Injection nozzle of injection machine

Abstract

The utility model provides an injection nozzle of an injection machine, which relates to the technical field of injection machines and comprises an injection nozzle shell, a connecting piece is mounted on the upper portion of the injection nozzle shell, a central column is mounted on the inner side of the injection nozzle shell and the inner side of the connecting piece, a threaded groove is formed in the side face of the central column, and a spiral groove is formed in the inner side of the injection nozzle shell. The spiral grooves correspond to the threaded grooves in position, and the outer diameters of the spiral grooves are sequentially reduced from top to bottom. Glue is injected into the injection nozzle shell through the injection hole, flows into the threaded groove in the center column and the spiral groove in the injection nozzle shell, flows in the threaded groove and the spiral groove, and can be fully and uniformly mixed through the paths of the threaded groove and the spiral groove, and when the glue flows to the lower part of the center column, the glue flows into the injection nozzle shell through the injection hole. The rubber material on the thread groove can enter the converging cavity along the converging face, the rubber material in the spiral groove can also enter the converging cavity, and the purposes that the rubber material flows evenly, and the vulcanizing time is shortened are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection machines, and more specifically, particularly relates to a nozzle of an injection machine. Background Art

[0002] A rubber injection machine is the main molding equipment for making various shaped rubber products by using thermosetting rubber with a rubber molding die. During the working process of the injection machine, it is necessary to roll the strip-shaped rubber raw material into the internal storage cylinder for plasticization and then inject it into the injection cylinder, and then the rubber in the injection cylinder is injected into the rubber mold by the injection component, so that the rubber is vulcanized and formed in the mold, and then different shaped rubber products are produced.

[0003] Based on the above, the inventor found the following problems: when the nozzle of the injection machine is in use, the internal friction coefficient is low, the flow of the rubber compound inside the nozzle is not uniform enough, and the product requires a long vulcanization time, which is not conducive to improving the overall product quality and processing efficiency.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a nozzle of an injection machine is provided, in order to achieve a more practical value purpose. Content of the Utility Model

[0005] In order to solve the above technical problems, the utility model provides a nozzle of an injection machine to solve the problem that the flow of the rubber compound inside the existing nozzle is not uniform enough and the vulcanization time is long.

[0006] The purpose and effect of a nozzle of an injection machine of the utility model are achieved by the following specific technical means:

[0007] A nozzle of an injection machine includes a nozzle housing, a connector is installed on the upper part of the nozzle housing, a central column is installed inside the nozzle housing and the connector, a thread groove is formed on the side surface of the central column, a spiral groove is formed inside the nozzle housing, the positions of the spiral groove and the thread groove correspond to each other, and the outer diameter of the spiral groove decreases sequentially from top to bottom.

[0008] Further, an injection hole is formed on the connector, and the number of the injection holes is multiple, and they are respectively distributed in a circumferential manner on the side surface of the central column.

[0009] Further, an inclined surface is formed on the upper part of the central column, and a converging surface is arranged at the lower end of the central column.

[0010] Further, a converging cavity is formed inside the lower part of the nozzle housing, the converging surface is located inside the converging cavity, and the lower parts of the thread groove and the spiral groove are connected to the inside of the converging cavity.

[0011] Furthermore, an injection member is installed at the lower part of the nozzle housing. An injection channel is formed in the middle of the injection member, and the injection channel is connected to the inside of the confluence cavity.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, the rubber material is injected into the inside of the nozzle housing through the injection hole. The rubber material will flow into the thread grooves on the central column and the inside of the spiral groove in the nozzle housing. The rubber material flows in the thread grooves and the spiral groove. Through the paths of the thread grooves and the spiral groove, the rubber material can be fully mixed and evenly distributed. When the rubber material flows to the lower part of the central column, the rubber material on the thread groove will enter the inside of the confluence cavity along the confluence surface, and the rubber material inside the spiral groove will also enter the inside of the confluence cavity, achieving the purpose of uniform flow of the rubber material and reducing the vulcanization time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional view of a nozzle of an injection machine according to the utility model.

[0015] Figure 2 is a schematic external view of the whole of a nozzle of an injection machine according to the utility model.

[0016] Figure 3 is a schematic top view of the whole of a nozzle of an injection machine according to the utility model.

