U-shaped flow channel structure capable of reducing snakelike lines

Abstract

The utility model provides a U-shaped runner structure capable of effectively reducing serpentine stripes, which comprises a mould body 1, a mould core arranged on the mould body and a runner structure used for conveying injected glue, the runner structure consists of an injection runner and a plurality of U-shaped runners connected on one side or two sides of the injection runner, each U-shaped runner comprises two branch runners, and the branch runners are arranged on the mould core. According to the utility model, the plurality of groups of mold cavities communicated with the branch runners are arranged on the mold core at intervals, so that plastic reaches the plurality of branch runners forming the U-shaped runner from the injection runner along the branch runners and then is respectively injected into the plurality of groups of mold cavities, each group of mold cavities can be used for forming a product, and the connecting distances from the U-shaped runner to each group of mold cavities are equal; the design of the U-shaped structure is beneficial to reducing the flow velocity impact of plastic in a molten state, so that the plastic flows into each group of mold cavities uniformly and smoothly, the thickness of injection-molded products is ensured to be consistent, the phenomena of snakelike lines, bright marks and the like are avoided, the injection molding quality of the products is improved, and the injection mold has a market prospect and is suitable for popularization and application.

Description

Technical Field

[0001] The present application relates to the field of injection molds, and in particular to a U-shaped flow channel structure capable of reducing serpentine patterns. Background Art

[0002] Injection molds are commonly used molds for molding plastic parts. Through injection molds, various forms of plastic parts can be molded to meet people's various needs. Plastic injection molding is an excellent processing method that can achieve low-cost, mass production of plastic products. It is also an indispensable processing technology for the development of high-tech products. In existing injection molds, the structure of the sol injection part is mostly designed as a straight channel. However, when producing some special products, due to the high pressure of the straight channel injection, serpentine patterns appear after the product is molded, which greatly affects the product yield. Utility Model Content

[0003] The purpose of the present application is to solve the shortcomings of the above-mentioned mold structure and provide a U-shaped runner structure that effectively reduces serpentine marks, including a mold body, a mold core arranged on the mold body and a runner structure for conveying injection glue, the runner structure includes an injection runner that is vertically arranged in a cylindrical shape and connected to a nozzle, a branch runner connected to one side or both sides with the injection runner as the center, and a branch runner connected to the branch runner. The branch runner connected to the branch runner forms a U shape, and a glue outlet pipe connected to the model cavity is provided at the end of the branch runner.

[0004] Furthermore, the mold core surface is provided with a mold cavity and a flow channel structure groove to be formed;

[0005] Furthermore, the U-shaped flow channel is composed of two branch flow channels;

[0006] Furthermore, a plurality of groups of mold cavities connected to the branch channels are arranged at intervals on the mold core, and each group of mold cavities can mold a product;

[0007] Furthermore, the connection distance from the U-shaped runner to each group of mold cavities is equal, which is conducive to slowing down the impact of the plastic flow velocity in the molten state;

[0008] Furthermore, the glue outlet pipe is connected to the middle of a group of the model cavities, and the connection distance of each group is equal, so that the injection molding is more uniform and stable.

[0009] The U-shaped mold has two U-shaped runners, one for each injection mold and the other for each U-shaped runner. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the main schematic diagram of the application;

[0011] Figure 2 This is a schematic diagram of the flow channel structure of this application;

[0012] Description of the numbers in the figure:

[0013] Mold body 1, mold core 2, runner structure 3, injection runner 31, branch runner 32, branch runner 33, rubber outlet pipe 34, model cavity 4, product 5. DETAILED DESCRIPTION

[0014] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present application.

[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] Example 1

[0017] The utility model provides a U-shaped flow channel structure for reducing serpentine patterns, such as Figure 1-2 As shown, it includes a mold body 1, a mold core 2 arranged on the mold body 1 and a flow channel structure 3 for conveying injection glue, and the surface of the mold core 2 is provided with a model cavity 4 and a groove of the flow channel structure 3.

