Injection nozzle of injection molding machine

Abstract

The utility model discloses an injection nozzle of an injection molding machine, which comprises a nozzle head, a nozzle seat and a filter component, the nozzle head and the nozzle seat are of hollow structures, a nozzle head rear section is formed at the rear end of the nozzle head, the nozzle head rear section is inserted into an accommodating cavity of the nozzle seat, so that the nozzle head is connected with the nozzle seat, the accommodating cavity is formed in the nozzle seat, and the filter component is arranged in the accommodating cavity. The filter component is arranged in the containing cavity of the nozzle seat and fixedly connected with the nozzle seat, the rear end of the nozzle head abuts against the filter component, the filter component comprises a cylindrical part, one end of the cylindrical part forms a top face, the other end of the cylindrical part forms an opening, and a plurality of through holes are formed in the peripheral wall and the top face of the cylindrical part. And the opening of the cylindrical part faces the hollow part of the nozzle seat. According to the utility model, the filter component is arranged, and the filter holes are uniformly distributed on the filter component, so that the filter component has a filter function, and when the injection molding machine performs injection molding, impurities in materials can be blocked in the cylindrical part, so that the impurities can be prevented from blocking the injection nozzle.

Description

Technical Field

[0001] The utility model relates to an injection nozzle for an injection molding machine, belonging to the technical field of mechanical equipment. Background Art

[0002] Injection molding machine is also called injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0003] The nozzle is an important part of the injection molding machine. When the existing nozzle sprays the raw materials, the raw materials inevitably contain lumps or impurities. At the same time, in order to reduce costs, the injection molding industry reuses the recycled materials and mixes the recycled materials with the raw materials in a certain proportion and uses them as raw materials, which inevitably brings impurities into the injection molding machine. Therefore, the nozzle is easy to be blocked, and after being blocked, it is impossible to clean the inside. The only way is to replace the entire injection molding machine nozzle, which is costly. In addition, raw materials containing lumps or fine impurities may also be sprayed into the injection mold, which will cause a great impact on the mold, causing damage to the mold, reducing production efficiency, and further increasing the cost of injection molding. Therefore, this is a problem that needs to be solved urgently.

[0004] In the prior art, Chinese Patent No. 201510520599.6 discloses an injection nozzle for an injection molding machine. The patent has a filter head, and the filter head filters the injection material through slats. Since the gap between the slats is too large, lumps or impurities are still injected into the mold as materials, affecting the quality of the injection products. Summary of the invention

[0005] The main purpose of the utility model is to provide an injection nozzle for an injection molding machine, which aims to prevent the nozzle from being blocked and to prevent hard blocks or impurities from being injected into products as materials.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an injection molding machine injection nozzle, including a nozzle head, a nozzle seat and a filter component, the nozzle head and the nozzle seat are hollow structures, a accommodating cavity is formed in the nozzle seat, a nozzle head rear section is formed at the rear end of the nozzle head, the nozzle head rear section is inserted into the accommodating cavity of the nozzle seat, so that the nozzle head is connected to the nozzle seat, the filter component is placed in the accommodating cavity of the nozzle seat, and the filter component is fixedly connected to the nozzle seat, the rear end of the nozzle head is against the filter component, the filter component includes a cylindrical portion, one end of the cylindrical portion forms a top surface, and the other end forms an opening, a plurality of through holes are provided on the outer peripheral wall and the top surface of the cylindrical portion, and the opening of the cylindrical portion faces the hollow part of the nozzle seat.

[0007] Furthermore, in the above-mentioned injection molding machine injection nozzle, the through holes are evenly distributed on the outer peripheral wall and the top surface of the cylindrical portion of the filter component.

[0008] Furthermore, the above-mentioned injection molding machine injection nozzle, wherein: the filter component also includes an outer ring, an outer ring through hole is formed on the outer ring, the outer ring is connected to one end of the filter component opening, so that the outer ring through hole is connected to the filter component opening, a recess is provided in the accommodating cavity of the nozzle seat, the outer ring is placed in the recess, the outer ring and the recess are interference fit, so that the filter component is fixedly connected to the nozzle seat.

