Hot runner system and main inlet nozzle structure thereof

Abstract

The utility model provides a hot runner system and a main inlet nozzle structure thereof, the main inlet nozzle structure is a split type structure, and comprises: a main body structure, the first end of which is provided with a first fixing part and a first stop part; the fixing structure comprises a second fixing part, a third fixing part and a second stopping part, the second fixing part and the first fixing part are combined to fix the fixing structure to the first end of the main body structure, and the third fixing part is used for fixing the fixing structure to the splitter plate; and the backstop structure is matched with the first backstop part and the second backstop part to limit the rotation of the fixing structure relative to the main body structure. The problems that in the prior art, an integrated main inlet nozzle structure is complex in structure, large in machining difficulty and the like can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of injection molds, and in particular to a hot runner system and a main nozzle structure thereof. Background Art

[0002] Injection molding is a widely used production process in modern industrial production. Molten plastic material undergoes a series of operations, including pressurization, injection, and cooling, to produce the desired plastic product. This entire process is typically performed by an injection molding machine. During the injection molding process, the material enters the hot runner system within the injection mold through a main inlet, where it is injected into the mold cavity. Hot runner technology for injection molds offers numerous advantages, such as saving raw materials and improving process quality. However, the actual machining of the hot runner system itself still suffers from numerous drawbacks, making the machining process overly complex, increasing cycle time, and increasing costs. For example, in existing technologies, the main inlet structure is designed as a one-piece structure, which appears to be easier to install. However, in reality, the main inlet structure not only includes the feed channel and other components, but also includes connections to the manifold. This one-piece design not only complicates the mold structure and makes the overall main inlet structure difficult to manufacture, but also increases the cost of the main inlet structure, wasting processing time and effort. Furthermore, it is inconvenient to repair or replace. Summary of the Invention

[0003] The purpose of this application is to provide a hot runner system and a main nozzle structure thereof, which have solved the problems of the integrated main nozzle structure being complex and difficult to manufacture in the prior art.

[0004] In order to achieve one of the above-mentioned objects of the invention, an embodiment of the present application provides a main nozzle structure of a hot runner system, wherein the main nozzle structure is a split structure and comprises:

[0005] A main body structure, wherein a first fixing portion and a first stopping portion are provided at a first end portion of the main body structure;

[0006] a fixing structure comprising a second fixing portion, a third fixing portion, and a second stopper, wherein the second fixing portion is combined with the first fixing portion to fix the fixing structure to the first end portion of the main structure, and the third fixing portion is used to fix the fixing structure to the diverter plate; and

[0007] a stop structure, wherein the stop structure cooperates with the first stop portion and the second stop portion to limit the rotation of the fixing structure relative to the main structure;

[0008] The main structure, the fixing structure and the stop structure are independent components.

[0009] As an optional technical solution, the first end of the main structure has a first outer surface, and the first fixing portion includes a coupling portion and a first protrusion portion arranged in sequence along a first direction, the first direction being along the longitudinal direction of the main structure and toward the first end, wherein the coupling portion has the first outer surface, and the first protrusion portion is formed by protruding from the first outer surface; the fixing structure has a second surface and a third surface relative to each other, the second fixing portion includes a through hole extending from the second surface of the fixing structure to the third surface, and the diameter of the through hole matches the outer diameter of the coupling portion, the fixing structure is sleeved on the first end of the main structure, and the direction of the second surface pointing to the third surface is consistent with the first direction.

[0010] As an optional technical solution, the first protrusion is located between the third surface of the fixing structure and the diverter plate.

[0011] As an optional technical solution, the first protrusion is located in the through hole, and the second fixing portion also includes a first groove portion, the first groove portion is formed by being concave from the inner wall forming the through hole, and the first groove portion is located on the side of the through hole adjacent to the third surface, the first protrusion is combined with the first groove portion, and the first protrusion is located between the combining portion and the diverter plate.

[0012] As an optional technical solution, the first protrusion is an annular structure having a first outer diameter, the coupling portion has a second outer diameter, and the first outer diameter is greater than the second outer diameter.

