A nozzle with anti-blocking function

Abstract

The utility model discloses a kind of nozzle with anti-blocking function, including nozzle shell, installation pipe and injection connection pipe, the top of inside installation pipe is equipped with metal heat pipe, and the outside of metal heat pipe is equipped with electric heating wire, the inside installation pipe is equipped with nozzle shell, the outside of nozzle shell is equipped with installation round plate, and both ends of installation round plate top are provided with fixed screw hole.The utility model is equipped with positioning inner tube and sealing flow guide pipe, when using, sealing flow guide pipe is inserted into injection connection pipe inside, so that sealing flow guide pipe and positioning inner tube are closely attached, the gap at the connecting position of nozzle shell and installation pipe can be blocked by sealing flow guide pipe, the leakage of thermoplastic raw material through the gap at the connecting position of nozzle shell and installation pipe can be avoided, which is conducive to improving the sealing property, and the overall thickness of nozzle shell can also be improved by sealing flow guide pipe, to avoid nozzle shell being damaged by fluid.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, specifically to a nozzle with anti-clogging function. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection machines, are the main molding equipment that uses plastic molds to make plastic products of various shapes from thermoplastic or thermosetting plastics. The nozzle is one of the main accessories of the injection molding machine. The injection molding machine sprays out thermoplastic through the nozzle and performs the injection process.

[0003] The utility model patent with announcement number CN208841711U discloses an injection nozzle for an injection molding machine with anti-clogging function. The patent has a heating chamber, a heating wire and a plug needle. The heating wire is spirally distributed inside the heating chamber, which can uniformly heat the raw material inside the nozzle shell, increase the fluidity of the raw material and prevent the raw material from cooling too quickly.

[0004] However, in the implementation of this patent, the heating chamber and heating wire are all located inside the nozzle housing. When the nozzle housing needs to be disassembled for inspection and replacement, the heating wire and other parts need to be disassembled as well, making the maintenance of the nozzle inconvenient. Furthermore, the heating chamber inside the nozzle housing greatly reduces the structural strength of the nozzle, resulting in greater fluid impact force and making the nozzle prone to damage. Therefore, this utility model provides a nozzle with anti-clogging function to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a nozzle with anti-clogging function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a nozzle with anti-clogging function, comprising a nozzle housing, an installation tube and an injection molding connecting tube, wherein a metal heat-conducting tube is installed at the top inside the installation tube, and an electric heating wire is wound around the outside of the metal heat-conducting tube; the nozzle housing is installed inside the installation tube; an installation circular plate is installed on the outside of the nozzle housing, and fixing screw holes are provided at both ends of the top of the installation circular plate.

[0007] Preferably, mounting nuts are installed at the top of both ends of the injection-molded connecting pipe.

[0008] Preferably, a positioning inner tube is installed on the inner side of the injection-molded connecting tube.

[0009] Preferably, a sealing guide tube is installed on the inner side of the nozzle housing.

[0010] Preferably, an externally threaded pipe is installed on the top of the mounting disc.

[0011] Preferably, the bottom of the mounting tube is provided with an internal threaded hole.

[0012] Preferably, a fixing nut is installed at the bottom of both ends of the mounting tube, and a fixing bolt is threaded inside the fixing nut.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The nozzle with anti-clogging function is equipped with an installation tube, a metal heat-conducting tube and an electric heating wire. During use, the electric heating wire can heat different positions of the metal heat-conducting tube, so that the heat is evenly transferred to the nozzle housing through the metal heat-conducting tube, avoiding the cooling of the thermoplastic material, increasing the fluidity of the thermoplastic material, and thus preventing the thermoplastic from clogging the inside of the nozzle housing.

[0015] 2. The nozzle with anti-clogging function is equipped with a positioning inner tube and a sealing guide tube. When in use, the sealing guide tube is inserted into the injection molding connecting tube, so that the sealing guide tube and the positioning inner tube fit tightly. The sealing guide tube can block the gap at the connection between the nozzle housing and the mounting tube, which can prevent thermoplastic material from leaking out through the gap at the connection between the nozzle housing and the mounting tube, thus improving the sealing performance. The sealing guide tube can also increase the overall thickness of the nozzle housing, preventing the nozzle housing from being damaged by the fluid.

[0016] 3. The nozzle with anti-clogging function is equipped with a fixing nut, fixing bolt, and external threaded tube. During installation, insert the external threaded tube into the internal threaded hole, and then rotate the external threaded tube to fix the nozzle housing inside the mounting tube. Then, screw the fixing bolt into the fixing nut and fixing bolt hole at the same time to reinforce the nozzle housing and mounting tube. After use, remove the external threaded tube from the internal threaded hole, and the nozzle housing can be directly removed from the mounting tube without having to remove the mounting tube and heating wire as a whole, which facilitates the inspection and replacement of the nozzle housing. Attached Figure Description

[0017] Figure 1 This is a schematic front sectional view of the present invention;

[0018] Figure 2 This is a schematic front sectional view of the injection-molded connecting pipe of this utility model;

[0019] Figure 3 This is a top view of the injection-molded connecting pipe of this utility model;

[0020] Figure 4 This is a schematic front sectional view of the mounting pipe of this utility model;

[0021] Figure 5 This is a bottom view of the mounting pipe of this utility model;

[0022] Figure 6 This is a schematic front sectional view of the nozzle housing of this utility model;

[0023] Figure 7 This is a top view of the nozzle housing of this utility model.