[0009] Furthermore, the above-mentioned injection molding machine injection nozzle, wherein: the edge of one end of the opening of the cylindrical portion extends obliquely in the outer periphery to form a circle of extension portion, the outer peripheral surface of the extension portion is an inclined surface, and through holes are evenly distributed circumferentially on the inclined surface, a circle of protrusions is formed on the end surface of one end of the outer ring, the rear end face of the extension portion is connected to the front end face of the protrusion, and the filter component is integrally formed.

[0010] Further, the above-mentioned injection molding machine injection nozzle, wherein: the hollow part of the nozzle head includes a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity, the first cavity is located in the rear section of the nozzle head, the first cavity is cylindrical, the second cavity is truncated cone, the third cavity is cylindrical, the fourth cavity is truncated cone, the fifth cavity is cylindrical, the second cavity is connected to the first cavity at its end with a larger aperture, the second cavity is connected to one end of the third cavity at its end with a smaller aperture, the fourth cavity is connected to the other end of the third cavity at its end with a larger aperture, the fifth cavity is located at the front end of the nozzle head, the fourth cavity is connected to the fifth cavity at its end with a smaller aperture, the cylindrical portion is located in the first cavity, and a gap is formed between the outer peripheral wall of the cylindrical portion and the inner wall of the first cavity.

[0011] Further, the above-mentioned injection molding machine injection nozzle, wherein: the hollow part of the nozzle seat includes a first cavity of the nozzle seat and a second cavity of the nozzle seat, the first cavity of the nozzle seat is truncated cone-shaped, the second cavity of the nozzle seat is cylindrical, the end of the first cavity of the nozzle seat with a larger aperture is located at the rear end of the nozzle seat, the end of the first cavity of the nozzle seat with a smaller aperture is connected to one end of the second cavity of the nozzle seat, and the other end of the second cavity of the nozzle seat is connected to the opening of the cylindrical part of the filter component in the accommodating cavity.

[0012] Furthermore, in the above-mentioned injection molding machine injection nozzle, a connecting flange is formed on the outer periphery of the rear end of the nozzle seat.

[0013] The utility model has the following beneficial effects: the utility model is provided with a filter component, and the filter holes are evenly distributed on the filter component, so that it has a filtering function. When the injection molding machine is injecting, the impurities in the material can be blocked inside the cylindrical part, which can avoid the impurities from clogging the injection nozzle and ensure the quality of the plastic parts; and the outer ring of the filter component is engaged with the nozzle seat 2, and the filter component is limited by the engagement of the nozzle head and the nozzle seat, and the assembly is simple and convenient. After long-term use, the nozzle head and the nozzle seat can be disassembled to take out the filter component, clean or replace the filter component, and the maintenance is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the injection nozzle structure of an injection molding machine;

[0015] Figure 2 This is an exploded diagram of the injection nozzle structure of the injection molding machine;

[0016] Figure 3 This is a cross-sectional view of the injection nozzle structure of the injection molding machine;

[0017] Figure 4 Is the filter component intent.

[0018] In the figure: 1. Nozzle head; 11. Rear section of nozzle head; 111. First cavity; 112. Second cavity; 113. Third cavity; 114. Fourth cavity; 115. Fifth cavity; 2. Nozzle seat; 21. Connecting flange; 22. First cavity of nozzle seat; 23. Second cavity of nozzle seat; 24. Accommodating cavity; 25. Recessed portion; 3. Filter component; 31. Outer ring; 311. Protruding portion; 312. Extending portion; 32. Cylindrical portion; 33. Through hole. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figures 1 to 4As shown, the injection molding machine injection nozzle includes a nozzle head 1, a nozzle seat 2 and a filter component 3. The nozzle head 1 and the nozzle seat 2 are hollow structures, and a accommodating cavity 24 is formed in the nozzle seat 2. A nozzle head rear section 11 is formed at the rear end of the nozzle head 1, and the nozzle head rear section 11 is inserted into the accommodating cavity 24 of the nozzle seat 2, so that the nozzle head 1 is connected to the nozzle seat 2, and the hollow part of the nozzle head 1 is communicated with the hollow part of the nozzle seat 2. The filter component 3 is placed in the accommodating cavity of the nozzle seat 2, and the filter component 3 is fixedly connected to the nozzle seat 2. The rear end of the nozzle head 2 abuts against the filter component 3 to limit the filter component 3. The filter component 3 includes a cylindrical portion 32, one end of the cylindrical portion 32 forms a top surface, and the other end forms an opening. A plurality of through holes 33 are provided on the outer peripheral wall and the top surface of the cylindrical portion 32, and the opening of the cylindrical portion 32 faces the hollow part of the nozzle seat 2.

