Injection molding nozzle

Abstract

The utility model relates to an injection molding nozzle which comprises a main body, a material channel is arranged in the main body, one end of the material channel is a feed port, the other end of the material channel is a discharge port, the main body is provided with mounting holes, the mounting holes are communicated with the material channel and the external environment, the mounting holes are arranged at intervals in the radial direction, and exhaust devices are arranged in the mounting holes. The exhaust device comprises a water-gas channel valve, a channel plate and a pressing cap, the channel plate is arranged between the water-gas channel valve and the pressing cap, a plurality of through holes are formed in the channel plate, the pressing cap is provided with exhaust holes communicated with the through holes, and water gas in the material channel is exhausted through the water-gas channel valve, the channel plate and the pressing cap in sequence. The injection molding nozzle disclosed by the utility model can be used for filtering 60-70% of moisture of a material so as to solve the problem of material flower gas marks of a product, so that the material can play a key role when the material is not baked or the material returning proportion is large, the labor and the power consumption can be saved, and the problem of material flower hollowing on the surface of the molded product caused by the non-dry raw material in the injection molding process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to an injection molding nozzle. Background Art

[0002] The injection nozzle is a crucial component of an injection molding machine. Its primary function is to inject molten plastic material through the nozzle into a mold to form the desired plastic product. Existing injection nozzles typically feature a central material delivery channel and surrounding heating devices to maintain a constant material temperature. For example, patent publication number CN105128273A discloses an injection molding nozzle. However, moisture in the material can easily lead to surface hollowing after molding, compromising product quality. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides an injection molding nozzle which can discharge moisture in materials and avoid hollowing of materials after molding.

[0004] The specific technical solution is as follows: An injection molding nozzle includes a main body, a material channel is provided in the main body, one end of the material channel is a feed port, and the other end is a discharge port. The main body is provided with a mounting hole, which connects the material channel with the external environment. Several mounting holes are radially spaced apart, and an exhaust device is provided in the mounting hole. The exhaust device includes a water vapor channel valve, a channel plate and a pressure cap. The channel plate is arranged between the water vapor channel valve and the pressure cap. The channel plate is provided with several perforations. The pressure cap has exhaust holes connected to the perforations. The water vapor in the material channel is discharged through the water vapor channel valve, the channel plate and the pressure cap in sequence.

[0005] In some embodiments, a guide channel is provided at the end of the exhaust hole, and a plurality of guide channels are arranged around the exhaust hole, and the guide channels are arranged corresponding to the through holes.

[0006] In some embodiments, the guide channel includes a first channel and a second channel connected to the first channel. The first channel is radially arranged, and the second channel is inclined and connected to the exhaust hole.

[0007] In some embodiments, a polygonal hole is provided on the top of the exhaust hole.

[0008] In some embodiments, a constant temperature tube is provided in the main body, and a plurality of constant temperature tubes are arranged axially at intervals.

[0009] In some embodiments, the constant temperature tube is arranged in the socket, and the socket is arranged parallel to the material channel.

[0010] In some embodiments, a plurality of exhaust devices are arranged axially to form an exhaust group.

[0011] In some embodiments, a plurality of exhaust groups are arranged around the material channel.

[0012] In some embodiments, the main body has a mounting plane, a plurality of mounting planes are arranged around the material channel, and the exhaust group is arranged on the mounting plane.

[0013] In some embodiments, the cross-section of the body is polygonal.

[0014] The technical effect of this utility model is that the injection molding nozzle of this utility model can filter out 60-70% of the moisture in the material, thereby solving the problem of product material grain and air grain, allowing the material to play a key role when it is not baked or the proportion of returned material is large, saving labor and electricity consumption. It solves the problem of surface grain and hollowing of the product after molding due to the raw material not being dry in injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a three-dimensional diagram of the injection nozzle according to an embodiment of the present utility model.

[0017] Figure 2 It is a cross-sectional view of the main body of an embodiment of the present utility model.

[0018] Figure 3 It is a cross-sectional view of the injection nozzle according to an embodiment of the present invention.

[0019] Figure 4 This is another cross-sectional view of the injection nozzle according to an embodiment of the present invention.

[0020] Figure 5 Schematic diagram of the injection nozzle according to an embodiment of the present invention.

[0021] Figure 6 Schematic diagram of a channel plate according to an embodiment of the present invention.

[0022] Figure 7 It is a schematic diagram of a pressure cap according to an embodiment of the present invention.

