Nozzle for injection molding machine with anti-clogging function

Abstract

The invention discloses a nozzle for an injection molding machine with an anti-clogging function, which belongs to the technical field of injection molding machines. Compared with the prior art, the adhered injection molding liquid generates a cold and hot expansion stress effect under the action of cooling of a cooling pipeline and heating of a flushing liquid, and cracks are easily generated at the solidified contact between the injection molding liquid and the inner wall of an inner tube of a nozzle, so that it is convenient for the subsequent flushing liquid to flush the semi-solidified injection molding liquid from the cracks. The flushing liquid sprayed outward from the annular cleaning part is caused to generate a vortex through the forward and reverse rotation of an annular cleaning part, which not only enhances its own impact effect, but also can fully contact with the inner wall of the inner tube of the nozzle. The direction of the water flow sprayed from the separation flushing hole forms an acute angle with the inner wall of the inner tube of the nozzle. The water flow is easy to flush the crack where the injection molding liquid is connected to the inner tube of the nozzle, so that the adhered injection molding liquid is separated from the inner wall, and the adhesion of the injection molding liquid is effectively prevented. When the vibration part rotates, the inner tube of the nozzle is driven to vibrate, and further a vibration separation effect is played on the adhered injection molding liquid.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, in particular to a nozzle for an injection molding machine with an anti-clogging function. Background Art

[0002] Injection molding is a method in which thermoplastic or thermosetting molding materials are first plasticized uniformly in a heated barrel and then pushed into the mold cavity of a closed mold by a plunger or a moving screw. In recent years, injection molding has also been successfully used to mold certain thermosetting plastics. Injection molding has a short molding cycle and the mass of the molded product can range from a few grams to tens of kilograms. It can mold molded products with complex shapes, precise dimensions, and metal or non-metal inserts in one go.

[0003] During the operation of the injection molding machine, the injection liquid in a molten state needs to be heated, and then squeezed through a transport screw rod and sprayed into the mold from a nozzle.

[0004] In the prior art, after the injection molding operation is completed, some molten injection molding liquid is likely to remain in the nozzle, and the injection molding liquid solidifies due to cooling, causing the nozzle opening to be easily blocked, affecting the subsequent normal injection molding process. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a nozzle for an injection molding machine with an anti-clogging function. Compared with the prior art, the adhered injection molding liquid generates a cold and hot expansion stress effect under the action of cooling by the cooling pipeline and heating by the flushing liquid. Cracks are easily generated at the solidified contact between the injection molding liquid and the inner wall of the inner tube of the nozzle, so that it is convenient for the subsequent flushing liquid to flush the semi-solidified injection molding liquid from the cracks. The flushing liquid sprayed outward from the annular cleaning part rotates forward and backward, so that a vortex is generated, which not only enhances its own impact effect, but also can fully contact with the inner wall of the inner tube of the nozzle, and has a good cleaning effect. The direction of the water flow sprayed from the separation flushing hole is an acute angle with the inner wall of the inner tube of the nozzle. The water flow is easy to flush the crack where the injection molding liquid is connected to the inner tube of the nozzle, so that the adhered injection molding liquid is separated from the inner wall, and the adhesion of the injection molding liquid is effectively prevented. When the vibration part rotates, its center of gravity is unstable under the action of the eccentric block, and then the annular cleaning part will drive the inner tube of the nozzle to vibrate, further playing a vibration separation role on the adhered injection molding liquid.