[0013] As an optional technical solution, the first stop portion is a first groove opened on the first end portion, and the first groove extends from the joint portion to the first protrusion and passes through the first protrusion, and the second stop portion is a second groove opened longitudinally on the inner wall starting from the third surface, and the first groove and the second groove form a accommodating area corresponding to each other, and the stop structure is inserted in the accommodating area.

[0014] As an optional technical solution, the second stop portion does not penetrate the second surface.

[0015] As an optional technical solution, the accommodating area is a cylindrical area, and correspondingly, the stop structure is a cylindrical structure.

[0016] As an optional technical solution, the third fixing portion is a fixing hole provided on the fixing structure, and the fixing hole is combined with a fixing column to fix the fixing structure on the diverter plate.

[0017] The present application also provides a hot runner system, which includes the main nozzle structure of the hot runner system as described above.

[0018] Compared with the existing technology, this application designs the main inlet structure into a split structure. By combining self-made parts with standard parts, it not only simplifies the structure of the mold, thereby reducing the difficulty of processing and thus reducing costs. In addition, the split main inlet structure is easy to install and is also convenient for maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a main nozzle structure of a hot runner system according to an embodiment of the present application;

[0020] Figure 2 This is an exploded schematic diagram of the main nozzle structure of the hot runner system according to one embodiment of the present application;

[0021] Figure 3 This is an exploded schematic diagram of the main nozzle structure of the hot runner system according to one embodiment of the present application from another angle;

[0022] Figure 4 This is a front view of the main nozzle structure of the hot runner system according to one embodiment of the present application;

[0023] Figure 5 For the Figure 4 Schematic diagram of the cross section along line AA. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] As used herein, terms such as "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" that indicate spatial relative positions are used for ease of explanation to describe the relationship of one element or feature relative to another element or feature as shown in the accompanying drawings. Spatially relative terms may be intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings.

[0026] For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0027] In the description of this application, 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 or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] Furthermore, it should be understood that although the terms first, second, etc. may be used herein to describe various elements or structures, these described objects should not be limited by these terms. These terms are merely used to distinguish these described objects from each other. For example, a first fixing portion may be referred to as a second fixing portion, and similarly, a second fixing portion may be referred to as a first fixing portion, without departing from the scope of protection of this application.

[0029] The present application provides a hot runner system, which includes the main nozzle structure described below. Since the hot runner system adopts all the technical solutions of all the following embodiments, it has at least all the beneficial effects brought by the technical solutions of the following embodiments, which will not be repeated here.

[0030] See Figure 1-5 , Figure 1 A schematic diagram of a main nozzle structure of a hot runner system according to an embodiment of the present application; Figure 2 This is an exploded schematic diagram of the main nozzle structure of the hot runner system according to one embodiment of the present application; Figure 3 This is an exploded schematic diagram of the main nozzle structure of the hot runner system according to one embodiment of the present application from another angle; Figure 4 This is a front view of the main nozzle structure of the hot runner system according to one embodiment of the present application; Figure 5 For the Figure 4Schematic cross-sectional view of line AA. The present application also provides a main nozzle structure of a hot runner system, wherein the main nozzle structure includes a main body structure 1, a fixed structure 2, and a stop structure 3, and the main nozzle structure is a split structure. Specifically, for example, the main body structure 1, the fixed structure 2, and the stop structure 3 are independent components of each other. The first end 11 of the main body structure 1 is provided with a first fixed portion 12 and a first stop portion 13. Of course, the main body structure 1 also includes a second end, which is opposite to the first end 11, and the feed port of the main nozzle structure is located at the second end.

[0031] In addition, the fixing structure 2 includes a second fixing portion 21, a third fixing portion 22, and a second stop portion 23. The second fixing portion 21 is combined with the first fixing portion 12 to fix the fixing structure 2 to the first end portion 11 of the main structure 1, and the third fixing portion 22 is used to fix the fixing structure 2 to the manifold of the hot runner system. In addition, the stop structure 3 cooperates with the first stop portion 13 and the second stop portion 23 to limit the rotation of the fixing structure 2 relative to the main structure 1. That is, when the fixing structure 2 is combined with the first end portion 11 of the main structure 1, the stop structure 3 cooperates with the first stop portion 13 and the second stop portion 23 to prevent the fixing structure 2 from rotating relative to the main structure 1, or the main structure 1 from rotating relative to the fixing structure 2.

