A multi-channel injection runner with a thin-walled frame

Abstract

This utility model relates to the field of thin-walled frame technology, and in particular to a multi-channel injection molding runner for thin-walled frames. It includes a body, an inner cavity with a material chamber, a material guiding assembly between the body and the material chamber, and an injection port communicating with the material chamber on one side of the top of the body. A protective assembly is provided on the top of the injection port. The material guiding assembly includes a guiding disc and an outlet. The guiding disc is disposed within the material chamber and is adapted to the inner wall of the material chamber. Multiple guiding ports are provided on the guiding disc, arranged in a regular array. Multiple outlets are located at the bottom of the body and are also arranged in a regular array. One-way valves are installed in both the guiding ports and the outlets. This utility model can avoid inconsistent pressure loss along the melt flow path by using air pressure, thus reducing the likelihood of uneven material discharge and allowing for more uniform multi-channel melt output, thereby improving the molding quality and production stability of the thin-walled frame.

Description

Technical Field

[0001] This utility model relates to the field of thin-walled frame technology, specifically a multi-channel injection molding runner for thin-walled frames. Background Technology

[0002] Thin-walled frames refer to edge frame structures with relatively thin walls that are set around the main body of various equipment or structures. Their core feature is that the thickness of the frame is much smaller than the size of the main structure. While meeting the basic support, protection or connection functions, they can significantly reduce the amount of material used, reduce the overall weight, and optimize the simplicity of the appearance and space utilization. Such frames usually need to combine material properties and precision processing technology to balance the contradiction between thin walls and structural performance. They are an important technical solution in modern industrial design that takes into account both functionality and economy.

[0003] Thin-walled frames require multi-channel injection runners during injection molding. The multi-channel injection runner for thin-walled frames is a multi-entry melt delivery system designed for the injection molding needs of thin-walled frames. It is a key technical solution to balance the molding quality and production stability of thin-walled structures.

[0004] In multi-channel systems, the different lengths, cross-sections, or curvatures of each channel lead to inconsistent melt pressure loss along the flow path, and delayed filling in far-end or narrow channels, which can easily cause uneven discharge. Therefore, a thin-walled frame multi-channel injection molding runner is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a multi-channel injection molding runner for thin-walled frames to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-channel injection molding runner with a thin-walled frame includes a body, an inner cavity of which has a material chamber, a material guiding assembly between the body and the material chamber, an injection port communicating with the material chamber on one side of the top of the body, a protective assembly on the top of the injection port, the material guiding assembly including a material guiding disc and an outlet, the material guiding disc being disposed in the material chamber and adapted to the inner wall of the material chamber, the material guiding disc having multiple material guiding ports arranged in a regular array, multiple outlets being provided, the outlets being located at the bottom of the body and arranged in a regular array, and a one-way valve being installed in both the material guiding port and the outlet.

[0008] As a further optimization of this utility model, the top side of the main body is provided with an exhaust hole communicating with the material chamber, and the top of the exhaust hole is movably engaged with an exhaust plug for protecting the exhaust hole.

[0009] As a further optimization of this utility model, an electric push rod is provided above the main body. The electric push rod is fixedly installed at the top center of the main body, and the output end of the electric push rod passes through the top wall of the main body and extends into the material chamber.

[0010] As a further optimization of this utility model, the output end of the electric push rod is fixedly connected to the top center of the guide disc, and a first sealing ring is interference-fitted to the top of the main body through which the electric push rod passes, and the inner surface of the first sealing ring is tightly fitted to the outer surface of the output end of the electric push rod.

[0011] As a further optimization of this utility model, a second sealing ring is interference-fitted at the outer center of the guide disc, and the outer surface of the second sealing ring is tightly fitted to the inner wall of the material chamber.

[0012] As a further optimization of this utility model, the protective component includes a protective cover that is hinged to the top of the injection port via a hinge shaft. The protective cover is matched with the specifications of the injection port, and a protective plug that is adapted to the inner surface of the injection port is fixedly connected to the inner side of the protective cover. An annular airbag is fixedly bonded to the outer side of the protective plug.

[0013] As a further optimization of this utility model, a small air pump is fixedly connected to the center of the outer side of the protective cover. The output end of the small air pump is connected to an air guide tube. The end of the air guide tube away from the small air pump passes through the protective cover and is connected to the annular airbag.

[0014] As a further optimization of this utility model, the following features are provided: a plurality of first magnetic absorbing plates are installed on the inner edge of the protective cover, and a plurality of second magnetic absorbing plates are installed on the top edge of the injection port. The first magnetic absorbing plates and the second magnetic absorbing plates are arranged with opposite magnetic poles in equal numbers, corresponding positions, and matching specifications.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this invention, the material guiding component can avoid inconsistent pressure loss of the melt along the process due to differences in the length, cross-section, or curvature of each channel, thus making it less likely to cause uneven discharge. The multi-channel discharge of the melt can be made more uniform through air pressure, thereby improving the molding quality and production stability of the thin-walled frame. The protective component can seal the injection port when not in use to prevent external dust and moisture from entering the material chamber, thereby avoiding the impact of dust and moisture entering the material chamber on the quality of the melt and ensuring the molding quality of the thin-walled frame. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0021] Figure 5 This is a schematic diagram of the structure of the material guiding disc of this utility model;

[0022] Figure 6 This is a cross-sectional view of the main body of this utility model;

[0023] Figure 7 This is a schematic diagram of the closing structure of the protective component of this utility model;

[0024] Figure 8 This is a schematic diagram of the unfolded structure of the protective component of this utility model.

