten plastic proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 This is a partial structural exploded view of the high-efficiency molten plastic uniform distribution nozzle device proposed in this utility model; Figure 5 This is a cross-sectional view of a high-efficiency nozzle device for uniformly distributing molten plastic, as proposed in this utility model.

[0017] Legend: 1. Nozzle; 2. Melting mechanism; 201. Threaded cylinder; 202. Connecting end; 203. Heating section; 204. Melting coil; 205. Feeding section; 206. Preheating coil; 207. Protective shell; 3. Conveying pipe; 4. Sealing shell; 5. Adjusting disc; 6. Connecting groove; 7. Sealing ring; 8. Connecting rod; 9. Knob; 10. Through hole; 11. Ordinary nozzle; 12. Connecting pipe; 13. Clamping ring; 14. Connecting column; 15. Bolt; 16. Water supply pipe; 17. Pressurizing pipe; 18. Support plate; 19. Pressurizing nozzle; 20. Variable diameter nozzle. Detailed Implementation

[0018] 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.

[0019] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 4 An embodiment of this utility model provides: a high-efficiency plastic melting and uniform distribution nozzle device, including a nozzle 1, a conveying pipe 3 fixedly connected to the inner wall of the nozzle 1, a sealing shell 4 connected to the inner wall of the conveying pipe 3, an adjusting plate 5 rotatably connected to the inner wall of the sealing shell 4, a plurality of connecting grooves 6 opened on the inner wall of the adjusting plate 5, a sealing ring 7 fixedly connected to the outer wall of the adjusting plate 5, a connecting rod 8 fixedly connected to the outer wall of the adjusting plate 5, a knob 9 fixedly connected to the outer wall of the connecting rod 8, a plurality of through holes 10 opened on the inner wall of the sealing shell 4, a common nozzle 11 connected to the inner wall of the through holes 10, and a melting mechanism 2 fixedly connected to the outer wall of the nozzle 1, the melting mechanism 2 being used to fully melt the plastic raw material; Specifically, the molten plastic enters the conveying pipe 3 on the inner wall of the nozzle 1 for transportation, and is poured into the sealing shell 4. The adjusting plate 5, which is rotatably connected to the inner wall of the sealing shell 4, is used to switch between nozzles 1 of different diameters. The sealing ring 7 fixed on its outer wall prevents leakage of molten plastic and ensures the sealing of the transportation. By rotating the knob 9 connected to the connecting rod 8 on the outer wall of the adjusting plate 5, the adjusting plate 5 can be rotated, so that the multiple connecting grooves 6 on the inner wall of the adjusting plate 5 are connected to the multiple through holes 10 on the inner wall of the sealing shell 4. Different diameter nozzles 1 can be switched, thereby controlling the flow rate of molten plastic. Finally, the molten plastic enters the connected ordinary nozzle 11 through the through hole 10, and the ordinary nozzle 11 achieves uniform spraying to meet the injection molding needs in different scenarios. The melting mechanism 2 can fully heat and melt the input plastic raw material to ensure that the raw material is transformed into molten plastic with stable fluidity, laying the foundation for subsequent uniform transportation.

[0020] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 5 The melting mechanism 2 includes a threaded cylinder 201. The outer wall of the threaded cylinder 201 is fixedly connected to the outer wall of the nozzle 1. The inner wall of the threaded cylinder 201 is threadedly connected to a connecting end 202. The inner wall of the connecting end 202 is connected to a heating section 203. The outer wall of the heating section 203 is fixedly connected to a melting coil 204. The inner wall of the heating section 203 is connected to a feeding section 205. The outer wall of the feeding section 205 is fixedly connected to a preheating coil 206. The outer wall of the feeding section 205 is fixedly connected to a protective shell 207. Specifically, the threaded cylinder 201 is fixed to the nozzle 1 through its outer wall, providing a stable installation base for the entire melting mechanism 2. Its inner wall is threadedly connected to the connecting end 202, which facilitates component disassembly and maintenance. The plastic raw material first enters the feeding section 205. The preheating coil 206 on the outer wall of the feeding section 205 can preheat the raw material, reducing the energy consumption of subsequent melting. The preheated raw material enters the heating section 203 through the connecting structure between the feeding section 205 and the heating section 203. The melting coil 204 on the outer wall of the heating section 203 can quickly heat up and completely melt the raw material into a fluid and stable molten plastic. The protective shell 207 on the outer wall of the feeding section 205 can insulate the heat and prevent the operator from being burned.

[0021] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The outer wall of the nozzle 1 is fixedly connected to a connecting pipe 12, the outer wall of the connecting pipe 12 is slidably connected to a clamping ring 13, the inner wall of the connecting pipe 12 is fixedly connected to a water supply pipe 16, the inner wall of the water supply pipe 16 is connected to the inner wall of the nozzle 1, and the inner wall of the clamping ring 13 is slidably connected to multiple connecting posts 14, and the inner walls of the multiple connecting posts 14 are threaded with bolts 15. Specifically, the connecting pipe 12 on the outer wall of the nozzle 1 is connected to the clamp ring 13 through the outer wall, and together with the multiple connecting posts 14 that slide on the inner wall and the bolts 15 that are threaded in the posts, the connection between the connecting pipe 12 and the external structure can be strengthened and the stability improved. The water supply pipe 16 fixed on the inner wall is connected to the inner wall of the nozzle 1 and can deliver cleaning liquid to clean the residue of molten plastic on the inner wall and prevent the plastic from cooling and hardening, which would affect the working accuracy.