[0024] In the diagram: 1. Nozzle housing; 2. Mounting plate; 3. Fixing nut; 4. Fixing bolt; 5. External threaded tube; 6. Mounting tube; 7. Metal heat-conducting tube; 8. Injection molding connecting tube; 9. Mounting nut; 10. Positioning inner tube; 11. Electric heating wire; 12. Internal threaded hole; 13. Sealing guide tube; 14. Fixing screw hole. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-7 An embodiment of this utility model provides: a nozzle with anti-clogging function, including a nozzle housing 1, an installation tube 6 and an injection molding connecting tube 8. A metal heat-conducting tube 7 is installed at the top inside the installation tube 6, and an electric heating wire 11 is wound around the outside of the metal heat-conducting tube 7. The nozzle housing 1 is installed inside the installation tube 6, and an installation circular plate 2 is installed on the outside of the nozzle housing 1. Fixing screw holes 14 are provided at both ends of the top of the installation circular plate 2. Installation nuts 9 are installed at the top of both ends of the injection molding connecting tube 8, and the injection molding connecting tube 8 can be connected and fixed to the injection molding machine pipeline by means of the installation nuts 9.

[0027] like Figure 1-7 As shown, a positioning inner tube 10 is installed inside the injection molding connecting tube 8, and a sealing guide tube 13 is installed inside the nozzle housing 1. In use, the sealing guide tube 13 is inserted into the injection molding connecting tube 8, so that the sealing guide tube 13 and the positioning inner tube 10 fit tightly together. The sealing guide tube 13 can block the gap at the connection position between the nozzle housing 1 and the mounting tube 6, which can prevent thermoplastic material from leaking out through the gap at the connection position between the nozzle housing 1 and the mounting tube 6, which is beneficial to improving the sealing performance. The sealing guide tube 13 can also increase the overall thickness of the nozzle housing 1, preventing the nozzle housing 1 from being damaged by the fluid.

[0028] like Figure 1-7 As shown, an external threaded tube 5 is installed on the top of the mounting plate 2, and an internal threaded hole 12 is provided at the bottom of the mounting tube 6. During installation, the external threaded tube 5 is inserted into the internal threaded hole 12, and then the external threaded tube 5 is rotated to fix the nozzle housing 1 inside the mounting tube 6.

[0029] like Figure 1-5 As shown, a fixing nut 3 is installed at the bottom of both ends of the mounting tube 6, and a fixing bolt 4 is threaded inside the fixing nut 3. The fixing bolt 4 is screwed into the fixing nut 3 and the fixing screw hole 14 at the same time to reinforce the nozzle housing 1 and the mounting tube 6.

[0030] Working principle:

[0031] During installation, first connect and fix the injection connection pipe 8 to the injection molding machine pipe by installing nut 9. Then insert nozzle housing 1 into the installation pipe 6 so that the external threaded pipe 5 is simultaneously inserted into the internal threaded hole 12. Then the operator can rotate the external threaded pipe 5 clockwise so that the external threaded pipe 5 is screwed into the internal threaded hole 12 through the thread.

[0032] When the mounting plate 2 and the mounting tube 6 are tightly fitted together, the external threaded tube 5 is fully screwed into the internal threaded hole 12. At this time, the sealing guide tube 13 is tightly fitted with the positioning inner tube 10, and the metal heat conduction tube 7 is fitted with the outer side of the nozzle housing 1, thus completing the installation process.

[0033] The operator can simultaneously tighten two sets of fixing bolts 4, and simultaneously screw the fixing bolts 4 into the fixing nut 3 and the fixing screw hole 14. The fixing bolts 4 can be used to reinforce the nozzle housing 1 and securely install it inside the installation tube 6.

[0034] During use, the injection molding machine injects thermoplastic material into the injection connection tube 8, so that the thermoplastic enters the nozzle housing 1 through the positioning inner tube 10, and the thermoplastic fluid can be guided through the sealing guide tube 13, so that the thermoplastic is sprayed out through the nozzle housing 1.

[0035] During the injection molding process, the device can be powered on, so that the electric heating wire 11 is energized and heated. The electric heating wire 11 heats different positions of the metal heat conduction pipe 7, so that the heat is evenly transferred to the nozzle housing 1 through the metal heat conduction pipe 7, which prevents the thermoplastic material from cooling down, increases the fluidity of the thermoplastic material, and thus prevents the thermoplastic material from clogging the inside of the nozzle housing 1.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A nozzle with anti-clogging function, comprising a nozzle housing (1), a mounting tube (6), and an injection molding connecting tube (8), characterized in that: A metal heat-conducting pipe (7) is installed at the top inside the mounting tube (6), and an electric heating wire (11) is wound around the outside of the metal heat-conducting pipe (7). A nozzle housing (1) is installed inside the mounting tube (6), and a mounting circular plate (2) is installed on the outside of the nozzle housing (1). Fixing screw holes (14) are provided at both ends of the top of the mounting circular plate (2).

2. The nozzle with anti-clogging function according to claim 1, characterized in that: The top of both ends of the injection-molded connecting pipe (8) is fitted with mounting nuts (9).

3. The nozzle with anti-clogging function according to claim 1, characterized in that: The inner side of the injection molding connecting pipe (8) is equipped with a positioning inner pipe (10).

4. The nozzle with anti-clogging function according to claim 1, characterized in that: A sealing guide tube (13) is installed on the inner side of the nozzle housing (1).

5. A nozzle with anti-clogging function according to claim 1, characterized in that: The top of the mounting plate (2) is fitted with an externally threaded pipe (5).

6. A nozzle with anti-clogging function according to claim 1, characterized in that: The bottom of the mounting tube (6) is provided with an internal threaded hole (12).

7. A nozzle with anti-clogging function according to claim 1, characterized in that: The bottom of both ends of the mounting tube (6) is equipped with fixing nuts (3), and fixing bolts (4) are threaded inside the fixing nuts (3).

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