Integrally-formed hot nozzle head

Abstract

The utility model relates to the technical field of hot runners, in particular to an integrally-formed hot nozzle head which comprises a nozzle body and a mold body, a nozzle core is arranged at the bottom of the nozzle body, the nozzle core and the nozzle body are integrally formed, the nozzle core is arranged in the mold body in a sliding mode, a material injection cavity is formed in the nozzle body, a material conveying cavity is formed in the nozzle core, and the material conveying cavity is arranged in the mold body. And the material injection cavity is communicated with the material conveying cavity. The device shows excellent sealing and opening performance in the injection molding process, at the beginning, the plugging plates are tightly connected to prevent raw material leakage, the nozzle core is inserted to drive the rotating wheel to rotate, the pull rope is wound to separate the plugging plates, the conveying cavity is opened, operation is simplified, efficiency is improved, and after injection molding is completed, the nozzle body moves upwards to enable the rotating wheel to rotate reversely, and the pull rope is released, so that the raw material is prevented from leaking. The reset spring drives the blocking plate to reset quickly, raw materials are prevented from dripping, the environment is kept clean, meanwhile, the overall structure is compact and stable, components are tightly matched, connecting points are reduced, the failure rate is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hot runner technology, specifically to an integrally formed hot nozzle. Background Technology

[0002] A hot runner nozzle, also known as a hot runner nozzle or hot nozzle, is a key component in injection molds. It is located between the nozzle of the injection molding machine and the mold cavity and is responsible for injecting molten plastic material into the mold cavity at a certain pressure and speed to produce plastic products.

[0003] Most hot runners currently in use are assembled from multiple parts, which are relatively complex in structure and have high requirements for sealing between the parts. They are also more troublesome to use. Furthermore, when the hot runner is removed from the mold after injection molding, the residual material inside the hot runner can easily drip everywhere, which can easily lead to material waste and environmental pollution. Utility Model Content

[0004] The purpose of this invention is to provide an integrally formed hot nozzle to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An integrally formed hot nozzle includes a nozzle body and a mold body. A nozzle core is provided at the bottom of the nozzle body and is integrally formed with the nozzle body. The nozzle core is slidably disposed in the mold body. An injection cavity is provided in the nozzle body and a conveying cavity is provided in the nozzle core. The injection cavity and the conveying cavity are connected.

[0007] The nozzle core is also equipped with two sets of sealing components for sealing the conveying chamber.

[0008] Preferably, the sealing assembly includes a rotating wheel, and the nozzle core has two rotating grooves. The rotating wheel is rotatably connected to the adjacent rotating grooves, and the arc surface of the rotating wheel is in contact with the inner wall of the mold body. A pull rope is wound on the rotating wheel, and the end of the pull rope away from the rotating wheel extends into the interior of the nozzle core.

[0009] Preferably, the nozzle core is further provided with a sliding groove, and the sliding groove is connected to the material conveying chamber, and the pull rope passes through the inner wall of the nozzle core and extends into the sliding groove.

[0010] Preferably, the sealing assembly further includes a sliding plate, which is slidably connected in a sliding groove. A sealing plate is installed on the side of the sliding plate near the material conveying chamber, and a connecting block is fixedly connected to the side of the sliding plate away from the sealing plate. The connecting block is fixed to an adjacent pull rope.

[0011] Preferably, two return springs are also installed on the side of the sliding plate near the feeding chamber. One end of the two return springs is fixed to the sliding plate, and the other end is fixed to the inner wall of the nozzle core.

[0012] Preferably, two return springs are also installed on the side of the sliding plate near the feeding chamber. One end of the two return springs is fixed to the sliding plate, and the other end is fixed to the inner wall of the nozzle core.

[0013] Preferably, the top of the mouthpiece is also equipped with a mounting plate, and the mounting plate has multiple mounting holes.