[0023] Figure 8 This is another schematic diagram of the pressure cap according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0028] like Figures 1 to 8As shown, an injection molding nozzle according to this embodiment includes a main body 1, within which is a material channel 2. The material channel 2 has a feed port 21 at one end and a discharge port 22 at the other end. Material enters through the feed port 21 and exits through the discharge port 22. The main body 1 is provided with a mounting hole 11, which connects the material channel 2 with the external environment. Several mounting holes 11 are radially spaced apart. An exhaust device 3 is provided within the mounting hole 11, which is capable of discharging moisture from the material. The exhaust device 3 includes a moisture channel valve 4, a channel plate 5, and a pressure cap 6. The channel plate 5 is disposed between the moisture channel valve 4 and the pressure cap 6. The channel plate 5 is provided with several perforations 51, and the pressure cap 6 has exhaust holes 61 connected to the perforations 51. Moisture from the material channel 2 is discharged sequentially through the moisture channel valve 4, the channel plate 5, and the pressure cap 6. The moisture channel valve 4 is installed near the material channel 2, followed by the channel plate 5, and finally the pressure cap 6, so that the pressure cap 6 can compress the moisture channel valve 4. In the above technical solution, the material in material channel 2 is squeezed, and the moisture trapped within it is discharged through the moisture channel valve, passing through channel plate 5 and then through pressure cap 6 to the external environment. This technical solution can filter out 60-70% of the moisture in the material, thereby eliminating the product's surface blemishes and air stains. This allows the material to be used in applications where baking is not necessary or the proportion of recycled material is high, saving labor and electricity. It also solves the problem of surface blemishes and hollowing in the finished product caused by wet raw materials during injection molding.

[0029] In this embodiment, a guide channel 62 is provided at the end of the exhaust hole 61. Several guide channels 62 are arranged around the exhaust hole 61. The guide channels are arranged corresponding to the perforations 51, thereby increasing the area of ​​ventilated water and improving the smoothness of gas and water discharge. The guide channel 62 includes a first channel 621 and a second channel 622 connected to the first channel 621. The first channel 621 is radially arranged, and the second channel 622 is inclined and connected to the exhaust hole 61. The water vapor discharged from some perforations 51 passes through the first and second channels and then flows into the exhaust hole 61 for discharge, thereby increasing the area of ​​ventilated water and improving the smoothness of gas and water discharge. A polygonal hole 611 is provided at the top of the exhaust hole 61 to facilitate tool insertion and installation.

[0030] In this embodiment, a thermostat tube 7 is provided in the main body 1. Several thermostat tubes 7 are arranged axially at intervals. By arranging the thermostat tubes 7, the temperature of the main body 1 can be maintained, thereby stabilizing the temperature of the material. The thermostat tube 7 is installed in the socket 12, and the socket 12 is arranged parallel to the axis 10 of the material channel 2, so that the material can be heated evenly along the moving path. Several exhaust devices 3 are arranged axially to form an exhaust group 30, such as Figure 1As shown in the dashed box, this allows for smooth moisture removal along the material's path. Several exhaust groups 30 are arranged around the material channel, each facing in different directions, thereby enhancing moisture removal. The main body 1 has mounting surfaces 13, which surround the material channel 2. The exhaust groups 30 are positioned on these surfaces, facilitating installation of the exhaust system. The main body 1 has a polygonal cross-section, and in this embodiment, six mounting surfaces are provided.

[0031] The injection molding nozzle of this embodiment can filter out 60-70% of the moisture in the material, thereby solving the problem of product surface marks and air marks. This allows the material to be used when it is not baked or when the proportion of return material is large, saving labor and electricity. It also solves the problem of surface marks and hollows in the product after molding due to the raw material not being dry during injection molding.

[0032] The above describes an injection molding nozzle of the present invention. However, the present invention is not limited to the above specific embodiments. Various modifications and variations are possible without departing from the scope of the claims. The present invention includes various modifications and variations within the scope of the claims.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An injection molding nozzle, comprising a main body, a material channel provided in the main body, one end of the material channel being a feed port and the other end being a discharge port, characterized in that: The main body is provided with a mounting hole, which connects the material channel with the external environment. Several mounting holes are radially spaced apart. An exhaust device is provided in the mounting hole. The exhaust device includes a water vapor channel valve, a channel plate and a pressure cap. The channel plate is arranged between the water vapor channel valve and the pressure cap. The channel plate is provided with several through holes. The pressure cap has exhaust holes connected with the through holes. The water vapor in the material channel is discharged through the water vapor channel valve, the channel plate and the pressure cap in sequence.

2. The injection molding nozzle according to claim 1, characterized in that A guide channel is provided at the end of the exhaust hole, and a plurality of guide channels are arranged around the exhaust hole, and the guide channels are arranged corresponding to the perforations.

3. The injection molding nozzle according to claim 2, characterized in that The guide channel includes a first channel and a second channel connected to the first channel. The first channel is radially arranged, and the second channel is inclined and connected to the exhaust hole.

4. The injection molding nozzle according to claim 3, characterized in that A polygonal hole is provided on the top of the exhaust hole.

5. The injection molding nozzle according to claim 1, characterized in that A constant temperature tube is arranged in the main body, and a plurality of constant temperature tubes are arranged axially at intervals.

6. The injection molding nozzle according to claim 5, characterized in that The constant temperature tube is arranged in the insertion hole, and the insertion hole is arranged parallel to the material channel.

7. The injection molding nozzle according to claim 1, characterized in that A plurality of exhaust devices are arranged along the axial direction to form an exhaust group.

8. The injection molding nozzle according to claim 7, characterized in that A plurality of exhaust groups are arranged around the material channel.

9. The injection molding nozzle according to claim 8, characterized in that The main body has a mounting plane, a plurality of mounting planes are arranged around the material channel, and the exhaust group is arranged on the mounting plane.

10. The injection molding nozzle according to claim 9, characterized in that The cross section of the main body is polygonal.

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