[0021] like Figure 3 and Figure 4 As shown, the through holes 33 are evenly distributed on the outer peripheral wall and the top surface of the cylindrical portion 32 of the filter component 3. The filter component 3 also includes an outer ring 31, which is provided with an outer ring through hole, and the outer ring 31 is connected to one end of the opening of the filter component 3, and the outer ring through hole is connected to the opening of the filter component 3. The accommodating cavity 24 of the nozzle seat 2 is provided with a recessed portion 25, and the outer ring 31 is placed in the recessed portion 25. The outer ring 31 and the recessed portion 25 are interference fit, so that the filter component 3 is fixedly connected to the nozzle seat 2.

[0022] Preferably, the edge of the open end of the cylindrical portion 32 extends obliquely toward the outer circumference to form a circle of extension portion 312, the outer circumferential surface of the extension portion 312 is an inclined surface, and the inclined surface is circumferentially uniformly provided with through holes 33, and a circle of protrusions 311 is formed on one end surface of the outer ring 31, and the rear end surface of the extension portion 312 is connected to the front end surface of the protrusion 311. The filter component 3 is integrally formed.

[0023] like Figure 3 As shown, the hollow part of the nozzle head 1 includes a first cavity 111, a second cavity 112, a third cavity 113, a fourth cavity 114 and a fifth cavity 115. The first cavity 111 is located in the rear section 11 of the nozzle head. The first cavity 111 is cylindrical, the second cavity 112 is truncated cone-shaped, the third cavity 113 is cylindrical, the fourth cavity 114 is truncated cone-shaped, and the fifth cavity 115 is cylindrical. The second cavity 112 is connected to the first cavity 111 at one end with a larger aperture, and the second cavity 112 is connected to one end of the third cavity 113 at one end with a smaller aperture. The fourth cavity 114 is connected to the other end of the third cavity 113 at one end with a larger aperture. The fifth cavity 115 is located at the front end of the nozzle head 1, and the fourth cavity 114 is connected to the fifth cavity 115 at one end with a smaller aperture. The cylindrical portion 32 is located in the first cavity 111 , and a gap is formed between the outer peripheral wall of the cylindrical portion 32 and the inner wall of the first cavity 111 .

[0024] A connecting flange 21 is formed on the outer periphery of the rear end of the nozzle seat 2. The hollow part of the nozzle seat 2 includes a first cavity 22 of the nozzle seat and a second cavity 23 of the nozzle seat. The first cavity 22 of the nozzle seat is truncated cone-shaped, and the second cavity 23 of the nozzle seat is cylindrical. The end of the first cavity 22 of the nozzle seat with a larger aperture is located at the rear end of the nozzle seat 2, and the end of the first cavity 22 of the nozzle seat with a smaller aperture is connected to one end of the second cavity 23 of the nozzle seat. The other end of the second cavity 23 of the nozzle seat is connected to the opening of the cylindrical portion 32 of the filter component 3 in the accommodating cavity 24.