[0007] Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A nozzle for an injection molding machine with an anti-clogging function comprises a nozzle outer tube, a nozzle inner tube is fixedly connected to the inside of the nozzle outer tube, a feed pipe opening and a sewage pipe opening are respectively connected to the surface of the nozzle outer tube, and the sewage pipe opening is located at the bottom of the nozzle outer tube, a cooling pipeline is also wound around the surface of the nozzle outer tube, the end of the nozzle outer tube is threadedly connected to a protective tube, an electric push rod is installed inside the protective tube, a motor is fixedly installed at the output end of the electric push rod, a control rod is transmission-connected to the output end of the motor, and an end of the control rod away from the motor extends into the nozzle inner tube and is rotatably connected to the nozzle inner tube, an annular cleaning part fixedly connected to the control rod is installed inside the nozzle inner tube; the end surface of the annular cleaning part away from the control rod is attached with a vibrating part, and the outer periphery of the vibrating part is provided with a An eccentric block, a groove for accommodating the vibration part is carved on the outer surface of the annular cleaning part, and two symmetrical separation flushing holes are arranged on the inner wall of the groove, an inner rod is fixedly connected to the end face of the vibration part facing the groove, a slot for accommodating the radial movement of the inner rod is arranged in the control rod, a compression spring is fixedly connected between the inner rod and the inner wall of the slot, and an electromagnet for magnetically adsorbing the inner rod is fixedly connected to the bottom end of the slot; a heating chamber is arranged inside the end of the protective tube away from the outer tube of the nozzle, the water outlet of the heating chamber is connected with the separation flushing hole through a pipeline, an air inlet of the heating chamber is fixedly connected with an air inlet pipe, and a valve is installed inside the air inlet pipe, a water pipe opening connected with the heating chamber is fixed on the outer surface of the protective tube, and solenoid valves are installed inside the water pipe opening, the feed pipe opening and the sewage pipe opening.

[0010] Furthermore, the inner wall of the nozzle outer tube and the outer wall of the nozzle inner tube do not contact each other, and a buffer cavity is formed between the two.

[0011] Furthermore, a plurality of elastic buffer sheets are provided in the buffer cavity, and one end of the elastic buffer sheet is fixedly connected to the inner wall of the buffer cavity, and one end of the elastic buffer sheet away from the buffer cavity is fixedly connected to an airbag, and the airbag does not contact the inner wall of the buffer cavity.

[0012] Furthermore, the buffer cavity is filled with a buffer solution, and magnetic particles are added to the buffer solution.

[0013] Furthermore, a neodymium iron boron magnet is embedded in the end of the eccentric block facing the inner wall of the nozzle inner tube, and a gap is left between the eccentric block and the inner wall of the nozzle inner tube.

[0014] Furthermore, the inner tube of the nozzle is made of beryllium copper alloy material, and the inner wall of the inner tube of the nozzle is smooth.

[0015] Furthermore, the depth of the groove is consistent with the height of the vibration part, and when the vibration part is in contact with the groove, the outer surface of the annular cleaning part is in a smooth state.

[0016] Furthermore, the annular cleaning part and the vibration part are both made of metal material, and the diameter of the vibration part is half of the annular cleaning part.

[0017] Furthermore, the outer diameter of the annular cleaning portion is equal to the inner diameter of the nozzle inner tube, and the annular cleaning portion and the nozzle inner tube are concentric.

[0018] Furthermore, a plurality of heat dissipation holes are formed through the surface of the protection tube, and an angle between the separation flushing hole and the inner wall of the nozzle inner tube is an acute angle.

[0019] Beneficial Effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) Compared with the prior art, the present invention generates thermal expansion stress effects on the adhered injection molding liquid under the effects of cooling by the cooling pipeline and heating by the flushing liquid. Cracks are easily generated at the solidified contact point between the injection molding liquid and the inner wall of the nozzle inner tube, thereby facilitating the subsequent flushing liquid to flush the semi-solidified injection molding liquid from the cracks. The flushing liquid sprayed outward from the annular cleaning part generates a swirl flow through the forward and reverse rotation of the annular cleaning part, which not only enhances its own impact effect, but also can fully contact with the inner wall of the nozzle inner tube, resulting in a good cleaning effect. The direction of the water flow sprayed from the separation flushing hole is an acute angle with the inner wall of the nozzle inner tube, and the water flow easily flushes the cracks connecting the injection molding liquid and the nozzle inner tube, thereby separating the adhered injection molding liquid from the inner wall and effectively preventing the adhesion of the injection molding liquid. When the vibration part rotates, its center of gravity is unstable under the action of the eccentric block, and then the annular cleaning part drives the nozzle inner tube to vibrate, further playing a vibration separation role on the adhered injection molding liquid.

[0022] (2) After the adhered injection molding liquid is flushed away, the air inlet can be connected to an external air pump to transport the heated gas into the inner tube of the nozzle, thereby quickly drying the inner tube of the nozzle and facilitating subsequent use.