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

[0015] 1. This utility model has excellent sealing and opening functions during the injection molding process. In the initial state, the two sealing plates close the material conveying cavity by abutting each other, which effectively prevents the leakage of injection molding material in the non-injection state. When the nozzle core is inserted into the connecting cavity, the rotation of the rotating wheel in the rotating groove drives the winding of the pull rope, thereby separating the sealing plates, opening the material conveying cavity, and allowing the material to enter smoothly. This design greatly simplifies the operation process, improves work efficiency, and reduces material waste.

[0016] 2. After injection molding is completed, the nozzle moves up and drives the rotating wheel on the nozzle core to rotate in the opposite direction. The pull rope turns out from the rotating wheel, the reset spring rebounds and resets, and drives the sliding plate and sealing plate to re-close the material conveying chamber. This process is not only fast and accurate, but also effectively avoids the dripping of residual raw materials in the material conveying chamber and keeps the working environment clean.

[0017] 3. The overall structure of this utility model is compact and stable, and the cooperation between various components is close and coordinated, which ensures its stability and durability during long-term use. At the same time, its integrated design also reduces the connection points between components, reduces the failure rate, and improves the overall service life. Attached Figure Description

[0018] Figure 1 This is a first-view schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the nozzle core in this utility model;

[0020] Figure 3 This is a schematic diagram of the sealing component in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model in use.

[0022] In the diagram: 1. Nozzle body; 11. Nozzle core; 12. Injection cavity; 13. Material conveying cavity; 14. Rotating groove; 15. Sliding groove; 16. Mounting plate; 17. Mounting hole; 2. Sealing assembly; 21. Rotating wheel; 22. Pull rope; 23. Connecting block; 24. Sliding plate; 25. Sealing plate; 26. Return spring; 3. Mold body; 31. Connecting cavity; 32. Injection port. Detailed Implementation

[0023] 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.

[0024] Example 1, please refer to Figure 1-4 An integrally formed hot nozzle includes a nozzle body 1 and a mold body 3. A nozzle core 11 is provided at the bottom of the nozzle body 1 and is integrally formed with the nozzle body 1. The nozzle core 11 is slidably disposed in the mold body 3. An injection cavity 12 is provided in the nozzle body 1 and a conveying cavity 13 is provided in the nozzle core 11. The injection cavity 12 and the conveying cavity 13 are connected. Two sets of sealing components 2 for sealing the conveying cavity 13 are also provided in the nozzle core 11. A connecting cavity 31 is provided in the mold body 3. The nozzle core 11 is slidably disposed in the connecting cavity 31. An injection port 32 is provided at the bottom of the connecting cavity 31 and is connected to the conveying cavity 13. An mounting plate 16 is also installed on the top of the nozzle body 1. Multiple mounting holes 17 are provided on the mounting plate 16.

[0025] In use, the nozzle body 1 is first connected to the material feeding end through the mounting plate 16 and mounting hole 17. When performing injection molding, the nozzle core 11 is first aligned with the connecting cavity 31 on the mold body 3, and the nozzle body 1 is moved down so that the nozzle core 11 is inserted into the connecting cavity 31. The material feeding cavity 13 in the nozzle core 11 is connected to the injection port 32 on the connecting cavity 31, so that the injection material enters the nozzle body 1 through the injection cavity 12 and flows downward through the material feeding cavity 13 into the injection port 32 and is injected into the mold to complete the injection molding work.

[0026] When the nozzle body 1 moves down, the sealing component 2 on the nozzle core 11 comes into contact with the side wall of the connecting cavity 31. Under the action of the side wall of the connecting cavity 31, the sealing component 2 is opened, so that the material conveying cavity 13 is connected to the injection port 32, allowing the raw material to fall smoothly.

[0027] After injection molding is completed, the nozzle body 1 is moved upward so that the nozzle core 11 is removed from the connecting cavity 31. At this time, the sealing component 2 is adjusted again under the action of the inner wall of the connecting cavity 31 to seal the material conveying cavity 13 and prevent the material left in the material conveying cavity 13 from dripping everywhere.