[0025] It can be seen from the above description that the filter component 3 is evenly distributed with filter holes 33, so that it has a filtering function. When the injection molding machine is injecting, the impurities in the material can be blocked inside the cylindrical part 32, which can avoid the impurities from clogging the injection nozzle 1 and ensure the quality of the plastic parts; and the outer ring 31 of the filter component is engaged with the nozzle seat 2, and the filter component is limited by the engagement of the nozzle head 1 and the nozzle seat 2. The assembly is simple and convenient. After long-term use, the nozzle head 1 and the nozzle seat 2 can be disassembled to take out the filter component 3, clean or replace the filter component 3, and the maintenance is simple and convenient.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An injection nozzle for an injection molding machine, characterized in that: It includes a nozzle head, a nozzle seat and a filter component, the nozzle head and the nozzle seat are hollow structures, a accommodating cavity is formed in the nozzle seat, a nozzle head rear section is formed at the rear end of the nozzle head, the nozzle head rear section is inserted into the accommodating cavity of the nozzle seat, so that the nozzle head is connected to the nozzle seat, the filter component is placed in the accommodating cavity of the nozzle seat, and the filter component is fixedly connected to the nozzle seat, the rear end of the nozzle head is against the filter component, the filter component includes a cylindrical part, one end of the cylindrical part forms a top surface, and the other end forms an opening, a plurality of through holes are provided on the outer peripheral wall and the top surface of the cylindrical part, and the opening of the cylindrical part faces the hollow part of the nozzle seat.

2. The injection molding machine injection nozzle according to claim 1, characterized in that: The through holes are evenly distributed on the outer peripheral wall and the top surface of the cylindrical portion of the filter component.

3. The injection molding machine injection nozzle according to claim 1, characterized in that: The filter component also includes an outer ring, which is formed with an outer ring through hole. The outer ring is connected to one end of the filter component opening, so that the outer ring through hole is connected to the filter component opening. A recessed portion is provided in the accommodating cavity of the nozzle seat, and the outer ring is placed in the recessed portion. The outer ring and the recessed portion are interference fit, so that the filter component is fixedly connected to the nozzle seat.

4. The injection molding machine injection nozzle according to claim 3, characterized in that: The edge of one end of the opening of the cylindrical portion extends obliquely toward the outer circumference to form a circle of extension portion, the outer circumferential surface of the extension portion is an inclined surface, and through holes are evenly distributed circumferentially on the inclined surface, a circle of protrusions is formed on the end surface of one end of the outer ring, the rear end surface of the extension portion is connected to the front end surface of the protrusion, and the filter component is formed in one piece.

5. The injection molding machine injection nozzle according to claim 1, characterized in that: The hollow part of the nozzle head includes a first cavity, a second cavity, a third cavity, a fourth cavity and a fifth cavity. The first cavity is located in the rear section of the nozzle head, the first cavity is cylindrical, the second cavity is truncated cone, the third cavity is cylindrical, the fourth cavity is truncated cone, and the fifth cavity is cylindrical. The second cavity is connected to the first cavity at one end with a larger aperture, the second cavity is connected to one end of the third cavity at one end with a smaller aperture, the fourth cavity is connected to the other end of the third cavity at one end with a larger aperture, the fifth cavity is located at the front end of the nozzle head, and the fourth cavity is connected to the fifth cavity at one end with a smaller aperture. The cylindrical portion is located in the first cavity, and a gap is formed between the outer peripheral wall of the cylindrical portion and the inner wall of the first cavity.

6. The injection molding machine injection nozzle according to claim 5, characterized in that: The hollow part of the nozzle seat includes a first cavity of the nozzle seat and a second cavity of the nozzle seat. The first cavity of the nozzle seat is in a truncated cone shape, and the second cavity of the nozzle seat is in a cylindrical shape. The end of the first cavity of the nozzle seat with a larger aperture is located at the rear end of the nozzle seat, and the end of the first cavity of the nozzle seat with a smaller aperture is connected to one end of the second cavity of the nozzle seat, and the other end of the second cavity of the nozzle seat is connected to the opening of the cylindrical part of the filter component in the accommodating cavity.

7. The injection molding machine injection nozzle according to claim 1, characterized in that: A connecting flange is formed on the outer periphery of the rear end of the nozzle seat.

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