[0022] Please see the appendix Figure 1 and attached Figure 2 A pressurizing pipe 17 is fixedly connected to the inner wall of the connecting pipe 12. The inner wall of the pressurizing pipe 17 is connected to the inner wall of the nozzle 1. A pressurizing nozzle 19 is connected to the inner wall of multiple through holes 10. A variable diameter nozzle 20 is connected to the inner wall of multiple through holes 10. A support plate 18 is fixedly connected to the outer wall of the clamp ring 13. The outer wall of the support plate 18 is fixedly connected to the outer walls of the water supply pipe 16 and the pressurizing pipe 17, respectively. Specifically, the pressurizing pipe 17, which is fixed to the inner wall of the connecting pipe 12, is connected to the inner wall of the nozzle 1 and is used to transport high-pressure gas, clean the residual molten plastic on the inner wall and clean the remaining water, so as to avoid affecting the quality of the subsequent molten plastic. The support plate 18 on the outer wall of the clamp ring 13 is fixed to the outer wall of the water supply pipe 16 and the pressurizing pipe 17 respectively, which can strengthen the position of the two pipes, prevent them from shaking, and ensure the stability of the coolant delivery and pressurization function.

[0023] Working principle: Molten plastic is first directionally conveyed through the conveying pipe 3 on the inner wall of the nozzle 1, and stably introduced into the sealed shell 4. The adjusting plate 5, which is rotatably connected to the inner wall of the sealed shell 4, is used to switch nozzles 1, control the flow rate of molten plastic and the uniform spray thickness. The sealing ring 7 fixed on its outer wall is used to prevent molten plastic leakage to ensure the sealing of the conveying. The operator turns the knob 9 to control the rotation of the adjusting plate 5 through the connecting rod 8, so that the multiple connecting grooves 6 on the inner wall of the adjusting plate 5 are precisely aligned with the multiple through holes 10 on the inner wall of the sealed shell 4, thereby switching the spray path of different diameters. Finally, the molten plastic enters the connected ordinary nozzle 11 through the through hole 10, and the ordinary nozzle 11 achieves uniform spraying to meet the needs of different injection molding scenarios. The outer wall of the threaded cylinder 201 is fixed to the nozzle 1, providing a stable installation base. Its inner wall is threaded to the connecting end 202 for easy disassembly and maintenance. During operation, the plastic raw material first enters the feeding section 205. The preheating coil 206 on the outer wall of the feeding section 205 initially heats the raw material, reducing subsequent melting energy consumption. The preheated raw material enters the heating section 203 through the connecting structure between the feeding section 205 and the heating section 203. The melting coil 204 on the outer wall of the heating section 203 rapidly heats up, completely melting the raw material into a fluid and stable molten plastic. The protective shell 207 on the outer wall of the feeding section 205 insulates against heat, preventing burns to operators.

[0024] 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 high-efficiency nozzle device for uniformly distributing molten plastic, comprising a nozzle (1), characterized in that: The inner wall of the nozzle (1) is fixedly connected to a conveying pipe (3), the inner wall of the conveying pipe (3) is connected to a sealing shell (4), the inner wall of the sealing shell (4) is rotatably connected to an adjusting plate (5), the inner wall of the adjusting plate (5) is provided with multiple connecting grooves (6), the outer wall of the adjusting plate (5) is fixedly connected to a sealing ring (7), the outer wall of the adjusting plate (5) is fixedly connected to a connecting rod (8), the outer wall of the connecting rod (8) is fixedly connected to a knob (9), the inner wall of the sealing shell (4) is provided with multiple through holes (10), the inner wall of the through holes (10) is connected to a common nozzle (11), the outer wall of the nozzle (1) is fixedly connected to a melting mechanism (2), the melting mechanism (2) is used to fully melt the plastic raw material.

2. The high-efficiency molten plastic uniform distribution nozzle device according to claim 1, characterized in that: The melting mechanism (2) includes a threaded cylinder (201), the outer wall of which is fixedly connected to the outer wall of the nozzle (1), the inner wall of which is threadedly connected to a connecting end (202), the inner wall of which is connected to a heating section (203), the outer wall of which is fixedly connected to a melting coil (204), the inner wall of which is connected to a feeding section (205), the outer wall of which is fixedly connected to a preheating coil (206), and the outer wall of which is fixedly connected to a protective shell (207).

3. The high-efficiency molten plastic uniform distribution nozzle device according to claim 1, characterized in that: The outer wall of the nozzle (1) is fixedly connected to a connecting pipe (12), and the outer wall of the connecting pipe (12) is slidably connected to a clamping ring (13).

4. The high-efficiency molten plastic uniform distribution nozzle device according to claim 3, characterized in that: The inner wall of the clamp ring (13) is slidably connected with multiple connecting posts (14), and the inner walls of the multiple connecting posts (14) are threaded with bolts (15).

5. The high-efficiency molten plastic uniform distribution nozzle device according to claim 3, characterized in that: The inner wall of the connecting pipe (12) is fixedly connected to a water supply pipe (16), and the inner wall of the water supply pipe (16) is connected to the inner wall of the nozzle (1).

6. The high-efficiency molten plastic uniform distribution nozzle device according to claim 3, characterized in that: The inner wall of the connecting pipe (12) is fixedly connected to a pressurizing pipe (17), and the inner wall of the pressurizing pipe (17) is connected to the inner wall of the nozzle (1).

7. The high-efficiency molten plastic uniform distribution nozzle device according to claim 3, characterized in that: The outer wall of the clamp ring (13) is fixedly connected to a support plate (18), and the outer wall of the support plate (18) is fixedly connected to the outer wall of the water supply pipe (16) and the pressurization pipe (17).

8. The high-efficiency molten plastic uniform distribution nozzle device according to claim 1, characterized in that: The inner walls of the plurality of through holes (10) are connected to pressurized nozzles (19), and the inner walls of the plurality of through holes (10) are connected to variable diameter nozzles (20).

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