[0028] In this embodiment, the sealing assembly 2 includes a rotating wheel 21. Two rotating grooves 14 are formed on the nozzle core 11. The rotating wheel 21 is rotatably connected to adjacent rotating grooves 14, and the arc surface of the rotating wheel 21 contacts the inner wall of the mold body 3. A pull rope 22 is wound around the rotating wheel 21, with one end of the pull rope 22 extending into the interior of the nozzle core 11 away from the rotating wheel 21. A sliding groove 15 is also formed in the nozzle core 11, and the sliding groove 15 communicates with the material conveying chamber 13. The pull rope 22 passes through the inner wall of the nozzle core 11 and extends into the sliding groove 14. In part 5, the sealing assembly 2 also includes a sliding plate 24, which is slidably connected in the sliding groove 15. A sealing plate 25 is installed on the side of the sliding plate 24 near the material conveying chamber 13, and a connecting block 23 is fixedly connected on the side of the sliding plate 24 away from the sealing plate 25. The connecting block 23 is fixed to the adjacent pull rope 22. Two return springs 26 are also installed on the side of the sliding plate 24 near the material conveying chamber 13. One end of the two return springs 26 is fixed to the sliding plate 24, and the other end is fixed to the inner wall of the nozzle core 11.

[0029] In the initial state, the two sealing plates 25 extend out of the sliding groove 15 and into the material conveying chamber 13. The sides of the two sealing plates 25 that are close to each other abut against each other to close the material conveying chamber 13. When the nozzle body 1 moves down and the nozzle core 11 is inserted into the connecting chamber 31, the two rotating wheels 21 on the side wall of the nozzle core 11 rotate in the rotating groove 14 under the limit of the inner wall of the connecting chamber 31. When the rotating wheels 21 rotate, the pull rope 22 is pulled at the same time, so that the pull rope 22 is wrapped around the rotating wheel 21. Under the pull of the pull rope 22, the connecting block 23 drives the sliding plate 24 to slide away from the material conveying chamber 13. The two sliding plates 24 move at the same time, so that the two sealing plates 25 separate and move from the material conveying chamber 13 into the sliding groove 15, no longer closing the material conveying chamber 13. At this time, the raw material can fall into the injection port 32 through the material conveying chamber 13.

[0030] When the two sliding plates 24 slide away from the material conveying chamber 13, they simultaneously cause the return spring 26 to stretch and store force.

[0031] After the injection molding process is completed, the nozzle body 1 drives the nozzle core 11 to move upward. At this time, the rotating wheel 21 rotates in the opposite direction under the action of the inner wall of the connecting cavity 31, causing the pull rope 22 to rotate out of the rotating wheel 21 and no longer tighten. The return spring 26 returns to its original position, driving the sliding plate 24 and the sealing plate 25 to move towards the material conveying cavity 13. This causes the sealing plate 25 to move out of the sliding groove 15 and move back into the material conveying cavity 13, so that the two sealing plates 25 seal the material conveying cavity 13, preventing the residual material in the material conveying cavity 13 from dripping everywhere.

[0032] Working principle: When in use, the nozzle body 1 is first connected to the feeding end through the mounting plate 16 and mounting hole 17. When injection molding, the nozzle core 11 is first aligned with the connecting cavity 31 on the mold body 3, and the nozzle body 1 is moved down so that the nozzle core 11 is inserted into the connecting cavity 31.

[0033] In the initial state, the two sealing plates 25 extend out of the sliding groove 15 and into the material conveying chamber 13. The two sealing plates 25 abut against each other to close the material conveying chamber 13. When the nozzle core 11 is inserted into the connecting chamber 31, the two rotating wheels 21 on the side wall of the nozzle core 11 rotate in the rotating groove 14. When the rotating wheels 21 rotate, they pull the pull rope 22, causing the pull rope 22 to wrap around the rotating wheel 21. Under the pull of the pull rope 22, the connecting block 23 drives the sliding plate 24 to slide away from the material conveying chamber 13, and at the same time drives the return spring 26 to stretch and store force. When the sliding plate 24 moves, it simultaneously drives the two sealing plates 25 to separate, so that the two sealing plates 25 move from the material conveying chamber 13 into the sliding groove 15, no longer closing the material conveying chamber 13. The injection molding material enters the nozzle body 1 through the injection chamber 12 and flows downward through the material conveying chamber 13 into the injection port 32 and is injected into the mold to complete the injection molding work.