[0032] Among them, the fixing structure 2 and the stop structure 3 are both standard parts. The setting of standard parts can reduce the overall processing difficulty of the main nozzle structure, reduce the complexity of the mold structure, and also reduce the overall cost of the main nozzle structure.

[0033] In one embodiment, the first end 11 of the main structure 1 has a first outer surface 14, and the first fixing portion 12 includes a coupling portion 15 and a first protrusion 16 arranged in sequence along a first direction D1. The first direction D1 is along the longitudinal direction of the main structure 1 and toward the first end 11. In other words, the first protrusion 16 is located outside the coupling portion 15 and is located at the endmost end of the main structure 1. The coupling portion 15 has the first outer surface 14, and the first protrusion 16 protrudes from the first outer surface 14. The fixing structure 2 has opposing second and third surfaces 27 and 28. The second fixing portion 21 includes a through hole 24 extending from the second surface 27 to the third surface 28 of the fixing structure 2. The fixing structure 2 is sleeved onto the first end 11 of the main structure 1, and the through hole 24 is coupled to the coupling portion 15. The direction from the second surface to the third surface is consistent with the first direction D1. The diameter of the through hole 24 matches the outer diameter of the coupling portion 15, so that the fixing structure 2 can be sleeved on the coupling portion 15 of the main structure 1. Specifically, for example, the diameter of the through hole 24 can be slightly larger than the outer diameter of the coupling portion 15 to ensure that the fixing structure 2 is sleeved on the main structure 1 and matched with the coupling portion 15.

[0034] In one embodiment, when the fixing structure 2 is combined with the main structure 1, the first protrusion 16 can be located between the third surface 28 of the fixing structure 2 and the diverter plate. In other words, the first protrusion 16 is located outside the fixing structure 2 and abuts against the third surface 28 of the fixing structure 2 (i.e., the surface of the fixing structure 2 away from the second end).

[0035] In this embodiment, when the fixing structure 2 is combined with the main structure 1, the first protrusion 16 is located in the through hole 24, and the second fixing portion 21 further includes a first groove portion 25. The first groove portion 25 is formed by being recessed from the inner wall 26 forming the through hole 24, and the first groove portion 25 is located on the side of the through hole 24 adjacent to the third surface 28 of the fixing structure 2. The first protrusion 16 is combined with the first groove portion 25, and the first protrusion 16 is located between the combining portion 15 and the diverter plate. In this embodiment, preferably, the first protrusion 16 matches the first groove portion 25, and when the fixing structure 2 is combined with the main structure 1, the first protrusion 16 does not protrude outside the fixing structure 2, thereby making the combination of the fixing structure 2 and the diverter plate smoother.

[0036] Preferably, the first protrusion 16 is an annular structure having a first outer diameter, and the coupling portion 15 has a second outer diameter, and the first outer diameter is greater than the second outer diameter.

[0037] Among them, the first stop portion 13 is a first groove opened on the first end portion 11, and the first groove extends from the connecting portion 15 to the first protrusion 16 and passes through the first protrusion 16, the second stop portion 23 is a second groove opened longitudinally on the inner wall 26 starting from the third surface 28, and the first groove and the second groove form a receiving area corresponding to each other, and the stop structure 3 is inserted into the receiving area.

[0038] The accommodating area is, for example, a cylindrical area, and correspondingly, the stop structure 3 is, for example, a cylindrical structure. The cooperation between the cylindrical area and the cylindrical structure is more conducive to the insertion or removal of the stop structure 3 from the accommodating area. Specifically, the stop structure 3 is, for example, a pin.

[0039] Moreover, in order to further limit the movement of the main structure 1 and the fixed structure 2 in the longitudinal direction (i.e., the first direction), preferably, the second stop portion 23 does not penetrate the second surface 27, that is, when the main structure 1 is combined with the fixed structure 2, the stop structure 3 is inserted into the accommodating area formed by the first groove and the second groove, which not only avoids the relative rotation between the main structure 1 and the fixed structure 2, but also, since the second stop portion 23 does not penetrate the second surface 27, the unpenetrated area of ​​the fixed structure 2 will block the stop structure 3 from moving upward, and when the fixed structure 2 is fixed on the diverter plate, the diverter plate will also limit the downward movement of the stop structure 3, thereby being able to limit the movement of the main structure 1 relative to the fixed structure 2 in the longitudinal direction.