[0018] The flow channel structure 3 includes an injection flow channel 31 vertically arranged in a cylindrical shape, a branch flow channel 32 connected to one side or both sides with the injection flow channel 31 as the center, and a branch flow channel 33 connected to the branch flow channel 32; the injection port of the injection flow channel 31 is connected to the nozzle above, and the branch flow channel 33 connected to the branch flow channel 32 forms a U shape, and a glue outlet hose 34 connected to the model cavity 4 is provided at the end of the branch flow channel 33.

[0019] The above-mentioned runner structure 3 is the core technical solution of this embodiment. The runner structure 3 is composed of an injection runner 31 and a plurality of U-shaped runners connected to one side or both sides of the injection runner 31. Each U-shaped runner is composed of two branch runners 33. Through a plurality of groups of model cavities 4 connected to the branch runners 33 arranged at intervals on the mold core 2, the plastic is allowed to flow from the injection runner 31 along the branch runner 32 to the plurality of branch runners 33 constituting the U-shaped runner and then injected into the plurality of groups of model cavities 4 respectively. Each group of model cavities 4 can form a product 5. The advantage of such a design is that the connection distance from the U-shaped runner to each group of model cavities 4 is equal, and the U-shaped structure design is conducive to slowing down the impact of the plastic flow velocity in the molten state, so that the plastic flows into each group of model cavities 4 more evenly and smoothly, ensuring that the injection molded product 5 is of uniform thickness, avoiding the occurrence of serpentine patterns, bright prints and the like, thereby improving the injection molding quality of the product 5.

[0020] As a preferred embodiment, the end of the branch channel 33 is provided with a glue outlet pipe 34 of a group of model cavities 4 connected thereto laterally, and the glue outlet pipe 34 is connected to the middle position of a group of model cavities 4. With this structural arrangement, each branch channel 33 is connected to a group of model cavities 4 located on one side thereof at an equal distance through the glue outlet pipe 34, so that the plastic flows into the middle position of the model cavity 4 through the glue outlet pipe 34, and then flows to the two ends of the model cavity 4, so that the injection molding process is more uniform and stable, thereby ensuring the stable quality of the injection molded products.

[0021] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A U-shaped flow channel structure for reducing serpentine marks, comprising a mold body (1), a mold core (2) arranged on the mold body (1), and a flow channel structure (3) for conveying injection glue, characterized in that: The flow channel structure (3) comprises an injection flow channel (31) which is vertically arranged in a cylindrical shape and connected to a nozzle, a branch flow channel (32) connected to one side or both sides with the injection flow channel (31) as the center, and a branch flow channel (33) connected to the branch flow channel (32), wherein the branch flow channel (33) connected to the branch flow channel (32) forms a U shape, and a rubber outlet pipe (34) connected to the mold cavity (4) is arranged at the end of the branch flow channel (33).

2. The U-shaped flow channel structure for reducing serpentine pattern according to claim 1, characterized in that: The surface of the mold core (2) is provided with a mold cavity (4) to be molded and a groove of a flow channel structure (3).

3. The U-shaped flow channel structure for reducing serpentine pattern according to claim 1, characterized in that: The U-shaped flow channel is composed of two branch flow channels (33).

4. The U-shaped flow channel structure for reducing serpentine pattern according to claim 2, characterized in that: A plurality of groups of model cavities (4) communicating with the branch channel (33) are arranged at intervals on the mold core (2), and each group of model cavities (4) can mold a product (5).

5. The U-shaped flow channel structure for reducing serpentine pattern according to claim 4, characterized in that: The connection distances between the U-shaped flow channel and each group of mold cavities (4) are equal, which is helpful to mitigate the impact of the flow velocity of the plastic in a molten state.

6. The U-shaped flow channel structure for reducing serpentine pattern according to claim 4, characterized in that: The glue outlet pipe (34) is connected to the middle of a group of the mold cavities (4), and the connection distance of each group is equal, so that the injection molding is more uniform and stable.

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