[0023] (3) The annular cleaning part and the vibration part are affected by the heat transfer of the flushing liquid, and their own temperature will increase, which effectively prevents the injection liquid from solidifying and facilitates the injection liquid to be thrown out under the dual forces of centrifugation and vibration.

[0024] (4) The airbag and buffer can further absorb the vibration energy of the inner tube of the nozzle, reducing the impact of the vibration on the outer tube of the nozzle.

[0025] (5) When the eccentric block rotates, it will drive the embedded NdFeB magnet to rotate. When the NdFeB magnet rotates, it will attract the magnetic particles through its own magnetic force. The magnetic particles will stir the buffer solution, and the temperature of the buffer solution itself will quickly tend to be consistent, and the overall cooling effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the explosion three-dimensional structure of the present invention;

[0027] Figure 2It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 3 It is a schematic diagram of a cutaway three-dimensional structure of the present invention;

[0029] Figure 4 It is a front cross-sectional structural schematic diagram of the present invention;

[0030] Figure 5 It is a schematic diagram of the side structure of the vibration part of the present invention;

[0031] Figure 6 It is a schematic diagram of the working structure of the annular cleaning part of the present invention;

[0032] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of the middle part A;

[0033] Figure 8 It is a schematic diagram of the overall front view structure of the present invention;

[0034] Fig. 9 It is a schematic diagram of a partially enlarged structure of the buffer cavity of the present invention;

[0035] Description of the numbers in the figure:

[0036] 1. Nozzle outer tube; 2. Nozzle inner tube; 3. Drain pipe outlet; 4. Cooling pipeline; 5. Protective pipe; 6. Control rod; 7. Annular cleaning part; 8. Vibrating part; 9. Eccentric block; 10. Separation flushing hole; 11. Inner rod; 12. Electromagnet; 13. Heating chamber; 14. Water pipe outlet; 15. Buffer chamber; 17. NdFeB magnet. DETAILED DESCRIPTION

[0037] This embodiment 1 will combine the disclosed drawings to clearly and completely describe the technical solution, so that the purpose, technical solution and beneficial effects of the embodiment of the present disclosure are clearer. Obviously, the described embodiment is a part of the embodiment of the present disclosure, not all of the embodiments. Based on the described embodiment of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0038] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be the conventional meanings understood by the technical personnel of the present disclosure. The "first", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Up", "down", "inside", "outside" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. Example

[0039] See also Figure 1-3 , a nozzle for an injection molding machine with an anti-clogging function, comprises a nozzle outer tube 1, a nozzle inner tube 2 is fixedly connected inside the nozzle outer tube 1, a feed pipe port and a drain pipe port 3 are respectively connected to the surface of the nozzle outer tube 1, and the drain pipe port 3 is located at the bottom of the nozzle outer tube 1, and a cooling pipeline 4 is also wound on the surface of the nozzle outer tube 1, and a protective tube 5 is threadedly connected to the end of the nozzle outer tube 1, and an electric push rod is installed inside the protective tube 5, and a motor is fixedly installed at the output end of the electric push rod, and a control rod 6 is transmission-connected to the output end of the motor, and the end of the control rod 6 away from the motor extends into the nozzle inner tube 2 and is rotatably connected to the nozzle inner tube 2, and an annular cleaning part 7 fixedly connected to the control rod 6 is installed inside the nozzle inner tube 2; specifically, when in use, first, the cooling pipeline 4 can be connected to the circulating pump, and the cooling pipe wound on the nozzle outer tube 1 The circuit 4 plays a cooling role, thereby shortening the solidification time of the injection liquid in a molten state adhering to the inner wall of the nozzle inner tube 2; wherein, the motor adopts a servo motor, and the output end of the motor drives the control rod 6 to rotate forward and reversely, and the control rod 6 drives the fixedly connected annular cleaning part 7 to rotate forward and reversely, so that the flushing liquid sprayed outward from the annular cleaning part 7 produces a vortex, which not only enhances its own impact effect, but also can fully contact with the inner wall of the nozzle inner tube 2, and the cleaning effect is good; the electric push rod will push the annular cleaning part 7 to move toward the injection end of the nozzle inner tube 2 through the motor and the control rod 6, and fully dredge the nozzle inner tube 2, effectively avoiding the blockage of the nozzle inner tube 2; the flushed sewage and some impurities can be discharged outward through the sewage outlet 3, so as to avoid accumulation in the nozzle inner tube 2 and affect the subsequent cleaning effect.