[0025] In the diagram: 1. Main body; 2. Material chamber; 3. Material guiding assembly; 31. Material guiding disc; 32. Discharge port; 33. Material guiding port; 34. One-way valve; 35. Electric push rod; 36. First sealing ring; 37. Second sealing ring; 4. Injection port; 5. Protective assembly; 51. Protective cover; 52. Protective plug; 53. Annular airbag; 54. Small air pump; 55. Air guide pipe; 56. First magnetic suction plate; 57. Second magnetic suction plate; 6. Exhaust hole; 7. Exhaust plug. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Please see Figures 1-8 This utility model provides a technical solution:

[0029] A multi-channel injection molding runner with a thin-walled frame includes a body 1, a material chamber 2 inside the body 1, a material guiding component 3 between the body 1 and the material chamber 2, an injection port 4 communicating with the material chamber 2 on one side of the top of the body 1, a protective component 5 on the top of the injection port 4, the material guiding component 3 including a material guiding disc 31 and an outlet 32, the material guiding disc 31 being disposed in the material chamber 2 and adapted to the inner wall of the material chamber 2, the material guiding disc 31 having multiple material guiding ports 33 arranged in a regular array, multiple outlets 32 being located at the bottom of the body 1 and arranged in a regular array, and a one-way valve 34 being installed in both the material guiding port 33 and the outlet 32.

[0030] As a further implementation of this solution, an exhaust hole 6 communicating with the material chamber 2 is provided on one side of the top of the main body 1. An exhaust plug 7 for protecting the exhaust hole 6 is movably engaged at the top of the exhaust hole 6. The exhaust hole 6 provided above can exhaust the top of the material chamber 2. The exhaust plug 7 can be inserted into the exhaust hole 6 when not in use to seal the exhaust hole 6 and prevent external dust and moisture from entering the material chamber 2.

[0031] As a further implementation of this solution, an electric push rod 35 is provided on the top of the main body 1. The electric push rod 35 is fixedly installed at the top center of the main body 1. The output end of the electric push rod 35 penetrates through the top wall of the main body 1 and extends into the material chamber 2. The output end of the electric push rod 35 is fixedly connected to the top center of the guide disc 31. A first sealing ring 36 is interference-fitted at the point through which the electric push rod 35 penetrates the top of the main body 1. The inner surface of the first sealing ring 36 is tightly fitted with the outer surface of the output end of the electric push rod 35. The electric push rod 35 in the above configuration serves as a power source, which can drive the guide disc 31 to move up and down in the material chamber 2 to guide the material. The first sealing ring 36 can ensure the sealing effect with the main body 1 when the electric push rod 35 moves in and out.

[0032] As a further implementation of this solution, a second sealing ring 37 is interference-fitted at the outer center of the guide disc 31, and the outer surface of the second sealing ring 37 is tightly fitted to the inner wall of the material chamber 2. The second sealing ring 37 in the above-mentioned configuration can ensure the sealing between the guide disc 31 and the inner wall of the material chamber 2, so as to ensure the guiding effect.

[0033] As a further implementation of this solution, the protective component 5 includes a protective cover 51 hinged to the top of the injection port 4 via a hinge shaft. The protective cover 51 matches the specifications of the injection port 4, and a protective plug 52 adapted to the inner surface of the injection port 4 is fixedly connected to the inner side of the protective cover 51. An annular airbag 53 is fixedly bonded to the outer side of the protective plug 52. A small air pump 54 is fixedly connected to the center of the outer side of the protective cover 51. The output end of the small air pump 54 is connected to an air guide tube 55, and the end of the air guide tube 55 away from the small air pump 54 passes through the protective cover 51. 1. It is connected to the annular airbag 53. Multiple first magnetic absorbing pieces 56 are embedded in the inner edge of the protective cover 51, and multiple second magnetic absorbing pieces 57 are embedded in the top edge of the injection port 4. The first magnetic absorbing pieces 56 and the second magnetic absorbing pieces 57 are set with opposite magnetic poles that are equal in number, corresponding in position and matching in specifications. The above settings can seal and protect the injection port 4 when not in use, preventing external dust and water vapor from entering the material chamber 2, thereby avoiding the impact of dust and water vapor entering the material chamber 2 on the quality of the melt, so as to ensure the molding quality of the thin-walled frame.