[0040] In addition, the third fixing portion 22 is, for example, a fixing hole provided on the fixing structure 2, and the fixing hole 22 is combined with the fixing column 4 to fix the fixing structure 2 to the manifold. The fixing column is, for example, a stud.

[0041] In summary, the present invention designs the main inlet structure into a split structure. By combining self-made parts with standard parts, it not only simplifies the structure of the mold, thereby reducing the difficulty of processing and thus reducing costs. In addition, the split main inlet structure is easy to install and is easy to repair and replace.

[0042] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0043] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of this application. They are not intended to limit the scope of protection of this application. Any equivalent implementation methods or changes that do not deviate from the technical spirit of this application should be included in the scope of protection of this application.

Claims

1. A main nozzle structure of a hot runner system, characterized in that: The main inlet structure is a split structure, and the main inlet structure includes: A main body structure, wherein a first fixing portion and a first stopping portion are provided at a first end portion of the main body structure; a fixing structure comprising a second fixing portion, a third fixing portion, and a second stopper, wherein the second fixing portion is combined with the first fixing portion to fix the fixing structure to the first end portion of the main structure, and the third fixing portion is used to fix the fixing structure to the diverter plate; and a stop structure, wherein the stop structure cooperates with the first stop portion and the second stop portion to limit the rotation of the fixing structure relative to the main structure; The main structure, the fixing structure and the stop structure are independent components.

2. The main nozzle structure of the hot runner system according to claim 1, characterized in that: The first end of the main structure has a first outer surface, and the first fixing portion includes a coupling portion and a first protrusion arranged in sequence along a first direction, the first direction being along the longitudinal direction of the main structure and toward the first end, wherein the coupling portion has the first outer surface, and the first protrusion is formed by protruding from the first outer surface; the fixing structure has a second surface and a third surface relative to each other, the second fixing portion includes a through hole extending from the second surface of the fixing structure to the third surface, and the diameter of the through hole matches the outer diameter of the coupling portion, the fixing structure is sleeved on the first end of the main structure, and the direction of the second surface pointing to the third surface is consistent with the first direction.

3. The main nozzle structure of the hot runner system according to claim 2, characterized in that: The first protrusion is located between the third surface of the fixing structure and the diverter plate.

4. The main nozzle structure of the hot runner system according to claim 2, characterized in that: The first protrusion is located in the through hole, and the second fixing portion also includes a first groove portion, the first groove portion is formed by being concave from the inner wall forming the through hole, and the first groove portion is located on the side of the through hole adjacent to the third surface, the first protrusion is combined with the first groove portion, and the first protrusion is located between the combining portion and the diverter plate.

5. The main nozzle structure of the hot runner system according to claim 2, characterized in that: The first protrusion is an annular structure having a first outer diameter, the coupling portion has a second outer diameter, and the first outer diameter is greater than the second outer diameter.

6. The main nozzle structure of the hot runner system according to claim 4, characterized in that: The first stop portion is a first groove opened on the first end portion, and the first groove extends from the joint portion to the first protrusion and passes through the first protrusion. The second stop portion is a second groove opened longitudinally on the inner wall starting from the third surface, and the first groove and the second groove form a accommodating area corresponding to each other, and the stop structure is inserted in the accommodating area.

7. The main nozzle structure of the hot runner system according to claim 6, characterized in that: The second stopping portion does not penetrate the second surface.

8. The main nozzle structure of the hot runner system according to claim 6, characterized in that: The accommodating area is a cylindrical area, and correspondingly, the stop structure is a cylindrical structure.

9. The main nozzle structure of the hot runner system according to claim 1, characterized in that: The third fixing portion is a fixing hole provided on the fixing structure, and the fixing hole is combined with a fixing column to fix the fixing structure on the diverter plate.

10. A hot runner system, characterized in that: The hot runner system includes the main nozzle structure of the hot runner system according to any one of claims 1 to 9.

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