[0040] See also Figure 4, the depth of the groove is consistent with the height of the vibration part 8, and when the vibration part 8 is in contact with the groove, the outer surface of the annular cleaning part 7 is in a smooth state. Specifically, the injection molding liquid is not easy to adhere to the annular cleaning part 7 and the vibration part 8. The annular cleaning part 7 is made of metal material, and the diameter of the vibration part 8 is half of the annular cleaning part 7. The outer diameter of the annular cleaning part 7 is equal to the inner diameter of the nozzle inner tube 2, and the annular cleaning part 7 and the nozzle inner tube 2 are concentric. Specifically, the annular cleaning part 7 is made of metal material with good thermal conductivity. The annular cleaning part 7 and the vibration part 8 are affected by the heat transfer of the flushing liquid, and their own temperature will increase, which effectively prevents the injection molding liquid from solidifying and facilitates the injection molding liquid to be thrown out under the dual forces of centrifugation and vibration.

[0041] See also Figure 4-6 The end surface of the annular cleaning portion 7 away from the control rod 6 is fitted with a vibrating portion 8, and an eccentric block 9 extending outward is provided on the outer periphery of the vibrating portion 8. A groove for accommodating the vibrating portion 8 is cut on the outer surface of the annular cleaning portion 7, and two symmetrical separation flushing holes 10 are provided on the inner wall of the groove, and the angle between the separation flushing holes 10 and the inner wall of the nozzle inner tube 2 is an acute angle. An inner rod 11 is fixedly connected to the end surface of the vibrating portion 8 facing the groove, and a groove for accommodating the radial movement of the inner rod 11 is provided in the control rod 6, and a compression spring is fixedly connected between the inner rod 11 and the inner wall of the groove, and an electromagnet 12 for magnetically adsorbing the inner rod 11 is fixedly connected inside the groove; specifically, when the nozzle inner tube 2 needs to be cleaned, first, the electromagnet 12 is powered off, and the control rod 6 loses the magnetic constraint of the electromagnet 12, so that it moves under the push of the compression spring, thereby pushing the vibrating portion 8 to move to a predetermined position, and after the vibrating portion 8 is separated from the groove, the two separation flushing holes in the groove are separated. The hole 10 is exposed, and the direction of the water flow ejected from the separation and flushing hole 10 is an acute angle with the inner wall of the nozzle inner tube 2. The water flow can easily flush the crack where the injection molding liquid is connected to the nozzle inner tube 2, thereby separating the adhered injection molding liquid from the inner wall, and effectively preventing the adhesion of the injection molding liquid; by adopting the above-mentioned method to clean the adhered injection molding liquid, the annular cleaning part 7 is not easy to contact with the adhered injection molding liquid, thereby reducing the resistance of the annular cleaning part 7 when it moves; because the vibration part 8 is installed on the annular cleaning part 7, when the annular cleaning part 7 rotates, it will synchronously drive the vibration part 8 to rotate. When the vibration part 8 rotates, its center of gravity is unstable under the action of the eccentric block 9 and vibrates, thereby driving the annular cleaning part 7 to vibrate, and then the annular cleaning part 7 will drive the nozzle inner tube 2 to vibrate, further playing a vibration separation role on the adhered injection molding liquid, and when the annular cleaning part 7 and the vibration part 8 rotate, the injection molding liquid adhered to themselves will be thrown out under the action of centrifugal force, effectively realizing self-cleaning.