[0034] After the injection molding process is completed, the nozzle body 1 drives the nozzle core 11 to move upward. At this time, the rotating wheel 21 rotates in the opposite direction under the action of the inner wall of the connecting cavity 31, causing the pull rope 22 to rotate out of the rotating wheel 21 and no longer tighten. The return spring 26 returns to its original position, driving the sliding plate 24 and the sealing plate 25 to move towards the material conveying cavity 13. This causes the sealing plate 25 to move out of the sliding groove 15 and move back into the material conveying cavity 13, so that the two sealing plates 25 seal the material conveying cavity 13 and prevent the raw materials left in the material conveying cavity 13 from dripping everywhere.

[0035] It should be noted that all the devices in this application are common devices on the market, and can be selected according to the needs of specific use. The circuit connection relationship of each device is a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can easily implement it. It belongs to the prior art and will not be described in detail.

[0036] 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. An integrally formed hot nozzle tip comprising a nozzle body (1) and a die body (3), characterized in that: The bottom of the mouth body (1) is provided with a mouth core (11), and the mouth core (11) is integrally formed with the mouth body (1), the mouth core (11) is slidably arranged in the mold body (3), the mouth body (1) is provided with an injection cavity (12), the mouth core (11) is provided with a feeding cavity (13), and the injection cavity (12) and the feeding cavity (13) are in communication. The mouth core (11) is also provided with two groups of sealing assemblies (2) for sealing the feeding cavity (13).

2. A one-piece hot tip as defined in claim 1, wherein: The sealing assembly (2) comprises a rotating wheel (21), two rotating grooves (14) are formed in the mouth core (11), the rotating wheel (21) is rotatably connected in the adjacent rotating groove (14), and the arc surface of the rotating wheel (21) is in contact with the inner wall of the mold body (3), the rotating wheel (21) is wound with a pull rope (22), and one end of the pull rope (22) away from the rotating wheel (21) extends to the inside of the mouth core (11).

3. A one-piece hot tip as defined in claim 2, wherein: The mouth core (11) is also provided with a sliding groove (15), and the sliding groove (15) is in communication with the feeding cavity (13), and the pull rope (22) penetrates the inner wall of the mouth core (11) and extends into the sliding groove (15).

4. The integrally formed hot tip of claim 1 wherein: The sealing assembly (2) further comprises a sliding plate (24), the sliding plate (24) is slidably connected in the sliding groove (15), the side of the sliding plate (24) close to the feeding cavity (13) is provided with a sealing plate (25), and the side of the sliding plate (24) away from the sealing plate (25) is fixedly connected with a connecting block (23), and the connecting block (23) is fixed with the adjacent pull rope (22).

5. A one-piece hot tip as defined in claim 4, wherein: The side of the sliding plate (24) close to the feeding cavity (13) is also provided with two reset springs (26), one end of the two reset springs (26) is fixed with the sliding plate (24), and the other end is fixed in the inner wall of the mouth core (11).

6. The integrally formed hot tip of claim 1 wherein: The mold body (3) is provided with a connecting cavity (31), the mouth core (11) is slidably arranged in the connecting cavity (31), and the bottom of the connecting cavity (31) is provided with an injection port (32), the injection port (32) is in communication with the feeding cavity (13).

7. The integrally formed hot tip of claim 1 wherein: The top of the mouth body (1) is also provided with a mounting plate (16), and the mounting plate (16) is provided with a plurality of mounting holes (17).

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