[0017] In the figure, the corresponding relationship between the component names and the reference numerals of the drawings is as follows:

[0018] 1. Nozzle housing; 2. Connecting member; 3. Injection hole; 4. Central column; 5. Inclined surface; 6. Confluence surface; 7. Thread groove; 8. Spiral groove; 9. Confluence cavity; 10. Injection member; 11. Injection channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes in detail the embodiments of the utility model with reference to the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0020] In the description of the utility model, unless otherwise specified, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment

[0022] As shown in the attached Figure 1 to the attached Figure 3 figures:

[0023] The present utility model provides a nozzle for an injection machine, which includes a nozzle housing 1. A connecting member 2 is installed on the upper part of the nozzle housing 1. A central column 4 is installed inside the nozzle housing 1 and the connecting member 2. A threaded groove 7 is formed on the side surface of the central column 4. A spiral groove 8 is formed inside the nozzle housing 1. The positions of the spiral groove 8 and the threaded groove 7 correspond to each other. The outer diameter of the spiral groove 8 decreases sequentially from top to bottom. An injection hole 3 is formed on the connecting member 2. The number of the injection holes 3 is multiple, and they are circumferentially distributed on the side surface of the central column 4 respectively. An inclined surface 5 is formed on the upper part of the central column 4. A converging surface 6 is arranged at the lower end of the central column 4. When the rubber material is injected into the interior of the nozzle housing 1 through the injection hole 3, the rubber material will flow into the threaded groove 7 on the central column 4 and the interior of the spiral groove 8 in the nozzle housing 1. The rubber material flows in the threaded groove 7 and the spiral groove 8. Through the paths of the threaded groove 7 and the spiral groove 8, the rubber material can be fully mixed and homogenized.

[0024] Wherein, a converging cavity 9 is formed inside the lower part of the nozzle housing 1. The converging surface 6 is located inside the converging cavity 9. The lower parts of the threaded groove 7 and the spiral groove 8 are connected to the interior of the converging cavity 9. When the rubber material flows to the lower part of the central column 4, the rubber material on the threaded groove 7 will enter the interior of the converging cavity 9 along the converging surface 6, and the rubber material inside the spiral groove 8 will also enter the interior of the converging cavity 9.

[0025] Wherein, an injection member 10 is installed on the lower part of the nozzle housing 1. An injection channel 11 is formed in the middle of the injection member 10. The injection channel 11 is connected to the interior of the converging cavity 9. The rubber material on the threaded groove 7 will enter the interior of the converging cavity 9 along the converging surface 6, and the rubber material inside the spiral groove 8 enters the interior of the converging cavity 9. At this time, the rubber material inside the converging cavity 9 enters the mold through the injection channel 11 inside the injection member 10.

[0026] The specific usage method and function of this embodiment:

[0027] In the present utility model, first, the rubber material is injected into the interior of the nozzle housing 1 through the injection hole 3. The rubber material will flow into the thread grooves 7 on the central column 4 and the interior of the spiral groove 8 in the nozzle housing 1. The rubber material flows within the thread grooves 7 and the spiral groove 8. Through the paths of the thread grooves 7 and the spiral groove 8, the rubber material can be fully and evenly mixed. When the rubber material flows to the lower part of the central column 4, the rubber material on the thread grooves 7 will enter the interior of the confluence cavity 9 along the confluence surface 6, and the rubber material inside the spiral groove 8 will also enter the interior of the confluence cavity 9. At this time, the rubber material inside the confluence cavity 9 enters the mold through the injection channel 11 in the injection member 10.

[0028] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A nozzle of an injection machine, comprising a nozzle housing (1), characterized in that: A connecting piece (2) is installed on the upper part of the nozzle shell (1), a center column (4) is installed on the inner side of the nozzle shell (1) and the connecting piece (2), a thread groove (7) is provided on the side of the center column (4), and a spiral groove (8) is provided on the inner side of the nozzle shell (1), the positions of the spiral groove (8) and the thread groove (7) correspond to each other, and the outer diameter of the spiral groove (8) decreases from top to bottom.

2. A nozzle for an injection machine as claimed in claim 1, characterized in that: The connecting piece (2) is provided with injection holes (3), and the number of the injection holes (3) is multiple and they are respectively located on the side surfaces of the central column (4) and distributed in a circular pattern.

3. The nozzle of an injection machine according to claim 1, characterized in that: The upper part of the central column (4) is provided with an inclined surface (5), and the lower end of the central column (4) is provided with a converging surface (6).

4. A nozzle for an injection machine as claimed in claim 3, characterized in that: A merging cavity (9) is provided on the inner side of the lower part of the nozzle shell (1), the merging surface (6) is located inside the merging cavity (9), and the lower parts of the thread groove (7) and the spiral groove (8) are connected to the inside of the merging cavity (9).

5. A nozzle for an injection machine as claimed in claim 4, characterized in that: An injection piece (10) is installed at the lower part of the nozzle shell (1), and an injection channel (11) is opened in the middle of the injection piece (10), and the injection channel (11) is connected to the inside of the merging cavity (9).

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