[0042] See also Figure 6-8A heating chamber 13 is provided inside the end of the protective tube 5 away from the nozzle outer tube 1, wherein "a" represents a pipeline, and the water outlet of the heating chamber 13 is connected with the separation flushing hole 10 through the pipeline, wherein "b" represents an air inlet pipe, and the air inlet of the heating chamber 13 is fixedly connected with the air inlet pipe, and a valve is installed inside the air inlet pipe, and a water pipe port 14 connected with the heating chamber 13 is fixed on the outer surface of the protective tube 5, and solenoid valves are installed inside the water pipe port 14, the feed pipe port and the sewage pipe port 3. Specifically, the flushing liquid can be connected to the outside through the water pipe port 14, wherein the flushing liquid can be clean water. When the flushing liquid enters the heating chamber 13, the heating chamber 13 heats the flushing liquid through the internal heating wire, thereby reducing the temperature difference between the flushing liquid and the injection molding liquid in the molten state, so that the injection molding liquid is not easy to cool and solidify quickly; the adhered injection molding liquid produces a cold and hot expansion stress effect under the action of cooling by the cooling pipeline 4 and heating by the flushing liquid, and cracks are easily generated at the solidified contact between the injection molding liquid and the inner wall of the nozzle inner tube 2, so that it is convenient for the subsequent flushing liquid to flush the semi-solidified injection molding liquid from the cracks; when the adhered injection molding liquid is flushed, the air inlet can be connected to the external air pump, so that the heated gas is transported to the nozzle inner tube 2, which has a rapid drying effect on the nozzle inner tube 2, and is convenient for subsequent use; the annular cleaning part 7 and the vibration part 8 are affected by the heat transfer of the flushing liquid, and their own temperature will increase, which effectively prevents the injection molding liquid from solidifying, and facilitates the injection molding liquid to be thrown out under the dual forces of centrifugation and vibration.

[0043] See also Figure 8-9 , the inner wall of the nozzle outer tube 1 and the outer wall of the nozzle inner tube 2 do not contact, and a buffer chamber 15 is formed between the two. A plurality of elastic buffer sheets are provided in the buffer chamber 15, and one end of the elastic buffer sheet is fixedly connected to the inner wall of the buffer chamber 15, and the end of the elastic buffer sheet away from the buffer chamber 15 is fixedly connected to an airbag, and the airbag does not contact the inner wall of the buffer chamber 15. The buffer chamber 15 is filled with a buffer solution, and magnetic particles are added to the buffer solution. A neodymium iron boron magnet 17 is embedded in the end of the eccentric block 9 facing the inner wall of the nozzle inner tube 2, and a gap is left between the eccentric block 9 and the inner wall of the nozzle inner tube 2. The nozzle inner tube 2 is made of beryllium copper alloy material, and the inner wall of the nozzle inner tube 2 is smoothly set. Specifically, when the inner tube 2 of the nozzle vibrates, the buffer chamber 15 can effectively prevent the inner tube 2 of the nozzle from contacting and colliding with the outer tube 1 of the nozzle, thereby increasing the service life; the vibration energy of the inner tube 2 of the nozzle can be further absorbed by the airbag and the buffer, thereby reducing the influence of the vibration on the outer tube 1 of the nozzle; when the eccentric block 9 rotates, it will drive the embedded NdFeB magnet 17 to rotate, and when the NdFeB magnet 17 rotates, it will attract the magnetic particles to move through its own magnetic force, and the magnetic particles will stir the buffer, and the temperature of the buffer itself will quickly converge to a uniform level, and the overall cooling effect is good. There are multiple heat dissipation holes on the surface of the protective tube 5. Specifically, the protective groove protects the internal equipment, improves the safety of the equipment, and can dissipate heat in time through the heat dissipation holes, effectively avoiding the accumulation of heat.

[0044] Compared with the prior art, the adhered injection molding liquid generates thermal expansion stress effects under the action of cooling by the cooling pipeline 4 and heating by the flushing liquid. Cracks are easily generated at the solidified contact between the injection molding liquid and the inner wall of the nozzle inner tube 2, thereby facilitating the subsequent flushing liquid to flush the semi-solidified injection molding liquid from the cracks. The flushing liquid sprayed outward from the annular cleaning part 7 generates a vortex through the forward and reverse rotation of the annular cleaning part 7, which not only enhances its own impact effect, but also can fully contact with the inner wall of the nozzle inner tube 2, and has a good cleaning effect. The direction of the water sprayed from the separation flushing hole 10 is an acute angle with the inner wall of the nozzle inner tube 2. The water flow is easy to flush the crack where the injection molding liquid connects with the nozzle inner tube 2, thereby separating the adhered injection molding liquid from the inner wall, effectively preventing the adhesion of the injection molding liquid. When the vibration part 8 rotates, its center of gravity is unstable under the action of the eccentric block 9, and then the annular cleaning part 7 will drive the nozzle inner tube 2 to vibrate, further playing a vibration separation role on the adhered injection molding liquid.