[0034] Workflow: The initial state of the guide disc 31 is located at the bottom of the material chamber 2. In use, first connect the guide port 33 to the external melt source. The melt will enter the material chamber 2 through the guide port 33, gradually filling the chamber. After a specific time, the melt will fill the space between the top of the guide disc 31 and the material chamber 2. At this point, the melt supply is stopped. Then, the electric push rod 35 in the guide assembly 3 is activated, causing it to move the guide disc 31 upwards within the material chamber 2. Simultaneously, due to the second sealing ring... The presence of 37 creates a negative pressure in the space between the material chamber 2 and the bottom of the guide disc 31. Due to the negative pressure, the melt enters the space between the material chamber 2 and the bottom of the guide disc 31 through the guide port 33 on the guide disc 31 and the one-way valve 34 inside it. When the electric push rod 35 drives the guide disc 31 to move downward in the material chamber 2, the guide disc 31 will squeeze the melt, so that the melt is discharged through multiple channels through multiple outlets 32 and the one-way valve 34 inside it, and the pressure is evenly distributed.

[0035] The protective component 5 can seal the injection port 4 when not in use to prevent external dust and moisture from entering the material chamber 2, thereby avoiding the impact of dust and moisture entering the material chamber 2 on the quality of the melt and ensuring the molding quality of the thin-walled frame. During protection, the protective cover 51 is rotated to the top of the injection port 4 via the hinge shaft. At the same time, the protective plug 52, together with its outer annular air bladder 53, is inserted into the injection port 4. The first magnetic suction piece 56 contacts the second magnetic suction piece 57 and magnetically attracts and fixes them to each other. Then, the small air pump 54 is started to inflate the annular air bladder 53 through the air guide pipe 55. After the annular air bladder 53 is inflated, it expands and fills the gap between the annular air bladder 53 and the inner wall of the injection port 4 to achieve a good sealing effect.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-channel injection molding runner for a thin-walled frame, comprising a body (1), characterized in that: The inner cavity of the body (1) is provided with a material chamber (2), and a material guiding component (3) is provided between the body (1) and the material chamber (2). A material injection port (4) communicating with the material chamber (2) is provided on one side of the top of the body (1), and a protective component (5) is provided on the top of the material injection port (4). The material guiding assembly (3) includes a material guiding disc (31) and a discharge port (32). The material guiding disc (31) is located in the material chamber (2) and is adapted to the inner wall of the material chamber (2). The material guiding disc (31) has multiple material guiding ports (33) and the multiple material guiding ports (33) are arranged in a regular array. There are multiple discharge ports (32). The discharge ports (32) are located at the bottom of the body (1) and the multiple discharge ports (32) are arranged in a regular array. A one-way valve (34) is installed in both the material guiding port (33) and the discharge port (32).

2. The multi-channel injection molding runner for a thin-walled frame according to claim 1, characterized in that: The top side of the main body (1) is provided with an exhaust hole (6) that communicates with the material chamber (2), and an exhaust plug (7) for protecting the exhaust hole (6) is movably engaged at the top of the exhaust hole (6).

3. The multi-channel injection molding runner for a thin-walled frame according to claim 1, characterized in that: An electric push rod (35) is provided above the main body (1). The electric push rod (35) is fixedly installed at the top center of the main body (1). The output end of the electric push rod (35) passes through the top wall of the main body (1) and extends into the material chamber (2).

4. The multi-channel injection molding runner for a thin-walled frame according to claim 3, characterized in that: The output end of the electric push rod (35) is fixedly connected to the top center of the guide disc (31). The top of the body (1) is connected to the first sealing ring (36) through the electric push rod (35) with an interference fit. The inner surface of the first sealing ring (36) is in close contact with the outer surface of the output end of the electric push rod (35).

5. The multi-channel injection molding runner for a thin-walled frame according to claim 1, characterized in that: The outer center of the guide disc (31) is fitted with a second sealing ring (37), and the outer surface of the second sealing ring (37) is in close contact with the inner wall of the material chamber (2).

6. The multi-channel injection molding runner for a thin-walled frame according to claim 1, characterized in that: The protective component (5) includes a protective cover (51) that is hinged to the top of the injection port (4) via a hinge shaft. The protective cover (51) is matched with the specifications of the injection port (4), and a protective plug (52) that is adapted to the inner surface of the injection port (4) is fixedly connected to the inner side of the protective cover (51). An annular airbag (53) is fixedly bonded to the outer side of the protective plug (52).

7. The multi-channel injection molding runner for a thin-walled frame according to claim 6, characterized in that: A small air pump (54) is fixedly connected to the center of the outer side of the protective cover (51). The output end of the small air pump (54) is connected to an air guide pipe (55). The end of the air guide pipe (55) away from the small air pump (54) passes through the protective cover (51) and is connected to the annular airbag (53).

8. The multi-channel injection molding runner for a thin-walled frame according to claim 6, characterized in that: Multiple first magnetic absorbing pieces (56) are embedded at the inner edge of the protective cover (51), and multiple second magnetic absorbing pieces (57) are embedded at the top edge of the injection port (4). The first magnetic absorbing pieces (56) and the second magnetic absorbing pieces (57) are set with opposite magnetic poles that are equal in number, corresponding in position and matching in specifications.

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