[0045] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A nozzle for an injection molding machine with an anti-clogging function, characterized in that: The nozzle outer tube (1) comprises a nozzle inner tube (2) fixedly connected thereto, a feed pipe opening and a drain pipe opening (3) respectively connected to the surface of the nozzle outer tube (1), and the drain pipe opening (3) is located at the bottom of the nozzle outer tube (1), and a cooling pipeline (4) is also wound around the surface of the nozzle outer tube (1), the end of the nozzle outer tube (1) is threadedly connected to a protective tube (5), an electric push rod is installed inside the protective tube (5), a motor is fixedly installed at the output end of the electric push rod, a control rod (6) is drivingly connected to the output end of the motor, and the end of the control rod (6) away from the motor extends into the nozzle inner tube (2) and is rotatably connected to the nozzle inner tube (2), and an annular cleaning portion (7) fixedly connected to the control rod (6) is installed inside the nozzle inner tube (2); The end surface of the annular cleaning portion (7) away from the control rod (6) is fitted with a vibrating portion (8), the outer periphery of the vibrating portion (8) is provided with an eccentric block (9) extending outward, the outer surface of the annular cleaning portion (7) is provided with a groove for accommodating the vibrating portion (8), the inner wall of the groove is provided with two symmetrical separation flushing holes (10), the end surface of the vibrating portion (8) facing the groove is fixedly connected to an inner rod (11), the control rod (6) is provided with a slot for accommodating radial movement of the inner rod (11), a compression spring is fixedly connected between the inner rod (11) and the inner wall of the slot, and the bottom end of the slot is fixedly connected to an electromagnet (12) for magnetically adsorbing the inner rod (11); A heating chamber (13) is provided inside the end of the protection tube (5) away from the nozzle outer tube (1); a water outlet of the heating chamber (13) is connected to the separation flushing hole (10) through a pipeline; an air inlet of the heating chamber (13) is fixedly connected to an air inlet pipe, and a valve is installed inside the air inlet pipe; a water pipe port (14) connected to the heating chamber (13) is fixed on the outer surface of the protection tube (5); and solenoid valves are installed inside the water pipe port (14), the feed pipe port and the sewage pipe port (3); The inner wall of the nozzle outer tube (1) and the outer wall of the nozzle inner tube (2) do not contact each other, and a buffer chamber (15) is formed between the two. A plurality of elastic buffer sheets are provided in the buffer cavity (15), and one end of the elastic buffer sheet is fixedly connected to the inner wall of the buffer cavity (15); an end of the elastic buffer sheet away from the buffer cavity (15) is fixedly connected to an airbag, and the airbag does not contact the inner wall of the buffer cavity (15); The buffer cavity (15) is filled with a buffer solution, and magnetic particles are added to the buffer solution; A neodymium iron boron magnet (17) is embedded in the end of the eccentric block (9) facing the inner wall of the nozzle inner tube (2), and a gap is left between the eccentric block (9) and the inner wall of the nozzle inner tube (2).

2. The nozzle for injection molding machine with anti-clogging function according to claim 1, characterized in that: The nozzle inner tube (2) is made of a beryllium copper alloy material, and the inner wall of the nozzle inner tube (2) is smooth.

3. The nozzle for injection molding machine with anti-clogging function according to claim 1, characterized in that: The depth of the groove is consistent with the height of the vibration part (8); when the vibration part (8) is in contact with the groove, the outer surface of the annular cleaning part (7) is in a smooth state.

4. The nozzle for injection molding machine with anti-clogging function according to claim 1, characterized in that: The annular cleaning portion (7) is made of metal material, and the diameter of the vibrating portion (8) is half of the diameter of the annular cleaning portion (7).

5. The nozzle for injection molding machine with anti-clogging function according to claim 4, characterized in that: The outer diameter of the annular cleaning portion (7) is equal to the inner diameter of the nozzle inner tube (2), and the annular cleaning portion (7) and the nozzle inner tube (2) are concentric.

6. The nozzle for injection molding machine with anti-clogging function according to claim 1, characterized in that: A plurality of heat dissipation holes are formed through the surface of the protection tube (5), and an angle between the separation flushing hole (10) and the inner wall of the nozzle inner tube (2) is an acute angle.

Images